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United States Patent Office.


Specification forming part of Letters Patent No. 654, dated March 
24, 1838.

To all whom it may concern:

Be it known that I, George W. Dobbin, of the city of Baltimore, 
in the State of Maryland, have invented a new and useful machine 
for measuring the load of shot for guns, and for charging guns 
therewith, by which machine the quantity of the charge is 
rendered uniform, and the charge is emptied at once into the gun 
with the greatest expedition and without the loss of a single 
pellet; and I do hereby declare that the following is a full and 
exact description thereof, reference being had to the drawing 
which accompanies and makes a part of this specification, viz:

To the mouth of that description of bag which is usually 
suspended at the right side by a strap passing over the left 
shoulder, I attach a tube, A, (see figure,) of any convenient 
size�about, for example, say nine-sixteenths of an inch in 
diameter and one inch long�bent at an obtuse angle, as in the 
drawing, (or curved, as is indicated by dotted lines in the same 
figure,) and joined to the middle of another tube, B, of the same 
or larger dimensions�say three-fourths of an inch in diameter�and 
a communication is opened between the two tubes as large as the 
smaller tube, A, will admit of. The larger tube, B, may be three 
inches or more in length and closed at the end C, either 
permanently or by a cap or plug screwed on or in said end, and 
the other end, D, contracted to a size convenient for insertion 
into the muzzle of a gun. At about the middle of the larger tube, 
B, and at right angles with the direction in which it is joined 
by the smaller tube, A, is placed an upright�say three-eighths of 
an inch high�in a longitudinal slot in which upright works a 
lever, the fulcrum being a pin or screw passing through the 
upright and lever. To one end of this lever is attached a gate or 
slide which works in a slot cut transversely in the tube B at 
such distance from the junction of the tube A with the tube B as 
to contain in the interval the desired charge of shot. The other 
end of the lever is kept elevated, and the gate kept thus shut 
down by a spring, in the manner long known and commonly used upon 
shot-chargers known by the name of "lever-chargers."

The operation of the apparatus may be explained thus: The bag or 
pouch is suspended at the right side by a strap passing in the 
usual way over the left shoulder, and the bag, with the charger 
attached, hangs downward. The shot then pass from the bag and 
fill the tube A and part of the tube B as high as the dotted line 
E. In loading the gun the mouth D of the charger is inserted into 
the muzzle of the gun, and the shot by their own gravity fall 
into the charger, so as to fill the space between the gate and 
the opening from the tube B into the tube A as high as the dotted 
line, the rest passing off into the body of the bag. When the 
gate, therefore, is raised by pressing the upper end of the 
lever, the charge of shot runs into the gun without the loss of a 
single pellet, and upon the bag's falling to the side of the 
shooter it is instantly ready for use again.

The quantity of the charge may be enlarged or diminished by 
increasing the number of slots in the tube B and moving the gate 
so as to enlarge or diminish the distance between the gate and 
the tube A.

The tube A may be joined to the bag, either permanently or by a 
screw or other mode, so that it can be removed in order to fill 
the bag with shot; but if it be joined permanently, then the end 
C of the tube B should be closed by a screw-cap, when the bag may 
be filled by removing the cap.

The machine may be made of brass, copper, German silver, or any 
metal or composition suited to the purpose.

I do not wish to be considered as confining myself by the 
drawings and description here given to this form of the 
apparatus, as the same principle of action may be used under 
various modifications of form and yet remain essentially the 
same; but

I claim as my invention and intend to secure by Letters Patent�

1. The mode of measuring the charge of shot by their own gravity 
in such way that all except the quantity requisite to constitute 
the charge shall run off and be separated from the charge.

2. The mode above described of discharging the shot at once into 
the barrel of the gun, in connection with the application of the 
principle above mentioned.

The lever and gate I do not claim, the same having been long 
known and used,


Witnesses: Wm. A. Talbott, David Hoffman, UNITED STATES PATENT