FI111190B - Auxiliary device for shotguns - Google Patents

Description

5, 111190

SLEEPER ACCESSORY

The present invention relates to a shotgun accessory which is removably attached to a shotgun barrel.

A shotgun is a gun that is used mainly in sport shooting and hunting. The use of shotgun for hunting is very versatile, although limited by the power and range of the shotgun.

10

Known shotguns and cartridges do not achieve optimal firing of the cartridge charge in the cartridge because the barrel of the shotgun is relatively short. When optimal combustion is not achieved, the speed and energy of the shots are not as good as they could be. These points are accentuated by the magnum cartridges, which have had to slow down their powder loading due to the increased search load. Incomplete combustion is manifested in the shotgun barrel as non-flammable gunpowder and the resulting additional dirt, as well as in known effective effective range. With the advent of alternative shot material on the market, the problem of effective range has increased, due to the low specific gravity of alternative shot material as compared to lead shot.

25 The most common shotgun used in hunting is equipped with a 28-36 inch barrel. In the past, much longer barreled shotguns have been used, but they are difficult to transport and handle.

30 Shotgun power is generally sought to be increased by magnum cartridges, by increasing the size of the shotgun, by changing gun loading and gun caliber, and by various reductions in the shotgun barrel, but has not succeeded in significantly increasing the effective range. Increasing the barrel size of the shotgun has been limited due to its portability and reduced availability.

2 111190

It is an object of the invention to eliminate these drawbacks and to provide an accessory for a shotgun which ensures optimal firing of the gun and significantly increases the effective firing range while maintaining a good hit pattern, thus increasing the use of the shotgun and not affecting its portability.

These objects may be achieved by a shotgun accessory device according to the invention, which is characterized by what is claimed in the claims.

The shotgun accessory according to the invention is an additional barrel having a length such that effective firing of the shotgun in the barrel is achieved. When using a removable power barrel in the shotgun, which is long enough in combination with the actual barrel to provide optimum combustion of the cartridge charge, the maximum firing load output and energy content is achieved. This allows the shotgun to fly considerably far and in a good 20 formation, whereby the shot pattern is good when fired over a relatively long distance. The additional silicon of the invention provides a significantly longer effective range and an increase in the versatility of the shotgun. Such an additional barrel is lightweight and durable in structure.

The additional barrel is easily transportable with the shotgun and can be easily attached to the actual barrel before firing and, accordingly, easily removed after use.

The length of auxiliary barrels according to the invention may vary in different applications depending on the length of the barrel in the shotgun, the firing load of the cartridge used, and the powder load. The additional barrel may be as long as or more than the barrel of the shotgun itself, with the available barrel being twice to 35 times or more than twice the length of the barrel previously used. The aim is to achieve optimum combustion and maximum output speed as well as maximum power and 3111190 accuracy. With small shotguns and fast shotgun shots, the purpose is achieved with shorter additional barrels. The length of the additional barrel varies in different applications and is preferably at least about 30 cm, but generally the length 5 is more than 40 cm, such as 50 cm, 60 cm, or more or some measure between them.

In a preferred embodiment of the invention, the front end of the auxiliary barrel has a full-finned contraction. The full-finned contraction member forms only a part of the structure of the additional chimney, but provides the same advantages as known reducers.

Preferably, the additional barrel according to the invention further has a gently sloping overhead cone extending from the rear end 15 of the additional barrel to the front end. The exceptional length and fineness of the transition cone located before the actual contraction portion achieves less deformation of the shots before the actual contraction portion and a calmer detachment from the barrel, resulting in a better flight path for the shots and a more accurate 20 hit pattern when firing long distances.

The invention will now be described in more detail with reference to the accompanying drawing, in which Figure 1 shows an additional shotgun according to the invention; 25 pips in partial sectional side view, and Figure 2 is a front view of the additional barrel of Figure 1.

The accessory body of the invention, the power barrel body 6 30, is formed by an additional shotgun barrel made of a material of sufficient quality to withstand the pressure and external stresses thereon. At the front end of the barrel is a full-finned shrink member 1. The inside of the barrel has a very gently sloping overhead cone 2. The barrel is fastened by brazing 3 or the like 35 to the fastening part 7. The mounting portion 7 and the actual barrel of the shotgun have threads 4111190 for rotating the power barrel as an extension of the shotgun barrel 5. These threads are shotgun specific. Other known fastening mechanisms may also be used in various embodiments of the invention.

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Within the scope of the invention, solutions other than those described above may be contemplated. The fastening part 7 may be provided, for example, with internal threads and may be removably attached to an additional barrel, or it may be integral with the body 10 6. Depending on the intended use, the contraction part may also be different e.g.

15 20 25 30 35

Claims (3)

5, 111190 1. A detachable attachment to the shotgun barrel consisting of: - a frame tube (6) and a 5 securing part (7) with a clamping part (4) and threads (5) in the frame tube for attaching the shotgun to the shotgun The barrel is characterized in that the accessory is a removable attachment barrel (6) extending from the shotgun barrel, which provides an additional fire space. Auxiliary device according to claim 1, characterized in that the overhead cone (2) in the additional barrel (6) is very gently sloping as the diameter decreases, extending from the fastening portion (3) to the shrinkage portion (1) reducing the collision angle of the shot load. Auxiliary device according to claim 1 or 2, characterized in that optimum combustion is achieved in the combination by structurally altering the ratio of the partial volumes of the additional barrel 20, while maintaining the constant volume of the reduction section (1), overhang cone (2) and fastening section (3). 111190 b