US2259989A - Firearm - Google Patents

Description

oct: 21, 1941. c. H1 'BARNES FIREARM 4 Sheets-Sheet l Filed July l, 1939 /NvI/ENTQR CHARLAS h- BAR/vas A ToNEY L oct; 21., 1941. c. H. ARNES 2,259,989y

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Patented Oct. 21, 1941 FIREARM Charles H. Barnes, Nichols, Conn., assignor to Remington Arms Company, Inc., a corporation of Delaware Application July 1, 1939, -Serial No. 282,368

(Cl. l2-22) 4 Claims.

This invention relates to rearms and particularly those of the pump action type but is not limited thereto.

Pump action firearms may be described generally as being those in which a reciprocating operating handle for giving the motion necessary to unlock the breech mechanism, retract the breech bolt, eject the fired shell, cock the hammer, deliver a fresh shell from a magazine to the chamber and lock the parts again in closed position, is guided on suitablev means held substantially parallel to the barrel.

One of the objects of the invention is the provision of means to facilitate removal of the red cartridge case from the chamber, especially to assistin the initial movement thereof and also to assist in the closing action. The pressure developed in the case upon ring often expands the-same, causing the case to stick in the chamber. Another of the objects is the provision of a box=magazine that may be easily inserted' and held in position and a simplied construction of the holding means.

The means to facilitate removal of the lred cartridge case and to assist closing action may be used however with any type of cartridge feeding mechanism and the magazine and holding means maybe used with any type of firearm.

Other of the objects of the invention will appear from the following description and disclosure.

In the drawings:

Fig. 1 is a fragmentary side elevation with portions thereof in section.

Fig. 2 is a fragmentary view of the breech bolt and slide. in locked position, with portions thereof in section.

vFig. 3 is similar to Fig. 2 with the exception that the slide has been moved'rearwardly and the breech bolt unlocked.

Fig. 4 is similar to Figs. 2 and 3 with the exception that the slide has been moved further tothe rear and the bolt has been moved to the rear.

' Fig. 5 is similar to Fig. 3 and shows a modification-of the slide and the cam for the initialextraction lever.

Fig. 6 is a sectional viewtaken on line VI-VI o'f Fig. 1.

Fig. 7 is a view ofthe magazine looking towards its forward face with the latch shown in dotted lines.

Fig. 8 shows a magazine latch per se.

Fig. 9 is a fragmentary sectional view of the'55 bolt and slide showing a lug on the firing pin for positive retraction of the firing pin.

Fig. 10 is a fragmentary enlarged'section showing the magazine latch holding means and the front face of the magazine.

Fig. 11 is a fragmentary side elevation, to a larger scale, of the ring mechanism and magazine attachment shown in Fig. 1.

Referring to Figs. 1 and 11, the breech bolt 20 lis carried by the action slide 2|, a firing pin 22 having firing pin spring 2-3 (Fig. 4) being mounted in said breech bolt 20. Hammer 24 is pivoted at 25 and is adapted to strike the end of the ring pin 22 under the influence of main spring 2B acting through the hammer link 21. A trigger 28 pivoted at 29 has a sear 30 adapted to engage sear notch 3| of hammer 24 ,so that when trigger 28 is depressed the hammer will be propelled forward by the main spring 26. The action slide lock 32 is pivoted at 33 and is rotated' about this pivot by a spring or wire 34 which slides in the slot 35 of the action slide lock 32, the other end of the spring 34. .being fastened to the hammer link 21 and reciprocating therewith. When the hammer link is forward as shown in the full lines (Figs. 1 and 11), the end of spring 34, engagingslot 35, is forward of the pivot 33 and serves to rotate the action slide lock in a clockwise direction, removing the forward edge 32 of said lock from its blocking position back of the extension 36 of the slide 2|. At a rearward portion 3l of the action slide lock`there is a plunger 38 forced outwardly by a spring 39 which engages trigger lock 40, said trigger lock being pivoted at 4|, and its lower end 42 being adapted to enter the notch 43 of trigger 28. When the trigger lock enters this notch, the trigger is held downward and cannot be actuated. The location of plunger 38 is such that when the forward end of the action slide lock 32 is in the unlocked or downward position, the plunger 38 will be in its up- Ward position and above the center 4| of the trigger lock, and serve to rotate the trigger lock 4|) in a counter-clockwise direction, tending to move the tip 42 in engagement with the trigger notch 43. As soon as the trigger is released or the portion 44 of the hammer 24 in its'cocklng movement contacts the extension 45 of the trigger and forces the trigger downwardly, tip 42 will Senter notch 43. A suitable trigger spring 46 serves to rotate the trigger about its pivot 29 and a conventional cross lock 41 may be provided for locking the trigger. A fore-end or operating handle 48 is provided for the operating of the gun, said fore-end sliding on the guide tube 49 and having attached thereto the action slide operating bar 50. When it is desired to open the bolt, the fore-end is moved rearwardly on the guide tube 49, motion thereof being transmitted through bar 50 to the action slide 2|. The slide may be moved rearwardly if the hammer is in the red position because the action slide lock 32 has been moved to unlocked position, the spring 34 having been carried ahead of pivot 33 by the hammer link 21, thereby rotating the lock in a clockwise direction. In the event that it is desired to open the action while the hammerxis cocked, a nger piece is provided which is integral with the action slide lock 32 and which when depressed moves the lock 32 to the unlocked position. Further movement of the slide rearwardly, resulting from movement of the operating handle, occurs until the slide passes over the pad or extension 52 of the trigger lock 4I) which serves to positively move the triggerlock into locking position because of engagement-.of

