DE1213303B - Locking and safety device for a piston that can be folded forward along the outside of a handgun - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. α .:

Number:
File number:
Registration date:
Display day:

F07b

German class: 72 a - 30

1213 303
F36799Ic / 72a
May 14, 1962
March 24, 1966

The invention relates to a locking and securing device for a forward along the outside of a handgun folding butt that has a vertical pivot axis and two Comprises laterally offset support surfaces relative to the pivot axis, one of which is at the front End of the piston and the other is formed at the rear end of the weapon and both support surfaces in the The interaction with the pivot axis creates a rigid connection between the weapon and the piston, when the piston is pivoted into its position extending the weapon.

It is well known, the butt of a fully automatic and semi-automatic handgun to be arranged foldable along the outside of the weapon, which considerably reduces its length will. This makes the weapon suitable for transport and for carrying over densely vegetated areas Bottom more manageable. With such a construction however, it required that the piston in its deployed position on the other part of the weapon in can be attached in such a way that a completely rigid unit is obtained. The so far known locking devices, which meet this requirement satisfactorily, are usually complicated and awkward to use. In addition, a complete, separate arrangement was made used by the other locking device when the piston is in its position in which it is forward is turned down, has been fastened. This makes production more expensive. There are also several Handles required to move the butt of the weapon from one position to the other position bring to.

There are also known submachine guns whose pistons have a dowel pin in addition to the pivot axis owns or the support causes the locking by means of a spring catch. If this fastening or Locking type of the inserted piston as well If a rigid piston attachment is guaranteed, these locks are subject to repeated actuation loosening and relatively rapid wear.

In another known handgun, the piston is inserted according to the principle of the wedge effect, a hinge means having a substantially vertical axis with a vertical one Support surface cooperates on the rear part of the weapon or on the front part of the rifle butt. The entire rifle butt can be moved to the joint axis. This loosening of the rigid connection by moving the piston in relation to the

Locking and securing device for a forward along the outside of a handgun reversible piston

Applicant:

Försvarets fabriksstyrelse, Stockhohn

Representative:

Dr.-Ing. J. Schmidt, patent attorney,

Munich 2, Hermann-Sack-Str. 2

Named as inventor:

Eric Wallberg, Vällingby (Sweden)

Claimed priority:

Sweden May 25, 1961 (5448)

Weapon leads to a relatively rapid wear and tear in the inevitable frequent actuation Loosening of the connection mechanism because the support surfaces bear the full shot load.

The object of the invention is to eliminate this disadvantage. This object is achieved in that, according to the invention, the piston contains a locking cylinder which can be moved forward in the longitudinal direction of the piston by means of a bracket, the head part of the locking cylinder being provided with an inclined surface which forms the support surface of the piston and a similar one Inclined surface cooperates on a pin or approach on the rear part of the weapon, the cooperating inclined surfaces are arranged so that they are approximately in the middle of the weapon behind the laterally offset pivot axis and transversely to the pivot axis have a length of at least one third of the distance from the pivot axis and one Include an angle of about 8 to 15 ° with the axis of the weapon.
The locking and securing device according to the invention is a simple and robust device that does not loosen or wear out even with very frequent use, since the locking cylinder is mounted on the rifle butt so that it can be moved in its longitudinal direction. The moment the hand grasps the handle, it is supported against a fixed part of the rifle butt, so that after a very small sideways movement of the rifle butt

609 539/10

an unnecessary grip on the bracket has no harmful consequences. Another advantage of the invention The locking and safety device consists in the fact that the adjacent parts of the weapon or of the rifle butts do not essentially overlap, which makes it possible to the piston is shorter and therefore easier to carry out. Finally, it also avoids the underside the weapon is claimed, whereby a free position of the trigger device, the handle etc. is difficult.

The locking device according to the invention allows both the attachment of the piston in his after forward position by a hook as well as its turning backwards, whereby the front end of the piston with the rear end of the other part of the weapon in known per se Way is connected by means of a joint or hinge.

It is particularly useful that the locking cylinder backwards in the longitudinal direction of the piston moved by means of an actuating arm and easily reached from the outside of the piston can. It is pulled forward against the inclined surface by means of a spring.

The invention will now be described with reference to the drawing. It shows

Fig. 1 is a longitudinal section through the rear part of a handgun with the pivoted outward and locked pistons and

F i g. 2 shows a side view of this.

