US1853862A - Pump gun - Google Patents

Description

April 12, 1932. JA J, HENRY 1,853,862

PUMP GUN Filed June 5, 1931 4 Sheets-Sheet l 4April 12, 1932. 1. J. HENRY PUMP GUN Filed June 5, 1931 4 Sheets-Sheet- 3 QN um @i A\\ v .a .ma n M QM S1 w www,

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PUMP GUN Filed June 3, 1931 4 Sheets-Sheet 4 Patented Apr. 12, 1932 tsar FATF??? 'FFQE JOHN J. HENRY, OF MASON, ILLINOIS, ASSIGNOR OF ONE-HALF '.I'O HARRY H. OCONNELL, OF EFFINGHAM, ILLINOIS PUMP GUN Application filed .Tune 3,

The device forming the subject matter of this application is a pump gun, and one object of the invention is to provide novel means for eject-ing the shell downwardly.

Other objects are, to provide novel means for locking the barrel in firing position, and to improve the firing and the safety mechanisms.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the 1nvention appertains.

With the above and other objects in View, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details 0f construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

In the drawings Figure 1 shows in longitudinal section, a device constructed in accordance with the invention, the gun being opened, and ready to have a shell discharged from the magazine;

Figure 2 is a section resembling Figure 1 but in a slightly different cutting plane;

Figure 3 is a longitudinal section showing the gun closed;

Figure 4 is a longitudinal section in a plane at right angles to the cutting' plane of Figure 1;

Figures 5, 6, 7, 8, 9, 10, 11, 12 and 13 are transverse sections taken respectively, on the lines 5-5, 6-G, 7 7, 8 8, 9-9, 10-10, 11-11, 12-12 and 13-13 of Figure 1;

Figure 14 is a longitudinal section showing the parts as they will appear shortly before they have assumed the positions of Figure 3;

Figure 15 is a fragm-ental longitudinal section at right angles to the cutting plane in Figures 1, 2, 3 and 14, and showing the shellgripping levers;

Figure 16 is a side view of the slides that move with the forearm;

Figure 17 is a plan of the structure shown in Figure 16;

Figure 18 is a perspective view supplemen- 1931. Serial No. 541,922.

tal to Figure 6 and disclosing one of the 1evers of the action lock;

Figure 19 is an eleva-tion showing another lever of the action lock of Figure 6;

Figure 20 is cross section of the structure shown in Figure 19.

Figure 21 isv aside elevation showing a portion of the barrelV and the magazine;

Figure 22 is a cross section of the structure delineated in Figure 21.

The frame of the gun in marked generally by the numeral 1, and in the forward part of the frame (Figs. 9, 10, and 2) a block 2 is held by take-down screws 3 which also retain the magazine 4. A barrel 5 has sliding movement, lengthwise, in the frame 1 and on the block 2 (Fig. 10).' A longitudinal rib 6 (Figs. 11, 9 and 14) on the barrel 5 slides in a groove 7 in the forward part of frame 1 and constrains the barrel 5 to straight line movement in the frame 1. The barrel 5 (Figs. 21 and 22) has an inverted T-shaped part'103 that slides in a correspondingly shaped groove in a. rib 104 on the magazine 4, the barrel carrying a stop 105, adapted to cooperate with the rear end of the rib 104.

The forearm 8 slides on the magazine 4 and on the barrel 5 and is connected by securing elements' 92 (Figs. 12, 1, 14, 3, 2) with a ring 9 (Figs. 12, 16, and 17) slidable on the magazine 4 and carrying rearwardly extended slides 11 which reciprocate in guide grooves 111 in the frame 1.

Figure 13, in conjunction with Figures 2, 1, and 14, shows that the barrel 5 has a cross piece 12, slidable inl slots 14 in the forearm 8. Latches'l (Figs. 17, 1,14,l1,2 and 3) are pivoted to the inner sides of the slides 11, and are spring-pressech'to swing upwardly and to engage in front of a projection 16 (Figs. 11 and 1) on the lower side of the barrel 5. In Figures 14 and 3 it appears that the block 2, which may be considered as part of the frame of the gun, has a cam 17 wherewith the latches 15 engage as the slides 11 are moved backwardly, along with the forearm 8.

