CS196518B1 - Pneumatic fire weapon - Google Patents

Description

The object of the invention is a pneumatic firearm with a shot energy accumulation directly into the compressed air.

The most widespread type of pneumatic firearm uses compressed springs to accumulate shot energy. During the firing, the compressed spring first acts on the piston or plunger, the movement of which, consequently, only subsequently results in the compression of the air required for the actual firing. The advantage of this pneumatic weapon system is its constant power, dependent only on the characteristics of the spring used. The disadvantage is the vibration of the weapon when fired, caused by the shock of the spring and the piston. This drawback is particularly pronounced for a pneumatic gun. Pneumatic guns called windbreakers are equipped with a pressure lcomor into which the air is compressed by an additional piston pump. This system allows to achieve considerable pressures and different powers. For safety reasons, it is forbidden to use this pneumatic weapon system everywhere. Relatively safe is another pneumatic weapon system, which uses as compressed energy the air compressed in suitable pressure vessels attached to the weapon. Nowadays, cartridges filled with carbon dioxide are used for this purpose. The filling of one such cartridge is enough to provide several shots. Dosing the pressure before emptying the cartridge causes an uneven decrease in performance. The downside is the need for full bomblček.

These disadvantages are overcome by the pneumatic firearm according to the invention in which it is

196 518

19β SIS firing energy accumulated directly in the air, compressed in the pressure chamber, formed by the piston and the pressure chamber body, the essence of which is that between the pressure chamber and the bore of the barrel is provided by a relief valve controlled by the trigger mechanism.

The pneumatic firearm according to the invention can be designed such that the relief valve is provided on the barrel and forms a piston slidably mounted in the pressure chamber.

The principle of the invention will be retained if the overflow valve is provided on the barrel forming the piston on which the body of the pressure chamber is slidably mounted.

The advantage of the pneumatic weapon arrangement according to the invention is, in particular, its simple construction, which makes it impossible to increase the firing energy above the required piston even during repeated compression of the piston. This ensures a constant performance of the weapon. The firing does not cause the weapon to flicker, which significantly increases the accuracy of shooting. There is no need for additional pumps or gas-filled cartridges. The weapon is safe.

The drawing shows in principle an example of the construction of a pneumatic gun according to the invention.

The barrel 2 is provided in the pressure chamber 11, provided with a seal 21 and a pawl 22. The conclusion of the pressure chamber 11 is an overflow valve J controlled by a trigger mechanism 6. In particular, the trigger mechanism 4 comprises a trigger 41 itself with a tooth 411 engaging an arm 421 of a rod 42 eccentrically mounted in the barrel 2 and connected to a transfer valve J. The trigger mechanism 6 is housed in the gun body 1. A charging opening 23 is provided in the barrel 2. The latch 22 is pressed into engagement by a spring 211.

The function of the pneumatic gun results from the construction assembly. By pressing the latch 22 against the pressure of the spring 211, the barrel 2 is released, thereby allowing it to slide out of the pressure chamber 11.

In this position the weapon can be loaded. Since in the example shown the barrel 2 simultaneously functions as a piston, when it is moved out of the pressure chamber 11, air is sucked downstream of the relief valve. By reversing the barrel 6, the air is then compressed. The squeezing movement ends in the locking position in which the barrel 2 automatically locks the barrel 2 by the pressure of the spring 211 on the pawl 22. This makes the gun ready to fire. The actuation of the trigger 41 is transferred by means of the rod 42 to the relief valve J, which opens when fired.

*

The described construction is particularly suitable for pneumatic guns. However, it can also be applied advantageously to pneumatic rifles, whereby the barrel of the rifle is not to be simultaneously a piston accumulating shot energy into the compressed air, but the pressure chamber can and the piston and bypass valve be connected to the main by a channel.

The latch 52 securing the piston in the depressed position need not be received in the piston, but can preferably be received in the pressure chamber -11. The Piet can be operated and locked in a compressed position by other known means, for example, a hinge mechanism which simultaneously allows higher air pressures to be achieved. In some cases, a fixed piston and a movable pressure chamber 11 secured in the compressed position by any of the described ways.

Claims (3)

OBJECT OF THE INVENTION A pneumatic firearm with accumulation of firing energy into air compressed into a pressure chamber formed by a piston and a pressure chamber body, characterized in that a relief valve (3) operated by a trigger valve is provided between the pressure chamber (11) and the barrel bore (2). mechanism (4). Pneumatic firearm according to Claim 1, characterized in that the relief valve (3) is provided on the piston-forming barrel (2) displaceably mounted in the pressure chamber (11). in * Pneumatic firearm according to claim 1, characterized in that the relief valve (3) is provided on the barrel (2) forming the piston on which the body of the pressure chamber (11) is slidably mounted.