The rear part of the gun is made with one a steel tube existing piston 8 connected by means of a joint, which consists of a pivot axis 2 and there are two bearing eyes 3 which are fastened to the piston 8 by means of a connecting housing 6. The rear end of the piston 8 is on its inside with a thread 16 for the attachment of a Buffer carrier provided. Within the piston 8, a locking cylinder 9 is slidably arranged, the head part of which 7 and its end part 10 are shaped according to a precise guide. The rear end part 10 of the locking cylinder is fastened to the bracket 13 by means of a screw connection 11. A cylindrical one Part of the bracket is slidably disposed in a guide 22, while a hook 14 through a Slot or gap 15 ία of the guide 22 or in the wall of the piston 8 protrudes. To the cylindrical Part of the bracket 13 is a spring 12 for the forward movement of the locking cylinder. The head part 7 of the locking cylinder has an inclined surface 21 at its front end 20. The inclined surface 21 forms the support surface which faces the pivot axis and forms an angle with the axis the handgun from about 10 °.

At the rear end of the weapon 1, a pin or projection 17 is attached and with one of the inclined surface of the head 7 provided corresponding inclined surface. The two inclined surfaces 21 are shaped so that only a small distance between the end surface 19 of the head part 7 and the bottom surface 18 of the pin 17 as well as between the end surface 4 of the pin 17 and the bottom surface 5 of the head part 7. This blocking is still there effective when the surfaces in question have worn down to a certain extent. the end the drawing it can be seen that the inclined surfaces 21 are attached behind the pivot axis 2 and a. Include an angle of about 8 to 15 ° with the axis of the weapon. In this way the required Resistance to the solution of the lock despite a moderate length of the joint Contact surface reached without a particularly strong drive spring 12 is required. The length, the contact surface will be about two fifths, but at least one third of the distance from theirs front part matched to .the joint axis.

ίο In the carrying position, the piston 8 is forward, folded sideways along the weapon, the hook 14 of the clamping bracket 13 in one on the weapon or the holding device attached to the barrel engages. To get the gun ready to fire the handle is released by pulling back the bracket. The piston is folded outwards, by folding the clamping bracket backwards until the connection housing 6 comes into contact comes with the approach 17, whereby the bracket in

ao its right location comes. The head part 7 of the locking cylinder 9 is then brought into engagement with the projection 17 and held by the wedge effect, since the Inclined surface 21 of the wedge against the inclined surface of the projection 17 and the head part 7 of the locking cylinder presses against the inside of the piston 8 on the opposite side.

The ends 20 of the head part 7 and the approach 17 are rounded or with a beveled edge on their the inclined surfaces 21 provided sides facing away.

As a result, the piston can easily be swiveled out even against the force of the drive spring 12. The invention is not limited to the embodiment shown. For example, it is not necessary that the outer shape of the piston 8 is tubular and that this with an end plate as Buffer carrier is provided. The tubular part can, for. B. fixed in a wooden or plastic piston be. In the side elevation of the drawing, the tube forms the upper part of a yoke, the other part of which is on is attached to the front end of the tube as well as to its rear end,

Claims (6)

Patent claims: 1. Locking and locking device for a forward along the outside of a handgun reversible piston that has a vertical pivot axis and two against the pivot axis laterally offset support surfaces includes, of which • the one at the front end of the piston and the other is formed at the rear end of the weapon and both support surfaces in cooperation effect with the pivot axis the rigid connection of the weapon with the piston ^ when the piston is pivoted into its position extending the weapon, characterized in that that the piston (8) contains a locking cylinder (9) which in the longitudinal direction of the piston by means a bracket (13) can be moved forward, the head part (7) of the locking cylinder (9) with an inclined surface (21) is provided which forms the support surface of the piston ί and with a similar inclined surface (21) on a pin or shoulder (17) on the rear part (1) of the weapon cooperates, wherein the cooperating inclined surfaces (21) are arranged so that they lie approximately in the middle of the weapon behind the laterally offset pivot axis (2) and transversely to the pivot axis a length of at least one third of the distance from the pivot axis and an angle of about 8 to 15 ° with the Include the axis of the weapon. 2. locking and securing device according to claim 1, characterized in that both the front end (20) of the locking cylinder (9) and that of the pin or lug (17) to the the inclined surfaces (21) facing away from the edges is rounded. 3. locking and securing device according to claim 1 and 2, characterized in that the bracket (13) for the retraction of the locking zyLinders (9) laterally through an opening (15) protrudes from the piston and with one in the folded-back transport position in a holding device the weapon engaging hook (14) is provided. Considered publications:
French Patent No. 999 680;
"Small arms of the world", 6th edition, Harrisbury, 1960, p. 508;
Factory prospectus of the company Dansk Industrie Syndikat: MadsenM53 ”, 1955. 1 sheet of drawings