US290737A

US290737A - brown

Info

Publication number: US290737A
Authority: US
Publication date: 1883-12-25
Anticipated expiration: 1900-12-25

Description

(No Model.)

2 SheetsSheet l.

J. H. BROWN. BREEOH LOADING FIRE ARM.

N0.290,'73'7, Patented De0525, l883.

(Nu Model.) H 2 Sheets-Sheet 2.

J. H. BROWN.

BREEGH LOADING FIRE ARM. No. 290,737. Patented Dec. 25 1883.

. KR W UNETED giATES r ATENT Fries.

"Jenner. snows, or new YORK, N. Y., ASSIGNOR TO THE BROWN STAND ARD riRnKRMs OOMPAINYDOF. sA nPnAeE.

Basses-concise: rrse nem.

SPECIFICATION forming part .of Letters Patent No. 290,737, dated December 25, 1883.

Application filed March 5, 1882!. (No model.

To all whom it 77mg concern:

I Be it'known that I, JOHN H. Brown, of New York, in the county and State of New York, have invented a certain new and usefol Improvement in Fire-Arms, of which the following is a specification.

My improvement relates almost entirely to fire-arms in which a breech-block is arranged to slide in rear of the breech of the barrel.

I will first describe in detail a fire-arm embodying the improvement, and then point out the improvementin the claims.

In the accompanying drawings, Figure 1 is a longitudinal section of the lock and a por- 5 tion of the barrel and stock of a fire-arm embodying my improvement. Fig. Qisasimilar view, showing the parts of the lock in difi'erent positions. Fig. 3 is-a top view, and Fig. 4 is a transverse section taken just in rear of the breech-block.

Similar letters of reference designate corresponding parts in all the figures.

A designates the breech of the barrel. It may be of the usualor any other approved 2 construction, and is shown as being secured to the false breech A by being screwed into the latter..

B designates abrcechblock adapted to slide up and down in ways in thelock-cusc just bebind the breech oftheburrcl. The uppcrpurt of the lock-case and the corrcspoiuling pnri of the breech-block are hollowed out, so us to facilitate the insertion of a cartridge in the breech of the barrel. 3 In the upper part of the brcech-block a liring-pin, C, is arranged. This firing-pin is shown as having the forward end, a, made very inuch smaller than the body or main portion. In the upper part of the body or main portion rio ofthis pin is a recess, 7), into which extends the end of a screw, 1:, inserted from I he top of the breech-block and serving to retain the pin in the breech-block. The tip of the forward end ofthe firing-pin is roumlcd, so that the pin will work back on comingin ('ontuot with any Object during the movement of the breechpiece. The upper portion of the breech-block is thicker than the lower POItlUlLotllld hence 'forms a rearward cam-like protuberance, d,

having an inclined lowersurface. The lower portion of the breech-block terminates in check-pieces 0, between which extends a camlug, f, projecting from alever, D. This lever is pivoted 0r fulcrnmed at the forward end by a pin, g, which has a fixed position in the fore portion of the lockcase, and its rear cndis ,adapted to fit close to the under side of the stock E. The lever is so shaped as to comprise a triggenguard, h. The cam-lugfofthe lever has an L-shaped slot, .9, through which passes a pin, '5, whereby it is connected to the cheek-pieces e of the breech-block. F, attached to the under side of the barrel A, acts upon the forward end of the 1ever, so as tohold it in-position when its rear end fits close to the stock, and also when its rearendis swung forward.

Instead of having the spring F act directly upon the lever, it will preferably be made to act upon an anti-friction roller, j, which is mounted upon the lever. lVhcn the lever is swung forward, it. draws down the breech block, and whcnit is swung back it elevates th breech-block by the action of the walls of the slot 5 upon the pin After the lever has been swung forward farenough to depress the brceclr-block, the lever can be moved farther l'onmrd to operate an ejector, G. In this last movement of the lever one limb or branch of the L-shapcd slot 8 passes away from the pin 1, and the other limb or branch of the slot plays over the said pin without all'ccting the hrceclr block.

II is a hammer pivoted upon a pin, Is. and a convcx'brcast, 7, below its head in. The hammer is impelled forward by u 'nluinspring, T. This muinspring is doubled or bent over hetwccn the ends, so as to form two arms, one of which acts on the under side of a shoulder, 1:, ol' the hannner, and the other of which acts upon the trigger J, in rear of its pivot, so us to impel the trigger loiwvurd and the gear K upward against the hammer. The doubled portion is fitted into and held by a notch, o, in tho triggenplule L. The trigger J is pivoted within the forked end of I he trigger-plate by a pin, 1). The under side of the cum-like A, spring,

portion cl of the breechblock extends upproximovement of the breech-block.

mately in the same direction as or conforms to the upper portion of the breast'i of thehammer H. When the breech-block is'depressed, its cam-lil e portion (1, acting upon the breast Z of the hammer forcesthe same rearward, and as soon as the hammer reaches its rearmost position the sear engages with a notch in it and holds it there, even after the breech-block is elevated.

