Improvements in Cartridges and in the Manufacture of the same.
Year: 1892

page_text: Date of Application, 5th Nov., 1892
Complete Specification Left, 20th Jan., 1893-Accepted, 11th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Cartridges and in the Manufacture of the same.
I, EMIL MÜLLER, of 19 Hohenzollernring, Cologne in the Province of the
Rhine, German Empire, Manufacturer, do hereby declare the nature of my
invention to be as follows:-
My invention relates to an improved cartridge and to the method of manu-
facturing the same, and consists in forming a cylindrical or conical narrowed portion
near the bottom of the cartridge and forming hereafter the usual burr by widening
or spreading again a part of the said narrowed portion. The usual cartridges are
either provided with a protruding burr, or the burr does not protrude and is
formed by a groove, notch or incision made around the cartridge: the object of
this burr is to permit the cartridge to be seized and drawn out of the barrel by a
suitable hook, fork, or lever, a mechanism which is of current employment in guns.
In order that iny invention may be fully understood, I will proceed to describe
the same with reference to the accompanying drawings in which:
Fig. 1 shows the cartridge in its first stage of manufacture and
Fig. 2 represents the same in its finished state.
Like letters denote like parts in both views.
In carrying my invention into effect I form a narrowed portion a near the bottom
of the cartridge b, said portion being either conical as shown, or cylindrical.
Hereafter the bottom of the cartridge is pressed so as to flatten and widen the
narrowed portion a thereby forming a burr c. It will be obvious that this burr
need not project from the body b of the cartridge. I prefer to make the burr c of
the same diameter as the cartridge proper. By this method I am enabled to obtain
a burr for the removal of the cartridge, which will not protrude from the body of
the cartridge, and without making an incision. Moreover the described construction
permits to realize the following improvement. Hitherto grooved cartridges had to
be made of one material only and compound plates could not be employed in the
manufacture of the same, as the outer material would have been removed at the
notch or groove whereby the solidity of the cartridge would have been impaired ;
thus the compound plate would have failed to fulfil its purpose. Owing to my
particular improved method of manufacturing the cartridge which consists in
forming the latter with a narrowed portion and with a burr which does not project
beyond the maximum diameter of the cartridge, without making any incision,
compound sheet metal plates may now be employed with advantage in the.
manufacture of cartridges. For instance nickel-plated sheet-steel or sheet brass
may be used, or the sheet brass may be nickeled first (by means of a galvanic
current) and hereafter subjected to pressure and to a drawing operation, or any two
metals may be combined so that aluminium may be chosen as one of the materials
of the compound plate; in fact, I am entirely free to select the two metals to
constitute a compound plate for a grooved cartridge, and may choose and combine
the metals possessing the appropriate qualities according to practical requirements.
Dated this 4th day of November 1892.

page_text: burr c at the bottom of the cartridge, for the purpose of obtaining a burr permitting
the removal of the cartridge without making an incision or exceeding the maximum
diameter of the cartridge, substantially as described.
2. A cartridge provided with an exterior protecting sheet-metal shell and near
the bottom with a narrowed portion a, from which the burr c projects so that its
edge is in line or thereabout with the mantle of the cartridge where the same has
its maximum diameter, for the purpose set forth.
3. A cartridge made of a compound sheet-metal plate and provided near the
bottom with a narrowed portion a, from which the burr e projects so that its edge
is in line or thereabout with the mantle of the cartridge where the same has its
maximum diameter, for the purpose set forth.
4. A cartridge made of plated sheet-metal and provided near the bottom with a
narrowed portion a, from which the burr e projects so that its edge is in line or
thereabout with the mantle of the cartridge where the same has its maximum
diameter, for the purpose set forth.
5. A cartridge made of galvanized sheet-metal and provided near the bottom
with a narrowed portion a, from which the burr c projects so that its edge is in line
or thereabout with the mantle of the cartridge where the same has its maximum
diameter, for the purpose set forth.
Dated this 18th day of Jonna 1902
By Robert Deissler,
EMIL MULLER,
38, Alexander Strasse, Berlin, C., Germany, Agent for the Applicant.