US87125A - Willtam tibbals - Google Patents

Description

W. TIBBALS. METALLIC CARTRIDGE CASE.

No. 87,125. Patented Feb. 23, 1869.

Fig.4.

Witnesses,

shell.

longitudinal central section of a car- WILLIAM TIBBALS, OF HARTFORD, CONNECTICUT.

Letters Patent No. 87,125, dated February 23, 1869. I

IBEPROVEMENT IN METALLIC CARTRIDGE-CASES.

the Schedule referred to in theselhette resfat'ent and msking pflrt of the samecut, have invented certainnew and useful Improvements in'Metallic Gartridge-Oases-,- and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specification, and to the letters of reference marked thereon, like letters indicating like parts wherever they occur.

To enable others skilled in the art to construct and use my invention, I will proceed to vdescribe it.

My invention relates to an improved method of constructing metallic cartridge-cases; and consists in a novel method of securing the, anvil within the case, or

Figure l is I tridge-ca'se, showing the anvil in the act of being inserted; Figure.

in place,-'r'eady. for use;

' Figure?) is afitransverac section of the anvil before being inserted; and.

' Figure 4, a face'viewofr-the anvil, from the under side, as it appearsafter-it'is secured in the case.

Heretofore it has been customary to locate the fulminate, in this class of cartridges, in the flange of the case or shell.

mass of paper compressed, and occupying a considerable,space, and necessitating the use of a pin or other device for igniting it, as in the Lefacheux cartridges,

or-:of a solid block of metal, dropped into the case, and

secured therein by indentations made in the sides of the case, above the edge. of the anvil, the/result has been that such-efforts have failed to produce an efiicient and cheap cartridge-case, suited to the wants of the community, i

To overcome these difiiculties, and produce a central- 1 fire cartridge, in a cheap and expeditious manner, is the object of my present invention, and to do this, I pro-,

-ceed as follows:

diameter equal to the internal diameter of the head of the-case A.

- This disk has a hole, c, formed in it, a little to one ,side'of the centre, as shown in the various figures, and

v on its under face a small groove or indentation, c, is formed, this groove extending from the-hole e to the centre of the disk, as shown more clearly in fig. 4.

-' The disk B is then pressed into a concave form, as

- represented in figs. 1 3, by which operation its similar View, showing the-anvil secured Attemptshave also been made to construct-a cartridge havingthe fulminate at the centre;

but, as in such efforts the anvil consisted either of a diameter is reduced sufficiently to permit it to enter readily withinthe case A, as represented in fig. 1.

It isthen pressed down, by a suitable punch, upon the base or head of thecase A, whereby it isfiattened out over nearly all its surface, its diameter beifigthereby increased to its original size, and its edge, all around, being, at the same time, forced out into the cavity within the flange a of the shell, as shown in fig. 2, whereby it is firmly secured in place v In order to form acavity for the reception of the fulminate, the head orbase of the case A may be cut away, orslightly indented, on its inner face, as represented at o, of figs. 1 and 2, by which means the metal of the shell will be rendered'thinner at that point, and a less forcible blow he required to ignite the fuhni nate.

If preferred, however; this may be omitted, and the cavity for the. receptionof the fulminate' be formed by leaving a small pdrtion of the disk,,or anvil B, it its .centre, concave,- a d-represented in-figsI 2 and i, th being efl'ected by using a; punch for flattening out the disk, that shall have n central'cavityon its face, of the required size and form, so that, while operating to spread the disk and force its'edge into the cavity of the flange," the central portion shall be left in 'a concave form, as

duced at one single operation, and thus the disks, or

anvils, can be producedin a very expeditious and cheap manner; andby the'peculiar manner of securing it in the case A, I am enabled to produce a very superior cartridge-case, using a much lighter and cheaper anvil than heretofore, and avoiding entirely the danger or liability of the anvils becoming loosened from the case, and driven out into the bore of the gun, by the blow of the hammer, or firing-pin, and dispensing with all .pins, caps, and other fixtures heretofore used for igniting the charge.

I am aware that cartridges have been made .in which a disk was placed loosely in the shell, as in the patent of Smith and Wesson, August 8, 1854; and I am also aware'that a disk has been used for packing or holding the fulminate in the flange or rim, as in the cartridge patented to Smith and Wesson, April 17, 1860, and also in the rejected application of O. Sharps, filed J anuary 28,1860, and therefore I do not claim such; but having fully described my invention,

WhatI claim, isi A metallic cartridge case, consisting of the shell-A,

having the perforated disk-anvil B secured therein, as

herein described, for the purpose of producing acentralfire cartridge, substantially as set forth.

WM. TIBBALS. Witnesses: I

Gno. A. Hints, W. A. Looms.

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