LIBRARY ^nssachos^^ 1895 O o 0) 0) O 1 H bo OS o H H O ^ •^ ^ (V Jo b b£) « 1— I 1^ 8 <o 3 o o o X < Four Leas. P-, KH ri H^ H^ ci HH - ri ^ C050COCOCO o^o^c^c^o^c^o o o o o o ^ 1— 1 1— 1 K^ ^ l-H ~ 1— 1 1 Three Leas. M hH K- M u, _ HH ri 1 Counts. O O O CO CD I— 1 00 in» "«*< ■^ "^ CO 05 C<J I>- <M 00 in 7tfp<pC^<»ipT^00ipC^O5tOcOr-l00tOC''5rH|;- oo6s656o6oc3ot?'t?-t-cbQDcocbioio»biolii (MC<lT-lrHi-li-HT-lrHi-lr-li-HrHi-lT-lr-§t-Hi-li-l' One Lea. HH»-il-ll-IMHHWl_,HHlt Q n ri M ri ci n ci ci ri n n ci n M n ci N r) t Four Leas. in n "^vo CO o M -^vo 00 o M O n -+vO co O m ;: _l-HP-(h-ll-<ClCl ^^.N Q •^'^■^•^'^'^'^■vh'^rh'^i-oi-nLnuni-riuiuiii in G O U r-ilii Hbi Hill hI'M H|n Hin ihI'm H|'^■^ h^oi HI CO "^vO r^ On O CI CO LTivO CO O^ M M '-I '■'^i HHI-ll-IMMWl-lC^r) Q rO CO fO rO fO rO fO co co co co co ro <"0 co -^ rj- "^ ■ ^ i-lOrHCOCOCOCOi-H000005COOOiOrt<LC5tDO- c5opc<i^tr-poocr^P'*oO(^:)t-<Nt^c<ii>-eo|it Oo656ot-t-ii)inih4t4eococ<ic<ji^t^oo:j' ■^T^ieocoeocococoeoeococoeoeococococo n < a z O o Hlol HlfM H'H H|»? hIoT H<>1 r-!|!M r-^|n riln O i-H hH M M CO CO '^ "^ LTi u-i^ vO r-^ r^OO CO o^o 4-3 Four Leas. H-i M CO ■^ invO t^OO ON O *-> M co "^ i-nvD t~^CO HHi-ii-ii-ii-(i-.i-ii-(i-(r p M n ri M M M ci M n ri n ci m ri n n m m f in o fCN'H|«'H|^ ffOhi(H!>'^M fOhi<H|s>-lhj( rOptlHl^l^M «|-*H|r M CO 'Nt- iJ-i LO^O t^CO 00 ON O H-i 1-1 M coo O i-iitf K-Mi-Hi-iMi-ii-iF-iMi-HMMMrin j Q Counts. C0OC0C<Jt*tr^0qC<Jt-C005C0C— I-H050CO O^M ppTHpTt<pt>.7HrHpt>-pip«pT*<ipip5iooo T^o6ocb»b"^c<iT^o6ot>-cbib'^coc<iAH om OOOOC^t-t^b-t-t^t'-COcOCOCOCOCDCOCOCOlO < ^; O in o Q rHl^H^IWhH rHh*H|cl?Oh* h|,J(H'M<«F* ^Ir^HllM^lh* -hH^hIc M M C^ cocOCOCO"^'^'^'vr"^'-^>-^"^vOvONOK ) M vO O OOOvO OOOO OOOvO OoomD OvOCO OOCO OOOO CI -H 1-1 1-1 M HI .-, HH O O CO O , « « 7 i-< CI M n CO f o f o rt 'I- -t- LTV Lo LOO vo r^oo oo c^ O O >-< Cl CI CO -t Cl Cl C) Cl 1 LOCO H^ O O CI CO O CI CO O O M oo f) O M O CI O CI ci c^' JCOOOOO ChOCT^O^O O O O — — -< 1-1 C) C) cofO^n-Lo LOMD vO !>. r-^co 3 05 00 00 00 i-l lO CM 0050<MCO.-tCOCOT-HOr-liO(M<MeOCOi-HI:-u:)'«^"<*l -•^9qpqo4r5T7S(»»pi7HgscooT^oo<P7t<po(>^050o^ H'^"^'W<eoo:)coc<ic<jcqi^i^i^»^ooooa5<b6oc»do6ot^ Hi— li-Hr-HrHr-Ht— 1-1— li-Hi-Hi— It-Hi— t!-Hi-Hi— IrHi— I ) HH n ro o c) ^vO CO O <"i ^^ CO O Cl O -^oo ci 'O O O -^co ci \0 O O I Cl Cl Cl „ >-( -^ w- 1-, ri Cl w t-i Cl -< HI Cl 1 Cl Cl Cl CO CO to CO CO CO CO CO CO CO CO CO -^ ^ -^ -^ '^ -d- LO LO LO LO LO LOO 3 OO H 1-1 Cl O LO LO Cl Cl Cl -^vO 00 O Cl •^vO CO O Cl M Cl O Cl -T|-o CO O Cl -^vO CO O Cl Cl Cl o u'wO vO vO vO ^O vO vO O vO O ^ 'O t^r^r~^r^i^^t^i>.r^t-v,i>.t>. t^co 5 t>. O Hfll H|!M Cl ro LovO 00 1— 1 i-< 1— ( 1— ( 1— 1 -I'M 0\ 1- 1-1 Cl Cl O »-i Cl rHlci rH|l1 Hl-M CO -^vo r^ Ch o Cl CO LovO CO HH 1— 1 1— 1 HH 1-4 C^ Hl^l M O ^•■^•^■^•^••^•^■^•^'^-^•^LO"^ LO LO LO LO LO LO LO LO lO LO LO LO LO LO VO HOOC^COt-OiCNcOi— lt*TtirHOC5aiO^O<MiOOO(Mt^C<lt-eOOt^iOCO t^05lpt^I^-copcp(^^g5p<^:»pplppoo4^<^^05t*■^<^5lgst^ D6ooo6ot*ir*t'«bcbibihibiO"^-^rt<cooococ<i<>^c^ r^:i l-<'?1 Hiil hIcI l-'hl ^l-Il r-hl H|-:l Htl H|1-1 Hfcl rt|l1 H'OI Hisi 3 O >-< 1-1 Cl Cl CO CO Tt- -^ LO Lo\0 sO r^ t^CO CO ON a^ O O i-i 1-1 Cl Cl CO ro O HI-II-IK-II-HI-I^I-II-II-HMI-II-HMI-II-II-IKHHHI-ICICICICICICICICI Hl-IHHl-.H^-HHHl-i«HHI-(MhHi-^l-l«l-.l-IMI-lh-lHH^. HHHHhHHHHHM 5 1-1 Cl CO O '-I M fO -tf LoO t^CO On O 1-1 Cl CO "^ lovO r^OO On O ^ Cl co O ■1 Cl Cl Cl HH 1-1 -H l-i HH 1- HH HH ■-( l-( M Cl Cl Cl ■1 Cl Cl Cl CO ro CO ro ro ro ro ro ro ro ro ro ro rO ro ro ro ro ro ro ro ro ro ro Tf c^h+HlciHlrji fOH<H|?l-!k}( colrHr-lii-Hl-^ Mf-ifHlci-il^ co|Ti'H.':i-il^( roKHHl-j-MlTj* mh<h|-:>hK)< ro -^ LovO vO t^CO On ON O i-" Cl Cl CO ^ lo lovO r^COOO OnQ i-i >-* Cl COO MMI-IMl-l-HMHHMMl-lhHwnClClNCI 1 M Cl Cl M M Cl Cl M Cl M Cl Cl Cl Cl Cl Cl Cl Cl Cl Cl Cl Cl Cl Cl Cl Cl Cl CO <ib-Tt<eoioo5iocococooocooooooa5i— iiOrHt^iO'^'^iot^'-iLOOco opi7Ha:)ipt^poopg5(Ncpp(>:)t^rHppipp-^p-T}<gi"THpipr-ip ot^t^<iDio4*<4iicoc<jT^^oo656o6ot^c^cbibibTj<rj4M rtN^H|':1^:l-(^ ^Mr-'cix^H H-^H-i^l-H -il^r-I^i^hH ^I-^ii-I-imI-H ^!^<rH|ciro|-H ^|^h|':imH< ^ r^ !>. t^CO CO CO CO C^ O^ O^ On O O O O 1-1 1-1 i-i i-i Cl Cl Cl Cl ro r^ CO ro O ,_, NH 1-1 1-4 .-1 1-1 1-1 1-1 M -I ~ 1-4 Cl Cl Cl M M Cl Cl Cl Cl Cl Cl Cl Cl Cl Cl Cl ■>• .■^J.d^^,- *V: -.A.* •^^.•. . T'.r-' \ J .•^■^,^^ ■'._,;/;. ^.s^.^^;^ -;--■■ '^ij^;.:' -;-r-v,- Vv.._:^ ,':..-'; n : -■ :- % x:- ss^sT. y^\ :fi'. '^••\^^ff:,.^:, .•'')f V ' THIRD EDITION. Cloth, crown 8vo, 6s. COTTON MANUFACTURING, By the Same Author. EIGHTY ILLUSTRATIONS. A complete Treatise on the Machinery, Processes, and Products of Cotton Weaving-. Weaving Calculations. A GUIDE TO CALCULATIONS RELATING TO COTTON YARN AND CLOTH AND ALL PROCESSES OF COTTON WEAVING. BY C. p. BROOKS, AUTHOR OF "COTTON MANUFACTURING;" Examiner to the City atid Guilds of London Instittite ; Sen. Honours Medallist, Cotton Manufacturing, 1887 ; Late Lecttirer on Cotton Spin?iing, Weaving, and Designings at the Blackburn Tecluiical Institutions. ILLUSTRATED. LONDON: E. & F. N. SPON, 125 STRAND. AND NEW YORK: 12 CORTLANDT STREET. MANCHESTER: C. P. BROOKS, HARPURHEY. JOHN HEYWOOD, DEANSGATE AND RIDGEFIELD. 1893. {^Copyright — A II rights reserved. ] PREFACE TO FIRST EDITION. ANY books have in times past been published by authors whose object has been to explain the calculations of the weaving industries. This was more frequently the case in the earlier days of the trade than it has been in recent times, the first forty or fifty years of this century being prolific in this respect, some indeed being published even in the last century. The author has in his possession one dating so far back as 1779- The cause of so many works being published early in this century is explained by the fact that seventy to eighty years ago the introduction of power machinery was taking place rapidly, and the trade was consequently in a transition stage. Doubtless there would be much inquiry, and information would be in great demand on the subject of calculations connected with the trade and necessary for use. Thus books de- scriptive of the machinery, coupling with this the calcula- tions, supplied the demand. However, few, if any books exclusively on cotton weaving calculations have been published for twenty or thirty years, and the author, believing that such a one is wanted, publishes the present work to replace those which in their time have done good service to the manu- facturing interests of their day, but which are now out . ii-kH ? '^ vi PREFACE TO FIRST EDITION. of date. The object in the production of this book has been to tabulate and collect the various calculations and rules which from time to time are required in the manu- facturing industries, to adapt them for reference and for instruction. The author has endeavoured to provide a book of cal- culations, and not of descriptive explanation of machinery. For this the reader is referred to various books of his and other authorship. It has been borne in mind that such a book as the present one will have many readers among the younger members of the trade, and therefore the explanations and examples have been given at some length, and with as great simplicity as possible. For this reason intricate explanations, such as necessitate algebraical and other of the deeper classes of mathematics, have been avoided, for such are only passed over by the practical manufacturer, who desires simpHcity and clear- ness, and which tend to encourage the common opinion, formed not without reason, that technical education in some directions tends too much towards theory. It is probable that some rules have been omitted refer- ring to special branches of trade or systems of calculation with which the author may not be acquainted. Should any reader notice this, a communication from him will be gladly accepted. Blackburn, /w/j/ 1889. PREFACE TO SECOND EDITION. |N preparing the second edition for the press the author heartily thanks his numerous corre- spondents for their examination, their cor- rections, their criticisms, and their suggestions regarding the first edition. All these were welcome, and have aided in making this edition still more comprehensive and useful than its predecessor. In this edition many rules and examples have been added, several parts of the book have been rewritten, and further exercises from the City and Guilds' examination papers introduced. Recent alterations in standard wage lists necessitated the addition of three new ones, including the important Uniform List, which is given in full, with explanations and examples. Other sections which have been added to are those relat- ing to coloured cloth, yarn tables, warping calculations, and details of commercial usages. The author has still endeavoured to retain the clear and simple style of ex- planation which characterised the first edition, knowing that it is preferred by many students of the leading textile industry. He hopes that this edition will meet with the same approbation as was shown to the former one in an extensive circulation and by the many correspondents. Manchester, February 1S93. vn CONTENTS. cloth calculations ..... yarn calculations commercial notes speed and gearing calculations mensuration Winding, warping, and beaming calculations slashing or taping calculations loom calculations ..... wage lists and wage calculations . HEALD and REED CALCULATIONS . ENGINE CALCULATIONS ..... ARITHMETICAL RULES AND EXPLANATIONS . ANSWERS TO EXAMINATION QUESTIONS . INDEX 13 39 54 59 66 69 78 83 lOI 160 170 175 182 205 READY INDEX OF LEADING RULES AND TABLES. PAGE Addenda to Uniform List 119 Arithmetical Explanations . . . . . . • i7S Beaming Wages List 104 Blackburn Weaving Wages List 124 Burnley Weaving Wages List . . . . . . .132 Casting-out for Jacquards ....... gg Chorley Fancy Weaving List 139 Chorley Plain Weaving List 128 Colne Coloured Goods List 152 Coloured Goods, Weights and Costs ... 25, 193, 201 Constant Numbers for Wrapping. Table V. ... 44 Contraction or Milling-up in Weaving. Table I. . . 17 Costing, Rating, or Quoting for Goods . . . -31 (Examples of same at pp. 183, 184, 188, 193, 198, and 204.) Counts of Double Yarn 46 Healds for Striped Cloth 197 Horse-power of Engines 171' Looming Wages List 108 Nelson Fancy Goods Wages List 141 Oldham Velvet Wages List 149 Pick Table. Table IX 96 xi SMTI LIBRARY Xii INDE5C OF LEADING RULES AND TABLES. Picks to J Inch, Wheels to give various Picks to the Round, Wheels to give . Preston Weaving Wages List . Radcliffe Coloured Goods List Reed Systems, Comparison. Table XI. . Reeds for Striped Cloths Reeds to be Used. Table XII. Rope Driving (Power of Ropes). Table VII Scotch Yarn Numbering. Table VL Slashing or Taping Wages List Spaced Healds Speeds of Shafts Uniform List of Weaving Wages . Warping Wages List Weight of Beams. Table VIII. Weight of Piece from Small Sample . Weight of Warp Weight of Weft Weight Table for Yarn Wrapping. Table IV. Wheels for Tape Frame .... Wheels to Use for Picks. Table X. Winding Wages Lists Wrapping Rules and Tables Wrapping Table, 7's to 8o's. Table IV. Yarn Measure. Table II PAGE 92, 96, 97, 191 86 135 141 165 165 169 65 47 105 166 59 110 105 77 29 H, 15 20 39 80 97 102 40-43 42 39 {Fo?' complete Index, see page 205. ) Meavino Calculations* CLOTH CALCULATIONS. HESE are by far the most important to the textile manufacturer. It is to them that he must refer in settHng the price that he shall receive for his work ; on their accuracy in indicating the weight of twist or of weft that he shall give for a certain price, or the length or counts of yarn he shall use, a great deal of his success depends, and thus the maker of cotton goods endeavours to deduce with exactitude and nicety the amount necessary to repay him for the material, labour, and expense to which he is put in producing a piece of cloth. No two manufacturers work on exactly the same terms, conditions, classes ot fabrics, and rate of expense, and therefore each has to adopt rules best adapted to his own position and require- ments, and no rule can be given which shall be binding to all. These facts preclude the possibility of framing- hard and fast rules, but doubtless a few generalities will be found acceptable to many readers. To obtain the Weight of Twist required for a piece of cloth many methods are employed to suit particular 13 14 WEAVING CALCULATIONS. classes of fabrics on which people are engaged, but all systems can be traced to one common to each. Rule A, — Multiply the number of ends of twist by the length of warp from which the piece is made, divide this result by the number of yards in a hank, and also by the counts of yarn used. It will be clearly seen that by this means a compara- tively accurate result will be obtained. The number of ends or threads of twist multiplied by the length of warp required, obviously includes the whole of the twist in the piece in yards, and the division by the number of hanks and counts is made simply for the purpose of converting length into weight. The counts or numbers of cotton yarn mean the number of hanks contained in a pound, and 840 yards make a hank. A fuller explanation of this is given in the section on yarn calculations. Ends in a Piece. — Firstly, we must arrive at the number of ends in the piece of cloth by Ruie B. — Multiply the widlh in the reed by the number of ends in an inch of reed. The width in the reed is usually an inch or two wider than the cloth, and no arbitrary rule can be made by which the reed width can be obtained. It will be suffi- cient for our purpose if we take it at 5 per cent, more than the cloth width ; for wide light cloths it would pro- bably suffice, but for narrow ones 5 per cent, on the width would hardly be enough to allow, and the latter remark also applies to the heavily picked or heavily wefted fabrics. Example. — Forty-inch cloth made with a 56 reed, say CLOTH CALCULATIONS. 15 5 per cent, added to 40 = 40 + 2 = 42 inches ^ in the reed multiplied by 56 = 42 252 210 2352 ends required. This gives us the first requirement of the Rule A. We now want the length of warp. It will be noted that no mention has been made of selvage ends or twisters. At the side of a piece of cloth the warp threads are laid together more closely to form a strong border, and thus a few extra ends are required to keep up the width. The number can only be exactly estimated by practice. In the case given, probably 32 would be required, 16 for each side. The number neces- sary is greater where the cloth has to come up full width, or over-width, where coarse weft is used, or where the cloth is heavily picked. Fewer selvage ends will suffice where thin picks, fine weft, bastard reeds, &c., ar' .'^spd. The weighting of the beam, and the make and setting of the temples, also affect the number to be allowed. Usually it is customary to give 20 ends at each side, or a modifica- tion of this according to the class of the cloth. Often two- fold yarn is used for selvages, and in this case no number need be allowed for selvage ends, but it must be borne in mind that 20 ends or so at each side are double ones, and each end calculated as two in getting the weight out. It may be stated that many practical manufacturers, in calculating for quotation purposes, do not trouble to add ^ For an explanation of the signs used, and also of various arithmetical lules, see section on arithmetical rules and explanations.. 1 6 WEAVING CALCULATIONS. the selvage ends as such, as it rather complicates the calculation, and trust to the allowance they make for contraction on the width, or the fact of the twist stretch- ing and becoming finer during working, to cover the selvage ends. For this reason, the reader will note the omission in most of the following examples. However, in putting orders into work and getting out the necessary particulars, such as the ends for warping, it is absolutely necessary to consider them. Length of Warp. — Different names are given to this, such as cut length, tape length, slashing length ; but they all mean the length of twist used for a piece of cloth. This is longer than the piece itself, because of the Contraction or Milling* up which takes place during weaving. The thread bends round the weft to a small extent, and if removed after having been woven would appear sHghtly wavy, and, of course, in that form occupies a shorter length than would a straight thread. It is difficult to give a hard and fast scale for this milling up, which, along with the allowance for extra ends, varies greatly with the class of cloth made, counts used, the class of looms employed, the weather, or the system of sizing. The author has at various times made many experiments and gone to considerable trouble in endeavouring to deduce formulae, based on accurate mathematical principles, that shall apply to contraction correctly in all varieties of cloths, and has seen the same attempted in various publi- cations, but in all cases unsuccessfully. The causes named above upset the most well-formed theories, and nothing but practical observation applied in repeat orders can be thoroughly successful. It is possible, however, to arrive at approximate rules for medium plain cloth only. CLOTH CALCULATIONS. 17 One Rule C for ascertaining the, contraction is to mul- tiply the picks in a quarter of an inch by 12 and divide by the counts of iveft. This, apart from the differences caused by the local cir- cumstances just mentioned, is comparatively accurate for counts of twist and weft from 25's to 50' s, and picks from 10 to 20 to the quarter inch. For higher picks 13 must be taken as the multipher. A table framed on the above rule would be as under : — Table I.— Approximate Percentage of Contraction in Warps. Picks per Quarter Inch. Counts of Weft. 24's. 30's. 36's. 42's. 4S's. 10 12 14 16 18 20 5 6 7 8 9 10 4 4l 5l 6| 7i 8 1^ 63 4 4! 5i 6 6| 2f 4 4f 5f 4 3 02 4 4j 5 Or in decimals — a more convenient method :- - Picks per Counts of Weft. Quarter Inch. 24's. 30's. 36's. 42's. 48'S. 10 5 4.0 3-33 2.85 2.5 12 6 4.8 4.00 3-43 3-0 14 7 5.6 4.66 4.0 3-5 16 8 6.4 5-33 4.57 4.0 18 9 7.2 6.00 5-14 4-5 20 10 8.0 6.66 5-71 5-0 1 8 WEAVING CALCULATIONS. Example. — Supposing we made a 90-yard piece with 42's weft and 14 pick. The table allows 4 per cent., then we should slash it 93 yards 22 inches, 3 yards 22 inches being 4 per cent.^ on 90 yards. Another rule — a useful one from its simplicity — is : — Rule CI. — Multiply the length in yards of piece required by the picks per inch^ and divide by the counts of weft. The answer is the number of inches that should be allowed. This rule does not bring the cloth out quite as long as the Rule C, but, with this exception, is quite as reliable for a limited range of counts and picks. Example. — A piece is required to be 17 J- yards long, 12 picks of 42's weft per quarter inch, 17J yards X 48 picks per inch divided by 42's gives 20 inches to allow. Thus the warp length would be 18 yards 2 inches. Ans. 18 yards 2 inches. All the remarks on contraction on the preceding pages must be understood to refer to getting bare lengths on medium makes of plain cloth only. There is a great variety in thie allowances that have to be made for contraction in fancy goods. A twill ground cloth requires much less allowance than a plain ; and some others, where the warp only interweaves at comparatively distant points, such as 8 end satins, hardly take up at all. On the other hand, certain threads in such cloths as crimps, leno, and other gauze fabrics, and in some quiltings, towellings, and piques, take up so much that the high percentage of contraction necessitates their being woven from separate beams, as there are two and even three beams at one loom. The counts of the warp yarn also make a considerable. ^ For an explanation of percentage, see section on arithmetical rules and explanations. CLOTH CALCULATIONS. 1 9 difference; 20's twist, for example, contracts more quickly than 32's. As a matter of fact, although we add a certain per- centage to the length that we intend the cloth to be, in order to ascertain the length of warp, the contraction does not take place on the cloth length, but on the warp length. Thus, if there is 10 per cent. ac^7ial conirsLCtion on a certain piece of cloth which is required to be 100 yards in length, 10 per cent, on 100 would not suffice. Ten per cent, added to 100 is 1 10. Ten per cent, con- traction on no yards is no X 10 -f- 100 =11 yards, which would only leave 99 yards of cloth. This is the reason why 13 has to be taken as multi- plier on heavier picked cloth instead of 12. The allow- ance for contraction increases in greater proportion than the increase of picks. The reader, however, will find a sufficient percentage of allowance in Table I., if taken on the cloth length only. There has now sufficient explanation been given for us to apply the Rule A. Example. — Take a 40-inch 7 5 -yard cloth, made with 60 reed, 30's twist, and 36's weft — 15 picks to the quarter inch. Add 5 per cent, to the width = 40 -f- 2 = 42 inches. 42 width. 60 2520 ends required. The rate of contraction according to Rule C. is 12 x 15 -h 36 = 5 per cent. 75 yards + 5 per cent. 75 + 3 yards and 27 inches = 78 yards 27 inches, which is the length of warp. !0 WEAVING CALCULATIONS. 2520 X 78 yards 27 inches = 198450 yards twist. We have now to divide by 840 (yards to a hank) and by the counts of twist (30's). 840)198450(236^ 1680 3045 2520 30)2361(7 lbs. 14 oz 5250 210 5040 26I 210 1 16 840 * 4 156 26 420(14 30 ns. 7 lbs. 14 oz. 120 120 Weight of Weft. To find the weight of weft in a piece. Rule D. — Multiply the width in the yeed by the picks in an inch, and by the length in yards of the piece when woven, and divide by the counts of weft and the number of yards in a hank. The explanation that has been given before about the width at which the twist stands in the reed applies to the above rule for the weft. It is necessary to take this width, which is wider than the cloth actually measures, in consequence of the weft contracting in a waved line, thus ^^.,,.-.,.....,.^..,...^..^..,..^, just as we have explained regarding the twist. There is an apparent omission in the above rule in stating: — Multiply the picks in an inch by the width, CLOTH CALCULATIONS. 21 and then by the length in yards. We ought really to multiply by 36 to get the number of picks in a yard, but then we should have a result in inches, because we took the width of cloth in inches, so instead of multiply- ing by 36 and dividing also by 36, we take the result as being in yards. Thus, if the yarn in the reed is 40 inches and picks per inch 60, we get 40 x 60 = 2400 inches of weft in an inch of cloth, which is taken as 2400 yards of weft in a yard of cloth. Thus 2400 X 36 inches = 86,400, and divided by 36 to reduce it to yards gives 2400 yards, which is the same result. Example. — For the length the actual number of yards on the counter is taken. Thus, for a cloth 40 inches wide, 75 yards long, 36's weft, 15 picks to the quarter inch, the quantity of weft is obtained as under : — Width in reed 42 inches Picks in i inch 60 2520 Length 75 12600 17640 840 yds.) 1 89000(225 hanks 1680 2100 1680 4200 4200 36's weft)225(6 lbs. 4 ozs. 216 9 16 ozs. 144 Ans. 6 lbs. 4 ozs. 144 22 WEAVING CALCULATIONS. Reeds and Wheels Necessary for Various Cloths.— At pages 169 and 97 are given tables showing the right reeds and wheels suitable for giving various numbers of ends and picks to the quarter inch. Scotch System of Calculating Weights. The Scotch system of numbering reeds and picks would necessitate rather different procedure from the foregoing. It would be described as a 40-inch, 75 yards, ii°° reed, 1 1 shots on the glass, 30's twist, and 36's weft. ii°° reed means iioo dents or splits on 37 inches, i.e., 2200 ends. As the warp is 42 inches wide at the reed, we get the ends by multiplying 2200 by 42 and dividing by 37, thus arriving at 2498 ends. To get the weight of twist, follow our previous Rule A. 2498 X 785 yards -r 840 and 30. 2498 78f 19984 3o)234K7 lbs. i2j^^o ozs. T7486 210 1249 24I 624 16 840)196717(234^ 3 1680 144 2871 24 2520 387 3517 30 3360 87 ■^ — about i 840 ^ i7__9_ Ans. 7 lbs. i2j^o0z. 30 1^ Shots on the glass means picks in the Scotch glass of 2-^^ part of 37 inches. CLOTH CALCULATIONS. 23 Rule E. — To get weft weight then we take width X shots on glass X 200, divide by 37 to reduce result to yards, by counts and by yards in a hank. Example. 42 X II X 200 X 75 -f 37 and 36's and 840. Ans. 6.19 lbs. Weig'ht of Yarn in Stripe Cloth. — In many fabrics the yarn is not evenly distributed over the surface of the cloth, but arranged in stripe form. Suppose, for instance, the example previously given (40-inch, 75 yards, 60 reed, 15 picks, 36's weft) had alternate stripes of I inch 60 reed 2 in a dent, 30's twist, and J- inch 60 reed 4 in a dent, 40's twist, ending at each side with the stripe of 30's twist. Then there would be 39 inches of alternate stripes. 39 divided by the space of two stripes (ij inches) gives 26 stripes of 40's twist and 26 of 30's twist. Add one stripe to the 30's twist for the extra one at the side, making 27. To get the ends of 30's twist add the contraction, 5 per cent., to the number 60, that being the ends in an inch of reed, 60+5 per cent. = 63 ; there are 27 stripes, there- fore there are 63 x 27 = 1701 ends. The rule previously given for getting the weight of twist is now taken, and we get 1701 X 78f ~- 840 and 30 = 5 lbs. 5 J ozs. Then there are 26 stripes of 40's twist. Half inch of 60 reed 4 in a dent gives 60 ends + 5 per cent. = 63 X 26 stripes = 1638 ends. 1638 X 78f -=- 840 and 40 = 3 lbs. 13J ozs. Rule F. — To obtain weight of warp yarn for striped goods, we obtain the number of stripes of each colour or 24 WEAVING CALCULATIONS. counts, and the ends in each stripe^ add the contraction to the ends in each stripe, and multiply by the numher of stripes. The result is the number of ends, when the previous Rule A. can be followed. The same plan must be adopted for each sort of stripe in the piece. We have just considered cloths in which the arrange- ment of the twist varies, and may now calculate for the differentiation of the weft in the same manner. Example. — Take a satin stripe cloth to be made with 24 picks of plain followed by 36 picks satin. In the plain, the ratchet to take up as usual, but in the satin there are to be two picks of weft for one tooth taken up. The cloth to be 32 inches wide, 82 yards long, 32's/4o's, 17 picks per quarter where plain. Find the average picks of weft and the weight of weft per piece. Rule G. — Find the average picks per inch, and proceed as in an ordinary calculation. In a yard of cloth woven 1 7 picks to the quarter there should be 17 X 4 X 36 = 2448 picks. In the above cloth 36 picks of satin take up the space of 18 plain. There are also 24 plain, so the double stripe occupies the space of 42 picks. 42)2448(58! stripes in a yard. 210 ^^ 336 18 picks extra in each satin stripe. 12 2 42 ~ 7 18 multiplied by 58f = 1049^ added to 2448 3497-7- 3497t picks per yard, averaging 97 f picks per inch. CLOTH CALCULATIONS. 25 Adopting Rule D. — 34 ^ 97t X 82 h- 40's X 840 = 8.06 lbs. Ans. Average picks, 97y; weight weft, 8.06 lbs. Coloured Cheeks and Stripes.— In the weaving of coloured goods, such as ginghams, oxfords, harvards, flannelettes, the ordinary rules given are almost always required, in a modified form, in costing or rating the goods, and also in getting out the particulars with which to put the cloth in work, both necessitating the separate weights of each different colour and counts. Rule H. — When there are different colours of warp in the one clothe apply Rules A. and B., but divide the weight in proportion to the number of ends of each colour in the warp plan. When there are different colours of weft of the same counts^, work out the weight by Rule D., but apportion it according to the picking plan. If the various colours are also different in counts, it must be apportioned when the number of hanks have been ascertained. Example. — Find the particulars of each colour in a piece of cloth 32 inches wide, 80 yards long, 58 reed, 16 pick, 24's twist, i8's red weft, i6's white weft, i8's blue weft, allowing 90 yards of warp, and 5 per cent, for waste. Woven 2 red 4 white 2 blue 4 white 4 blue 2 white 4 blue 4 white 2 blue 4 wh ite 32 picks, ) Warped the same. 26 WEAVING CALCULATIONS. In the colour plan out of every 32 ends, there are 2 red, 18 white, 12 blue. Warp. — 34 inches x 58 reed, allowing 28 for selvage, gives 2000 ends. Of these, 2 out of 32 would be red = 125 ends. 18 ,, „ white = 1 125 „ 12 „ „ blue = 75Q » 2000 ,, To get the weight of warp apply Rule A.— 1125 X 90 840 X 24 125 X 90 840 X 24 - 5.022 = -558 750 X 90 _ 3-348 ^4° X 24 s;^ lbs. The calculation could have been made — 2000 X 90 840 X 24 = 8.928 lbs. and the weight apportioned, but in this case the separate ends for each warp would not have been obtained, and as it is necessary to have these, in order to make separate warps to dye to the different colours, the mode given is best. If white selvages are required, a little less weight of red and blue will be used, and correspondingly more white. Weft.— AY>v\y Rule D.— M_i^ — ° — 4 _ 207.24 hanks of weft used 207.24 °4o Add waste, 5 percent. 10.36 Total hanks required, 217.6 CLOTH CALCULATIONS. 2/ The picks are in the proportion of 2 red, i8 white, and 12 blue, the same as in the warp. Out of every thirty-two hanks, — two are red equalling 13.6 hanks, divided by the counts i8's ....... = .755 eighteen are white equaUing 122.4 hanks, divided by the counts i6's . . . . . . = 7.65 twelve are blue equalling 81.6 hanks, divided by the counts i8's . * . . . . . . = 4-54 lbs. 12.94 Had all the weft been one counts, say i6's, the best plan would have been to work the calculation — 34 X 80 X 64 840 X 16 Add 5 % waste A" ^'^ TW 0^ ^^^^ ^^ ^^^ ^ -^5 ^f or y^^ of this is white =7.65 If or f of this is blue = 5-i After calculating the weight of warp and weft at the market prices, the additions to these figures are then made for dyeing the warp at the usual price for each colour, dressing the warp, drawing or twisting it, and all other wages and expenses. The total is divided by the length of cloth on counter, to give the unfinished price per yard. Where the goods are delivered finished, then an addition has to be made for the specific finishing process that it has to go through, or in the case of flannelettes, for raising, &c. Divided by the finished length, which is longer than the grey length, we obtain the finished price per yard. Many coloured manufacturers get out tables of prices per piece 28 WEAVING CALCULATIONS. or per yard to cover all these extras, and save themselves considerable trouble in calculation. All the preceding calculations are for cotton goods. Should other materials be used, we must divide by a different number of yards in the hank in each case. We give 840 for cotton ; for worsted we should take 560, for linen 300, and for single silk 840. (See section on Yarn Calculations.) Leng"tli of Yarn in Cloth. Rule J. — To get the length of twist in a piece of cloth y multiply number of ends by length of warp. Rule K. — To get length of weft in a piece of cloth, multiply width in reed in inches by picks in i inch^ and by length of piece when woven. Counts to g*ive Certain Weig'htS. — In many in- stances it is necessary to arrive at the counts of yarn necessary to give a certain weight of cloth, the width, length, reed, pick, and weight being given. Rule L. — Find the length of yarn in the piece, reduce it to hanks, and divide this by the weight in pounds. The result will be the average counts of twist and weft. Example. — Take a piece 60 inch, 40 yards, 50 reed, 12 picks, to be 6 lbs. Length of twist (Rule J), 60+5 per cent. = 63 inches at reed. 40 yards plus say 5 per cent, for milling up = 42 yards. 63 X 50 X 42 3150 42 6300 12600 132300 yards twist. CLOTH CALCULATIONS. 29 Weft (Rule K). — 63 x 48 picks x 40 yards = 63 _48 504 252 3024 3024 40 120960 yards weft. Length twist = 132300 „ weft = 120960 840)253260(301! hanks 2520 1260 840 420 6 lbs.)30iJ(5oJ's yarn 3^ li Should this be too fine for the twist and too coarse for the weft, as, for instance, when it is desirable to use 40's twist, the method adopted is to calculate the weight of 40's twist required, and deduct this from the 6 lbs., and from the balance the counts of weft can be obtained thus — . - , . . , 132300 ,, 132300 yards of 40 s twist weigh ^ ~=3 lbs. 15 ozs., then the weft weighs 2 lbs. i oz. 120960 yards of weft= 144 hanks. 144 hanks divided by 2 lbs. i oz. = 69.8 counts weft. To find Weight of a Piece from a Small Sample.— It is frequently necessary in the cotton cloth trade to estimate the weight or price of a piece of cloth from a small sample. This may be done either by comparing 30 WEAVING CALCULATIONS. different pieces of known counts of yarn, reed, and pick with the sample until an exactly similar one be found, or another system is to pick out certain lengths of threads, if the size of the sample will allow, and wrap them as will be described. The weight of a piece can, however, be calculated almost exactly from a small sample, and thus a method of ascertaining the weight is obtained which can be used either with the previously mentioned ones as a check or independently. Rule M. — Multiply the weight in grains of the small sample by the number of square inches in a yard of the required cloth, and divide by the number of square inches in the sample and 43 7 J. The answer is the weight in ounces of one yard of the required cloth. Example. — A piece of cloth 3 inches by ij inches weighs 10 grains. What will be the weight of a yard, and also the weight of a 371 yard piece 40 inches wide ? Thus a yard contains 40 X 36 = 1440 square inches. The number of square inches in-the pattern is 3 X i| = 4.