Year: 1888

page_text: Date of Application, 25th Sept., 1888
Specification Accepted, 2nd Nov., 1888
I, GEORGE WASHINGTON JACKSON, of 614 Federal Street, in the City and County
of Philadelphia, State of Pennsylvania, United States of America, Carpenter, do
hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:
This Invention consists of a non-metallic cartridge shell having a detachable metal
breech. The object of my Invention is that the metal cap which forms the breech
can be retained and used any number of times, as well as to improve the shooting
qualities of non-metallic shells, all of which I will now proceed to describe.
Of the accompanying drawings forming part of this specification, Fig. 1 represents
a sectional side view of my Improved Shell; Fig. 2 represents a flanged metal cap;
Fig. 3 represents a light metal ring, corrugated to form a thread; and Fig. 4 represents
a complete shell.
In carrying out my Invention I take the tube A, made of paper or like material,
crimping the end B.; then I insert the threaded ring C. into tube A against the
crimped end B.; then with a creaser made for the purpose, turned over the end D. of
tube A, containing the threaded ring C., it is forced into the grooves E., of the
ring C., forming the thread F. on the end of tube A. I then take the cap G., the
collar H. of which is corrugated to form a thread to correspond with thread on
the end D. of tube A., and screw it on over the threaded end D. of tube A., forcing
the tube tightly into the grooves of the collar H., and ring C, and drawing the
crimped end B., and cap G., together thereby forming a non-metallic shell with a
perfectly tight metal breech; the ring C. being made of light metal, such as tin or
brass, it will expand somewhat when the explosion takes place, thereby making it
impossible for the gases to escape through the breech. The notches I., in the flange
of cap G., is for inserting a key or wrench, when necessary, for tightening or loosen -
ing cap. The flanged edge J., being milled also, enables the cap to be turned on and
off without a key or wrench, if properly made. The collar H., of cap G., and the
ring C., having a corrugated thread allows them to be made of lighter metal and have
the required strength, and also prevents the collar H., of cap G., from sticking in the
breech of the gun-barrel, if dirty.

page_text: I am aware that I can use a solid breech made of any suitable material threaded on
the side, but I prefer the ring, as it would be necessary to have the solid breech and
cap drawn tightly together, while with the ring it is only necessary that the cap
should catch several threads of ring.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. A non-metallic tube with one end crimped over a corrugated metal ring,
inserted into said end of tube; the end of tube forced into the grooves of ring which
forms a thread on end of tube. A solid flanged cap, notched and milled on edge of
flange, the collar of said cap being corrugated to form a thread to correspond with
thread on end of tube, so that it can be screwed on over said threaded end of tube,
forcing it into the grooves of metal ring, thereby forming a non-metallic shell with a
perfectly tight-metal breech, which can be detached when the tube becomes useless,
and reused any number of times, all substantially as set forth.
Dated this 25th day of September 1888.
HORN & SON,
Applicant's Agents.