US2460598A

US2460598A - Magazine pistol safety and cocking mechanism

Info

Publication number: US2460598A
Application number: US520606A
Authority: US
Inventors: Frank D Rosvall
Original assignee: Individual
Current assignee: Individual
Priority date: 1944-02-01
Filing date: 1944-02-01
Publication date: 1949-02-01
Anticipated expiration: 1966-02-01

Description

Feb. 11, 1949. F. D. ROSVALL. ZAQSQS MAGAZINE PISTOL SAFETY AND GOCKINGMECHANISM Filed Feb. 1, 1944 2 Sheets-Sheet l V 95 Fg' INVENTOR. flank J2 Ros/0&5

BY ATTORNEY.

Feb. 3, @949. D. ROSVALL. 1460,59

MAGAZINE P ISTOL SAFETY AND COCKING MECHANISM Filed Feb. 1, 1944 2 Sheets-Sheet 2 BY ATTORNEY Patented Feb. 1, 1949 UNITED STATES AT FFEQE Frank D. Rosvall, Worcester, Mass.

Application February 1, 19.44, Serial No. 520,606

4' Claims.

This. invention relates to a pistol adapted to. receive a magazine or holder containing a plural ity of cartridges, and arranged to reload auto matically after each cartridge is fired.

It is the general object of my invention to improve and simplify the construction of this type of pistol, particularly by eliminating exposed moving parts.

A further object of the invention is to provide means by which simple insertion of the magazine effects the loading and cocking of the pistol without further manipulation. I have also provided an improved double safety device.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and moreparticuiarly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a front side elevation of my improved pistol, partly in section and with the front wood side casing member removed, and with the magazine partly inserted;

Fig. 2 is a. sectional front side elevation of the pistol, with the magazine fully inserted and the pistol loaded and ready to fire;

Fig. 3. is a partial front side elevation, partly in section and with the front wood side casing member removed, and showing certain of the parts in Fig. 1 but in a different position;

Fig. 4 is a partial side rear elevation; with the housing partly in section, the back wood side casing member removed, and with certain parts omitted for clearness;

Fig. 5 is a diagrammatic detail side rear elevation showing the operation of the safety lock;

6 is a detail side rear elevation, further illustrating the safety feature;

Fig. '7 is a partial rear side elevation, partly in section and showing a sear-release mechanism operative as the magazine is inserted; and

Fig. 8 a partial sectional plan view of the breech-block.

Referring to the drawings, I have shown a magazine pistol having a frame lfl provided. with a handle portion ll. adapted to receive a magazine M. The handle portion H and the greater part of the frame H1 are to be covered with front and back wood side casing members, not shown in the drawings. The frame is provided with the usual barrel i2, breech-block M and trigger l5. A firing pin 55 (Fig. 2) is slidable in the breechlock 14 and is provided with a ledge ll engaged by the rear end of a sear l8 when the pistol is cooked.

The scar is is pivoted at 19 and is normally held I 2 in raised or cooking position by a spring-actuated pin 26. The sear is rocked to release the firing pin by manual movement of the trigger l5, operating through. a connector 22. All of these parts are or may be substantially of usual construction.

The breech-block housing 25 has. a V-shaped engaging portion 2% at its forward end and a depending lug 2.1 at its rear end through which a locking pin 28 may be inserted.

The magazine M is provided with a plunger 3%, yieldingly pressed upward by a spring 31. The uppermost cartridge C is prevented from up ward escape from the magazine by the. inwardly offset upper edges 32 of the side walls of the magazine. The magazine has a bottom plate 33 having an extension 34. by which it may be conveniently withdrawn when empty. A springpressed latch 35 (Fig. 2) retains the magazine in loaded position until the latch is. manually removed to release the magazine.

As the magazine M is inserted in the handle portion ii, a pin ii! (Fig. 1) on the magazine enters a slot M in a bell crank or lever 42 which is pivoted at 43 in the frame It. As an empty magazine is removed from the pistol, a 111g 44. at the upper end of the bell crank 42 moves to position to engage a pivoted abutment 45 (Fig. 8) at the side of the breech-block l4. As a magazine is thereafter inserted, the bell crank 42 forces the breech-block back to its extreme rearward or right-hand position, as shown in Fig. 3, and the uppermost. cartridge C takes a position in which its upper rear edge will project into the path of the breech-block. As upward movement of the magazine is completed, the bell crank 42 clears the abutment t5 and the breech-block is moved forward by its spring 46 to push the cartridge G into firing position in the barrel l2, as shown in Fig. 2.

The pivoted abutment inv the side of the breech-block I4 is yieldingly pressed outward by a coil spring 6'! (Fig. 8). A pivoted and yielding mounting of the abutment 45 is necessary in order that the lug M at the upper end of the bell crank 32 may swing past the abutment to the left. in Fig. l as an empty magazine M is being removed from the pistol. ihe bell crank is thus placed in position to move the breech-block 14 to the right as previously described when a new magazine is inserted.

When the breech-block M was moved rearward, the firing pin I6 was similarly moved rearward and was thereafter caught by the sear l8 as the breech-block returned to the forward position shown in Fig. 2.

The breech-block M has a recess 4'! (Fig. 5) in its under side at one edge, which recess normally receives a lug or projection G8 on the connector 22 when the breech-block is in forward or firing position. As the breech-block moves rearward after firing, the connector 22 is depressed by the breech-block to the full line position shown in Fig. 5.