^- Multiply 1440 by 10 and divide by 4 J and 43 7 J gives 7.314 ozs. as the weight of a yard. 7.314 multiphed by 37|- yards and divided by the number of ounces in a lb. (16) gives the weight per piece, 17.142 lbs. Ans. 7.314 ozs. ; 17.142 lbs. There is now in use, to a considerable extent, a yarn assorting balance adapted for ascertaining the counts of small samples of yarn such as can be extracted from small pieces of cloth. It is Staub's balance, and the mode of operation is to cut a small square out of the cloth exactly the size of a little brass templet supplied with CLOTH CALCULATIONS. 3 1 the instrument. Each of the pieces of weft in this scrap are of course of the same length, and the balance is so arranged that the number of threads that turn the scale indicates the counts. Thus 32 threads would indicate 32's counts. The same thing applies to the warp threads out of the same sample, excepting that an allowance has to be made for the weight of size. The reader will readily understand the principle of this machine when he calls to mind the fact that if an ordinary pair of scales were used with a i lb. weight at one end and a number of knots of yarn at the other, each being exactly one hank or 840 yards in length, it is clear that the counts of the yarn would be shown by the number of knots that balanced the I lb. weight. This principle is adopted in Staub's balance, the necessary modifications required in such a delicate balance, dealing with such minute weights, being made. It is surprising that such accurate results are obtained with the instru- ment in question when the fact of the normal variation of yarn counts is considered. Costing", Rating, or Quoting for Cloth. — The object of all the preceding calculations, or at least the principal use of them, is to prepare for ascertaining the cost of the fabric. Whether the weight of the warp be obtained by applying Rules A. and B. or by Rule F., or the weight of the weft by Rules D. or E. or G., whether from full particulars provided, or from a scrap pattern, the prime cost per piece or per yard is usually desired. The weight of twist is taken at the market price, the weight of weft calculated at the same, the price for weaving calculated by one or other of the systems described in a later portion of this book, and then remains the- allowances 32 WEAVING CALCULATIONS. that have to be made for winding, warping, sizing, wages, management expenses, coal, taxes, rent, oil, belting, car- riage, commission, discount, and the scores of other expenses appertaining to the manufacture of cloth. It is of course impossible to calculate the exact amount to allow for each of these items for every different piece of cloth, or even to consider them separately, while a cus- tomer may be waiting on 'Change or at the telephone for the price. It is therefore not unusual to consider for an ordinary make of plain fabric that all these expenses are covered if a sum is added equal to the amount paid for weaving the piece. Even this is not a hard and fast rule, as the state of the markets have to be taken into consideration. Taking the cloth given in a previous example, viz. : — 40 inch, 75 yards, 60 reed, 15 picks per quarter, 30's twist, 36's weft. 'O' 00 Weight of warp as previously ascer- ) ^ tained, 7.875 lbs. at 8d. .. . j Weight of weft, 6.25 lbs. at 8d. . 50.00 Weaving wage, by uniform list less 10 per cent. .... Estimate for expenses, one weaving (^ wage . . . . . . j 20.25 20.25 153*50 o^ I2S. Qid. The total of these gives the price for a 75 yard piece of cloth. As explained under the heading of coloured goods, the price of the cloth has sometimes to be given in a finished state and per yard. In other goods, especially those of fancy weave, extras have to be added for expenses over and above ordinary cloths, such as special warping, CLOTH CALCULATIONS. 33 special heading, card cutting, harness mounting or tieing up, coloured borders, extra sizing, and many other ex- penses. Most manufacturers lay themselves out for certain classes of goods, and thus can tell to a nicety what to allow for such extras to suit their own position and circumstances. Pereentag'e of Size Required. — Sizing the warp is necessary in weaving single yarn, and it is often desir- able to fix beforehand the percentage of size, so as not to put on too much or too little. Suppose a 38 inch, 2)7i yards, 72 reed by 17 picks, 3o's/4o's has to weigh 8 lbs., and we desire to ascertain the percentage of size. By the Rule A., previously given, the weight of twist is 40 X 72 X 39 J -^ 840 X 30, which gives 4J lbs. or there- abouts. The weight of weft = 40 x 68 x 37J-^ 840x40 is 3 lbs. and J oz. 4 lbs. 8 ozs. added to 3 lbs. J oz. = 7 lbs. 8|- ozs. Deduct this from 8 lbs. = y^ ozs. of size on 4J lbs. of twist. 4^ lbs. = 72 ozs.);. 5 ozs.(io.4i per cent. 72 300 288 120 The standard makes of cotton cloth are fully described in the author's book on ^' Cotton Manufacturing." Symmetry of Cloth.— In fabrics other than cotton it is necessary to utiHse many calculations for the purpose of preserving a proper balance in their fabrication. In c 34 WEAVING CALCULATIONS. the worsted trade especially, where few retilly plain fabrics are made, and where each cloth has some special feature caused either in design or colouring, or use of various counts or sorts of yarn, it is necessary to make ranges of cloth of a particular pattern, each being perfect in the relation of grist of yarn to closeness of sett, and yet varying in weight. It is necessary to change from one pattern of cloth to another, and calculate the counts of yarn or sett which shall give as firm a weave in the second cloth as the first, and sometimes this question of preserving the '' balance of cloth " arises in using a new material to replace one previously used. In the cotton trade these questions seldom arise, the standard makes of cloth are made out of the same yarns, and if the question of forming a new fabric has to be contended with, patterns are easily made, often without much expense. The majority of cotton fabrics do not depend for their utiHty on the nicety of selection of yarns and propor- tioning of grists and setts, such as do the worsted cloths, which have more important functions to perform ; and we therefore do not give many formulse for these calculations. A thorough and comprehensive explanation of one part of this subject was given over forty years ago in a book by Murphy, and we cannot do better than reprint his remarks, altering the wording slightly to adapt it to modern necessities, and giving the Stockport counts of reed as an example instead of the Scotch system, such as he adopted. CLOTH CALCULATIONS. 35 Caaming, Sleying, or Setting. '' These terms are severally employed to denote the proportioning of the grists or fineness of warps to the different setts of reeds, so as to preserve a uniformity of fabric in the same species of cloth. In order to explain what is meant by the word fabric, let us suppose that a piece of cloth is woven in any sett of reed, as, for in- stance, a 60, and that the diameters of the warp threads and the small spaces between them are exactly of the same size. Then, if we have another piece of cloth of the same texture, woven, for example, in an 80 reed, the diameters of the warp threads being also equal to the intervening spaces, then these two sizes of cloth are said to be of the same fabric, although the one is a third finer than the other, so that, when the diameters of the threads are greater than the spaces, the fabric is proportionately stouter, and the reverse when they are smaller. Now, the method of determining the several grists of yarn that will preser\^e the uniformity of fabric through the different setts of reed depends on the following analogy : — As the square of a given reed : To the grist of yarn that suits that sett : : So is the square of any other sett of reed : To its respective grist for the same fabric. '' The reason for this rule will evidently appear by con- sidering the threads of warp when stretched in the loom as so many cylinders of equal length or altitude, and the reed as the scale which measures the space in which a given number of these threads are contained; therefore 36 WEAVING CALCULATIONS. the solidities of those in any sett of reed will be to the solidities of those in any other sett of reed as their bases, or, which is the same thing, as the squares of their diameters, by p. ii, b. 12 of Euclid. But the weights of the cylinders or threads, supposing them of the same density, will be as their solidities, and a determinate number of splits or dents of any reed, or rather the interval between them, may be substituted for the diameters of the warp threads which pass through them : therefore, by the last analogy, it will be as the square of the number of splits in any given reed to the known weight or grist of yarn, so is the square of any number of splits, occupying the same space, to the weight or grist of yarn that will produce cloth of the same fabric, which is the rule given above." The rule may be expressed : — Rule N. — To find counts of yarn for a change of reed which shall suit the new reed as well as the first counts suited the old reed, midtiply the reed of the new cloth squared by the counts of yarn in the old cloth, and divide by the square of the reed in the old cloth ; or what comes to the same, multiply the reed of the new cloth by the square root of the counts of yarn in the old cloth, and divide by the reed in the old cloth. Square the residt, and it gives the counts required. Example. — An example is found by supposing with 25's twist in a 6o's reed that the space between the ends is equal to the diameter of the thread, and that we desire to find the yarn that should produce the same effect in a 70 reed. As 60 squared is to 70 squared so 25's is to the result. CLOTH CALCULATIONS. 37 or 70 squared x 25's -i- 60 squared gives the counts required. Tlie square of 70 = 4900 » 3J 60 = 3600 4900 X 25 = 122500 36oo)i2 2 5oo(343Vs twist 10800 14500 14400 100 Using the alternative rule, square root of 25's X 70 -r 60 gives the square root of the result. 5x70 = 350 60)350(51 • 300 60 The square of 5f = S4^q's twist. Ans. 343Vs- The preceding rules are used vice versa for finding suitable counts of reeds for different yarns, viz., to find a suitable reed in which to make a similar cloth to a given one but with different yarn. Rule 0. — Multiply the square of the given reed by the counts of the new yarn, and divide by the old yarn. Take the square root and you have the desired result ; or inultiply the given reed by the square root of the counts of the new yarn, and divide by the square root of the old yarn. Example. — A cloth is made with 60 reed and 25's 38 WEAVING CALCULATIONS. twist. What reed should be used with i6's twist to give a similar cloth ? The square of 60 x 16 ^ 25 = 2304. The square root of 2304 = 48 reed or The square root of 16 x 60 4- the square root of 25 = 48. An example of changing the reed and pick for a change of pattern is given among the answers to examination questions, as is also a change of yarns to give an equally firm cloth in a twill as in a plain weave. YARN CALCULATIONS. jROM the earliest stage of the cotton industry it has been found necessary to have some method of indicating the thickness of cotton threads, and there has gradually been built up a table indicating this by weight, a system which seems to be common to the whole of the British cotton trade. 840 yards are taken as a hank, and the number of hanks contained in a pound avoirdupois of 7000 grains is known variously as the counts, grist, size, or numbers of cotton yarn. Thus 20's has 840 X 20 = 16,800 yards in a lb. A yarn that has 52 X 840 yards in a lb. is called 52's. The thinner the thread the higher it is numbered. The numbers or counts signify the number of times that the yarn is finer than I's. The complete Table (II.) of Measurement is — I J yards = i thread or circumference of a wrap reel. 120 „ =80 threads = i lea. 840 5, =560 threads =7 leas=i hank. The Table of Weights is a peculiar one, being a pound avoirdupois divided into the troy weight denomi- nations of pennyweights and ounces. Table III. 24 grains = i dwt. 437i 5J =^^48 dwt. = 1 oz. 7000 ,, =291! ,, =i6oz. — lib. 39 40 WEAVING CALCULATIONS. The first line only of the table is used. The system just described applies both to twist and weft. Wrapping' Yarn. — The practical way of testing the counts of yarn is to wind on a wrap reel 120 yards of yarn and weigh this, dividing its weight in grains into 1000. Thus the thinner a thread is, the less it will weigh, and therefore a higher count is got by dividing this smaller weight in grains into the number given. A short explanation is necessary as to the manner in which we get at the number 1000. I's yarn contains I hank in i lb., therefore it contains 840 yards in 7000 grains, or one-seventh of this, 120 „ in 1000 „ As 840 yards would be too much to wrap, we take one-seventh of the length and also one-seventh of the corresponding weight as a standard. lo's yarn is ten times as fine as I's, and 120 yards of it weigh 100 grains. 1000 divided by 100 = lo's counts. We should only get the same result if we took 840 yards, which would weigh 700 grains divided into the weight of 840 yards of i's, i.e., 7000 grains, we get 7000 -^ 700 = ten times as fine as i's or lo's counts. Rule A. — To find the cotmts, wrap 120 yards, weigh it, and divide the weight in grains into 1000. Example. — Should 120 yards of yarn be wrapped and found to weigh 25 grains, then lOOO -f 25 = 40's. More than one cop might be taken, and the leas weighed together. Suppose 4 cops are wrapped, i lea or 120 yards off each, and found to weigh 3 dwts. and 8 grains, YARN CALCULATIONS. 4I four times looo must be taken as the dividend, that is 4000. 3 dwts. 8 grains = 8o)4ooo(5o's counts. 4000 Table IV. is a comprehensive one giving the counts of all yarns from 7's to Bo's, as shown by the weight of either one lea, three leas, or four leas. The table is self- explanatory, and the reader will easily see that if one lea is wrapped from either one cop, three cops, or four cops, and the weight ascertained in grains, a reference to Table IV. gives the exact counts worked out to two decimal places. With each copy of this book is presented a copy of Table IV., printed in suitable form for mounting on cardboard, and hanging in a mill or other office for reference when wrapping yarn with the wrap reel 42 WEAVING CALCULATIONS. ^ < O H t/5 u o 'N^oo (^ \0 '^00 M Ln O "^00 M vO O ^=^00 HHhHM _|1-(C^ MI-IC^ Q oocooococo OOnOOOOnO O O O O <-* ^-< >-' o vOvOvovo^ovOvo t^r^r^i> t^r^t^ t^oo oo oo oo oo B u OOOC0C0r-l00iO'rHTt<T}<<:r>05<Nt-<M00lO<NO C<JC<lf— li-Ht— Ji— IrHi-li— IrHi— li— JrHrHr-Si—fi— It-HrHrH <5 w w O M C^ CO -xi- i-n\D r^CO O O i-i M CO -^ i-0\0 t-vOO C^ O KHI-ll-ll-ll-l.-(l-ll-,l-tl-lM Q MMMNMWMC^nMNMNNMMNNMM P4 en O W O M '^vO CO M ^^ 00 M O M '^^ 00 O M '^vO Q ^^^-^'^'^-^'^^Th^uauMr^iimiirMJiiiMii h|i^ hIn Hisq h|ci H|iM Hisq h1(M Hlc^ Hisq Hlci 1-H CO '^'O t>^ On O M CO uivO CO ON H-i M O I-I CO Tj-vD MHHhHI-IP-.hHI-HMM Q cocococococococococococ0cococ0^'^'sf'=;l-'st- t/5 ■s o U rHOi-)CDCOCOCDi-(OOOOOSCOOOiOTj<iOCOOiOi-l 00pc<^•^l^-pcOI^-p■^(»(^0t-(Nt-(NI^-(^:»o0'Ji^ THrHcocococococococococoeoeocococococ<Jc<j < w w ^; O HlffJ Hici H'l^ hIim hIc? He' h|n r-'le' hIn Ho^ OhHhHMMCOco^^LO i-n\0 vO I>» t^OO OO On On O Q « u5 O W M M CO '^ iJi\0 r^OO ON O '-' 01 CO "^ u^\D r^oo on o MhHH-ll-HhHHHMI-IMl-HCI 1 Q NC<lNMMMMMnMMMC^MC^MMMClM MH^HIo^-iM CCMh1(MH|^ COWfHiO-lM MMhIoVHH* CChi<H|<M-l|T# N CO 'nJ- iJ-v lovo t^OO OOOnO'-i'-iMCOOOi-iC^CO MI-ll-ll-il-ll-ll-IMI-ll-HC^nMMM Q 8 o w o ■H|^H|cq»hH -hMh|cixi|-* i-iH}<h1(>wH( m|tj<h;(mm|-* r-(K)(HlcvcM< M M CI cocorocO'^'=^'if'^i-0"~>>-n i-nvO vO vO vO t^ Q YARN CALCULATIONS. 43 M vO h-l HH CS OOOvO OOOvO OOOvO OCOvO OvOOO OvOCO O<D0O OvOCO O hH l-H 1— 1 l-HI— 1 l-H l-H l-H hH « _ M M 05 fOcocO■^T}-r^l-nLo unvo O l>,co ooOOO'-'Cinrn-i- HI HH W OvOMCOOMDMCOOMDMOOOnOMOWOMONOnO 00 00 00 0^0^0^0^0 O O i-h w m m n M en rn ^ -ri- i-n tnvO vO r^ l>~CO 05000000i-ilOC<J0050<MCOr-ICOCOi-lOi-liOC<l(NCOCOrHt^mTt<r}l i-HnroOM^OOOO<^l ''t^O CO O n O "^CO M vO O O ^00 M vO O MNM |_|-H1-II-HI-hNM I-HI-hM 1_|_(*) M M M cocorococorococococococO"^'^'^'>f-^'^i-nu~iLni^"-i i-n\0 OO O N O W •'^vO 00 O N "^vO 00 O C^ O M '^vO 00 O M '^vO OO O (^ O l-HMCq HHMI-ll-HI-lC^Cl MhHMI-HI-HMC^ u-i Li-> ir^so vovOvO'OvovOvOvOvOvOvo t^^^^^^^^^r^^^^^^^^^t^ t~^oo Hl<M Hisq HffI Hlff" H|(M H|<M HcI Him HIo^ HiM HM H|ff» nS^ H'?' t^ 0"> O c^ en ^J-l^sO 00 C^ I-" n O I-* fO 'sl-vO t-^ 0\ O c^ ^ vnvO 00 O i-h 05 o hHI-HI-HI-ll-HI-HI-HC^O) I-II-HI-HI-II-HI-HI-HC5C5 rJ-';j-ri-'^'^'^T^r:|--^rj--7:}-i-ni-ni-oi-oi-ni-ni-niJ~ii-oi-ni-n tn i-o tn u-i ltivo OOt-COI>-Oi(NCOrHt^'^T-l0050i050(NiOCOClt^C<)t>.COOC^iOeO <plpl7^t^-oppOO^pMppcopoOO(^^OiI^-"^C^05^-lO<NpcO H|C1 HlffI rH|<^ H|0-1 iHIO^ Ho' H|iM H|H H|ffl r-!|oq pHlcfl H|C^ HiOl Hi(N O l-H l-H OJ M cOCO-^'^i-n "-ivO MD r^ t^CO OOONONOO'-HMOJ(S)COrnO |-HI-HI-H|.HI-Hl-ll-(l-HI-HI-Hl-HHHI-l|.HI-ll-HI-HI-H|.HC^OJMC<)MMMO) i-HMfOO'-<C5fO'^ ir^vO t^OO On O HH ^^ cO ^^ i-ovo I>nOO On O i-i m fn o MC5M HHI-H1-HI-HHHI-<I-HI-HI-HI-H(VJMMC5 N OJ M cocococococococococorofocococoeocococofocococoro'^ eo)^H|oiHHi whHHlc^Hhjj cchnHc^i-iM fof-itHlcVHH* wH'h,(M-<M coH^H'^■»-^l•<i^ Wf^HlCT^Kft CO -Tt ij->\0 vO t^OO OnOnO hh M c^ m-^""! i-nvO t^CO coOnO'-hmmcoQ HHl-lt-HI-HI-HI-HhHI-HI-HI-Hl-Hl-HI-HO)MMC^M 05 M M C5 OJ M M n 05 M 05 M 05 n N N n OJ 05 n M M M M M M C5 CO t-riiCOlOOilOCOCOeOOOCOOOOOOOirHlOi-lt^lOTH'^mt^i-tlOOCD pi^Mipt-pCOppC<ippeOI>»rHpO>pp7t<OSrt<P'^piprHp rHKjfHl^KOh* rHlr^Hli^mhH i-hMhM^M iH|-!;lfHl01?3|rH rHl^H|lNMhJ< i-hF^HcWM i-Hhi<HlOKOl^ t>. tv f^OO COOOOOONONONONOOOOi-Hi-Hi-Hi-H05050)OlfOrncncOO (.HhHmi-Hi.Hi-<t-(i-Hi.HhHi-ic-5 05O105OlO5M05C5OJM0505OJ0505 44 WEAVING CALCULATIONS. If other lengths are taken the followmg are the divi- dends : — 240 1 20 60 40 30 20 ^5 10 8 6 4 3 2 I Table V. i"4 leas = 4000 g 2 35 — 2000 I jj = 1000 1 53 = 500 1 8 35 = 333-3 1 4 1 6 33 33 ^^ 250 166.6 1 S 1 12 1 1 5 55 33 35 = 125 ^3-3 66.6 1 ¥0 33 = 50 1 30 33 = 33-3 1 40 1 6 1 12 33 33 35 = 25 16.6 8.3 Sometimes it is necessary to test the counts of yarn from, a scrap of woven fabric, and as only a short length of thread can be got, the ctbove table regarding the shorter lengths is useful. Having the lengths and counts given, to find the weight : — Rule B. — Divide the length by 840 and by the counts. Example. — What is the weight of 9240 yards of 44's weft ? 9240 yards -^ 840 =11 hanks. In the given counts 44 hanks weigh i lb., then 1 1 hanks weigh J^, or J of a lb. Ans. J of a lb. YARN CALCULATIONS. 45 Having the weight and counts given, to find the length : — Rule C. — Multiply the weight in pounds by 840 and by the counts. Example. — 79 lbs. of 17's yarn are required for a warp. What is the total length ? 79 X 17 X 840 79 17 553 79 1343 840 53720 10744 1 1 28 1 20 yards. In most districts except Lancashire single yarns are generally indicated by i before or after the counts — thus, i/40's, i/20's in wool or worsted districts; or, 40's/i, 2o's/i in silk districts. Double Yarns (Cotton.) — Twofold yarns are num- bered according to the single yarn counts — thus, 2/80's = two ends of 8o's twined together, which would wrap 40's. Actually, to make the resultant count 40's the single yarn should be finer than 8o's, because the twist put in the folded yarn contracts it in length and causes the twofold to be really coarser than would appear. However, neglecting this, suppose we twine one end of 40's and one of 20's, the counts would not be 15's, as a first glance would indicate, but 13.33. This can be proved by taking the weight of a lea of 40's = 25 grains, 46 WEAVING CALCULATIONS. and of 2o's = 50 grains; total, 75. 75 divided into 1000 gives the counts as 1 3 J. Another is — Rule D. — Multiply the two counts together and divide by their sum — 40 X 20 800 2. — ; — =— 7— =^33 40 + 20 60 It is seldom that two different counts are doubled together as mentioned above. Singles of the same counts make the best doubled yarn. To find the counts which must Ibe doubled with another to make a given count: — Rule E. — Multiply the two counts given and divide by their difference. To find counts of three or more folds of single yarn all of one count : — Rule F. — Divide the single counts by the number of folds — thus, 3/30o's= lOo's, and 4/8o's = 2o's. To find counts of thr'eefold yarns each of diffe- rent counts:— Rule G. — Take the weight of a lea of each, add them together^ and divide into 1000. Example. — Threefold yarn of 40's, 80's, and I20's would be 21.81. TOOO A lea of 40's = 25 grains. „ 8o's = i2j „ i2o's= 84 „ 451- — 2T ® 's counts. 45l ■ ^ X 1 -| W \^\J \AKX^*J% or YARN CALCULATIONS. 47 Rule H. — Take the highest count and divide it by each of the others and by itself, then divide the total of the quotients into the highest. Example. 120^ 80 = 1.5 I20-f- 40 = 3 T20 -4- 120= I 120 o I- r = 21.81 From these rules the reader can easily deduce the rule for four or higher fold. Scotch Numbering'. — In Scotland the quantity of yarn is often expressed in spindles, hanks, and leas, and the yarn measure is an extension of the one previously given. Table VI. \\ yards = i thread. 120 5, = 80 5, = I skein. 840 ,, = 560 ,, = 7 ,, = I hank. 15120 55 =10800 ,, =126 ,, =18 ,, = I spindle. Example.— 80 lbs. of 40's twist would be 177 spindles, 14 hanks. 80 X 40 = 3200 hanks. 18)3200(177 spindles 18 140 126 140 126 14 hanks. Gross. — Worsted yarns are occasionally sold by the gross hanks, i.e., 144 hanks each 560 yards. 48 WEAVING CALCULATIONS. Counts in other Materials and Systems. —The cotton manufacturer has occasionally for some classes of cloth to deal with counts of silk, worsted, or linen, and some information on these points will not be superfluous. Silk, — Single silk is numbered like cotton 840 yards to the hank, except for folded patent silk, when the first number indicates the actual counts — thus, 4o's/2 means two threads of 8o's, which actually wrap 40's, as already explained. This would in cotton be written 2/80's. 30/3 in silk means three threads of 90's. Worsted is numbered exactly as cotton, excepting that the. length of the worsted hank is 560 yards — thus, 3c's worsted has 30x560 yards in a pound, while 30's cotton has 30 X 840 yards. Botany yarn is a variety of worsted. Worsted folded yarns are numbered 2/60's, that is two threads of worsted 6o's. Worsted. 80 yards = i wrap. 560 „ =7 wraps = I bank. The French Cotton Standard, or Metrical System, as largely used on the Continent of Europe, is looo metres in 5 CO grammes, which is called No. I, equal to 992.4 yards in one pound — thus 1. 1 81 in Enghsh would be I's in French. Rule J. — To find the Metrical or French numbers divide the number of metres measured^ by its weight in grammes, and by 2. Thus if 24 metres weigh 2 grammes 24-^-2=12-^2 = No. 6. Rule K. — To convert French numbers into English counts multiply by i.i^. YARN CALCULATIONS. 49 Rule L. — To convert English counts into French num- bers multiply by 1. 1 8. Example. — What would English 59's be in French numbers ? 59 ^ 1. 18 = No. 50. American Systems. — In the United States, cotton yarns are counted the same as Enghsh, viz., 840 yards to the hank. Silk and worsted are also numbered as in England, to a great extent. In woollen yarns, the prin- cipal system is the ''run system." There are 1600 yards in a '' run," and the yarns are numbered according to the runs in a pound. Another, common to woollen yarns, is the ''cut" system; here 300 yards equal one cut, and the number of cuts in a pound indicate the numbers of the yarn. Doubled yarns in the States are numbered as in England. Cotton, silk, and woollen folded yarns have the number of threads placed before the counts of the single yarn, as 2/20's, 3/60's, &c. In silk the counts of the folded yarn are first written, and then the number of threads comprising the folded yarn, as io's/2, 2o's/3. Linen. — The linen standard, called the "lea," is 300 yards. The linen hank is 10 leas, or 3000 yards. I thread = 2|- yards = 90 inches = 2 English ells. I lea or cut= 120 I hear = 2 leas or cuts = 240 I hank = 5 heers = 10 ,, „ =1200 I hesp= 24 „ ,, = 2880 I spindle = 2 hesps = 48 ,, ,, =5760 Coarse linen and jute are reckoned by the weight of a spindle — thus, if 14400 yards weighs 4 lbs. it is 4 lb. counts. D eac ls= 300 yds. jj = 600 „ 3> = 3000 „ J5 = 7200 „ 53 =14400 „ 50 WEAVING CALCULATIONS. Finer linen is reckoned by the number of leas to the pound = 40's linen has 40x300 yards =12000 yards in a pound. Wool. — The usual method of indicating woollen counts is by the number of yards in a dram, and as many yards as there are in a dram are called so many skein yarn — thus, 10 skein counts means 10 yards in a dram, and as 16 drams make one ounce, 16 ounces i lb., then the num- ber of skeins X 16 X 16, i.e., 256 = the number of yards in a pound; otherwise expressed, 1536 yards =1 skein in a watern of 6 lbs. 10 skein yarn has 2560 yards in a pound. This is often called the '' Leeds system," but is largely used elsewhere. As there are 256 drams in a pound, this system may be expressed as the number of times 256 yards are contained in one pound. Several examples must now be given of finding the equivalent counts in the various systems. To convert counts of one system into those of another. Rule M. — Multiply the 'counts given by the length of the hank or lea used for that material, and divide by the length of the hank or lea in the desired system. Example. Case I. — What counts of worsted are equivalent to 30's cotton ? 30 X 840 4- 560 = 45's worsted. Case II, — What counts of spun silk are equal to 8o's cotton ? The same, 8o's. Case III. — What counts of linen are equal to 20''s cotton ? 20 X 840 H- 300 = 56's linen. YARN CALCULATIONS. 5 I Case IV. — What counts of cotton are equivalent to 90's worsted ? 90 X 560 -^- 840 = 6o's. Bundle Yarn. — Cotton yarn is often reeled and then made up into bundles, more especially for export and the home dyeing trade. Home trade bundles are usually 10 lbs. in weight, and the yarn in them is double cross reeled, often expressed XX hank. Two hanks, = 1680 yards, are reeled together; then 5 of these are twisted, making 10 hank knots. In fine numbers they may be twisted in tens, making 20 hank knots. In finding if there are the right number of heads showing at the straight end of the bundle, indicating the number of knots in the bundle, apply — Rule N. — Multiply the weight of the bundle by the counts, and divide by the number of hanks in each knot. Example. — How many heads would show at the end of a press bundle of 2/40's yarn, 10 lbs., made up in 10 hank knots ? 10 X 2o's 4- 10 = 20 Ans. 20 heads. Testing" Yarns. — In addition to wrapping warp yarn to ascertain actual counts, it is frequently tested as to strength. The lea from the reel is placed between two hooks on a testing machine, and by a wheel, worm, and screw, the lower hook is moved downw^ards, increasing the tension on the yarn. By an index finger this ten- sion is indicated on a face plate, and when the lea is broken the finger stops at the highest weight or strain that the yarn has stood. Below is a table, which will give a general idea of the comparative strength of mule 52 WEAVING CALCULATIONS. twists, having the standard turns in — i.e., for the Ameri- can cottons square root of counts multiplied by 3f, and for Egyptian, square root multiplied by 3.606. 2o's American cotton = 80 lbs. 30s )5 = 54 33 40'sj 50'sj 33 Egyptian \ American [ Egyptian = 40 „ = 50 33 = 28 „ = 37 3, 6o's 5J = 30 3, 70's 5) = 26 „ Diameters of Yarns. — In yarn the diameters of the threads do not vary inversely as the counts, but inversely as the square root of the counts. Thus, i6's is not four times as thick as 64's, but twice as thick, the square roots being four and eight respectively. To find the counts of a yarn that shall have any desired relation in thickness to another yarn, apply — Rule 0. — Extract the. square root of the counts of the given yarn, invert the terms of the proportion between the given and the desired yarns, and proceed as in proportion, squaring the result. Examples. — What yarn is one-sixth as thick as 25's, or, in other words, has one-sixth the diameter of 25's ? The square root of 25 is 5 The terms are i to J inverted „ J^ to i , ,. . ixc;ix[;x6 then as |- is to i so 5 is to — ^ = = 3^ 30 squared = 900's Ans. 900's yarn is one-sixth the thickness of 25's. YARN CALCULATIONS. 53 Another example is given among the answers to exa- mination questions. Testing Dampness. — Another test of yarn is to ascer- tain the dampness. A sample is dried at a temperature of about 1 00° Fahr., and then allowed to cool to an ordi- nary temperature of say 60°. This is necessary, because the higher temperature might drive away some of the natural moisture which all cottons contain, and which it should be allowed to regain. Suppose yarn weighing 40 lbs. at first, only scales 38 lbs. when the test is complete, then it has lost 100 X 2 -^ 40 = 5 per cent. The manufacturer gets 95 lbs. really for every lOO lbs., so that yarn costing 8d. per lb. at first actually costs 8^6 d., obtained by multiplying 100 X 8 -f 95 = 8.42 id., or about 8xV- COMMERCIAL NOTES. MANCHESTER. — Yarns are usually sold for home trade, either 2J per cent, terms, 14 days' accounts, or 3 per cent, cash terms. This is when the business is done direct. In the first case 2^ per cent, discount is allowed off the gross amount of the invoice, less coppers, payable in 14 days from date of invoice, on Tuesdays or Fridays only. The cash terms allow a discount of 3 per cent., but the account is due the Tuesday or Friday following the date of invoice. It is generally understood that goods are free on rail at Manchester. Where an agent is employed, the full agency terms are i per cent, for commission and |- per cent, for guaranteeing payment of the account. BRADFORD terms are . much longer than these. In cotton, yarns delivered before the 26th of one month are paid for on the 3rd Thursday of the following month, less 2^ per cent, discount. Thus yarns sent on the 24th of April would be paid for on the 3rd Thursday in May. If on the 27th of April on the 3rd Thursday in June, or two months' credit. Agency terms, as arranged; usually rather higher than Manchester. Carriage is expected to be paid by the seller. GLASGOW terms are somewhat similar to Bradford, but the discounts vary largely, 7 J per cent, being generally allowed. The 20th of the month is generally the date for limiting accounts for payment in the following month. 54 COMMERCIAL NOTES. 55 BELFAST buyers take deliveries to account up to the 15th of one month, paying for them on the 4th of the next month, usually less 2^ per cent. In Bradford, Belfast and Glasgow, after the times named above have expired, bills are occasionally given. There can be no doubt that the prompt terms of Manchester have added very much to the stability of its houses, to the good credit in which the cotton trade is usually held in commercial circles, and to the development of the trade. Piece Goods. — In Manchester, terms are again very prompt. Where business is done direct, the terms usually are 2^ per cent, discount for payment in 7 days. Where an agent is employed and paid I J per cent, on the trans- action for commission and guarantee, the manufacturer customarily gets prompt cash less 2 J per cent. In Glasgow, London, Bradford and Belfast the terms are, like yarn terms, much longer ; in fact the bulk of the business is done by accepting bills for some forward date. WEIGHTS, MEASURES, AND MONEYS OF FOREIGN COUNTRIES HAVING COMMERCIAL RELATIONS WITH THE TEXTILE DISTRICTS OF ENGLAND. WEIGHTS. The Metrical system of weights is the most common one, and at the same time the most sensible system. It is sometimes called the French system, and has been offici- ally adopted in most cases for weights, measures, and moneys in Belgium, France, Germany, Italy, Portugal, Spain, Norway, Sweden, Austria, Bulgaria, Holland, 56 WEAVING CALCULATIONS. Switzerland; Chili, Argentine Republic^ and the United States. In some cases the nomenclature has been altered and only the principle adopted ; in other countries, where the use of the system has not been made compulsory, it has not yet got into common use. I gramme =the unit (15.432 grains). 10 grammes = I decagramme. 100 ,, = T hectogramme. 1000 , .lor^-V , •01 or 3-^0- , •001 or yoVo' = I kilogramme. = I decigramme. = I centigramme. = I milligramme. One kilogramme is equal to 2.2046 lbs., or 35^ oz. nearly. China. — I leang or tael= .083 lbs. avoir. 16 „ „ = 1.333 „ = I kire or katty. 1600 „ „ =^33-33 » =100 5. 