5 Mdesig ates a safety-catcli consisting of a lever pivoted 'by'a pin q, within 'a'slotf iir the trigger, so that' its upper end may'engagewith,

the trigger-plate L when its lower end is impelled iorward. A spring, N, fastened at one end by a screw, 1", to the trigger, and at theother end impinging against the safety-catch lever, causes the latter to engage with the trigger-plate. erated to release'the hammer the lower end ot the safety -catchmust be pulled back, so as to disengage its upper end from the trigger plate. Owing to this the hammer is prevented from being accidentally released by a shock acting on the trigger. It will'therefore prevent the release of the trigger being occasioned by setting down the firearm suddenly.

If the notch of the hammer or end of the searbecomes so worn that the sear will not hold the hammer reliably, this safety-catch will, ,in

many cases, serve-to hold the .hammer seeurely. The ejectorG consists of .a' lever pivoted to the pin on which the lever D is' pivoted. It is arranged at one side of this lever. 'It is provided with a lateral projection, t, with which the forward end of the lever D comes in contact when the rear end of the lever is swung back. Then this occurs, the upper end of the ejector-lever is forced rearwardly,

40 so thata lug, u, with which it is provided,'

block' being provided with an inclined face, 11,

I whichlacts on the ejector-lever to accomplish this result. p I am aware-that it is not new in fire-arms to efl'ect the cocking of the hammerby the i -I am'also aware that a breech-block has ibeenprovidcd at the rear with a roller adapted to operate on the convex breast of a hammer.

Ido not therefore claim these features as of my invention.

The brcech-block in my fircarm has a canrlike'rcar protuberance acting lirectly upon the convex breast of the hammer. By the use ol'- .tl1is (-am like'nrotuberance I ani enabled to obviate the nccrssityl'or Before the trigger can be opthe interposition of a roller between the breech block and the hammer. I alsohave extensive surfaces in contact and provide for a longer wear of the parts. As the journals of aroller and cause lost motion, I obviate this objectionable feature in dispensing with the roller.

I hat I claim as my invention, an'ddesire t0 securehyll etters Patent, is

";In -afire-arm, a hammer having a con- .vexbreastyanu' a breech-block having a camlike rear portion whose under side extends approximately in the same direction as the upper portion of the breast of the hammer,

shiftedto expose the breechof the barrel its cam-like rear portion will act direct] against the convex breast of the hammer to effect the cooking of the hammer, substantially as specif d.

2. In a fire-arm, a hammer having a convex breast, and ashoulder atthe rear, aspring acting on the under side of the shoulder toimare apt in time to work loose in' their bearings i so combinedwthat when the breech-block ispel the hammer forward, and a breeclrblock' having a cam-like rear portion whose under side extends in approximately the same direction as the upper part of the breast of the hammer, and which is so combined with the hammer that when the breeclnblock is shifted Y tov expose the breech of the barrel its cam-like rear portion will act directly against the convex breast of the hammer to etl'cct the cocking of the hammer, substantially as specified.

3. In a fire-arm, the combination of a sliding breech-block, an ejector, a pin having a .fixed position in the lock'case, and a lever snugly fitting upon and fulcrumed by said pin, so as to be capable of a swinging motion thereon, and having a cam-like lug, provided with an L-shaped slot extending from it and connected to the breeclrblock by a pin pass-- ing through said slot, whereby the lever, af.er shifting the breech-block, can be moved farther, without affecting the breech-block, to actuate the ejector, substantially as specified.

4. In a fire-arm, the combination of a hammer, a trigger, and a safety-catch serving to lock the trigger when the hammer is cooked, pivoted to a support, so that its lower end will project in front of the trigger, and adapted to be released by pulling upon its lower end in the same direction as the trigger is pulled, in

order to eifect the release of the hammer, sub

stantially as specified. e i

5. In a fire-arm, the combination of -a ham mer, a trigger, and a safety-catch pivoted to the trigger, and serving to lock the trigger. when the lnunmcr is cocked, substantially as specified.

J. H. BROWN;

\Vitnesscsi T. J. KEANE,- JAgEsR. BOWEN,