US1324493A - burton - Google Patents

Description

F. F. BURTON. BOLT ACTION GUN. APPLICATION FILED AUG.9. I919.

IiTlllIl Patented Dec. 9, 1919.

3 SHEETS-SHEET l- F. F. BURTON.

BOLT ACTION GUN.

APPLICATION man AUG.9. 1919.

Patented Dec. 9, 1919;

3 SHEETSSHEET 2.

F. F. BURTON. you ACTION cum. APPUCATION FILED AUG-9| I919.

Patented Dec. 9,1919.

3 SHEETS-SHEET 3 J said drawings and State of Connecticut, have D. sTATEs PTENT oFFICE.

FRANK r. BURTON, 0F MOUNT CARMEL, CONNECTICUT, AssreNoR' T0 WINCHESTER' BEPEATING ARMS 00., OF NEW HAVEN, CONNECTICUT, A CORPORATION.

To all whomi-t may concern:

Be it known that I, FRANK F. BURTON, acitizen of the United States, residing at Mount Carmel, in the county of New Haven invented a new and useful Improvement in Bolt-Action Guns, anddo hereby declare the following, when taken in connection with the acco panying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same,and which constitute part of this application, and represent, in-

Figure 1 a broken plan view of a boltaction gun constructed in accordance with my invention.

Fig. 2 a right hand side view thereof.

Fig. 3 a view of the gun in partial vertical central longitudinal section on the line 33 of Fig. 1, showing the gun as fired.

Fig. 4 a corresponding view showing the gun as cocked.

Fig. 5. a corresponding view showing the gun with its firing-pin retracted and locked by the safety.

Fig. 6 a broken view in left hand elevation showing the rear end of the receiver of the gun with the safety in its upright and operative (position, the handle and-bolt being remove Fi 7 a view' in transverse section onthe line 7 of Fig. 1,the safety being shown in its operative position and the bolt-handle being broken away.

Fig. 8 a corresponding view with the safety in its ino erative position.-

Fig. 9 a detaclied view in side elevatio of the safety, shown on an enlarged scale.

Fig. 10 a view thereof in rear elevation.

Q Fig 11 a view-thereof in front elevation.

My invention relates to bolt-action guns, and more particularly to,improved safety devices therefor, the object being to produce a simple, com act, durable and reliable mechanism in w ich a safety axially mounted in the receiver has the two-fold function of locking the firing-pin' in its re-' tracted position, and of locking the bolthandle in its closed position.

With these ends 111 view, m invention consists in e bolt-act on 31 1. 1B which It BOLT-ACTION GUN.

Specification of Letters Patent. Patented Application filed August 9, 1919. Serial No. 316,391.

' posed between t Dec; 9, 1919.

safety axially mounted in the receiver operates as a cam to retract the firing-pin from en agement with the nose of the sear.

y invention further consists in a boltaction gun in whichmounted in the receiver, cams the firingpin out of engagement with the nose of the sear and at the same time locks the bolthandle in its closed position.

My invention further consists in a bolt-actiongun having certain details of construction as Wlll be hereinafter described and pointed out in the claims.

In carrying out my invention as herein shown, my improved axially mounted safety comprises a wing-like handle 8 radially 01fsetting from a substantially circular head 9 having a central opening 10 receiving the rear end 11 of a rock-shaft 12 to which the said head is secured by a transverse pin 13. The rearwardface of the head is shaped to form a cam 14 which co-acts with the adacent portion of the forward face of an annular flange 15 formed at the forward end a head 16 on sponds in width to the hub 21 of the bolthandle 22, the trunnions 18 and 19 having bearing in a suitable bearing-hole forme in the left hand wall of the receiver 23 parallel with the axis thereof, whereb the safety is axiall mounted therein. nt ere head 9 and the trunnion 18 of the rock-shaft, is an annular positioningshoulder 24'having beveled positioningrecesses 25 and 26 connected by a shallowguide-groove 27, the said recesses and groove receiving a spring-actuated plunger 28 located in the'receiver and serving when entered into the said recesses to hold the safety in itstired positions. safety is turned down into its retired or inoperative position in which it is shown in Figs. 1 and 8. At this time its handle 8 is entered into atransverse notch in the lefta safety axially the rear end of the firingpin 17 and, provided for manually retractmg operative or inoperativeor re-- Normally my improved shown. At this time, also, the segmental clearance-slot 20 of the-rock-shaft 12 of the safety coincides, as shown in Fig. 8, with the curved wall of the transversely arranged passing locking-slot 29 formed in the rear end of the receiver 23 for the reception of the hub 21 of the bolt-handle 22 which is located at the rear end of the bolt 30 which has linear movement in the chamber 31 of the receiver.