5, = I tan or pecul. India. — The legal standards are the metrical ones of the kilogramme (2.2046 lbs.), called the legal seer; the metre (39.37 inches) ; the litre, also called the seer (1.76077 pints). The old systems, of which there are many in consequence of the large extent of the country, are still largely used. In Bengal, i seer =16 chittacks = 80 tolas = 2.057 lbs. (avoir.). 40 seers = i maund. In Madras, the candy = 20 maund s of 40 seers each, the weight of the candy here being 493.71 lbs., is in use. By commercial usage the candy is still frequently taken at 500 lbs., and the maund at 25 lbs. In Bombay there is still in use a candy of 20 maunds COMMERCIAL NOTES. 5/ of 4 seers each, equalling 560 lbs., the seer in this case being 7 lbs. Eg"ypt. — I cantar =: 98.046 lbs. (avoir.), and consists of 100 rottoli, each rottolo containing 12 uckreh or 96 meticals. 12 dirhem make i uckreh. Japan. — i rin = 10 mo = 1.33 lbs. (avoir.). Brazil. — i quintal (100 arratel) — ioi.i861bs. (avoir.). United States. — The old English measures and weights generally adhered to, although the metrical system has been authorised. MEASURES. Metrical System. Linear Measure. I metre = the unit = 39.37 inches = 1.093 yds. 10 ,, = T decametre. 100 ,, = I hectometre. 1000 ,, =1 kilometre = .62 1 EngUsh mile. .1 or Y^Q- ,, =1 decimetre. .01 or Y^-g- ,, =1 centimetre = .393 7 inch. .001 or YoVo 55 = ^ millimetre. Brazil. — i pollegada= 1.093 inches. I vara =1.215 yards. China. — Shanghai Customs chih= 14.098 inches, Eg"ypt. — I kirat=i.i25 inches. India. — Bengal. I guz = i yard. I moot = 3 inches. Madras. I guz = 33 inches; English measures also used. Bombay, i guz =27 inches. I tussoo=i.i25 inches. Also see under "Weights." 58 WEAVING CALCULATIONS. United States.— As in England. Japan. — i sun = 1.1954 inches. 10 „ = I shaku. 100 „ =10 „ =ijo. MONEYS, France . . 100 centimes = i franc, about 9jd. Eng. Italy . . . 100 centesimi= I lire, „ 9jd. Switzerland 100 centimes = i franc, „ 9jd. Belgium = 100 „ =1 „ „ 9jd. Spain . . 100 centimes = i peseta, „ g^d. Germany . 100 pfennige = i mark, „ I2d. India. — Taking the rupee at i6d. sterling; nominal value 2/. I pice . . . . = -0833 English. 125,=! anna . . = id. „ 192 ,, = 16 annas = I rupee = i6d. „ China. — Taking the tael at 4/2 ; nominal value 6/6. I candarine . . . = .o5d. English. TOO ,, =1 mace . = 5d. „ 1000 ,, =10 „ =itael = 5od. ,, United States. — 100 cents = i dollar (|) = 4/2 EngHsh. SPEED AND GEARING CALCU- LATIONS. EFORE considering the calculations referring to the general cotton manufacturing machinery, it is advisable to mention a few fundamental rules which frequently are necessary to deter- mine problems common to all kinds of mechanism. What rules are referred to in particular are those by which we calculate speeds of shafting, and these are given first. To Determine the Speed of a driven Shaft. — When the speed of a driving shaft or wheel is given, and also the size of the gearing transmitting the power, to find the speed of driven shafts or wheels. Rule A. — Multiply the speed of the first driving shaft by the size of the driving wheel or wheels, and divide by the driven wheel or wheels. Example. — A hne shaft in a shed revolves 150 times per minute, and carries pulleys 15 inches in diameter. The looms driven by them carry pulleys 10 inches in diameter. At what speed do the looms run ? Multiply 150 by the driving wheel 15, and divide by 10. Ans. 225 revolutions. Cog's or Ropes. — The term ^^size of the wheel" in the rules includes either number of teeth, diameter, radius, or pitch circle, and refers equally to cog wheels, either 59 6o WEAVING CALCULATIONS. bevel or otherwise, or rope, or strap driving. A pair of mitre wheels are bevels whose teeth are equal in number, and therefore make no change in the speed, but reverse the direction of motion. The method of description of the driving wheel neces- sarily must also be applied to the driven. For ex- ample, if the diameter of the driving wheel be taken, the diameter also of the driven one must be adopted, and neither the radius nor circumference. Case I. Example. — The driving wheel of an engine revolving 50 times a minute is 30 feet in diameter, and by means of ropes drives a pulley on the second motion shaft of 3 feet in radius. What is the speed of the second motion shaft ? 50 X 30 feet -^ double the radius 6 = 250 revolutions per minute. Case II. — The under shaft of a loom revolves 90 times a minute, and carries a bevel of 15 teeth, which gears with a 15 on an upright shaft. At the top of this shaft a 12 drives a 6o-teeth wheel on a block of tappet plates. At what speed do they revolve ? 90 X first driver, 15 X second driver, 12 4- first driven 15, and second driven 60. Ans. 18 revolutions per minute. To Determine which is the Driver or Driven Wheel is not difficult, a glance at the gearing when in motion usually shows it. The driver is generally bright or worn on the front of the tooth, i.e., on the side of the tooth in the direction of which the wheel moves. If a wheel is worn on the side of the tooth further from the direction of its motion it is a driven wheel. Then with SPEED AND GEARING CALCULATIONS. 6l bands and straps, one side of the band or strap is tighter than the other. That which is puUing can readily be recognised as the driver. To find the Speed of the Driving" Wheel, when the speed of the last driven wheel is known, and also the size of the gearing. Rule B. — Multiply the speed of the last driven wheel by the size of the driven wheels^ and divide by the size of the drivers. Example. — A spindle is required to revolve looo times a minute, and the proposed method is to drive it from a line shaft by a 40-inch drum to a 15 -inch pulley, the latter being fixed to a lo-inch tin roller driving the I J inch wharve on the spindle. At what speed will the line shaft have to revolve ? The drivers are 40 and 10, the driven 15 and \\. 1000 X 15 X ij= 18750 40)18750 10)468 3 46I revolutions per minute. To obtain the Size of the Driving" Wheel, if the speed of the driven and driving shaft are given along with the size of the driven pulleys. Rule C. — Multiply the speed of the driven by the size of the driven pulleys, and divide by the speed of the driver. Example. — A shaft, speed 100 per minute, drives another at 70 per minute; on the latter is a 50-tooth bevel wheel. What size of a bevel wheel is on the driving-shaft ? Multiply 70 X 50 -^ 100 = 35 teeth. 62 WEAVING CALCULATIONS. To obtain the Size of the Driven Wheel, if the speed of the driver and driven wheel or wheels are given along with the size of the driver. Rule D. — Multiply the size of the drivers by speed of first driver, and divide by the speed of driven, and by the driven pulleys given, if any. Example. — A shaft making 17 revolutions per minute carries a i6-tooth wheel driving a second shaft by means of a wheel the number of teeth in which it is desired to find. On this shaft is a lOO-tooth wheel driving one of 85 teeth, which latter revolves at 16 revolutions per minute. What is the size of the first driven wheel ? Drivers 16 and 100. 100 Driven 85. 16 1600 17 II200 1600 16)27200(1700 85)1700(20 16 1700 112 112 A7ZS. 20 teeth. Worm Wheels. — These are used in order to rapidly diminish speed, as drivers only, and usually are single threaded, and are equal to one tooth as a multiplier of speed. For example, a worm wheel revolves 700 times a minute, and drives a 140-tooth wheel. What is the speed of the latter ? 700 X I -T- 140 = Ans. 5 times per minute. Had the worm wheel been double threaded it would have taken two teeth at one revolution, and the result SPEED AND GEARING CALCULATIONS. 63 would have been 10, obtained thus: — 700 x 2 -i- 140 = A us. 10. A Mang'le Wheel is used in order to reverse its own direction of motion, and as a driven wheel only. Its speed is calculated as if it were an ordinary wheel, excepting that its size is taken as one tooth less than it is actually, in consequence of the tooth at each end being used only once in a double revolution, while all the others are used twice. A lo-pinion revolving 360 times a minute drives a mangle wheel of 181 teeth or pegs. How many times will the mangle wheel revolve in a minute ? 360 x 10 -r 180 = 20 revolutions (equalling 10 in each direction). To change the Speed of a Driven Pulley, Shaft, op Wheel. Rule E. — Increase the size of the driver or decrease the size of the driven pulley in exact proportion to the increase of speed required. Case I. — To increase the speed by increasing size of driver. A loom is run at 180 picks per minute, and it is desired to run it at 200. The driving pulley on the line shaft of shed is 1 3 J inches in diameter. What size is required? Multiply 13!- X 200, and divide by 180. Alls. 15 inches diameter. Case II. — To increase the speed by decreasing size of driven wheel. The tappets of looms are set for a six-shaft cloth, and it is desired to weave a five-shaft satin. Thus the speed of the shaft carrying the tappets has to be increased in 64 WEAVING CALCULATIONS. the proportion of five to six. The driven wheel on the tappet shaft is a 6o. Multiply 60 X 5 -f 6 = 50 wheel required. Circumferential Velocity. — To ascertain the circum- ferential velocity of a wheel, driver, or C3dinder. Rule F. — Multiply the circumference in feet by the num- ber of revolutions per minute. Example. — A beaming frame drum is 6 feet in circumference, and makes 48 revolutions per minute. What is the circumferential velocity ? 6x 48 = 288 Am. 288. To Calculate Power of Leather Straps.— To calcu- late the power of single leather belts, the following Rule G. may be used : — Let H P = actual horse-power. W = \Yidth of belt. F = driving force. T = working tension from 70 to 150 lbs. V = velocity of belt in feet per minute. Then = ■^I^ H P = 1^ W = 33?|^HP 2 SSoc-o F X V Example. — A lo-inch belt running 2500 feet per minute, what horse-power will it transmit ? Assuming ing the working tension to be 100 lbs. — -r^ 10 X 100 TT -p. 2c;oo X !:oo o , F = = 500 H P = -^ ^ — =38 horse-power. Horse-power of Ropes. — The following table, com- piled b}' ]\Ir. A. G. Brown, and published in the catalogue of Messrs. J. Musgrave & Sons, Limited, Bolton, gives the power that good cotton driving ropes will transmit : — SPEED AND GEARING CALCULATIONS. 65 Table VIL— Horse-power of Cotton Driving Ropes. CA. G. BROWN.^ Velocity Diameter OF Ropes in Inches. in Feet per Minute. i i 1 1 I H 4 if 2 600 0.84 1.30 I.91 2.60 3-43 5-30 7.69 10.40 13-52 700 0.98 1.52 2.23 3-03 4.00 6.18 8.96 12.12 15.75 800 1. 12 ^'73 2.54 3-45 4.56 7-05 10.22 13.82 17.96 900 1.26 1.94 2.86 3.88 5.12 7.92 11.48 15-52 20.17 1000 1-39 2.15 3.16 4.30 5-67 8.76 12.72 17.18 22.34 1 100 1-53 2.3s 3-47 4.71 6.22 9.61 13-94' 18.83 24.48 1200 1.66 2.56 3-77 5.12 6.76 10.44 15-15 20.47 26.61 1300 1.79 2.76 4.07 5-53 7.29 11.27 16.35 22.10 28.73 1400 1.92 2.96 4.36 5-93 7.83 12.10 17-55 23.72 30.83 1500 2.05 3.16 4.65 6.32 8.34 12.89 18.70 25.27 32.86 1600 2.18 3-36 4.94 6.74 8.86 13.70 19.88 26.86 34.92 1700 2.30 3-55 5.22 7.10 9.37 14.48 21.01 28.39 36.90 1800 2.42 3.74 5-50 7-47 9.86 15.25 22.12 29.89 38.85 1900 2.54 3.92 5-76 7.83 10.34 15-97 23.18 31-32 40.71 2000 2.66 4.10 6.03 8.20 10.82 16.72 24.26 32.79 42.62 2100 2.77 4.27 6.29 8.54 11.28 17-43 25.29 34.17 44-42 2200 2.88 4-45 6.5s 8.90 ^^■75 18.16 26.35 35-60 46.29 2300 2.99 4.62 6.80 9.24 12.19 18.84 27-34 36.94 48.03 2400 3.10 4.78 7.04 9.56 12.62 19-51 28.31 38.26 49-73 2500 3.20 4.94 7.28 9.89 13-05 20.17 29.26 39.55 51-41 2600 3-30 5-09 7.50 10.18 13-44 20.77 30.14 40.73 52.96 2700 3-39 5-24 7.71 10.48 13-83 21.37 31.00 41.90 54.47 2800 3-48 S.38 7.92 10. 75 14.20 21.94 31.84 43.02 55-93 2900 3-57 5-51 8,12 11.03 14.56 22.50 32.64 44.11 57-35 3000 3.66 5.65 8.31 11.30 14.91 23.04 33-44 45.18 58.74 3100 3-74 S.78 8.50 11.56 15-25 23-57 34-20 46.22 60.08 3200 3-83 5- 90 8.69 II. 81 15-59 24.09 34-95 47.23 61.40 3300 3-9° 6.01 8.85 12.02 15-87 24-53 35.59 48.10 62.53 3400 3-96 6.12 9.01 12.23 16.15 24.96 36.21 48.94 63.62 3500 4.03 6.22 9- IS 12.44 16.42 25-37 36.81 49.75 64.67 3600 4.09 6.31 9.29 12.63 16.67 25.76 37.38 50.51 65.66 3700 4.15 6.41 9-43 12.81 16.91 26.13 37.92 51.24 66.62 3800 4.20 6.48 9-53 12.95 17.10 26.43 38.35 51.82 67.36 3900 4.25 6.56 9-65 13.12 17.32 26.76 38.83 52.48 68.22 4000 4.29 6.62 9-75 13.24 17.48 27.01 39.20 52-97 68.86 4100 4-33 6.68 9-83 13-36 17.63 27.25 39-53 53-42 69-44 4200 4.36 ^•73 9.91 13.46 17.77 27.46 39-84 53-84 69-99 4300 4-39 6.78 9.98 13.55 17.89 27.65 40.11 54-21 70.47 4400 4.41 6.80 10.01 13.60 17-95 27-75 40.26 54-40 70.72 4500 4.42 6.82 10.04 13.64 18.00 27.82 40.36 54-55 70.91 4600 4-43 6.83 10.06 13.66 18.03 27.87 40.44 54.64 71.04 4700 4-43 6.84 10,07 13.67 18.05 27.90 40.48 54.70 71.10 4800 4.43 6.84 10 '07 13.67 18.05 27.90 40.48 54-70 71.10 4900 4-43 6.83 10.06 13.66 18.03 27.87 40.44 54-64 71-04 5000 4.41 6.80 10.01 13.60 17-95 27.74 40.25 54-40 70.70 5500 4.24 6.54 9-63 13.08 17.27 26.69 38.73 52.33 68.04 60CXD 3.89 6.00 8.83 12,00 15.84 24.48 35-52 48.00 62.40 6500 3-38 5.22 7.68 10.04 13-78 21.30 30.90 41.76 54-29 MENSURATION. OME of the simpler rules of this science find a frequent use in the manufacturer's calculations as regards the machinery, and these are given below. Many readers will no doubt be fully acquainted with them, but there are others to whom the information may be acceptable. To find the Area of a Circular Space. Rule A. — Square the diameter {shown by the line A, B, Fig. i) and multiply ^J^ .7854, or multiply the radius by half the circumference. Example. — The diameter of an engine piston is 18 inches. What is its area ? Square 18= 18 X 18 = 324 324 X. 7854 = •7854 324 31416 15708 23562 254.4696 Ans. 254.46 square inches. To find the Circumference (A, C, F, B, D, Fig. 3) of a Circle. Rule B. — Multiply the diameter 4y 3.1416. 66 MENSURATION. 67 Example. — A tape cylinder is 7 feet diameter. What is its circumference ? 3.1416 X 7 = 22 feet nearly. N.B. — 3.1416 is nearly 3!-, and for rough work this is near enough for a multiplier. Radius (A, D, Fig i) is half the diameter. Fig. I. Ang'le. — An angle is the corner formed by the meeting of two straight lines, other than in a straight line, thus — / D B Fig. 2. The angle D, B, C (Fig. 2) is an acute angle, while A, B, D (Fig. 2) is an obtuse one. All angles are measured by the number of degrees 68 WEAVING CALCULATIONS. which they contain. Every circle is divided into 360 equal parts, each of which is called a degree. If two diameters of a circle cross each other at right angles, as A, B and C, D in Fig. 3, they make four angles of 90°. Every angle which contains 90° is a right angle ; half of a right angle (B, O, F) is an angle of 45°; and a third of one (E, O, D) is an angle of 30°. The right angle contains 90°, and is so called because it is the standard angle by which we measure other angles, just as the straight line is often called a right line because it is the standard by which we measure and test all other lines. To find Contents of a Cubical Block. Rule C. — Multiply length, width, and depth together. To find Contents of a Cylinder. Rule D. — Find tJie area of one end, and multiply by the length of the cylinder. WINDING, WARPING, AND BEAMING CALCULATIONS. Winding". — The process here referred to^ is winding from cops to bobbins, the latter intended for the beaming frame or warping mill. Specification of Winding" pep 1000 Looms, the latter on ordinary plain goods, about 32's twist counts. No. of winding spindles „ frames . . . . „ spindles each side of frame „ winders per side, 5 ; in all . „ winders per beaming frame Size pulley on frame end „ tin roller .... Length spindle .... Diameter wharve on front row of spindles 3) 35 bacK ,, ,j Length of lift or traverse Size of bobbin, diameter of head . barrel . 1200 4 150 40 4 12 16 in. I- 4j 33 4 „ ij 33 1 4 " 1 2 '5 To find Speed of Spindle. — Use Rule A. given on page 59. Example. — Driving shaft speed . .168 Drum on driving shaft . Pulley on frame end Size tin roller Diameter spindle wharve 11 m. 12 „ 10 ,, 1 4 33 168 X II X TO ^ 12 X ij= 1232 per minute. ^ For a full description of this and all other preparatory processes of weaving, refer to the author's book on " Cotton Manufacturing." 69 70 WEAVING CALCULATIONS. To find Percentage of Waste. Rule A. — Add two cyphers to weight of waste, and divide by weight of twist from which it is made. Example. — A winder in a week winds 580 lbs. of twist; and makes 8 lbs. of waste. 580)800(1.379 per cent. 58o_ 2200 1740 4600 4060 5400 Particulars required before Beaming. ^ To get Length for Beaming. Rule B. — Multiply warp length (explained on page 16) by number of pieces required. Example. — An order is given for 180 pieces of 75 yard cloth made from 80 yards of warp. How many yards of warp are required ^ 80 X 180 = 14400 yards. Wraps. — The length of a warp is usually expressed in wraps, of which there are various lengths. The com- monest are — 3000 yds. to the wrap divided into 100 teeth of 30 yds. to the tooth. 3500 5j 5j 55 100 » 35 » » 3564 » 55 „ 132 „ 27 „ 3600 „ „ „ 100 „ 36 „ „ 1 In some districts, notably Blackburn, Darwen, and surroundings, this process is called warping, which term is erroneous. Warping, strictly- speaking, refers only to the old style of circular mill, with heck, for making ball and chain warps. WINDING, WARPING, AND BEAMING. /I If the beaming length of the i8o pieces just mentioned had to be expressed in wraps of the first size, the calcu- lation would be — 3000)14400(4 wraps 12000 30)2400(80 teeth 2400 Ans. 4 wraps 80 teeth. Number of pieces that can be made in a set. Rule C. — Multiply the number of wraps in a set by the length of a wrap, and divide by the length of warp per piece. Example. — The set of beams consists generally of four or five wraps on each beam. How many 100 yard pieces can be made out of a 5 wrap (3500 yards) set ? Allowing 5 per cent, to the 100 yards for contraction, we should proceed — 5 X 3500 ^105 = 17500-105 = 1661. Ans. i66| pieces. Ends in a Set. — The number of ends in a set are equal to those in the piece of cloth desired to be made, and the number is ascertained as shown on page 14. The number of ends is generally too large to be held on one warper's beam, and is divided among several. If 2100 ends are required they would be made on five beams of 420 each, probably. If 3100 were required they would be obtained, per- haps, by six 444's and one 436. No definite rule can be given for this, or, in fact, is J2 WEAVING CALCULATIONS. necessary, as almost each mill is circumstanced differ- ently. Weig'ht of a Beam or Set of Beams.— To ascertain by calculation. Rule D. — Multiply the total ends by the length in yardsy and divide by 840 and the counts. Example. — A set of beams consists of five, each 420 ends and 4 wraps (3000 yards long). Counts 30's. What is the weight of the set ? 5 X 420 = 2100 ends. 4 X 3000 = 12000 yards. 12000 2100 1200000 24000 840) 2 5 200000(30000 2520 30)30000 Ans. 1000 lbs. weight. Counts of Beams. — To find the counts of a beam or set of beams by calculation. Rule E, — Divide the length by 840 and the weight. The object here is obviously to find the number of hanks by using 840 as a divisor, and then find the num- ber of hanks in the pound by dividing by the weight. The number of hanks per pound is equivalent to counts. Example. — A beam weighs 210 lbs., and contains 500 ends. It is 15,000 yards long. What are the counts? 15000 multiplied by 500 and divided by 840 and 210 gives 42.51. yi;zi". 42.5 1 's counts. WINDING, WARPING, AND BEAMING. 73 Warping" Calculations. Ball or Chain Warping", otherwise circular-mill warping. This process, almost indispensable at one time for all varieties of goods^ is now largely superseded by the beaming frame for plain and grey goods and the section-warping for coloured goods, but is still used to a considerable extent in the coloured weaving trade and in many of the outside manu- facturing districts. The mill is usually from 10 to 18 yards in circumference, with staves set a foot apart all round ; for sample work, small mills of 5 yards in circumference are used, and in Scotland 4 or 5 ells of 45 inches and 10 feet high. The bank or creel is sometimes constructed to hold as many as 500 bobbins, although it is more usual to work a much less number. To Determine the requisite Number of Revolutions to make a Warp. Rule F. — Divide the length of warp required by the circumference of the mill. Example. — For a 360-yard warp with an 18-yard mill, 20 turns would be required before reversing. For a warp of 100 ells on a 4-ell mill, 25 revolutions would be required. Another example. — How many revolutions of the mill will be made in one layer of a sample warp, 2000 ends, 20 yards, allow 24 inches at each end for gaiting, a 1 5-yard mill being used ? The total length of warp is 2 1 yards i foot, as 4 feet are allowed altogether for gaiting. 1 5 yards divided into 2 1 J- yards gives one complete round and 6 J yards (equal- 74 WEAVING CALCULATIONS. ling 19 feet) over. Therefore the first layer would occupy one round and 19 staves towards another round. Layers. — Generally, in fact almost always, the number of ends in the warp is several times as many as there are bobbins in the creel, and the mill has to be turned back- wards and forwards till the required number of layers have been obtained. The number of ends in the warp determines the number of layers to be warped. Rule G. — Divide the number of ends in the warp by the number of bobbins in use in the creel. Should there be 200 bobbins in the creel, and 2400 be required to form a warp, then 2400 -^ 200 =12 layers are required. These are usually expressed in bouts, millgangs, or returns, which mean once down and once up. Therefore for 2400 ends six bouts would be required. Thus, six bouts of an 18-yard mill, with 200 bobbins in the creel and 20 turns of the mill before reversing, would give a warp of 360 yards length and 2400 ends. The number of bobbins in the creel should always divide into the number of ends in the warp without remainder, otherwise it necessitates breaking out at the last layer. In Scotland 20 splits equal I porter, and the number of ends in a warp are expressed frequently in porters and splits — thus, 60 porters 10 splits. The number of bobbins in the bank of a mill equals therefore the number of splits (two ends) in a complete bout. To find the number of bouts it is usual to use — Rule H.— 7b divide the mimher of splits in the web by the bobbins in the bank. WINDING, WARPING, AND BEAMING. 75 Example. — With i lo bobbins in bank, and 6o porters 10 splits in the web. How many bouts of the mill are required ? 60 20 1200 10 110)1210 II Ans. 1 1 layers. Weight of Warp. — To find the weight or counts of a ball warp use the rules given on page 72 for a beam warp. Pinion. — The pinion at the upper part of the mill re- quires changing smaller when very long warps are made so as to get the layers closer together, and thus more length on the mill. The sizes are in exact proportion to the distances from centre to centre of each layer, but usually do not require such exact adjustments to neces- sitate any examples being given here. Beaming". Specification for 1000 Looms, plain goods, about 32's twist. No. of beaming frames Capacity ...... Creel either V or bed creel. Measuring roller circumference . Cylinder diameter .... Beam, length between flanges ,, diameter of flange . „ „ timber Measuring" Motion. — For the purpose of measuring the length of yarn on the beam, each beaming frame is 10 500 en ds 18 in. 20 15 54 5? 22 J' 5 55 76 WEAVING CALCULATIONS. supplied with a roller half a yard in circumference, round which the yarn passes; on the end of this roller is a worm driving a worm wheel of 54 teeth, which we will call B ; on the stud carrying B is a second worm driving a worm wheel C of 132 teeth. The worm only takes one tooth at each revolution, therefore a complete revolu- tion of the first worm wheel represents a length of 27 yards having passed the measuring roller; this is equal to one tooth only on the second wheel B ; therefore, a complete revolution of the latter means 3564 yards — technically called a wrap — J X ^^^^— = 35^4. If a warp contains 4 wraps and 7 teeth, it is 14,445 yards long = 4 X 3564 added to 7 X 27. WINDING, WARPING, AND BEAMING. 77 m &^ .vo ON CO ^ ON CO MO o CO vo o TJ ^ _M J CO CO '^ ^ ^ lO uo VO VO VO r-- rt O ^ M M M Hi l-l M M M M M M >-. lO M , '^ El .• o ^ CO W !>. M IT) ON -t CO N M _0I ^ t- t^ J>. CO CO ON ON Os o o M II o — ' M M W M M 1— 1 l-l H CI M M ^ ^ o (U n3 E-5 . o lO lO o to o lO O lO o 03 o M M CI N CO CO '^ rf lO ^ " M N N a M CS| a N CSl M M CO Tt- "O lO CO . o E-i ,/^ N CO CO On lO O VO M !>. CO CO ^ M CO CO '^ '^t U-) VO VO !>. t^ CO 1/3 CO -i c-. w c^ c^ M M N N CI W M J3 H „• '^ o ir^ ^ M CO lO a ON VO CO O CQ ^00 On c^ o M M M CO CO -^ lO P^ ^ « -H (^ M M CO CO CO CO CO CO CO CO c/5 H . CO MD O ^ !>. w -:!■ CO H lO CO ■^ ja ^ ^ '^ lO lO to VO VO VO t^ ir^ r-- o ^^ M M M l-l M M M M H M M >-. lO o o o^ . u^ Eh „• ^ CO 00 C) t^ l-J lO o T^ ON CO h-i ja ^ t^ CO CO ON ON o O M M 1— i M II o ^^ M M M l-l M ri w M M M W A ^ o <u E^ / o lO H vo H >o M r^ C^ t-- CO Xtl J M 1— 1 M ri CO CO '^ ^ lO lO VO CO ^ M M C^ 01 n M M M M w M o o o ro E-i .CO ^ O vO M CO '^ O VO N CO O _M J CO '^ to lO vo VO r^ CO CO ON ON !/5 O — ' 0) 01 a 01 N M M cq a 01 M Oh CO > E-i .CO lO CO O t>. in N ON i:^ '^ CI 02 % OS O M M N CO -^ '^ in VO r^ s C4 — c^ CO CO CO CO CO CO CO CO CO CO <-M o 'fi O O o o o o O O O o O d O M M CO vt- u^ VO t^ CO ON o 'sf- •^ ^ "^t ^ •^ Tj- '^ 'st- ^ lO o a, C fcyj <u =i g c t-i Oqn Si o « 2 o ^ a., ^•^'^ 0) ,2 !2 (rf :t3 .2 t/5 -*0 t s c5 ?:; C^ 1) ,_ CO >-« ^^ O O m m Oh O <u lin o C b/D. Aia ■i ^ T3 r^A<A OJ rr-) Tj -^ c o CO SLASHING OR TAPING CALCULATIONS. Specification for 1000 Looms, plain sorts, 32's in counts. No. of frames if weaving about 12 to 14 pick cloth, 4 „ „ „ 16 to 20 „ 3 ,, » » 24 to 30 ,, 2 Cylinders 7 feet and 4 feet diameter. Width to suit looms. Marking" Motion Calculations. — To enable the weaver to finish the piece when a required length has been woven, the warp is marked at the sizing frame at a cer- tain length. This is generally done for plain goods by means of a measuring roller 14.4 inches in circumference, round which the twist passes. On the end of this is a tin roller wheel driving a change wheel or stud wheel. By means of a worm on the same stud the motion is transferred to a bell wheel of 45 teeth, which drives a marking cam so arranged as to gradually lift and sud- denly drop a hammer, which smites the warp against a block soaked in some colouring matter. To g'et the Wheels for a certain leng-th, e.g., the Stud Wheel. Rule A. — Multiply the length of mark desired in inches by tin roller wheel, and divide by the bell wheel and the cir- cumference of tin roller. 78 SLASHING OR TAPING CALCULATIONS. 79 Example. — Suppose we desire to mark every 3O2 yards, and have on a tin roller wheel of 36. 3o|- yards = 1098 inches. 1098 X 36 -f- 45 and 14.4 1098 __36 6588 3294 45)39528(878.4 360 352 315 378 360 180 14.4)878.4(61 teeth in stud wheel 864 144 144 Note. — 45 X 14.4 equals 648, which is generally used as divisor. To get the Tin Roller Wheel. Rule B. — Multiply the circumference of measuring roller by bell wheel and by stud wheel, dividing by the length of mark required. Example. — A mark of 45 yards 32 inches is required with a 5 1 stud wheel. What tin roller wheel must be used ? 14.4x45 = 648 X 51 = 33048 45 yards 32 inches = 1652)33048(20 33Q4 8 Ans. 20 tin roller wheel. This is not exactly right, but 20 is the nearest wheel that can be got. 8o WEAVING CALCULATIONS. A very simple and yet reliable rule has been sent to me by a correspondent. It is To g'et Wheels for any Length of Cut. Rule C. — Divide the length in inches desired by 648 (14.4 X 45). The quotient in the form of a vulgar fraction shows the wheels required. The numerator will represent the stud wheel, and the denominator will indicate the tin roller wheel. Example. — Take the example from the previous page, for the 30 J yard cut. 30 J yards =1098 inches; 1098 61 divided by 648 = -^, then the stud wheel is 61 and the tin roller wheel 36. To find what length the wheels will give. Rule D. — Multiply 648 by the stud wheel, and divide by the tin roller wheel. Example. — What length will 44 tin roller and 100 stud wheel give ? 100 X 648 = 64800 44)64800(1472! 44 208 176 36)1472! inches 320 40 yards 32! inches 308 120 88 3^ 44 Ans. 40 yards 32! inches. Dhootie Marker. — In marking dhooties, in addition to the smit for the end of the piece^ additional smits have SLASHING OR TAPING CALCULATIONS. 8l to be made where the heading for each scarf has to be inserted. Usually this is done by having an additional train of wheels and an extra marker, called a dhootie- marker, to strike 3, 4, or 6, &c., times for the cut- marker's once. In Fig. 4 a special arrangement is shown. The usual wheels are shown at /i, the worm z, the bell wheel /^, the bell shaft cut-mark hammer 7/1. The other IT Fig. 4. — Dhootie-Marker. wheels and the marker 7i refer to the dhootie-mark ; d is fixed to the stud and drives c with d, a pinion on another stud ; the wheels e, /, and ^ complete the train, and on the same shaft as ^ a cam operates the dhootie-marker. This is arranged to strike any number of times for once of the cut-marker, regulated by the number of teeth in the change wheel /, 10 teeth in which give one mark F 82 WEAVING CALCULATIONS. to a cut mark, 30 give three marks to a cut, 100 ten marks to a cut, and so on by somewhat similar systems for higher numbers. This marker is made by Messrs. Howard & BuUough. To find the actual Pereentag'e of Size put on the Yarn. Rule E. — To find the size actually put on the yarn, sub- tract the weight of the unsized yarn less waste from the sized yarn — e.g., 1639 actual sized weight. 1300 weight of yarn before sizing less waste. 339 = weight of size. 1300)33900(26.07 per cent, actual. 2600 7900 7800 100 Example— Counts after Sizing*.— Apply Rule E., page 72. 2280 ends 4 wraps of 3564 yards each weigh 1639 lbs. 142K6 X 2280 ^ , -^ = 23.61's counts. 1639 X 840 The author, in his book on '' Cotton Manufacturing," describes the process of sizing, also sizing materials, and machinery. LOOM CALCULATIONS. |RITHMETICAL problems, as far as regards weaving machinery, bear reference chiefly to speeds of different parts of the machine. These are necessary ones, but not very in- tricate, and the rules common to all speed calculations previously given can be here applied. The take-up motion is a special piece of apparatus, and requires careful consideration, as do also one or two calculations referring to fancy work. To get the Speed of the Loom from the Eng'ine. Rule A. — Multiply the speed of the engine by the dimen- sions of driving wheels^ and divide by the dimensions of the driven wheels. Example. — Engine speed, 46 revolutions per minute; spur driving wheel, 105 teeth; pinion, 53 teeth; second motion driving wheel, 52 teeth; line shaft in shed, 49; drum on line shaft, 15 inches diameter; loom pulley, 8 inches. 83 84 WEAVING CALCULATIONS. 46 X 105 X 52 X 15-53 X 49x8. 46 105 230 460 49)71083(1450 4830 49 52 220 9660 196 24150 248 25II60 245 15 33 1255800 25II60 8)1450 53)3767400(7] :o83 181I 371 57 53 440 - 424 160 Ans. 181 revolutions of crank shaft or picks per minute. This is the calculated speed, but about 4 per cent, may be allowed for slip, which leaves a result of about 174 picks per minute. Changing Speed of Loom. — An example is given on page 63. To obtain Speed of the Bottom Shaft (in the plain loom called the tappet shaft) from the Crank Shaft. Apply Rule A,, given on page 59. ^ If all the fractions had been taken into account the result would have been slightly greater. In this and some other connections where it is not of importance to express the result in infinitesimal quantities, the fractional remainders are left out for convenience in calculation. LOOM CALCULATIONS. 85 Example. — A loom crank shaft revolves 180 times in a minute. It carries a 41, driving an 82 on the bottom shaft. What is the speed of the latter ? 180 X 41 -f- 82 = 90 revolutions per minute. To obtain the Number of Revolutions of a Crank Shaft for One Revolution of a Twill Shaft, Tappet Shaft, or Tappet Motion. This corresponds with the number of picks per minute that the motion is adapted for. Examples. Case I. — When the twill shaft is under the loom and parallel to the bottom shaft — '.g., Wheel on end of crank shaft 40 „ „ of bottom shaft 80 5, bottom shaft (driver) . 24 „ twill shaft . 36 How many revolutions does the crank shaft make for the twill shaft one ? Apply Rule B., on page 61. I X 36 X 80 -^ 24 X 40 = 2880 ^ 960 = 3. The motion is then for a three-leaf twill. Case II. — For a woodcroft tappet. The crank shaft carries a 12; the tappet wheel is 108. How many picks are there to the round ? I revolution of tappet x 108 -^12 = 9 picks to the round. The same rule applies to side tappets without inter- mediate wheels, the carrier of course not entering into the calculations. S6 WEAVING CALCULATIONS. Case III. — For side tappets with an intermediate pair of wheels. In this arrangement the crank shaft carries a driver gearing with the first of the intermediate wheels on a stud. On the same stud is the second intermediate wheel driving the wheel on the tappets. Suppose the train of wheels is 20 driving 50, 18 driv- ing 72, the 50 and 18 being the intermediate wheels on the stud. How many revolutions of the first driver (the crank shaft) are made for the tappet one ? Apply Rule B., on page 61. I X 72 X 50 -^ 20 X 18. 