US1021987A - Repeating firearm. - Google Patents

Description

G. s. LEWIS.

REPBATING FIREARM.

APPLICATION FILED JUNE 9, 1911.

Patented Apr. 2-, 1912.

4 SHEETS-SHEET 1.

G. S. LEWIS.

RBPEATING FIREARM.

APPLICATION FILED JUNE 9, 1911.

Patented Arm 2, 1912.

4 SHBET8SHEBT 2.

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ttest 15W 4 SHEETS PatentedApr.2,1912.

G. S. LEWIS.

RBPEATING FIREARM.

APPLICATION FILED JUNE 9, 1911.

Patented Apr.*:2,'1912.

4 SHEETFSHEET 4.

UNITED STATES PATENT OFFICE.

GEORGE S. LEWIS, OF CI-IIGOPEE. FALLS, MASSACHUSETTS, ASSIGNOR TO J. STEVENS ARMS & TOOL COMPANY, OF CHICOPEE FALLS, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

REPEATING FIREARM.

To all whom it may concern:

Be it known that I, GEORGE S. LEWIS, a citizen of the United States, residing in Chicopee Falls, in the State of Massachusetts, have invented certain new and useful Improvements in Repeating Firearms, of which the following is a specification, reference being bad to the accompanying drawings, forming a part hereof.

This invention relates to repeating firearms of that class in which the several operations of loading, withdrawing the empty cartridge shell from the chamber of the barrel and cooking the hammer are effected by the longitudinal movement of a foreend or grip piece which is suitably mounted below the barrel-and acts upon the mechanism within the receiver or frame through a slide bar.

One object of the invention is to enable the taking down of the gun, that is, the removal of the-barrel from the frame and stock, to be more readily effected than is usual in firearms of this description.

Another object is to improve the safety devices which are intended to prevent the discharge of the firearm under improper conditions.

several features of the invention in a con venient and practical form, reference being bad to the accompanying drawings in which such firearm is illustrated and in which Figure 1 is a view in side elevation of the firearm'referred to. Fig. 2 is a similar View on a larger scale but showing only a portion of the firearm and broken out to save space. Figs. 3, 4L and 5 are detail views in transverse section on the planes indicated by the broken lines 33-, Lt and 55 respectively looking in the direction of the arrows. Fig. 6 is a detail View in longitudinal section through the receiver and the parts adjacent thereto showing the mechanism wit-h its Specification of Letters latent.

Application filed June 9, 1911.

Patented Apr. 2,1912.

Serial No. 632,262.

parts in the position which they occupy immediately before the fall of the hammer with the breech-block forward, and the trigger locked by the safety lock. Figs. 7 and 8 are views in transverse section on the planes indicated by the broken lines 7-7 and 88 of Fig. 6 looking in the direction of the arrows. Fig. 9 is a view similar to Fig. ,6 showing the slide bar and breechbiock in their rearmost position, the hammer cooked, the cartridge lifter down and the inertia block in its rear or cooked position. Fig. 10 is also a view similar to Fig. 6 but showing the breech-block in its forward po sition, the cartridge lifter raised, the hammer cooked and the inertia block in its rearmost position. Fig. 11 is a detail view showing a portion of the slide bar, the slide lock lever, a portion of the cartridge lifter and the inertia block. Fig. 12 is a detail View in section on the planes indicated by the broken line 1212 of Fig. 11. Fig. 13 is a detail view in perspective of the breechblock. Fig. 14: is a detail view of the dog pivoted on the breech-block and adapted to be engaged by the slide bar. Fig. 15 is a detail View of the trigger safety lock. Fig. 16 is a detail view of the finger through which the trigger lock is operated by the movement of the cartridge lifter. Fig. 17 is a detail view of the inertia block. Fig. 18 is a detail view of the cartridge stop.

