FR2545595A1 - Extension relay for interchangeable multi-calibre barrels - Google Patents

Abstract

To be operational, the "relay" must necessarily be fastened to the end of the barrel 1 of an existing weapon of very low power. Rifle and weapons for hand use, the shooting gallery, the range and the garden. The relay 2 acts as a hammerless breech fastened to the end of the barrel of the weapon carrying the system. The energy of the projectile fired in the carrier weapon is absorbed completely by the secondary percussion mass 3 serving for the percussion of ammunitions of higher calibre and power. To obtain an acceptable recoil energy, the multiple choice of ammunition and projectiles which is envisaged is limited only by the ratio of the masses present (projectiles and propellant). The manually interchangeable secondary barrel 9 is fastened to the end of the relay by means of a locking device, either of the rotary type 7 or of the hinged-tilt type for the largest calibres. The system makes the original weapon multi-functional for hunting, sports, leisure and close-range home defence without great risk of injury.

Description

Extension relay for interchangeable multi-caliber guns.

The present invention relates to small arms, handguns, fire, gas or compressed air firing a single lead developing an energy less than or equal to the 22 and 6 m / m Bosquette type.

The device according to the invention is screwed at the end of the barrel of the weapon originally intended to receive a sound moderator, such a thread can be easily produced on weapons which do not have it
The object of the invention is to use a low caliber, low performance weapon for firing a variety of ammunition of higher caliber and performance; For a low price.

A variant of a barrel chambered to receive 12-gauge cases loaded with powder, allows the shooting of foam rubber bullets, or other flexible material, in a blunderbub of large diameter; For close defense or training of pointers. See drawings plate NO 3, figures D and E.

To limit the redoul energy on small arms, the cannons firing ammunition loaded with shot will be of a caliber equal to or less than the 20 chambered at 65 m / m, 24, 28, 32, 36, non magnum, and 9 m / m smooth.

The board drawn NO 1 shows in real size the system screwed on the end of a 6 m / m smooth caliber cannon, number 1.

In 2, breech screwed onto the threaded end of the barrel 1. This breech contains a percussive mass 3, the rear is in an inclined plane so that the lead which strikes it, and the gases, are evacuated by the orifice 4.Reminder backwards by spring 6, limited to 3 m / m by screw 5 in groove.

A locking box 7, onto which the support for interchangeable barrels is screwed; A smooth 14 m / m 9 caliber barrel illustrates the assembly.

Drawing board N02, figure  locking piece. Figure B, cylinder head.

Figure C, impact mass.

Drawn plate N03 figure D, variant of part n08 in section, sheet N0 1. In this variant made to receive the blunderbuss E, a recess is directly machined in the part to receive 12-gauge cases, loaded with powder in order to propelling soft, large bullets for close-range, non-injurious defense at home.

If the operating principle of the system cannot be changed, however, any other locking system simplifying the manufacture can be envisaged. For example, tilting system with hinge and single lock,
The shooting of shot cartridges for close defense at home is envisaged with the mounting on our system, of cannons with special striping, giving a very dispersing effect to the sheaf of pellets, and this at only a few meters.

Claims (4)

-1- Relay associated with a removable barrel holder (7) and (8), the relay is screwed at the end of the barrel of a long gun or handgun, firing a low energy lead powered by air, compressed gas, or powder cartridge with power less than or equal to 22 or 6 m / m Bosquette type. The relay breech (2) contains a percussive mass (3) with an inclined rear face, which is struck by the projectile fired in the original weapon. A return spring (6) returns the striking mass to its initial position. The stop screw (5) limits the return to 3 m / m towards the rear, air, crushed lead, and gases escape through the light (4). -2- The relay as claimed in claim 1 is characterized by a fixed breech (2) secured to the barrel carrying the original weapon; Unlike other systems, it is the cylinder head housing (7) which unlocks it, manually, for chasing a cartridge, or extracting an empty case. -3- The slon relay claim 1 and devoid of dog and dog spring. Percussion energy is supplied by the carrier area, thanks to the projectile propelled by it. This projectile expelling itself and after losing its energy. -4- The relay according to claim 1 is characterized by the instantaneous interchan / geability of the different guns offered, these are neither screwed nor welded to the cylinder head housing (7); Only the barrel socket (8) is screwed onto the breech box. The blunderbuss (E) escapes this particularity, being fixed to the barrel (D) by low temperature welding, or by screwing.