72 5^ 20)3600 18)180 10 Am. 10. Case IV. — A tappet motion, such as Smalley's sateen motion. Example. — Crank shaft wheel 41, driving 82 on bottom shaft. Bottom shaft carrying 36 twist gear, driving 36 on upright shaft. 12 at top of upright shaft, driving 60 on tappets. How many revolutions of crank shaft for tappet shaft one ? Applying the Rule B., on page 61. I X 60 X 36 X 82 -=- 12 X 36 X 41 = 10 picks to the round. To find the Wheel or Wheels required to give the required number of Picks to the Round. Use Rule C, on page 61. LOOM CALCULATIONS. 8/ Examples. Case I. — Where the twill shaft is under the loom parallel to the bottom shaft. Suppose the crank shaft to carry a 41, driving an 82 on the bottom shaft, and we require the bottom shaft to drive the twill shaft to give 5 picks to the round, or, in other words, to make I revolu- tion for the crank shaft 5. We require the size of two wheels, and shall have to estimate one. Say we have a 100 on the twill shaft, then we want the size of the driver on the tappet shaft. Applying rule — I X 100x824-41 x5 = 4o the wheel required. Then the two wheels required are in proportion of 40 to 100, or say 20 and 50. Case II. — A woodcroft tappet. Picks to round re- quired, 16; size of tappet wheel, 192. How many teeth on crank shaft wheel ? Applying rule, divide driven wheel by speed of driver — 192 — 7- = wheel required on crank shaft. Ans. 12 teeth. Case III.— Side Tappets.— To find one of the drivers to give a required speed, use Rule C, on page 61. For a 14 pick to the round, with a 10 on crank shaft, 35 on stud, and 40 on tappets. Find the driver on the stud. Multiply the speed of the driven shaft I by the driven wheels 35 and 40, and divide by the speed of the driver 14 X driving wheel 10. 35 X I x4o= i4oo _^^ 14 X 10 = 140 88 WEAVING CALCULATIONS. The train will be — lo driving 35 10 „ 40 If it be one of the driven wheels that is wanted, apply Rule D., on page 62. Example. — 13 picks to round. 13 picks to the round must be woven, the wheel on the crank shaft being 25 ; the stud drives 13, and the last wheel on the same shaft as the tappets is 65. Then, to get the size of inter- mediate driven wheel on the stud, multiply the speed of driver 13 by the drivers 25 and 13, and divide this by the driven 65. I X 13X 13X 25-^65 = 65 the wheel required. If both intermediate wheels have to be found. Rule B. — Find the speed that the driven and driving wheels give, and this is to the required speed, as the two required wheels are to one another. Example. — 17 picks to the round are required. There is a 10 on the crank shaft and a 25 on the tappets. What have the two intermediate wheals to be ? The speed of the crank shaft for the tappets i with the given wheels is 25-MO = 2|-. Then as 2 J is to 17, so the required wheels. 10 and 68 would do, or 15 and 102. Take the latter, the train would then be — 10 driving 102 15 n 25 Case IV. — Tappet motion above loom driven from bottom shaft by an upright wheel. Example. — 7 picks to r6und required, or the crank LOOM CALCULATIONS. 89 shaft to revolve 7 times for tappet once. Crank shaft wheel 4O; driving 80 on bottom shaft, 36 on bottom shaft driving 36. JO on tappets. What is the size of the intermediate wheel ? Applying the Rule C, on page 61 : — 70 X 36 X 80 -f 7 X 36 X 40. Ans. 20. The train of middle wheels would then be — 40 driving 80 36 » 36 20 „ 70 Leverag'e. — To find the distance moved through by one end of a lever. Case I. — Levers of the first order, when the fulcrum or centre on which it moves is between the power and the work. Rule C. — The length of the weight arm multiplied by the distance through which the power arm is moved, and divided by the length of the power arm, gives the distance through which the end of the weight arm moves. Example. — ^A lever 10 inches long, working on a centre 4 inches from one end, is moved i inch at its longer end. How far does it move at its shorter end ? The weight arm 4 inches X i inch -i- the power arm 6 inches = f inches. Case II. — Levers of the second order, i.e., where the weight is between the fulcrum and the power. The same rule applies. Case III. — Where the power is between the weight and fulcrum. The same rule applies. go WEAVING CALCULATIONS. Size of Shed. — The ordinary treadles of the plain loom are levers of the second or third order, and the calculation of the size of the shed from given dimensions of the tappets and treadles forms a good example in leverage. Suppose the stroke of the tappet, or the dis- tance through which it moves the treadle bowl, between the outer and inner circle is 3|- inches. The treadle, a lever of the second order, is 30 inches long, the treadle bowl being 25 inches from the treadle pin, and the healds connected 15 inches from the pin or fulcrum at a point which we will call N. Then the movement of the heald from its highest to its lowest level is equal to the distance moved through by the point N — i.e., 2.1 inches — for if the bowl moves 3 J inches, the point N -7 i V T d moves (by the rule) — = 2. i inches. This gives the size of the shed at the healds. Suppose the heald in question is 7 inches from the fell of the cloth, the shuttle passing through the shed 2 inches nearer to the cloth, then the size of the shed at the heald multiplied by 5 and divided' by 7 gives its size at the point where the shuttle passes through, or 2. 1x5-1-7= 1.5 inches. Take-up Motion. — Among cotton looms the positive take-up motion is generally used. The cloth as woven is, by this arrangement, drawn on the, cloth roller a certain distance at every pick, the amount of take-up being regu- lated by wheels. Fig. 5 shows a sketch of the arrange- ment. The construction is similar" for almost all looms, but there are different gears and sizes of wheels used. In Harrison's gear the rack wheel of 50 teeth receives its motion from a pawl, worked by one of the slay swords. LOOM CALCULATIONS. 91 On the same stud is the change wheel. This gears with the stud wheel, 100 teeth, firmly connected with the pinion of 12 teeth, driving the beam wheel 75- The beam or sand roller is 1 5 inches in circumference, and is covered with glued sand, perforated tin, or some rough substance, to hold the cloth firmly. The fabric is wound on the cloth roller below this by means of contact with the sand roller. The chano'e wheel is varied to ffive Fig- 5- changes of picks in the cloth, a larger wheel giving fewer picks in the quarter inch. Each gear has a constant number associated with it, called a dividend. To ascertain the Number of Picks in a Quarter Inch of cloth. If the number of teeth in the change wheel be divided into this dividend, it gives the picks in a qiim'ter inch of cloth. Imagining that a change wheel, having the 92 WEAVING CALCULATIONS. effect of only one tooth in a revolution, could be applied, then the dividend is the number of picks that the loom would run before the sand roller advanced a quarter of an inch. Suppose 528 dividend is taken, this represents a change wheel supposed to have one tooth. If a wheel of 66 teeth be put on, only gV ^s many picks to the quarter will be inserted — i.e., ^-^^ = 8 picks. To ascertain the Number of Teeth in the wheel required for a number of picks per quarter inch of cloth. Divide the number of picks per quarter inch into the dividend, and select the nearest wheel to the result obtained. Also see the following pages and Tables IX. and X. Dividend. — The method of obtaining the dividend for any ordinary gear is — Rule D. — Multiply all the driven wheels together, and divide by the drivers and the circumference of the roller, thus — Rack wheel x carrier wheel x beam wheel Pinion wheel x number of 5 inches in circumference of taking-up roller afterwards adding i J per cent, for shrinkage of the cloth after being released from the tension of the loom. Thus Harrison's gear gives — 50 X 75 X 100 -=- 12 X 60= 520.8 Add i^ per cent. = 7.8 Dividend . 528.6 usually taken as 5.28 LOOM CALCULATIONS. 93 The principal g'ears in use in Lancashire are: Rack Wheel. Stud and Carrier Wheel. Pinion. Beam Wheel. Circumf. Take-up Roller. •6 c s J. Harrison & Sons, now"\ J. Dugdale & Sons . ./ Willan & Mills . . . . ] J. Dugdale & Sons . . . r J. & R. Shorrock . . J Butterworth & Dickinson Pickles 50 24 100 120 120 89 12 15 18 15 75 75 100 90 15 15 16 15 528 507 528 To weave heavy pick cloth with, say, the first-named motion, the rack wheel might be increased to 60 from 50, and the dividend would then be 634. Pickles' gear also has a swing pinion 24, and two change wheels. To find the change wheel required, multiply the change wheel on the rack stud by the picks per quarter inch, and divide by 9 — Equal to 4 teeth per pick for a 36 change wheel. 27 By using this motion both heavy and light pick cloth can be woven without a great variation in the wheels. The dividend is not given for Pickles' motion ; in fact the constant number is a multiple and not a dividend. There are two extra wheels in Pickles' motion on a swing between the stud wheels and rack wheels. One of these is a swing pinion, 24, and the other is a change wheel. There are thus two change wheels. The one on the rack stud is generally considered a standard one, and is either 94 WEAVING CALCULATIONS. 1 8, 27, 36, or 45, each of which, it will be noticed, is a multiple of 9 : a 36 is often used. The other change wheel on the swing stud is the one altered for picks, and supposing a 36 standard to be used, then the number of picks per quarter inch multiplied by 4 gives the change wheel required. If the standard were 27, then the number of picks multiplied by 3 gives the wheel required. If an 18 standard be used, then the number of picks multiplied by 2 gives the change wheel. The advan- tages of this motion are : — the possibility of obtaining the same fraction of a pick in difference by changing one tooth, whether in low pick or heavy pick cloths — in other Vv^ords, each tooth having the same value ; also a smaller range of change wheels, as a change of the standard wheel makes the same set of change wheels serve for heavy picked as well as for light picked cloths ; also the possibiHty of changing to a J pick in heavy goods, which is very difficult and unusual with the dividend system of gears. Example. — Applying .Rule D. to Pickles' motion, the drivers are 24 rack wheel, the variable change wheel, which we want to find, the 89 stud wheel, and the 90 beam wheel. The driven wheels are the standard wheel, the swing pinion 24, and the stud pinion 15. Then £4^l9Jl_9° 24 X 15 X 60 8.9 Add I J per cent. .1 9-0 The calculation is not yet completed, as we have another change wheel — the standard. Suppose it is to LOOM CALCULATIONS. 95 36 be a 36, and using 9 as a divisor, the result is — , or 4. 27 18 . If a 27 standard be used, ^^ = 3. With an 18, ^ — is 2. ^ 9 9 The figure 4 obtained with the 36 is not a dividend but a multiplier if we desire to find what wheel is used for a certain number of picks per quarter, or divisor if the picks are required from the wheel. Example. — Suppose a 36 standard is used, and the picks per quarter inch required are 20 : 20 multiplied by 4 gives the number of teeth — 80. If 17 picks are required per quarter inch, 17 x 4 = 68 wheel. On the contrary, the figure 4 may be a divisor if the picks are required — e.g.y if a 48 wheel is used, what are A 8 the picks per quarter inch ? — = 12 ; or with a 61 wheel, 4 — = 15 J picks per quarter inch. 4 Table IX.— Pick Table, g'iven in picks to the quarter inch. Atherton's Gear. Dickinson's Gear. Harrison's Gear. Beam wheel . 80 Beam wheel . 7'5 Beam wheel . 75 Beam wheel . 7s Beam wheel . 7^ Stud wheel . 120 Stud wheel . 120 Stud wheel . 120 Stud wheel . 100 Stud wheel . 100 Rack wheel . 60 Rack wheel . 50 Rack wheel . 80 Rack wheel . 50 Rack wheel . 60 Pinion wheel. 15 Pinion wheel. 15 Pinion wheel 15 Pinion wheel. 12 Pinion wheel. 12 Emery bm. 15 in. Emery bm. 13 in. Emery bm. 15 in. Emery bm. ij in. Emery bm. 15 in. Dividend . . 649 Dividend , . 507 Dividend . . 811 Dividend . . 528 Dividend . . 634 u-3 a)_- 4)_- bcv (U_. be D n <u Picks. P 4) Picks. C V Picks. C V Picks. Picks. sl 6^ S^ U^ 15 43.26 15 33-8 15 54-06 15 35.2 15 42.266 16 40.56 16 31.69 16 50.68 16 33 16 39.625 17 38.17 17 29.82 17 47-7 17 31.06 17 37.294 18 36.05 18 28.17 18 45.05 18 29.33 18 35.222 19 35.21 19 26.68 19 42.689 19 27.79 19 33-368 20 32.45 20 25.35 20 40.55 20 26.4 20 31.7 21 30.904 21 24.1:43 21 38.623 21 25.143 21 30.19 22 29.5 22 23.045 22 36.863 22 24 22 28.818 23 28.217 23 22.043 23 35.26 23 22.956 23 27.565 24 27.041 24 21.125 24 33-791 24 22 24 26.417 25 25.96 25 20.28 25 32.44 25 21.12 25 25-36 26 24.961 26 19.5 26 31.192 26 20. 308 26 24.385 27 24.037 27 18.778 27 30.037 27 19.556 27 23-481 28 23.178 28 18.107 28 28.964 28 18.857 28 22.643 29 22.379 29 17.483 29 27.965 29 18.207 29 21.862 30 21.633 30 16.9 30 27.033 30 17,6 30 21.133 31 20.935 31 16.355 31 26.161 31 17.032 31 20.452 32 20.281 32 15.884 32 25-343 32 16.5 32 19.813 33 19.666 33 15-364 33 24.575 33 16 33 19.212 34 19.088 34 14.912 34 23-852 34 15-53 34 18.647 35 18.542 35 14.486 35 23.171 35 15.0S6 35 18. 114 36 18.027 36 ■14.083 36 .22.527 36 14.667 36 17.611 37 17-54 37 13-703 37 21.918 37 14.27 37 17.13s 38 17.078 38 13-342 38 21.342 38 13-895 38 16.684 39 16.641 39 13 39 20.794 39 13.538 39 16.256 40 16.225 40 12.675 40 20.275 40 13.2 40 15.85 41 15.829 41 12.366 41 19.78 41 12.878 41 15-463 42 15.452 42 12.071 42 19.309 42 12.571 42 15-095 43 15-093 43 11.791 43 18.86 43 12.279 43 14.744 44 14-75 44 "•523 44 18.431 44 12 44 14.409 45 14.442 45 11.267 45 18,022 45 11-733 45 14.089 46 14. 108 46 11.022 46 17.63 46- 11.478 46 13-783 47 13.808 47 10.787 47 17.225 47 11.234 47 13.489 48 13.52 48 10.563 48 16.895 48 II 48 13.208 49 13.244 49 ■■ 10.347 49 16.51 49 10.776 49 12.939 SO 12.98 50 10.14 50 16.22 50 10.56 50 12.68 SI 12.725 51 9.94T 51 15-9 51 10.353 51 12.431 52 12.48 52 9-75 52 15.59 52 10.154 52 12.192 S3 12.24 53 9.566 53 15.30 53 9.962 53 11.962 54 12.02 54 9.389 54 15.01 54 9.778 54 1 1. 741 55 li.S 55 9.218 55 14.74 55 9.6 55 .11.527 56 11-59 56 9.054 56 14.48 56 9.429 56 11.321 57 1:1-37 57 8.895 57 14.22 57 9.263 57 11.123 58 11.29 58 8.741 58 13.98 58 9.103 58 10.931 59 11.00 59 8.593 59 13-74 59 8.95 59 10.746 60 10.81 60 8.45 60 13.51 60 1 8.8 60 10.567 LOOM CALCULATIONS. 97 At Table IX. a pick table is given showing the calcu- lated picks for forty-six different wheels in five styles of gear. As will be imagined from a perusal of the list, the same wheels are not always used for the same pick at different mills, but the following scale gives a medium cloth, and is in use very largely. Poorer or better cloth can be made by using larger or smaller wheels re- spectively : — Table X. Picks to 507 528 649 Quarter. Dividend. Dividend. Dividend. 9 60 62 76 lO 56 58 71 II 50 52 65 12 46 48 59 13 42 44 54 14 39 41 50 15 3^ 38 46 16 33 35 43 17 32 33 40 18 30 31 38 19 28 29 36 20 26 27 34 21 25 26 32 22 24 25 31 23 23 24 29 24 22 23 28 An Up-taking" Motion, used in Scotland, consists of three wheels only (omitting wheels C and D in Fig. 5); the change pinion gearing directly with the beam wheel. Suppose the beam to be 13 inches in circumference, the beam wheel to be 140 teeth, and the rack wheel 120, the dividend for the number of picks j^er inch is got by G 98 WEAVING CALCULATIONS. Rule E. — Multiply the beam wheel and rack wheel to- gether^ and divide by the circumference of the roller in inches. 140x120-^-13 = 1291 dividend. Thus for 43 picks to the inch a 30 wheel would be required, obtained by dividing 129 1 by 43. To many manufacturers it is no doubt preferable to have a dividend which, when divided by the shots on the glass, gives the necessary wheel ; therefore we give Rule F. — Multiply the rack wheel by the beam wheels and divide by the circumference of the up-taking roller ex- pressed in two-hundredths of'^'j inches. The dividend of the former example would be 1 20 x 140, and divided by 70.27, that being 13 inches expressed in 2%- of an inch — 120 X 140 -^ 70.27 = 239. Suppose 17 shots on the glass were required — 239-17=^. Ans. 14 wheel required. Jaequard Calculations. — In designing for Jacquard work many sizes of design paper are used — thus, 8x8, 12x9, 12x10, 10X8, signifying that the first-named number of squares across the paper occupy the same space as the latter number down the paper. These are used so that a pattern may be in proportion on the paper to what it would be in the cloth, although in the latter it might have less picks than ends per inch. For example, a square pattern woven 12 ends to the \ inch and 10 picks to the \ inch, if drawn on I2X 10 design paper, would be as broad as long, if on I2X 12 design paper would appear broader than long. LOOM CALCULATIONS. 99 Apparently then the design paper to be used should be in proportion to the ends and picks per inch. If the cloth has to be i6o ends and i6o picks per inch, then the design paper must be as i6o to i6o. For example, 8x8 would do. If 132 ends and no picks per inch, the paper must be as 132 is to no, e.g., 12 x 10 paper. Casting" Out. — In lay-over patterns a number of ends are tied to one hook, and if the pattern contains as many ends as there are hooks, or some factor of the number, it is easy to calculate how many shall be tied. In a warp of 1600 ends in a 400 machine, and 400 ends in the pattern, four would be tied to each hook. With 100 ends in the pattern there would be 16 ends similar, which, however, would be divided between the four patterns representing the capacity of the machine, still giving four ends to a hook. In some cases, the number of hooks available for use cannot be divided by the number of ends in the pattern without remainder. This remainder can- not be used, and has to be cast out. Rule G. — After allowing for selvages, &c., divide the number of hooks available by the number of ends in the pattern, the remainder after division is the number to be cast out ; the other hooks being all utilised. Example. — How many hooks would be cast out in a 408 machine, with 64 ends in the pattern, 8 hooks being used for selvages. The machine will weave six patterns and have 16 hooks to spare, which would be cast out — 64)400(6 groups 384 16 Ans. 16 hooks cast out. 100 WEAVING CALCULATIONS. One row of 8 would be cast in the middle and another at the end. To find the ends foF each Hook or Neckband. Rule H. — Divide the number of patterns in the width of the fabric by the number of groups of hooks available for them. This gives the number of ends to each hook, any surplus being added to one or more groups of hooks. Example. — Taking 1600 ends in a 400 machine, with 64 ends to the pattern, the 1600 ends, neglecting sel- vages, will give 25 complete patterns of 64 ends each in the width of the cloth ; this will give four ends, otherwise four patterns, to each hook to five sets, and five patterns or five ends to a hook in the sixth set. Casting out for coarser reed. Rule J. — Multiply the number of hooks in use for the finer reed by the coarser reed, and divide by the finer reed. The difference is the number to cast out. Example. — 400 hooks are being used for 100 reed cloth. How many would have to remain at rest in weav- ing 80 reed cloth with the same Jacquard harness ? 400 X 80 -f- 100 = 320 400 - 320 = 80 to cast out. Cumhertaoard. — The total number of holes per inch in the cumberboard' must be equal at least to the number of warp ends per inch in the reed. If the cumberboard is finer than this, subtract the ends per inch in the reed from the ends per inch in the cumberboard, and the number to be left unused in each inch remains. WAGE CALCULATIONS. N the cotton trade wages are now regulated chiefly by lists of prices drawn up and agreed upon by representatives of masters and opera- tives. This is a commendable system, not only because it obviates disputes, by having a standard to refer to in case of differences of opinion, but be- cause each manufacturer and each district are placed on the same basis, and thus unfair competition is avoided. Earlier in the history of the cotton trade each master had his own list, and paid more or less than his competitors, as he was more or less favourably situated, or perhaps in some instances according to the rates to which he had been accustomed from the commencement of the factory system. The growth of trades' unions has compelled the adoption of fixed bases on which all makers must pay, forcing up the lowest prices, while at the same time increased competition has compelled those manufacturers who in times gone by have paid higher rates than their competitors to reduce their payments to the ordinary rates, and thus the standardised scales of payments have been adopted. Almost the only disadvantage in standard lists is that when once fixed neither masters nor men seem inclined to make allowances for abnormal circumstances, such, for I02 WEAVING CALCULATIONS. example, as when an employer is engaged on producing cheap fabrics out of poor material, or where machinery is old or worn out. In these cases the work-people are obviously at a disadvantage. In other circumstances the employer is in the worse position where he has gone to great expense in providing the most modern machinery, or the most healthy workshop, or where he finds employ- ment in a country neighbourhood for people who would otherwise be unemployed, and where he is at greater expense in carriage, cartage, lighting, and other expenses. In these cases the operative reaps the benefit if full rates are paid. The greatest unanimity of prices prevails in the weaving departments, and least in those branches where the fewest men are employed, such as taping or warehousing. In these departments each man has his own value based on his abihty. The rates paid in each department will now be given, and where possible the districts in which each list is accepted will be noted. Winding". Mule Yarn, from Twist Cop to Warper's Bobbin. Counts of Yarn. i8's. 20'S . 22'S . 24'S . 26'S. 28'S. 30'S. 32'S. 34'S. 36'S. Lbs. of Twist for I2d. 65 lbs. 62 „ 57 ,, 52 ., 49 >5 46 „ 44 ,, 42 „ 41 ,, 40 5, Counts of Yarn. 38'S. 40's . 46'S. 50's . 6o's. 70's . 8o's. 90's . loo's . Lbs. of Twist for I2d. 36 lbs. 30 28 24 21 18 16 15 WAGE CALCULATIONS. TO3 Above paid nett, and is an average of rates paid in Lancashire. Ring frame or throstle frame yarn about 25 per cent, more for a shilh'ng. No acknowledged list is paid in all the cotton districts, but the above is about the average. In Burnley, 6Jd. per 20 Jbs. of 32's twist is paid, and 5 per cent, added to the price for each two counts finer, and 5 per cent, deducted for each two counts coarser. Below are the prices for winding allowed by the Preston list of 1 860, and still current at some places in the town : — Average of Prices Paid for Winding for 20 lbs. Throstle. Mule. Throstle. Throstle. d. d. d. d. 26 . . 3f 50 . . 8 85 . .14 28 3i 5l 55 • • 81 90 • . i5i 30 3« 5f 60 . . 9 95 • • 16I 32 3l 6 65 ■ • 9f 100 . . 18 34 6i 70 . . \o\ 105 . . 20I 36 ... 6i 75 • • iij no . . 23 40 7 80 . . 12I 120 . . 30 46 ... 7i Coloured Yarn Winding*. When coloured yarn is used for warps, the yarn is dyed either in the warp or chain as a rule ; but in goods where the amount of colour is small in proportion to the grey yarn (d booties, for example, and also in other special goods), the yarn is dyed in the hank, and has to be wound to the warping bobbin. Rates vary very much for this; is. per bundle is often paid for 20's or 2/40's in I04 WEAVING CALCULATIONS. dhooty work. In other districts this rate gets as low as 8d. per bundle, but the average may be taken as lod. A scale in proportion to this would be : — 12's 16's 20's 24's 28's 32's 36's 40's M. ^d. lod. ii^d. i2,d. i4^d. i6d. iT^d. Pirn Winding". Coloured wefts often require winding from hank to pirn, and this is more costly than winding the same yarn to the warper's bobbin. An average over the county of Lancashire would probably give : — 12's 16's 20's 24's 28's 32's 36's 40's igd. lod. 1 2d. i4d. i6^d. igd. 2i^d. 24^. 2'jd. In each case the prices apply to a 10 lb. bundle. Beaming". (Less 10 _per cent) Pnr\a Price per wrap Fnrlq Price per wrap of 3564 yards. of 3564 yards. 300 3-75^- 410 4.93^. 310 3.85^. , 420 5.04^. 320 3.96^. 440 5.28^. 330 4.0 J d. 460 5.52^. 340 4.1 Sd. 480 5.76^. 350 • . 4.2 gd. 500 6.ood. 360 4.40^. 520 6.2 6d 370 4.5^. 550 6.66d 380 . 4.6d. 580 . 7.05^. 390 4.7 id. 610 7.45^. 400 4.82^. 640 7.85^. No list has been official^ adopted for this work, but the above may be taken as the average rate in North Lancashire. WAGE CALCULATIONS. I05 Ball Warping". Ball warping is paid either by the thousand hanks or by the 100 lbs., except in the case of small or difficult warps, which are made by time. An average rate varies from 6d. to 8d. per lOOO hanks, and an allowance of 2d. per warp for all warps under 500 hanks. In some cases id. is allowed for each double lease, and from 6d. to 8d. per hour paid for making sample warps, or difficult coloured warps. An average list of prices is for grey warps of not less than 800 hanks each : — lo's "jd. per 1000 hanks. or 7^/. per 100 lbs i6's 6|^. 5} 5) lid. 55 24's 61^. 5' 55 ^S¥' 55 32's (>\d. 5? 55 2od. 55 40's 6d. >5 55 24^. 55 Example. — What is the price for warping 1400 ends, 840 yards, 2/60's ? Weight of warp 1400 multiplied by 840 and divided by 840 gives 1400 hanks. At 6Jd. per 1000, the price for the warp is 8.75 pence. Alts. 8fd. Slashing" op Tape-Sizing*. The Blackburn list, framed some twenty-five years ago, is largely used where payment by list still obtains. Many mills now have the slashers or tapers, as they are variously called, paid at a fixed wage. The list is as under : — Taking 2460 ends as a standard, deducting |d. for io6 WEAVING CALCULATIONS. every 50 ends below the standard, on 37^ yards per 100 cuts. Taking 2460 ends as a standard, add Jd. for every 50 ends above the standard, on 37|- yards per 1 00 cuts. Fractional parts of 50 ends given in favour of the workman. 1460 1560 1660 1760 i860 i960 2060 2160 Ends. to to to to to to to to 1510 1610 1710 1810 1910 2010 2IIO 2210 d. d. d. d. d. d. d. d. 25 yds. 14.00 14.5 15.00 15-5 16.00 16.5 17.00 17.5 37h " 21.00 21.75 22.5 23-25 24.00 24.75 25.5 26.25 46 „ 25.76 26.68 27.6 28.52 29.44 .30.36 31.28 32.2 60 ,, 33-6 34-8 36.00 37.2 38.4 39.6 40.8 42.00 100 ,, 56.00 58.00 60.00 62.00 64.00 66.00 68.00 70.00 2260 2360 2460 2560 2660 2760 2860 2960 Ends. to to to to to to to to 2310 2410 2510 2610 2710 2810 2910 3010 d. d. d. d. d. d. d. d. 25 yds. 18.00 18.5 19.00 19.66 20.33 21.00 21.66 22.33 37i .. 27.00 27.75 28.5 29-5 30. 5 31.5 32.5 33.5 46 ., 33-12 34-04 34-96 36.186 37-413 38.64 39.86 41.093 60 ,, 43-2 44-4 45-6 47-2 48.8 50.4 52.00 53-6 100 ,, 72.00 74.00 76.00 78.66 81.33 84.00 86.66 89.33 3060 3160 . 3260 3360 3460 3660 3860 Ends }. to to to to to to to 3110 3210 3310 3410 3510 3710 3910 d. d. d. d. d. d. d. 25 yds. . 23.00 23.66 24-33 25.00 25.66 27.00 28.33 37h » 34-5 35-5 36.5 37.5 38.5 40.5 42.5 46 „ . 42.32 43-546 44-773 46.00 47.226 49.68 52-13 60 ,, . 55-2 56.8 58.4 60.00 61.6 64.8 68.00 100 ,, 92,00 94.66 97-33 100.00 102.66 108.00 113-33 The preceding hst is based upon medium counts of yarn. Extreme counts and extreme sorts to be allowed for as per agreement. The list is paid less 10 per cent. WAGE CALCULATIONS. 107 It is adopted in most manufacturing districts, excepting South Lancashire, where no deduction is made below 2500 ends. Example. — Suppose the taper is engaged on 1970 ends for three days, and runs three sets each of 200 — 75 yards pieces, and for three days more on three sets of 1470 ends. If 25 yards is adopted as the standard length of cut, he will have slashed 200x75-^25=600 cuts in a set — that is, 1800 cuts of 1970 ends, and 1800 cuts of 1470 ends, the rates of payment for which, according to the lists, are i6Jd. per hundred and I4d. per hundred re- spectively. 1800 at i6J^.=;2^i 4 9 „ at 14^. = 110 ^2 5 9 10 per cent, off o 4 6 £^ Looming" with Lease. i6's to 22's 23's to 27's 28's to 55's 56's to 8o's 8o's and upwards 28's to 55's, without lease 2\d, per 1000 threads. 2%d. 2\d. 2%d. 2\d. Three leases to have something allowed as per agree- ment. Double warps for worsted goods to have an allow- ance as per agreement. Jobbing or labouring to be paid extra, at so much per hour. Yarns below i6's to be paid according to quality of yarn and fineness of reed. I08 WEAVING CALCULATIONS. Drawing'-in. Dra wing-in . . ^^d. per looo ends, with lease. „ . . 4^d. ,, „ without lease. The above is the Blackburn and district hst paid less 10 per cent. Other districts have rather higher lists. The prices in the Preston list of i860 were as under : — Looming" op Twisting" for 1000 Ends. With a less d. Without a less d. 28 to 60 inclusive . 2J 28 to 60 inclusive -3I 04 61 „ 80 „ . 2f 6l „ 80 . 3l 81 „ 120 „ . 2|- 81 „ 120 • 3i Drawing-in for 1000 Ends. With a less d. 1 Without a less d. 28 to 120 . . . 3I 28 to 120 . 34 Weaving Wages. The employers of Blackburn, Preston, and Burnley, being the principal weaving districts of Lancashire, and the representatives of the Northern Counties Weavers' Associations adopted and put in force during the past year (1892) a new uniform list of prices for plain weav- ing. Until this list was adopted, the most important lists were the Blackburn list of 1853 and the Burnley list of 1880 for plain cloth, and the Nelson satin list for fancy cloth. The Chorley plain and Preston lists were based on the Blackburn list, and related to a fine class of goods. The Bury, Stockport, and Ashton lists had been gradually superseded by the Blackburn list as regarded plain cloth. An attempt had been made by the operatives to combine WAGE CALCULATIONS. IO9 the Chorley fancy list and the Nelson satin list as a new list, to be called the North and North-East Lancashire fancy list, but it had not been accepted by the employers. These two fancy lists are given here, and have been printed with the uniform hst, but, as just stated, have not been officially adopted by the employers of any district. The lists may be divided into two classes : — (i.) Those regulating wages for weaving plain cloth. (2.) Those regulating wages for weaving fancy cloth. The Blackburn list was in 1883 formally adopted for the former by many districts as the chief regulating factor of Lancashire plain weavers' wages, but of course has now been superseded by the uniform list. This has been most difficult to formulate, having, it might be said, for years engaged the attention of Joshua Rawlinson, Esq., J. P., of Burnley, and Thomas Birtwistle, J. P., of Accrington, the employers' and operatives' secretaries respectively, who called in to their aid other leading repre- sentatives of both sides. Difficult of formulation, it has been still more difficult to establish, opposition having been met with from operatives in all districts where a reduction was involved. It is now estimated to cover 300,000 looms, and with the preparatory processes to regulate a wages bill of ;;^ 100,000 weekly. Since the first edition of this book was published three new lists have been adopted in addition to the uniform list. These are the Oldham velvet list of 1890, the Colne coloured goods list of 1891, and the Radcliflfe coloured goods list of 1892. The latter lists were like the uniform list framed by Mr. Joshua Rawlinson and Mr. Birtwistle on behalf of, and in consultation with, the leading men on both sides. no WEAVING CALCULATIONS. The RadclifFe list is printed here in place of the older list that appeared in the first edition, and the Oldham and Colne lists are inserted as additional representative lists. The Oldham list refers to velvets and heavy goods. In those towns where a uniform style of goods is made of plain and comparatively simple weave, it is possible to adopt and adhere to a standard rate of payment such as is done in Burnley, Blackburn, and other towns. In other districts such as Bolton, Manchester, and Preston, the sorts are so varied and difficult to classify that at many mills a private list is adhered to. The lists here g'iven are:— 1. The Uniform list of weaving prices of 1892. 2. The Blackburn list of 1853. 3. The Chorley plain hst of 1875. 4. The Burnley plain list of 1 880. 5. The Preston list of i860. 6. The Chorley fancy hst of 1886. 7. The Nelson satin list of 1886. 8. The Radcliffe coloured goods list of 1892. 9. The Oldham velvet list of 1 890. 