A locking plate for the barrel 5 (Figs. 9 and 1) slidesl crosswise of the barrel 5, in the block 2, and when the barrel 5 is shoved back to the shooting position of Figure 3, the up- :saY

per edge of the locking plate is' engaged in a seat 19 in the barrel 5, to be seen plainly in Figures 2 and 3. Figures 9, 2 and 3 show that the locking plate 18 has lugs 20 on its outer edges, which, when the slides 11 are moved rearwardly to the positions of Figures 14 and 3, are adapted to cooperate with rearwardly and downwardly inclined cam notches 21 (Figure 16) formed in the slides 11, near to the forward ends thereof.

A breech block 22 (Figures 14, 1, 6, 5, 2, 3, and 4) is secured in the frame 1. In the breech block 22 and in the block 2, below the slides 11 (Figures 8 and 3), longitudinal shafts 23 are journaled, these shafts carrying radial shell-supporting wings 24 (Figures 7 4 and 2). Below the wings 24, the frame of the gun is open, as denoted by the numeral 25 in Figures 7, 2, 3 and 1. Short spiral ribs 26 (Figures 14,3 and 2) are secured to the shafts 3 near to the forward ends thereof. Sometimes these ribs 26 lie between the slides 11 of Figure 17 behind cam blocks 29 on the arms, and sometimes they are outside of the arms 11, and then they slide in longitudinal grooves 27 (Figures 1'6, 14, 10 and 2) fash ioned in the outer surfaces of the slides 11 at the lower edge thereof. In the lower edge of the slides 11, at the back end of the groove 27, there are inclined cam notches 28 (Figures 17, 16, 14 and 2), the cam notches being located a little behind the cam blocks 29, and cooperating with the spiral ribs 26 of Jthe shafts 23 to raise andV lower the wings 24 (Figures 7 shafts 23. The forward end of a spring tongue 30 (Figures 13 and 8) is secured in a groove 100 that isformed in the top of the frame 1, and when the barrel 5 is pushed back into the position of Figures 3 and 14, the spring 30 retires into the groove 100. The spring 30 is a shell-ejecting spring.

Shell-gripping levers 31 (Figures 15 and 4) are fulcrumed intermediate their ends on the frame 1 at the rear of the magazine 4, and the forward ends of the levers are pressed inwardly by springs 32. It is shown in Figure 1, that the rear ends of the levers 31 extend upwardly, and Figure 8 shows that the ends of the levers extend outwardly, so as to cooperate with the inter-surfaces of the slides 11. The rear, upper end of one lever is adapted to be received in a depression 34 in one of the arms 11, and the rear end of the other lever is adapted to cooperate with an inclined projection 33 on the other slide 11, the parts 33 and 34 being shown in Figure 17. On the breech block 22 there is a small, forwardly projecting tit 35. A shouldered, spring-pressed latch 36 (Figures 14, 1 and 2) operates vertically in the top of the breech block 22.

Referring to (Figures 3, 14, 1 and 5) the drawings show that a tubular guide 37 is carried by the frame 1, back toward the stock and 4) that are carried by the of the gun, and in the guide, a slide 38 is mounted for reciprocation, but against rotation. The slide 38 is advanced by a spring 41 in the guide 37, and the slide carries a hammer 39 provided with a firing pin 40 (Figure 3), adapted to move through the breech block 22. Therslide 38 has a depending fork 42, (Figures 5 and 1), provided with rearwardly and upwardly inclined wings 43, having their inner edges spaced apart. The trigger 44 is fulcrumed on the frame 1 and is under the control of a safety catch 102 of any desired construction. rlfhe trigger spring is shown at 45. rThe trigger 44 has an arm 46 at its upper end, and at the rear end of the arm there is a transverse,`inclined head 47. Comparing Figures 1 and 3, it can be seen that the head 43 will slide backwardly over the arm 46, tilting the trigger 44, during the coching of the gun, the head 47 acting as a stop when the gun is cocked, as in Figure 3; but when the trigger 44 is pulled, the fork 42 moves forwardly, and the head 47 of the trigger passes through it.

