RU2197696C1 - Muzzle device of gun - Google Patents

Abstract

FIELD: manufacture of hunting guns. SUBSTANCE: muzzle device of gun includes expansion chamber with expanding and narrowing sections and outlet funnel which diameter is one caliber number greater than diameter of gun barrel and narrows towards expansion chamber which diameter is two caliber number greater than diameter of gun barrel. Space of expanding section of expansion chamber is not less than volume of shot shell in cartridge. Proposed muzzle device ensures similar parameters of shot heap for different calibers of gun barrels with maximum possible uniformity of shot shell. EFFECT: maximum possible uniformity of shot shell. 2 cl, 1 dwg

Description

 The invention relates to weapons technology and can be used in the manufacture of trunks of hunting rifles.

 The closest in technical essence - the prototype is a muzzle gun containing an expansion chamber with sections of expansion and contraction and an output bell (see the book Blum M.M., Shishkin I.B. Hunting gun: Handbook. - 3rd ed., revised and supplemented - Moscow: Ecology, 1994, p. 39, 42, Fig. 16.3).

 The known device allows for firing to get a wide shot scree with a uniform distribution of grains.

 A disadvantage of the known muzzle device is the inability to provide similar parameters of shot scree for different calibres of gun barrels. The consequence of this drawback is that if for some caliber of the barrel of the gun the dimensions of the chamber and the bell are optimal from the point of view of uniformity of the shot charge, then for the gun of another caliber of the barrel the optimality conditions will no longer be fulfilled.

 The objective of the invention is to provide similar parameters of shot scree for different calibres of gun barrels.

 The technical result is to obtain the greatest uniformity of the shot shell.

 To solve the problem of the invention, in a known muzzle device of a gun containing an expansion chamber with expansion and contraction portions and an outlet bell, the latter is made with a diameter of one caliber number larger than the diameter of the barrel of the gun, with a choke narrowing towards the expansion chamber, the diameter of which is two caliber numbers more than the diameter of the bore, and the volume of the expansion section of the expansion chamber is not less than the volume of the shot shell in the cartridge.

Moreover:
- the muzzle device is removable and mounted on the barrel using a threaded connection,
- areas of expansion and contraction of the expansion chamber are made conical.

 The invention is illustrated using the drawing, which shows a section of a muzzle device.

 The muzzle device includes an expansion chamber 1 with expansion sections 2 and a restriction 3 and an outlet bell 4, which is made with a diameter one caliber larger than the diameter of the barrel 5 of the gun, with a choke 6 towards the expansion chamber 1, the diameter of which is two more caliber numbers the diameter of the barrel bore 5, and the volume of the expansion section of the chamber 1 is not less than the volume of the shot projectile in the cartridge.

 The muzzle device is removable and secured to the barrel 5 using a threaded connection 7. The expansion portions 2 and the constriction 3 are made conical.

 The muzzle device operates as follows.

 A shot shell from the bore 5 passes into the chamber 1, the diameter of which is two calibers larger, and under the wedging effect tends to occupy this space.

 The shotguns are pressed against the walls of chamber 1, the powder wad is unable to block the trunk sectional area increased by two calibers, passes the powder gases into the shot shell and mixes with the shotguns.

 Then the shot shell, after passing a short narrowing, is somewhat elongated along the length and goes into a conical extension, increasing the diameter by one caliber number. As a result of the movement of the shot projectile through the device, a large scatter of grains is formed in a circle with some extraction of the shot sheaf along the flight direction.

 The connection between changes in the diameters of the expansion chamber and the bell with calibers, determined experimentally, contributes to the harmonious movement of grains during the formation of a shot projectile.

 The proposed device provides similar parameters of shot scree for different calibers of gun barrels with maximum uniformity of shot shell.

Claims (3)

 1. The muzzle device of the gun, including an expansion chamber with sections of expansion and contraction and an output bell, characterized in that the output bell is made with a diameter of one caliber number larger than the diameter of the barrel of the gun, with a choke narrowing towards the expansion chamber, the diameter of which is two numbers the caliber is larger than the diameter of the bore, and the volume of the expansion section of the expansion chamber is not less than the volume of the shot shell in the cartridge.  2. The muzzle device according to claim 1, characterized in that the muzzle device is removable and mounted on the barrel using a threaded connection.  3. The muzzle device according to claim 1 or 2, characterized in that the expansion and narrowing sections of the expansion chamber are conical.