The invention is shown in the drawings as embodied in a repeating shotgun which is' of usual construction except as pointed out hereinafter, comprising the stock a, the barrel 6, the-receiver (l, the magazine tube 6 and the grip piece or fore end f, all constructed and arranged substantially as usual. The fore end or grip piece f has secured thereto a slide bar f through which the rearward movement of the grip piece f actuates the mechanism within the frame or receiver cl. The barrel 6 has a screw thread engagement wit-h the frame or receiver (Z, as at Z), and in order to permit the necessary rotation of the barrel with the magazine tube 6, with respect to the receiver d, provision is made, in the present instance, whereby the slide bar 7 can be drawn forward until its rear end is withdrawn entirely from the receiver (Z. magazine tube 6, or itmight' be any other For this purpose the guide upon which the grip-piece is moved longitudinally, is extended somewhat farther forward than usual and is secured at its forward end to the barrel 5 by means of the usual lug b. As it is necessary to provide a stop to limit the forward movement of the grip piece and slide bar during the ordinary operation of the gun and at the same time to permit the further forward movement of the grip piece and slide bar preparatory to taking down the gun, there is provided a movable stop which is shown as a slotted sleeve 6, which is mounted on the magazine tube or guide 6 forward of the grip piece f. I/Vhen this slotted sleeve is in the position shown in Fig. 3 its forward end abuts against the lug Z) while its rear end formsa stop for the grip piece but by giving the slotted sleeve 0 a half turn so that the slot thereof is brought into line with the lug Z) the sleeve may he slipped forward and thereby permit the grip piece f also to he slipped forward far enough to withdraw the end of the slide bar f entirely from the receiver cl so that the barrel can be rotated with respect to the receiver to disconnect it therefrom.

In order to lock the barrel to the receiver so as to prevent rotation or partial rotation of the barrel with respect to the receiver there is mounted on the block b which con nects the barrel and the magazine tube at their rear ends, in a suitable guideway formed therein, a vertically sliding bolt 6 provided with a tongue 5 which projects through a slot in the rear face of the block b and engages the receiver 12, while, if the bolt is thrown down, as indicated by dot-ted grooved longitudinally as at d and d to' guide the breech-block in its movements. The breech-block consists of a plurality of parts which are separately secured together so that the breech-block can be taken apart in the frame and removed through the lateral ejector opening (Z of the frame, it being impracticable to remove it or replace it bodily through the internally threaded ring 01* on the forward end of the frame which receives the threaded end of the barrel b. As shown in Figs. 8, 9, 10 and 13, the breech-block comprises an L-shaped main part 9 which carries the extractor, the e ecto r and the forward portion of the firmg pm, and is disposed longitudinally, and a transversely disposed L-shaped part 9 which is formed with a lug g to engage the guide groove (Z in the frame and with a lug g to engage the guide groove d in the frame, and is detachably secured to the underside of the rearwardly extending portion of the part 9 as by screws 9 The parts of the breech-block being separated and outside of the frame, when it is desired to place the breech-block in position in the frame, the part 9 is first inserted through lateral opening 0Z and part 9 is then inserted through the same opening, brought into proper position with respect to the part g and is secured thereto by the screws 9 the cart-ridge lifter being at that time removed from the receiver, so that the screws 9 can be inserted through the opening (i in the underside of the receiver. The breech-block g is moved rearwardly by the slide bar 7 and for this purpose preferably has pivoted thereon a notched dog 9 shown clearly in Figs. 6, 9 and 14, adapted to be engaged by the toe f of the slide bar.

In order to prevent rearward movement of the slide bar and breech-block. except at the proper time, the rear end of the slide bar is provided with a shoulder f adapted to be engaged by the toe h of a slide bar locking lever [L which is pivoted in the frame as at k and is acted upon by a spring as 72 to hold the toe h normally upward in the path of the shoulder f to prevent the rearward movement of the slide bar. The slide bar locking lever is provided with a button If on the left-hand side of the frame so that the looking lever can be moved by hand to permit rearward movement of the slide bar. It is also arranged to be actuated to release the slide bar when the gun is fired by the inertia block '5, shown in Figs. 6, 9, 10 and 11. In this case the inertia block is pivotally mounted on the cartridge lifter in, forward of its pivot, and'is provided with a finger 2" having a stud 2' which, when the body of the inertia block moves forward,

co-aets with a cam surface 72, on the underside of the rear end of the lever to raise the rear end against the pressure of the spring h and throw the forward end h down out of the path of the slide bar f, as clearly shown in Fig. 11. As the inertia block is pivotallv mounted on the cartridge lifter the stud 2' is thrown down away from the rear end of the lever 72 as clearly shown in Fig. 9, when the cartridge lifter k is thrown down, thereby leaving the locking lever free to engage the slide bar on its forward movement and so prevent its rearward movement.

To prevent the inertia block from rebounding when it is thrown forward at the time of the discharge of the gun there is provided a detent for the block, preferably a ball detent such as is shown in Fig. 12,

comprising a ball i mounted in a cavity 2' in one part of the cartridge lifter 7c and pressed by a spring 71 toward the inertia block 6 so that as the inertia block is thrown forward the ball 2' enters a spherical recess 2' in the side of the inertia block, as

shown in Fig. 17, and prevents the rebound-,

ing. The inertia block is restored to position or cocked by the action of the cam tongue 71, at the rear end of the locking lever h. In Fig. 11 the inertia block is shown in its forward position the lifter being then in its upper posit-ion. 'It will be seen that as the lifter swings down the stud i of the inertia block swings around the axis of the stud k on which the lifter is pivoted and bears against the cam tongue h so that in the downward movement of the lifter the inertia block is swung back to its cocked position.

