DE1205866B - Rifle, especially air rifle - Google Patents

Description

BEUTSCUES

PATENT OFFICE

EDITORIAL

German class: 72b-2

Number: 1205 866

File number: E22815Ic / 72b

Filing date: May 2, 1962

Opening day: November 25, 1965

The invention relates to a rifle, in particular an air rifle, with an ängeord between the cargo hold and a compression cylinder * - aeten valve.

: Air guns are known in which the compression cylinder, in which the air is compressed by means of a piston driven by a spring force, is connected to the hold via a check valve. According to another known aeronautical. _; rifle construction, such a valve is designed so that it is normally closed and is opened mechanically by the piston at the end of the compression process. Face amount of energy given fixed and limited by the shooter maximum reasonable compression _work: In these and other known air rifles is the applicable per shot.

The invention has set itself the task of creating a rifle of the type specified above, * which allows a variable and higher shot energy without the shooter when cocking to require excessive labor, and · in the case of the firing of an introduced into the hold Projectile is effected by compressed air. .

; The task at hand is solved in essential through the use of a "known per se Hollow projectile with a sealed stern and with a charge that was carried by the fianipressioaszylirider delivered hot compressed Air is ignited, the valve being designed so that it acts as a check valve after the charge has been ignited works. According to a further feature of the invention, the charge consists of at least one?> Nijtrocellulose flakes, which are made of highly flammable Material is surrounded. According to the invention, the valve can be an adjustable ball valve that is used in Reaching-a predetermined pressure the pressure cylinder Offner, .- · ■ -. ν - -: -. ■; - -..--:

According to the invention can-with-one and the same Rifle, depending on the type of projectile used, very different firing energies can be achieved. For example can both simple projectiles without charge in that of other air rifles-h <a? *: known way as well as projectiles, which by a correspondingly large charge a high shot energy is granted. By using an adjustable ball valve according to the invention, which opens only when a predetermined pressure is reached in the pressure cylinder, can moreover achieve a change in projectile energy even when using uncharged projectiles. Depending on, Rifle, especially air rifle

Applicant:

Engineering Developments Limited, Freiburg
(Switzerland)

Representative:

Dr.-Ing. H. Negendank, patent attorney,

Hamburg 36, Neuer Wall 41

Named as inventor: .- "-, -"

Jules-Edmond Van Langenhoven, Rogers, Ark.
(V. St. A.)

Claimed priority:

Belgium of May 3, 1961 (603313),

whether the valve is only at-höhom or already at opens at low pressure, the result is a more or less good utilization of the stored compression work. .. _-;

Further features and advantages of the invention emerge from the following description of an exemplary embodiment, which is shown in the drawing.

1 is a longitudinal section through part of a rifle according to the invention;
'Fi g. 2 is a longitudinal section through a projectile which can be used in the rifle of FIG.

The rifle shown in Fig. 1 contains as essential components a shaft 1, a barrel 6 pivotable about a pin 4, one through the Pivoting the barrel. 6 actuatable clamping device 31 for, a coil spring 33, a Compression cylinder '9, generally a piston 24 with Piston rod 36 is slidably mounted "and a" Trigger device 17, 19, 23 ". The helical spring 33 sits in a laterally slotted push tube 27. When Tensioning is carried out by a nose 29 of the tensioning device 31 the thrust tube 27 is grasped at the rear end 28 of the lateral slot and pushed backwards, until the piston rod 36 connected to the piston 24 and the push tube 27 with a rear notch 37 engages in the resilient pawl 17 of the trigger device and that between the thrust tube 26 and a fixed stop plug 34 compressed spring 33 in the tensioned state