10. The Colne coloured goods list of 1891. I. THE UNIFORM LIST, 1892. (i) The Standard. The standard upon which this list is based is an ordinarily-made loom, 45 inches in the reed space, measured from the fork grate on one side to the back board on the other, weaving cloth as follows : — WAGE CALCULATIONS. Ill Width. — 39, 40, or 41 inches. Reed. — 60 reed, 2 ends in one dent, or 60 ends per inch. Picks. — 15 picks per quarter inch, as ascertained by arithmetical calculation, with \\ per cent, added for contraction. Length. — 100 yards of 36 inches measured on the counter. Any length of lap other than 36 inches to be paid in proportion. Twist. — 28's or any finer numbers. Weft. — 31's to lOO's both inclusive. Price. — 30d., or 2d. per pick. (2) Width of Looms. A 45-inch reed space loom being taken as the standard, \\ per cent, shall be added for each inch up to and including 51 inches; 2 per cent, from 51 to 56 inches; 2j per cent, from 56 to 64 inches; and 3 per cent, from 64 to 72 inches. \\ per cent, shall be deducted for each inch from 45 to 37 inches inclusive ; and i per cent, from 37 to 24 inches, below which no further deduction shall be made. For any fraction of an inch up to the half no addition or deduction shall be made, but if over the half the same shall be paid as if it were a full inch. All addi- tions or deductions under this clause to be added to or taken from the price of the standard loom, 45 inches. 112 WEAVING CALCULATIONS. Deducted from Standard. Added to Standard. Loom. Per- Loom. Per- Loom. Per- Loom. Per- centage, centage. centage. centage. Inches. Inches. Inches. Inches. 24 23 35 12 46 4 60 29 25 22 36 II 47 3 61 34 26 21 37 10 48 4j 62 34 27 20 38 8f 49 6 63 36i 28 19 39 7i 50 72 64 39 29 18 40 6i 51 9 65 42 30 17 4T 5 52 1 1 66 45 31 16 42 3¥ 53 13 67 .48 32 15 43 2* 54 15 68 51 33 14 44 li 55 17 69 54 34 13 45 Standard 56 19 70 57 57 24 71 60 58 24 72 63 59 26I (3) Broader Cloth than Admitted by Rule. All looms shall be allowed to weave to within 4 inches of the reed space, but whenever the difference between the width of cloth and the .reed space is less than 4 inches it shall be paid as if the loom were i inch broader, and if less than 3 inches, as if it were 2 J inches broader. (4) Allowance for Cloth 7 to 15 inches Narrower than the Reed Space. When the cloth is from 7 to 15 inches inclusive nar- rower than the reed space of the loom in which it is being woven, a deduction in accordance with the following tables shall be made. No further deduction shall be made when cloth is more than 15 inches narrower than WAGE CALCULATIONS. 113 the reed space, or when cloth is narrower than 18 inches. Fractions of an inch are not to be recognised under this clause. Allowances for Narrow Cloth. Cloth 72-in. Loom Cloth lit Cloth in. 70-in. Loom Cloth 69-in. Loom Cloth 68-in. Loom Cloth 67-in. Loom in. percent. in. percent. percent. in. percent. in. percent. in. percent. 65 1.38 64 1.41 63 1.43 62 1.46 61 1.49 60 1.52 64 2.76 63 2.81 62 2.87 61 2.92 60 2.98 59 3-04 63 4.14 62 4.22 61 4-3 60 4-38 59 4-47 5« 4-56 62 5-52 61 5.62 60 5-73 59 S.84 5^ 5-96 57 5.83 61 6.9 60 7-03 59 7.17 5^ 7-31 57 7.2 56 7.09 60 8.28 59 8.44 5^ 8.6 57 8.52 56 8.44 55 8.36 59 9.66 5^ 9.84 57 9-79 56 9.74 55 9.69 54 9-63 5« 11.04 57 11.02 56 10.99 55 10.96 54 10.93 53 10.9 57 12.19 56 12.19 55 12.18 54 12.18 53 12.17 52 12.16 Cloth 66-in. Loom Cloth 65-in. Loom Cloth 64-in. Loom Cloth in. 63-in. Loom Cloth 62-in. Loom Cloth 61-in. Loom in. percent. in. percent. in. percent. percent. in. percent. in. percent. 59 1-55 5^ 1.58 57 1-35 5& 1-37 55 1.4 54 1-43 5« 3-1 57 2.91 56 2.7 55 2.75 : 54 2.8 53 2.85 57 4.4 56 4-23 55 4-05 54 4.12 53 4.2 52 4.28 56 5-69 55 5-55 54 5-4 53 5.49 ! 52 5-6 51 5-7 55 6.98 54 6.87 53 6.74 52 6.87 ' 51 7- 50 7-13 54 8.28 53 8.19 52 8.09 51 8.24 50 8.4 49 8.27 53 9.57 52 9.51 51 9.44 50 9.62 49 9-51 48 9.41 52 10.86 51 10.83 50 10.79 49 10.71 48 10.63 47 IO-55 51 12.16 50 12.15 49 11.87 48 11.81 47 11.75 46 11.69 Cloth 60-in. Loom Cloth 59-in. Loom Cloth in. 58-in. Loom Cloth 57-in. Loom Cloth 56-in. Loom Cloth 55-in. Loom in. percent. in. percent. percent. in. percent. in. percent. in. ipercent. 53 1.45 52 1.48 51 I-5I 50 1.54 49 1.26 48 1.28 52 2.91 51 2.96 50 3.02 49 2.78 48 2.52 47 2.56 51 4-36 50 445 49 4-23 48 4.01 47 3.7^ 46 .3.^5 50 5.8[ 49 5-63 48 5.44 47 5.25 46 5.04 45 5-13 49 6.98 48 6.82 47 6.65 46 6.48 45 6.3 44 6.09 48 8.14 47 8. 46 7.86 45 7.72 44 7.25 43 7-05 47 9-3 46 9.19 45 9.07 44 8.64 43 8.19 42 8.01 4b 10.47 45 10.38 44 9.98 43 9-57 42 9.14 41 8.97 45 11.63 44 11.26 43 10.89 42 10.49 41 10.08 40 9.94 H 114 WEAVING CALCULATIONS. Allowances for Narrow Cloth- -continiied. Cloth 54-in. Loom Cloth 53-in. Loom Cloth 52-in. Loom Cloth 51-in. Loom Cloth 50-in. Loom Cloth 49-in, Loom in. percent. in. percent. in. percent. in. percent. in. percent. 1 in. percent. 47 1.3 46 1-33 45 1-35 44 1.03 43 1.05 42 1.06 46 2.61 45 2.65 44 2.36 43 2.06 42 2.09 41 2.12 4S 391 44 3-^5 43 3-38 42 3-1 41 3-14 40 3- 18 44 4.89 43 4-65 42 4-39 41 4-13 40 4.19 39 4-25 4S ^.87 42 5-64 41 5-41 40 5. 16 39 5-23 38 5-13 42 6M 41 6.64 40 6.42 39 6.19 38 6.1 37 6.01 41 7.83 40 7-63 39 7-43 38 7.05 37 6.98 3^ 6.9 40 8.8 39 8.63 38 8.28 37 7.91 36 7.85 35 7.78 39 978 38 9.42 37 9.12 36 8.77 35 8.72 34 8.67 Cloth 48-in. Loom Cloth 47-in. Loom Cloth 46-in. Loom Cloth 45-in. Loom Cloth 44-in. Loom Cloth 43-in. Loom in. percent. in. percent in. percent. in. percent. in. percent. in. percent. 41 1.08 40 1.09 39 I. II 38 .94 37 •95 3(^ .96 40 2.IS 39 2.18 , 38 2.03 37 1.87 3& 1.9 35 1.92 ^9 3-23 38 3.09 37 2.96 36 2.81 35 2.85 34 2.88 38 4-13 37 4. 3^ 3.88 35 3-75 34 3.80 33 z-n 37 5.02 36 4.91 35 4.8 34 4.69 33 4-75 32 4.81 36 5-92 35 .5-83 ' 34 5-73 33 5.62 32 5-70 31 5-77 3S 6.82 34 6.74 33 6.65 32 6.56 31 6.65 30 6.54 34 7.72 33 7-65 32 7.57 31 7-5 30 7.41 29 7.31 33 8.61 32 8.56 31 8.5 30 8.25 29 8.16 28 8.08 ^, ,, 42-in. Cl^th Loom Cloth 41-in. Loom Cloth 4b-in. Loom Cloth 39-in. Loom 1 Cloth 38-in. Loom Cloth 37-in. Loom in. percent. in. percent. in. per cent. in. percent. in. percent. in. percent. 3S .97 34 •99 33 I. 32 I.OI 31 1.03 30 •83 34 1.95 33 1.97 32 2. 31 2.03 30 1.85 29 1.67 33 2.92 32 2.96 31 3- 30 2.84 29 2.67 28 2-5 I 32 3-9 31 3-95 30 3.8 29 3-(^5 28 3-49 27 3-33 31 4.87 30 4-74 29 4.6 28 4.46 27 4-32 26 4.17 30 S.6S 29 5-52 28 5^4 27 5-27 26 5-14 25 5- 2q 6.43 28 6.32 27 6.2 25 6.08 25 5-96 24 5-83 28 7.21 27 7.11 26 7- 25 6.89 24 6.78 23 6.67 27 7.99 26 7.89 25 7.8 24 7-7 23 7.60 22 7.5 WAGE CALCULATIONS. 115 Allowances for Narrow C-lotii— continued. Cloth 36-in. Loom Cloth 35-in. Loom Cloth 34-in. Loom Cloth 33-in. Loom Cloth 32-in. Loom Cloth 31-in. 1 Loom in. 29 28 27 26 25 24 23 22 21 percent. .84 1.69 2-53 3-37 4.21 5.06 5-9 6.74 7.58 in. 28 27 26 25 24 23 22 21 20 percent. .85 1.7 2.56 341 4.26 5-II 5-97 6.82 7.67 in. 27 26 25 24 23 22 2[ 20 19 percent. .86 1.72 2-59 345 4-3' 5-17 6.03 6.9 1-1^ in. 26 25 24 23 22 21 20 19 18 percent. 1.74 2.62 349 4.36 5.23 6.1 6.98 7.85 in. 25 24 23 22 21 20 19 18 percent. .88 1.76 2.65 3-53 4.41 5-29 6.18 7.06 in. 24 23 22 21 20 19 18 percent. .89 1.79 2.68 3-57 4.46 5.36 6.25 Cloth 30-in. Loom Cloth 29-in. Loom Cloth 28-in. Loom Cloth in. 20 19 18 27-in. Loom Cloth 26-in. Loom Cloth 25-in. Loom in. 23 2.2 21 20 19 18 percent.: .9 I.81 2.71 3.61 4-52 542 in. 22 21 20 19 18 percent. .91 1.83 2.74 3-66 4-57 in. 21 20 19 18 percent. •93 1.85 2.78 3.7 percent. •94 1.87 2.81 in. 19 18 percent. •95 1.9 in. 18 percent. .96 (5) Reeds. A 60 reed being taken as the standard, f per cent, shall be deducted for every two ends or counts of reed from 60 to 50, but no deduction shall be made below 50. | per cent, shall be added for every two ends or counts of reed from 60 to 68 ] i per cent, from 68 to 1 00; \\ per cent, from 100 to no; and 2 per cent, from no to 132. All additions or deductions under this clause to be added to or taken from the price of the standard, 60 reed. ii6 WEAVING CALCULATIONS. Deducted from Standard. Added to Standard. Count of Per- Count of Per- Count of Per- Reed. centage. Reed. centage. Reed. centage. 50 si 62 3 98 18 52 3 64 4 100 19 54 2i 66 2i 102 20I 56 ij 68 3 104 22 58 f 70 4 106 23i 60 Standard. 72 5 108 25 74 6 no 26J _ 76 7 112 28I 78 8 114 30J 80 9 116 32i- 82 10 118 34J 84 II 120 s^i 86 12 122 sH 88 13 124 4oi 90 14 126 42J 92 15 128 44i 94 16 130 46i 96 17 132 48J (6) Picks. Low. — An addition of i per cent, shall be made for each pick or fraction of a pick below 1 1, thus : — Below II down to and including 10, i per cent. JJ ^O 53 ?> 9' 2 5) J) 9 " " ' 3 " 55 " ij j5 7? 4 j> and so on, adding I per cent, for each pick or fraction thereof. High. — An addition of i per cent, per pick shall be made whenever they exceed the following, if using WAGE CALCULATIONS. 117 Weft below 26's when picks exceed 16 jj 26's to 39's inclusive ,, 18 „ 40's and above ,, 20 In making additions for high picks any fraction of a pick less than the half shall not have any allowance ; exactly the half shall have J- per cent, added ; any fraction over the half shall have the full i per cent, added. (7) Twist. The standard being 28's, or finer, the following addi- tions shall be made when coarser twist is woven in the following reeds : — Below 28's to 2o's in 64 to 67 reed inclusive, i per cent. 68 to 71 ,, „ 2 72 to 75 „ „ 3 Below 2o's to 14's in 56 to 59 „ ,, i 60 to 63 ,, ,, 2 64 to 67 „ „ 3 and so on at the same rate. When twist is woven in coarser reeds no addition shall be made. (8) Weft. Ordinary Pin Cops. — The standard being 31's to lOO's both inclusive, shall be reckoned equal. Above lOO's I per cent, shall be added for every 10 hanks or fraction thereof. In lower numbers than 31's the following additions shall be made : — For 3o's5 29's, 28's, 27's, 26's, 25's, 24's, 23's, 22's, 2l's, 20'S, 19's, i8's, 17's, i6's, 15's, 14's, add I per cent. » 2 n 3 „ 6^ 101 16 Il8 . WEAVING CALCULATIONS. Large Cops. — When weft of the following counts is spun into large cops so that there are not more than 19 in one pound, the following additions shall be made in place of the allowance provided for pin cops in preceding table : — For 29's, 28's, add i per cent. „ 27's, 26's, „ 2 „ 25's, 24's, 23's, „ 3 5, 22'S, 2l's, 20'S, ,, 4J „ 19's, i8's, „ 6 ,, 17's, i6's, „ 8 ,, 15's, 14's, ,, 10 (9) Four-Staved Twills. Low Picks. — In four-staved twills an addition of i per cent, for each pick or fraction thereof below the picks mentioned in the following table shall be made when using weft as follows : — Below 26's, the addition shall begin at 13 26's to 39's, inclusive ,, ,, 14 40's and above ,, ,, 15 High Picks. — When using weft Below 26's, the addition for high picks shall begin at 21 26's to 39's inclusive ,, „ ,, 22 40's and above ,, ,, „ 23 In making additions for high picks, any fraction of a pick less than the half shall not have any allowance; exactly the half shall have \ per cent, added ; any fraction over the half shall have the full I per cent, added. (ro) Splits. The following additions shall be made for splits : — One split, uncut, add 5 per cent. Two splits, „ „ yi ,, Empty dents only shall not be considered splits. WAGE CALCULATIONS. II9 (it) Additions and Deductions. All the foregoing additions and deductions shall be made separately. This list is subject to a reduction of lO per cent. This list shall come into force after the first making-up day in August for cloths requiring a fresh calculation, and on the first making-up day in November next for all cloths. The foregoing list has been framed at Conferences of Representatives. Signed on behalf of the Employers, Joshua Rawlinson, Secretary of the North and North- East Lancashire Cotton Spinners and Manufacturers' Association. Signed on behalf of the Operatives, Thomas Birtwistle, Secretary for the Northern Counties' Amalgamated Associations of Weavers. June 24, 1892. Additions upon Plain Cloth Prices for the following Classes have not been altered. Dopia Stripes. — Two and a half per cent, extra for doria stripes in addition to the number of ends. Spiral Gold Headings. — id. extra for spiral gold head- ings requiring 50 picks at each side, nothing for any less number of picks. 120 WEAVING CALCULATIONS. Grey Dhooties. — Seven or nine gall headings, cloth woven full width of loom, 40 inches and over, to be Jd. for 12, Jd. for 14 headings, and id. for 16 to 20 marks of 40 yards. Nothing extra for headings if narrow cloth in broad looms. Plain Dhooties. — There are two systems of paying for dhooties, but in the ultimate result there is very little difference. The first that was adopted was as follows : — 10 yard dhooties 10 per cent, above list. 9 » II 8 „ 12 7 „ 13 6 „ 14 5 n 15 The second is 10 per cent, upon all lengths without any deduction being made for width of cloth. Dobby Dhooties. — Sixteen flush ends or under, with Calcutta heading, 20 per cent. Sixteen ends and under, with Madras heading, to be paid 30 per cent, on list. . All other dobby borders to be paid 30 per cent., with prices for headings as per illustrated coloured list, agreed upon March 15, 1886. Dhooty Heading's— Extras for 40ss Yards. — Madras heading to be paid ^d. for 12, Jd. for 14 marks, if woven in looms over 39 inches wide, and id. for 16 to 20 marks, and ijd. for 21 to 30, in whatever loom woven. Large sarrie heading, with I shuttle 15 bars, to be paid id. extra. Small sarrie heading, with i shuttle 9 bars, to be paid Jd. extra. WAGE CALCULATIONS. 121 Madras sarrie heading, with 2 shuttles 1 1 bars, includ- ing cord, to be paid Jd. extra. Bombay chocolate heading, with 2 shuttle 14 bars, to be paid id. extra for 16 marks. Madras chocolate heading, with 4 shuttles 18 bars, including cord, to be paid id. per cut extra. Red Madras heading, with 2 shuttles 10 bars, including cord, to be paid ^d. for 12 headings, and Jd. for 14 if woven in looms over 39 inches wide, and id. for 16 to 20 marks, and ijd. for 21 to 30 in any loom. What is known as 9-bar Bombay heading, with i shuttle II bars, to be id. extra for 16 marks. Bombay chocolate heading, with 3 shuttles 14 bars, to be paid id. extra for 16 marks. Ordinary Calcutta heading, with 5 bars, no extras. Examples. — Find the weaving price under the uniform list for cloth : 39 inches wide, 40 yards of 36 inches, 58 reed, 39 wheel, 507 gear, 32's twist, 32's weft, woven in 45 inch reed space loom. Standard for 45 in. reed space 100 yds,, 2d. per pick. Multiplied by 40 yds. and divided by 100, equals Sod. Multiplied by the picks 13. (507 divided by 39 wheel gives 13 picks) . . . 10.40 Width of loom, standard. Reed, f per cent, less than standard. f per cent, on 10.40 is .078 . . . .078 10.322 Picks, no allowance. Yarns, no allowance. The price is therefore io.322d., unless paid below the list — e.g. J at present the uniform list is paid less 10 122 WEAVING CALCULATIONS. per cent. lO per cent, on 10.322 is 1.032; deduct this from the Hst price and it leaves 9.29. Ans. 9.2 9d. Example No. 2. — What is the weaving price for 52J inch cloth woven in a so-called 55 inch loom, 33 reed, 5 J pick, 40's twist, 6o's weft, 80 yards of 36 inches ? Standard for 100 yards, 2.00 per pick. Multiply by 80 yards and divide by 100 . 1.60 Multiply 1.60 by si picks .... 8.80 Taking the additions and deductions in the order given in the list, 55 inch loom has 17 per cent, added to 45 inch, the standard ; but in this case, as the cloth is within 3 inches of the reed space, it must be taken as if it were a 57 J inch loom. The J inch has not to be reckoned. The list allows 21 J per cent, for a 57 inch loom; 21 J cent, on 8.80 is 1.892. 8.80 Add 1.892 10.692 Reed : no deduction be.low 50. 3f per cent, below the standard equalling .4009 ...... .400Q 10.2911 Picks : I per cent, per pick or fraction of a pick below 11 to be allowed ; in this case 6 per cent. . . . .6174 10.9085 standard. If paid less 10 per cent., 1.098 would be deducted, leaving 9.8i7d. Ans. 9.81 yd. WAGE CALCULATIONS. 1 23 Example No. 3. — Find the weaving price for 40 inch cloth, 108 yards long, 36I- inches to the yard, 80 reed^ 24 pick, 4o's/6o's, woven in 50 inch reed space loom. Standard, 2d. per pick. The cloth in yards of 36 inches is ioqJ yards long. 109J multiplied by 2d. and divided by 100 gives . . . . . . . 2.19 Multiplied by 24 picks gives . . . 52.56 Loom width : the loom is 50 inch reed space, and therefore requires 7J per cent. over standard, equaUing . . . 3.922 56.502 Narrow cloth : as the cloth is more than 7 inches narrower than the reed space, a deduction of 4.19 per cent, is allowed, equal to 2.3674 ..... 2.3674 54-2346 Reed : the reed is above standard, and has 9 per cent, added . . . . .4.8721 59.0067 Picks : cloth of 24 picks has 4 per cent. added ....... 2.3692 61.3369 If 10 per cent, be deducted, equalling 6.i;^66, it leaves 55.2003 as the price. Ans. 4s. 7.2003d. If the foregoing examples be carefully studied, and each allowance checked by the standard list to ascertain the reason why it is made, the student will soon be able to set himself similar problems, and exercise himself in the calculations by working them out without referring to a copy of the list, afterwards checking them by the list. 124 WEAVING CALCULATIONS. 2. THE BLACKBURN LIST, 1853. (i) The Standard. — The standard upon which this list is based is a 40-inch loom, weaving from 36 to 41 inch cloth, 60 reed Stockport counts, 16 picks per J inch, 374" ya-rds of 37 inches, from 30's to 6o's weft, and from 28's to 45's twist for I2.25d. (2) Reeds. — A 60 reed or 30 dents, being the standard, is made the starting-point, and } per cent, is deducted for every two ends or counts of reeds, from 60 to 48-; but no deduction is made below 48 reed, and f per cent, is added for every two ends or counts of reed above 60. (3) Weft. — All weft from 30's to 6o's, both included, is considered medium, and reckoned equal, but all weft above 6o's to be allowed i per cent, for every ten hanks, and all below 30's to 26's to be allowed 2 per cent, on list. „ 26's to 2o's „ 5 „ J, 2o's to i6's ,, 8 „ ,, i6's to 14's ,, 10 „ (4) Twist. — All twist from 28's to 45 's, both in- cluded, is considered medium, and reckoned equal, but all twist above 45 's up to 6o's to be allowed i J per cent., and all above 6o's I per cent, for each ten hanks, and all below 28's to 20's to be allowed i per cent, on list. 5, 2o's to 14's ,5 2 „ (5) Additions for Picks. — All picks above 8 and up to 18 are considered proportionate, but 8 picks, and all below and all above 18, to have i per cent, allowed for WAGE CALCULATIONS. I 25 every pick over and above the proportionate difference in the number of picks. (6) Width of Looms.— A 40-inch loom, being the standard, is taken as the starting-point, and all additions or deductions are made therefrom. (The reed space is measured from back board to forkgrate.) 26 in. loom has 2J per cent, deducted from 30 in. loom. 3*-* 55 5 J5 55 35 15 35 5> 5 jj )j 40 ?> 4.0-inch loom {4.^-inck reed space) the standard — 45 in. loom has 5 per cent, added to 40 in. loom. 50 5, 10 „ „ 45 „ 55 5, 10 „ „ 50 „ 60 „ 10 „ „ 55 (7) Looms of Intermediate Widths.— One per cent, per inch to be deducted from 40 down to 30-inch loom ; below 30 to 26-inch loom f per cent, per inch to be deducted. Above 40-inch up to 45 -inch loom i per cent, per inch to be added, and all above 45 -inch 2 per cent, per inch. (8) Narrow Cloth in Broad Looms.— Suppose a 40- inch loom should be weaving cloth ^^^6 to 31! inches in width, take off one-half the difference between 40 and 35-inch loom price; and if weaving cloth 31 to 2J\ inches wide, take off one-half the difference between 40 and 30-inch loom price; or if weaving 41 J to 46-inch cloth in a 50-inch loom, take off one-half the difference between 50 and 45-inch loom, and so on with all other widths. 126 WEAVING CALCULATIONS. (9) Range of Cloths. 26 in. loom allowed to weave cloth up to 27 in. 27 J3 J> 30 }) 5) 35 5> >J 40 ;5 5) 45 J3 35 50 33 33 55 60 53 33 35 33 from 27 to 28 in. 27 55 31 31 33 36 36 55 41 41 55 46 46 55 52 52 53 57 57 35 62 (10) Basis of Caleulations. — The calculations in the Blackburn list are based upon the picks counted by the glass when the cloth is laid upon the counter. Forty yards short stick to be taken as 39 yards long stick. (11) Adding" or Deducting" Percentages.— In making calculations the allowances must be added or deducted separately in the order they are here placed, viz., reeds, materials, picks, and widths. (12) Splits. — Splits to be allowed -^^d. per piece (double width) for 29 yards, or Jd. per piece (double width) for 46 yards. (13) Figured Shirtings. — Figured shirtings are paid 10 per cent, above plain cloth. (14) Twills. — Plain 4-staved twills are paid same price as plain cloth. Other kinds by special arrangement. (15) Plain Dhooties. — There are two systems of pay- ing for plain dhooties, but in the ultimate result there is very little difference. The first that was adopted was as follows : — WAGE CALCULATIONS. 12/ lo yard dhooties lo per cent, above list. 9 » ,, II 8 „ ,, T2 7 „ 13 6 „ 14 5 ,^ 15 The second is lO per cent, upon all lengths without any deduction being made for width of cloth. (16) Dobbie Dhooties. — On February 18, 1874, it was agreed that f fluss bordered Dobbie Dhooties should be paid 30 per cent, on hst without any deduction for width of cloth or additions for number of headings, the wider borders and more exceptional goods to be paid extra. (17) Dividend. — The dividend of the loom is formed by adding I J per cent, to the mathematical dividend for the contraction of the cloth between the loom and the counter. (18) This list was paid in Blackburn, Darwen, Accring- ton, Great Harwood, Bury, HasHngden, Stalybridge, Moss- ley, Chorley (part), Ashton (part), Preston (part), and most weaving districts, less 10 per cent., until autumn 1892. Example. — To find price for a 44 inch cloth in 45 inch loom = 66's reed, 44 change pinion, 528 dividend, 75 yards long, 34's/36's — 12.25 standard. Add 2 J per cent, reed .27 12.52 Add 5 per cent. loom .62 I3-T4 Calculate in proportion to ) _ ^^ pick 16 to 12 . . ( ~ ^' Calculate proportion length I t • 37i to 75, double. .|-i9 72 = l.stpr.ce. Deduct 10 per cent. = 1.97 17.75 =pi'esent price. 128 WEAVING CALCULATIONS. Or from list under heading, 45 inch loom — 66 reedj 37^ yards = .822 for i pick 9.86 for 12 picks 19.72 for 75 yards, less 10 per cent. = 17.75- 3. CHORLEY PLAIN LIST, 1875. The Chorley Standard List of Prices for Weaving Cambrics, Shirtings, and Tanjibs. (i) Standard. — 45 inch reed space loom, 60 reed, Stockport counts, 37|- yards long stick, 15 picks per J inch, at ii.25d., is taken as a standard, free from any allowances for materials. (2) Reeds. — A 60 reed is made the starting-point, and f per cent, is deducted for every 2 ends or counts of reed below a 60 to a 48, but no deduction for reeds below 48. One per cent, is added for every 2 ends above a 60 to an 84 reed, and ij per cent, for every 2 ends from 84 to 88, and 2 per cent, for every two ends above an 88 to 94, and 2| per cent, for every two. ends or counts of reed above 94. All odd or bastard reeds to be paid as the next finer counts — that is to say, a 77 reed to be paid as yS, and 99 as 100 reed, and so on with all other counts. (3) One End in a Dent, — One end in a dent to be paid half way between the actual fineness of the reed and the number of ends — that is to say, a 96 reed would have 48 ends to the inch ; therefore it would be taken as 72 reed, half way between 48 and 96. (4) Three or more Ends in one Dent. — Three or more ends in one dent to be paid according to the number WAGE CALCULATIONS. 1 29 of ends per inch — that is to say, a 60 reed with three ends in one dent to be paid for as a 90 reed. (5) Wet Weft. — For wet weft, id. to be added for a piece of 25 yards. (6) For Width of Looms. 31 inch loom has 4 per cent, deducted from 35 35 » 55 5 5, „ 40 40 J3 5) 5 n » 45 45 inch Reed Space Loom is the Standard. 50 inch loom has 5 per cent, added to 45 55 » 55 TO )3 55 50 60 „ „ 10 „ „ 55 65 ,1 ^. 15 55 35 60 (7) Measurement of Looms. ^The loom in all cases to be measured from the backboard on the one side to the fork-grate on the other side, and allowed to weave cloth within 4 inches of the width of the reed space. (8) Looms of Intermediate Widths. — One per cent, per inch below 45 to 31 inch to be deducted, but no deduction to be made for looms below 31 ; and i per cent, per inch to be added from 45 to 50 inches, and 2 per cent, per inch from 50 to 60 inches, and 3 per cent, per inch for all above. (9) Percentage for Picks. — All picks above 9, and up to 1 8, are considered proportionate ; but 9 picks and all below, and all above 18, to have i per cent, added for every pick over and above the proportion. All under the half not to be paid for, but all above the half to be paid for as full picks ; if exactly the half pick, J per cent, only to be paid above the proportionate part. I I30 WEAVING CALCULATIONS. (lo) Range of Cloth. 31 inch reed space loom, to weave cloth up to 27 inch. 32 33 5 53 34 5 J5 35 36 ) 55 37 38 ) 5> 3 33 39 3 55 40 3 53 41 3 33 42 5 53 43 3 3) 44 3 -3 45 46 J 55 5 J3 47 48 5 55 3 35 49 3 3' 50 3 35 from 27 28 55 33 27 29 55 53 27 30 55 33 27 31 51 27 32 53 28 33 33 29 34 53 30 35 35 31 36 35 32 37 33 33 38 33 34 39 35 35 40 55 36 41 55 37 42 5J 38 43 55 39 44 55 40 45 55 35 41 46 35 (11) Narrower Cloth than Table admits. — Suppose a 50 inch loom should be weaving cloth from 36^ to 41 inches in width, then t^ke off one-half the difference between 50 and 45 inch looms; and if weaving from 31^ to 36 inch cloth, take off one-half the difference between 50 and 40 inch looms; or if weaving 33i to 38 inch cloth in 47 inch loom, take off half the difference between 42 and 47 inch looms, and so on with any other width. (12) Broader Cloth than Table admits. — Any broader cloth than table admits to be paid half the difference between that and the next broader range of looms — thus, 42 inch cloth woven in a 45 inch loom to be paid half the difference between 45 and 50 inch looms ; WAGE CALCULATIONS. 131 and if 34 inch cloth be woven in 37 inch looms, to be paid half the difference between 37 and 42 inch loom price, and so on with all other widths. (13) Twills. — Four-stave plain twills to be paid same price as plain cloth. (14) Adding* or Deducting* Percentages. — In making the above calculations, the allowances for reeds, picks, width of loom, widths of cloth, and wet weft, are taken and added or deducted, separately, in the order they are here placed, viz., first, reeds; second, picks; third, width of loom; fourth, width of cloth; and fifth, wet weft. (15) Calculations to Ibe made from Decimal Pick.— In making out prices from this list the decimal pick as produced by dividing the dividend by the change wheel is to be taken instead of the net pick ; the dividend to be formed by adding ij per cent, to the wheel calculation for contraction of the cloth between the loom and the counter. (16) Rising and Falling of Prices below 77 Reed.— This list of prices, up to and including ^6 reed, is con- sidered 2j per cent, below the Blackburn standard list, and when the list is paid net at Blackburn, this list shall be paid in Chorley with 2\ per cent, added, and any rise or fall at Blackburn shall be immediately followed by the same advance or reduction at Chorley, up to and including the "jG reed. (17) Rising" and Falling" of Prices above 76 Reed.— This list of prices, above y6 reed, shall be considered equal to the Preston standard list, and when the list is paid net at Preston, this list shall be paid net in Chorley, 132 WEAVING CALCULATIONS. and when any advance or reduction is paid upon the Hst at Preston, the same advance or reduction shall be paid on this list at Chorley, above j6 reed. The above list is now largely merged into the Uniform List. 4. THE BURNLEY PLAIN LIST, 1880. For Weaving Printers, Shirtings, Madapallams, Jacconet, Mulls, and Tanjibs. (i) Standard. — Two shillings and sixpence is taken as the standard for 39 inch cloth, 60 reed, Stockport counts (or 60 ends per inch), lOO yards long stick, 15 picks per J inch, woven in a loom of 43 inches reed space, measured from backboard to fork-grate. 19I- yards long stick to be taken as 20 yards short stick. (2) Reed. — A 60 reed being the standard, f per cent, shall be deducted for every two ends or counts of reed, from 60 to 52, but no deduction shall be made below 52. f per cent, shall be added for every two ends from 60 to 6^^^ and above 6'^^ i per cetit. for every two ends. (3) Counts of Yarn. Weft. From 30's to 6o's inclusive shall be reckoned equal. ,, 30's „ 26's 2 per cent, shall be added to standard. ,, 20 S ,, 20 35?) }J 3> „ 2o's „ i6's 8 „ „ „ „ i6's „ 14's 10 „ „ „ Weft above 6o's shall have i per cent, added for every 10 hanks. WAGE CALCULATIONS. 1 33 Twist. From 28's to 45's inclusive shall be reckoned equal. ,, 45's ,, 6o's ij per cent, shall be added to standard. ,, 2o S „ 20 SI jj ,, J, 5, 20 S 5, 14 S 2 ff }, J, Twist above 6o's shall have i per cent, added for every 10 hanks. (4) Picks. — Picks between and including 13 and 20 are considered proportionate, but each pick below 13 and above 20 shall have i per cent, added for each pick below 1 3 or above 20 respectively. Picks shall be paid for as ascertained by calculations given in Clause 1 1 ; but with reference to the additional percentage, if under the half pick, nothing extra shall be paid ; if above the half, 1 per cent, shall be paid as if it were a full pick ; but if exactly the half pick, J per cent, shall be paid. For example, 21.49 pi^^ shall have I per cent, added; 21.51, 2 per cent, added; but if exactly 21.5, I J per cent, shall be added. (5) Width of Looms. — A 43 inch reed space loom being taken as the standard, ij per cent, per inch shall be deducted from 43 to 36 inch reed space, and I per cent, per inch from 36 down to 30, but no deduction shall be made below 30 inch, ij per cent, per inch shall be added from 43 to 45 inch reed space, and 2 per cent, per inch above. (6) Narrow Cloth in Broad Looms.— All looms shall be allowed to weave cloth within 4 inches^oL-Xhe breadth of the reed space, measured from backboard to fork-grate. When the cloth is 6 inches narrower than the reed space, f per cent, shall be deducted, and so on at the rate of T34 WEAVING CALCULATIONS. f per cent, per inch until the width of cloth be 15 inches below the breadth of reed space, when no further deduc- tion shall be made. (7) Broad Cloth in Narrow Looms.— When the dif- ference between the cloth and the reed space is less than 4 inches, for the first inch or fraction of an inch, the same shall be paid as if the loom were I inch broader, and if within three inches of the reed space, as if the loom were 2 inches broader. (8) Throstle Twist.— In reeds above 68 a deduction of 2^ per cent, shall be allowed for throstle twist. (9) Twills. — Four-stave twills shall be paid same as plain cloth except in allowances for picks, when all picks 15 and up to 24 shall be considered proportionate, but each pick below 15 and above 24 shall have i per cent, added below or above the proportion. (10) Heading's. — This list shall only apply to printers, shirtings, madapallams, jacconets, mulls, and tanjibs ; but when more than 9 picks of gold for a single piece, or any other heading out of the usual course for the above classes of goods shall be ■ put in, an extra price shall be paid as per special arrangement, but in no case less than J-d. per piece. (11) Dividend. — The actual dividend for calculation shall be formed by adding i J per cent, for contraction of the cloth between the loom and the counter to the divi- dend produced by the beam and wheel calculation. (12) General. — (a) The width and length of cloth shall be deemed to be the width and length at which it is bought and sold. (d) In making calculations from this list the additions WAGE CALCULATIONS. 1 35 or deductions for reeds, counts, picks, width of loom, width of cloth, and throstle twist shall be made separatel}^, in the order here given. (c) This list shall come into force on the second pay day in March 1880, and if either employers or operatives desire to make any change in the various clauses, they shall give to the other party three months' notice of such desire. (d) The existing rate of wages being 15 per cent, less than the list, the three months' notice shall not apply to any rise or fall in the rate of wages, but merely to a desired change in the details or conditions of the list. Example. — Find price for 39 inch, 68 reed, 75 yards, 17 picks per ^ inch, 5o's/7o's, 43 inch loom. Standard for 100 yards . . . . 30.00 Proportion for 75 ,, . . .22.5 Add for reed 3 per cent. . . . . .67 23-17 Proportion 15 to 17 picks . . . 26.26 Add for counts of twist i J per cent, and ) ^ weft I per cent. = 2^ per cent. . J ^ 26.91 This, less 10 per cent., the current discount off list, was the price payable in Burnley and district until autumn 1892, when it was merged into the Uniform List to a great extent. It is still paid, less 10 per cent., in some outside districts. 5. PRESTON PLAIN AND FANCY LIST, i860. Fop Shirting's, Cambrics, and Tanjibs. — (i) 45 inches reed space loom, 60 reed Stockport counts, 37^ yards 136 WEAVING CALCULATIONS. long stick, 37 inches to the yard, 60 picks per inch at lid. per piece, is taken as a standard. (2) Reeds. — ij per cent, is deducted for every 4 ends below a 60 to a 48. All reeds below to be paid the same as a 48. ij- per cent, is added for every 4 ends above a 60 to a 76 ; 3 per cent, for every 4 ends above a 76 to a 90 ; 5 per cent, for every 4 ends above a 90 to 100 ; and 4 per cent, for every 4 ends above 100. (3) Picks. — All picks from 9 to 18 per J inch inclusive are reckoned in equal ratio. One per cent, is added for each pick below 9 and above 18, up to the extent of list, and i^ per cent, per pick to be added for all above the list in 66 to 86 reeds inclusive. (4) Materials. — All yarns below 28's to be allowed 2 per cent, for every 5 hanks, and any other deviation from list counts to have 2^ per cent, added for every 5 hanks. Twills. — To be paid the same as plain cloth. For wet weft id. to be added for a piece of 25 yards. For Jaeeonets and Mulls. — (i) 46 inches reed space loom, 60 reed Stockport counts, 20 yards short stick, 36 inches to the yard, 60 picks per inch, at 6d. per piece, is taken as a standard. (2) Reeds. — i J per cent, is deducted for every 4 ends below a 60 to a 48. All reeds below to be paid the same as a 48. ij per cent, is added for every 4 ends above a 60 to a 68, 4 per cent, for every 4 ends above a 68 to no, and 6 per cent, for every 4 ends above no. (3) Picks. — All picks from 9 to 18 per J inch inclusive are reckoned in equal ratio, and i per cent, is added for each pick below 9 and above 18. WAGE CALCULATIONS. 