RU2399007C1 - Sniper repeating rifle - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: proposed rifle comprises breech frame, barrel with breech chamber and breech ring with fire thrusts. Bolt is fitted in breech frame to reciprocate therein. Spring-loaded extractor with cartridge case flange hook. Cylinder-conic part of cartridge case is arranged in barrel breech chamber while cartridge case flange seats in bolt cutout, behind the extractor hook. Distinguishing feature of this invention consists in that spring-loaded sleeve is arranged in the bolt, along its central axis. Said sleeve can contact cartridge case flange and move axially with it until cartridge case slope rests on breech chamber mating cone. Hammer front part is arranged inside aforesaid sleeve in lengthwise bore made along central axis.

EFFECT: stable position of every round that increases accuracy of hits.

2 dwg

Description

The invention relates to the field of weapons technology and can be used in sniper and sporting and hunting weapons.

A well-known store rifle of the sample 1891/1930, containing a receiver, a barrel fixed in it with a chamber and combat stops, a bolt with reciprocal combat ledges, an ejector with a hook for the cartridge case and a drummer located in the central channel. To lock the barrel, the shutter is fed with the hand forward by the handle of the shutter stem and rotates to the right. When the trunk channel is unlocked, the bolt of the shutter stem rotates to the left, while the combat protrusions of the bolt larva come out of interaction with the combat stops of the receiver. Percussion mechanism of shock type. Before firing, the cylinder-conical part of the cartridge is located in the chamber of the barrel channel, and its flange part is in the cutout of the bolt behind the ejector hook (1).

Due to the availability of tolerances for the manufacture of weapons and cartridge parts, the latter is located in the chamber and bolt with axial clearance along the slope of the liner or bolt mirror. The absence of a fixed position in the axial direction of each cartridge before a shot reduces the accuracy of fire of weapons.

The famous 7.62 mm Dragunov sniper rifle. It contains a receiver with a barrel fixed in it with a chamber made in it and combat stops, a bolt with reciprocal fighting protrusions in it with an ejector with a hook for the cartridge case and a drummer located in the central channel. The cylindrical-conical part of the cartridge case is located in the chamber of the barrel, and the flange is in the cutout of the bolt behind the ejector hook. (2).

Dragunov’s sniper magazine rifle uses sniper rifle cartridges with a more carefully selected weight of the powder charge and higher requirements for the manufacture of cartridge elements. However, this does not completely solve the issues of improving the accuracy of fire of weapons.

A common drawback of these weapons is the absence of an axially fixed position of each cartridge before firing, which reduces the accuracy of fire of weapons.

The aim of the invention is to increase the accuracy of firing a sniper magazine rifle.

This goal is achieved by the fact that in a sniper store rifle containing a receiver, a barrel with a chamber, a breech with combat stops, a bolt with reciprocal fighting protrusions, an ejector with a hook for the cartridge case and a drummer located in the central channel, a cartridge, the cylinder-conical part of which is located in the chamber , and the flange in the cutout of the shutter behind the ejector hook:

- a spring-loaded sleeve is installed in the bolt along the central axis;

- the sleeve is installed with the possibility of contact from the flange of the cartridge case sleeve and axial movement together with the cartridge until the cartridge ramp stops in the reciprocal chamber cone;

- a longitudinal channel is made in the sleeve, in which the front part of the striker is placed.

In the proposed design, each cartridge before a shot takes a clearly fixed position: the sleeve, acting on the sleeve flange, raises the cartridge in the axial direction until the sleeve slides into the cartridge return cone, thereby eliminating the axial clearance of the cartridge sleeve in the weapon before each shot, which improves accuracy firing a sniper magazine rifle.

The invention is illustrated by drawings, where

- figure 1 shows a longitudinal section of a sniper magazine rifle on the chamber, bolt and receiver;

- figure 2 shows the position of the shutter with the extractor and the sleeve before the shot;

A sniper magazine rifle contains a receiver 1. A barrel 2 with a chamber 3 is fixed therein, a breech with fighting stops 4. The bolt 5 is made with reciprocal fighting ledges 6. A spring-loaded extractor 9 with a hook 10 for the sleeve 11 is mounted on the axis 7 therein. part of the sleeve 12 is located in the chamber of the barrel, and the flange of the sleeve 13 is in the cutout of the shutter 14 behind the catch of the ejector. In the bolt along the central axis, a spring-loaded sleeve 15 is installed 16. A longitudinal channel 17 is made in the sleeve, in which the front part of the hammer 18 is located.

Before firing, the cartridge 19 is completed by the bolt 5 into the chamber 3 until the slope of the sleeve 20 stops in the reciprocal cone 21 of the chamber. The sleeve 16 under the action of the spring 15 compresses the cartridge in the axial direction, acting on the end part of the sleeve flange 13. At the same time, the shutter “Δ” remains between the extractor hook 10 and the sleeve flange for any combination of sizes (made within the tolerance) of the parts determining the position of the cartridge in chamber when fired.

After the shot, the bolt moves back, the sleeve, held by the ejector hook, runs into the reflective protrusion of the receiver 1 and is thrown out. When moving forward, the shutter sends another cartridge into the chamber of the bore, which occupies the position described above.

The present invention can be used in sniper rifles and sporting and hunting weapons, both in samples with manual reloading, and in samples with semi-automatic reloading.

Using a proposed technical solution, a sniper magazine rifle was tested with a positive result.

Information sources

1. Blagonravov A.A. The material part of small arms, Book 1, M., Oborongiz, pp. 117-127.

2.7.62 sniper rifle. Manual on a small business. Military Publishing, pp. 29-35 - prototype.

Claims (1)

A sniper magazine rifle containing a receiver, a barrel with a chamber, a breech block with fighting stops, a bolt with reciprocal fighting protrusions, an ejector with a hook for the cartridge case and a drummer located in the central channel, while it is capable of placing the cylinder-conical part of the cartridge case in the barrel chamber, and its flange - in the cutout of the shutter behind the catch of the ejector, characterized in that a spring-loaded sleeve is installed in the shutter along the central axis with the possibility of contact with the flange of the cartridge sleeve and axially the first movement along with it to the end of the slope of the sleeve into the reciprocal cone of the chamber, and in the sleeve there is a longitudinal channel in which the front part of the hammer is placed.

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