US55676A

US55676A - Improvement in priming metallic cartridges

Info

Publication number: US55676A
Authority: US
Publication date: 1866-06-19
Anticipated expiration: 1883-06-19

Description

I T. T. S. LAIDLY.

V Cartridge. No. 55,676. Patented June 19,1866

as be'ihre.

UNITED 1 STATES PATENT OFFICE.

THEODORE r. s. LAIDLEY, 0F srarseriann MassAoHusE'r'rs.

IMPROVEMENT IN PRIMING .METALLIC CARTRIDGES.

Specification forming part of Letters Patent No. 55,676, dated June 19, 1866. n

, views of the anvil Figs; 5 and 6, views of the anvit with the percussion-cap in place. "Fig. 7 represents the cartridge-case after firing. V Similarlerters t referenccindicate like parts in the different figures.

The nature of my invention consists in inserting in the cartridge-case an anvil, A, punched from sheet metal, and receiving a percussioncap, and holding the anvil firmly in its place by means of a shoulder formed below the head of the cartridge by reducing the diameter of the case a portion .of its length.

1 The cartridge is fired from a barrel, the cham- Eer of which isthe frustum ot'acone. The case onthrmsto'the chamber after the explosion, I the shoulder disappears, and the anvil can be withdrawn, recapped, inserted, and made fast,

The advantages that [cl aim for thiscartridge are, the firmness with which the anvil is held in place, thereby securing certainty of fire the small weight of the anvil; the small volumeit talcesinthecartridge-case; the ease with which it is taken out, recapped,and replaced, thereby enabling the sportsman to use the same cartridge-case several times, and thus diminishing thecost of his; ammunition.

To enable those skilledin the art to make and use my invention, I will proceed to describe the mode of making it. v

Punch out from sheet metal the anvil A, of the proper width to allow it to enter the cartri'd ge-case with a snugfit. Itsthickness should be such as to resisttbe blow ofthehammer without yielding. Put on a percussion-cap, press the anvil lo the bottom of the cartridge-case, which has already been drawn and headed, force the caseinto adie which is about three orfour hundredths of an inch smaller in diameterthan the cartridge-case, until the shoulder thus formed is brought against the anvil. The case is then ready for the charge of powder and ball. Ream out the chamber of the gun to a uniform taper, so that the cartridge will just enter with a snug fit at its two extremi ties. After the cartridge hasbeen fired pull out with a pair of pliers the anvil, renew the cap, replace the anvil in the bottom' of the case, and force the case into the die, reducing the diameter as before. forming a shoulder for the anvil to rest on. In this way the cartridgecase may be used over a number of times-as many as ten or twelve times.

This style of cartrid'ge'can be used to great advantage where the space occupied by the powder is considerable in length, as in cartridges of small caliber with large charges.

I am aware that cartridges have been niade by ,securingthe anvil in the head of the cartridge-case, the head being formed by reducing the rest of the case to a smaller size. Car- ;tridges made in this way cannot be reloaded, like that of mine above described. and which possesses this greatadvantage.

What I claim as my invention, and desire to secure by Letters Patent, is-

, The combination of the cartridge-case with an anvil, A, which is of such shape that it holds thepercussion-cap in a central position within the case against the head, and is held firmly in its place. by'resting against a shoulder formed in the case below the head after the anvil has been inserted in the manner and for the purpose above described.

T. T. S. LAIDLEY. Witnesses:

R. G. SHURTLEFF, GEO. W. WATERS.