portion 44 which extension 45, thereby causing tip 42 to enter notch 43.l As the action slide is moved forward, it can be seen that the action lock 32 is held downwardly by the slide 2 l, which in turn prevents the trigger lockfrom being moved into unlocked position until the a-ction slide is all the way forward and the action lock 32 moves upwardly, thereby moving plunger 33 to a point below the trigger lock pivot 4|. It is still necessary, however, to release trigger 23 and apply pressure thereto again before the gun may be fired, because as long as pressure is maintained on trigger 28, even though the action lock 32 is in locked position, the pressure exerted on tip 42 is suiiicient to prevent the spring 38, which at this time may be below the pivot 4|, from rotating the trigger lock 4| into unlocked position. The trigger lock 4|, even though it is free to move upwardly by the reason of tip 36 clearing action slide lock 32, however, will not move upwardly into locking position until the trigger lock is released because the relation of parts is such that the spring 34 acting to the rear of pivot 3-3 will not rotate the slide lock until trigger lock iii has been rotated to its released position. The pressure of spring 34, acting to the rearward of pivot 33, therefore, will be insufficient to rotate trigger lock 43 until pressure is released from the trigger The receiver 53 is provided with a locking notch '54 which receives the locking surface 55 of bolt 2B. The bolt 23 is movably carried in the action slide 2|, action slide 2| sliding in suitable grooves 5% (Fig. 6) in the receiver 53.

Referring now to Fig. 2 the bolt is shown in its locked position wherein the locking surface 55 is engaged with the locking notch 54 of the receiver. The bolt is held in this locking position by the cam 57, which is part of the slide 2 there being, if desired, one on each side of the slide. The cam 5l engages the lug 58 located on the bolt, which holds the bolt in the upper position, there being a lug 58 on each side of the bolt. When the slide 2| is moved rearwardly as the fore-end is operated, a lcam 59, one of which may be located on each side of the slide, engages the lower rearward tip of lug 53 of the bolt and causes the bolt to be withdrawn out of the locking notch 54 '(Fig. 3). The clearance below cam 59 is such as to allow passage of lug 58 as movement of the slide 'is continued, as in Fig. 4, the lugs and cams not being shown therein. Due to the expansion of the cartridge case or shell upon ring, it is often difficult to start or disengage the same in the initial extraction movement. An extractor 60 engages the rim of the shell and serves to move the shell rearwardly with the bolt. In order to aid the initial movement of the shell and bolt to the rear, a member 6| is pivoted at 62 in the bolt 20 (Figs. 3 to 6). The lower end of this member may be bifurcated to straddlle lug 63. The upper end of member 6| engages a recess 64 in the inside of the top surface of receiver 53. The lower end of member 6| is engaged by the cam slots 65 located on the top surface' of slide 2|. 'I'he lug 63 at the end of the relative movement of the slide 2| to the bolt 20 is adapted to engage or abut against the shoulder 66 so that the slide and bolt will move rearwardly together under the motion imparted thereto by the fore-end48.

Referring now to Fig. 2, the bolt and slide are in their locked `and forward position in which the gun is ready to be red or has been red, the forward tip 61 of slide 2| engaging the lower portionl GSi-of bolt 2D holding the bolt in locked position. As the foreeend 48 is moved rearwardly, motion thereof is transmitted through bar 50" to action slide 2|, the slide 2| then moving relative to bolt 20, drawing lug 58 downwardly by cam 59 as the lug 58 is disengaged'from cam 57. At this time, the cam surface B5 has changed its relation to member 6| such that a force is applied to mem- Iber @i in a clockwise direction and, as the bclt is unlocked, further movement ,of the slide relative to the bolt will put additional force on the tip 6|, acting against the recess 54 serving to perform an initial slow and powerful extraction operation, tending to loosen the cartridge case so that it may be moved rearwardly. This action continues until, as in Fig. 4, the lug 63 has engaged surface 66, whereupon the movement of the fore-end will be directly applied to the bolt and the slide together, and the bolt will move at the same rate as the operating handle and slide and without multiplication of the force applied, whereas previous to this the rate was slow and depended upon the relative movement of the bolt and slide acting on member 6|.

The action of the cam in the slide on member 5| may also be employed to force the bolt home in the-closing operation. The cam 69 may have its rearward surface 'l0 (Fig. 5) so designedand the recess ll so arranged that forward movement of the slide relative to the bolt after the bolt has reached its forward position will result in a rotation of 6| counter-clockwise, the upper tip en.. gaeing the rear surface of recess 1| and forcing the bolt forward with a slow and powerful movement. The firing pin spring normally is depended upon to retract the firing pin after the hammer is in cocked position or free from the rear end of the bolt. A lug 'l2 (Fig. 9) may be provided on the firing pin 22 such that it will be engaged by projection 63 as the slide moves rearwardly relative to the bolt, thereby pulling the firing pin to the rear and positively retracting the ring pin.

