IMPROVEMENTS IN THE MANUFACTURE OF CARTRIDGE CASES
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 CARTRIDGE CASES."-A communication from abroad by
Hinnolyte Rochatte of Paris France
PROVISIONAL SPECIFICATION left by the said Clinton Edgcumbe
Brooman at the Office of the Commissioners of Patents, with his
Petition, on the 25th July 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 CARTRIDGE CASES," to be as follows:-
Cartridge cases made of paper, pasteboard, or fabric have several in-
conveniences which led to the employment of metallic cases, but the latter
have been comparatively costly owing to the mode of manufacture and to
the thickness required to give the necessary rigidity.
Now this Invention consists in making what I term mixed cartridge cases,
that is to say, I make the interior of the case of paper, pasteboard, cloth, or
other suitable material and the exterior of brass, iron, steel, zinc, or other
metal or alloy. As the inner tube has a certain rigidity the outer metallic
tube may thus be very thin.

page_text: In carrying out this Invention I take a tube of paper, pasteboard, fabric,
or other suitable cheap material, and roll upon it a thin strip of brass or other
suitable metal, the joint of which formed by the edges extends lengthwise of
the tube. I solder this joint with tin, or I secure the edges by metallic wire
or otherwise; I then draw the whole at the draw bench, whereby I obtain a
mixed tube, the exterior of which is very smooth and the bore or inner
surface of which is perfect; this tube is then divided transversely into lengths
suitable for cartridge cases, and the ordinary base or socket is applied to one
end of each length to complete the case ready to receive the charge.
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 November 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-fifth day of July, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first 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 I, 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 MANUFACUTURE OF
CARTRIDGE CASES," (communicated to me from abroad by Hippolyte Rochatte,
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 par-
ticularly 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.
NOW KNOW YE, that I, the said Clinton Edgcumbe Brooman, do
hereby declare the nature of the said Invention, and in what manner the

page_text: same is to be performed, to be particularly described and ascertained in and by
the following statement thereof, reference being bad to the Drawings hereunto
annexed, that is to say :-
Cartridge cases made of paper, pasteboard, or fabric have several in-
conveniences which led to the employment of metallic cases, but the latter
have been comparatively costly owing to the mode of manufacture and to
the thickness required to give the necessary rigidity.
Now this Invention consists in making what I term mixed cartridge cases,
that is to say, I make the interior of the case of paper, pasteboard, cloth, or
other suitable material, and the exterior of brass, iron, steel, zinc, or other
metal or alloy. As the inner tube has a certain rigidity the outer metallic
tube may thus be very thin.
In carrying out this Invention I take a tube of paper, pasteboard, fabric,
or other suitable cheap materials such as is represented at a, Figures 1
and 2, and roll upon it a thin strip of brass or other suitable metal such
as is represented at b, Figures 3, 4, and 5, the joint of which, formed by
the edges, extends lengthwise of the tube, as seen in Figures 6 and 7,
which represent the metal strip rolled upon the paper tube. I solder this
joint with tin, or I secure the edges by metallic wire or otherwise, I then
draw the whole at the draw bench, whereby I obtain a mixed tube, the exterior
of which is very smooth, and the bore or inner surface of which is perfect,
(see Figures 8 and 9); this tube is then divided transversely, as indicated
in Figure 10, into lengths suitable for cartridge cases, and the ordinary base
or socket c, Figure 10, is applied to one end of each length to complete the
case ready to receive the charge. In some cases, instead of rolling the thin
metal strip upon the paper tube, I roll the metal strip separately into the
form of a tube, solder or secure the edges, and then insert the paper tube.
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, the manufacture
of what I have herein-before termed mixed cartridge cases, substantially in
the manner herein-before described.
In witness whereof, I, the said Clinton Edgcumbe Brooman, have here-
unto set my hand and seal, this Twenty-sixth day of November, One
thousand eight hundred and sixty-seven.
C. E. BROOMAN. (L.S.)