The cartridge lifter 70 not only performs the function of a lifter but it carries the rear portion of the firing pin and also locks the breech-block in its forward or firing position. Through it the recoil is transmitted to the frame and it is therefore pivotally mounted at its rear end on a strong stud k which is secured in the frame. It is provided with a longitudinal cam groove Z4 which is engaged by a lateral stud f, in-

dicated by dotted lines in Figs. 6, 9, and 11,

on the rear end of the slide bar f so that in the rearward movement of the slide bar the cartridge lifter and locking lever combined is thrown down into the position shown in Fig. 9, while in the forward movement of the slide bar the combined lifter and looking lever is thrown upward into the position shown in Fig. 6 and Fig. 10.

In its elevated position, indicated in Figs. 6 and 10, a shoulder k of the combined lifter and locking lever stands directly behind the rear face "5/ of the main part of the breech-block g and thus locks the breechblock securely in the forward or firing position. The combined cartridge lifter and locking lever is slotted longitudinally and vertically at its rear end to receive the inertia block 2' and also to permit the necessary movement of the hammer Z. In the forward portion of the combined lifter and lock is mounted the rear part of the firing pin m pressed normally to the rear by a spring m. The forward portion 170 of the firing pin is mounted in the main part g of the breechblock with its rear end projecting through the rear face 9 above mentioned and its forward end projecting through the forward end of the breech-block and also through a portion of the ejector mechanism which overlies the forward end. In order that the firing pin m shall be drawn back whenever the gun is opened so that it shall not be permitted to stick from rust or from any other cause in itsforward position, it is slotted, as at m to receive the lower end of a lever m underside a recess 70.

which is pivoted in a chamber formed therefor in the main portion 9 of the breechblock. The upper end of the lever m enters a slot n in the upper horizontal member of an ejector n, which is arranged to slide in a groove g formed therefor in the top of the part g of the breech-block. The rear end a of the ejector 12 projects rearwardly beyond the breech-block so that when the breech-block is moved to the rear as shown in Fig. 9 the projecting end a of the ejector a strikes the rear wall 6Z6 of the chamber of the receiver and is "pushed forward relative to the breech-block, so that the vertical forward portion a of the ejector, which previously stood in a vertical recess in the forward face of the breech-block, is pushed forward against the head of the empty cartridge shell and ejects the same through the lateral opening (Z3 of the wall of the receiver.

The extractor hooks, one of which is shown at n in Figs. 6 and 13 while the other is at n in Fig. 10, are suitably shaped so that when the empty shell is thrown forward by the ejector the left-hand extractor n lets go first, and the shell is therefore ejected through the opening (Z A hole a is formed through the vertical .member n of the ejector to permit the passage of the firing pin m The hammer Z, pivoted in the frame at Z, is actuated in the usual manner by a hammer spring Z The trigger 0, pivoted at 0 and projecting downwardly through a slot in the hammer spring Z has a shoulder 0 to engage a corresponding shoulder Z of the hammer Z to hold it in cocked position, to which position it is forced by therearward movement of the breech-block. Movement of the trigger to "release the hammer may be prevented either by handoperated devices or by devices actuated by the movement of the mechanism. As shown in the drawings, particularly in Figs. 6, 7, 9, 10, 15 and 16 the trigger is provided with a rearward projection or heel 0 for cooperation with a sliding safety trigger lock 79 arranged to slide horizontally in suitable ways formed therefor in the rear part of the receiver and having in its When the recess stands over the heel 0 of the trigger, as shown in Figs. 9 and 10, the trigger can be moved to release the hammer but when the recess is not directly above" the heel 0 as shown in Fig. 6, then the trigger can not be moved to release the hammer. For operation by hand the trigger lock 29 is connected at its rear end with a bell crank g which is pivoted in the frame and is engaged at its upper end by a slide button r mounted in the frame and engaged by a spring detent r. When the button 9 is drawn to the rear, as shown in Fig. 6, the

