Improvements in Cartridges.
Year: 1892

page_text: Date of Application, 2nd July, 1892
Complete Specification Left, 25th Mar., 1893—Accepted, 27th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Cartridges.
I, WILLIAM CHALMERS BUSI, of No. 504 King Street, Wilmington,
Newcastle County, Delaware, United States of America, do hereby declare the
nature of this invention to be as follows:-
My invention consists of a cartridge-shell and a block or plug which interlocks
with the flange of said shell and has a convex-conical chamber terminating in
a narrow or greatly reduced vent, said block being compressed in the operation
of forming the chamber therein, whereby it is forced against the shell, which
action, with the interlocking feature, prevents the block from being blown out of
the shell.
The improved cartridge is composed of a main section, a breech-section and a
block therein, said block being primarily formed of wood, a coil or roll of paper,
or other material with a convex-conical chamber in the front end thereof, and a
narrow vent rearward therefrom for the passage of the fire to the explosive. On
the rear end of the block is a flange which enters the flange of the shell, thus
interlocking the block with the shell and preventing said block from being blown
out of the shell. The periphery of the block and the contiguous portion of the
shell are threaded or corrugated, thus interlocking the block with the shell and
providing an additional fastening for said block.
The primer plug is imbedded in the block and formed of hard material with a
threaded or corrugated periphery, the latter meshing or interlocking with the inner
periphery of the block, thus securely connecting said parts.
In manufacturing the cartridge the head section is placed on the barrel section
and the block as primarily formed is fitted into a shell, the rear portion of the
block being unflanged. The shell is then placed in a proper die or apparatus
and a proper implement inserted into the shell and driven or forced into the block,
thus forming the chamber. Meanwhile the die is manipulated so as to produce,
while the block is subjected to the chamber-forming operation, the flange on the
shell and also the flange on the block, the latter entering the former, when desired,
the corrugations are also formed thus firmly connecting the block with the shell,
it being also seen that the block is compressed and rendered dense and expanded,
so as to be forcibly driven against the inner faces of the sections of the shell,
thus more firmly uniting the two sections, and causing the holding action of the
block on the shell to be increased, the shell thus being reliable in service and
light in nature the convex conical chamber rendering greater effectiveness in
firing. As the primer-plug is interlocked with the block, as has been stated, it
being also somewhat of the form of two hemispherical pieces joined so as to leave
between them a neck, into which the material of the block enters, thus providing
additional security for the connection of the plug with the block, and affording a
solid support for the primer or cap.
Dated this 1st day of July 1899
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Cartridges.
I, WILLIAM CHALMERS BUSH, of No. 504 King Street, Wilmington,
Newcastle County, Delaware, United States of America, Inventor, 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:―
My invention consists of a cartridge-shell and a block or plug which interlocks
with the flange of said shell, and has a convex-conical chamber terminating in a
narrow or greatly reduced vent, said block being compressed in the operation of
forming the chamber therein, whereby it is forced against the shell, which action,
with the interlocking feature, prevents the block from being blown out of the
shell.
In the accompanying drawing I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figure 1 represents a side elevation of a block for the interior of a cartridge
embodying my invention.
Figure 2 represents a section thereof.
Figure 3 represents a section of the cartridge.
Figure 4 represents a section of another form of the cartridge.
Figure 5 represents a front end view of the block as removed from the shell.
Similar letters of reference indicate corresponding parts in the several figures.
A designates a cartridge-shell formed of the main section A', and the breech-
section A, and B designates the breech-block therein, said block being primarily
formed of wood, a coil or roll of paper, or other material as seen in Figure 1, with
a convex-conical chamber C in the front end thereof, and a narrow vent D
rearward therefrom for the passage of the fire to the explosive. On the rear end
of the block is a flange E, which enters the flange F of the shell, thus interlocking
the block with the shell and preventing said block from being blown out of the
shell. The periphery of the block and the contiguous portion of the shell are
threaded or corrugated, as at G G thus interlocking the block with the shell and
providing an additional fastening for said block.
H designates the primer-plug, the same being embedded in the block and formed
of hard material, with a threaded or corrugated periphery J, the latter meshing or
interlocking with the inner periphery of the block, thus securely connecting said
parts.
In manufacturing the cartridge the section A' is placed on the barrel section A',
and the block as primarily formed is fitted into a shell, the rear portion of the
block being unflanged, as shown in Figure 3. The shell is then placed in a proper
die or apparatus and a proper implement inserted into the shell and driven or
forced into the block, thus forming the chamber G.
Meanwhile the die is
manipulated so as to produce, while the block is subjected to the chamber-forming
operation, the flange F on the shell and also the flange E on the block, the latter
entering the former, as in Figure 3, when desired, the corrugations G, G' are also
formed, thus firmly connecting the block with the shell, it being also seen that the
block is compressed and rendered dense and expanded, so as to be forcibly driven
against the inner faces of the sections of the shell, thus more firmly uniting the two
sections, and causing the holding action of the block on the shell to be increased,
the shell thus being reliable in service and light in nature, the convex conical
chamber D rendering greater effectiveness in firing. As the primer-plug is inter-
locked with the block, as has been stated, it being also somewhat of the form of
two hemispherical pieces joined so as to leave between them the neck J¹,
which the material of the block enters, thus providing additional security for the
into

page_text: connection of the plug with the block, and affording a solid support for the primer
or cap.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what
I claim is
1. A block or plug for a cartridge, secured to the shell and formed with a
convex conical chamber and a communicating vent, substantially as described.
2. A cartridge having a shell consisting of a main and a breech section, the
latter being provided with a flanged rim, a block in said breech-section having a
convex, conical chamber in one end, a flange on one end within the flange of the
shell, and a primer-plug secured in said block, said parts being combined,
substantially as described.
Dated this 25th day of March 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.