US726251A

US726251A - Magazine bolt-gun.

Info

Publication number: US726251A
Application number: US72455099A
Authority: US
Inventors: Chapin C Brooks
Original assignee: Individual
Current assignee: Individual
Priority date: 1899-07-20
Filing date: 1899-07-20
Publication date: 1903-04-28
Anticipated expiration: 1920-04-28

Description

PATENTED APR. 28, 1903.

O. O. BROOKS. MAGAZINE BOLT GUN.

APPLICATION IILED JULY 20, 1899.

KO MODEL.

a, fnvenln PATENTED APR. 28, 1903.

C. G. BROOKS.

A'PPLIQATION FILED JULY 20, 1899.

GAZINE BOLT GUN.

2 SHEETS-SHEET 2.

N0 MODEL.

Wi in 6532s 1% 'tion of the portions within the frame, part of bolt and the device controlling the magazines.

' bolt, the latter being retracted.

themes dramas Parent @rrrns.

CHAPIN C. BROOKS, OF \VILTON, MAINE.

MAGAZiNE sour-eon $PECIFICATION forming part of Letters Patent No. 726,251, dated April 28, 1903. Application filed July 20,1899. Serial No. 724,550. (No model.)

To all whom it may concern:

Be it known that l, CHAPIN O. BROOKS, a citizen of the United States, residing at Wilton, in the county of Franklin and State of Maine, have invented a certain new and useful Improvement in Bolt Magazine-GL1 ns; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to bolt magazine-guns; and it consists in an improved frame, an improved breech-bolt, an improved means of operating the same, and an improvement in the means for controlling the magazines and feeding the cartridges from the latter iuto the gun.

In the drawings, Figure 1 is a side eleva the frame and the right-hand magazine being removed, the barrel being shown in vertical longitudinal section. Fig. 2 is a vertical longitudinal section of the breech-bolt, the firing-pin being retracted, as when the gun is cooked. Fig. 3 is a vertical transverse section of the magazine, showing cartridges in posit on and the breech-bolt closed. Fig. 4 is a vertical transverse section of the breech- Fig. 5 is a bottom plan of the arm which operates the device which controls the magazines and the arms 0 0. Fig. 6 is a side elevation of the frame, with part of. the frame and cover of the magazine broken away. Fig. 7 is a top plan of part of the frame and breech- Fig. 8 is an elevation of the outer side of the cam-lever A. Fig. 9 is a transverse horizontal section of the rear part of the magazines and of the mechanism controlling the movement of the cartridges, and Fig. 10 is a side elevation of the inner side of the can1-lever with adj-ac out part of the frame.

Referring to the drawings, a represents the frame, I) the barrel, and c the breech-bolt.

The frame a is shown in Figs. 1, 3, 6, and 7. It has a flattened top with curved sides. In the top is a rectangular longitudinal slot 6", which extends backward from the rear of the barrel to the rear of the magazine, having a bridge or tie. 7 between the slot 6 and the rear of the frame, as seen in Fig. 7. The rear of the frame has a slight slot to receive the rear end of the breech-bolt, while the right side of the curved wall is elongated into the ear 5. (See Fig. 7.) On the inner side of this ear is a stud l4.

The construction of the breech-bolt c is shown in detail in Fig. 2. It has the usual cartridge-retractor d, a spring-actuated firingpinf, and a cartridge-ejectorj, actuated by the spring 7c,while e is the cocking-head of the firing-pin. Near the rear end of'the breechbolt is a recess 8 in its upper surface, which receives the bridge 7 of the frame. Fixed to the under side of the breech-bolt beneath the extractor is the piece m, the lower outer edges of which are provided with flanges m The cocking-head has on the right-hand side a spring-actuated dog 7, in front of which on the same side is a projection 9, having in its forward surface a semicircular recess 10. Upon the under side the cocking-head is provided with a notch a. to receive the sear p. The rear end of the breech-bolt is provided with a circular transverse perforation 4, di rectly in front of which on the right-hand side is a pin 6. The office of the perforation i is to receive the stud 13 of the cam-lever A. The inner or left-hand surface of the cam-le ver A, as seen in Fig. 1, has upon its surface directly beneath the stud 13 a stud 12, while at the rear of the lower edge is another stud 11. The outside of the cam-lever A is provided with a recess 15, which terminates at the lower end in a curve. (See Fig. 8.) This recess is designed to receive the stud 14:, already described. (See Fig. 7.)