.-: - ■> -! ■ V ₁ : - ms 509 739.14

is held. The rearward extension of the wall 3 of the compression cylinder 9 forms a likewise slotted guide tube for the push tube 27. The compression cylinder 9 is closed at the front by a core 7. In this core there is a bore 8, which is arranged obliquely here, but can also run parallel to the axis of the compression cylinder 9. The rear end 11 of the barrel 6 with an annular seal 12 represents the cargo space. The projectile, which can have the shape shown in FIG. 2, for example, is inserted into the rear end 11 of the barrel 6 when the barrel 6 is folded down. Then the barrel is folded back into the cocked position ready for firing according to FIG. 1, and the rifle can be fired by operating the trigger 21. The spring 33 relaxes and moves the thrust tube 27 and the piston 24 forward at high speed, so that the air in the compression cylinder 9 is rapidly compressed.

A projectile design preferred in the illustrated embodiment is shown in FIG. 2 shown enlarged. This caseless projectile has a head SO and an open stern 51 in which a propellant charge 52 is arranged, which here consists of two nitrocellulose sheets 52, which easily from a shell are surrounded by flammable material. The outside diameter of the bullet is at the rear end slightly enlarged in order to achieve a good seal in barrel 6. The interior space receiving the charge 52 of the stern 51 is slightly conical, so that the charge sheets are when they are inserted clamp by itself. When the bullet is inserted into barrel 6 and the rifle is ready to fire has been, the open side of the projectile is opposite the front end of the inclined Bore 8 of the core 7. When firing, the flows through the compression in the compression cylinder 9 highly heated air through the channel 8 and hits the charge 52 in the open rear 51 of the projectile. This ignites the charge, and the gases developed propel the projectile with great force through the run 6.

A spring-loaded check valve, which consists of the valve ball 39 and the valve spring 140, is arranged in the inclined bore 8 of the core 7. The ball 39 rests on a valve seat 38, which is represented by a shoulder in the bore 8. The spring 41 is supported on the valve ball 39 and on an inner shoulder 42 of a ring 43 which is screwed into an internal thread 44 at the front end of the bore 8. The ring 43 is provided with a screwdriver slot so that the tension of the valve spring 41 can be changed by screwing the ring 43 back and forth.

In the embodiment shown, the valve 38, 39 fulfills two tasks. On the one hand, as a result of the action of the biasing spring 41, it only opens the bore 8 when a predetermined pressure is reached in the compression cylinder 9, so that this pressure is suddenly applied to the cargo space and the projectile, and on the other hand it acts when projectiles are used with the charge as a non-return valve as soon as the charge has been ignited and the gas pressure developed when the charge was deflagrated has reached a certain level. Accordingly, the gases developed by the charge cannot escape backwards into the compression cylinder, and the driving force developed by the charge 52 is fully effective.

From the above description it is apparent that with the embodiment described one Gun according to the invention, depending on the type of projectile used, different sized firing energies can be used so that one and the same rifle can be used as a sporting weapon low penetration as well as a defense or combat weapon with high penetration can be used. Also by changing the amount and composition of the charge 52 the behavior of the projectile can be largely changed and adapted to the respective requirements will.

Other embodiments are possible without departing from the scope of the invention. Also are the features of the invention applicable to devices that are not weapons, for example in putty guns.

Claims (1)

Patent claims: 1. Rifle, in particular air rifle, with a between the cargo space and a compression cylinder arranged valve, characterized by the use of an on known projectile with sealing stern (51) and with a charge (52), which by the when the compression cylinder (9) is fired, hot compressed air can be ignited, wherein the valve is designed so that it acts as a check valve after the charge has been ignited. 2. Rifle according to claim 1, characterized in that the charge (52) consists of at least consists of a nitrocellulose sheet surrounded by a highly flammable material. 3. Rifle according to claim 1 or 2, characterized in that the valve is an adjustable Ball valve is that opens the pressure cylinder when a predetermined pressure is reached. Considered publications:
German Patent Nos. 376 259,407 480;
French Patent No. 918 278;
British Patent No. 571163. 1 sheet of drawings 11.65 © Biindesdruckerei Berlin