1 37 (4) Materials. — 1| per cent, to be added for every 10 hanks the yarns are finer than Hst counts up to 80 reed, but no allowance on jacconet yarns above 80 reeds. For wet weft |-d. to be added for a 20 yards piece. For Fancy Goods. — (i) Hair Cords to be paid 40 per cent, over jacconet prices. (2) Satin stripes with Spots to be paid by the annexed list without receiving any advance with plain cloth. (3) Spots and Unfig'ured Satins woven in spot looms to be paid lO per cent, more than plain cloth. (4) Brocades woven with a double lift machine to be paid 40 per cent, more than plain cloth. (5) Brocades woven with a single lift machine, with a satin ground, to be paid 30 per cent, more than plain cloth. (6) Brocades woven with a single lift machine, with a plain ground, to be paid 50 per cent, more than plain cloth. (7) Cloth woven with 3 ends in a dent to be reckoned half way between the actual fineness of the reed and what it would be if 2 ends only were in a dent. No allowance to be made for yarns on fancy cloth. General Conditions.— Narrow Cloth woven in a broad loom to be paid half the difference between the price of broad and narrow cloth, and any cloth broader than table admits to be paid half the difference between that and the next broader loom. Looms of Intermediate Widths.— One per cent, per inch to be deducted on looms below 45 inches, 2 per 138 WEAVING CALCULATIONS. cent, per inch from 45 to 60 inches, and i J per cent, per inch for all above. The annexed tables are based upon the count of picks and breadth of cloth when laid upon the counter, and in fixing the rate of wages to be paid for weaving any sort of cloth, the picks to be calculated by the wheels as shown on the table. Atherton's GeaP. — Beam wheel, 80; stud wheel, 120; rack wheel, 60 ; pinion wheel, 1 5 ; emery beam, 1 5 inches ; dividend, 640. Atherton's Gear. — Beam wheel, 80; stud wheel, 146; rack wheel, 60 ; pinion wheel, 14 ; emery beam, 1 5 inches ; dividend, 8343^%%. Atherton's Gear. — Beam wheel, 100; stud wheel, 146; rack wheel, 60; pinion wheel, 14; emery beam, 15 inches; dividend, i042x^V Dickinson's Gear. — Beam wheel, 75 ; stud wheel, 120; rack wheel, 50; pinion wheel, 15 ; emery beam, 15 inches; dividend, 500. Dickinson's Gear. — Beam wheel, 75 ; stud wheel, 120; rack wheel, 80 ; pinion wheel, 1 5 ; emery beam, 1 5 inches ; dividend, 800. Harrison's Gear. — Beam wheel, 75 ; stud wheel, 100; rack wheel, 50; pinion wheel, 12; emery beam, 15 inches; dividend, 520|-. 32 inch reed space loom to have 12^ per cent, deducted from standard. 36 inch reed space loom to have 10 per cent, deducted from standard. 41 inch reed space loom to have 5 per cent, deducted from standard. WAGE CALCULATIONS. 1 39 46 inch reed space standard to weave from 36J to 41 inch cloth. 5 1 inch reed space loom to have 5 per cent, added to standard. 56 inch reed space loom to have 1 5 per cent, added to standard. 61 inch reed space loom to have 25 per cent, added to standard. 66 inch reed space loom to have 35 per cent, added to standard. 72 inch reed space loom to have 45 per cent, added to standard. The Reed Space in all cases to be measured from backboard to backboard, and the loom allowed to weave cloth within 5 inches of the breadth of the reed space. For the Preston prices for winding, looming, drawing, &c., see earlier pages. 6. CHORLEY FANCY LIST, 1886. ( TAis list to apply to grey goods only.) Double Lift Jacquards.— To be paid the following over and above plain cloth prices : — For plain grounds, 30 per cent. „ satin „ 25 „ When single lift machines are used, the scale shall be 10 per cent, higher than the above. Brocades, damasks, and stripes created by a variation of the number of ends, 3, 4, or more in a dent, to be paid for by the number of ends per inch. Picks 18 to 30, I per cent, per pick, from 30 to 40, f per cent., all above 40 J per cent, instead of i per cent. 140 WEAVING CALCULATIONS. Lace brocades 5 per cent, extra. Leno Cloths and Velvets. — Not to be included in this list; but paid extra as per arrangement. The above applies to jacquards only. Dobby and Tappet Motions, Sateens Excepted.— To be paid the following on plain cloth prices : — All up to and including — 4 staves 12 per cent. 5 ^3 6 14 7 15 8 16 9 17 10 18 II 19 12 20 13 staves 21 per cent. 14 , , 22 15 , , 23 16 , , 24 17 , , 25 18 , , 26 19 . . 27 20 , , 28 Stripes and other cloths, with more than 2 ends in a dent, to be paid for by the number of ends per inch. Exceptions. — Plain handkerchiefs, 72 reeds and below, to be paid 5 per cent, extra. Single shuttle cord checks, with more than two picks in one shed, to be paid 2^ per cent. less. In single shuttle checks, handkerchiefs, and all other special classes of goods in which more than one pick is put in one shed, all lost picks shall be counted. Lace stripes, fly overs, or any other goods of a special character shall be paid extra as per arrangement, to be agreed upon by the employers' and operatives' associa- tions. Sateens, Drillettes, and Drills.— When reed and pick per J inch added together do not make more than 40, 5 per cent, shall be added to plain cloth prices. WAGE CALCULATIONS. 141 When reed and pick per ^ inch do not exceed 50, 2 J per cent, shall be added ; above 50, plain cloth prices, excepting when the number of ends per J inch in the reed exceeds the pick, then f per cent, additional shal] be added for every two points of the reed above the pick. In case of any special cloth, either dobby or jacquards, being required for which this list is not adapted, the price shall be arranged by the employers' and operatives' associations. 7. NELSON SATIN LIST, 1886. ■ Agreement for Sateens, Drills, and Drillettes. Cloths up to and including 25 picks to be paid 8 per cent, on plain cloth prices, and for every additional pick or fraction beyond the half, an extra J per cent, shall be added. These additions to be made in place of the allow- ances for picks in the various lists. Whenever the reed per J inch exceeds the pick, } per cent, shall be added for every additional two counts of reed above the number of picks. When cloth is woven with three or more ends in a dent, the allowance for every two ends or counts of reed above 68 shall only be f per cent, same as from 60 to 6S. Lenos. — For one doup 70 per cent. ; two doups, 80 per cent, on plain cloth, prices. 8. THE RADCLIFFE AND DISTRICT LIST FOR COLOURED GOODS. (i) Standard. Cloth. — The list shall be based on cloth, 36 inches to the yard, and 100 yards long. 142 WEAVING CALCULATIONS. Reed. — 56 reed, i.e., 28 dents to the inch and two ends in a dent. Width. — 2J to 30 inches measured on the counter in an unfinished state as it comes from the loom. Weft. — 2o's or any finer counts. Shuttles. — ^Two. Looms. — Drop box. Warps. — Full (or hand) dressed or sectional warps. Price per Pick, per \ inch. — 3.4d. or 3d. and two-fifths, as ascertained by wheel calculation with ij per cent, added for contraction. Extras and Deductions. (2) Reeds. Standard. — 56 reed, i.e., 28 dents to the inch, and 2 ends in a dent. Additions. — Above 28 to 35 dents, add 1 per cent, for each extra dent above 28, and above 35 dents add i\ per cent, for each extra dent. Deductions. — Below 28 dents down to and including 25 dents, deduct i per cent.- per dent, and below 25 to 20, f per cent, for each dent, beyond which no further de- duction shall be made. (3) Width of Cloth. Standard. — 27 to 30 inches. Additions. — Above 30 inches up to and including "^fi inches, add i per cent, per inch ; above 36 inches to 40 inches, add i\ per cent, per inch; above 40 inches to 48 inches, 2 J per cent, per inch ; and above 48 inches, 3 per cent, per inch. WAGE CALCULATIONS. 143 Deductions. — For each inch below 27, deduct | per cent, per inch down to 24 inches, beyond which no further deductions shall be made. (4) Weft. No addition or deduction to be made for weft finer than 2o's, but for cent. 19's ii's add II per i8's > add I per cent. id's ;j 14 17's 9's 5 ' 18 i6's > add 2 per cent. 8's 7's 5' 51 22 26 , 14's 5? 4 JJ 6's 5? 30 13's 55 6 „ 5's ^J 35 12's 5) 8 ,, 4's 31 40 J5 3> 3J 3J •5 33 (5) Linen Weft. No addition or deduction to be made for 3 5's linen weft or any finer counts. But for 34's to 30's linen add 2 per cent. 33 33 29's to 25's „ „ 4 „ „ ,, ,, 24's to 2o's „ ,, 8 J, ,, 19's and i8's „ ,, 10 ., „ 17's and 1 6's ,, ,,12 (6) Coarse Twist in a Fine Reed. Below 1 6's in a 68 or finer reed (2 threads in a dent), 2 per cent, per count to be added. 14's two-fold yarn, that is, 2/28S, to be paid as i6's, and so on in proportion. (7) Undressed Warps. Ordinary half-beer warps, dyed, sized or bleached in the warp, to be paid extra as follows : — 144 WEAVING CALCULATIONS. All one colour .035 per yd. Two colours, white or grey counted .045 » Three „ „ „ •055 » Four „ „ „ •075 „ increasing .02 per yard for each additional colour, sel- vages not reckoned a colour. Warps wound on so as to avoid crossing or splitting of half-beers in weaving, to be paid .035 per yard. (8) Half Dressed Warps. All warps run through a reed, but neither dressed nor brushed by hand, and when broken threads are not found and pieced in the usual way, shall be considered half dressed warps, and paid as follows : — All one colour .02 per yd. Two colours, white or grey counted •03 jj Three „ „ „ .04 „ Four „ „ „ .05 » (9) Round Mill Warps. All warps made on a round mill, irrespective of colours, shall be paid 5 per cent, extra. (10) Shuttles. For each shuttle above two, 2 J per cent, shall be added, i.e., for 3 shuttles 2 1 per cent. 4 shuttles . . . . . 5 „ ,, 5 shuttles 7i » » 6 shuttles . . . . . 10 ,, „ WAGE CALCULATIONS. I45 (11) One Shuttle Work. Cloth woven in a one shuttled loom running not less than 170 picks per minute shall be 25 per cent, less than two-shuttle price, and if slower than 170 picks shall be 1 2 J per cent, less in place of 25 per cent. (12) One Shuttle Work in Check Looms. One shuttle work woven in check looms shall be paid 1 2 J per cent, less than two shuttle price. (13) Shaft Work. Extra payment shall be made for shaft work, such payment to cover and include pick finding, at the follow- ing rate : — 3, 4, 5, 6 hfts or treads add 5 per cent. 7j 8, g ,, ,, ,, 72 '5 10 II, 12, 13, 14 15, 16, 17, 18 increasing ij per cent, for each additional hft or tread. (14) Two Beams. All cloth woven with two beams shall be paid not less than 7J per cent, extra. (15) Splits. Cloths woven 2 or more in a breadth with selvages worked by a catch end shall be paid 3 per cent, extra for I spht, and 5 per cent, for 2 spHts. If empty dents only are used, no extra charge shall be made. K ;5 J5 3) xy^ 33 5) J> 35 14 33 5; 5J 35 18 35 146 WEAVING CALCULATIONS. (16) Three or more Threads in one Dent. When the number of lifts used are equal to the number of threads in a dent, the reed to be paid for shall be found as follows : — For 3 threads in one dent add 25 per cent. 33 5 3' 3 3 33/5 3 3 ,3 6 ,, „ ,, 100 ,, to the actual reed used, Stockport counts, 2 ends in i dent. Example. — A reed 20 dents per inch, 3 ends in each dent, shall be paid for as 25. 20 reed, 4 in a dent as 30 20 ,, 5 ,, ,, 35 reed, and so on. When the number of lifts used are not equal to the number of threads in each dent, the reed to be paid for shall be found as follows : — For 3 ends in one dent add 37J per cent. 35 4 33 33 33 75 '5 35 5 33 3,3 33 11^2 33 = , 6 „ „ „ 150 to the actual reed used, Stockport counts, 2 ends in one dent. Example. — A reed 20 dents per inch, 3 ends in each dent, as a 27 J ; the same reed with 4 in a dent as 35 33 - 53 5 33 3) 422 ,, ,, 6 ,, ,, 50 reed, and so on. Provided always that in no case shall a lower reed than 26 be paid for. WAGE CALCULATIONS. 1 47 (17) One Thread in a Dent. One thread in a dent shall be paid for as if the reed were half way between the actual number of threads per inch, and what it would be if there were 2 threads in a dent. Example. — What is known as an 80 reed, 40 dents per inch, I thread in a dent, would be paid for as 60 reed, 30 dents per inch, 2 ends in each dent. (18) More than one Thread in a Heald. (a.) Two threads shall be counted as one if in same heald. (b.) Three or more threads in a heald and one heald to a dent, nothing extra shall be paid. {a.) All cloths with either 3, 4, 5, or 6 threads in a heald, and 2 healds to a dent, an addition of 7J per cent, shall be paid. (19) Circular Box Looms. When circular box looms are used a deduction of lO per cent, shall be made from the standard, and clause 10 shall not apply. (20) Additions and Deductions. In calculating the list all the above additions and de- ductions shall be made separately. (21) General. (a.) Should any dispute arise as to the interpretation of any of the conditions or clauses, or as to the price to 148 WEAVING CALCULATIONS. be paid for weaving any exceptional goods, a meeting of the two committees (employers and employed), shall be held with a view to an amicable settlement thereof before any strike takes place. (b.) This list shall come into force for all new sorts put in the looms after the first making-up day in May 1892, and for all classes of cloth on the first making-up day in July 1892. {c.) If either employers or operatives desire to make any change in the various clauses, they shall give to the other party three months' notice of such desire. The foregoing list has been framed by a joint committee consisting of representatives of employers and operatives, and was finally adopted at a meeting held at Manchester on Friday the 29th day of April 1892, after having been approved by a general meeting of the members of the Radcliffe and District Manufacturers' Association, and approved by the operative weavers by means of a ballot. Signed on behalf of the Employers, Joshua Rawlinson, Secretary. Signed on behalf of the Operative Weavers, Thomas Birtwistle. WAGE CALCULATIONS. 149 50 54 55 59 60 64 65 69 70 74 75 79 80 84 85 ,. 89 9. THE OLDHAM VELVET LIST. A List applying to the Weaving of Velvets, Cords, and SUCH Heavy Goods, put in operation October i, 1890. Basis.— 45 and 49 looms weaving 56's weft, yd. per lb. 6i|d. 6iJd. 6Ad. 6id. 6|d. 6Jd. 6id. 6d. Whenever the looms are narrower than the above table, x^^d. per lb. shall be added for each range of 5 inches, and if broader Jd. per lb. shall be deducted for each similar range. Measurement of Looms. — The loom in all cases to be measured from lathe sword to lathe sword, except looms that have a fork attached ; in such case they shall be measured from lathe sword to fork -grate. Lost Pick. — Whenever the yarn in the reed in a loom 64 inches or narrower stands more than 2 inches less than the width of the loom, -^6. per lb. for each inch, or fraction thereof, shall be added, and in looms above 64 inches, whenever the yarn stands more than 3 inches below the width of the loom, the same allowance per inch shall be made, but no deductions shall be made for over- widths. Allowances for Weft. — 56's weft is taken as the 150 WEAVING CALCULATIONS. Standard, and Jd. per lb. shall be added or deducted for each hank as the weft is finer or coarser. Extras. — Ribbed edges Jd. per lb. extra. Cloth with over 24 picks to the round Jd. per lb. extra. E 3 patents, ^d. per lb. extra. X and XX superfine twill backs up to and including 88 reed, ^d. per lb. extra ; above 88 reed and up to and including 96 reed, ^d. per lb. extra; and for each addi- tional 6 ends per inch or counts of reeds, -Jd. per lb. extra. Velvet cords -Y^d. per lb. extra. Stripes f d. per lb. extra. Checks ^d. per lb. extra. General. — This list for velvets was agreed on between the Oldham velvet manufacturers and the weavers' representatives, at a meeting held May 3, 1888, when it was also agreed : — " That the basis with allowances for weft only should come into operation on the first pay-day in June 1888. The conditions for lost pick and all other extras being suspended for the present. The time for them to come into operation to be considered at a future meeting." Samuel Andrew, Employers^ Secretary. Abraham Buckley, , operatives' Secretary. May 17, i\ This list is now paid net with the above exceptions. January i, 1890. WAGE CALCULATIONS. 151 H > > < o H C/2 U I— I Ph <1 o O ^ o U vO vO vO vO ^ 11 ^00 OnOO coCO hh i-h ONt>-f^l^^'^ CO 00 r^ t^ r^ o \0 \0 vO O CO !>. i>- r^ CO H-l t^ CO vO r^ \0 ^ vO , l-l l-H l-H Hl(M , , 1 r--> i_n CO >-i r-^ t^ !>. i>]cc cch!H in|co h!oi t^ vO ^ mD ^ vO vO vO -^ -yO hH r^ r^ t~^ i>N CO Mb* '-"to Hls^ cdco rHl^ _ K_ vO vO vO vO vO ir^ r^ JN. vO ^O . C0|-* "7 MlCO V ■^ l-^ 0\ !>. CO vO vO MD CO 1-1 '.■ '-'I'^l 1^^ ^1^ '"'to VO '-0 \0 vO mD \0 v£) vO _.'-! '-' ^00 iV. Mk« 7 7 7 '-^^* -^'^ "^to "HH r^ \o VO vD \0 vO ^1-* 7 t-to vO O \0 vO vO H<^< 7 7 7 vO i-o CO M \0 O \0 t-;x cohji >o[» Hlci \£) u-i 1-n '-'"I l-O vO vO \0 CO "^to I '-iH< vO vO ij-> c^ Mhfi '•'ito --ilM <^'f-o '-'H* „ _ 1_0 l-O >-0 U~l l-O \0 vO vO i-o i-n ^ vO w-i i-o 1^ vO vO — vO vO VO H-, 7 ^0. ^V^ coF* 7 7 " -J^ ^^ ^ ';^ "# vO i^vO 1-1 iJ-iot-^"^'^^^^^ ^ ir-> in u^ '-'^ " vO ^ vO -1 vO vO vO . Hk< 7 Hoo hI. h|o^ 7 7 7 ^ ^^ '";g^ "^S '::^ vO "^ U-l l-Tl l-O -• ON '^ ON ;i .5 c^ CO CO "^ C p ^ - ^ 0\ '^ O^ ir^ ir^ vO MD -i:!- On "^ O t^ r-^ CO CO CO CO -^ i>iij-ivono r^r-^cooo O ON CO O o Ph 152 WEAVING CALCULATIONS. lo. THE COLNE AND DISTRICT LIST FOR COLOURED GOODS. (r) The Standard. The standard upon which the price for plain and striped goods is based is as follows : — Cloth. — 28, 29, or 30 inches in width. Reed. — 52 to 64 both inclusive, or 26 to 32 dents per inch, 2 ends in a dent. Length. — 74 yards of warp, 36 inches to the yard. Weft. — l6's or any finer counts. Price. — ijd. per pick. The standard upon which the price for checks is based is 70 yards of warp, 2d. per pick ; in all other particulars the same as the standard for plain and striped goods. (2) Reeds. Reeds. — 52 to 64 inclusive, or 26 to 32 dents per inch, 2 ends in a dent, being taken as the standard. Add. — Above 64 to 70, 2 per cent., above 70 an addi- tional I per cent, for each extra dent or 2 ends per inch. Deduct. — Below 52 down to and including 46, 2 per cent., and below 46, 3 per cent., beyond which no further deduction shall be made. (3) Cloth, The standard, being 28, 29, or 30 inches is reckoned equal. For each inch below 28, f per cent, is to be deducted down to 20 inches, beyond which no further reduction shall be made. WAGE CALCULATIONS. 1 53 Above 30 inches up to and including 36, i per cent, per inch is to be added. Above 36 to 40, ij per cent., and above 40, 2J per cent, per inch. (4) Undressed Warps. Ordinary half-beer warps, dyed, sized, or bleached in the warp, to be paid extra as follows : — one colour ..... .035 per yd. Two colours, white or grey counted •045 » Three „ .055 5' Four „ „ „ •075 » increasing .02 per yard for each additional colour, sel- vages not reckoned a colour. Warps wound on so as to avoid crossing or splitting of half-beers in weaving, to be paid .035 per yard. (5) Half Dressed Warps. All warps run through a reed, but neither dressed nor brushed by hand, and when broken threads are not found and pieced in the usual way, shall be considered half dressed warps, and paid as follows : — All one colour ..... .02 per yd. Two colours, white or grey counted .03 ,, Three „ „ „ .04 „ Four „ „ „ .05 „ (6) Coarse Twist in a Fine Reed. Below i6's in a 68 or finer reed (2 threads in a dent), 2 per cent, per count to be added. 14's twofold yarn, that is, 2/28S. to be paid as i6's, and so on in proportion. 154 WEAVING CALCULATIONS. (7) Weft. No addition or deduction to be made for weft finer than 15's. 15's add 2 per cent. 14's „ 4 „ 13's ,, 6 „ 12's ,, 8 ii's add II per cent, lo's „ 14 „ 9's „ 18 „ 8's ,,22 Hank Weft. — Hank weft woven into plain or striped goods from tubes or bobbins shall be paid 5 per cent, extra. (8) Shaft Work with Dobbies. No extra payment shall be made for cloths woven with 6 or any less number of lifts or treads that can be worked with tappets although dobbies are used. All cloths woven with dobbies that cannot be worked with tappets to be paid extra as follows : — Up to and including 10 lifts or treads add 10 per cent. II to 14 lifts or treads inclusive ,, 14 „ 15 to 18 ;, „ „ „ 18 „ increasing \\ per cent, fpr each additional lift or tread. (9) Pick Finding in Looms Without Dobbies. Whenever the employer requires the weaver, in cloth with 3 or more lifts or treads, to turn the loom backward or forward in order to find the shed in which the weft broke, he shall pay an advance of 10 per cent. (10) Additions and Deductions. All the above additions and deductions shall be made separately. WAGE CALCULATIONS. 155 (11) General. This list shall come into force after the first making-up day in September next for new classes of cloth, and for all classes of cloth to which it applies on the first making- up day in November. If any dispute should arise as to the interpretation of any of the previous conditions or clauses, or as to the price to be paid for weaving any goods, a meeting of the two committees (employers and employed) shall be held with a view to an amicable settlement thereof before any strike takes place. The foregoing list was unanimously adopted at a joint meeting of committees representing employers and opera- tives, held at Colne on Thursday the 26th day of June 1890, and finally settled between the two secretaries at a conference held on July 16, 1890. Signed on behalf of the Employers, Joshua Rawlinson, Secretary of the Colne <5r= District Coloured Goods Manufacturers^ Association. Signed on behalf of the Operative Weavers, T. BiRTWISTLE, Secretary of the North- East Lancashire Weavers^ Association. 156 WEAVING CALCULATIONS. ADDENDA. (12) Three or More Threads in One Dent. When the number of lifts used are equal to the number of threads in a dent, the reed to be paid for shall be found as follows : — For 3 threads in one dent add 25 per cent. }5 4 J) 5J J) 5^ J> ?j 5 '> J) '> 75 'J » 6 „ ,, ,, 100 „ to the actual reed used, Stockport counts, 2 ends in one dent. Example. — A 40 reed, or 20 dents per inch, 3 in each dent, shall be paid for as 50. 40 reed, 4 in a dent as 60 40 „ 5 ,, „ 70 reed, and so on. When the number of lifts used are not equal to the number of threads in each dent, the reed to be paid for shall be found as follows : — For 3 ends in one dent add 37!- per cent. 5? 4 jj 55 ii 75 5' jj 5 J3 5} 55 ^^^2 " 6 „ „ ,. 150 „ J3 to the actual reed used, Stockport counts, 2 ends in one dent. Example. — A 40 reed (20 dents per inch) 3 ends in each dent, as a 55 : — the same reed with 4 in a dent as 70 >5 J> 5 5' JJ "5 5, „ 6 „ „ 100 reed, and so on. WAGE CALCULATIONS. I 57 Provided always that in no case shall a lower reed than 52 be paid for. (13) One Thread in a Dent. One thread in a dent shall be paid for as if the reed were half way between the actual number of threads per inch, and what it would be if there were 2 threads in a dent. Example. — What is known as a 80 reed, 40 dents per inch, I thread in a dent, would be paid for as 60 reed. (14) Mexicans. Mexicans shall be paid by this list without any addition or deduction. The foregoing addenda has been agreed to between the committees representing the employers and operatives, and the wording finally settled at a conference held on the 15 th day of September 1891. Signed on behalf of the Employers, Joshua Rawlinson. Signed on behalf of the Operative Weavers, T. Birtwistle. 158 WEAVING CALCULATIONS. <UrS 00 >-H cOvO ON i-H Tt- r^ OnvO CO r^'st-iivO^t^M ^vO O i-t ^co CO i-OHH tv.coo^o MOO o M '^i-or^o^'-i '^MD c^. t"o r^ i-H MD 2 o CO i-o r^co O M CO u^vO ON "-I CO lo r^ On cO'O on M CO CO On '^ <; CO O O O O'-ii-i'-ii-ii-ii-iC^MC-^MMCOCOCO'^'^i-O >-OMD MMMMMMMMMMMMMMMMMCIMC^MCNIN OjCO l>.CO 1-H 04 CO -vt- u-ivO i-i\Oi-i\Oi-<vOOO cO>-nM ONvO -^ > ^ ONLOMCO ^OnO MCO O ^ CO -^vO t\ 0^ M ^"O CO t^ i-h 2 o 1- CO u-ivo GO o i-i co-^t\0\>--i coLor^o -^r^Ovo *-> so m ,Q -^ OOOOOi-i>-<i-<MMHHM(sqMMrococO-^^i-n lOMD ClMMMMMMMMMMMC^MMMMMMMMClC^ (0^ r^MD \jDvD u-ii-Ovo^'^f-^ONM i-OCO M On OnoO M ^^ > ^ OnO moo -^OnO r<ICO OnO M CO '^nO CO ON t-i CO r-v. o covo O o O i-i CO ^nO 00 Onhh m ^t^Ovi-i CO LOOD M lOOO CO ON '^ ON ^ ii ^^ MMMM^^MMMM^^M^^MMMM^^^lMM^^c^^^ <u ;!*■ \0 'nJ-M i-i ONt-^i^ocOi-H M CO"^! !■ LOMD M OO i-O i-h oo lo M On > ^ i-i1-^COOn-^0^ moo OnO !-< M CO '=:f vO t-^ On — rOvO On m O o CO ON >-i M "^vO t-^ONO M i-or^ONH-i cOvO ON M vO >-< MD i-i tv. X2 ii ONONOOOOOO'-'i-i^-ii-ii-iMMMC^coco-^'^LriLo i-i-hMMMMMMMMMMMMMMMMMMMMM (V) t^" vD M ONioM ONi-oMOO t^^O u-i ^ M >-* -^ t^ >-i ^nD 00 M > »> O o vO t^ ON O M "^ i-o t^GO O M i-OJ>,ONi-H -"^r^O coOn^On^ rO -^ Q "^a i_iMMCNIMMMMMMMMMMMMMMMMMMM (D O i_n i-o "^ vO i-H \0 M OnvO co OnnO vOnO I>>I>>^i-h t^^rf- a > "^ CO On ^ lO i-H vO M r^OO OO ONO O 1-1 M co^i-Ot^ONQ M O o ^ i-o t\ On O M CO i-OvO CO O M i-O t^ On M i-OOO i-h nO '-i t\ M W :2 ° O^ONONONOOOOOO'-i'-H'-'i-it-iMMMCOCO'sf^u-i ^ ►-_ii-ii-hMMMMMMMMMMMMMMMMMMM 'S ^T tHCOO) <M -tH CO 00 CO eo 00 I-H tH CO I-H lO Oi CO Oi CO CO t3^.>; 100ini-HCD>— ICOrHC^b-I>-t-OOQ00005C50:)OOi— l(MCO Td o a oc<ieoiocoooc5«-ic<iTHcocX)oc^"^c^ocot>>cqt^c>ac>- Stan 52 t (inck i-Hi-Hi^rHi-HrHi^Cq<NC<lC<ICNCqC<)C<rcrq<NC<J<NOClC<lG<IC<l CO M i-i OnOO 1> ^ lo ■^ M 1-1 ONOO IN,i-ocOi-H ONi-OM Oni-O r^M t^MvO i-HvO i-inOnOnOO T-ou-^i-ni-oi-oi-O'^'^-^coco ,2 o vO CO On 1-1 CI '^ti-Ot^OO O M -^-O OO COvO On M t^ M I~-x M (U *-" OOCOOOONO^O^ONONO^OOOOOl-|l-|'-'l-lMMCOCO'^ ^K-iHii-ii-iMi-iMi-iC^MMMMMMMMMMMMM ^ M lN.i-nM l>^i-OMONi-OMONi-OMt^MI^MCOi-o OO CX>COI^Mt^MNOi-'NOi-OiJ-M-r,'r)-T:J-T:j-cOCOMMi-iO OO rSvO (U -"^ W H-ii_,KHMi-Hi-(i-(i-HMMC^MMMCN«Nfac^C^MMC^M <*s m O <L) CO .Sfi ^ :^::;:;::;;:pd>j :;;;-;:r:^r:ip:^ -„;::;;: •S3 "- ON O i-i M CO ^ u-^vO !>. M M M CO "^ lOvO r-^OO On O i-" N CO ■<:*• MMMMMC^MM ^COCOCOCOCOCOCOCOCO'^'^''^'^^ OO WAGE CALCULATIONS. T59 ft as CO P W W < oo (V 00 IN > o > o Tj O in ^ o o , o . covO On rj Lnoo -H "^^ r>s t^co OOO O^OnoO'^OMDroON tN o i-H '^vo oo M CO LOCO i-H -^ r^ i-< "^co CO tN n o t\ >-o n CO oo On C> ON (> O O O O i-i i-i 1-1 n n Cl CO CO -^ Li-> uno tN c4 N C^ ci C^' N CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO owo CO i^-^^-iONvocNi-H^r^ cot^i-ivo t^-t-MON vo ON M "~i r^ o CO u^co cooNONON O'-^'-i^Mr^coGN-t- -::fvO On *-> CO^O CO O M looO hh '^CO i-h u-i Q ^ OnnO ^ '-i On CO CO CO OnC>C>C>0 O O O i-i >- >-< C\ (S CO CO CO -^ u-wO NO ci c^' M CN N d N CO CO CO CO CO CO CO CO CO CO CO CO co co co co i-i~i u-i u-i ir^ CI i-n l>„ ci Ln r^ M '^no CO M CO >-o r^ COCOOOOC OnOnOnON M o5 pj (nJ c^ ci m' m i-O l-O l-O ir-i cOnO On ri u-iCO n tN ^ \0 co « co nO _OOOl-;|-|-lClcNIcoco-N^l-o lovo CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO 1-H r^ r-v COnO oo i-i '^ l-H COLOtN M-^vOON»-ii-i On 1-1 conO CO O C^ ^ r^ O j:nco COCOCO OnOnOnOnQ c-i d d ci ri c5 ri c^ ri 0N\0 CO IN CO ON 'xf conO On i-h O O O ON Tl-co coco M NO O »-o C0\0 ON M -^ ON COCO ri O tN i-o M O O O i-*^ ^ >- oi n en -^ ^ i-ono CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO "^ -^ vovo nO ir^CO On CO tN i-H NO "^nO In On lo m r\ co nOcoOc^^nOCOOcicn|i-hi-hO ONcOfNi-iNOON conO O nOCO i-i cOi-nt^ONM 'N^^>,0 cOnO On i-h \0 O lo OnnO -^ ■-' On tN i>-oo oocooqooc>c>ONO O O O >-' i-i ci cs n co'^lolo C^ N CNJ C^ CI cnJ ci ri M ci COCOCOCOCOCOCOCOCOCOCOCOCO ':t CO '- On tNvO "^ CO -^nO Cn On <-> OnnO co On tN\0 -^ ON M CO 1-nvO cOOCl'^corii-iO OnmnOO '^vO On m lo cOnO CO O M ''d-tNONi-i -xt-rNO conO CO CO fN M nO CO O oo i-o J^ r^ tNCO COCOCOCO OnOnOnO O O O ^ ^ CS O co^^i-o c4 d C^ N C^ (S fJ c5 C^ (S CJ cocococococococococococo b-rHCD "* 05 CO t- rH t- CO 05 rjl lOt^OO 1-H (M -^ lO t^ lO ■<* CQ tH OOOC<|lOt>-Oit— ICOlOOOi— t^t>» vxii.— I— IU.J u— -^r— luu Cp t- t^ I>- t^ b- 00 00 00 00 Oi 05 Oi . p p rH rH C<1 C<J CO "^ -^ COri<C0rH rj< 05 CO t^ 00 I— I •^ D« irH (M TjllO 03 D>- tH lO t^ tH r-l 00 (N) CO '^ i-onO tNCO ON CO \0 "=t M OO M "xf-NO vO nO nO nO cO'-'^itNONi-icO'-otN M i-nco i-H 'vf-NO >-i LoONCOO iN-^i-i NO NO NO NO IN l>x tN tNCO COCOCO OnOnOnO O O i-i cni m cO'^ ci n* N ci n ci ci ci ci ci ci ci ci ci ci co co co co co co co co i-i ON In. u^ CO ►-! OnnO '^ 1-1 OnnO CO In CO On ^ cOnO On i-t u-> i-nvO InCO On On O 1-1 OnnO '^ M In On Q CI -^ CO M m hh O C^ ^vO OO O CI i-o In On CJ i-OCO >h cor^ClvD O IN'^i-'OO nOnOvOnOnO irNr^tNtN iNCO COCO OnOnOnQ O i-< ^ CI coco ci ci ci ci ci ci ci ci ci o5 ci ci fi ci ci ci co co co co co co co CJ O CO ;cy On O 1-1 M CO -^ lonO In O i-i M CO ^ u^nO InOO On O i-i C^ co ■^ MMnOC^MOC^ .^COCOCOCOCOCOCOCOCO'^^'^t--^'^ 00 M HEALD AND REED CALCULATIONS. EFORE being fully prepared to enter into the calculations regarding the weight of cloth, it is necessary to familiarise ourselves with some method of counting the ends of warp in the cloth. On the Manchester exchange the system adopted both for ends and picks is their number per quarter-inch ; e.g., a i6 by 14 means 16 ends per J-inch, or 14 picks per quarter. The methods used in the manufactory are based on the counts of reed. Formerly many systems of reed counts prevailed, each town or district having a method peculiar to itself; thus, Blackburn counts, Preston counts, and many others were at one time adhered to in their respective districts, but have now fallen into disuse, and almost been forgotten. The Stockport counts are commonest in Lancashire, and based on the number of dents or splits of the reed in 2 inches, and as cloth is generally wrought two ends in a dent, this system is often taken as the number of ends in i inch. It is in use in almost every Lancashire manufacturing district, being adopted in consequence of its simplicity and suitability for calculation purposes. The Bolton counts are still used in some mills in that town, and also in Bury and some few other districts. The system is based on the number of beers in 24J inches — a 160 HEALD AND REED CALCULATIONS. l6l beer comprising 20 dents. A Stockport 40's reed would have 485 dents on 24J inches, or 24J beers Bolton. A Bolton 24J reed is then equal to a Stockport 40's. The Scotch systems are to take the number of dents or splits in the old Scotch ell, 37 inches, and in this system the splits per ell are expressed in hundreds ; thus, 17°° indicates 1700 splits on 37 inches, almost equal to a 92 reed, Stockport ; or, to take the number of porters on the same length. The Scotch porter is equal to the Lancashire beer — 20 splits ; thus, a 60 porter reed would equal 60 X 20 = 1200 splits or dents on 37 inches. A third method used in Scotland is the inch scale, which is the number of splits in i inch, and corresponding to the old Radcliffe and Pilkington method in Lancashire. In the United States the inch scale is generally adopted. In Scotland, as in Lancashire, the old complicated systems show a tendency to give way in favour of the simpler systems of counting the dents on i inch or on 2 inches, i.e., the inch scale, or the Manchester and Stockport systems respectively. It will be greatly to the convenience of the textile trades when the British members of them adopt uniform methods of counting reeds, picks, yarns, &c.; and it seems probable that the Stockport system, once confined to a small district, will ultimately be the system of reed counting. The obsolete systems of reed counting are : — The Blackburn system, in which the counts referred to the number of beers of 20 dents each on 45 inches. The English ell was 45 inches.* The Fustian reed system of counting the number of beers of 38 ends or 19 dents on 24 J inches — this modi- L 1 62 WEAVING CALCULATIONS. fication of the Bolton count is even yet met with. The beer or porter of 19 dents is occasionally found in Scot- land^ and Yorkshire also. The Preston systems, viz. : — The I" count equalled the number of beers on 34 inches. JJ T 3) 53 5) 39 33 33 8" 3) }> JJ 44 55 33 4" 55 5J 55 54 35 The Nankeen count was the number of beers of 38 ends on 20 inches. An old Manchester system was the number of beers on 36 inches. A Summary of Reeds Counts now in use. I's reed in each system = the following dents in one inch. Stockport — number of dents on 2 inches ... .5 Bolton — number of beers (each 20 dents) on 24^! inches , . , . .... .8247 Scotch ell — number of hundreds of splits or dents on 37 inches . . ' . . . . . 2.7027 Scotch porter — number of porters (each 20 dents) on 37 inches . . . . . . . .5405 One inch scale — number of dents on i inch . . i To find an equivalent in any other system for a given counts in a given system. Rule A, — Multiply the given counts by the number of dents per inch in the standard of given system^ and divide by the number of dents per inch in the standard of the required system. HEALD AND REED CALCULATIONS. 