US1153860A - Cartridge. - Google Patents

Description

P. BUTLER.

CARTRIDGE.

APPLICATION FILED JAN. 15. 1914.

1,153,860. PatentedSept.14, 1915.

*rrn s'rAns rAjrnnr enrich.

rAuL BUTLER,

CARTRIDGE COMPANY, A

0F LOWELL, MASSACHUSETTS, ASSIGNOR T0 UNITED STATES CORPORATION OF MASSACHUSETTS.

CARTRIDGE.

Specification of LettersPatent.

Patented Sept. 14, 1915.

T 0 aZZ whom it may concern Be it known that 1, PAUL BUTLER, a citizen of the United States, residing in Lowell, in the county of Middlesex and State of lifassachusetts, have invented an Improvement in Qartridges, of which the following description, in connection with the accompanying drawing, is a specification, like numerals on the drawing representing like parts.

The present invention relates to a cartridge, and is embodied in what is commonly known as a paper cartridge, the purpose of the invention being to make the cartridge more nearly water-proof than has been possible heretofore. Tn loaded cartridges of this type, the outer wad which confines the charge of shot is held in position by crimping in the outer end of the paper tube. While the material of which the paper tube is made can be satisfactorily water-proofed so far as relates to its surfaces, it is practically impossible to protect adequately the cut end of the tube with water-proof material, so that after the shell has been loaded and the cartridge completed, the said end, though forced tightly into contact with the surface of the wad is capable of absorbing moisture which gradually permeates the fiber between the surfaces of the tube, causing the same to swell and become distorted. This swelling or distortion, though slight, is apt to be suflicient to prevent he ready insertion of the cartridge into the chamber of the gun, thus rendering the cartridge practically useless.

The application of water-proofing material at the point of contact between the bent over end of the tube and the surface of the wad has been found to be inefficient as an expedient for overcoming the trouble, in view of the fact that it is not durable enough to answer the purpose. Furthermore, any water-proofing material which can be used for this purpose, such, for example, as parafiin, is liable to become chipped and broken out, leaving the cartridge in its original exposed condition.

In accordance with the present invention, I provide the loaded cartridge with a relatively thin disk of paper, fiber, or like material, which is inserted in the muzzle end of the cartridge, between the surface of the shot-confining wad and the outer end of the cup, after the latter has been turned over or crimped to retain the wad in position.

The drawing is an elevation of a cartridge embodying the invention, the muzzle end thereof being broken away and shown in longitudinal section.

The cartridge embodying the invention consists of the metallic cup 1 and the paper tube 2 the invention pertaining to a loaded cartridge as herein shown. Ihe charge of powder, confined by one or more wads in the usual way, is not herein shown, the charge of shot 3, however, being indicated as contained in the cartridge near the muzzle end thereof and confined as usual by the wad at held in position by the crimped in outer end 5 of the paper tube 2. Owing to the fibrous nature of the material from which the tube is made, it is practically impossible to protect the exposed edge of the tube where it has been cut to the right lengthand the fiber may become more or less displaced or loosened when the end of the tube is turned over in the crimping process. There is, therefore, an opportunity for moisture to creep in between the end of the tube and the surface of the wad; and owing to capillary attraction, the material is likely to absorb moisture enough to cause swelling or distortion.

In order to protect the exposed edge of the tube, 1 provide the cartridge, in accordance with my invention, with a washer 6 which fits closely in the end of the cartridge beyond the wad 4, the said washer being frictionally held in position by contact with the sides of the turned-in tube 2. In order to prevent undue back pressure against the shot at the time of discharge, I have shown the washer 6 as flexed in the middle so that the circumference of said washer while having a firm bearing against the bent in end of the paper tube does not extend far enough in to prevent the said bent end from straightening readily to release the wad & in response to the pressure of the gases. By forming the washer in this way it can be held in place with a sufficient frictional hold to make a moisture proof end without materially increasing the back pressure and thereby injuring the efiiciency of the cartridge.

What I claim is: outer Wad the said disk being concave-com A paper cartridge comprising a metallic vex in shape. breech-cup and a paper tube, the said car- In testimony whereof, I have signed my tridge containing a charge confined therein name to this specification in the presence of 5 by a Wad held in position by the inturned tWo subscribing Witnesses.

edge of the paper tube at the muzzle end of the cartridge; combined With a relatively PAUL BUTLER thin disk of water-proofed paper slightly Witnesses: larger in diameter than the cavity at the C. E. HOME,

10 muzzle end of the cartridge beyond the H. A. SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. 0;

Images