RU2367875C1 - Special carbine - Google Patents

Abstract

FIELD: small arms.

SUBSTANCE: invention relates to small arms to fire both underwater and overland. Proposed carbine comprises barrel with gas chamber and breech frame with butt. It accommodates also lock frame with breech lock and counterrecoil mechanism, magazine-opening cover with handle, gas tube, trigger and feed mechanisms, feed mechanism catch and shutter. Feed mechanism catch base is made integral with aforesaid shutter to move lengthwise along flanges of breech frame receiving opening and to be locked by spring-loaded retainers in two positions. Note that that barrel length makes (55…75)d, where d is bore diametre, mm.

EFFECT: attachment of magazines with various cartridges, higher reliability.

2 cl, 4 dwg

Description

The invention relates to weapons, which, along with the ability to quickly attach stores with different types of cartridges, makes it universal, allowing firing on land and in water with cartridges appropriate to these environments.

Samples of automatic weapons are known, for example, a 5.66-mm automatic submarine special APS (patent RU 2088880 C1 of August 27, 1997). The assault rifle is made in the form of a weapon containing a smooth (not rifled) barrel with a gas chamber, a receiver, with a shutter frame enclosed in it with a shutter, a trigger mechanism and a cartridge cutter.

The principle of operation of automation is based on the use of energy of powder gases discharged from the bore and acting on the bolt frame with the shutter through the gas piston.

Effective firing from a machine gun is possible only under water with special MPS cartridges from a special store.

Aiming weapons at the target and firing control is carried out using only two hands.

Also known is a single two-medium machine with combined power supply (patent RU 2176772 C2 from 05/11/1999). The design of this machine contains a rifled barrel with a gas chamber, a receiver with a slide frame and a shutter, a trigger mechanism and a cartridge cutter. When firing a machine gun on land, the usual 5.45 mm machine guns of the 7N6 type are used, and when shooting in water, special underwater cartridges of the MPS type are used. To ensure the attachment of magazines with different types of cartridges to the machine, the base of the magazine latch has the ability to move along the receiver window. To this end, lateral bends are made at the base of the latch, forming, together with additional plates, also fastened to the bends of the base of the latch, guide grooves, which include the bends of the receiver.

In addition, a spring-loaded curtain is pivotally attached to the axis on the receiver, which in the closed position is the rear stop of the base of the magazine latch in the front position.

To prevent the breakthrough of gases through the rifling of the bore, when firing under water with special cartridges like MPS, the depth of the rifling of the barrel of the machine, with a rifling pitch of 120 ... 250 mm, is not more than 1.5 ... 2% of the caliber.

The disadvantages of this product include the following.

- The need for the manufacture of special barrels with the corresponding geometrical parameters of the leading (threaded) part of the barrel channel, different from the similar parameters of barrels for traditional domestic weapons, which reduces the accuracy of shooting on land with conventional land cartridges, taking into account that during combat use shooting on land from this machine as a percentage of up to 80% compared with shooting under water.

- Arbitrary separation of the magazine with ground cartridges with a sharp shaking of the machine - the curtain, under the influence of its own mass, rotates about its axis, thereby providing arbitrary movement (offset) of the base of the magazine latch back and subsequent arbitrary loss of the magazine from the receiver's receiving window.

- The formation of the pitching of the base of the magazine latch, and, accordingly, the magazine in the longitudinal plane relative to the receiver due to impacts (sudden force impact) of the magazine with conventional land cartridges on the ground, which often takes place when preparing for shooting on land. The reason is the insufficient strength of the structural elements of the latch base and the small area of its interaction with the bends on the receiver.

There is a translator of the type of fire, providing firing as single shots, and bursts.

- When a swimmer is in the water, the layout of the machine does not allow you to control the firing from it with one hand, while releasing the other hand, for example, to adjust the position of your body in space.

The purpose of the invention is the creation of a weapon model in relation to the bullpup scheme, which ensures compliance with the requirements of the Law on Weapons (firing with single shots), as well as its reliable and safe operation and free from these drawbacks.

The problem is solved due to the fact that in the carbine containing the receiver with a butt, the cover of the receiver with a handle, a threaded barrel, a bolt carrier with a bolt, a mechanism for supplying cartridges from different magazines and a trigger, according to the invention, a threaded barrel from a standard small arms weapons (for example, from a 5.45 mm AK-74, AK-105 assault rifle or 5.56 mm Colt M16 A1 automatic rifle) with a length of (55 ... 75) d, where d is the caliber of the barrel, and to ensure the connection of stores with different types of cartridges the power mechanism in it is complete in the form of the base of the magazine latch combined with the shutter having longitudinal side grooves, which include the bends of the receiver’s receiving window, providing direction of their movement, the fixation of which in the front and rear positions is carried out automatically by spring-loaded clamps mounted on the axes in the side windows the walls of the front of the base of the latch.

