IMPROVEMENTS IN THE MANUFACTURE OF CARTRIDGES FOR BREECH-LOADING ARMS
Year: 1867

page_text: LETTERS PATENT to Clinton Edgcumbe Brooman, of the Firm of
Robertson, Brooman, and Company, of 166, Fleet Street, in the City of
London, Patent Agents, for the Invention of "IMPROVEMENTS IN THE
MANUFACTURE OF CARTRIDGES FOR BREECH-LOADING ARMS."-A communication
from abroad by Alfred Isidore Honoré Parent, of Paris, France.
Robertson, Brooman, and Company, of 166, Fleet Street, in the City of
London, Patent Agents, for the Invention of "IMPROVEMENTS IN THE
MANUFACTURE OF CARTRIDGES FOR BREECH-LOADING ARMS."-A communication
from abroad by Alfred Isidore Honoré Parent, of Paris, France.
Sealed the 22nd October 1867, and dated the 27th April 1867.
PROVISIONAL SPECIFICATION left by the said Clinton Edgcumbe
Brooman at the Office of the Commissioners of Patents, with bis
Petition, on the 27th April 1867.
I, CLINTON EDGCUMBE BROOMAN, of the Firm of Robertson, Brooman, and
Company, of 166, Fleet Street, in the City of London, Patent Agents, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN THE
MANUFACTURE OF CARTRIDGES FOR BREECH-LOADING ARMS," to be as follows:-
The object of this Invention is to prevent escape of gas at the time of the
explosion of the charge; and the Invention relates, firstly, to pin cartridges,
and, secondly, to central-fire cartridges.
First, pin cartridges with lateral fire.-It has been found that when the
explosion takes place the gas has a tendency to descend towards the base of
the cartridge, following the interior surface of the case, and to escape round
the striking pin; this inconvenience is obviated in the following manner:

page_text: Paper is rolled in the form of a long cylinder, and then subdivided into small
cylinders. One of these small cylinders of rolled paper is represented at a in
Figure 1. The cylinder is stamped into the form of a plug, as shown at a, a¹,
Figure 2; this plug a, a¹, is then inserted by force into a copper or other
metal socket b, Figure 3; another paper tube c, Figure 4, is prepared to
form the case of the cartridge, the bottom part of which is strengthened by a
very thin copper tube d; the bottom part of the tubes is then turned in, as
shown in Figure 5, and the turned in portion is covered with a copper ring f,
Figure 6; it is thus impossible for any escape to take place by the base of the
cartridge thus turned in. The case thus prepared is introduced into the
socket b, which carries the plug a, a¹, as seen in Figure 3. The case and
socket are submitted to great pressure in such manner as to render all solid
as shewn in Figures 7 and 8. During this pressure the plug a, a³, and
especially the narrowed part a³, is flattened and enlarged, so as to hold the
case and the socket without any possibility of the gas escaping between the
case c and the socket b, and consequently without any escape round the pin e,
Figure 8. The plug a, a', can also be composed of several parts, or, if
required, a washer of paper can be added to fill up the space which exists
between the case and the narrowed part of the plug before applying pressure
to the whole.
Secondly, central-fire percussion cartridges.-I manufacture these cartridges
as follows:-A plate or disc of copper or other metal is cut into the form g',
Figure 9, then stamped into the form shown at g¹, Figure 10, then
stamped again into the form g2, Figure 11, then to the form shown at g³,
Figure 12, then successively to the forms shown at g', Figure 13, and g³,
Figure 14, and, finally, to the form shewn at 9%, Figure 15. It will be
observed that in the last operation the chainber h is of the same piece as the
socket g. The chamber his pierced to receive a small flat pin i, Figure 16,
also the cap and a cover m; this cover m, which fits easily over the cap in
the circular space in the centre of the socket g', so as to be easily inserted or
withdrawn with or without the cap, is crushed or squashed when the percussion
takes place. This crushing hermetically closes the central aperture of the
socket g¹, consequently if the cap should be rent or torn all issue of gas by the
central aperture of the socket is prevented. The tube of paper constituting the
cartridge case is fastened on this socket.
1

