DE1034071B - Movable lock with additional mass for automatic carbines or other weapons - Google Patents

Description

GERMAN

At present, the movable locks of automatic carabiners are designed so that they Cartridges with a specific charge. After the shooting, these closures must, which one have precisely defined inertia, normally run backwards under the pressure of the gases.

When using cartridges with a stronger charge, the pressure of the gases increases, which entails. that the movable shutter runs back faster. But part of it goes The pressure of the gases on the projectile is lost, and flames can be seen emerging from the muzzle.

In order to remedy these disadvantages, and to be useful in the same carbine cartridges with normal To be able to use charge and cartridges for high firing speeds has already been proposed have been to provide removable additional masses on the movable closure.

The subject of the invention differs from the known designs of this type in that the additional mass by a cylindrical at the same time to guide and support the return spring Serving part is formed, the training is made so that this part at will in a corresponding bore of the lock or the locking plug of the lock box freely inserted can be that serving to support the return spring bottom flange of this part against the The bottom of the hole in question.

In this design, the additional mass can either be used in the bore of the closure be so that it increases the mass and thus the inertia of the same, or in the bore of the stopper, so that it does not take part in the movement of closure and its indolence does not changes. In both cases, the additional mass is simply created by the pressure on its bottom flange supporting return spring held in place, so that special fastening members are unnecessary. Furthermore, in both positions of the additional mass, the guide of the return spring through the cylindrical Part of the additional mass guaranteed.

The invention is explained below by way of example with reference to the drawing.

Fig. 1 shows, on a small scale, a side view and partly in section, an automatic carabiner with movable shutter with adjustable inertia, the shutter being cocked;

Fig. 2 shows an axially sectioned side view of an automatic carabiner with a movable one Shutter adjusted for the greatest inertia;

Fig. 3 is a similar to the view of Fig. 2 movable lock with additional mass

for automatic carabiners

or other weapons

Applicant:

Gevarm, Societe Anonyme,
Saint-Etienne, Loire (France)

Representative: P. Meffert, patent attorney,
Koblenz, Kaiser-Wilhelm-Ring 27

Claimed priority:
France June 16, 19S4

Jacques Bienaime, Sain ^ Etienne, Loire (France),
has been named as the inventor

View with the movable shutter adjusted to the smallest inertia.

In the embodiment shown, the movable closure 1 is ^{drilled out at the rear at I 1 in} order to accommodate the helical spring 2 for the return of the closure 1 and possibly the spring guide 3, which at the same time forms the additional mass. In the example shown, the spring guide 3 has the shape of a cylinder which has a foot part 3 ¹ at one end; the foot part can be centered and supported either on the bottom of the bore I ¹ or on the bottom of the chamber 4 ¹ of the plug 4 screwed into the end of the lock box 5.

Fig. 2 shows the case of using a cartridge for high firing speed with a heavier charge. The inertia of the movable bolt 1 is then increased in that the additional mass 3 is inserted ^{into the bore I 1.} The foot part 3 ¹ strikes the bottom of the bore I ¹ , and the cylindrical part centers and guides the return spring 2, which is supported on the plug 4 at the rear.

Fig. 3 shows the case of using a cartridge with a normal charge, the additional mass 3 then being in the opposite position. The foot part 3 ¹

809 560/90

in this case lies against the bottom of the chamber 4 ^{1 of} the plug 4. The additional mass 3 forms a fixed stop, the cylindrical part of which centers and guides the return spring 2. This changeover can be carried out quickly and easily, since it is sufficient to unscrew the plug 4, pull out the spring 2 and then reverse the position of the additional mass 3.

As can be seen in the drawing, the movable closure 1 has a recess I ² on the outside of its lower part to enable the closure 1 to be tensioned by the head of the sear 6. This is freely pivotable on the axis 7 and has a nose 6 ^{1 at the rear} , which is supported under the nose 8 ¹ , which is formed by the front part of the trigger 8, before the launch. This arrangement allows the firing and causes the automatic tensioning of the breech block 1 when it is retracted.

Claims (1)

Claim: Movable lock with additional mass for carbines or other weapons, characterized in that the additional mass is formed by a cylindrical part (3) which simultaneously serves to guide and support the return spring (2), the design being such that this part (3 ) can be freely inserted into a corresponding hole (I ¹ or 4 ¹ ) of the lock (1) or the lock plug (4) of the lock box (5) so that the bottom flange serving to support the return spring (2) is (3 ¹ ) this part (3) lays against the bottom of the hole in question. Considered publications:
Swiss patent specifications No. 284466,247 470; British Patent No. 415,734;
U.S. Patent No. 2,425,684. 1 sheet of drawings © 809 560/90 7.58