US3447526A

US3447526A - Cocking device

Info

Publication number: US3447526A
Application number: US547132A
Authority: US
Inventors: Jiri Cermak; Karel Vystrcil; Bohuslav Novotny
Original assignee: ZAVODY JANA SVERMY NARODNI PODNIK
Current assignee: ZAVODY JANA SVERMY NARODNI PODNIK
Priority date: 1965-05-03
Filing date: 1966-05-02
Publication date: 1969-06-03
Anticipated expiration: 1986-06-03
Also published as: GB1100353A; DE1553970A1

Description

June 3, 1969 E R ET AL 3,447,526

COCKING DEVICE Filed May 2, 1966 W V INVENTQRS Jim CERMAK, Karel VYSTRCIL BY: Bohuslqv NOVOTNY United States Patent COCKING DEVICE Jiii Cermak, Karel Vystril, and Bohuslav Novotny, Brno, Czechoslovakia, assignors to Zavody Jana Svermy, narodni podnik, Brno, Czechoslovakia, a corporation Filed May 2, 1966, Ser. No. 547,132 Claims priority, application Czechoslovakia, May 3, 1965, 2,865/65 Int. Cl. F41b 17/02 US. Cl. 124-40 Claims ABSTRACT OF DISCLOSURE This invention relates to an improved cocking device adapted particularly for automatic weapons. The cocking device forming part of this invention serves simultaneously as a safety lock against accidental discharge of the weapon and is particularly designed for weapons utilizing compressed air or gas as a propellant.

Known cocking devices for automatic weapons of the aforedescribed character apply different principles. One known design of a cocking device comprises a handle which is pivotally supported by its bolt in the lateral wall of the body of the weapon and is arranged outside of this body. A one armed lever is fixed at the opposite end of said bolt inside the body of the weapon, with a cocking lever provided at its free end which has a catch for engagement with the slidably arranged breech of the weapon.

A drawback of this known cocking device for automatic weapons lies in its complicated design requiring a system of two levers with a rod. Another drawback of this known cocking device lies in that it does not allow the arrangement in the device of a safety lock which could directly prevent an accidental discharge of the weapon.

It is an object of this invention to eliminate these drawbacks by providing a bolt within the body of the weapon, which is firmly connected with a cocking lever, rounded at its free end for engagement with a sliding surface of the hammer, the latter being slidably arranged within the body of the weapon.

An advantage of the cocking device according to this invention lies in the simplicity of its design when compared to known cocking devices, and further its ability to act simultaneously as a safety lock against accidental discharge of the weapon.

The aforementioned, as well as additional objects, features and advantages of the present invention will become more clearly apparent from the following detailed description thereof which is to be read with reference to the accompanying drawings, in which:

FIG. 1 is a schematic elevation with a partial longitudinal section of a piston incorporating the improved cocking device of this invention;

FIG. 2 is a partial cross sectional top view of the piston with the cocking device; and

FIG. 3 another partial cross section of the piston with the cocking device.

The schematically shown piston comprises the body 1, to which the barrel 2 is firmly anchored, and a handle 3 similarly fixed to the body 1. The usual mechanisms present in a standard air pistol are arranged within the body 1 and within the handle 3, particularly, the not shown pressure vessel, the valve with its stem 4, the trigger mechanism with the trigger 5 and with the trigger lever 6, the hammer 7, the not shown magazine and the novel and improved cocking device forming part of this invention. The cocking device comprises a cocking lever 8 arranged within the body 1, provided on one end with a bolt 9 pivotally mounted in the lateral wall 10 of the body 1 and perpendicular to the cocking lever 8. A handle 11 is fixed with one end to the bolt 9, for instance by means of a pin 12 perpendicular to said bolt 9 which extends through the bolt 9 outside of the body 1. The handle 11 is provided at its other end with a dead end bore 13 facing with its open end the body 1. A catch 14 with a rounded face 17 and a spring 15 are slidably ar ranged within said dead bore 13, whereby two recesses '16 are provided in the lateral wall 10 of the body 1 for engagement with the catch 14, thereby effectuating the locking in position of the handle 11 in its two extreme positions. The cocking lever 8 terminates at its free end with a rounded part 18 adapted to slidably engage a corresponding surface 27 of the hammer 7 which is slidably mounted in the body 1 of the pistol. The hammer 7 has a piston extension 19 of cylindrical shape with which it extends into a cavity 20 partially closed at its opposite end by a rear part 21 of the barrel 2 having the bore 23. The hammer 7 is spring loaded in the direction towards the barrel 2 by the spring 24 which abuts with one end against the bottom of a not shown recess within a hamrner 7 and with its other end against a collar 25. The latter is connected to the guiding rod 26, one end of which extends freely into the not shown cavity and its opposite end extends into a mating passage in the pistol body 1. The hammer 7 is provided near one lateral wall 10 of the body 1 with a sliding surface 27 for engagement with the cocking lever 8. The hammer 7 is furthermore provided with an extension 28 for engagement with a catch 29 of the trigger lever 6.

