RU2305822C2 - Pistol - Google Patents

Abstract

FIELD: armament; small arms.

SUBSTANCE: proposed pistol has frame, barrel, grip with cartridge clip, cylinder with two cartridge seats, slide bar with return spring mounted on it and mechanism for turning the cylinder through 180°. Cylinder turning mechanism is made in form of two bushes received by hole in cylinder: spring-loaded bush with rigidly secured dowel pin; this bush is rotatable; and bush with tetrahedral butt which is fixed. Bushes are engageable by means of teeth having beveled surfaces. Slide bar is provided with compression spring located inside bolt. Slide bar has spiral groove engageable with dowel pin of spring-loaded bush.

EFFECT: improved mechanized turn of cylinder through 180°.

1 dwg

Description

The invention relates to weapons, in particular to small arms.

As a prototype, a pistol was taken containing a frame, a barrel, a handle with a cartridge holder, a free bolt, a drum with two cartridge slots, a guide rod with a return spring mounted on it. The upper cartridge holder and the lower drum socket into which the cartridge is fed are coaxial, and after the drum rotates through 180 °, the cartridge in the drum is placed coaxially with the barrel channel, which eliminates the possibility of the cartridge skewing, sticking it into the stump of the barrel and delaying the shot. The exception of the possibility of skewing the cartridge is also provided by the conical shape of the hole in the handle, designed to feed cartridges from the holder into the drum, and by the conical expansion of the drum sockets (RF Patent No. 2122172, 1992).

Its disadvantage: to rotate the drum 180 ° requires a long press on the trigger, which reduces the rate of fire.

The purpose of the invention: mechanized rotation of the drum 180 °. The specified goal is achieved by the following constructive solution. The gun contains a frame, a barrel, a handle with a cartridge holder, a free shutter, a drum with two cartridge slots, a guide rod on which two compression springs are installed, a drum rotation mechanism of 180 °.

The invention is illustrated in the drawing.

The drawing schematically shows the pistol assembly and details of the rotation mechanism of the drum, a longitudinal section, side view.

The barrel 2 is rigidly fixed on the frame 1. A holder 4 with cartridges is mounted in the handle 3. A drum 6 with two cartridge slots equipped with a cartridge retainer (not shown) is rotatably mounted on a guide rod 7 mounted with axial return movement on frame 1, in the holes of the drum 6 and the shutter 8. On the guide rod, made with a helical groove 9, turning into straight grooves, there is a return spring 10. At the opposite end of the guide rod installed in the shutter, there is an SLE knowing the slot accommodating the stopper 11 and the set compression spring 12 is less rigid than the return spring. The shutter 8 is made with grooves 13 for the stopper 11, a longitudinal protrusion 14 with rounded edges, designed to supply cartridges from the holder to the drum, and beveled front bottom edge.

The rotation mechanism of the drum 6 through 180 ° is installed in its hole and consists of a spring-loaded sleeve 15 rotatably mounted with a pin 16 and a sleeve 17 with a 4-sided end mounted fixedly. The bushings interact through teeth made with a beveled surface. The pin 16 of the sleeve 15 is placed in a helical groove 9 of the guide rod 7.

The casing 18 of the return spring 10 is mounted on the frame 1 using the latch 19.

The gun is equipped with a ratchet (not shown) that prevents the drum from rotating in the direction opposite to the rotation of the drum rotation mechanism. The principle of obturation is the same as that of existing revolvers. The trigger mechanism from a pistol of an existing design, for example, the Makarov system.

The gun works as follows.

Insert into the handle 3 a clip 4 with cartridges 5. Take the shutter 8 to the limit and release it. When the shutter moves to the extreme retracted position, abbreviated: opening, the springs 10, 12 are compressed. Due to the bevelled surface, the teeth of the bushings 15, 17 slip relative to each other, are not engaged, and the drum 6 does not rotate. When moving the shutter to its original position, in abbreviated form: closing, by the springs 12, 10, the spring 12 opens earlier, shorter length. The protrusion 14 of the shutter moves the upper cartridge 5 into the lower socket of the drum 6, where the cartridge is held by a latch (not shown). The helical groove 9 of the guide rod 7 reaches the pin 16 of the sleeve 15 and rotates the sleeve 15, 17, the teeth of which are engaged, and together with the sleeve rotates the drum 6 by 180 °. Due to the rounded edges, the protrusion 14 and the shutter 8 do not interfere with the rotation of the drum 6. The conical protrusion of the shutter prevents spontaneous rotation of the drum.

The distance by which the spring 12 is compressed by the return spring 10 must exceed the length of the helical groove 9 of the guide rod 7.

Under the action of the return spring 10, the guide rod 7 returns to its original position, compressing the spring 12 inside the shutter 8. The return spring 10 must be stiff enough to ensure failure-free operation of the drum rotation mechanism and press the shutter 8 through the spring 12 to the drum 6 with a force optimal for pistols of this caliber.

After the shot, the shutter is removed by powder gases through the sleeve. The sleeve is ejected by the extractor and reflector (not shown). Unimpeded removal of the cartridge case or cartridge during misfire is ensured by the beveled lower part of the shutter diverting the latch (not shown). The shutter moves to its original position placed in it by a spring and a return spring.

The drum rotates only in one direction, when moving the shutter to its original position.

The peculiarity (or disadvantage) of the gun: when loading, taking the bolt to the limit, it should be released so that it returns to its original position under the action of the spring installed in it and the return spring. If you move the shutter to its original position manually, for example for silent loading, the return spring will compress the spring inside the shutter and the shutter will close when the spring is compressed in it, which may disrupt the rotation of the drum.

Partial disassembly of the gun.

Remove from the handle 3 a clip 4 with cartridges 5 and jerk the shutter to make sure there is no cartridge in the drum, or remove the cartridge from the drum. Release the latch 19 and remove the casing 18. Press the end of the guide rod 7 until the stopper 11 exits the shutter 8, remove the stopper and spring 12. Take the guide rod out of the shutter of the drum 6 and frame 1. In this case, the pin 16 of the sleeve 15 does not prevent the removal of the guide rod, as a straight groove into which a screw-like transition passes is made up to the end — from the bolt side — of the guide rod.

Complete disassembly.

From the opening of the drum 6 take out the sleeve 15, 17 and the spring, which is spring loaded sleeve 15. Disassemble the trigger mechanism.

Assemble in the reverse order.

Claims (1)

A gun containing a frame, a barrel, a handle with a cartridge holder, a drum with two cartridge slots, a guide rod with a return spring mounted on it, and a drum rotation mechanism of 180 °, characterized in that the drum rotation mechanism is made in the form of two bushings installed in the hole of the drum: a spring-loaded sleeve with a rigidly fixed pin mounted for rotation, and a sleeve with a 4-sided end mounted stationary, while the sleeve is made to interact by teeth, made with a beveled surface, a compression spring installed inside the shutter is installed on the guide rod, and the guide rod is made with a helical groove interacting with the pin of the spring-loaded sleeve.