US212313A - Improvement in cartridges - Google Patents

Description

W. W. HUBBELL Cartridge.

No.f212,313. Paiem-ed Feb. 18,1879.

UNITED STIITEs WILLIAM w.

EUBBELL, `on WASHINGTON, DISTRICT or COLUMBIA.

IMPROVEMENT IN clm'rmoelas.

Specification forming part of Letters Patent No. 212,313., dated February 1S, 1879; application filed December 2S, 1878.

To all whom t may concern:

Be it known that I, WILLIAM WHEELER HUBBELL, of Washington, in the county of Washington and District of Columbia, have invented au Improved Metallic Cartridge; and I do hereby declare that the following is a' full, clear, and exact description thereof.

My invention relates tothe peculiar construction and combination of a circular me -tallic perforated plate with the circular fulmi' nate-carrier and solid fire-tight metallic case and head in one pie-ce, as will be hereinafter more fully set forth and described.

In the accompanyin g drawings, Figure 1 is a longitudinal section of my improved'metallic cartridge, Fig. 2 is a plan view of the retaining disk or anvil. Fig. 3 is a diametric sec- -'tion of the ilminatecarrier, plate, and anvil;

and Fig. 4. is aplan view of the fulminatecarrier.A

A is a cylindrical metallic cartridge case or shell, with solid rear end, L, in one piece there'- with, and both retight, open only at the front end, B, to be primed and loaded at this front opening'.

D is a circular disk of paper or any suitable substance, perforated through rthe center for the reception of the fulminate in this perforation or chamber O. i This paper disk when charged with fulmi- .nate 1s placed against the bottom L of the metallic case A. E is a circular metallic ,plate closely fitting inside of the case A, down upon the paper disk D, where it is held in place by contracting or pinching in the case A, which forces the plate E down upon the disk or base 'of the case and makes a tight joint around the edge of the plate.

The plate E is provided with peri'orations k k upon either side of a central line drawn through its axis, as shown at h lz., Figs. 2 and 3, sufficient space being left between these perforations to form the bar z', of a breadth nearly equal to the diameter of the perforation C, immediately over which it rests.

F is the space in the cartridge, which is loaded as usual with a charge of powder and bullet of any desired weight and shape. The fulminate-,chamber C may be recessed or 'receive the central blow of formed in the metal of the circular plate E, with the central bart' and two side perforations kk over it, dispensing with the paper. The central anvil affords a rm resistance to a central striker acting on the center of the base L, and compressing the fulminate toig nite it with certainty. The two side vents diffuse the lire into the base of the charge of powder, and its instant explosion presses back the circular anvil-plate, and prevents it from l being blown out in the barrel, the charge being consumed from the base forward without re'- action of the iire or waste of the powder.

The distinguishing feature of my invention is the organized construction to carry into com.- plete effect the expressed principles of operation of thefulininate of mercury or detonating powder and thepowder-charge. In this organization the fulminate, although the superior explosive force, is contracted into a diminished or small central chamber and fills it. The flange and head of the metallic case are solid, all in one piece. This chamber at its sides or outer extreme edges communicates directly and exclusively with the powdercharge, so that the explosive force of the ful# minato is not allowed to expand under a larger area of the anvil-plate .and blow it out, but

is compelled to diffuse its explosive force,

not in-'a central stream, but in a diused body into the base of the powder-charge. To effect this the central anvil-piece has no central aperture, is as wide as the fulminate-tilled chamber, and the perforations are at the exi treme outer sides of this fulminate for two purposes. One is to diffuse the tire from this center most thoroughly. rlhe other is to have an unperforated anvil over and against the t'ulminate, as it rests solid .in its chamber, to

a striker and obtain complete resistance by the anvil-bar, and

yet have free escapement for the explosive force at once from beneath the an"vil-platewithout any chamber or space for-.it to expand into under the plate. This assures a certain ignition, security of the anvil-plate to keep its position, and a complete combustion of the powder-charge, from the base forward, as it impels the bullet out of the gun.

Having obus described 'my invention, whatA central eharnber of fulminate in the base of I claim as new, and desire to` secure by Lets-v the cartridge, substantially as described,

ters Patent, is In testimony that I claim the foregoing as In the bottom of asolid metallic-flange can my own, I affix my signature in presence of tridge ease or shell, the eonibiimtion of a eirtwo witnesses.

onlin base ineiosing n central chmnberof ful- WM. "WHEELER HUBBELL. min-ate and an anvil over the fulminzite pro- Witnesses: vided With two or more openings, whose inner ALBIN M. LONG,

edges nearly coincide with the edges of the l NVM. Gr. HENDERSON.

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