US923113A - Rebounding hammer for firearms. - Google Patents

Description

P. "o. CHADWIGK. RBBOUNDING HAMMER FOR FIEEARMS.

APPLICATION FILED PEB. 20. 1909'.

Patented May 25, 1909.

wwl

N mw@ 4 ATTORNEYS UNlTE @FAES ATNT FFC.

FRANCIS C. CHADWIOK, OF UTIGA, NEW YORK, ASSIGNOR'TO SAVAGE ARMS COMPANY, OF

' FRANKFORT, NEW YORK.

REBOUNDING HALTE/IER FOR FIREARMS.

Specification of Letters Patent.

Patented May 25, 1909.

Application filed February 20, 1909. Sera1 No. 479,275.

vTo all whom it may concern:

provide arebounding firing-pin-hammer for fire arms, which is simple in construction, eliicient, and well adapted to meet the requirements of such a device, particularly in the character of fire arm herein illustrated and described.

Figure 1 shows a vertical longitudinal sectional view of the frame portion of a fire arm embodying the features of my present improvement. In this iigure the firing-pinhammer is shown in its retracted or rebounded position. Fig. 2 Vis a similar longitudinal sectionV of the fire arm bolt only, showing the ring-pin-hammer in the striking position. Fig. 3 is an enlarged detail, the parts so far as shown corresponding in position to that shown in Fig. 1. Fig. 4` is a similar enlarged view showing a section taken on line 1 4 of Fig. 3.

Referring to the reference letters and gures in a more particular description, 10 indicates the frame of the re arm, 11 the breech bolt which has a rising and falling movement at the rear end to engage and disengage the breech-up shoulder 12, as well as a longitudinal movement t0 open and close the breech, the breech bolt being operated by the finger lever 13 having a curved arm 14: extending to and engaging with the breech bolt. The breech bolt is provided with a longitudinal opening extending from the rear end through to the forward end, the extreme forward end, however, being closed in so as to provide only a small perforation. This longitudinal opening in the breech bolt receives the liring-pin-hammer 15, which consists in the main of a cylindrical spindle or stem having a head 15a at one end tting and sliding in the forward end of said longitudinal opening, and carrying the striking point 15b, and having at the rear end a hook-like piece 15c adapted to engage with the sear 16 to secure or hold the hammer in the cocked position. The rear end of the hammer spindle slides in a bushing or loose bearing 17. rlhe loose bearing fits in and closes the rear end of the opening in the breech bolt which receives the hammer. It is held in position by a cross pin 18 and permitted a limited longitudinal movement by the pin 18 passing through an elongated slot or recess 19 in the lower side of the bushing. The main spring 20 is introduced and confined between the shoulder at the rear of the head 15a and the front end of the loose bearing 17. The main spring 20 and the loose bearing 17- are together confined on the spindle portion of the hammer by being confined between the shoulder at the rear of the head 15EL and a shoulder at 21 on the rear Y end of the hammer adjacent to the hook 15.

Located in a suitable recess partially in the underside of the loose bushing 19 and partially in the body of the breech bolt at the bottom of the opening which receives the bushing, is the retracting spring 22. As to its forward end this spring has a bearing on the shoulder in the breech bolt which determines one end of the recess, and at the other end the spring 22 has a bearing at the top in the shoulder which determines the rear end of the recess4 in the bottom of the loose bearing 17.

7 hen the hammer is released by the sear, it is impelled forward by the main spring 20 until the shoulder 21 comes in contact with the rear end of the loose bushing or bearing 17.V This engagement takes place substantially at the same time that the point of the firing pin is at or just within the front face of the breech bolt. The momentumof the firing pin then carries the loose bearing 17 forward the limited distance necessary to project the point of the firing pin to strike the cartridge primer. During this forward movement under momentum the spring 22 is overcome, this being comparatively a small light spring. When the hammer has come to rest on its forward movement, the retracting spring 22 then becomes operative to slide the loose bearing 17 rearwardly, and in connection with it the hammer as a whole, including the main spring, and producing the result desired, to wit: the withdrawing of the point ofl the firing pin inside of the front face of the breech bolt. Vhen the hammer is cocked, the head portion 15a is, of course, drawn fart-her back from the forward end of the longitudinal opening in the breech bolt, but the position of the loose bearing 17 remains the same, this additional cooking movement resulting only in the compression of the main spring in an obvious manner.

Then cocked the main spring is restrain ed on one end by the pin 18 and at the other end by the hammer hook 15c engaging with the sear 16. The loose bearing 17 will preferably be given quite a loose fit in the rear end of the opening which receives the hammer, whereby it will have a tendency to move freely; but in addition to this the blow of the hammer on the bushing or loose bearing when it falls is so vigorous that any tendency to stick or bind will be overcome.

lt is evident that modifications and changes in and from the construction described may be made without departing from the spirit of my invention.

Claims:

1. The combination in a firearm of a breech bolt, a firing pin, a loose bearing mounted in the breech bolt and a main spring, the spring and bearing confined between shoulders on the tiring pin, means for securing the loose bearing with a limited amount of longitudinal movement in the breech boltand a retracting spring operating on the bearing, substantially as set forth.

Q. The combination in a fire arm of a breech bolt, ay firing pin mounted in the breech bolt, a loose bearing in which one end of the firing pin slides and a head on the other end, the main spring confined between the loose bearing and the head, a shoulder on the tiring pin limiting the movement of the tiring pin in the loose bearing, means securing the loose bearing in the breech bolt so as to permit a limited longitudinal movement, and a spring operating to retract the loose bearing and the firing pin, substantially as set forth.

3. The combination in a fire arm of a breech bolt having a longitudinal opening, a tiring pin hammer mounted in said opening to move longitudinally, a main spring and loose bearing mounted on the firing pin hammer, the loose bearing received in the rear end of the opening in the breech bolt, means securing said loose bearing to the breech bolt with a limited longitudinal movement, and a spring operating to retract the hammer and said loose bearing, substantially as set forth.

fl. The combination in a fire arm of a breech bolt having a longitudinal firing pin receiving opening, a firing pin mounted in said opening for longitudinal movement, a main spring coiled about the firing pin, a loose bearing in which the rear end of the firing pin is mounted, said loose bearing being received in the rear end of the opening in the breech bolt, means securing said loose bearing with a limited amount of longitudinal movement, and a spring for retracting the bearing` and tiring pin, substantially as set forth.

5. The combination in a fire arm of a breech bolt having a longitudinal tiring pin receiving opening, a firing pin mounted in said opening for longitudinal movement, a bushing fitting the rear end of said opening and held in the breech bolt with a limited longitudinal movement, and a retracting spring arranged in a recess partially in the bushing and partially inthe breech bolt, substantially as set forth.

In witness whereof, I have affixed my signature, in presence of two witnesses, this 8th day of February, 1909.

FRANCIS C. CHADVICK.

fitnesses EMMA S. Hnssn, SARAH E. CLARK.

Images