RU2439471C2 - Shot charger for smooth-bore hunting weapons "smit tandem" - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: shot charger comprises a wad container made in the form of a sleeve. The wad container has a chamber for shot, a side wall, a bottom and a sealing collar. In the side wall of the wad container there are four through slots forming tabs so that surfaces of adjacent tabs contact in slots. Planes of adjacent slots are at the angle of 90° relative to each other. The collar has two sections with various thickness of its wall. The section at the end of the collar is made with smaller thickness than a subsequent section arranged closer to the head part of the shell. On the outer surface of the collar there is a circular ledge to remove powder and a ledge for air bleeding. The ledge for air bleeding is arranged at the end of the collar and has higher height compared to height of the circular ledge.

EFFECT: improved ballistic characteristics.

2 cl, 4 dwg

Description

The invention relates to ammunition for hunting, which are used for firing smooth-bore guns.

A wad container is known comprising a body made in the form of a glass having a shotgun shell, a side wall and a bottom and provided with an obturating cuff, while in the side wall of the body parallel to its longitudinal axis there are four through slots forming petals in contact with each other the specified slots when installing the wad-container in the cartridge sleeve (RU 2096731, publ. 1997).

A disadvantage of the known design is the insufficiently reliable protection of the barrel of the gun from contact with a shot charge due to the execution of slots at a non-optimal angle relative to each other.

The closest in technical essence and the achieved effect is a shotgun shell containing a wad container containing a shotgun shell, side wall and bottom and equipped with an obturating cuff, while four through-cuts are made in the side wall of the body parallel to its longitudinal axis, forming petals with the possibility of contacting the surfaces of adjacent petals along the indicated slots, while the planes in which adjacent slots lie are 90 ° relative to each other (see RU 69626 U1, publ. 27.12 .2007).

The disadvantages of the closest analogue are:

- insufficiently effective obturation of powder gases in the initial period of the shot at low pressures;

- instability of the mass of the powder charge, due to the possibility of passage of powder particles into the gap between the bullet and the sleeve;

- low-performance assembly of bullet cartridges on automatic lines;

- uneven scree.

The technical task of the invention is to increase the stability of the assembly of shot cartridges on automatic lines, improve ballistic characteristics, increase the damage range.

The problem is solved in that the shotgun shell for a smooth-bore hunting weapon contains a wad-container (case) made in the form of a glass, having a shot chamber, a side wall and a bottom and equipped with an obturating cuff, while four are made in the side wall of the case parallel to its longitudinal axis through slots forming petals with the possibility of contacting the surfaces of adjacent petals along the specified slots, while the planes in which adjacent slots lie are at an angle of 90 ° relative to each other UGA. The cuff has at least two sections with different thicknesses of its wall, and the section at the end of the cuff is made with an average thickness less than the next section located closer to the head of the projectile, an annular protrusion is made on the outer surface of the cuff for removing gunpowder when mounting the projectile into the sleeve and the protrusion for bleeding air when mounting the projectile in the sleeve located at the end of the cuff and made higher than the height of the said annular protrusion, while on the outer surface of the wad container you olneny screw thread.

It is preferable to use steel shot, which allows to increase the likelihood of damage.

Using the proposed invention in the scope of the features of the independent claim will achieve the following technical results:

- to increase the productivity and assembly quality of shot cartridges on automatic lines due to the air bleed protrusion made at the end of the outer surface of the cuff;

- to stabilize the mass of the powder charge, excluding the passage of powder particles into the gap between the shot shell and the sleeve due to the annular protrusion on the outer surface of the cuff;

- due to the execution of the cuff with a different thickness of its wall so that the section at the end of the cuff is made with an average thickness less than the next section located closer to the head of the projectile, to save the energy of the powder gases by giving the maximum initial velocity of the projectile with a minimum weight of the powder charge ;

- to increase the dispersion of the fraction at short distances with the uniformity of its scree due to the execution on the outer surface of the housing of the helical rifling, ensuring its rotation around the axis.

The invention is illustrated using the drawings.

Figure 1 shows the appearance of the proposed projectile (side view), figure 2 shows a longitudinal section of the proposed projectile, figure 3 shows a section aa in figure 1, figure 4 shows a section bb in fig. 2.

A shotgun shell for a smoothbore hunting weapon contains a wad-container (case) 1 made of high-pressure polyethylene, in the back of which a cavity 2 is made, forming a cuff seal 3, and in the front of the case there is a cavity for shot 4.

The plastic wad container 1 is cast in multi-seat molds on injection molding machines.

The role of the shock absorber is performed by various body weakenings, made in the form of holes (s) 5 and / or recesses (s) 6 between the tail of the body with the cuff 3 and the head of the body with shot 4.

The cuff has at least two sections with different thicknesses of its walls. The conical section 7 at the end of the cuff is made with an average thickness less than the next section 8, located closer to the head of the projectile. This embodiment allows the end part 7 of the cuff to be softer compared to part 8 of the cuff and thereby provide obturation in the initial part of the shot when the pressure of the powder gases on the tail of the projectile is relatively small. Section 8 has a large average wall thickness and, therefore, is more rigid and is thereby included in the “operation” at a relatively high pressure of the powder gases in the projectile space, i.e. provides effective obturation in the middle stage of projectile movement.

An annular protrusion 9 is made on the outer surface of the cuff 3 for removing gunpowder when mounting the projectile into the sleeve and a protrusion 10 for bleeding air when mounting the projectile in the sleeve located at the end of the cuff 3, i.e. on the soft part 7. The height of the protrusion 10 should be greater than the height of the protrusion 9.

On the outer surface of the body along the entire length of its cylindrical surface, 12 helical longitudinal grooves 11 were made, allowing the projectile to rotate in flight around its axis, increasing the damage range and increasing the dispersion of the shot at short distances with uniform scree.

Four through slots 12 are made in the side wall of the wad container parallel to its longitudinal axis, forming petals with the possibility of contacting the surfaces of adjacent petals along these slots. The planes in which adjacent slots lie are located at an angle of 90 ° relative to each other.

The combination of inclined rifling and a certain length of the slots allows you to adjust the effective distance of hitting the target with the desired accuracy and uniform scattering.

The work of the proposed projectile is as follows. The powder gases formed during firing pass into the cavity 2 of the shell body 1, exerting pressure on the cuff 3. Even with a small pressure of the powder gases, the soft part 7 of the cuff is pressed against the surface of the barrel channel, providing a reliable obstruction of the powder gases. With increasing pressure, a stiffer part 8 is gradually included in the work, which provides a reliable seal at high pressures. After exiting the barrel at a certain distance, the petals open through the slots 12 and disperse the fraction 4. Due to the rotation of the projectile, a uniform axis of the fraction is achieved.

Claims (2)

1. A shotgun shell for a smooth-bore hunting weapon, comprising a wad-container made in the form of a glass, having a shot chamber, a side wall and a bottom and provided with an obturating cuff, while four through-cuts are made in the side wall of the wad container parallel to its longitudinal axis, forming the petals with the possibility of contacting the surfaces of adjacent petals along the specified slots, while the planes in which adjacent slots lie are 90 ° relative to each other, characterized in that the cuff has at least two sections with different thicknesses of its wall, and the section at the end of the cuff is made with an average thickness less than the next section located closer to the head of the projectile, an annular protrusion for removing gunpowder is made on the outer surface of the cuff the projectile into the sleeve and the protrusion for bleeding air when mounting the projectile in the sleeve located at the end of the cuff and made a height greater than the height of the said annular protrusion, while on the outer surface of the wad container screw thread. 2. A shot shell according to claim 1, characterized in that the shot is made of steel.

Images