Lateral guides 48 (Figures 5 and 1) are mounted on the hammer 39, and in the guides, spring-advanced latches 49 (Figures 5 and 4) are mounted to slide, transversely of the gun, the outer ends of the latches sliding in the grooves 111. The frame of the gun has inwardly converging surfaces 50, located at the rear ends of the grooves 111, as can be seen in Figure 4.

Regarding closes the fact that a lever 51, of angular form, swings in a recess 52 formed in the rear surface of the breech block 22, the ful crum of the lever 51 being marked by the numeral 53. A spring 54 in the breech block 22 tends to Swing the lever 51 crosswise of the gun, so as to dispose the upper end of the lever in the path of the hammer 40, that is, between the hammer and the breech block 22.

The lever 51 may be given an inclined or' wedge-like surface 55 on its inner edge at its upper end, to aid in guiding the lever between the breech block 22 and the forward end of the hammer 39. The short arm 56 of the lever 51 has an inclined end 57 (Figures 19 and 20) resting on one of the slides 11, as shown in Figure 6. In the upper edge of this slide 11 there is forwardly inclined notch 58 (Figures 19, 2 and 16) which receives the inclined end 57 of the safety lever 51, at times. An inclined rib 59 (Figures 19, 2O and 17) is secured to the inner surface of the said slide 11, in alignment with the forward edge of the notch 58.

The action lock includes an angular lever 60, to be seen in Figures 18 and 6, and this lever is fulcrumed at 61 on the breech block 22, to swing in a plane at right angles 'to the plane in which the lever 51 swings. One arm of the lever 60 extends out through the side 'of the frame 1, and terminates in a button the action lock, Figure 6 dis# pression spring 64 levers 31 act 101. The lever 60 has a lower projection 62 and an upper projection 63. The lower projection 62 is in the path of the slide 38, as F igures 1, 2, 3 and 14 will show. A com- (Figure 2) is interposed between the breech block 22 and the lower part of the lever 60, and tends to swing the lever 60 in Figure 6 so that the upper projection 63 rests against the rear side of the lever 51; although, in certain steps of the operation, the spring 64 swings the lever 60 until the projection 63 is in engagement with the inner edge of the lever 51, the lever 51 then being swung to the right from the position of Figure 6, and out of the path of the upper end of the hammer 39.

Referring to Figure 1, the forearm 8 and the barrel 5 are in the forward position, the latches on the slides 11 being' engaged in front of the projection 16 on the barrel. Therefore, as the forearm 8 is slid back, the barrel 5 will be slid back also. As the slides 11 of Figure 17 move back, the rear end of the shell-gripping lever 31 that is shown lowermost in Figure 15, moves into the depression -34 of the slide 11 that is shown lowermost in Figure 17, under the action of the corresponding' spring 32, and at the same time, the inclined projection 33 on the slide 11 that is shown uppermost in Figure 17 moves back away from the rear end of the shell-gripping lever 31 that is shown uppermost in Figure 15. As soon as the lowermost lever 31 of Figure 15 is retracted from the shell in the maga` zine 4, that shell moves back under the action of the spring (not shown) in the magazine, and the forward end of the uppermost lever 31 of Figure 15 rides on the side of the shell that is being moved back, but when that shell is clear of the uppermost lever 31 of Figure 15, then the forward end of the said lever engages behind the shell next ahead, and holds it in position to be released from the rear end of the magazine 4. Stated in few words, the alternately, to hold succeeding shells in the rear end of the magazine 4. rThe shell that has been carried back, as aforesaid, is supported on the wings 24, which, at this time, are in the depending position of Figures 7 and 1.

