An Improvement in Cartridges.
Year: 1891

page_text: Date of Application, 12th Mar., 1891-Accepted, 18th Apr., 1891
COMPLETE SPECIFICATION.
An Improvement in Cartridges.
I, RICHARD MORRIS, of Bennett Park, Blackheath, in the County of Kent,
Engineer, 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 :-
Many cartridges are necessarily made of length sufficient to fit the charge
chambers of existing fire arms, but often it happens that this length is more than
enough to hold the explosive charge which therefore can occupy only a portion of
the internal space.
When the unoccupied portion is left void except of air, it is
found that the shooting with such ammunition is more or less irregular.
My invention relates to means of remedying this defect, as I shall explain
referring to the accompanying drawings.
•
Fig. 1 is a longitudinal section of one form of cartridge according to my
invention.
The part E next the base of the cartridge is the explosive occupying only part
of the length of the interior. I fill up the rest of the space with cotton wool Cor
similar loose soft fibrous material packed only tight enough to keep the explosive E
in position. I fix the projectile l' in position by inserting it with the lubricating
wad W in the mouth of the cartridge shell against a small cannelure a which I form
in the neck, and after the projectile is inserted I force the lip of the cartridge into
a small cannelure formed in the projectile.
According to a modified arrangement I line the interior of the cartridge case
with some easily worked substance such as paper, pulp or asbestos putty in order
to fill up part of the internal space. Heretofore this has been done by putting
a paper cylinder into the cartridge case and then necking down the case beyond
it. According to my method I insert and fix the lining after the case has been
necked and even after it has been fired, so that I can utilise such cases for
miniature practice. I take a strip of paper or like material of a breadth equal
to the depth of the cartridge case from the base to the neck and having coated
the strip on both sides with shellac or other suitable varnish I roll it up while
the varnish is wet as indicated in Figs. 2 and 3 by R till I can slip it down the
mouth of the cartridge case which has been previously varnished.
When the rolled strip has passed beyond the neck N it partly unrolls and then
I fit it closely to the interior of the case as shown in Fig. 4 by first inserting
the smaller end of a tapered metal former to swell out the lining and then
inserting the larger end making the lining tube of uniform bore throughout as
shown in Fig. 4, the finished tube being of such thickness as to occupy all the
space not required for the explosive.
It is convenient in some cases to introduce the lining in two separate rolls the
one within the other reducing to very small dimensions the space for explosive. In
order to give better hold to the lining the case may be grooved with cannelures c
at two or three places as shown in Fig. 5.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I claim :—
1. A cartridge having the space within it void of explosive filled with cotton wool,
or its equivalent, and having the projectile secured by two cannelures, substantially
as described.

page_text: 2. The method of filling the space within a cartridge void of explosives by a
lining of rolled strip cemented together and to the case substantially as
described.
Dated this 19th day of March 1801
ABEL & IMRAY,
Agents for the Applicant.