US1322227A - burton - Google Patents

Description

F. F. BURTON.

BOLT ACTION GUN.

APPLICATION FILED Auam, lala.

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1,322,227. l Y Patented Nov. 18, 919.

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il l 1| "I l I/ Q g 11 A l n i Q a u F. F. BURTON. BOLT ACTION GUN.

APPLICATION FILED AUG.I1| 1919.

Patented Nov. 18, 1919.

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BOLT ACTION GUN.

APPLICATION FILED AUG.II, I9I9 Patented Nov. 18, 1919.

4 SH EETS-SHEET 3.

v`F. F. BURTON.

I BOLTv ACTION GUN. ArPujcATloN FILED Aue.|1.|919.

Patented Nov. 18, 1919.

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- iran srarnsA PATENT orrron FRAN K F. BURTON, 0F IVLOUNI` CARMEL, CONNECTICUT', ASSIGNOR TO WINCHESTER REPEATING- ARMS CO., 0F NEWV HAVEN, CONNECTICUT, A CORPORATION.

BOLT-ACTION GUN.

To alli/whom t may concern.'

Be it known that I, FRANK F. BURTON, a`

@said drawings constitute part of this application, and represent, in-v Figure 1 a plan view of a bolt action gun embodying my invention, with the barrel broken away at the breech, and the gun shown as closed and fired. A

Fig. 2 a corresponding view in side elevation. l

Fig. 3 a broken view of the gun partly in right hand side elevation, and partly in vertical longitudinal section, fshowing the gun ready for firing, closed and cocked.

Fig. 4 a broken detail view, partly in elevation and partly in vertical longitudinal section, showing the method of removing the bolt from the receiver preparatory to cleaning the barrel from Vits breech end.

Fig. 5 a detached Aplan view of the receiver with the bolt removed and the barrel broken away, but with 'the loading-platform in position within the receiver.

Fig. 6 a rear end view thereof. n

Fig. 7 a broken view in side elevation of the forward end of the bolt.

Fig. 8 a view thereof in front elevation.

Fig. 9 a corresponding view with the extractor removed.

Fig. 10 a detached edge view of the extractor.

Fig. 11 an underside view thereof.

Fig. 12 a rear end view thereof.

Fig. 13 a detached plan view of the loading-platform.

Fig. 111 an end view thereof.

Fig. 15 an edge view thereof. Y

Fig. 16 a view of they gun 1n transverse Section on the linge 16-16 of Fig. 5, looking fors ward.

Fig. 1f? a vdetachedplan view of the sear.

Fig. 18. an end view thereof. Fig. 19 a detached sidel view of the trigf der'. Y ,Y

b Fig. 20 an edge view 'thereon Specification of Letters Patent.

Patented Nov. 18, 1919.

Application led August 11, 1919. Serial No. 316,520.

Fig. 21 a broken View in rear elevation of the bolt-handle.

Fig.r22 a broken side view thereof. f

kMy invention relates to an improved bolta'ctlon gun of fthe type in which the bolt is locked at its rear end, at points on laterally opposite sides of its axis, the object being to produce a simple, cheap, reliable, convenient, safe and effective arm of the character described'. Y

l/Vith these ends in view my invention consiste in a bolt-action gun having certain details of construction and combinations of parts as will be hereinafter described and pointed out in the claims.

In carrying out my invention as herein shown,the receiver 17 is formed near its rear end, with a transverse locking-slot 18, and nearits forward end with a transverse cartriClge-lolacling and cartridge-ejecting opening 19. The said locking-slot 18 receives the Vlocking-shoulder 2O and locking lug 21 of the bolt-handle 22 which terminates'in a ball 23. The said shoulder 20, lug 21, and handle 2.2-, are made integral or rigid with the rear end of the bolt 24, which, as shown, has rotary and linear movement in the receiver 17, the upper vrear corner of which is cut away so as to produce a tapering receiverend 9.5 containing the rear wall of the locking-slot 18 aforesaid.