The cocking operation of the pistol is accomplished by taking hold of the handle 11 with one hand and by turning it about the axis of the bolt 9 along the lateral wall 10 of the body 1 in a direction away from the barrel 2. At the start of this movement the catch '14 with its rounded face 17 comes out of engagement with the first recess 16. In the course of turning the handle 11, the cocking lever 8 firmly connected therewith is moved through the same angle and engages with its rounded part 18 with the sliding surface 27 of the hammer 7. In the course of the subsequent angular movement of the handle 11 and the cocking lever 8 the hammer 7 is longitudinally shifted against the action of the spring 24. The cocking lever 8 then shifts due to the action of a not shown spring, with its catch 29 in front of the extension 28 of the hammer 7. The handle 11 is thereafter returned to its original position, where the catch 14 with its rounded face 17 again engages due to the action of spring 15 into the first recess 16 in the lateral wall 10 of the pistol body 1. In case the weapon has to be locked against accidental discharge, the handle 11 is turned in a similar way as when cocking the hammer 7, the turning angle of the handle 11 is however, increased to such a point where the cocking lever 8 is approximately perpendicular to the sliding surface 27 of the hammer 7 and prevents thus the movement of the hammer 7 towards the shaft 4 of the not shown valve when the trigger 5 is appropriately moved. The catch 14 of the handle 11 engages in this locked position with its rounded face 17 into the second recess 16 in the lateral wall 10 of the body 1. The weapon is unlocked by returning the handle 11 into its Original position so that the weapon is prepared for action.

The improved cocking device of this invention can be applied to different weapons, particularly to weapons using compressed air or compressed gas as a propellant.

Although our invention has been illustrated described with reference to one preferred embodiment thereof, we wish to have it understood that it is in no way limited to the details of said one embodiment but is capable of numerous modifications within the scope of the appended claims.

What we claim is:

1. In the body of a weapon of the character described, said body having a pair of opposite lateral walls, a safety lock for weapons, which comprises in combination:

a bolt rotatably mounted in one of said pair of opposite lateral walls and having respectively a first portion projecting outside of said body and a second portion projecting inside of said body;

a handle secured to said first projection portion of said bolt, said handle being located outside of said body of said weapon and pivoting in a plane parallel to and spaced from the longitudinal axis of said weapon;

a cooking lever secured to said second projecting portion of said bolt and operatively arranged within the body of said weapon;

a hammer slidably mounted within the body of said weapon, said handle being adapted to be manually rotated thereby rotating said bolt and cocking lever and bringing the latter in abutting slidable contact with means on said hammer in order first to retract said hammer and second to lock said hammer in retracted cocked' position and thereby avoid the accidental triggering thereof.

2. The safety lock for weapons as set forth in claim 1, wherein said handle and said bolt, on the one hand, and said cocking lever and said bolt, on the other hand, are respectively secured to each other so as to be substantially perpendicular with respect to each other.

3. The safety lock for weapons as set forth in claim 2, wherein said cocking lever has a rounded surface at its free end inside said body, and said hammer has a sliding surface, said rounded surface of said cocking lever being adapted to contact said sliding surface of said hammer and said cocking lever being substantially perpendicular to said sliding surface when said cocking lever locks said hammer in position.

4. The safety lock for weapons as set forth in claim 1, including a locking means in said one wall of said pair of opposite lateral walls for locking said handle in a first inactive position, wherein said cocking lever is not in contact with said hammer and a second position wherein said cocking lever is in contact with said hammer.

5. The safety lock for weapons as set forth in claim 4, wherein said locking means comprise a projecting member movably mounted adjacent to the free end of said handle, and biasing means operatively mounted in said handle urging said projecting member to extend outwardly.

References Cited UNITED STATES PATENTS 2,172,036 9/1939 Sehmeisser 12437 XR RICHARD C. PINKHAM, Primary Examiner.

W. R. BROWNE, Assistant Examiner.

US. Cl. X.R. 124-30