Appliance for Firing Cartridges for Ordnance and Machine Guns.
Year: 1886

page_text: Date of Application, 17th July, 1886.
Complete Left, 16th Apr., 1887.
Complete Accepted, 17th May, 1887.
[Communicated from abroad by WILHELM LORENZ, of No. 61, Krieg-Strasso,
Carlsruhe, Baden, in the German Empire, Manufacturing Engineer.]
Appliance for Firing Cartridges for Ordnance and Machine Guns.
I, CHARLES DENTON ABEL of No. 28 Southampton Buildings, Chancery Lane in
the County of Middlesex, Consulting Engineer and Patent Agent do hereby declare
the nature of the said invention to be as follows
This invention relates to cartridges for ordnance and machine-guns in which the
firing is effected by means of a percussion cap in a cap clamber on the metallic base
of the cartridge, and it consists in providing on the cap chamber a tubular extension
that passes centrally down the charge of the cartridge and is provided with one or
more openings, so that the flame from the percussion cap in passing down such tubular
extension will effect a more rapid ignition of the charge than with the ordinary
form of cap chamber.
The said tubular extension may be arranged in various ways; thus, according to
one arrangement it is formed in one piece with the cap chamber which is screwed or
otherwise fixed into the base of the cartridge, or according to another arrangement,
the cap chamber being formed in one with the cartridge base, the tube is fixed in a
central hole thereof, either by merely fitting the hole tightly or by screwing or
otherwise. In this case the anvil for the percussion cap may be formed as a head on
the end of the tube, with openings for the passage of the flame into the tube.
Dated this 17th day of July 1886
ABEL & IMRAY,
28, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: Appliance for Firing Cartridges for Ordnance and Machine Guns.
I, CHARLES DENTON ABEL, of No. 28 Southampton Buildings, Chancery Lane in
the County of Middlesex, Consulting Engineer and Patent Agent, 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 invention relates to cartridges for ordnance and machine guns in which the
firing effected by means of a percussion cap in a cap chamber on the metallic base
of the cartridge, and it consists in combining with the cap chamber, in the manner
hereinafter described, a tubular extension that passes centrally down the charge of the
cartridge and is provided with one or more openings, so that the flame from the
percussion cap, in passing down such tubular extension, will effect a more rapid
ignition of the charge than with the ordinary form of cap chamber.
Fig. 1 of the accompanying drawings shews one arrangement of cap chamber and
tube combined according to this invention. The cap chamber A has an external
screw threw B formed upon it, screwing into the threaded hole in the base D
of the cartridge case in a similar manner to that described in Patent No. 6909 of 1886,
and having at its inner end a tubular extension C, that may extend to desired
distance into the cartridge, and be either open at the end only or provided with
lateral holes for the passage of the igniting flame. E is the percussion cap or capsule,
arranged as described in my Patent No. 9323 of 1886. F is a loose anvil, which may
be held in position by the inwardly bent tongues on the capsule E.
any
Fig. 2 shows an arrangement in which the cap chamber A is formed on the
cartridge caso B, and has a central hole into which is fitted the tube C, which may
either fit the hole tightly as shewn on the right hand side, or be screwed in as shewn
on the left hand side. The tube is in this case formed with a head F that constitutes
the anvil; E is the capsule or cap as before.
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:
1. Constructing the cap chamber of a cartridge case with an external screw thread
screwing into the base of the cartridge case and having at its inner end a tubular
extension projecting into the charge of the cartridge substantially as hercin described
with reference to Fig. 1 of the drawings.
2. The use in combination with the cap chamber of a cartridge case, of a tube C
screwed into or fitting a central hole in the chamber so as to project into the charge
of the cartridge and having a perforated head F that forms the anvil for the percussion
cap, substantially as herein described with reference to Fig. 2 of the drawings.
Dated this 16th day of April 1887
ABEL & IMRAY,
Agents for the Applicant.