RU2084797C1 - Bogomazov submarine gun - Google Patents

Abstract

FIELD: automatic feed of cartridges from magazine located in pistol grip. SUBSTANCE: at a shot under the pressure of discharged powder gases the gas pusher moves backward over the barrel moving the cartridge pusher until the cartridge rests against the front lateral lug of the double-loading safety lock. When the cartridge pusher stops, its pin sliding along the longitudinal grooves compresses the spring. When the disconnector of the gas pusher approaches the stop surface of the double-loading safety lock that is spring-loaded from the bottom, it forces out the stop surface downwards, and the spring catches get compressed releasing only the upper cartridge. The double-loading safety lock goes down and the cartridge pusher moves the upper cartridge from the magazine to the feeder, which raises the cartridge and rests against the bends of the false magazine. Under the action of the return spring the gas pusher moves in the reverse direction resetting the automatic cartridge feed mechanism. EFFECT: improved design. 2 cl, 14 dwg

Description

 The alleged invention relates to small arms, in particular, to devices for automatically feeding cartridges from a magazine located in a pistol grip.

 As a result of a patent search conducted by the Central Scientific and Technical Library of the city of Rostov-on-Don, no analogues were found among the patent literature, so the prototype was selected from the scientific and technical literature.

 The closest technical solution to the proposed one is the small-sized Uzi submachine gun. It combines the control handle with the neck for the store. Thanks to this arrangement, the submachine gun turned out to be very compact. Reducing the length of the receiver, and, accordingly, of all weapons, also contributes to the special design of the bolt, which covers the breech of the barrel. The disadvantage of this submachine gun is its low firepower, since with a decrease in the length of the receiver, accordingly, the length of the barrel is reduced, which leads to a decrease in the initial speed of the bullet and the firepower of the weapon.

 Similar to the Uzi submachine gun and have the same drawback, the Ingram and Scorpion submachine guns.

 The aim of the proposed invention is to increase the firepower of a submachine gun while maintaining its small size and compactness.

 To solve this problem, a submachine gun containing a barrel, a bolt and a magazine located in the pistol grip is equipped, according to the invention, with a mechanism for automatically feeding cartridges from the magazine. The above mechanism is made in the form of a feed channel, a pusher of cartridges, which is movably connected with a gas pusher. The energy of the powder gases discharged from the bore to the gas chamber for translational movement of the bolt frame "back and forth" is used simultaneously to actuate the gas pusher.

 The cartridge feeding mechanism also includes a double-loading fuse and a cartridge feeder.

 In this case, the store is shifted to the middle of the weapon relative to the breech of the barrel by 1/3 of the length of the latter.

 In addition, the shoulder rest is designed so that it can be folded in the "down-forward" direction and in one of the folded states is the front grip handle for firing from the side, and in the other folded state it is completely adjacent to the weapon body.

 The invented mechanism makes it possible to feed cartridges from the magazine not directly into the breech of the barrel, but through the feed channel located under the barrel and parallel to it. This allows you to increase the length of the barrel in relation to the length of the weapon, while maintaining the small dimensions of the compactness of the weapon. At the same time, it was possible to achieve a ratio of lengths of 0.7, while in the well-known small-sized submachine guns it does not exceed a value of 0.55 (See Appendix 3).

 Elongation of the barrel channel affects the increase in the initial speed of departure of the bullet, which, in turn, increases the firepower of the weapon. The latter is also achieved by completely locking the bore until the bullet passes through the vent hole in the barrel.

 The location of the store in the middle of the weapon creates favorable conditions for centering the weapon when changing the amount of ammunition in the store during firing, which significantly affects the accuracy of shooting, and also allows you to get a convenient lineup of weapons with a shoulder rest.

 In FIG. 1 shows a General view of the submachine gun Bogomazov (PPB).

 In FIG. 2 mechanism for the automatic supply of cartridges from the PPB magazine (in a static state), gas pusher in the leftmost position).

 In FIG. 3 the same (gas pusher in the middle position).

 In FIG. 4 the same (gas pusher in the extreme right position).

 In FIG. 5 cartridge feed channel (in orthogonal projections and in axonometry).

 In FIG. 6 cartridge feeder (in orthogonal projections).

 In FIG. 7 cartridge pusher (in orthogonal projections and in axonometry).

 In FIG. 8 gas pusher (in orthogonal projections and in axonometry).

 In FIG. 9 booster of the cartridge (in a perspective view).

 In FIG. 10 fuse against double loading (in orthogonal projections and in axonometry).

 In FIG. 11 is a front view of the magazine, the feed channel for ammunition and the barrel of the weapon (section along AA).

 In FIG. 12 weapons shop assembly (in orthogonal projections).

 In FIG. 13 PPB with reclined shoulder rest.

 In FIG. 14 PPB with a folded shoulder rest, with an unfolded stand.

 The Bogomazov submachine gun contains a barrel 1 with a gas outlet 2, a bolt 3 placed in the bolt frame 4, a magazine 5 located in the pistol grip 6 and containing a spring-loaded pusher 7. Moreover, the magazine 5 is offset 1 / from the breech of the barrel 3 of its length (Fig. 1).

 The displacement of the magazine 5 to the middle of the weapon becomes possible thanks to the invented mechanism for the automatic supply of cartridges from the magazine (Fig. 2-4). This mechanism is made in the form of a feed channel 8, located under the barrel 1 and parallel to it. The feed channel 8 (Fig. 5) is a tube 9, in the front of which there is a vault with two spring clips 10, to the right and left, and in the back there is a false store 11 with bends 12 at the top and a window 13 from below for passage of the cartridge feed 14.