The cartridges are placed in a magazine 'I3 which may be inserted in the opening therefor'in the lower part of., the receiver. The magazine has a follower 9| and a suitable spring 9i] forcing the follower upward andthe cartridges into the path of the bolt for movement into the cham--` ber in the usual manner. The-magazine 13 is held in place by a retractable lug i4 at the. rear end of the receiver opening, said lug being forced forward by a suitable spring and limited in` its movement by screw 75. At the forward end of the receiver there is located a spring pressed latch 'i6 contained ina transverse opening in receiver. The surface 11 (Figs. 1, 10 and 1l) `;he aperture in the receiver 92 is inclined in- :dly and the contacting elements of the magae have a similar slope. A lug 18 (Figs. l, 1, and 11) is located on the forward surface of i magazine and has a notch 19 therein, the upsurface 80 of the lug 18 having a cam or inied edge for the purpose which will appear sently. The latch 16 has a projection 8l for ragement with the notch 19, surface 82 being lined to engage with cam surface 80, so that the magazine is pushed into position the latch will be moved sidewardly until the notch 19 reached, whereupon spring 83 will return the f 8l to lock the magazine in place. The latch is held in position by a projection 84 of button located in the opening 83 in the receiver, guide ce 49 being screwed or otherwise fastened into ening 86 and holding button 85 in place, which turn causes projection 8e to enter the slot 81 .d limit the movement of latch 16. When the igazine is first caused to enter the aperture the receiver the spring pressed lug 14 is deessed, 'allowing easy entrance of said magazine to the aperture until the lug 14 snaps into an lening 88 of the magazine and the lug 8| has .tered the notch 19. The embodiment of the invention illustrated the drawing and described herein is typical 1d illustrative only, and it is evident that the vention is capable of embodiments in other rms, all falling within the scope of the apanded claims, which are to be broadly construedl What is claimed is: 1. In a firearm having a receiver, a recipro- .ting slide and a breech bolt having a vertical it therein, said breech bolt being carried by the lide and movable relative thereto: a member voted on the bolt and carried in said slot; an 'cuate cam on the slide engaging one end of the ember, said member being actuated in the rearard movement of said slide by engaging and aversing said arcuate cam, the other end of le member operatively engaging the receiver; .eans on the slide adapted 'to enter the slot and mit the relative movement of the slide and bolt; firing pin carried by the bolt, said firing pin .aving a depending lug entering the slot between 1e means on the slide and the rear end of the ot; a reciprocating handle operatively conected to the slide whereby operation of the andle first causes movement of the slide relative J the bolt, said relative movement rotating the iid member, which slowly moves the bolt relalve to the receiver, the means on the slide therefter engaging the lug on the firing pin which moved rearwardly until it reaches the rear end f the slot, thus positively retracting the ring iin, further movement of the operating handle coving the bolt and slide rearwardly together. 2. In a rearm, a barrel; an operating handle; guide means for said operating handle; a re- :eiver carrying said barrel and guide means; a :artridge magazine, said receiver having an apersloping upwardly and inwardly toward the other end wall of the magazine; a receiver having an aperture therein adapted to receive and substantially conforming to the configuration of the magazine; a transversely movable spring pressed latch mounted in the receiver adjacent to and adapted to engage a lug on the inwardly sloping face of the magazine, said latch and lug having cooperating cam surfaces so that the latch will be moved transversely as the magazine is inserted in place, the opposite end wall of the magazine having an aperture; a spring pressed lug in the receiver adapted to engage the said last mentioned aperture when the magazine is in place and 'yeldable as the magazine is inserted into place.

4. In a firearm having a receiver, a reciprocating slide and a breech bolt carried on said slide and movable relative thereto; a member pivoted 0n the bolt comprising a lever sharply rounded at its extreme lower end said slide having an arcuate concave slot therein adapted to be engaged by the rounded end of the lever; said receiver hav-ing a recess on the opposite side of the breech bolt from the slot in the slide, said recess being adapted to be engaged by the other end of the lever, said slot, recess and lever lying substantially in a plane normal to the direction of reciprocation of the breech bolt and slide when the latter are in their forward position, whereby the eiective length of the lever and the resulting leverage force imposed upon the breech bolt by the initial rearward movement of the slide is maximum and substantially constant during primary extraction; a reciprocating handle operatively connected to the slide whereby initial rearward movement of the operating handle causes movement of the slide relative to the bolt and said relative movement between the slide and bolt causes rotation of the pivoted lever member and a slow retraction of the bolt, and thereafter upon the completion of said relative movement the slide carries the bolt rearwardly directly with the movement of the operating handle, and upon return movement of the operating handle the relative movement between the slide and beit after the bon has reached its forward position re-engages the two ends of the lever with the slot and recess and serves to rotate the lever in the opposite direction, thereby extertlng maximum leverage for forcing the bolt forward.

CHARLES H. BARNES.

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