RU2101661C1 - Shot cartridge - Google Patents

Abstract

FIELD: smoothbore gun fire. SUBSTANCE: one-piece cast plastic cartridge case 1 has a central hole in the bottom part. Reinforcing member 3 made in the form of a sleeve, whose height makes up part of the cartridge case bottom height, or in the form of a disk is installed in misalignment with the hole. One generating line of the inner surface of the reinforcing member comes out to the hole surface. The inside diameter of reinforcing member 3 exceeds the diameter of the central hole. EFFECT: improved design. 3 cl, 2 dwg

Description

 The invention relates to the field of hunting and can be used for shooting from smoothbore guns.

 Known shotgun cartridge for smoothbore guns, containing a molded plastic sleeve with a central hole in the bottom, a capsule, a powder charge, a gasket for gunpowder, wads, shotgun shell and plastic wad container made in the form of a glass placed in the sleeve with an open end face interference side of the wad, along the perimeter of the opposite end of which a thin-walled annular skirt is made (partially cut off), while the internal volume of the wad container container is part of the volume of the shot shell (auth. St. N 1798610, class. F 42 B 7/08, 1993).

 The disadvantage of this shot cartridge is the lack of strength due to the lack of a reinforcing element in the construction of a molded plastic sleeve.

 To increase the strength of the cartridge and the reliability of its functioning, the sleeve is made of solid plastic with an annular reinforcing element installed in the bottom of the sleeve not aligned with the capsule hole and one forming the inner surface facing the surface of the capsule hole, while the inner diameter of the reinforcing element is larger than the diameter of the capsule hole. Alternatively, the reinforcing pallet is made in the form of a thin-walled sleeve with a height that is part of the height of the bottom of the sleeve, for example, 1/2 the height of the bottom of the sleeve. Or, as an option, the reinforcing element is made in the form of a disk.

 Figure 1 presents the proposed cartridge with a reinforcing disk; figure 2 is a section aa in figure 1.

 The proposed cartridge consists of a one-piece plastic sleeve 1, a capsule 2, a reinforcing disk (sleeve) 3, a powder charge 4, a gasket for gunpowder 5, wad 6, shotgun 7, wad-container 8.

 The cartridge works as follows. After the initiation of the capsule 2 and the ignition of the powder charge 4 by the pressure of the powder gases and explosive products (EX) of the capsule, the walls of the capsule expand, which is resisted by a thin layer of plastic placed between the inner wall of the reinforcing disk (or sleeve) and the outer wall of the capsule. This ensures reliable sealing of the capsule socket without changing its size, since the plastic pinched in a small volume behaves like an incompressible liquid and allows the plastic sleeve to be reused.

 The manufacture of cartridges for such cartridges is possible on horizontal injection molding machines. At the same time, there is no need to use special devices in the molds that ensure the coaxial arrangement of the disks (bushings) relative to the capsule hole when casting sleeves. This greatly facilitates the manufacture of sleeves, as it is enough to put on reinforcing disks (bushings) on the signs of the mold, which form the capsule nests.

 Using this technology, 12-gauge liners were made of low-pressure polyethylene reinforced with steel disks with dimensions: outer diameter 15 mm, inner diameter 7 mm and thickness 6 mm. Also made were plastic wad containers with an internal cup volume of 80% of the volume of the shot charge weighing 32 g from the N 3 fraction.

 Cartridges with these components were equipped according to the drawings.

 The results of the firing of cartridges showed compliance with their requirements for hunting cartridges and the possibility of reuse of solid cast reinforced cartridges.

Claims (3)

 1. A shotgun cartridge for smoothbore guns, containing a sleeve with a central hole in the bottom, a capsule, a powder charge, a gasket for gunpowder, wads, shotguns and a plastic wad-container in the form of a glass placed with an open fit on the wad side, while on the opposite end of the glass, a thin-walled annular partially cut skirt is made, and the internal volume is part of the volume of the shot projectile, characterized in that the sleeve is made of solid plastic with an annular reinforcing element, tanovlenii misalignment in the bottom of the liner with one primer opening and forming an inner surface, leaving the surface of the primer opening, wherein the inner diameter of the reinforcing element is greater than the diameter of the primer opening.  2. The cartridge according to claim 1, characterized in that the reinforcing element is made in the form of a thin-walled sleeve with a height that is part of the height of the bottom of the sleeve, for example 1/2 the height of the bottom of the sleeve.  3. The cartridge according to claim 1, characterized in that the reinforcing element is made in the form of a disk.

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