RU2476817C1 - Method to withdraw cap from cartridge cases of small arms - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: cartridge cases free from bullets and powder are filled with the necessary amount of water, then a bushing with a piston is freely inserted, besides, on the side surface of the bushing there is at least one hole provided. When moving, the bushing reaches the inner surface of the case bottom and is tightly pressed to it, its inner volume is filled with water. In process of further movement some water from the bushing is removed via a hole. A tight volume is formed with water between the bottom of the case, the bushing wall and the piston. Further movement of the piston provides for pulling pressure sufficient for withdrawal of the cap from the case.

EFFECT: method makes it possible to dismount a cap without damage, which eliminates emission of hazardous toxic gases into atmosphere.

1 dwg

Description

The invention relates to the field of disposal of ammunition, and more particularly to a technology for dismantling small arms cartridges.

One of the technological tasks of dismantling cartridges is to remove the capsule from cartridges that are free from bullets and gunpowder.

Known methods for extracting capsules from cartridge cases of small arms, according to which the initiating composition is first pricked in the capsule with its detonation, and then the capsule is removed from the cartridge cases (copyright certificate No. 25071 of 03/01/1929 and No. 19817 of 06/09/1967 , RF patents No. 2246094 dated April 9, 2003 and No. 2318177 dated February 27, 2008). Removing the capsule from the sleeve after it is pricked leads to the release of toxic components into the atmosphere from the process gases, which must be cleaned of harmful impurities. For such work, a separate specialized room with appropriate equipment for cleaning the gases emitted into the atmosphere is required, which leads to additional costs.

Known methods for extracting capsules from cartridges of small arms by filling cartridges with technical oil (RF patent No. 1790793 from 01/23/1993) or water (RF patent No. 2422762 from 06/27/2011)

A positive solution in these methods is to remove the capsules from the liners without damaging them and releasing toxic gases. This is achieved by filling the cavity of the liners with liquid, which under pressure through the pilot holes protrudes the capsule from the liner and removes it together with the liquid into the pallet.

The disadvantage of these methods is that using them to dismantle the capsules when disposing of large quantities of cartridges of various calibers, a large amount of liquid is required. Also, the introduction of a piston in the barrel muzzle due to fluctuations in the inner diameter of the barrel and the outer diameter of the piston does not always create the tightness of the sleeve cavity and the necessary pressure inside it to remove the capsule. In addition, filling the entire liner cavity with water and creating the pressure necessary to remove the capsule can lead to deformation of the liner walls (bloating, cracks).

The objective of the proposed method for extracting the capsule from the cartridge cases of small arms is to eliminate the disadvantages of these methods and the development of acceptable for industrial use.

The technical result of the invention is to create a guaranteed smallest hermetic volume for water and reduce its consumption when removing the capsule from the sleeve, as well as the exclusion of tight centering of the piston along the inner diameter of the barrel barrel. Dismantling the capsule is carried out without destroying it while maintaining the geometric parameters of the sleeve.

This is achieved due to the fact that a sleeve with a piston is inserted into the inner cavity of the sleeve filled with water, and at least one hole is made on the side surface of the sleeve that determines the flow rate of water. When moving the piston, the required water pressure is sufficient to extract the capsule.

The invention is illustrated in the drawing, which shows the relative position of the sleeve, capsule, tool (sleeve and piston) and water.

In the drawing, the positions are indicated: 1 - sleeve; 2 - capsule; 3 - stand; 4 - sleeve; 5 - side hole in the sleeve; 6 - the piston; 7 - water; 8 - removed capsule.

The method of extracting the capsule from the cartridge cases of small arms is as follows.

The sleeve 1 with the capsule 2 located in it is fed to the stand 3. The inner cavity of the sleeve is filled with water 7 with the volume necessary for guaranteed filling of the volume in the sleeve 4 and necessary for removing the capsule from the sleeve. Then, a sleeve 4 is freely introduced into the inner cavity of the sleeve, at least one hole 5 and a piston 6 are made on its lateral surface. The lower end of the piston is placed at a certain distance from the lower end of the sleeve. Then they act on the sleeve, when moving it reaches the inner surface of the bottom of the sleeve and relies on it tightly without a gap under effort. In this case, the inner volume of the sleeve is filled with water. With further movement of the piston, part of the water from the sleeve is removed through the hole. A sealed volume of water forms between the bottom of the sleeve, the wall of the sleeve and the piston. With the subsequent movement of the piston, water is compressed and sufficient pressure is generated to remove the capsule with the initiating composition from the sleeve. The extracted water capsules 8 through a hole located in the stand are collected in a tray.

Thus, the proposed method provides the extraction of the capsule from the cartridge cases of small arms and solves the tasks, and, according to the author, meets the conditions of patentability "novelty", "inventive step" and "industrial applicability".

The method of extracting the capsule from the liners can be implemented, for example, on automatic rotor lines for mass disposal of small arms cartridges.

In addition, the conducted experimental work on the experimental unit of the production equipment confirmed the possibility of removing the capsule from the sleeve with water under pressure, as well as the implementation of this method in its industrial application.

Claims (1)

A method for extracting capsules from cartridges of small arms cartridges with water, characterized in that the inner cavity of the cartridge case is partially filled with water, a sleeve with a piston is introduced from the side of the barrel into the cavity of the cartridge case, at least one hole is made on the side surface of the sleeve, and the lower end of the piston placed at a certain distance relative to the lower end of the sleeve, which is tightly pressed to the bottom of the sleeve, form a closed volume filled with water in the sleeve, and with further movement of the piston create increased water pressure, sufficient to remove an initiating explosive capsule from the sleeve.