US116094A

US116094A - Improvement in metallic cartridges

Info

Publication number: US116094A
Authority: US
Publication date: 1871-06-20
Anticipated expiration: 1888-06-20

Description

TIMOTHY J. POWERS, OF 4NEW YORK, N. Y.

IMPROVEMENT EN METALLIC QARTRIDGEES.

f Specication forming part of Letters Patent No. 116,094, dated J une 20, 1871.

To all whom 'it may eoncerm Beit known that I, TIMOTHY J. POWERS,

of the city, county, and State of New York,

have invented a new and useful Improvement in Center-Fire Cartridge-Cases, of which the following vis a specification, reference being had to the accompanying drawing forming part thereof, in which- Figure I is a view, partly in section,of a cartridgecase completely primed embodying my invention. Fig. Il is a butt-end view of the same. Fig. III .is a view, partly in section, of a' cartridge-case prepared to receive the priming. Fig. IV is. a central sectional view of the flanged cup or tube to be inserted in the butt of the cartridge-case for holding the percussion-cap that forms the priming. Fig. Vis an end view of the same.-

My invention consists innpiereing the butt of the cartridge-case for the admission of the priming devices, and carrying a portion of the metal of the -butt inward so as to form an annular or tube-like/projection, then inserting into this opening a iianged cup or tube, the ange resting against the outerA surface of the butt, and the body being tightly encircled by the annular projection on the butt thus seeming the said cup in position,an forming avery complete jgas-cheek', and then inserting into this short ftube a percussioncap having in it a suitable anvil on which to explode the cap.

A is a metallic-cartridge case, made in the ordinary manner. a isV an annular or short tube, projecting inward around the orifice c, made inthe butt of the case. b is a primingholder, being a small cup struck or drawn up out of either a circular or star-shaped piece of metal plate, the rim being turned outward at right angles with the body, forming a ilange, e. 1t is made to dt snugly into the orifice e in the butt of the case, the dange e resting against the outer surface of the butt, which is bent inward around the orifice c to receive it, so that the rear of the butt with the flange c of the priming-holder b shall present a smooth surface. A small hole, one or more, is made through the bottom of the primingholder, to permit the iire from the priming to communicated to the gunpowder within the case. d is an ordinary percussion-cap, containing a suitable anvil, t, to explode the cap, one end or edge of which touches the priming of the cap, and the other is flush with the open end of the cap. This cap is forced tightly into the priming-holder b, the open end with the anvil resting down against its closed end. After the priming-holder b is inserted into the orifice c, the annular flange a should, by a suitable die-punch, be placed within the pase, having in its end a counter-sink fitted to receive and hold the ange a, and a small punch forced into the orice c be closed in tightly around the body of the priming-holder.

When this operation is properly performed the flange or tube a and-the body of the priming-bolder b may be so closely and firmly united together asto constitute them a perfect gas-cheek, preventing all escape of gas between them.

The gas generated by firing the powderI in the cartridge, pressing upon the outside of the flange a, tends to close the flange more tightly in upon the body of the priming-holder b, and necessarily obviates all escape of gas.

The percussion cap may be readily removed after firing, as is evident, and another inserted; and I have often reloaded and fired one of these cartridges forty or fty times Without destroying or indeed injuring the case.

4 l am aware that the use of the flanged cup or tube b for holding a percussion-cap as a priming iu the butt of a cartridge-case is not new; but whenever it has been heretofore used, so far as I know, the orifice in the butt of the case made to receive it has been formed by removing the metal at the opening, making a straight 'clean eut through the metal, and without turning any of it inward to form a support or a gas-check around the body of the cup. The result has been ,thatf from cartridges primed in this manner there is so large an escape of gas upon firing them that they are practically worthless unless the butt is filled in and made tight by paper or some equivalent substance pressed into them. I do not, therefore, claim broadly the priming of a cart-V ridge by means of a percussion-cap held within the cup b in the butt of the case; position and a gas-tight connection e'eeted, but as set forth. What I do claim is- T. J. POWERS. The combination and relative arrangement herein shown and described, of the interna Witnesses: ange a and cappocket 0r battery-cup b, J. P. FITCH, whereby the said battery-cup is secured in GEO. GOTT.