RU2168144C1 - Buttstock for fire-arms - Google Patents

Abstract

FIELD: buttstocks specially designed for reduction of recoil. SUBSTANCE: buttstock represents a body connected to the receiver accommodating a shock-absorbing device. The body is made in the form of a metal bracket reinforced by rubber. The shock-absorbing device is a springing member, whose one end is rigidly fastened in the receiver, and the other is provided with a roller engageable with the rear internal wall of the bracket. The bracket is installed in the receiver on an axle and can turn relative to it. EFFECT: enhanced efficiency of dampening of recoil force up to complete prevention of its effect on the shooter, simplified construction. 1 dwg

Description

 The invention relates to handguns, mainly to high-precision, for example, sniper weapons.

 Reduced recoil guns are known in which devices that reduce recoil when fired are located in the butt. For example, the butt device of Japanese Patent No. 56-53197 [1], where layers of a synthetic resin obtained by dispersing lead powder into a synthetic resin are mounted in the butt of a gun between the wooden sections of the butt. This device is structurally simple, it is suitable for use only in wooden butts.

 Also known butt in US patent N 4316342 [2], where the device to reduce the recoil force located in the butt, contains two elements fastened together so that they can translationally move one relative to the other in the lateral direction. In the unloaded state, the elements are combined, and under the action of the recoil force of the gun, on which the elements are rigidly fixed, they begin to resiliently resist the relative movement of the elements caused by the recoil.

 In this way, at least part of the recoil energy of the gun is absorbed.

 This device is notable for its low efficiency and rather complicated in design.

 Also known butt with a device to reduce the impact of US patent N 5031348 [3]. In the main part of the stock there is a longitudinal channel in which a damper plunger is installed, which reduces the force created by the return of the weapon. A longitudinal recess is formed above the longitudinal channel, communicating with the inside of the box. In the recess there are front and rear segments, the last of which communicates with the channel. The device includes two sliding blocks, the first of which is installed for longitudinal movement in the rear segment of the recess. The first block is connected to the plunger. The second block is installed for longitudinal sliding in the front sector of the recess. Under the influence of the recoil force, the elements of the device come into interaction and move relative to each other, thus absorbing the recoil energy.

 This technical solution has the same drawback - the device is structurally and technologically complex.

 Known butt patent GB 596628 [4], adopted as a prototype. This butt for a firearm contains a housing in the form of a bracket mounted in the receiver on the axis with the possibility of rotation. Inside the bracket there is a shock-absorbing device made in the form of a spring element. The device is rigidly fixed to the bracket and interacts with the receiver. When the recoil force is applied, the bracket moves, thus absorbing the recoil energy.

 The objective of the invention is to increase the efficiency of damping the recoil force, up to the complete elimination of its impact on the arrow, while simplifying the design.

 This problem is solved due to the fact that in the butt for a firearm, which consists of a housing connected to the receiver, inside which a shock-absorbing device is installed, it is new that the housing is made in the form of a metal bracket reinforced with rubber. The shock-absorbing device is a spring element, one end of which is rigidly fixed in the receiver, and the other is equipped with a roller interacting with the rear inner wall of the bracket. The bracket is mounted in the receiver on the axis and has the ability to rotate relative to it.

 The invention is illustrated in the drawing, which shows the butt for a firearm in section.

 The stock consists of a stock body and a shock absorber placed therein. The case is a metal bracket 1, reinforced with a layer of rubber 2. In the upper part of the bracket there is an eye with a hole for the axis 3 for fixing the butt on the shank of the receiver 4. A spring element 5 with a roller 6 is firmly fixed to the receiver 4, for example, with rivets and an axis 7, which is in contact with the inner surface of the bracket 1.

 The device works as follows: during a shot, the weapon rolls back. In this case, the butt rotates on the axis 3, compressing the spring 5. The roller 6 is rolled on the inner surface of the casing of the bracket 1, while the recoil energy of the weapon is absorbed, which favorably affects the shooting parameters.

 The stock of the above construction passed state tests on the OTs-O3AS sniper rifle, while the recoil force was practically not felt, and the accuracy of fire both in single and automatic shooting improved accordingly.

Sources of information
1. Japan Patent N 56-53197, M.C. F 41 C 23/00, publ. 12/17/81.

 2. US Patent No. 4316342, M.C. F 41 C 23/00, publ. 02/23/82.

 3. US Patent N 5031348, M.C. F 41 C 23/06, 23/14, publ. 07/16/91.

 4. British Patent N 596628, M.C. F 41 C 23/00, publ. 01/07/1948 - a prototype.

Claims (1)

 A stock for a firearm, comprising a housing in the form of a bracket mounted in a receiver on an axis with a possibility of rotation, inside of which there is a shock-absorbing device made in the form of a spring element, characterized in that the case is reinforced with rubber and one end of the spring element is rigidly fixed to the receiver, and the other is equipped with a roller interacting with the rear inner wall of the bracket.