DE424530C - Machine gun - Google Patents

Description

The invention is that in a known machine gun with im Lock case back and forth movable return part and buffer device of the buffer like that is attached that its longitudinal axis is transverse to the return direction, making it more compact, becomes more durable and reliable, but is cheap to manufacture.

An exemplary embodiment is shown schematically in the drawing:

Fig. Ι is a plan of the rear part of the lock case,

Fig. 2 is a rear view of the rifle,

Fig. 3 is a side view of the rear part of the rifle,

Fig. 4 is a vertical longitudinal center section through Fig. 3, close to the breech block shows the rear end of its return.

The lock case has side plates 1, one

ao cover plate 2 and base plate 3, which are all rigidly and permanently connected and a fixed one Form hollow body for receiving the lock.

At the rear, the lock case is closed by a rear plate 4 which can be displaced downwards between the plates 1 for assembling the rifle and upwards for dismantling. The plate 4 is ^{guided by ribs 40} (Fig. 1) on its sides. These ribs engage in grooves in the side panels 1. At the top, the rear panel has a protruding transverse flange (Figs. 1 and 4) which fits into a recess in the cover panel 2. The rear plate 4 is locked in its final lower position by a pawl 5 which is hinged on a transverse pin 14 and engages with its nose under the rear end of the base plate 3. A spring 5 ⁰ holds the latch usually in the locked position.

In the lock case, the breech block 6 is movable back and forth in the longitudinal direction. It is placed near its rear end on a '

stationary breech block guide 7 out. During its return movement, the locking block 6 compresses a reaction spring 8, the front end of which, not shown, transfers the spring tension to the locking block, while the rear end transfers its tension to the rear plate 4 through a guide rod 9 around which the spring is wound and ., the rear end of the spring or against the shoulder) is inserted (Figure 4) in order to trap the impact of the breech block at the end of its return travel, bears the rear plate 4 is a buffer according to the _acquisition: the invention to this end, the plate 4 has a central rear extension. which extends approximately vertically from the horizontal plane of the surface of the breech block guide to the upper edge of the rear plate 4 and thereby creates a thickening of the plate preferably extends at 90 to ^0. This chamber receives the buffer means as for the breech block to un d has an opening in its front wall near its inner end. A horizontally movable buffer block 10 protrudes slightly through the opening so that its front end can be hit by the rear end of the locking block against the end of the return flow.

The buffer block 10 has a downward projection which rests on the bottom of the buffer chamber to support the rear end of the block 10, while the front surface of this downward projection forms a stop for the forward movement of the block. The portion of the block 10 within the chamber has a rearward and downward sloping surface at the top, preferably at about 45 ^° to the direction of movement of the block. This surface touches a mating surface on the underside of a transverse displacement; Baren block 11, which fits into the chamber in the back plate and has a flat, horizontal, outward-facing surface (Fig. 4). In the chamber elastic means are arranged above the block 11, e.g. B. compressible fiber pulp disks 12, which are held between the block 11 and a screw 13 closing the outer end of the buffer chamber under some pressure which can be adjusted by the screw to adjust the buffer effect. If the closure black exceeds the position according to Fig. 4 during the return j, then 1 of its rear end hits the front surface of the buffer block 10 and drives it back. Since the rear part of the block 10 is prevented from moving downwards through the bottom of the chamber in the rear plate, its inclined surface pushes the block 11 transversely away, whereby the elastic discs 12 are compressed and the impact of the breech block is absorbed.

When the breechblock is brought to rest in this way, it is immediately under the united Action of the reaction spring 8 and the buffer moved back, the parts of which then by the elastic discs 12 in the original position to be led back.

The action of the elastic washers 12 when stopping the breech block is supported by the braking that results from the frictional engagement of the puff he blocks 10 and 11 with each other and with the ground and the rear walls of the buffer chamber results. This braking effect also makes the buffer relatively "sluggish", so that too rapid relaxation of the disks 12 or the like. when returning the buffer blocks 10 and 11 to the normal position avoided and closed violent forward hurling of the breech block or other return part is prevented.

It is not necessary that the buffer chamber be perpendicular to the path of the breech block instead, other angles are also possible.

Claims (2)

Patent claims: 1. Machine gun with back and forth movable return part and buffer device in the lock case, characterized in, that the buffer is attached in such a way that its longitudinal axis is transverse to the Reverse direction, which gives the buffer a more compact design. 2. Rifle according to claim 1, characterized in that. that from the buffer ioo chamber for transmitting the impact of the return part to the transverse suspension protrudes an organ or block (10) which has an inclined surface in contact with a counter surface on a second organ or block (11) which is at an angle is guided movable transversely to the movement direction of the first-mentioned block, and that DIE contact surfaces of the blocks are preferably _uo inclined at about 45 ⁰ to the movement direction of the return part. For this purpose ι sheet of drawings.