trigger lock 19 is pushed forward so that the recess 79 is moved out of alinement with the heel 0 and the trigger therefore can not be moved to release the hammer. If the button r be pushed forward the trigger lock will be drawn back into the position shown in Figs. 9 and 10 so that the recess 7) shall stand in line with the heel 0 of the trigger and therefore permit the trigger to be moved to release the hammer. The trigger lock is also arranged to be moved through the movement of the cartridge lifter or breech-block lock 70. For this purpose a finger 70 is arranged to move with the lifter 70 being conveniently formed, as shown in Fig. 16, on a ring k which is mounted on the pivot pin 70 and has a key 71;? to engage the adjacent portion. of the lifter 7c. The lower end of the finger k cooperates with the trigger lock 7), entering a recess 79 between two shoulders 79 and 79. When the lifter swings downward the lower end of the finger 70 acts upon the shoulder 9* of the trigger lock 7) to push the look back into the position shown in Fig. 9, in which the portion of the look forward of the recess 7) stands over the heel 0 of the trigger, thus locking the trigger against movement when the gun is opened. When the gun is closed and the lifter is raised the finger 7c acts upon the shoulder 79 to draw the look forward so that the recess p stands above the heel 0 thereby leaving the trigger free to be pulled. By operation of the safety button 0' the lock 79 can then be pushed farther forward to lock the trigger.

Pivoted in the underside of the forward end of the cart-ridge lifter 7a is a springpressed cart-ridge stop 8 of usual construction, as shown in Fig. 10. This engages the upper rim of the rearmost cartridge in the magazine tube to prevent movement thereof rearwardly under the cartridge lifter when the latter is in its elevated position. Pivoted on the right-hand wall of the chamber of the receiver is another cartridge stop lever which has at its forward end a toe t adapted, when in its highest position, to stand in the path of the rim of the cartridge at the right-hand end of its horizontal diameter and when in its lowest position to stand clear of the path of the rim of the cartridge. At its rear end the lever t is slotted as at 25 as shown in full lines in Fig. 18 and in dotted lines in Fi 10, to receive a pin 70 shown in dotted lines in Fig. 10, projecting from the right-- hand side of the cartridge lifter. Therefore, when the cartridge lifter is thrown down in the position shown in Fig. 9 the toe t of the lever t is raised into the position shown in Fig. 9 to prevent the rearward movement of the last cartridge in the magazine. The movement of the lever 23 into this position takes place just as the cartridge lifter completes its downward movement so that one cartridge is permitted to escape from the magazine above the lifter to be elevated thereby into line with the barrel but the next cart-ridge is stopped. Vhen the lifter is raised to its highest position the toe t of the lever t is moved down out of the way so that the then rea-rmost cartridge in the magazine may pass over the toe 16 until it is stopped by the stop 8. As the lifter moves downward its forward end passes downward across the rear end of the cartridge and just before the lifter reaches its lowest position such rearmost cartridge slips back over the lifter and the stop t moves upward so as to prevent the rearward movement of the next cartridge.

In describing the operation of the gun, it will be assumed, first, that all of the parts are in position for firing as represented in Fig. 10, the breech-block being in its forward position, the carrier and breechblock lock in elevated position, the inertia block in its rearward or elevated osition, the hammer held in its cocked position by the trigger and the safety lock in position for firing. WVhen the trigger is pulled the hammer falls, driving the part m of the fir.- ing pin against part m thereof and the latter against the primer of the cartridge, and the gun is discharged. At the time of the discharge the slide bar is held in its forward position by the slide lock lever h and the breech-block is held in its forward position by the cartridge lifter 7c. The recoil causes the body of the inertia block 2' to move forward relatively, and the pin 2' at the lower end thereof raises the rear end of the lever h and thereby moves the toe h at the forward end out of the path of the shoulder f of the slide bar. The grip piece is now free to be moved rearwardly and in such movement the slide bar 7 by its lug f traveling in the cam groove 70 of the cartridge lifter first throws the latter downward out of the path of the breech-block g. In the continued rearward movement of the slide bar it engages the dog 9 and so carries with it the breech-block to its rearmost position, as shown in Fig. 9. The extractors 12 and a draw out the empty cartridge shell from the chamber of the barrel and as the breech-block reaches its extreme rearward position the ejector n is actuated to throw the empty shell out of the receiver through the lateral opening (Z As the cartridge lifter approaches its lowest position the pin k thereof acts upon the cartridge stop 25 to throw its forward end upward in the position to prevent the rearward movement of the next cartridge in the magazine, following that which has passed upon the lifter. It will be noted that, except in the extreme forward position of the breech-block, the dog 9 is held down in engagement with the slide bar f by a rib d projecting from the inner lefthand wall of the receiver, so that in the forward movement of the slide bar the dog is held in engagement therewith and the breech-block is compelled to move forward with the slide bar until the dog is permitted by the cut away portion of the rib (Z to slip out of engagement with the slide bar. During such forward movement of the slide bar the cartridge lifter is at first raised sufliciently to place the cartridge thereon in front of the breech-block and then when the breech-block has reached its forward position is raised further to stand behind the breech-block and lock it in position for firing. The safety slide p is actuated as already described by the safety button 1" and by the movement of the lifter through the finger M.