The magazines, which are located on either side of the gun, are of similar construction and are provided with carrier-arms 2 and fingers 3, pivoted at their'rear ends to the ends of the carrier-arms 2.and actuated by springs 4, respectively, as seen in Fig. 6. Each carrier-arm has its lifting-spring to raise it and its superimposed cartridges. The construction of the magazines and their location with reference to the breech-bolt are shown in Fig. 3, 02. n being the inner walls thereof, termihating at the top in the flanges m m, and n or are the doors or covers.

Themechanism for advancing and throwing the cartridges in front of the breech-bolt 0 when the latter is retracted is situated in the rear or near the rearof the cartridge boxes or hat dhasabout mlwaq;

in m

S0 10 an either the nu n 'r the with a,- 3

of aha :u'm Z 5) w pm L219 on and mm H10 rec 4J0 Lwe-an he is a Alix mine .m W

n it

lma'm' magazn e N the ins 1 when the gun has been fired five times or more, the right-hand magazine becomes ex hausted and it is necessary to refill the righthand magazine or draw upon the left-hand magazine. The left-hand magazine has hitherto been locked, and it it is desired to draw upon it it is necessary to push forward the button 13 on the lever Z, whioh has the eftect by reason of the play of the pin at in the oblique slot 2 in the lever Z to carry the shaft 1' into the slot 3 in the left-hand cam-lever 8. The left-hand magazine is thus called into action, as the right-hand cam-lever 8 no longer operates and the function performed by it heretofore is consequently performed by the lefthand cam-lever l. The forward end of the breech-bolt as it is retracted and returned slides upon the flanges m m of the walls n n of the magazines, the flanges m of the piece m keeping it in position. The breech-bolt may be further guided in its movement into and from its recess in the breech-bolt opening by a flange or similar means attached to the frame in the rear of the breech-bolt when closed and adapted to enter the longitudinal groove 6 in the breech-bolt.

\Vhat I claim is- 1. In a gun, the combination ot-movable arms and a depressible retractable breechbolt, the latter provided with a longimldinal groove adapted to receive projections upon the inner sides of the former and a sear pivoted between and carried by said arms, substantially as described.

2. In a gun, the combination of a breechbolt having a spring-actuated firing-pin and cocking-head with a cam-lever whereby the breech-bolt maybe depressed from its recess in the frame and retracted and means whereby the cocking-head may be partially retracted when said bolt is depressed, substantially as described.

3. In a gun, the combination of a breechbolt having a spring-actuated firing-pin and cocking-head, a cam-lever whereby the fi ing pin may be rel racted in the breech-bolt while the breech-bolt is being depressed and means whereby said lever and said firing-pin may be locked when the firing-pin has been retracted as aforesaid, substantially as described.

4:. In a gun, the combination with a breech bolt having a spring-actuated firing-pin and cocking-head,a cam-lever whereby the breechbolt may be first depressed and then retracted from its recess in the frame and then returned and elevated in said recess and means for locking said lever while said bolt is depressed, substantially as described.

5. In a gun, the combination of movable arms and a depressible retractable breechbolt, the latter provided with a longitudinal groove or grooves adapted to receive projections on the inner sides of the former, magazine or magazines at the side of the breech and means, operated by the movement of said arms, whereby the uppermost cartridge of the magazine is advanced ready for deliveryinto the receiver, substantially as described.

6. In a gun provided with a magazine on each side of the breech-bolt, means for feeding from either of said magazines actuated by the withdrawal of said bolt, substantially as described.

7. In a gun provided with a magazine on each side of the breech-bolt, means for feeding from either of said magazines actuated by v the depression and withdrawal of said bolt and means for connecting said operative mechanism with either magazine, substantially as described.

S. In a gun provided with a magazine at'the side of the breech-bolt, means for holding the uppermost cartridge in said magazine until the breech-bolt is depressed,and means whereby the said cartridge is released by the depression of said bolt and advanced along the side of the breech-bolt whence upon with drawal of said bolt it enters the receiver, sub-' stantially as described.

In testimony that I claim the foregoing as my invention I have hereunto set my hand this 15th day of July, A. D. 1899.

CI'IAPIN O. BROOKS.

In presence of- Gno. E. BIRD, A C. BERRY.