US198973A - Improvement in breech-loading fsre-arfvis - Google Patents

Description

GEORGE H. rox, oF'BosToN, MASSACHUSETTS IMPROVEMENT IN BREEcH-LQADING FIRE-ARMS.

Specification forming part of Letters Batjent No. 198,973, dated January 8, 181'8;v application led Qcmber. 30,1311.

To all whom 'it may concern:

Be it known that I, GEORGE H. Foggof Boston, in the county of Suffolk, State of Ma ssaehusetts,-haveinvented new anduseful Improvements in Double-'Barreled Breech- Loading Guns, of whichthe following is a speeiication: l'

My present invention relates to the recoilse'at of the breeeh-plate'orstock of the gun,

which receives and resists the'force of the eir-v plosion of the charge.

p Heretofore (with .one exception, so.far as` my knowledge extends) the recoil-seat of donble-barreled breech-loading guns has been" a' fiat plane common to the twoy barrels, and,

Aas the axes of the `barrels converge at the muzzles, itis evident that the rear ends' do not present-a square bearing to the face of the' breech-seat, andthe' heads ofthe eartridge-shells do not bear fair. upon it. In fact, the discrepancy, invmany instances, is

' suflieient to force the shell out of shapeand crack the heads, ,and in some .instances blonT ofi' the latter, and is the cause of other evils. In carrying vout my invention I form the breech-face oftwo faces, each of whichl is at -right angles to the axis ofthe barrel to which insured; and for this reason the cartridgeshell retains intact its original shape after long usage.

The drawing accompanying` this specifica-'- tion represents a plan 4of a double-barreled breech-loading shot-gun embodying my improvement, the barrels being turned to one side to better illustratethe form of the breech.

The v*breech or recoil-seat of the gun is shown'illpsuch drawing' at A, and the twoV barrels at B and (l, respectively.

As before stated, the recoil-seat or face A of the breech has practically two faces, a. 'and 1),. which converge at a very slight obtuse angle, or to sucll a degree that each shall be at right angles to theaxis of the barrel opposite it, the purposes and eiiects of such a construction being as before stated.

l The barrels B and C move to open and close the breeehby a horizontal or sidewise ,being guided in thesemovements by an actual 'pivot located at suchpoint,'are really guided andcontrolled by pins or. studs Working in grooves 4struck from a center which is out-l sideof the boundary of the gun, and which may be termed an' imaginary center.

I do not, however, confine myself to any given method of pivoting or operatingthe barrels as the results of my construction or form ofz the breech will be the same with any manner of vhinging or pivotingthe barrels.

-I amaware that it has been' customary prior to 'the origin of my invention to eounterbore a recess inthe breech-seat opposite each barrel to receive the head of the cartridge-shell, the bottom of this recess'only being at right angles tothe axis of the adjacent barrel. By this system, howeverrthe rim of the head ofthe cartridge-'shell-rests in part at one side in the rabbet of thel cartridge-chamber of the barrel, and in part in the recess alluded to, and the barrel, in moving'to open and close the breech, necessarily moves vback and forth longitudinally and horizontally of the barrels,

Objectionable results follow the use of the recesses, and they soon become iilled with dirt, and the barrels will not come up to place, andthe gun is in an unsafe condition.

In my gun a smooth unbroken breech-surface is opposed to each barrel, upon which dirt cannot collect. The. rimA of each cartridgehead also tits perfectly in the rabbet of the cartridge-chamber of the barrels, and in general the construction is infinitely more Workmanlike and superior than With sunken re' cesses.

In double-barreled breech-loading guns, a breech-seat composed of two ilat planes, each of which is at right angles in all directions 'to the axis ofthe adjacent barrel, substantially as and for Imrposes stated. GEO. H. FOX.

Witnesses:

F. GURTfIS, 115A. CURTIS.

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