Improvements in the Manufacture of Cartridges.
Year: 1888

page_text: Date of Application, 15th Oct., 1888
Complete Specification Left, 15th July, 1889-Accepted, 17th Aug., 1889
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Cartridges.
I, WILLIAM ELLICOTT, of 1, Broad Street, Launceston, in the county of Corn-
wall, Gun Dealer, do hereby declare the nature of this invention to be as follows:-
My invention relates to the manufacture of cases or shells for cartridges for military
and sporting guns and small arms.
Cartridges as heretofore constructed have usually had a flat base internally and in
some cases this base is below the level. of the flash hole, the result of this construction
being that the powder which lies in the angles at the junction of the wall and. base and
below the flash hole is imperfectly ignited and consequently wasted.
The object of my invention is to obviate this waste and to insure the perfect
ignition and combustion of the powder and to these ends it consists chiefly in con-
structing the base of the case at the inner side of the same approximately in the form
of an inverted cone the apex of which is at the flash hole.
In carrying out my invention I advantageously form the conical base integral
with a metal lining which is inserted within the case proper the said lining extending
above the level of the powder chamber. The material forming the conical base of
the lining preferably wholly or partially covers the top of the cap chamber in the base
proper.
The space between the conical base and the base proper is filled with paper pulp
asbestos or other suitable packing material.
In addition to the advantages above referred to my improved cartridge possesses
the following advantages, that is to say, the lateral strain is minimised as the recoil takes
place on the sloping base of the cartridge and the risk of the cartridge bursting at
the rim is reduced to a minimum.
The 17th day of October 1888
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Cartridges.
I, WILLIAM ELLICOTT, of 1, Broad Street, Launceston, in the county of Cornwall,
Gun dealer, 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 relates to the manufacture of cartridges, for military and sporting
guns and small arms, and especially to that class of cartridges having sloping or
inclined bases internally.
In the accompanying drawing, I show a longitudinal section of a cartridge provided
with my improvements.
a is the shell and is the head of the cartridge.
c is a solid drawn metal cup or lining having a curved base d which is formed
integral therewith. This cup is inserted within the case proper and extends up
to or above the level of the powder chamber. The base instead of being curved as
shown may be made conical.
The space between the base d and the head b is filled with paper-pulp, asbestos or
other suitable packing material e.
My improved cartridge possesses the following advantages, that is to say, the lateral
strain is minimised, as the recoil takes place on the sloping base of the cartridge, and

page_text: the risk of the cartridge bursting at the rim is reduced to a minimum; also the solid
base greatly reduces the liability of the gas escaping.
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:
In a cartridge, the use of a solid drawn metal cup for lining the base and walls, up
to or above the level of the powder chamber, substantially as described, and illustrated
in the accompanying drawing.
Data h 15th 1
T... 1000
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.