US233100A - Lock for fire-arms - Google Patents

Description

2 Sheets-Sheet 1.

(N0 Model-)1 A. JOHNSON. Lock for Fire Arms.

N0. 233,100. Patented Oct. 12,1880.

lyvlbvessa gy i 42 FQ N PETERS, PHQTO-LITHOGRAP (No Model.) 2 Sheets-Sheet 2.

A. JOHNSON. Look for Fire Arms.

No. 233,100. Patented Oct. 12, I880.

- ing mechanism of my improved fire-arm.

UNITED STATES PATENT OFFICE.

ALFRED JOHNSON, OF NEW GENEVA, ASSIGNOR OF ONE-HALF OF HIS RIGHT TO SAMUEL MIER, OF ELK LICK, PENNSYLVANIA.

LOOK FOR FIRE-ARMS.

SPECIFICATION forming part of Letters Patent No. 233,100, dated October 12, 1880.

Application filed March 18, 1880.

T 0 all whom it may concern:

Be it known that I, ALFRED JOHNSON, of New Geneva, in the county of Fayette and State of Pennsylvania, have invented certain new and useful Improvements in Breech- Loading Fire-Arms; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

Figure 1 is a perspective view of the operating mechanism of my improved safety-lock. Fig. 2 is a vertical longitudinal section taken through the hammer and safety-catch. Fig. 3 is a vertical longitudinal section taken through the hammer and trigger-lever. Fig. 4 is a detail view of the hammer. Fig. 5 is a detail view of the safety-catch, and Figs. 6 and 7 are detail views of the trigger-lever.

Corresponding parts in the several figures are denoted by like letters of reference.

This invention relates to breech -loading tire-arms; and it consists in certain improve ments in the construction of the same, which will be hereinafter fully described, and particularly pointed out in the claims.

In the drawings hereto annexed, A represents the case or housing which forms the breech-block, and which incloses the operat- B is the barrel,which is pivoted at the front end of case A, and which is provided with a car tridgeextractor, O, mounted upon a longitudil'ially-moving slide, D, sliding in suitable bearings upon the under side of the rear end of the barrel. I

Upon the under side of slide D, atthe front end of the latter, are formed teeth or cogs E, engaging a segmental rack, F, formed upon a lever, G, pivoted between lugs upon the under side of the barrel. The rear end or arm of lever G is adjusted in a notch, H, formed in the casing or housing A, as shown. The barrel is locked by a spring-catch, I, engaging a notch, J, in the rear end of the barrel, and operated by a suitable thumbpiece.

It will be seen that when the breech is operated after firing the toothed end of lever G (No model engages the slide D, which is forced in an outward direction, thus ejecting the cartridgeshell.

The hammer, which is denoted by letter K, is, as will be seen, inclosed entirely within the housing A, the usual thumb-piece being dispensed with. To cock the hammer I employ a trigger-shaped lever, M, pivoted in the under side of the casing and provided with apivoted dog, L, adapted to engagea shoulder, N, formed on the front side of the hammer. To insure certainty of operation, a cross-piece or guard, O, is arranged in front of dog L, and the latter is held disengaged from the hammer, unless operated by lever M, by a flat spring, P, pressing upon the said lever in such a manner as to throw it in a forward direction. The upper rear corner of the hammer is provided with an inclined notch, Q, and a hookshaped notch, 1t, arranged side by side, as shown.

Upon a pin, S, arranged in suitable bearings in rear of the hammer, are pivoted the trigger-lever T and the safetycatch U, the former of which is provided at its upper front end with an inclined notch, V, adapted to en gage the notch Q in the hammer. The latter has a hook-shaped notch, \V, adapted to engage notch It. The rearwardprojecting arm of the safety-catch or leverUis provided with a laterally-projecting stud, X, against the un der side of which acts a suitably-arranged spring, Y, by which the said safety-catch is thrown or forced in a forward direction. for engagement with the hammer.

The triggenlever is provided with a downward-projecting arm, Z, which enters a notch or recess, A, in the upper end or head of the trigger B. The latter, which is pivoted in the lower side of easing A, is provided with a rearward-proj ecting arm, 0, upon the upper side of which acts a flat spring, D, (the trigger-spring) the tension of which upon the said arm may be regulated by the screw E, by which it is secured in the casing, and by a small set-screw, F, adj ustcd in a threaded orifice in the lower side of the casin g, an d adapted to press against the under side of spring D, thereby regulating the pull upon the trigger, which, by this mechanism, maybe adjusted with great nicety.

IOC

To throw the notch V of the trigger-lever into engagement with the notch Q. of the hammer when the latter is cooked, and at the same time cause the lower end of said trigger-lever to enter the notch A in the head of the trigger, the leverTis provided upon its front side with a forward-projectin g arm, G, which, when the hammer is cocked, is struck by the hammer-head, thereby adjusting the trigger-lever in the manner described.

To release the trigger-lever from the hammer on tiring the gun and hold it in position to engage the hammer when the latter is again cocked, I arrange a suitable spring, H, adjoining the said trigger-lever, and having its upper bentend inserted in a perforation in the downward-projecting arm Z, which it forces in a forward direction, thus throwing the notched upper end of the trigger-lever back, as described.

The lower end of the hammer, which projects rearward from the pin upon which the hammer is pivoted, is provided with a vertical recess, 1, in which is pivoted a T- shaped stirrup, J, the head of which is supported upon the mainspring S", the front end of which is notched or forked at K, in order to receive the shank of said T- shaped stirrup. By reason of this construction the rebound ot' the hammer, when the gun is fired, reacts upon the mainspring, which receives the shock. The upward motion of the mainspring is arrested by a cross-piece, 0

L is the firing-pin, in the construction and arrangement of which no novelty, however, is claimed.

To the upper side of the casing, in a suitable slot or recess formed in the latter, is pivoted a lever, M, the front end of which is adapted to bear upon the rearward-projecting arm of the safety-catch. To operate lever M it is provided with a stud, N, projecting upward through a suitable opening in the easing, and having a button or thumb-piece, O.

P is a guard, which incloses the triggers in the usual manner.

The operation of my invention will be easily understood by those skilled in the art to which it appertains.

hen the hammer is cocked it first engages the safety-catch and then the trigger-lever. In the event of an accidental discharge of the gun the safety catch, impelled by spring Y, will instantly arrest the hammer and hold it at half-cock. To discharge the gun it is only necessary to press the thumb-piece of lever M, by which the safety-catch is thrown back and out of action, and at the same time pull the trigger.

The lever M, it will be seen, is so arranged that its button 0 may be easily pressed by the thumb while the forefinger is employed to pull the trigger.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States- 1. In afire-arm, the combination, with a hammer provided at its upper rear corner with an inclined notch and a hook adjoining each other. of a trigger-lever and a safety-catch, pivoted side by side upon a shaft behind the hammer, said safety-catch being provided with a hook and actuated by a spring, so as to automatically engage and retain the hammer in case of accidental discharge, as set forth.

2. The combination of the hammer, notched at its upper rear corner, the safety-catch, pivoted on the same pin with the trigger lever and adapted to engage the notch in said hammer, as described, and a pivoted lever to disengage said catch, substantially as set forth.

In testimony that 1 claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

ALFRED JOHNSON.

Witnesses:

JOHN G. SCHNATTERLY, GERsHoM B. IloUGrI.

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