The lleft-hand end of the forward wall of the locking slot 18 merges into a bolt-retracting or cartridge-retracting cam 26, which co-acts with the'forwardedge of the lock* ing-shoulder 20 of the bolt-handle in camming back the bo'lt 24 from its fully closed position, when the bolt-handle is lifted from right to left from its closed into its open position, whereby the spent cartridge in the chamber 27 of the' barrel Q8 is started back preparatory to being fully extracted by the' right from its upright or open position intoits` depressed or closed position.

ll/Vhen the bolt is closed and locked, thev shock of recoil is taken by the engagement of the rear face of the lug 21 and the rear face of the shoulder 20, with the rear wall of the locking-slot 18 at points on laterally opposite sides of the axis of the bolt, there being no opportunity for taking the shock of the recoil in the vertical plane as common in many boltfac-tion guns, for the reason that the rear upper corner of the receiver is, in my improved gun, cut away.

For facilitating the loading of the cartridge into the chamber 27, I employ what, for convenience, I shall term a rocking, cartridge-loading platform 30 (Figs. 13, 14, 15), which is segmental in cross-section (Fig. 14), which conforms inA curvature to the bolt-chamber 31 in the receiver 17, and which is located in the forward end of the chamber 31, in that portion thereof intersected by the cartridge-loading and cartridge-ejecting opening 19 which gives free access on either side to the said platform the upper face of which is traversed by inclines forming a longitudinal cartridgetrough 32 opening downward into a slot 33, which receives a coupling-lug 34, depending from the forward end of the bolt 24, the lower face of the forward end of which is transversely cut away, as at 35 to adapt it to fit over the platform 30, which complements it by virtually filling out its forward end. The lug 34 rides back and fo-rth in its slot33, as the bolt is reciprocated and turns the platform with the bolt when the same is rotated. The said slot 33, also provides clearance for the firing-pin 36. The platform is formed in its periphery with an undercut circumferential slot 37 receiving a screw 38 mounted in the receiver and holding` the platform against endwise displacement, while permitting it to rock upon its longitudinal axis with the rotation of the bolt. The inwardly inclined walls of the trough 32 are separated from the slot 33 of the platform, by parallel chamfers 39, the stops at the rear ends of which form ejection-shoulders 39L against which the rims of the cartridges are impinged as the cartridges are drawn rearwardly through the trough during the opening movement of the bolt, at which time the platform is at rest. When the platform is exposed by the retraction of the bolt it fills, as it were, the lower portion of the forward end of the bolt-chamber 31 up to the level of the lower wall of the cartridgechamber 27, and makes the loading of small cartridges singly by hand, very easy. At this time, the sides of the trough 32 are just below the horizontal edges 40 (Fig. 1) produced in forming the opening 19.

The locking-lug 21 of the bolt-handle rides back and forth in a guide-slot 41 in the receiver-end 25, during the rearward and forward excursion of the bolt, whereby the handle is maintained at such time in its elevated position, due to the engagement of the sides of the lug with the side walls of the said slot.

For holding the handle yieldingly in its depressed and closed-position, I locate a wedgedeshaped handle-holding cam 42 just within the forward end of the extractor 43 which is mounted upon the forward end of the bolt, so as to permit the bolt to be rotated under it, the extractor having linear movement with the bolt but not rotary movement with it. For linear movement with the bolt, the extractor is formed with an undercut lug 44 fitting into an undercut trans-Y verse slot 45 in the bolt. The extractor is held against rotation with the bolt by letting it into a groove 46 (Fig. 6) leading out of the bolt-chamber 31 in the receiver, while its forward end is additionally held, when the bolt is closed, by its entrance into a notch 47 formed in the extreme end of the barrel as shown in Fig. 16. For co-action with the handle-holding ca1n42, the bolt is formed at its forward end with a wide clearance notch 48, and with a locking-notch 49, the former being wide enough to permit the free rotation of the bolt with respect to the extractor v43 for a distance which represents the movement of the bolt-handle from its vertical position, to very nearly its full depressed position. However, just before the bolt handle reaches its fully closed position, the cam 42 rides out of the notch 48, up over the sloping left hand wall thereof, and then over into the locking-notch 49, in which the said cam is held by the tension of the extractor 43, with sufcient force to hold the handle yieldingly in its fully closed position, from which it must be lifted with the exertion of enough effort to spring its extractor to let the cam 42 ride out of the notch 49.

