Improvements in the Manufacture of Cartridge Cases.
Year: 1898

page_text: Date of Application, 13th Sept., 1898-Accepted, 15th Oct., 1898
COMPLETE SPECIFICATION.
[Communicated from abroad by EDWIN HENRY BROWN, of the Borough of Man-
hattan, City, County, and State of New York, United States of America,
Councillor-at-law.]
Improvements in the Manufacture of Cartridge Cases.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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 improvement involves the use of two tubular parts, each closed at the
rear end and made of such relative sizes that one may be inserted in the other.
The outer part is advantageously provided with an internal groove or recess
near its rear closed end, and the inner part is constructed so that its rear closed
end will originally dish forwardly. After insertion of the inner part its dished
end will be more or less flattened to force its corner portion towards the outer
part in which it is inserted. The space between the two parts is sufficient to
accommodate a cartridge shell body, and the outward bending of the corner
portion of the inner part will force the body outwardly against the outer part,
thus forming a very secure joint between the two parts and the body.
In the accompanying drawing, Figure 1 is a central longitudinal section of
a cartridge shell embodying my improvement. Figure 2 is a central longi-
tudinal section of the body of the shell. Figure 3 is a central longitudinal sec-
tion of the outer part into which the body is fitted. Figure 4 is a central longi-
tudinal section of the inner part in its original condition.
Similar letters of reference designate corresponding parts in all the figures.
A designates the body of the cartridge shell. It may be made of paper or
other suitable material, and in the usual form.
61, 68 are two parts of tubular form, each of which is closed at one end. The
outer part 6 is advantageously provided internally with a circumferential
groove b³ near its closed end. It may have the usual external bead 6. The inner
part 68, in its original condition, is constructed with its closed end or bottom
dished forwardly as shown in Fig. 4.
The parts b¹, are of such relative size that the body A of the cartridge shell
may be accommodated between them. After the body and the inner part 12
have been inserted within the outer part b', the closed end or bottom of the inner
part 6s will be more or less flattened by means of a suitable punch or implement
inserted within the body A. The flattening of the bottom of the part 62 will
force outwardly the corner, or, in other words, that portion of the said part b²
which is at the junction of the side and the closed end or bottom, as may be
fully understood by reference to Figure 1. Thus, the body A will be bent out-
wardly into the groove 63 of the outer part b₁, and a very secure union of all
the elements of the cartridge shell will be produced.

page_text: The parts b1, b may have a central chamber 65 for a cap or fulminate, and the
shell may be loaded in any desired manner, and with any suitable material.
By the term cartridge shell, I mean not only what are most commonly known
by that name, but similar structures for any ordnance.
Having now particularly described and ascertained the nature of this in-
vention and in what manner the same is to be performed, as communicated to
me by my foreign correspondent, I declare that what I claim is;-
The process of making a cartridge shell, which consists in inserting a cartridge
body into an outer tubular part advantageously having an internal groove, in
also inserting and inside of said body a smaller tubular part having a dished
rear end, and in subsequently flattening the inwardly dished end of the inner
tubular part, thereby forcing the corner of the inner tubular part outward and
clamping the cartridge body, substantially as specified.
Dated this 13th September 1898
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.