US620354A

US620354A - pohlit

Info

Publication number: US620354A
Authority: US
Publication date: 1899-02-28
Anticipated expiration: 1916-02-28

Description

a mmm mn. 1u, mu.

PERCUSSION LOCK FUR BREECH LOADING GUNS.

(Application led Aug. 11, 1898.)

(No Model.)

2 Sheets-Sheet I.

t H G l um@ k D galcmeafwV witnesses. Inventar;

A a, Z POZLZ/l/' W A'r W YM/MM Wtorhey.

No. $0,354. Patented Feb. 2a, |899. c. PuHLlT.

PERCUSSION LOCK FOR BBEECH LOA-DING GUNS.

(Application led Aug. 11, 1898.)

(No Model.) 2 Shouts-Sheet 2.

Fig. 6. Fig. 7 m C e l f K@ Nits `Sintes AfrnNr @Erica CARL POHLIT, OF ESSEN, GERMANY, ASSIGNOR TO FRIED. KRUPI, OF SAME PLACE.

PERCUSSION-LOCK FOR BREECH-LOADING GUNS.

SPECIFICATION forming part of Letters Patent No. 620,354, dated February 28, 1899. Application filed August 1l, 1898. Serial No. 688,341. (No model.)

To ctZZ whom it may concern.

Be it known that I, CARL POHLIT, a citizen of the German Empire, residing at Essen, Rhenish Prussia, Germany, have invented an Improvementin Percussion-Locks for Breech- Loading Guns, of which the following is a specification.

This invention has reference to improvements in percussion-locks for breech-loading guns; and it consists, essentially, of a firinglock the construction of which is to prevent accidental firing of the gun.

In modern breech-loaders the iiring-lock is generally cocked by the motion of the handle for opening and closing the breech or by the motion of the breech-block itself, and for this reason the firing-lock is always at full-cock when the gun is loaded. Should the proper securing of the firing device be forgotten or the sear or other parts be broken, accidents are liable to happen.

The object of the invention is to prevent such accidents; and it consists, essentially, in so arranging the iiring-lock that even when the gun is loaded the lock is not cocked, but, on the contrary, is only cocked when the trigger is pulled by the lanyard.

Another advantage of the improved lock is that it requires no additional spring besides the one actuating the iiring-pin.

The nature of the invention will best be understood when described in connection with the accompanying drawings, in which- Figure 1 represents a side view of the breech end of a gun, the firing device being in position at restbefore firing. Fig. 2 is a horizontal section of Fig. 1 through the center of the gun, part of the gun and block being broken away and part of the locking device being in elevation. Figs. 3 and 4 are elevation and section corresponding to Figs. l and 2, showing the position of the i'iring-lock after firing. Fig. 5 is a plan of the firing-lock at full-cock, the firing-pin being ready to be thrown forward and parts of the breech-block and gun being in section. Figs. 6, 7, and 8 are detail views of the several parts of the iring-lock.

Similar letters of reference designate correspondingparts throughout the several views of the drawings.

In the drawings, the letter Gdesignates the gun; M, the breech-block; II, the hammer or firing-pin inserted into the breech-block, and D the screw for locking the breech, which screw is provided with a curved flange h, having a straight face g.

S is a spring inserted into the hammer Il and abutting against a cap screwed into the breech-block.

The iiring mechanism is placed into a recess of the breech-block and consists, in addition to the hammer II, of the cooking-lever B, the tumbler C, and the trigger A.

The cooking-lever B (shown in detail in Fig. 6) has two arms Z and f and is pivoted to a pin h, secured to the breech-block. The end of the inner arm Zof the cocking-lever B engages a notch n of the hammer H and acts against the end face of the notch, as shown in Figs. 2, 4, and 5.

The trigger A is shown in detail in Fig. S. It has a rib t', an elongated notch m, a hollow cylindrical projection a, fitting on a pivot d, secured to the breech-block, and an eye 7a for attaching the lanyard. The tumbler C is shown in detail in Fig. 7. It is pivoted on the projection d of the trigger and is provided with a lateral cam c and with a lug c on its lower side tting into the notch m of the trigger, so as to allow the tumbler a limited turning movement on the projection d of the trigger.