The firing-pin 36, which is manually re tracted by a firing-pin head 50 at its rear end, is formed with a cocking notch 51 and a clearance-notch 52. The notch 51 receives a Sear-nose 53 formed on the upper rear corner of an upstanding scar-lug 54, the forward edge of which co-acts when the bolt reaches the limit of its rearward excursion, with the forward wall of a sear-clearance slot 55 in the lower face of the bolt, to prevent the bolt from being withdrawn from the receiver, the sear being held in this position by means of a helical Sear-spring 56 set in a hole 57 in its depending forward end, and engaging with the lower face of the relceiver, as shown in Fig. 3. The sear 58 which is located within a slot 59 in the receiver and hung upon a pin 60 therein, is formed with a slot 61 receiving the trigger 62, which is hung upon the pin 63, in the sear. A rounded lug 64 formed upon the u per edge of the trigger and extending a ove the seal', engages with the lower face of the bolt and acts as a cam when the trigger is pulled for camming the sear downward suiiiciently to retract the scar-nose 53 from engagement with the scar-notch 5l of the firing-pin. To provide for depressing the sear suiiiciently to clear its lug 54 from the forward wall of the slot 55 in the ibolt and so permit the removal of same for cleaning the barrel fro-m the breech, I form the trigger with a rearwardly and upwardly projecting arm 65 which engages with the lower face of the receiver-terminal 25 when the trigger is pulled in excess of the amount required to release t-he firing-pin.

I claim A l. A bolt-action gun having the boltchamber of its receiver intersected at its forward end by a cartridge-loading and cartridgeejecting opening, a rotary bolt having the lower face of its forward end cut away, and a cartridge-loading platform located in the forward end of the bolt-chamber, 'and coupled with the bolt for rotation therewith, whereby when the bolt is open the platform is in a position for facilitating the loading of the cartridges into the barrel of the gun.

2. A bolt-action gun having a receiver, a rotary bolt, and a cartridge-loading platform co-acting with the forward end of the bolt and rotating therewith, but not having linear` movement therewith, for facilitating the loading` of the gun.

3. A bolt-action gun having the boltchamber of its receiver intersected at its rear end by a transverse locking slot and near its forward end lby a transverse cartridge-loading and cartridge-ejecting opening, a rotary bolt having the lower face of its forward end cut away, a bolt-handle and locking-lug located at the rear end of the bolt and respectively co-acting with the walls of said locking-slot for locking the bolt at points on laterally opposite sides of the axis of the gun, and a rocking cartridge-loading platform located at the bottom of the forward end of the bolt-chamber and coupled with the bolt for rotation therewith, but not for linear movement therewith.

4. A bolt-action gun having the boltchamber of its receiver intersected at its rear end by a transverse locking-slot and at its forward end "by a transverse cartridgeloading and cartridge-ejecting opening, a rotary bolt, a handle located at the rear end of the bolt, and a rocking cartridge-loading platform located in the bottom of the forward end of the bolt-chamber, coupled with the bolt for rotation therewith, and formed in its upper face with a trough.

5. A bolt-action gun having a rotary bolt, a handle located at the rear end of the bolt for the operation thereof, an extractor mounted upon the forward end of the bolt with which it has linear but not rotary movement, cuts in the receiver which hold the said extractor against rotary movement, and a cam and cam notches interposed between the said extractor and bolt for yieldingly holding the bolt-handle in its closed position.

6. A bolt-action gun havingra receiver, a rotary bolt, a bolt-handle at the rear end of the bolt, a cartridge-loading platform coupled with the bolt for rotation therewith, and formed with a cartridge-ejecting shoulder, and an extractor mounted upon the bolt for drawing the spent cartridge rearwardly over the said platform until ejected by the said shoulder thereof.

7. A bolt-action gun having a rockingcartridge-loading platform located in the forward end of its bolt-chamber, coupled with its bolt for rotation therewith, and formed with a transverse peripheral slot whereby it is held against longitudinal displacement in the bolt-chamber.

S. A bolt-action gun having a receiver, a rotary bolt, a tiring-pin installed therein, a combined sear and bolt-stop coacting with the firing-pin for releasing the same and coacting with the bolt for preventing the same from being withdrawn from the receiver, and a trigger pivotally suspended from the sear and formed with a rearwardly and upwardly projecting portion engaging with a fixed portion of the arm upon an excess rearward pull of the trigger for clearing the sear from the path of the bolt to permit the same to be withdrawn from the receiver.

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

FRANK F. BURTON.

Witnesses:

THOMAS C. JOHNSON, FREDERIC C. EARLE.

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