The short spiral ribs 26 on the shafts 23 are just inside the slides 11 of Figure 17, and as the slides 11 move back, with the forearm 8 and the barrel 5, the cam blocks 29 on the slides act on the spiral ribs 26 and direct them into the cam notches 28 (Figures 17 and 2) of the slides 11, and as the slides move back, rotation is imparted to the shafts 23, through the instrumentalitv of the spiral ribs 26 and the cam notches 28, and the wings are swung upwardly, the shell that is on the wings being carried upwardly. As the shell is carried upwardly, it is engaged at its rear end by the latch 36 and the tit 35 of Figure 2,

and as the barrel 5 moves back to the position of Figure 3, the shell is received in the breech of the barrel, the ejecting spring of Figure 2 being compressed, and the shell being in abutment with the breech block 22.

As the slides 11 are carried back along with the forearm 8, a time arrives when, as shown in Figure 14, the latches 15 on the slides 11 come into engagement with the cam 17 on the fra-me, the latches 15 being swung downwardly, clear of the projection 16 on the barrel 5, as shown in Figure 3. This lets the forearm have a small amount of backward movement, independently of the barrel 5, the said independent movement being possible because the slots 14 of the forearm which receive the crosspiece 12 (Figure 13), let the forearm move back from the position of Figure 14 to the position of Figure 3. At the beginning of the independent backward movement of the forearm 8, the lugs 18 (Figures 14 and 19) on the locking plate 18 that slides crosswise of the barrel 5, in the frame-carried block 2, are just entering the inclined notches 21 of the arms 11, as in Figure 14. The aforesaid independent backward movement of the forearm 8 causes the lugs 20 to rise in the notches 21 of the slides 11, to the position of Figure 3, the locking plate 18 being raised and being engaged in the seat 19 of the barrel 5, to hold the barrel in retracted or firing position.

As the slides 11 igure 4) move back, they engage the latches 49 in the guides 48 on the hammer 39, the hammer and the slide 38 being carried back to the position of Figure 3, and the spring 41 being compressed. As the slide 38 moves back, the back 42 (Figure 5) that is carried by the slide move back on opposite sides of the arm 46 on the trigger' 44, and finally the wings 43 catch behind the head 47 on the arm 46 of the trigger, and the piece is cocked, as in Figure 3.

Referring to Figure 4, it will be seen that as the hammer 39 is carried back by the engagement between the slides 11 and the latches 49, a time comes when the latches 49 are shoved inwardly by engagement with the cams 50 on the frame, at the rear ends of the grooves 111. The rear ends of the slides 11 then can move back beyond the latches 49, and when the hammer 39 moves forward, as the gun is fired, the outer ends of the latches 49 slide on the inner surfaces of the arms 11.

Noting Figures 6 and 20, it will be seen that the inclined end 57 of the short arm 56 of the angular lever 51 rests on the upper edge of one of the slides 11. The short arm 56 of the lever 51 is tilted up somewhat, and this disposes the inner part of the end 57 in the path of the inclined rib 59 (Figures 17, 2O and 19) on the said slide. When the said slide moves backward, that is in the direction of the arrow A in Figure 19, the rib 59 will coact with the end 57 of the short arm 56 of the lever 51, to tilt the lever in the direction of the arrow B in Figure 6, and cause blocks 29, whereupon the end 57 to enter the notch 58 in the said arm 1l. l/Vhen the lever 5l is tilted in the direction of the arrow B in Figure 6, the long arm of the lever is moved out of the path of 51 the hammer 39, that is, from betw-een the hammer and the breechblock 22, and the gun can be discharged. When the lever 5l is swung in the direction of the arrow B in Figure 6, the lever 60 swings on its fulcrum 61, under the action of the spring 64, in a direction at right angles to the plane in which the lever 5l swings, and the upper projection 63 of the lever 60 (Figures 18 and 6) engages the left hand edge of the long arm of the lever 5l in Figure 6, and the said long arm thus is held out of the path of the hammer 39, to permit the gun to be red. rFhe parts under discussion function as an action lock, which prevents the gun from being opened until the hammer 39 is snapped down, or until the lever lOl is pressed forward, permitting the operator to open the gun by forward pressure of the forearm 8. When the gun is fired, the slid-e 38 strikes the lower projection 62 of the lever 60, and tilts the lever on its fulcrum Gl, thereby withdrawing the upper projection 63 from engagement with the lever 5l, and permitting the lever 5l to move in front ofthe hammer 39, as sho-wn in Figure 6.