In addition, for the possibility of joining the weapons of existing stores, for example, a store for 5.45 × 39 hunting land cartridges (the store is similar to the store of a Kalashnikov assault rifle) and a store for 5.45 × 39 sports underwater cartridges (the store is similar to the store of an APS assault rifle) having different geometric dimensions of the support protrusions and their location, without finalizing the magazines, on the front surface of the upper shoulder of the latch there is an overlay (in the form of a plate - 18, Fig. 3 extension I), forming an additional tooth for fixing, in particular, m Gazin with conventional ground ammunition. In this case, the lower arm of the latch, with respect to the upper arm, is located at a certain angle, in order to increase the angle of rotation of the latch when separating the magazines and to prevent the support protrusion of the magazine from engaging with special underwater cartridges for an additional tooth formed by the plate during its separation.

Reducing the trigger mechanism of a carbine located in the rear of the receiver with the trigger located in conjunction with the handle in front of the store, into one mechanism is carried out by means of a pusher and traction with a L-shaped lever.

Figure 1 shows a General view of a carbine with a magazine for special underwater cartridges - for the case of shooting under water; figure 2 is a General view of a carbine with a magazine for land cartridges - for the case of shooting on land; figure 3 - power mechanism with a magazine latch and latches; figure 4 schematically shows the position of the parts of the trigger mechanism.

The carbine consists of a receiver 1 with a butt 2, a receiver cover 3 with a handle 4, a barrel 5, a power supply base 6 with a magazine latch 7 and two spring-loaded clips 8, a pistol grip 9. The trigger consists of a trigger 10, a pusher 11, traction with a lever 12, a trigger lever 13 with a disconnector 14, a whisper 15, a spring whisper 16 and a fuse 17.

The proposed device operates as follows. Before firing under water, a magazine with special underwater cartridges joins the carbine. If at this moment the base of the power mechanism was in the extreme forward position, then it is necessary to simultaneously press both latches and move the base to the extreme rear position. Then the store joins. When the magazine is attached, when its neck enters the neck of the base of the latch, the store with its lateral edges acts on the rear surfaces of the latches, thereby preventing arbitrary movement of the base of the latch forward. Moving the base of the latch is only possible when the magazine is disconnected from the carabiner. Next, the bolt frame with the bolt is retracted, the weapon is aimed at the target and a shot is fired.

When entering land, a store with land cartridges, respectively, joins the store. To do this, by pressing the latch, the magazine intended for underwater cartridges is separated, the base of the latch moves forward to the stop and the corresponding magazine is attached. When moving the base of the latch to the extreme front (rear) position and upon termination of the action on the latches, they turn under the action of the springs and go with their upper shoulders into the cutouts on the bends of the receiver window of the receiver, thereby fixing the base of the power mechanism.

When firing a shot, the force from the trigger through the pusher and the traction with the lever is transmitted to the trigger lever, which subsequently transmits the movement through the spring-loaded disconnector to the front shoulder whispered. If at this moment the cutout on the axis of the fuse was in the direction of the sear, then the last (whisper) has the ability to move down and ensure that the bolt frame is removed from the battle platoon of the sear, that is, to ensure the production of a single shot. If the fuse is rotated 90 °, the cutout on the axis will shift and the sear will not be able to move, that is, the weapon will be put on the fuse.

A comprehensive check of such weapons showed the possibility of a quick change of magazines with different types of cartridges, as well as their reliable fastening, which makes this type of weapon not only reliable in operation, but also safe.

Claims (2)

1. A carbine containing a barrel with a gas chamber, a receiver with a butt and a slide frame with a shutter and a return mechanism located therein, a receiver cover with a handle, a gas pipe, a trigger and a power mechanism, a power mechanism latch and a shutter, characterized in that the base of the latch of the power mechanism is made in one piece with the shutter with the ability to move in the longitudinal direction along the bends of the receiver window of the receiver and automatically lock the spring-loaded clamps in two positions x for joining stores with different types of ammunition and locking under the influence of the stores arbitrary displacement and the stem is formed of equal length (55 ... 75) d, where d - barrel caliber mm. 2. The carbine according to claim 1, characterized in that its trigger is located in the rear of the receiver and is connected to the trigger located in conjunction with the handle in front of the store, by means of a pusher and traction, which with its L-shaped lever acts on the trigger with spring-loaded disconnector, directly interacting with the sear, and the fuse is rotary, equipped with a transverse groove and provides firing only with single shots.

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