When the safety is lifted from the retired position in which it is shown in'Fig. 8, into its operative position in which it is shown in Fig. 7, its firing-pin retracting-cam 14 engages with the forward face of the flange 15 of the firing-pin retracting head 16 and positively cams back or retracts the firing-pin for a sufficient distance to entirely disengage its sear-notch 32 from the nose 33 of the sear 34, which latter is hung upon a pin 35 through its forward end and mounted in the receiver 23. The clearance-space 36 shown in Fig. 5, represents the above described rearward movement of the firing-pin under the. action of the cam 14 of the safety. A helical sear-spring 37 is arranged to exert a constant effort to lift the sear-nose 33 into osition to engage with,the' sear-notch 32.

he trigger 38 which is hung from the sear on a pin 39, is formed with an upstanding cam-like lug 40 which engages with the under face of the bolt 30 and acts as a fulcrum for depressing the rear end of the sear against the tension of its spring 37, so as to dlsengage its nose 33 from the sear-notch 32 andthusrelease the firing-pin 17 to the action of its spring 41.

The hub 21 of the bolt-handle 22 is formed with a combined handle-locking, recoil-talc ing and handle-guide lug 42 (Fig. l) which, when the bolt-handle is in its elevated position, is entered into a longitudinal guideslot formed in the bottom of the tapering termlnal 44 at the rear end of the receiver 23, the rear upper corner of which is cut away downward and rearwardly to form the said terminal which is virtually separated from the body of the receiver by the transversely arranged locking-slot 29 receiving the hub 21 of the bolt-handle, which is held inits elevated position during the longitudinal movement of the bolt into its open andblosed o sitions by. the engagement of the said i ug 42 with the side walls of the slot 43, this being the guide position of thesaid lug 42 of the hub 21 of the bolt-handle. other hand, when thebolt-handle is rocked from left to right, the rear face of the said lug 42 engages with the rear wall of the locking-slot 29 at a point to the left of the axis of the bolt and lug assists in taking the shock of recoil which is also taken by the rear face of the said handle-hub 21 which at the same time engages with the said rear'wall of the slot at a point laterally opposite the engagement of edge with a locking-groove 45 On the in this position the said right hand 'sideof the axis of the bolt. The In 42 has therefore handle-guiding and re-' coil-taking functions, dependent upon the position of the handle.

In addition to these two functions, the said lug 42 has a handle-locking function for which purpose it is formed in its outer which receives the slotted portion of the rock-shaft of the safety, as shown in Fig. 7, and thus positively locks the handle in its closed and locked position. This handle-locking function of the lug 42 is performed when the safety is lifted from its retired to its operative position after the handle has been rockedfrom left to right into its fully closed position. The safetyin this position, locks the handle in its closed and locked position.