It will be understood that the several features of the invention are not of necessity combined in one structure and that one or another may be employed in combination with other elements. It will also be understood that various changes in details of construction and arrangement may be made to suit difierent conditions of use and that the invention is not restricted to the particular construction, arrangement and combination of parts shown and described herein.

I claim as my invention:

1. In a firearm, the combination of a frame, a barrel, said frame and barrel be ing separable, a longitudinally movable grip piece, a slide bar carried thereby and entering the frame, a cylindrical guide for the grip piece, a lug connecting the guide to the barrel at the forward end of the guide and a longitudinally slotted sleeve-like stop mounted on the guide to stop the forward movement of the grip piece and adapted to be turned on the guide to bring its slide into alinement with said lug and to be moved forward to permit further forward movement of the grip piece and the withdrawal of the slide bar from the frame.

2. In a firearm, the combination of a frame, a barrel, said frame and barrel being separable, a magazine tube secured to the barrel by a lug at its forward end, a grip piece mounted on the magazine tube, a slide bar carried by the grip piece and entering the frame and a longitudinally slotted stop sleeve mounted on the magazine tube in front of the grip piece.

3. In a firearm, the combination with a frame, a barrel, a grip piece and a slide bar, of a cartridge lifter -mounted in the frame, an inertia block pivoted on the cartridge lifter and a slide bar stop device actuated by the movement of the inertia block to release the slide bar.

4. In a firearm, the combination with a frame, a barrel and a magazine, of a cartridge lifter mounted in the frame, a cartridge stop mounted in the forward end of the cartridge lifter and extending below the same somewhat remote from the end of the magazine and a cartridge stop lever pivoted in the frame and having its stop toe adjacent to the end of the magazine, the rear end of the stop lever being notched and the cartridge lifter having a stud entering the said notch whereby as the cartridge lifter approaches the limit of its downward movement the stop toe on the lever is moved into the path of the next cartridge in the magazine.

5. In a firearm, the combination of a' frame and a breech-block movable longitudinally in the frame and actuated therein, said breech-block comprising a main L- shaped part having a rearwardly extending portion, and a transversely disposed L- shaped part detachably secured to the rearwardly extending portion of the main part and having lugs to engage guide grooves in the frame.

6. In a firearm, the combination of a frame, a breech-block movable longitudinally in the frame, a firing pin mounted in the breech-block, an ejector mounted movably on the breech-block and means whereby the forward movement of the eject-or moves the firing pin rearwardly.

7. In a firearm, the combination of a frame, a breech-block movable longitudinally in the frame, a firing pin mounted in the breech-block, an ejector having one member extended across the face of the breech-block and another member extended rearwardly beyond the rear end of the breech-block, and a lever connect-ion between the ejector and the firing pin whereby the firing pin is withdrawn as the ejector is moved relatively forward.

8. In a firearm, the combination of a frame, a hammer, a trigger having a stop heel, a stop slide to cooperate with the stop heel on the trigger, a cartridge lifter and means actuated by the movement of the cartridge lifter to shift the stop slide.

9. In a firearm, the combination of a frame, a hammer, a trigger having a stop heel, a stop slide to cooperatewit-h the stop heel on the trigger, a cartridge lifter cooperating with the stop-slide, a safety but ton and connections to actuate the stop slide.

10. In a firearm, the combination of a hammer, a trigger having a stop heel, a stop slide having a recess to receive the stop heel and permit movement of the trigger, a cartridge lifter, and a finger moved with the cartridge litter and engaging the cartridge lifter and adapted to engage the 10 stop slide to shift the same. stop slide tozshift the same.

11'. In a firearm, the combination of a This specification signed and witnessed frame, a hammer, a trigger having a stop this 6th day of June A. D., 1911. heel, a stop slide mounted in the frame and having a recessto receive the heel of the GEORGE trigger and permit movement of the trig- In the presence ofger, a safety button and connections to shift V. B. GREELEY, the stop slide and a finger carried by the AMBROSE L. OSHEA.

- AAR- Copies of this patentmay be obtained for five cents each, by addressing the Commissioner of Patents,

, Washington, D. G.

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