This disconnects the trigger i5 from the sear i8 during the reloading operation, so that single shots only will be fired, even if the trigger is held in firing position during the reloading. The trigger being disconnected from the sear at this time by depression of the actuator 22, the sear will catch the firing pin and cannot be moved to release the firing pin until both the breech-block and the trigger have returned to their normal loaded and cocked positions.

My improved safety device comprises a half round shaft 5Q (Fig. 5) having an arm 5! at one end and a cam 52 (Fig. 6) at the other end. When the armfil is swung downward, the trigger it is locked from movement, and when the arm is swung upward, the trigger is unlocked. Also, when the arm 5| is swung upward, the cam 52 (Fig. 6) engages a slide 54 having a cross piece 55 normally underlying the rear end of the sear i8, as indicated in full lines in Fig. 6. This cross piece normally prevents downward or releasing movement of the sear with respectto the firing pin. Upward movement of the cam 52 to the dotted line position shown in Fig. 6 moves the cross piece 55 rearward to the dotted line position shown in Fig. 6, in which position it clears and releases the sear I8.

I have thus provided a double safety look, as the shaft 58 locks the trigger l5 and the cross piece 55 looks the sear l8 when the arm 5! is in lowered or safety position.

With the arm El in safety position and the sear i8 locked, it is necessary to release the sear momentarily when the magazine M is inserted and as the breech-block It is moved rearward by the bell crank 42. For this purpose, I provide a plunger 56 (Fig. 7) which at its upper end engages a shoulder ti on the lower edge of the slide The lower end of the plunger 60 projects into the path of the magazine M. As the magazine is pushed upward in the handle I i, the upper end of the magazine engages the lower end of the plunger 60, as indicated at Fig. 7, and moves the slide 54 to the left against the pressure of'a U- shaped spring 63, thus releasing the sear i8. As the magazine is fully inserted, the lower end of the plunger 67 enters a recess 65 in the edge of the magazine M. The slide 54 and cross piece 55 then return to their right-hand or safety positions.

A spring-pressed plunger 68 (Fig. 5) tends to raise the connector 22 when the breech-block i4 is in firing position and the notch 41 overlies the lug 48.

Having described the details of construction of my improved automatic pistol, the method of operation and advantages thereof will be readily apparent.

One important advantage lies in the possibility of one-hand operation for reloading and cooking. The operator merely inserts the fresh magazine in the handle I I as indicated in Fig. 1 and pushes it inward to the position shown in Fig. 2-. The magazine will then be retained by the latch 35 and the simple inward movement, acting through the bell crank 42, results in loading and cooking the pistol without any other attention by the 4 operator. Thereafter the single shots may be fired as rapidly as desired and the pistol will be automatically reloaded and cocked after each shot until the magazine is empty. Such one-hand operation might be very advantageous to a person having one hand or arm out of commission from any cause.

By shifting the arm 5| to its lowered position, both the trigger i5 and the sear l8 are securely locked in safety positions. absence of exposed moving parts will also be particularly noted. The trigger l5 and the arm 5i are the only moving parts which are visible or accessible when the pistol is fully assembled.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

l. A magazine pistol comprising a frame having a handle portion, a breech-block mounted for reciprocal movement on said frame, a magazine insertable in said handle portion, and a withdrawing member engaged by the magazine as it is inserted in said handle portion and coacting with said breech-block to move said breech-block rearwardly during such magazine insertion, said member clearing and releasing said breech-block for return to normal forward position as such magazine insertion is completed, and said withdrawing member thereafter remaining in rearward position but being returned to its original forward position by subsequent removal of the empty magazine from said handle portion.

2. A magazine pistol comprising a frame having a handle portion, a breech-block mounted for reciprocal movement on said frame, a magazine insertable in said handle portion, a withdrawing member engaged by the magazine as it is inserted in said handle portion and coacting with said breech-block to move said breech-block rearward- 1y during such magazine insertion but clearing and releasing said breech-block for return to normal forward position as such magazine insertion is completed, said withdrawing member being thereafter returned to its original forward position by downward movement of the empty magazine as said magazine is removed from said handle portion, and said breech-block having a latch normally coacting with said withdrawing member but which yields laterally when engaged by said member as said member is returned to its original position.

3. In a magazine pistol, a frame, a firing pin, a sear effective .to engage and hold said pin, a safety device effective to lock said sear from pinreleasing movement, a magazine insertable in said frame, and means to unlock said sear by insertion of said magazine and to restore said sear to looked condition by completion of such insertion.

4.. In a magazine pistol, a frame, a firing pin, a sear to engage and hold said pin, a safety device effective to lock said sear from releasing movement, a magazine insertable in said frame, and a plunger coacting with said safety device and positioned for operative engagement by the magazine and displaced thereby to remove said safety device and to thereby unlock said sear during the latter part of the magazine insertion and said plunger being freed from said magazine by complete insertion of said magazine and thereupon releasing said safety device for sear-locking action.

FRANK D. ROSVALL.

(References on following page) The almost complete 5 REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Number Name Date Searle Nov. 1, 1921 Floyd July 5, 1932 FOREIGN PATENTS Country Date Great Britain July 1, 1930 Germany Nov. 23, 1922