IMPROVEMENTS IN CARTRIDGES
Year: 1884

page_text: COMPLETE SPECIFICATION.
I, CHARLES STUART BAILEY, of N° 8 Barnard's Inn, Holborn, in the County of
Middlesex, Civil Engineer, do hereby declare the nature of my Invention for
"IMPROVEMENTS IN CARTRIDGES." and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement :-
In the Specification of former Letters Patent granted to me the 1* day of
February 1882 N° 496 is described a construction of central fire cartridge designed
for use in hammerless guns and so contrived as to prevent entry into their locks of
gases escaping from around the percussion caps of the cartridges.
According to that Invention the said object is attained by enclosing the whole of
the base of the cartridge with an outer cup or gas-check, which construction
prevents the cartridge being easily reloaded.
Now the object of my present Invention is to produce a perfectly gas tight
cartridge capable of being easily reloaded if desired and which shall be equally well
adapted for hammerless guns.
For this purpose I provide an outer cup or gas-check that does not enclose the
whole of the base of the cartridge but is sufficiently large in diameter to perfectly
enclose the percussion cap within the cap chamber and to extend over a part of the
base of the cartridge in which position it is secured by embedding its sides or
edges in the base of the cartridge.
Fig. 1 illustrates in central longitudinal section a "built up" form of cartridge
having my present Invention applied to it. As is usual this cartridge comprises the
following several metal and paper parts-viz., a paper tube A. a base cup B, a
paper packing C, and a flanged cap chamber D, containing the cap E and anvil G.
According to my Invention the open end or mouth of the cap chamber Dis
covered with a cup or gas check H formed to fit over and against it without
however enclosing the whole of the base of the cartridge.
In the present
arrangement as will be seen the edges of the cup or gas-check are bent round and
under the flange of the cap chamber so as to completely enclose the crown of the
percussion cap. The cap chamber so covered is pressed into its usual position in
the cartridge as shown.
Fig. 2 is a similar view illustrating the application of my Invention in a "solid"
form of cartridge made of one piece. In this case the cap E and part of the base
of the cartridge is covered with the cup or gas check H. the periphery of which is
enclosed and secured within a corresponding annular groove previously formed in
the base of the cartridge to take it as shewn.

page_text: It is to be noted that excepting as respects the cups or gas checks the above
described cartridges are of known construction.
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,―
In a cartridge the use of a cup or gas check forming a gas-tight closure to the
chamber containing the cap, but extending over only a part of the base of
the cartridge as hereinabove described with reference to and illustrated in the
accompanying Drawings.
Dated thi. 2th 1.
1004