 The feeder 14 of the cartridge (Fig. 6) consists of a housing 15, in the upper part of which a tray 16 is made to hold the cartridge, and in the lower part is a through hole for the axis 17, on which the spring 18 is mounted (see Fig. 2). In the case of the feeder 15 perpendicular to the axis 17 there is a recess for abutment of the lower end of the spring 18. The upper end of it abuts against a continuous fire sear (not shown in the drawing), forcing, therefore, the feeder 14 to be inside the feed channel 8.

 The cartridge feeding mechanism further includes a pusher 19 of cartridges (FIG. 7) having longitudinal grooves 20 and movably connected by means of a pin 21, a press 22 and a spring 23 (FIG. 2) with a gas pusher 24.

 The gas pusher 24 (Fig. 8) in the upper part is movably articulated with the shutter frame 4 and is under the action of the return spring 25. In addition, at the top, in the front part, there is a gas chamber 26 with a through hole for the passage of the barrel 1.

 A longitudinal opening 27 is made in the lower front part of the gas pusher 24 for passing the cartridge pusher 19 and a small transverse hole 28 for the stud 21 of the cartridge pusher 19. In the lower part, the gas pusher 24 also contains a booster 29 of the cartridge (Fig. 9 and Fig. 2) and a protrusion-uncoupler 30 for interacting with the fuse 31 against double loading (Fig. 10) through the thrust pad 32. The fuse 31 (Fig. 10) also has transverse protrusions, front 33 and rear 34, and side inclined grooves 35. With the help of the spring 36 (Fig. 2), the fuse 31 is in a spring-loaded state.

 For firing from different positions, the PPB submachine gun is equipped with a shoulder rest 37 (Fig. 13), which consists of a stand 38, a lever 39, a device for turning the rack 40 and a device for turning the lever 41. Using these devices 40 and 41, the shoulder rest 37 can be folded down and forward without touching the magazine 5, and in one of the folded states it is the front grip handle for firing from the side (Fig. 14), and in the other folded state it is completely adjacent to the weapon body.

 At the moment of loading the weapon or when firing (Fig. 3) under pressure of part of the powder gases, the gas pusher 24 begins to retreat along the barrel 1 and advances the pusher 19 of the cartridge in the same direction until it 19 rests against the front transverse protrusion 33 of the double-charge guard 31. The pusher 19 of the cartridge will stop, and the pin 21 of the pusher 19, sliding along its longitudinal grooves 20, through the inlet 22 will compress the spring 23 of the pusher 19 of the cartridge, increasing the force on the front transverse protrusion 33 of the fuse 31.

 When the disconnector 30 of the gas pusher 24 approaches the thrust pad 32 of the fuse 31, which is in a spring-loaded state, the gas pusher 24 will push the pad 32 of the fuse 31 down, as a result of which the fuse 31 will press the spring clips on the sides of the magazine 5 through the windows 42 through the windows 42 10. The latches 10 will fix the next cartridges 43 in the magazine 5, leaving the upper cartridge 44 of the magazine 5 not pressed from below (Figs. 11 and 12). At the same time, the front 33 and rear 34 transverse protrusions of the fuse 31 will lower down, releasing the strongly spring-loaded plunger 19 of the cartridge and allowing the cartridge 44 to enter the cavity of the feed channel 8. The pusher 19 will energetically advance the first cartridge 44 from the magazine 5 to the feeder 14.

 Continuing the movement backward, the gas pusher 24 will move the booster 29 of the cartridge onto the thrust pad 32 of the fuse 31 and fix the pusher 19 of the cartridge below the gas pusher 29 relative to the gas pusher 24 (Fig. 4).

 With further movement backward, the gas pusher 24 will force the pusher 19 fixed therein to squeeze the cartridge 44 onto the tray 16 of the feeder 14, which, in turn, will lift the cartridge and rest in the bends 12 of the false store 11 (Fig. 4).

 Next, the return spring 25 will cause the gas pusher 24 to move in the opposite direction, bringing the mechanism for automatically feeding cartridges to their original state.

 The author created from a full-size Plexiglas a sample of a submachine gun under a 9 mm cartridge with locking the bore and using the energy of the powder gases discharged from the bore.

The main technical characteristics of the submachine gun Bogomazov (PPB-95)
Length with folded shoulder rest 333 mm
Length with folded shoulder rest 590 mm
Height with magazine 30 rounds 188 mm
Barrel length without muzzle brake 235 mm
Barrel length with a muzzle brake 258 mm
Sighting line 220 mm
Estimated empty weight 2.7 kg
Caliber 9 mm
The ratio of barrel length to weapon length 0.7
Type of fire: single, continuous.

 The principle of operation of automation: the removal of gases from the bore.

 Trigger trigger type.

 The barrel is locked by turning the shutter around the longitudinal axis.

Claims (2)

 1. A submachine gun comprising a barrel, a bolt, a control handle that is combined with a throat for a magazine, and a folding shoulder rest, characterized in that it is equipped with a mechanism for automatically feeding cartridges from a magazine, made in the form of a feed channel, a cartridge pusher that is movably connected with a gas pusher, a double-charge safety lock and a cartridge feeder, the magazine being offset 1/3 of the length of the barrel relative to the breech of the barrel.  2. The submachine gun according to claim 1, characterized in that the shoulder rest is made with the possibility of folding down and forward and in the folded state two positions.

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