1 63 Case I. Example. — To convert Bolton counts into inch scale counts, or, in other words, to find the number of splits per inch in a reed, having Bolton counts given, multiply those counts by .8247, and divide by i. The answer shows the number of dents and decimal parts. 8.245 is more often taken, but it gives the number with less exacti- tude. The fraction is only taken to two places of decimals, showing thus the lOOth parts of dents ; e.g., a 30 Bolton has 24xV^^ spHts per inch (.8247 x 30 = 24.741). Case 11. Example. — To convert 30 Bolton into Stockport counts. Multiply 30 by .8247, and divide by .5. Ans. Half-way between 49 and 50 on Stockport system. Case III. Example. — To convert 68 Stockport into Scotch. 68 X .5 -f 2.7027 = 27027)340000(1258 27027 69730 54054 20)58(2 porters. 156760 40 135135 18 ends. 216250 216216 34 Ans. 12°° and 58 over= 12^^, or 1200, 2 porters, and 18 ends. Case IV. Example. — To convert 40 porter reed into Stockport counts. 1 64 WEAVING CALCULATIONS. 40 X. 540544-. 5 •54054 AO .5)21.62160(43.24 20 "76 15 121 10 21 Ans. Slightly finer than a Stockport 43 reed. To find ends in a given width, Bolton counts. Rule B. — Multiply counts of reed by 1.649, ^^^ ^y "^idth in reed required. Example. — A cloth is required to be 38 inches wide (40 inches in reed), 6o's Bolton counts. 60 X 1.649 ^ 40 = 3948 ends. Note. — 1.649 is the calculated number of ends in i inch, calculating 2 ends in a dent — No. i Bolton counts. Obtained thus — 20 beers = 40 ends -r 24J inches. 2425)40000000(1.6494 2425 15750 14550 12000 9700 23000 21825 11750 In the reed table (XL) given below, the first row of figures shows the proportion which these reeds bear to one another, and the lower rows indicate the fineness of HEALD AND REED CALCULATIONS. 165 the different systems for 33 and 40 splits per inch respec- tively — the calculation results being given, which, how- ever, might not frequently appear in practice — Table XL The Inch Scale. Dents per inch. Stockport Dents on 2 inches. Bolton Beers on 24^ inches. Scotch. 100 dents on 37 inches. Scotch Porter. Porters on 37 inches. I 2 I.2125 0-37 1.85 33 66 40. 12.20 61 40 80 48.5 14.80 74 Reed for Striped Cloth. — In some striped fabrics, where the stripe is made by '' cramping " the ends in the reed, they are at the same time worked with extra ends in each eye of the heald, to compensate for the extra ends in the dents of the heald, and thus the same counts of healds as reed are used. In other cases it is necessary to cramp the ends in the reed to form a stripe, when from the nature of the pattern they must be drafted in the ordinary way in the healds. In that case different counts of heald and reed will be used. In either case it is necessary to find the counts of reed required for a cloth in which the pattern is formed by condensing the ends in certain parts of the reed. Rule C. — Find the number of dents occupied in 2 inches of the cloth. Example. — What reed will be used for a cloth made by introducing a stripe of 30 ends 3 in a dent, 10 ends 2 in a dent, 60 ends 4 in a dent ? When the cloth is woven 2 in a dent, the cumberboard is arranged for an 80 Stockport reed. 1 66 WEAVING CALCULATIONS. In a complete pattern occupy 30 dents. there are 100 ends. 30 ends 3 in a dent 10 „ 2 „ 60 „ 4 „ • 10 5 • 15 30 dents. >) These The cumberboard being arranged for an 80 reed will have 160 ends on 2 inches, therefore if 100 ends occupy 30 dents, 160 ends will require 48 dents; or, in other words, the reed will be a 48 reed Stockport counts. 160 30 100)4800 Ans. 48 Healds. — In Stockport counts four healds are consi- dered as a set, and four healds having one thread through each eye are dubbed of similar counts to the reed ; e.g., a 6o's set of healds has 15 stitches per inch in each set, equalling 60 ends per inch in the reed, which is a 6o's reed Stockport. Spaced Healds. — In spaced healds some are knitted finer than others, and consequently numbered differently. Rule D. — To find the counts of each heald stave, with a broken draft^ find the number of eyes per inch and mtdtiply by 4. In this point draft : — No. No. Stitches Heald. on each. 5 5 5 2 4 4 4 4 4 4 3 3 3 3 3 2 2 2 2 I I HEALD AND REED CALCULATIONS. 167 twelve ends are drawn on five healds, one end on the 1st heald, two on the 2nd, three on the 3rd, four on the 4th, and two on the 5th. Four different degrees of fine- ness are required in the' five heald staves, and the above draft is given to the knitter with instructions for so many patterns to the inch. Say five patterns per inch : 5 X 12 would give a 60 reed, and the number of stitches per inch would be respectively 5, 10, 15, 20, and 10 — the front one being equal to a Stockport 20's, for if there were four similar to it in a set, the number of ends would be 20. Similarly, the second stave equals a Stockport 40's, the third 6o's, the fourth 8o's, and the fifth same as the second, a 40's. To prove this, the requisite set of five staves might be obtained by taking one stave out of a plain 2o's set, two staves out of a plain 40's, one stave from a 6o's, and one from an 8o's set. Healds are usually sold by the score of beers. A beer equals 40 ends in 20 dents, therefore a score equals 800 ends. Reeds are sold by the beer of 20 dents each. Reed Space and Width of Cloth. — The reed space of a loom is, as its name implies, a measurement of the size of the cavity which receives the reed, and is generally measured from the edge of the backboard to the edge of the fork-grate on the other side of the loom. We have to deal with the width of cloth obtainable from a given reed space. In the first place, some little width is lost in not being able to use the outside dents of the reed, in the thick dents, and in the loss of space at each end of the reed, probably on an average from these three causes three- quarters of an inch at each side, or an inch and a half in all. Then there is the contraction between the width of 1 68 WEAVING CALCULATIONS. the yarn in the reed and the width of the cloth on the counter, say 5 per cent. On 40 inch cloth this accounts for 2 inches more. On these premises we may assume that a 43 inch reed space loom might at the outside weave a 40 inch cloth, but in the list 39 inch cloth is con- sidered to be the widest that can be conveniently woven, as the uniform list fixes the width at 4 inches from the reed space. Much confusion has been caused by the principle of the old Blackburn list, which classed the width of looms by the width of cloth that was supposed to weave easity and not by the reed space, as for example a 45 inch reed space was generally called a 40 inch loom. In the old Burnley list, on the contrary, the reed space was the width by which the loom was known. In addition to this, the figures cast on the loom were in many cases only nominal, and such anomalies as a 58 inch cloth being woven in a 55 inch reed space loom were not unknown. It is hoped that the explanation given will clear away many doubts, and that it will indicate why the new uniform list prohibits cloth from being woven within 4 inches of the reed space Without an allowance. Reeds to be Used. — The reeds to be used for the number of ends per inch vary accordingly as the cloth is required to be full, or poor, in the reed. The following table comprises two ranges actually in use for the two classes of cloth : — HEALD AND REED CALCULATIONS. 169 Table XII. Ends per Reeds in Use for Reeds in Use for Quarter Inch. Poor Cloths. Good Cloths. 8 28 29 10 35 36 12 41 43 13 45 47 14 49 51 15 52 54 16 56 58 17 60 62 18 64 66 19 68 70 20 70 72 22 73 80 24 86 88 26 92 96 28 98 102 30 104 no 32 112 118 The middle column is about I2| per cent, less than the supposed number of ends per inch in the finished cloth, and the last column about 8 per cent. less. It will be noticed that each reed in the range is not proportional. This is a practical necessity, as a manufacturer usually desires as far as possible the numbers to descend in steps of four for the sake of convenience. This prevents mathematical accuracy. The words ''full" and ''good" cloths are used in a trade sense. Some makers of very good old-fashioned cloths use even finer reeds than those given. STEAM-ENGINE CALCULATIONS. HE motive-power of our mills is an interesting and important subject, and worthy of treatment in more space than we can devote to it in these pages. The millworker who takes an interest in his surroundings would find pleasure and useful informa- tion in the possession of one of the numerous handbooks treating of engines and boilers, the conversion of natural resources into heat, and the generation by means of that heat of the steam which drives our sheds and mills. Specification of Engines and Boilers for Shed of 1000 Looms Plain Goods. Engines, — Horizontal, high and low pressure, con- densing. Indicated horse-power, 350. Boilers. — Two Lancashire, working at 80 lb. pressure. Economisers. — Set of 120 pipes. The power of an engine is indicated in horse-powers. A horse-power is taken as the capacity of performing 33,000 foot-pounds of work in one minute; lifting 3 300 lbs. 10 feet high, or 10 lbs. 3300 feet high would be 33,000 foot-pounds of work. Parts of Steam-Engine. — The figure (6) will enable the reader to understand the allusions to various parts of the steam-engine. PR is the piston rod, with a hori- 170 STEAM-ENGINE CALCULATIONS. 171 zontal reciprocating movement ; steam is admitted by the supply pipe S, either through the front port, a, or the back port, c, according to the direction in which the Fig. 6. piston has to travel ; the used steam escapes through the exhaust-port e. The sHde-valve / on the shde-rod regulates the admission and exit of the steam. To Obtain the Indicated Horse-power, — A diagram is taken from each end of each cylinder by means of a little piece of apparatus known as an indicator. This diagram shows the initial pressure of steam against the piston, and also the gradual lowering of pressure as the piston continues its stroke. An average is made at ten points of this steam pressure, and thus we obtain the average pressure throughout the stroke. This multiplied by the area of the piston gives the total pressure on the piston in pounds, and multiplied by the speed of the piston per minute in feet gives the number of foot-pounds of work done per minute. Rule A. — Multiply the average pressure of steam in the cylinder by the area of the piston^ and by the speed of the \J2 WEAVING CALCULATIONS. piston, which is obtained by multiplying the length of stroke by 2, and by the number of strokes per minute. Divide the result by 33,000, which gives the indicated horse-power. Example. — Find indicated horse-power from the fol- lowing particulars : — Average pressure 39.81, area of piston 400 square inches, length of stroke 5 J feet (equal- ling 1 1 feet both ways), strokes per minute 40. 39.81 400 1592400 5i 79620 7962 87582 2 175164 40 33000)7006560(212.32 I.H.P. 66000 40656 33000 76560 66000 105600 99000 66000 66000 Nominal Horse-power. — It is, in engineering estab- lishments, customary to have a system of standardising the power of an engine apart from its speed and steam pressure. Rule B. — Divide the area of piston in inches by 22. STEAM-ENGINE CALCULATIONS. 1 73 Example. — What is the nominal horse-power of a single cylinder engine, piston 40 inch diameter ? 40 X 40= 1600 ■7854 6400 8coo 12800 11200 22)1256.6400(57.12 N.H.P. no 156 154 2.64 22 44 44 Looms per Horse-power.— 2 J to 3 looms, with pre- paration, are calculated to require I indicated horse- power. Coal. — A good quality of coal should evaporate 8 lbs. of water for each i lb. burnt, and for a manufacturing concern (including sizing, which takes a great amount of steam) the consumption of coal should not be more than 3:^ lbs. per indicated horse-power per hour. Thus, 600 horse-power would use about 49 tons per week ; exclud- ing sizing, 2f lbs. would suffice. To find the weight of coal used per indicated horse- power per hour. Rule C. — Reduce the weight used in a week to pounds, divide by the horse-power and by the number of hours run per week. 174 WEAVING CALCULATIONS. Example. — Engines of 440 horse-power require 35 tons of coal per week. Engine running 56 hours. 'ZK X 2240 440 X 56 ^ Ans. 3.18 lbs. per I.H.P. per hour. Safety-valves. — To find the pressure at which a valve will blow off. Safety-valves are levers of the third order, and their use is to relieve the pressure of the boiler by opening when a certain pressure per square inch is arrived at. Rule D. — Multiply the weight in pounds by the distance of its point of suspension from the pin or fulcrum, and divide by the area of the valve and the distance from the fulcrum of its point of contact with the lever. Example. — A safety-valve lever is pivoted 3 inches from the top of the centre of the valve and 16 inches from the weight of 50 lbs. The diameter of the valve is 2 inches. At what pressure will it blow ? The area of the valve is 2^ x .7854. 4 X. 7854 = 3.1416. 50 X 16 = 800 3.I4I6X 3 = 9.4248. 9.4248)800.0000(84.8 lbs. pressure. 753984- 460160 376992 831680 753894 77696 ARITHMETIC. N a book of textile calculations the necessity of introducing various mathematical rules is un- avoidable, and in many cases the references to these rules may not be intelHgible to some readers who are not so familiar with calculations as others, in consequence perhaps of lack of early educa- tion, or of practice in the use of figures. Thanks to the system of compulsory education, such are now few and far between ; but the author considers that, in justice to these readers, he should make a few short explana- tions of the principal rules involved in this work, and of the signs and abbreviations adopted. Signs and Abbreviations Used. + The sign of addition, signifies added to. from which is subtracted, multiplied by. divided by. equal to. subtraction, multiplication, division, equality, /J ,, „ the square root. V » » 5> cube „ 2 over a number signifies that that number has to be squared. 3 over a number signifies that it has to be cubed. % stands for per cent. 17s 176 WEAVING CALCULATIONS. The four fundamental rules of Addition, Subtraction, Multiplication, and Division are well known, and re- quire no explanation excepting of the terms used in con- nection with them. The Sum is the total of numbers added together. The Difference or Remainder is obtained by sub- tracting one number from another. The Multiplicand is the number which is multiplied by another. The Multiplier is the number by which the multipli- cand is multiphed. The result of their multiplication is called the Product. The number which is divided by another is called the Dividend. The one by which it is divided is called the Divisor. The result of the division is called the Quotient. Proportion. — This is necessary to determine from a given ratio in which one number stands towards another number, what the ratio or proportion would be were the first number to be replaced by a third number; such as, for example, if a number of articles give a certain weight or length, or if a number of workmen do certain work, what would be the weight or length or work done if the original number of articles or men be changed ? Rule A. — Place the three given numbers so that the two numbers in which the proportion is known stand first, and the third number is the one for which the proportion is un- known. To obtain me answer, multiply the second and third terms together, and divide by the first. The following signs are generally used: — : is to : : so ARITHMETIC. IJJ Example. — If 7 skips of yarn contain 21000 cops, how many will 3 skips contain ? The numbers are placed — 7 : 21 000 : : 3 \ans. or as 7 is to 21000 so 3 is to the answer. To obtain the answer, multiply the second and third terms together, and divide by the first. 21000 X 3 = 63000 7)63000 9000 ans. Percentag'e may almost be classed with proportion, as it is really a proportion problem, 100 always being taken as the third term. Percentage is the ratio which one number bears to another number, expressed in the ratio which lOO would bear to a certain number called the percentage. Example. — A manufacturer calculates that he loses 2d. on a 75 yard piece which cost i6s. 8d., what is that per cent. ? Expressed in proportion terms — 200 : 2 : : 100 \ans. Multiply the second and third terms, and divide by the first. 2 X 100 -^ 200 = I per cent. Rule B. — To find percentage, multiply the number of which it is desired to find the relation by 100, and divide by the term to which the other term bears relation. Example. — A man receives as dividend on shares ;^I9. This bears relation to the value of his shares as 19 to 190, what is the percentage ? 19 X 100 -f 190= 10 per cent. ans. M 1/8 WEAVING CALCULATIONS. Vulg-ar Fractions. A fraction is one or more parts of a thing, and indicates the number of parts. It is written by two numbers, one above the other, with a line between, thus : I, |-, |-. The lower number is called the Denominator, and shows the number of parts into which the thing is divided. The Numerator is the upper number, and shows how many of these parts are represented, as |^ = seven- eighths, 7 = four-sevenths. Reducing". — To reduce fractions to their lowest terms. Cancelling" is another name for this. Rule C. — Find a number that will divide into both the numerator and denominator without remainder, and divide them until they are no longer both divisible by a number greater than one. The value of the fraction will not be altered. Thus Y^o- may be divided by 5, and gives \^. This is again divisible by 5, and is reduced to f. To Add Fractions. ' Rule D. — Reduce them to a common denominator, and add the numerators. Thus:i + ^ + ,V Seventy is the lowest number which will contain 2, 7 and 10 without remainder, and the three fractions are then described |g, -fg, |i = ?^. This may be reduced by dividing by 2 to || or \\% ans. To Sulbtraet Fractions. — Proceed as in addition, but subtract the smaller numerator instead of adding. ARITHMETIC. 1/9 To Multiply Fractions. Rule E. — Multiply all the numerators together for a nume- rator, and all the denominators together for a denominator. Example. — Multiply |, |, | together. 3x5x7 = 105 4x6x8 = 192 This may be reduced, by dividing by 3, to || ans. Division. — To divide fractions. Rule F. — Invert the divisor and multiply. Example.— A9_^7_49 y 8_392 80-8~80'^7~5 6^ This may be reduced by dividing by 56 to -f-^ ans. Decimal Fractions are expressed always in tenths, hun- dreds, thousands, &c. ; and the numerator only is written. A point is placed before the decimal number to distin- guish it from an ordinary one, and to the right of the point the tenths are placed, or, if none, a cypher; then the hundreds are placed as the second figure from the point , thirdly, the thousandth. Thus yV? tIo-j t/oq- would- be written .163, or .796 would be ^^^^o oi" toj tw' and x^- Decimals are far more suitable to textile calculations than vulgar fractions, and their use should be cultivated by the earnest student. The addition and subtraction of decimals is pro- ceeded with as in ordinary figures, care being taken to get the points exactly under one another. Rule G. — Multiplication.— il/?///^>/v the two numbers together irrespective of the decimal points, and afterwards count from the right of the product as many figures as l80 WEAVING CALCULATIONS. there were to the right of the multiplier and multiplicand^ and place the point. Example.— 1.347 X 2.86 1-347 2.86 8082 10776 2694 385242 There are three figures to the right of the point in the multipHcand, and two in the multipHer. The point is therefore placed as under^ five figures from the right — 3.85242 Recurping" Decimals. — Certain fractions cannot be expressed in full in the decimal system, e.g.^ ^ in decimals would be .iiiiiiiii, and so on. These are called recurring or repeating decimals, and are marked by placing a point over them, or if there are several in the repeat, over the first and last of the group. Example.— \ is .written . i Y is written .142857 Square Root. — To extract. This problem, known as one branch of evolution, con- sists in finding the number which, when multiplied by itself, or, in other words, when squared, gives, as the product, the given number. Rule H. — Divide the number into pairs of figures, he- ginning at the unit place. Find the greatest number which, when multiplied by itself, i.e., when squared, will be con- ARITHMETIC. l8l tained in the left-hand figure or pair ; place this root as a quotient, and as a divisor also, and subtract their product as in ordinary division. Then bring down two more figures, and double the previous divisor, and add the largest figure to it that can be the quotient also. Then multiply the divisor by this figure. Double the quotient, and proceed as before. If there is a remainder, add two cyphers to it, and proceed as before, calling each addition to the quotient a decimal. Example. — Find square root of 8462548064. Mark off thus. 9 is the root of the greatest square con- 9)8462548084(91992.1 tained in 84. 81 Double 9. I is the highest 181)362 number that can be added 181 to 18 and to the quotient 9. 1820)181^4 Double 91. 3.5461 18389)169380 165501 183982)387984 367964 Add 2 cyphers and place a 1839841)2002000 decimal point to the quo- 1839841 tient. 162159 Ans. — 91992. 1. In all textile calculations the slide rule will be found very useful, and is well worthy of study by the earnest textilist. The old-fashioned, antiquated rule is not re- ferred to, but the modern one, constructed on the lines of the rules largely used by many Continental manufacturers. A book by Mr. J. W. Nasmith, of Mulhouse, Alsace, shortly to be published by Mr. John Heywood, will treat exhaustively of this subject. EXAMINATION QUESTIONS AND ANSWERS. HE City and Guilds of London Institute hold annually an excellent series of examinations in the different trades. For some years cotton-weaving was examined with cotton- spinning under the name of ''Cotton Manufacture," while questions were concurrently given under the subject of ''Weaving and Pattern Designing," which included also woollen, worsted, silk, jute, and linen weaving. In 1889, for the first time, a separate examination was held in " Cotton-Weaving." The author, considering that it would be beneficial to the textile student of our technical schools to reprint some of these questions and append answers, and that it would also be interesting and instructive to older readers to study the various exercises that have been propounded, has here given a selection from the various papers. Questions necessitating calculations have alone been given, and questions referring to other textile trades have been omitted, as have also duplicate or similar questions given in different years. As most calculation questions are repeated in succeed- ing years, the duplicates not answered in this book are left for test questions, to be given by the teachers. 182 EXAMINATION QUESTIONS AND ANSWERS. 1 83 Selections from Weaving and Designing* Papers. 1883. — No. 5. — If you are weaving a 7 pick pattern with tappets (that is, a pattern which recurs every seven picks), and your tappet- wheel contains 1 50 teeth, whilst the wheel on the crank shaft contains 25 teeth, how will you obtain the proper rate of speed for the tappets, and what wheels will you use for the purpose ? Intermediate wheels would be required. By rule given on page 88 it is shown that we must find what proportionate speed the 25 and 150 would give; 150-^25=6. Then as 6 is to 7 so are the two inter- mediate wheels to one another, say 60 and 70. The train of wheels would be 25 driving 70, and 60 driving 150. No. 11. — Calculate the cost of material in a piece of cloth made as follows : — 100 ends per inch of twofold 70's cotton at 2s. 3d. per lb., 84 picks per inch of single 40's worsted at 2s. 5d. per lb. The piece to be woven 30 inches in the reed, 5 3 yards long, made from 5 8 yards of warp, allowing 5 per cent, for weft wasted in weaving. Rules given on pages 14 and 20. 30 X 100 X 58 ^840 X 35's = 5.9i lbs. twist. 30 X 84 X 53 -- 560 X 40's = 5.962 Add 5%= .298 6.26 5.91 lbs. twist at 2s. 3(5?'. = 159.57^. 6.26 ,, weft ,, 2J-. 5(2?. = 181.54^. 341 = £^, 8j-. 5^. 1884. — Ordinary Grade.— No. 5.— A drum 13 inches in diameter^ making 120 revolutions a minute, is required 1 84 WEAVING CALCULATIONS. to give motion to a shaft required to make 156 revolu- tions. Find the diameter of the pulley required. Rule given on page 62. Ans. 120 X 134-156 = 10 inches. No. 9. — How many hanks will be in a pound weight of two-ply yarn made by twisting one thread of 24's and one of 30's single cotton ^'•arn together ? See Rule on page 46. Ans. Multiply 24 x 30, and divide by 24 + 30 = 54. 24 30 54)720(13.3 54 180 162 Ans. i2>¥s. No. 10. — Having 40's cotton yarn, and wishing to twist it with another yarn to make it 24's, what numbers would you employ ? Ans. By rule E. on page 46. 40 X 24 = 960 40-24= 16 16)960(60*8 96_ Ans. 6o's. No. 13. — Give a calculation showing the weights of warp and weft in a piece of cotton cloth woven in a 20-reed with eighteen shots (Manchester count), 40 inches wide, 60 yards, 70's warp, 8o's weft. Allow what you consider EXAMINATION QUESTIONS AND ANSWERS. 1 85 necessary for shrinkage in length and width, and extra ends for selvages. Rules given on pages 14 and 20. Width to be taken at 40, v^ith say 2 inches allowed for contraction and selvages. 20 reed X 18 shots = 80x72 to the inch. Allow 3 per cent, on length. Twist . 42 X 80 X 6if -7- 840 X 70 = 3.53 lbs. Weft . 42x72x60 -^840x80 = 2.7 lbs. 1885.— Ordinary Grade.— No. 10.— Explain the counts or Nos. by which the fineness of cotton, silk, linen, woollen, and worsted yarns are indicated. How would you proceed to prove the counts of any yarn ? Explanation of this is given on pages 39 to 53. 1886.— Ordinary Grade.— No. 6.— If the crank shaft of a loom is making 130 revolutions a minute, having a 12-inch pulley, what size of pulley will you require to have on to make it revolve at the rate of 160 revolutions a minute ? Rule given on page 63. A smaller pulley would be required. 130 X 12 -^ 160 = 160)1560(9! 1440 I20_ 3 i6^~^ Ans. 9x inches. 1886.— Honours Grade.— No. 1.— It is required to weave a piece of cloth which must be 48 yards long and 28 inches wide, and you have only 180 hanks of weft 1 86 WEAVING CALCULATIONS. yarn (cotton). How many picks per inch must the piece contain ? No rule has been given for this, but the reader can easily deduce one from the abundant explanations given in the early part of the book. Rule A. — Multiply width by lengthy and divide into length of yarn given. 48 yards X 28= 1344. 180x840=151200. 151200-f I344= ii2|. Ans. 1 12 J. No. 10. — How many hanks will be contained in one pound weight of 3-fold yarn made by twisting one thread of lo's, one of 30's, and one of 50's single worsted yarn together ? Rule given for finding counts on page 47. 50-50 = 1 50-^30 = 1.66 50-10 = 5 7.66 7.66)5000(6.52 hanks in a pound 4596 of the 3-fold yarn. 4040 3830 2100 1887.— Ordinary Grade.— No. 2.— What will be the resulting counts of two threads twisted together as follows — viz., 8o's single cotton with 32's single worsted ? And what quantity of each will be required to produce 100 lbs. of folded yarn ? EXAMINATION QUESTIONS AND ANSWERS. 1 8/ First find equivalent in worsted of 8o's cotton. Rules given on pages 50 and 46. 80 X 840 -^ 560 = i2o's Twofold 32's and i2o's = 32 X 120 -r 32 + 120 = 3840-152 = 25.26's counts of resultant yarn expressed in hanks of 560 yards. 100 lbs. X 25.26 = 2526 hanks of each. 32)2526(78.94153. of worsted. 224 "286 256 300 288 120 25.26 hanks of 560 yards x 100 x 560 -=- 840 = 1684 hanks of 840 yards. 8o's)i684(2i.o5 lbs. cotton. 160 80 4 Ans. 25.26's; 78.94 lbs. worsted; 21.05 ^t»s. cotton. No. 10. — What is the speed of a loom driven by a 14-inch drum on main shaft^ making 120 revolutions per minute; loom pulley being loj inches? Rule given on page 59. 120 multiplied by 14 and divided by 10 J. Ans. 160 picks per minute. No. 11. — What number of shots, per inch, will a 30- teeth change pinion give, other parts of the motion being 1 88 WEAVING CALCULATIONS. — ratchet wheel, 50 teeth ; intermediate wheel, 120 ^eeth ; and intermediate pinion, 15 teeth; feed roller wheel, 75 teeth ; and circumference of feed roller, 1 5 inches ? Ans. Rule given on page 92. 50X120X75-M5X 15 = 2000. 2000 I J per cent. = 30 30)2030(67! 180 230 210 20 30 Ans. 67! picks per inch. No. 12. — State the time it will take a loom to weave 60 yards of cloth with 80 shots per inch. Diameter of puUe}^ on crank shaft 8 inches; diameter of drum on main shaft, 14 inches; main shaft revolutions, 120 per minute, allowing 20 per cent, for stoppages. The piece has 60 x 36 x 80 = 172800 picks in it. The loom makes per minute — 120 X 14 -f-8 = 2IO Less 20 per cent. 42 168 picks. 1728004-168 = 1028! minutes = i7 hours 8^ minutes. A/is. 17 hours, Sf minutes. 1888.— Ordinary Grade.— No. 13.— Make a stripe as follows : — 60 ends cotton, 40 ends silk, 24 ends cotton, 20 ends silk. Cotton 2 ends in a split, silk 4 in a spht. Reed 40 splits or dents per inch, width of piece 32 inches in reed. How many ends of each material will be required ? EXAMINATION QUESTIONS AND ANSWERS. 1 89 Ans, 6a ends of cotton at 2 ends in a split occupy = 30 splits. 40 „ silk „ 4 ,, ,, = 10 ,, 24 „ cotton ;, 2 5, ,, = 12 ,, 20 „ silk „ 4 „ „ =^ „ One stripe occupies = 57 ,, Number of splits available = 40 x 32 = 1280 57)1280(22 complete stripes and 26 splits over 114 140 £14 26 The 26 splits could be used for a border of cotton 2 ends in a split, thus giving a cotton border at each side of the piece, and the number of ends of cotton that v^ould be then required would be — 22 stripes each 84 ends cotton = 1848 26 splits „ 2 „ „ = 52 1900 ends cotton. 22 stripes each 60 ends silk =1320 ,, silk. Honours Grade. — No. 1. — Same paper. — Give the average counts of yarn in any cloth composed of alternate threads of single 1 6's and single 40's yarn. Ans. Apply rule given for twofold yarn, page 46, and multiply by 2. 16 X 40 -^ 16 + 40 56)640(11.428 56 80 II .428 S6 2 240 22 .856'S ans. 224 160 112 480 190 WEAVING CALCULATIONS. Proof:— 1 hank of i6's weighs 43 yj grains £ J, 40's „ i75_ „ 2 hanks ,, 612J „ Average = i hank ,, 3°^ » 7000 4- 306;!: = 22.856's Ans. 22.856's. Selections from the Cotton Weaving"^ Examination Questions. 1889 Examination.— Ordinary Grade.— No. 7.— How many tokens of 20 healds each will you have on each heald in a five-end satin with a total of 1600 ends? And what space will each token stand in, suppose the healds are for a 50-reed Manchester counts of reed ? Ans. 1600 ends in all -4- 5 shafts = 320 on each shaft, making no allowance for plain selvage. •520 ^ — = 16 tokens on each heald or shaft. 20 The whole reed space occupied is 1600 -=-50 = 32 inches. Each token therefore stands in 32 -=-16 = 2 inches, or, in other words, there are 20 eyes in every 2 inches of each shaft. No. 13. — What pinion or crank shaft and intermediate or carrier wheels would you use to drive a woodcroft tappet 16 picks to the round, if the tappet wheel has 180 teeth ? ^ Cotton Weaving. The subjects which are comprised in the syllabus to be studied for this examination in addition to the calculations, such as the construction and use of the machinery, both in the weaving and prepara- tory processes, are fully described in the author's book on " Cotton Manu- facturing," price 6s. EXAMINATION QUESTIONS AND ANSWERS. 191 Ans. One wheel on crank shaft would not drive 180 at the required speed, as I8o-^ 16 gives a broken size. A pair of intermediate wheels must be employed. Apply rule on page 88. Supposing any wheel, say 16, to be on the crank shaft — 180 1 As ii^l is to 16 so the required wheels are to another, say 45 and 64. The train would be 16 driving 64 » 5) 45 » 180 No. 14. — What change v^^heel vv^ill you require to put in 25 picks per quarter inch? The ratchet vi^heel has 120 teeth driving the required pinion, which gears into a carrier wheel of 50 teeth, and 30 teeth driving the roller wheel of 90 teeth, the roller being 15 inches in circum- ference. Apply Rule D. on page 92 for obtaining dividend. 120 X qo X go ^ — ^- = 300 30 X 60 60 is the circumference of roller in quarter inches. Add I J per cent, for contraction, 300 4i 304 J -f picks required, 25 = 12.18 Afts. Nearest change wheel 12, which, being less size than calculation gives, would give more than 25 picks to the J inch (about 25f). No. 18. — You have 160 bobbins of 30's twist, each containing 8 ozs. of yarn, and wishing to use all the yarn (allowing 5 per cent, for material left on the bobbins and waste) in a warp of 3600 ends, what length should the warp be ? 192 WEAVING CALCULATIONS. Multiply 30's by 840 to find yards in a pound, and divide by 2 to get length in half a pound, deduct 5 per cent. — Giving 11970 yards usable on each bobbin. 