The operation of the iringlock is as follows: The hammer is cocked by the cookinglever B through the action of the trigger A and the tumbler C. When the breech is closed, the lock is in the safety position, the several parts being in the positions shown in Figs. 1 and 2. The small tension of the hammer-spring S, acting upon the hammer I-I and through it on the arm Z of the cooking-lever B, forces the hook-shaped end of the arm f against the cam e of the tumbler, so as to turn the lug c of the tumbler C against the inner end of the elongated notch m and the outer end of the triggerA against the outer face of the breechblock, as shown in Fig. 2. The position of the parts above described and shown in Fig. 2 prevents the point of the hammer passing forward beyond the position shown in Fig. 2,

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the point being held within the breech-block, so that it cannot touch the cartridge. W'hen the lanyard attached to the eye k of the trigger A is pulled, the latter is turned around the pivot d, taking along the tumbler' in View of the lug c, which bears against the inner end of the notch fm. The cam e of the tumbler C presses against the hook-shaped outer end of the armf of the cooking-lever B and causes it to be thrown forward, so as to throw the arm Z and the hammer II to the rear, compressing the spring S. When by further turning of the trigger A the cam is tripped from the end of the arm f, as shown in Fig. 5, the spring S throws the hammer H forward, so as to fire the cartridge, and the trigger bears against the rear wall of the recess of the breech-block. During the forward motion of its arm Z the cooking-lever byits arm 2o f turns the tumbler around its hollow pivot d untilits lng c bears against the outer end of the notch m of the trigger A. The several parts of the ring-lock are now in the positions shown in Fig. 4, the point of the hammer slightly projecting beyond the forward face of the breech-block. By the tension of the spring S the trigger is now held at rest against the. rear wall of the recess in the breech-block, as it was before held against the outer surface of the breech-block.

It is readily seenV that the tumbler C might be omitted and the cam e be rigidly connected to the trigger A. In this case, however, the part of the motion transmitted by the forward motion of the hammer to the tumbler C alone would be transmitted to the trigger. The latter would require a greater throw than before, and since the mass of the trigger and its moment of inertia are greater than those of the tumbler the hammer-spring would have to be much stronger to produce the desired effect. For this reason the use of a tumbler having a limited motion independent of the trigger offers considerable advantages. Vhile a vertical projection or lug on the tumbler engaging a slot in the trigger appears to be the most compact arrangement for limiting the motion of the tumbler on the trigger, other means may be used, such as a lateral projection on the tumbler, limited in its motion by vertical stops on the trigger.

When, after firing, the lock-screw D is turned for releasing and opening the breechblock, the face g of the flange h of the screw D, Figs. l, 3, and 4, pushes the trigger back into its original position, while the operations of withdrawing and advancing the hammer are repeated substantially in the manner described, the only difference being that the hammer is advanced very gradually, owing to the position of the tumbler, which latter, after having passed the end f of the sear B, is at first placed almost at right angles to the contact-surface of the lever-arm f. It is only toward the end of the motion of the trigger admitthat the tumbler comes into a position ting a turning motion to be imparted to the tumbler and to the trigger through the action of the mainspring. Consequently the hammer is not capable of projecting the tumbler and the trigger by means of the cooking-lever precipitately into the position of rest, but is compelled to follow in its own advance the motion of the trigger and the tumbler. It is only at the last moment of its forward motion that, as already observed, the hammer can exert a rotary action upon the tumbler and force it, together with the trigger, into its initial position, Fig. 2. In this position of the parts the point of the hammer is again located within the breech-block, so that the latter can be opened without danger to the point.

What I claim as new isl. Inabreech-loadinggum the combination with the breech-block and the spring-hammer located therein, of a trigger provided with a cam, and a double-armed cooking-lever, both pivotally held within a recess of the breechblock, the inner arm of the cooking-leverengaging the hammer and the outer arm actuated by the cam of the trigger; so that, by pulling the trigger, the hammer is first cocked and the outer arm of the cooking-lever then tripped so as to release the hammer, substantially as described.

2. In abreech-loadinggun, thecombination with the breech-block and spring-hammer located therein, of a trigger, pivotallyheld within a recess of the breech-block and carrying a tumbler pivoted centrally to the pivot of the trigger, a projection on one of these parts so placed between stops as to allow a limited turning motion of the tumbler in relation to said trigger, and a double-armed cooking-le- Ver actuated by the tumbler, and actuating thehammer; by pulling said trigger, the hammer being first cocked, then the cooking-lever tripped and the hammer released, substantially as described.

3. In a breech-loading gun, the combination with the breech-block and ii rin g-hammer and its spring, of a double-armed cooking-lever B, trigger A and cam c connected thereto, the outer arm of the cocking lever B bearing against the cam of the trigger in both extreme positions of the trigger and transmitting the force of the spring to the trigger, substantially as described.

4. In a breech-loading gun, the combination with the breech-block, the tiring-lock with its trigger and the screw for locking the breechblock, of a flange h on the lock-screw bearing against the trigger, and adapted to turn the trigger to its normal position of rest by opening the lock-screw, substantiallyas described.

In testimony that I claim the foregoing as myinvention I have signed my name in presence of two subscribing witnesses.

CARL POIILIT.

Witnesses:

GEO. P. PETTIT, WILLIAM EssnNwEIN.

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