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THE  SHOPS                                 235
Illustrations of Shops.
i. Messrs. David Brown & Sons (Huddfd.), Ltd., Lockwood, Huddersfield.__
This is a large works, occupied solely in the production of gear wheels.
The extensive shops are laid out on the ground floor exclusively, and all are
arranged in parallel. The works are self-contained, including pattern-shop,
foundry, smithy, and hardening-shop. There is a heavy machine-shop, and
a heavy erecting-shop. The principal sectional departments are: the raw
material stores, the tool stores, the cutting-off, the light fitting, and milling,
automatic, double helical and bevel gear, spur, worm, and spiral departments.
Also heavy and light turning, planing, boring, drilling, capstan lathe, and
grinding departments, the tool-room and inspection. The bays range from
120 to 310 ft. in length. They are served with overhead electric travelling
cranes. Skylights in ridge roofs give ample light, and arc lamps provide
artificial illumination. The machines are all driven electrically, the smaller
in groups, the larger with separate motors.
Fig. 62 shows the heavy-turning shop. Heavy boring and turning mills
are seen on the right, and a number of chucking lathes .on the left, served
with an overhead runway and pulley blocks. Fig. 63 is a view taken in the
spur gear-cutting department. A catholic selection of machines is apparent,
They include the Gould & Eberhardt, the Brown & Sharpe, the Sunderland,
and the Fellows gear generators. Much of the work is of a massive nature,
requiring the service of the overhead travelling crane. Fig. 64 is the shop
in which worm and spiral gears are milled and tested. The machines used
were designed and built by the firm. The machines for grinding worms
after cutting and hardening are also made by Messrs. Brown. The heads
of the grinding wheels are adjustable to suit the gear angles. In the general
grinding-shop, cylindrical and vertical spindle machines are installed, and
trays disposed down the centre hold the work.
2. Messrs. A. Harper, Sons, & Bean, Ltd., Dudley, Worcestershire.—
The works of this firm at Tipton are built for the construction of auto-
mobiles, the various departments of which are illustrated by the photographs
following. Precision tools are made at Dudley, and drop forgings and
pressings at Smethwick. The foundry is at Tipton.
Fig. 65 is a view in the milling department. An Ingersoll machine
occupying the centre of the shop is dealing with a row of crank cases. It is
machining the timing cover face, the cylinder face, and the ends of the feet
simultaneously. Two vertical machines on the left mill the sump face,
and the magneto, starter, and lighting faces respectively. In the foreground
at the right is seen the milling of the vertical face for the magneto cradle.
These machines are laid out in line, arranged for each operation in sequence,
and the component parts are passed along to the machines on a roller type
of conveyor, with ball-bearings, occupying the centre of the shop.
Fig. 66 shows a line of seven multiple spindle " Natco " (National Auto-
matic Tool Company) drilling-machines. The third, fifth, and seventh—the