As the barrel 5 and the forearm 8 are slid forward to open the gun after shooting, the ends of the short spiral ribs 26 on the shafts 23 ride in the grooves 27 (Figure 16) on the outer sides of the slides 1l, and the wings 24 are held upturned, as in Figure 7. During this time, th-e shell is held back by the latch 36 of Figure l, and the barrel 5 is pulled clear of the shell. The shell then drops clear o-f the gun, through the bottom opening shown at 25. Toward the end of the foreward movement of the forearm y,8 and the slides 11, the spiral ribs 26 encounter the rear walls of the notches 28 in the slides 2S, the shafts 23 are rotated to dispose the wings 24 in the solid line position of Figures 7 and 2, to receive a fresh shell from the magazine e, the ribs 26 then being on the inner sides of the arms l1 and in the path of the cam the cycle of operations hereinbefore described may be repeated.

`/Vhat is claimed is l. A pump gun comprising a frame, a barrel slidable in the frame, a locking member sli dable in the frame and engageable with the barrel to hold the barrel in firing position when the barrel is slid rearwardly, a forearm slidable on the gun, a slide carried by the forearm, interengaging elements on the slide and on the locking member, said interengaging elements coming into engagement the forearm and the slide move rearwardly, thereby to move the locking member into engagement with the barrel, and mechanism for connecting the forearm to the barrel to carry the barrel rearwardly, said mechanism embodying a latch engageable with the barrel and movable with the slide, and a member on the frame wherewith the latch engages, to disengage the latch from the barrel, after the forearm has moved rearwardly a predetermined amount, thereby giving the forearm a rearward movement independently of the barrel, said cooperating elements acting to engage the locking member with the barrel during the aforesaid independent movement.

2. A pump gun comprising a frame, a magazine carried by the frame, shell-holding levers fulcrumed on the frame at the rear of the magazine, spring means for actuating the levers to cause them to engage a shell and hold it in the rear end of the maga-Zine, a forearm mounted to reciprocate on the gun,

slides carried by the forearm, and means carried by the slides for actuating the levers alternately to withdraw them, one at a time, from shell-holding position, the last speciied means embodying a depression on one slide, into which a portion of one lever moves,

as the forearm moves forwardly, to permit another portion of that lever-to be disengaged from the shell by the corresponding spring means, and an incline on the other slide, wherewith a portion of the other lever engages, as the forearm moves forwardly, to tilt said other lever and disengage it from the shell, the incline moving clear of said other lever, as the forearm moves backwardly, thereby permitting another portion of said other lever to ride on the side of the shell, under the action of the corresponding spring means, and then engage a shell ahead in the magazine, as the forearm is moved rearwardly.

3. A pump gun comprising a frame having a cam, a hammer movable on the frame, means for advancing the hammer, a springactuated latch carried by the hammer, a forearm slidable on the gun, a slide carried by the forearm, .the slide engaging vthe latch, to carry the hammer backwardly and cock the gun, the latch engaging the cam, to disengage the latch from the slide and permit the hammer to move forwardly with respect to the slide, and trigger means coacting with the hammer to hold the hammer releasably in cocked position.

4. A pump gun comprising a ing a breech block, a hammer operating through the breech block, a safety lever fulcrumed on the frame, spring means for moving the safety lever to interpose it in the path of the hammer, a forearm mounted to reciprocate on the gun, a slide carried by the forearm, and interengaging elements on the forearm and on the lever, coacting to swing the lever out of the path of the hammer, when the forearm is moved rearwardly.