11970 X 160 bobbins = 1915200 total yards usable, and this divided by 3600 gives length of warp. Ans. 532 yards. No 19. — A piece of cloth, 40 yards long, 30 inches wide, with 80 ends per inch (out of loom), and 1 20 picks per inch, contains 18 lbs. of yarn; what is the average counts of warp and weft, allowing a shrinkage of 10 per cent, from reed ? >^ Ans. Apply Rule L., page 28. ''^'^4. The width = 30+ 10 per cent. =30 + 3 = 33. The tape length 5 ^ will be about 42 yards. The length of twist = '^^-^<-..^ _^ 33 X 80 X 42 yards = 1 10880. The length of weft is — ■ ^.:^^ 33 X 40 X 120 = 158400. ^' 1 10880 + 158400 = 269280 yards. 269280 divided by 840 and by 18 lbs. gives 17.809. Ans. 17.809's average counts. Honours Grade. — ^No. 4f,—Same paper. — If you are placing a loom to run 180 picks per minute side by side with a loom to run 96 picks per minute, in a shed where the shaft makes 108 revolutions, what size of drum would you put on the shaft, and what size of pulley on the loom in each case ? Ans. The proportionate sizes of driving and driven pulleys in the first case will be 180 to 108, or, say, 15 inches driving and 9 inches driven. In the second case 96 to 108, or, say, 16 and 18 inches respectively. EXAMINATION QUESTIONS AND ANSWERS. 1 93 No. 15. — Suppose you are weaving a plain cloth with 60 ends per inch and 60 picks per inch, equal counts of warp and weft, and you wish to make a four-end twill using the same yarns, how many ends and picks per inch would you put in to make a cloth of similar firmness ? Ans. Suppose the 4-end twill to be an ordinary one — 2 ends up out of 4. There would be two intersections in 4 ends, that is, 4 ends and 2 picks passing through equal to 6 threads. In 4 ends of plain there are 4 intersections, 4 ends, and 4 picks, equals 8 threads. Then with the same reed and pick and yarns the twill would be looser, or to make it as firm we must increase it at the proportion of 6 to 8, or — — - — =80 ends X 80 picks per inch. No. 16. — Calculate the cost of i dozen tapestry table- covers from the following, particulars : — Size on table 32 X 34 inches, 33 inches in reed. Warps 600 ends 2/60 indigo blue at 3 ,, 2,432 ends 2/40 red . . „ 2,432 ends 2/40 brown . Weft 30 picks per inch 6's ecru » 30 „ „ 6's black Weaving, is. 3d. per dozen; general expenses, 20 per cent, more than weaving ; allow 5 per cent, for waste in both warp and weft, 5 per cent, for the taking up of the coarse warps in weaving, and 10 per cent, for the taking up of the fine warp. Ans. Weight of 2/60's. Length = 34 inches x 12 + 10 per cent, for length. 34 X 12 = 408. s. d. at 3 2 per lb. 4i „ » I 4j » 5, I I „ » I I » 194 WEAVING CALCULATIONS. 408 40.8 448.8 inches 600 ends 36)269280.0 7480 yards 7480 + 5 per cent, waste, 374 840)7854(9.35 7560 2940 2/60's or 3o)9.35(.3iilbs. 2520 90 4200 35 4200 30 "50 .311 at 35. 2d. — w.Zd. Weight of 2/40's. Length 34 x 12 = 408 + 5 per cent. = 428.4. 428.4 4864 ends 17136 25704 34272 17136 36)20837376(57881! yards. 180 2894 5 per cent, waste 283 840)607751(72.35 hanks 252 5880 ^17 1975 288 1680 20)72.35(3.61 lbs. 293 295.5 6o_ 288 252.0 123 77 43-50 ^ 36 35 . 21 3.61 lbs. at i^. df\d. = 59.56^. EXAMINATION QUESTIONS AND ANSWERS. 1 95 Weft— 33 X 60 picks X 1 1 J- yards ^ 6's x 840 = 4.45 lbs. 4-45 .22 = 5 per cent, waste. 4.67 at IS. id. 60. J id. Twist .... d. II. 8 Weft .... Weaving .... 59-56 60.71 15.00 Exs. = i| weaving 15.00 3.00 165.07 per doz. = 135', 9^. Ans. 13^-. 9^. per dozen. 1890 Paper.— Ordinary Grade.— No. 3.— What is the counts of a doubled thread composed of 20's and 40's twisted together? Apply Rule D. and Example, page 46. Ans. 13.33's. No. 4. — How much 6o's twist will you require for a set of slasher's bea,ins, the whole set to contain 2360 ends, 18000 yards ? Apply Rule D., page 72. Multiply 2360 by 18000, and divide by 840 to bring it to hanks, and then by 60, the counts. 2360 X 18000 840 X 6q Ans. 842.85 lbs. No. 9. — If weaving 8-end satin, 40 inches in reed, 56 reed, Stockport counts, how many healds would you require on each stave in two inches. Also, how many 196 WEAVING CALCULATIONS. healds for each stave, if drawn in on 8 staves, centred backwards and forwards, if for a 14-end pattern ? In the case of an 8-end satin there would be an equal Nos. number of ends on 8. — = V- each stave (see draft, 7- — ^ Fig. 7). There would 6. _^— — ^^ _ be g healds. In two 5- ^^ inches of 56 reed 4 ' ^^— Stockport, two ends 2' " ** in a dent, there would ^' " *'"^~~" be 112 ends. This I. -A — divided by the num- Fig. 7. -^ . ber of staves (8) gives the number of heald eyes on each stave — namely, 14. A71S. 14. The second part of the question involves a different draft, shown at Fig. 8, It will be seen that the first stave Nos. 8. ^ Nc 7. .^^ :v 6. N^ i^^ 5 N^ H 4. — N ■ N^ 3= N^ \ 2. _i^ :»^ I. V Fig. 8. and the eighth have only half as many ends or e3^es on them as the others. A glance at the draft shows that out EXAMINATION QUESTIONS AND ANSWERS. 1 97 of 14 ends 2 healds have I end each, and 6 healds 2 ends each. Apply Rule B. Rule B. — Having given the counts of reed, the number of healds required for the pattern, and the number of ends on each stave for one pattern, the number of ends on each stave for any distance can be found by dividing the total number of ends for that distance by the number of ends in the pattern, and multiplying by the number of ends on each stave in one pattern. As there are 14 ends in the pattern and 112 ends in . , , 112 o 2 inches, there are ■= b patterns. 14 Multiplying this by the ends on each stave in one pattern, we have the ends on each stave in 2 inches. I St stave 8x1=8 2nd „ 8 X 2 = 16 3rd „ 4th „ 5th „ 6th „ 8 X 2 = 16 8 X 2 = 16 8 X 2 = 16 8 X 2 = 16 7th ,, 8th „ 8 X 2 = 16 8x1=8 112 No. 14. — What size of pulley will you require on a loom to give 168 picks per minute, if the driving drum is 14 inches on a shaft running 108 revolutions ? See Rule D., page 62. Multiply 14 by 108 and divide by 168. The answer is 9 inches diameter of pulley required. No. 15. — Draw the taking- up motion you are accus- tomed to, and give the train of wheels required to weave 198 WEAVING CALCULATIONS. 112 picks in I inch of cloth ; circumference of taking-up roller 14 inches. For sketch of taking-up motion, see page 91. This is adapted to lower picks than the question refers to, but still the necessary picks could be inserted. As explained on page 92, find the dividend for that particular gear by applying Rule D. Taking the same wheels as are given on the page mentioned, with a 14-inch cloth roller, the dividend is 50X 75 X IOO-M2 X 56= 558.03, add I J per cent. = 586.4. This, divided by the number of picks to the quarter, 28, gives a change wheel of 20.4 teeth. Either a 20 or a 21 would be used, say a 20. The com- plete train in this case would be 50, 20, 100, 12, 75, and 14 inch cloth roller. The wheel 20 gives rather more than the desired picks, but is the nearest that can be used with the taking-up motion under discussion. A Pickles' motion, page 93, would give the exact result with either 84 and 27 or 56 and 18 change wheels. Honours Grade.— No. ii.— Same paper. What is the value per yard grey of the following quilting cloth (show all calculations), 72 reed Stockport counts, 3 1 inches in the reed : — Face warp 2 ends in dent 6o's twist 1.25 yards of warp per yard of cloth. Back warp i end in dent 32's twist i.i yards of warp per yard of cloth. Total picks 180 per inch, in the order of 10 picks of face weft 50's to 2 picks of back weft 12's. Weaving 2\d. and general expenses 2jd. per yard. Prices of yarn in loom, 6o's i6d., 32's H^d., 50's weft I3jd., 12's weft 9fd. This calculation must be treated as if there are two EXAMINATION QUESTIONS AND ANSWERS. IQQ separate cloths. One cloth is made 31 inches, 72 reed, I yard long, 2 ends in each dent, 6o's twist, and with yj of the total picks per inch, 50's weft. The other cloth is 31 inches, J 2 reed, I yard, i end in a dent, 32's twist, and with -^^ of the total picks per inch of 12's weft. The contraction allowances are given, and no allowance is made for side ends, as explained in the chapter relating to cloth calculations, nor is any special allowance made for waste, as the prices given in the question cover cost of yarn in the loom. Take the first cloth, applying Rules A. and B. on page 10. 31 X 72x1^5 ^_ @ i6^- per lb. =.8848^. 840 X 60 S ' — — "— Weft. — Apply Rule D., on page 20. \% of the picks belong to this cloth, and are of 50's weft. 180 X 10 . , . , = 150 picks per mch. ^I X ICO X I r-s ^ J 1U ■^— ^ = .1107. .1107 @ i3f<2. per lb. = 1.494 pence. 840 X 50 — — Second cloth. — Warp, see same rule as for the other warp. As there is only i end in a dent, there will only be 36 ends per inch. ^ — — ^ — ^ — ^==.0456 lbs. @ i4M = .66i2^. 840 X 32 Weft. — See same rule as for other weft. The picks are jg of the whole 180 or 30 per inch. ^- — = .OQ22 lbs. @ c)\d. = 8qq^. 840x12 ^ ^ ^^ -^^— !00 WEAVING CALCULATIONS. Summary : — d. ist cloth, twist , , .8848 weft • 1.494 2nd „ twist . .6612 weft . . ,899 Weaving per yard • 2-25 Other expenses per y ard . 2.5 Ans. Grey cost per yard . . 8.689 pence. No. 12. — An engine is driving a line shaft by ropes, and running 60 strokes per minute, with a driving drum of 20 feet. Give a size for line shaft drum to be driven by engine drum, and speed of line shaft; also, presuming you have mitre wheels on driving shafts of shed from line shaft, give sizes of drum driving loom, and loom pulley to drive your loom 180 picks per minute. Three wheels have to be found, — the driven one on the line shaft, the drum driving the loom, and the pulley on the loom. Some liberty is left to the candidate in assuming the dimensions of the pulleys. Suppose the ratio of the dimensions of the driving drum and the loom pulley is 15 to 10. This would give a firm grip and good driving. Then the speed of the shaft over the looms would be 120; for 180 multiplied by 10 and divided by 15 equals 120. Here the Rule C. given on page 61 has been applied. 120 is the speed both of the shaft over the looms and the line shaft, as mitre wheels connect them. The drum driving the line shaft is 20 feet diameter, running 60 revolutions per minute. Then applying Rule D. on page 62, the pulley on the line shaft must be — 60 X 20 120 = 10 feet diameter. EXAMINATION QUESTIONS AND ANSWERS. 201 Ans. The whole train would thus be 20 feet drum, speed 60 revolutions per minute, driving 10 feet pulley on the line shaft ; on same shaft is mitre wheel, say 50, geared with another 50 mitre wheel on shaft over looms, carrying a 15 inch pulley driving a 10 inch pulley on the loom. The proof of the accuracy of this train can be found by applying Rule A., page 59, thus — 60 X 20 X 50 X 15 =180 revolutions of loom pulley per mm. 10 X 50 X 10 1 / r 1891.— Ordinary Grade.— No. 3.— Referring to the process of beaming a ball warp, give the number of teeth per inch in the wraithe if the v^arp contains 84 beers by 20, and stands 28 inches between the flanges. If the warp contains 84 beers of 20 ends each, there will be 84 X 20, or 1680 ends in all. Divide this by the space occu- pied between the flanges of the beam, viz., 28 inches, and we have the ends per inch = 60. There would probably be for this size of warp 4 ends in the dent of the wraithe, then there must be 15 teeth per inch ; if 2 ends per dent, then 30 dents per inch ; if 6 ends per dent, then 10 dents per inch, &c. No. 5. — What weight of yarn shall I dye of each colour to make a pattern warp, 2 blue, 2 yellow, 2 blue, 6 red, 2 blue, 2 yellow, 2 blue ? The warp to contain 720 ends of 20's twist, and to be 820 yards long. 5 per cent, allowed for waste. Apply Rule A. and Rule H., pages 14 and 25. 720 ends X 820 yards -^ 840 and 20's = 35. 143 lbs. Add 5 per cent. i-757 5, 36.9 lbs. The ends in one pattern are 18, of which 8 are blue, 4 yellow, and 6 red. 202 WEAVING CALCULATIONS. js of 36.9 lbs. are 8 x 2.05 = 16.2 blue. 1% „ 36-9 » 8x2.05= 8.1 yellow. T8 »> 369 ;, 8x2.05 = 12.3 red. 36.9 lbs. No. 6. — What counts of yarn shall I have to double with 30's to produce 12's? Apply Rule E., page 46. ^o x 12 ^60 , ^ = *?— - = 2o's 30 - 12 18 Ans. 2o's. No. 7. — A warp of 1035 ends 750 yards weighs 33 lbs. What are the counts ? Rule D., page 72, may be made to apply to this question by changing the terms. Length 1035 ^ 750 = 776250 yards. Divide by 840 = 924 hanks. 33)924 28 Ans. 28's counts. Honours Grade. — Sa7ne paper. — No. 7. — What will be the relative strain in the shedding of two warps, if one is weaving in a loom running lOO picks per minute, the shed being opened 3 inches each pick, and the other weaving in a loom running 90 picks, the shed being opened 4 inches each pick ? the weighting of the warps being the same. The strain as affected by the size of the shed is in pro- portion to the amount by which the threads would be lengthened were they perfectly elastic, and this is in pro- portion to the square of the distance that the thread is raised. EXAMINATION QUESTIONS AND ANSWERS. 203 The strain caused by the speed is in direct proportion to the speed. Therefore we compare them by the product of the size of shed squared and the speed. ist. Lift 3 inches squared = 9 x speed 100= 900 2nd. „ 4 „ „ =i6x „ 90 = 1440 900 I 1440 1.6 The loom with the 4-inch shed has the greater strain in proportion of 1.6 to I. No. 14. — Presuming that the relative diameters of cotton yarns are {inversely) as the square root of their respective counts, what counts of yarn will give the same firmness in a 2 and 2 twill that 20's would give in a plain cloth, the threads being equal in number both ways ? The question is obviously meant to read as if the word '^ inversely " were inserted as shown. Assuming that the opening between the warp threads, where the weft passes through, in interlacing, is about equal to the diameter of the weft, and consequently of the warp, where the same counts are used for warp and weft, then in plain cloth, where the weft interweaves with every end, there will be 4 spaces or intersections for 4 ends of warp ; or, in other words, 4 ends occupy a space equal to the diameter of 8 ends. If the weave is changed to a 2 and 2 twill, then for each 4 ends, the weft passes once under and once over, or occupies 2 spaces, making the 4 ends of warp to occupy the diameter of 6 threads. If the counts remained the same, the cloth would conse- quently be more loosely built. To remedy this the yarns 204 WEAVING CALCULATIONS. must be made coarser, and the diameter of the new yarn must be to the diameter of the old yarn, as 8 is to 6, these being the relative spaces occupied. The square root of 2o's is 4.47. 4.47 multiplied by 6 and divided by 8 is 3.3525. This is the square root of about iij's yarn. Ans. iij's yarn. No. 17. — How much per yard (grey) will a sateen stripe cost woven to the following particulars : — Brocade stripe of 3 inches, and sateen stripe of 2 inches (in reed) alter- nate, 40 inches wide in reed, brocade 2 in dent, sateen 4 in dent, twist 40's throughout, 64 reed Stockport, 96 picks per inch 30's weft weaving fd. per yard. Expenses 10 per cent, more than weaving. Cost of twist in loom I4jd. per lb., weft 9jd. Apply Rules F., page 23, and D., page 20. Examples given at pages 193 and 198. Ans. Allow 10 per cent, for contraction in warp and 36 side ends, and nothing for waste beyond what the price allows. Warp .1185 lbs. @ 141 = 1.72 Weft .1524 „ @ 9i = i-4i Wages . . . = .75 Expenses . . , = .82 Total . . 4.7^. INDEX. When several page numbers are given against one subject, the more important ones are given in heavier type. Abbreviation marks 175 Agency terms 54 American yarn counts 49 Angle 67 Answers to examination ques- tions 182 Area of circular space 66 Arithmetical rules 175 Average counts of yarn in cloth 192 Average picks per inch 24 Balance of fabrics 33, 193, 203 Ball-warping calculations ... 73 Beaming calculations ... 'jo, 75 Beaming wages 104 Belts 64 Blackburn list of wages 124 Blackburn reed counts 161 Boilers 170 Bolton reed counts 160 Botany yarn ... ... 48 Bundled yarns 51 Burnley list of wages 132 Casting out Changing character of cloth 33, 193, Changing speeds Chorley list of wages ... 128, Circular area Circumference Circumferential velocity 99 203 63 139 66 66 64 Cloth calculations 13, 183, 184, 192, 193, 198 Coal consumption 173 Coiling motion 90,97,138,187,191 Colne coloured goods list ... 152 Coloured goods calculations 25, 193, 201 Coloured winding wages ... 103 Contraction in weaving 14, 16, 18 Converting one system of reed- counting to another 162 Converting one system yarn counts to another 50 Costing cloth 27, 31, 183, 193, 198, 204 "Cotton weaving" exayaina- tion questions 190 Counts, equivalents in other materials 50 Counts of beams 72 Counts ot yarn 40 Counts required for certain weights 28 Cumberboard loo Cut mark 78 Damp in yarn ... Decimal fractions Design paper ... Dhooty marker Dhooty wages ... Diameter ••• 53 ... 179 ... 98 ... 80 ... 120 .. 67 205 206 INDEX. Diameters of yams 52, 203 Discounts 54 Dividend of loom 92 Double yarn calculations 45, 186, 195 Drawing-in wages 108 Driving and driven vi^heels ... 60 Driving ropes 65 Ends, to obtain number of 14, 188 Engine calculations 170 Examination questions and an- swers 182 Examples, wage calculations 121, 122, 127, 135 Folded yarns 45, 186, 195 Foreign weights, measures, and moneys 88 Fractions 178 French cotton counts 48 Fustian reed counts .., ... 161 Gears for taking-up motions 93, 96, 138 Gross 47 Hank, definition 39 Heald calculations 160, 166, 190, 196 Horse-power 65, 171 Indicated horse-power ... ij2 Intermediate wheels ... 88, 183 Jacquard calculations 98 Jute yarn counts 49 Lea, definition of 39 Length of warp 16 Length of yarn in cloth 28 Leverage 89 Linen counts 49 Lists of weaving wages iio Loom calculations 83, 187, 190, 192, 200 Looming wages 107 Looms per horse-power 173 PAGE Mangle wheels 63 Marking motion 78 Measures, foreign 57 Measuring motion, beaming .. . 75 Mensuration 66 Metrical system of yarn counts 48 Metrical weights and measures 55 Milling up 16, 18 Moneys, foreign 58 Nelson list of wages (fancy goods) 141 Nominal horse-power Oldham velvet list Percentage Pickles' motion Picks per quarter inch Picks to the round ... Pick table Pirn winding wages Power of straps Preston list of wages Preston reed counts Proportion ... 172 ... 149 70, 177 93 91 86 96 104 64 135 162 176 Quoting for cloth 27, 31, 183, 193, 198, 204 Radcliffe list of wages ... 141 Rating goods 27, 31, 183, 193, 198, 204 Reed calculations 160 Reed for striped cloth 165 Reed space 167 Reeds to be used 169 Right angle 68 Rope driving 65 Safety valves 174 Scotch reed counts 161 Scotch system of calculating weights 22 Scotch yarn counts 47 Selvage ends 15 Set of beams 71 Shots on the glass ... ... 22, 98 ADVERTISEMENTS. 207 MILES PLATTING REED, HEALD, AND WIRE WORKS, VARLEY STREET, OLDHAM ROAD, MANCHESTER. ENRY TETLOW, MAKER OF ALL KINDS OF REEDS AND HEALDS ; ALSO MAKER OF SELF-ACTING LOOP AND MAIL MEALD MACHINES, SELF-ACTING REED MACHINE, 300 DENT PER MINUTE, PATENT SPACING MOTION FOR HEALD MACHINE, HEALD BRUSHING MACHINES FOR VARNISHING OR SIZING, WIRE POLISHING AND ROLLING MACHINES, DENT CUTTING MACHINES, STEAM CHEST FOR HEATING PITCH OR YARNISH, POLISHED WIRE ON RIMS, IN COILS, OR CUT DENTS, REED ENDS, REED RIBS, REED BAND AND HEALD YARN. ALL ORDERS PUNCTUALLY ATTENDED TO. Doubler of all kinds of Cotton Heald Yarn. 208 INDEX. PAGE Side tappets S6 Signs and abbreviations ex- plained 175 Silk counts 48 Size of shed 90 Size, percentage of 82 Skein system yarn counts ... 50 Slashing or taping calculations 78 Slashing or taping length ... 16 Slashing or taping Vi^age list ... 106 Slide rule 181 Slip _ 84 Small samples, price from ... 29 Spaced healds 166 Specifications, machinery 69, 75, 78 Speed calculations ... 59, 8^, 192 Speed of loom from engine ... S^ Speed of tappets 85 Speeds and wheels, different picks to the round 86 Square root 180 Standard cloths 33 Steam-engine calculations ... 170 Stockport reed counts 160 Strain on warp 202 Straps 64 Strength of yarn 52 Stripe cloth, weight of yarn in 23, 25, 189, 193 Stud wheel 79 Summary of reed counts used 162 Symmetry of cloth ... 33, 193, 203 Tables of money, weights, and measures 55 Table yarn measurements ... 39 Table yarn weights 39 Take-up motion 90, 97, 187, 191 Taping calculations 78 Taping wages list 106 Tape length 16 Tappet speeds 85 Testijig yarn 51 PAGE Three-fold yarn 46 Tin roller wheel, to obtain ... 79 Toothed wheels 60 Turns of twist 52 Twisters 15 Twist required 13,22,25 Two-fold yarn 45 Uniform weaving wages list 1 10 Uptaking motion ... 97 Velvet wage list ... 149 Wage calculations . ... lOI Warp, ends in a . ... 14 Warping calculations • 70, 73 Warping wages • ••• 105 Warp strain . ... 202 Waste percentage . ... 70 "Weaving and designing" questions 183 Weaving wages 108 Weft weight required 20, 23, 26 Weight of piece from small sample 29 Weight of beams 77 Weight of weft required 20, 23, 26 Weight of twist required 13, 22, 25 Wheels for tape frame 80 Wheels for tappets, to find ... 85 Wheels to be used for picks 92, 96 Winding calculations 69 Winding wages 102 Woodcroft tappets 85 Wool, grist of 50 Worm wheels 62 Worsted counts 48 Wrap, length of 70 Wrapping yarn 40 Wrapping table 42 Yarn calculations 39 Yarn, measurement table ... 39 Yarn, weight table 39 PRINTED BY BALLANTYNE, HANSON AND CO. EDINBURGH AND LONDON. ADVERTISEMENTS. 209 FLEMING'S "STANDARD" OAK TANNED MAIN DRIVING BANDS. Any Width or Thickness. Delivered at a Day's Notice if Required. BELTING FOR ALL REQUIREMENTS. Ordinary Widths in Stock. LOOM BELTING. Extra Quality. SUPERIOR HAIR BELTING. COTTON BELTING. LINK BELTING. LACES. PICKERS, PICKING BANDS. MILL LEATHERS, MULE BELTING. A Speciality. JOINTS CEMENTED ONLY, AND GUARANTEED EQUAL TO ANY BELTING OF THIS DESCRIPTION IN THE MARKET. Apply for Catalogue, Contains Valuable Commercial Information. Post free. BELTING. Comprising Firms established 100 years. FLEMING, BIRKBY & GOODALL, LIM^. :ffieltlng, dc„ /nbanufacturer^, WEST GROVE MILL, HALIFAX, ENGLAND. BRANCHES AT LIVERSEDGE AND BRIGHOUSE, YORKS. 2IO ADVERTISEMENTS. ASA LEES & CO., Limited, Sobo Sxon Morfes, OLDHAM. Address for Telegrams— h^S^K OLDHAM. Conetructore of ALL KINDS OF jWACHINERY for Preparing, Spinning & I^/^itbling COTTON AND WOOL ADVERTISEMENTS. 211 THOMAS WESTBY & SONS. ESTABLISHED 1858. GLEBE STREET HEALD, REED, AND WIRE WORKS, GREAT HARWOOD. VENTILATING ENGINEERS, &c. Telephono No. 613. I COTTON HEALD, I YARN DOUBLERS, &c. Telegrams— "Westby, Great Harwood." SOLE MAKERS OF THE PATENT LANt>.5HIRE AIR PROPELLER. Perfect ventilation without draft ; approved by K H. Osborn, Esq., and W. Williams, Esq., H.M. Inspectors of Factories. SPECIALITY in FINE HEALDS AND REEDS. Also for Export. 212 ADVERTISEMENTS. Established 1823. BOBBINS, TUBES, CREEL SKEWERS, & SHUTTLES. WILSON BROTHERS Ltd., CORNHOLME MILLS, TODMORDEN. Telegrams— "Wilsons, Cornholme." Telephone No. 7. 16 Highest Awards for Excellence of Exhibits. ORIGINAL INVENTORS AND MAKERS OF STEEL AND BRASS-PLATED BOBBINS and TUBES. ■♦♦♦♦♦»♦»♦♦♦♦»♦♦♦♦♦♦♦♦♦♦»♦»»♦♦♦ SHUTTLES, For Cop or Bobbin, made under the supervision of a trained and experienced manager. They are made from Persian Boxwood and the best American blocks, carefully seasoned. Shuttle Pegs, Shuttle Springs, Beam Wedges, Creel Pegs, Creel Steps, Picking Band Pegs, Pirns with Brass Tips, and Picking Sticks. Shuttle Pegs neatly repaired. WARPING and WINDING BOBBINS, Fitted with Wilson Brothers' Patent Flange BINDERS, Cannot open at the Joints, and are so made that it is almost impossible for them to be broken with ordinary usage. Strong, light, and durable. Enamelled Wood Bobbins for Conditioning Yarn. By a new patent American process Wood Bobbins are completely covered, both inside and outside, with hardened Enamel, that will not crack or become adhesive. They effectually resist the action of steam and moisture required in conditioning. Impossible to warp or twist from repeated steaming. References to users in Great Britain, America, and the Continent. Office and Show Rooms-U MARKET PLACE, MANCHESTER. ADVERTISEMENTS. 213 HEALEY BROS., Ltd., CARTRIDGE ^VORKS, HEYWOOD, And 19 Cannon Street, Manchester. ■♦♦♦♦♦♦♦«»»♦»»»»♦♦♦♦♦♦♦♦♦♦ MANUFACTURERS OF COTTON jVIAIN DRIVING )?OPES FOR COTTON AND WOOLLEN MLLLS, ETC. ALSO MAKERS OF HEMP TWINES and LOOM CORDS. SCROLL, RIM, AND SPINDLE BAND. Also TUBULAR BAND FOR RING FRAMES. Works — HEYWOOD, BROADFIELD, and OLDHAM. ♦ ♦♦♦♦♦♦»♦♦♦»♦♦♦»♦♦»»♦♦♦♦♦■ Telegraphic Addresses :— "Improve," Manchester, OR "Tow," HEYWOOD. ABC CouE (Fourth Edition) used. Telephones :— 153 Manchester. 103 Heywood. 2 14 ADVERTISEMENTS. HOWARD & BULLOUGH, LIMITED, ACCRINGTON (England), MAKERS OF Cotton Spinning and Manufacturing MACHINERY Of the most modern and approved principle, with all Brackets and Seatings milled by Special Machinery to Standard Templets. d-I^^JIirfl^S^^S^.'^.WJ^.'SJ'WiJ^^^W SPECIALITIES: PATENT HOPPER FEED FOR COTTON OPENERS. ANGLO-AMERICAN OPENERS AND SCUTCHERS. New Patent REVOLVING FLAT CARDING ENGINE, With rigid bend — no Flats — 43 working. Over 6000 Cards at work. DRAWING FRAMES, with Electric Stop Motion. Reliable — quick — not liable to get out of order. Already applied to over 35>000 deliveries. SLUBBING, INTERMEDIATE, & ROVING FRAMES, With Patent Differential Motion, Patent Cone Lifting Motion, Patent Cap Bars, and Patent Method of Balancing Top Rail, &c. &c. We have applied Electric Stop Motion to over 200,000 Intermediate Spindles with marked success for the prevention of " Single." RING SPINNING FRAME. THE LARGEST MAKERS IN THE WORLD. Over 4,500,000 Spindles supplied. RING WEFT FRAMES. References given on application, comprising leading and extensive mills where the Weft Ring has entirely displaced the Mule. ADVERTISEMENTS. 2 I 5 HOWARD ^^ BULLOUGH, Limited— Continued. RING DOUBLING FRAMES, Made on either the English or Scotch System, For Ordinary Doubling or for Sewing Cottons. COMPOUJ<D 8IZIJ<G jWACHINES. One 9 ft. Cavity Cylinder and 3 to 7 Fans. Howard & Bulloug-h's Aip-Drying- and Cylinder Sizing Machines of all sizes from 3 ft. to 9 ft., in Tin and Copper, with some or all of the following improvements, are found in all countries wherever Cotton Manufacturing is carried on. Hitehon's Patent Safety Compound Friction Motion for coarse or fine counts. Hitehon's Patent "Self-Traversing"" Yarn Beam Pressor. Hitehon's Patent "Self-Expanding and Contracting" Double Roller Yarn Beam Presser. Hitehon's Patent Adjustable Measuring Indicator, will mark any length of yarn from J to 200 yards or metres (requires no change wheels). Hitehon's Patent "Self-Regulating" High Pressure Size Boiler. Hitehon's Patent Yarn Relieving Motion for size box. New Patent Light Running Beaming Machine ("Im- proved Singleton"), with Patent Self-Stopping Measuring Motion, adjustable for any number of yards. This machine has so rapidly superseded all others — our own six patents included— as to be practically the only one recog'nised in the market. HOWARD & BULLOUGH, Limited, ACCRINGTON, LANCASHIRE. Accrington is distant from Manchester only 20 miles. Frequent trains run daily from Victoria or Salford Stations on the Lancashire and Yorkshire Railway. 2l6 ADVERTISEMENTS. The only Weekly Textile Journal. The Textile Mercury, A Representative Weekly Journal for Manufacturers, Spinners, Machinists, Bleachers, Colourists, and Merchants, in all Branches of the Textile Industries, With which is Incorporated ''THE HOSIERY AND LACE TRADES REVIEW." THE OFFICIAL ORGAN OF THE SILK ASSOCIATION OF GREAT BRITAIN AND IRELAND. PUBLISHED EVERY SATURDAY. PRICE THREEPENCE. Home Subscription, 12s. 6d. Foreign Countries, 15s. per annum, post free. May be ordered of any Newsagent, or direct from jyiARSDEN & CO., Publishers ENGRAVERS AND PRINTERS, Carr Street, Blackfriars, K^x. .x?X MANCHESTER. NATIONAL TELEPHONE, No. 2080. Machinists' and Engineers' Catalogues, Circulars, etc., and all Descriptions of Commercial and General Printing produced in the Finest Style. ADVERTISEMENTS. 2 1 7 GEORGE ORME & CO., ATLAS METER WORKS, OLDHAM (England). Telegraphic Address: "ORME, OLDHAM." National Telephone, No. 93. Orme's Patent Indicators for Looms. This Indicator is fixed upon the Tappet Shaft, and registers up to 1,000,000 revolutions or 2,000,000 picks. Orme's Patent Indicators for Mules; Roving, Drawing, and Ring Frames ; Engine Counters, &c. Full Illustrated Lists on application. Crown Zvo. Paper Covers. One Shilling. WeavlDg Examination Questions. Contents. — Six Years' Weaving and Pattern Designing . Questions. — Lists of Examiners, Rules of Examina- tion, &c. — The Syllabus for Study in each of the following Subjects : — Woollen and Worsted Cloth Weaving, Cotton Weaving, Linen Weaving, Silk Weaving, and Jute Weaving, Post Free^ is. id. 0. P. BROOKS, TRAFALGAR HOUSE, HARPURHEY, MANCHESTER. 2l8 ADVERTISEMENTS. LUPTON BROS., ROLLER AND TEMPLE MAKERS, IRON AND BRASS FOUNDERS, &c., GRANGE IRONWORKS (AND SCAITCLIFFE FOUNDRY), ACCRINGTON. MAKERS OF TROUGH AND ROLLER TEMPLES, With Patent Baek-Edg'e, which weave the cloth within two inches of reed space of loom. Makers of all Kinds of One, Two, or Three ROLLER SIDE TEMPLES, With iron or brass rollers, and with inserted Steel teeth ; also supplied with latest patented improvements, having the covers made in iron, brass, or steel. Makers of all Kinds of Expansion and Segment RING TEMPLES, with patented improvements and adjustments for weaving strong or light goods equally well. SPECIAL SOFT CASTINGS. WEAVERS' AND WARPERS' FLANGES, LOOM ACCESSORIES, &c. Perforated Iron, Steel, or Brass Strips, and Iron or Zinc Sheets, &c. &e. DRAWINGS AND ESTIMATES ON APPLICATION. ADVERTISEMENTS. 2T9 THE PRJCTICAL MONTHLY JOURNIL _ TEXTILE IMDDSTRIES. A^ ' lll,.,lllli..,lllli..,illli...lllli...i'lli...l|llr..,il Illi..ill|j.,ill Illi..,|llli.,lllll,..lllll...'llll,..lllll,..lllll...lllll...lll Ill Ill„.lllll. Ili...llll In. .illll...lllll...llll' Published on the 18th day of each month. /(^/ ^ PRICE Sixpence. POST FREE, 9s. per annum. ARTICLES, BRIGHT AND ACCURATE, WRITTEN BY PRACTICAL EXPERTS, In Every Department. !''■ ''II'' ■'"' ''li' 'il'" ''II 1'' ''111'' 'III''' 'i||i''''i|i' ''ll' ■•'i|i'-'i||P-N||r'i,|||i"i||||i-nj;c.||||,".,,||,- .||||,",|||, ||ir'.i,||i'-i|)i',||||i-i|(|i"H||i'-'i|KP-iij|r'(|(irH|(|ri||| JOHN HEYWOOD, 2 AMEN CORNER, LONDON, E.G. ; and RIDGEFIELD, MANCHESTER. 220 ADVERTISEMENTS. LAYCOCKS' Picking Bands Are UNSURPASSED For DURABILITY ♦♦♦♦♦♦♦♦♦♦♦♦♦♦♦♦♦♦♦♦ SEND FOR POST SAMPLE AND PRICES TO WM. LAYCOCK & SONS, banners anb Cunners, KEIGHLEY. ADVERTISEMENTS. 221 Telegraphic Address; "Pi.atts, Oldham." PLATT BROS. & CO. LD., MACHINISTS, HARTFORD WORKS, OLDHAM. Makers of the Following Machinery : — IMPROVED C OTTON BAL E BREAKERS. PATENT "EXHAUST" OPENERS. SCUTCHERS, WITH PATENT PEDAL REGULATORS. PATENT REVOLVING SELF-STRIPPING FLAT CARDING ENGINES. Carding Engines for Cotton, Wool, Worsted, Silk and Waste. PATENT CONDENSERS FOR WOOL, COTTON AND COTTON WASTE. COMBING, DRAWING, 8LUBBING, INTERMEDIATE AND ROVING FRAMES. PATENT SELF-ACTING MULES AND TWINERS For Spinning and Doubling Cotton, Cotton Waste, Woollen, Worsted, Silk and Silk Waste. RING SPINNING FRAMES FOR WARP AND WEFT. RING DOUBLING FRAMES FOR COTTON, WOOLLEN, WO RSTED, AND SI LK. IMPROVED MACHINERY FOR PREPARING, COMBING, ROVING AND SPINNING WORSTED On both the French and Bradford Systems. Machinery lor Preparing and Spinning Barchant or Waste Yarns. PREPARING MACHINERY FOR WEAVING, Including Winding, Warping, Sizing, Beaming, and Dressing Machines for Cotton, Linen, and Jute Yarns, and Starching Machines for Carpet Yarns. POWER LOOMS, For Plain and Fancy Cloths, for Cotton, Linen, Woollen, Worsted, Jute, &c. 222 ADVERTISEMENTS. Lambeth Cotton Ropes ■/ / lib.6oz. ■-: Fo.Ui-'.Croove. ■ llb.l4oz'. ■VyElGHTtjFlYPafROPE ; For li.N. GROOVE. ' ■ 2]b 5oz. : IAa/eichtofIy^ofRope Foaf^N GROOVE They are firmly made and very solid, containing more actual yarn for a given diameter than is usual ; and being made from pure Egyptian Throstle Yarn, without any weighting material, are light in weight. Also DRUM, RIM, SCROLL, SPINDLE, RING SPINDLE, TAPE, and TUBULAR BANDINGS to any deseription for Cotton Mills. THE LAMBETH COTTON ROPES are of unique design and construction, superseding all other Cotton Ropes for Main Driving. Tension and Friction accurately -measured for and provided against, and the Ropes fitted exactly to the working part of the grooves of the pulley. A LARGE STOCK of ALL SIZES KEPT, to meet Urgent Orders. NOTE.— These Ropes are made at my works alone, and are only genuine when bearing my Registered Trade Mark. THOMAS HART, BLACKBURN. ESTABLISHED 1789. Telephone, No. 10. Telegraphic Address : " HART, BLACKBURN." (ABC Code used.) ADVERTISEMENTS. 223 JAMES WALM8LEY & SONS (ESTABLISHED 1848), Leather Curriers, Strapping Manufacturers, and Mill Furnisliers Works:— AVENUE PARADE, ACCRINGTON. MAKERS OF ALL KINDS OF ROLLER SKINS, SINGLE LEATHER BELTING, DOUBLE LEATHER BELTING, GREEN PICKING BANDS, OAK-TANNED PICKING BANDS, LEATHER PICKERS, LACES, BUFFALO SKIPS AND PICKERS, LOOM FITTINGS, &c. And all other kinds of LEATHER GOODS used in THE Spinning and Manufacturing of Cotton, Woollen, Silk, or Jute. Telegrams — " Abbey, Accrington." Telephone — No. 23. ■'— .i. 'i.'-'^J ^^[^3 ■ - ^-^ ...1^::>^^ SOUTHEASTERN MASSACHUSETTS UNIVERSITY TS1490.B78 1893 Weaving calculations 3 E^^E ODnfl flT3 7 V- * '-."At "1 -•• ' ,N .'• '^ v# ii'.-.V- -• '1 ' - . -• • •■il Kicir -^m ^ '^^^ ^ :^ ■(%- "•*"»"<^ '<*::-^. p.. >*T,^- ■.-^.^^;^^<^' •c;^'\\ »Ai u