The operation of my improved safety is as follows: Assuming the gun to be cocked, as shown in Fig. 4, the sear-nose 33 will be engaged with the sear-notch 32 with the firlng-pin spring 41 under tension. Now if the safety is raised by its'handle 8 from its depressed or retired position as shown in retract the firing-pin for a distance represented by the clearance-space 36 of Fig. 5,

whereby the sear-notch 32 of the firing-pin will be entirely disengaged from the sear-nose 33. Meanwhlle, as the safety swings from its inoperative to its operative position, the clearance-notch 20 of its rock-shaft will be carriedout of line with the rounded end of the guide-lug portion of the locking-groove 45 in the shown in Fig. to positively lock closed and locked position thereof. It will thus be seen that the safety not only operates to positively retract the firing-pin, but also to positively lock the bolt-handle in its recoil-taking position, whereby a double measure of safety is provided. I

For the. reception of the head 9 of the safety, the receiver 23 is formed in its left hand wall, with a trans zerseslot 46 producing a shoulder 47 preventing the rearward displacement of the safety which is assembled by first insertin its head 9 into the said slot 46 after which t 1e rock-shaft is inserted into its axial bearing-hole in the receiver and pushed forward therein until its forward end is fully entered into in the said head 9. The head and shaft are then pinned together by the in 13.

When the firing-pin has con cammed back by the safety and is held thereby in its retiredposition, also functioning as a positive lock for the shaft will be entered into the end of the lug, as

at which time the safety is- 42 and the adjacent uncut 7 wherebv the safet operates the bolt han is in the ill the hole 10 bolt-handle, it is impossible to fire the gun, since the control of the firing-pin is then entirely under the safety; At this time, the premature or accidental movement of the sear by the trigger has'no effect, and can have no effect on the firing-pin. I also wish to call attention to the fact that the gun is safe against premature firing during the throwing off of'the safety, since by virtue of its cam 14, the eflect of turning the safety into its inoperative position is to gradually let the fir'ng-pin forward until its sear-notch is brought into contact with the sear-nose.

As herein shown the bolt-handle is solid 'with the bolt which rotates as the handle turns, but my improved safety would operate in the same way if used in conjunction with a bolt-handle mounted to turn upon a non-rotatable bolt, rotatable and non-rotatable bolts being well known in guns of the class to which my lIlVBIltlL 1 relates. I am aware that a safety having the same general purpose as the safety of my invention has heretofore been carried by the bolt itself, as

for instance, upon the S. Govt. rifle, mod. 1903. Such construction, however, requires a special form of bolt which in its adaptation to this form of safety is increased in weight, in size and expense and difliculty of initial construction. These objections are avoided under my invention by actually "mounting the safety in the receiver whereby I am enabled to dispense with forming a rear end of the bolt as has commonly been done heretofore. I do not, therefore, claim a safety for the purpose described but only a safety when actually mounted in the receiver in position to coact directly with the firing-pin installed within the bolt and with the handle by which the bolt is operated.

I claim 1. A bolt-action gun having a receiver.

having a guide-slot, a bolt, a bolt-handle provided with a guide-lug entering the. said guide-slot in the receiver, a firing-pin, a. scar, and a safety axially mounted in the receiver and comprising a head having a cam to coact with the firing-pin for the retraction of the same and having a'rock-shaft formed to engage with the said guide-lugof thebolthandle for locking the said handle in its closed position when the firing-pin has been retracted by the said cam.

2. A bolt-action gun havinga receiver, a"

bolt, a bolt-handle having a gulde-lug formed in its end with a locking-groove, a fir ng- -pin, a sear, and a safety axially mounted in the receiver and having-a cam for retracting the firing-pin and a rock-shaft. shaped to enter the said locking-groove of the guide lug for positively locking the handle in its closed and locked position.

3'. A bolt-action gun having a receiver, a bolt, a bolt-handle having a guide-lug, a firing-pin, and a safety having a cam for retracting the firingp1n and a rock-shaft formed with a clearance-slot to clear the said guide-lug and axially mounted in the receiver on opposite sides of the'saidclearance-slot.

In testimony whereof, I have signed this specification in the presence of two SllbSCIlbing witnesses. v

, FRANK F. BURTON.

Witnesses: f

THOMAS C. JOHNSON, FREDERIC C. EARLE.

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