5. A pump gun comprising a frame includframe including ing a breech block, a hammer operating through the breech block, a safety lever fulcrumed on the frame, spring means for moving the safety lever to interpose it in the path of the hammer, a forearm mounted to reciprocate on the gun, a slide carried by the forearm, and interengaging elements on the forearm and on the lever, coacting to swing the lever out of the path of the hammer, when the forearm is moved rearwardly, said interengaging elements comprising relatively inclined parts on the lever and on the slide, the slide being provided with a notch into which the relatively inclined part of t-he lever moves, as the lever is tilted out of the path of the hammer.

6. A pump gun comprising a frame including a breech block, a hammer operating through the breech block, a safety lever fulcrulned on the frame, spring means for moving the safety lever to interpose it in the path of the hammer, a forearm mounted to reciprocate on the gun, a slide carried by the forearm, interengaging elements on the forearm and on the lever, coacting to swing the lever out of the path of the hammer, when the forearm is moved rearwardly, a second lever fulcrumed on the frame and movable in a direction substantially at right angles to the plane in which the safety lever swings, the second lever being provided with a projection which may be interposed in the path of the safety levers, to hold the safety lever out of the path of the hammer, spring means for moving the second lever to dispose the projection in the path of the safety lever, and means for operating the second lever to disengage projection from the safety lever.

7. A pump gun comprising al frame includa breech block, a hammer operating through the breech block, a safety lever fulcrumed on the frame, spring means for moving the safety lever to interpose it in the path of the hammer, a forearm mounted to reciprocate on the gun, a slide carried by the forearm, interengaging elements on the forearm and on the lever, coacting to swing the lever out of the path of the hammer, when the forearm is moved rearwardly, a second lever fulcrumed on the frame and movable with respect to the safety lever, the second lever being provided with a projection which may be interposed in the path of the safety lever, to hold the safety lever out of the path of the hammer, spring means for moving the second lever to dispose the projection in the path of the safety lever, and means under the control of an operator for actuating' the second lever to disengage the projection from the safety lever.

8. A pump gun comprising a frame including a breech block, a hammer operating through the breech block, a safety lever fulcrumed on the frame, spring means for moving the safety lever to interpose it in the path of the hammer, a forearm mounted to reciprocate on the gun, a slide carried by the forearm, interengaging elements on the forearm and on the lever, coacting to swing the lever out of the path of the hammer, when the forearm is moved rearwardly, a second lever fulcrumed on the frame and movable with respect to the safety levers, the second lever being provided with a projection which may be interposed in the path of the safety lever, to hold the safety lever out of the path of the hammer, spring means for moving the second lever to dispose the projection in the path of the safety lever, the second lever extending into the path of a part of the hammer, whereby when the hammer moves to shooting position, the projection will be moved out of the path of the safety lever.

9. A pump gun having a slidable barrel, and provided in its lower edge with an opening located below the barrel and in the lower edge of the gun, a forearm mounted to reciprocate on the gun, a slide having a. longitudinal groove in its outer surface, the slide being' carried by the forearm and being provided in its lower edge with a cam notch inclined transversely of the length of the slide and located at the rear end of the groove, the slide being provided on its inner side with an inwardly extended cam block which is located at the forward end of the cam notch, the slope of the cam block being in the same direction as the inclination of the cam notch, a shaft journaled in the gun, a radial Wing carried by the shaft and located adjacent to said opening, a spiral rib on the shaft, one end of the rib engaging the outer surface of the slide, within the groove, when the forearm and the slide are retracted, thereby to hold the wing upturned and in open position with respect to the opening, the groove directing the rib into the cam notch, as the forearm and the slide are advanced, the rib entering the cam notch when the slide is further advanced, thereby to rotate the shaft and swing the wing to closed position with respect to the opening, the cam block cooperating with the opposite end of the rib to direct the rib back into the cam notch when rearward movement of the forearm and the slide takes place, and means for placing a cartridge on the wing when the wing is in closed position with respect to the opening, the wing raising the cartridge into the path of the barrel, as the wing moves from closed to open position.

In testimony that I claim the foregoing as my own, I have hereto afIiXed my signature.

JOHN J. HENRY.

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