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Clinton Edgcumbe Brooman in the Great Seal Patent Office
on the 26th October 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CLINTON
EDGCUMBE BROOMAN, of the Firm of Robertson, Brooman, and Company, of
166, Fleet Street, in the City of London, Patent Agents, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of April, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirtieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Clinton Edgcumbe Brooman, Her special licence that me, the said Clinton
Edgcumbe Brooman, my executors, administrators, and assigns, or such others
as I, the said Clinton Edgcumbe Brooman, my executors, administrators, and
assigns, should at any time agree with, and no others, from time to time and at
all times thereafter during the term therein expressed, should and lawfully
might make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN THE MANUFACTURE OF CARTRIDGES FOR BREECH-LOADING ARMS,"
(communicated to me from abroad by Alfred Isidore Honoré Parent, of
Paris, France), upon the condition (amongst others) that I, the said Clinton
Edgcumbe Brooman, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what manner
the same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
ני
NOW KNOW YE, that I, the said Clinton Edgcumbe Brooman, do hereby
declare the nature of the said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement thereof, reference being had to the Drawings hereunto
annexed, that is to say:-
The object of this Invention is to prevent escape of gas at the time of
the explosion of the charge, and the Invention relates, firstly, to pin or lateral-
fire cartridges; and, secondly, to central-fire cartridges.
1st. Pin cartridges with lateral fire.-It has been found that when the
explosion takes place the gas bas a tendency to descend towards the base of
the cartridge, following the interior surface of the case, and to escape round
the striking pin. This inconvenience is obviated in the following manner :-

page_text: Paper is rolled in the form of a long cylinder and then subdivided into small
cylinders; one of these small cylinders of rolled paper is represented at a in
Figures 1 and 2; this cylinder is stamped into the form of a plug, as shown
at a, a, Figures 3 and 4; this plug a, a', is then inserted by force into a
copper or other metal socket b, Figures 5 and 6; another paper tube c,
Figures 7 and 8, is prepared to form the case of the cartridge, the bottom part
of which is strengthened by a very thin copper tubed; the bottom part of the
tubes is then turned in, as shown in Figures 9 and 10, and the turned in
portion is covered with a copper ring f, Figures 11 and 12; it is thus im-
possible for any escape to take place by the base of the cartridge thus turned
in. The case thus prepared is introduced into the socket 6 which carries the
plug a, a¹, as seen in Figures 5 and 6. The case and socket are submitted
to great pressure in such manner as to render all solid, as shown in Figures 13
and 14. During this pressure the plug a, a¹, and especially the narrowed
part a', is flattened and enlarged so as to hold the case and the socket without
any possibility of the gas escaping between the case c and the socket b, and
consequently without any escape round the pin e, Figure 14. The plug a, a',
can also be composed of several parts; or if required a washer of paper can
be added to fill up the space which exists between the case and the narrowed
part of the plug before applying pressure to the whole.
2ndly, central-fire percussion cartridges.-I manufacture these cartridges as
follows: A plate or disc of copper or other metal is cut into the form g,
Figures 15 and 16, then stamped into the form shewn at g³, Figures 17
and 18, then stamped again into the form shewn at 9%, Figures 19 and 20,
then to the form shewn at g³, Figures 21 and 22, then successively to the forms
shewn at g, Figures 23 and 24, and 9, Figures 25 and 26, and, finally, to
the form shewn at 9°, Figures 27 and 28. It will be observed that in this
last operation the chamber h is of the same piece as the socket g. The
chamber his pierced to receive a small flat pin i, Figure 29 and 30, also
the cap and a cover m; this cover m, which fits easily over the cap in the
circular space in the centre of the socket 9, so as to be easily inserted or with-
drawn with or without the cap, is crushed or squashed when the percussion
takes place. This crushing hermetically closes the central aperture of the
socket g, consequently if the cap should be rent or torn all issue of gas the
central aperture of the socket is prevented. The tube of paper constituting
the cartridge case is fastened on this socket.
l
And having now described the nature of the said Invention, and in what
manner the same is to be performed, I declare that I claim,―
First, the manufacture of pin or central-fire cartridges, substantially as

page_text: herein-before described with reference to Figures 1 to 14 of the accompanying
Drawings.
Second, the manufacture of central-fire cartridges, substantially as herein-
before described with reference to Figures 15 to 30 of the accompanying
Drawings.
In witness whereof, I, the said Clinton Edgcumbe Brooman, have here-
unto set my hand and seal, this Twenty-sixth day of October, One
thousand eight hundred and sixty-seven.
C. E. BROOMAN. (L.S.)