DE2241172A1 - LOCKING DEVICE FOR CONNECTING THE STOCK TO THE BARREL OF A FIRE ARM - Google Patents

Description

DlpW.g. H. M. TSCHERUCH Dipl.-Ing. K. GUNSCHMANN

Dr. rer. near W. KORBER Dipl.-Ing. J. SCHMIDT-EVERS _{22 # August} 3,972

PATENT LAWYERS

G / Ne

HEiIINGTON ARMS GOlIPANX, ING.

9 59 Barnum Avenue

Bridgeporb, Connecticut / V. St. A.

Patent application

Locking device for connecting the stock to the barrel of a firearm

The invention relates to a locking device for releasably connecting the front end of the shaft with the barrel of a firearm, especially a locking device of this type, which is provided with a spring-loaded sliding bolt.

Locking device with spring-loaded sliding latch are z. By U.S. Patents 210,523,235,881 and 706 231 known. Use these known devices the slide latch as a means for bringing about a snap action on the front shaft end, d. H. one Effect in which the shaft is similar to a spring-loaded valve Release pin snaps into a locking position.

Such a snap action is desirable as a means of quickly removing the leading end.

309010/0 20 3

The locking device according to the invention is different However, it differs from the known devices in different ways.

(A) The invention provides a new slide bar with an actuator used to move the bolt forms a uniform workpiece. Uie by the US patents 210 525 and 235 881 show known devices a shaft that is physically removable from the barrel and do not have an actuator for the slide lock * Lie in US Pat. No. 706,231 uses a device designed as a pivot lever actuator, which with the Hiegel does not show a uniform piece.

(b) The latch in the locking device of the invention is secured by at least one on a rail-like locking attachment the barrel arranged inclined üampe inevitably brought into locking engagement with the barrel. These inclined ramp provides for mutual engagement of these both parts have a considerable mechanical advantage and ensure a very secure locking.

(c) If the rifle is used for a long time, the bolt becomes increasingly tighter with successive firing Brought locking engagement with the locking shoulder of the barrel because of the inertia is constantly shifted further back when firing. In the known devices loosens on the other hand, the locking engagement when a shot is fired.

(d) The unitary workpiece consisting of the bolt and its actuator is an adjustment plate with a eccentric lock nut to ensure a precise fit of the shaft "with the locking mechanism of the barrel assigned.

Ι Ί / 0 ΊΟ 3

Compared to the "known devices, the invention with a locking device of the specified type consists in that a rail-like locking projection is arranged on the barrel for engagement with the slide bolt and the slide bolt with its actuating member that can be displaced by hand or by a finger to one in the Shaft displaceable unitary workpiece is summarized, which is loaded by a connected to it, attached to the shaft spring device ± & sense of the locking engagement.

an embodiment of the invention is given below described in the drawing. In this show:

! ■ 'ig. 1 is a partial plan view of the locking device according to the invention,

Fig. 2 is a side view of Fig. 1 and

! 'ig. 3 is a perspective view of the locking device 1 and 2 in connection with a rail-like approach of the barrel of a rifle.

The locking device according to the invention is used to releasably connect the stock to the barrel of a rifle by one on a rail-like locking approach of the Barrel attacking slide bolt. Der'Gleitriegel is displaceable by hand or by a finger The actuating member is combined to form a uniform workpiece and, together with it, forms one arranged in the shaft uniform sliding member, which in the sense of a locking of the shaft with the rail-like locking approach of the Barrel is spring-loaded.

As can be seen from the dex * drawing, the locking device a base plate 1, one end of which is on the underside of the front end of the rifle stock 50 is attached by means of a mounting bracket 49, the is fitted through an opening 2 in the shaft. Given-

3098 10/0203

if a cover plate, not shown, can over the base plate 1 be arranged, which covers the mounting bracket. Here, the shaft 50 between the base plate 1 and the Be arranged cover plate. The fastening fitting 49 protrudes downward through the opening 2 into the shaft and rests against the inside of the cover plate. The other end of the base plate 1, which is shown broken off, contains two openings similar to opening 2 for fastening this end of the base plate to the shaft. The barrel 4 of the rifle is provided on its underside with a rail-like locking attachment 5, which is attached to its front end 6 has an inverted T-shaped cross section on which two inclined ramps 7 and 7a arranged on both sides of the web leak.

The locking device contains a bolt 8 with two beak-like ends 9 and 9a arranged on each side » of which the beak end 9 rests on the ramp 7 and the beak end 9a on the ramp 7a. The two ends of the beak of the bolt 8 are held forward in contact with the respective ramp by a spring 10 or 10a. Both Springs are tension springs, each with their one ends in a slot 11 or 11a of the base plate 1 and with their other ends 12 and 12a are hooked into a locking plate 14. Since the springs 10, 10a, the locking plate 14 forward pull and the locking plate 'is supported with its front end 16 on the bolt 8, the bolt 8 is also after pulled forward.

The bolt 8 is designed as a sliding bolt and is provided on each side with a sliding groove 15 or 15a, in which guide edges 17 and 17a of the base plate 1 engage, so that the Latch 8 is slidable or displaceable on the base plate. A fixed lever is attached to the slide lock to move it or actuation approach 18 attached, which consists of a piece with the bolt 8 exists and by means of which the sliding bolt can be moved backwards by hand or with a finger,

3 0 9810 / U203

so that the beak ends 9 and 9a of the slide bolt from the Ramps 7 and 7a of the rail-like locking projection 5 of run 4 expire. For placing a finger on the actuation attachment 18 this is on the front hand with an * roughening 19 provided.

The bending plate 14 extends from its supporting end 16 to the rear and covers the for the backward displacement of the actuation approach 1.8 provided space.

When the locking device and front end combination is mounted on the barrel, it must take a precise fit to the rail-shaped locking projection 5. Until now Such an adaptation was made with regard to the fact that the dimensions of the rifles were different within the tolerance range are brought about by hand by filing an edge 20. (ELg-. 2) of the rail-like locking projection 5 of the barrel. ■

According to the invention is the adaptation between the shaft and barrel avoided by hand. This is made possible by an adjustment plate 21 which can be arranged so that they each Clearance between those labeled "a" and "b" in Mg. 2 Can compensate for positions. The adjustment plate 21 is adjustable by means of an eccentric cam 22, which has threads is provided and screwed into the base plate 1. The eccentric cam 22 has an eccentric circumferential edge 23 vershen, which brings about the displacement of the setting plate between "a" and "b" when the cam is turned.

The sliding latch 8 ensures a very precise interference fit in the rail-like projection 5, because the ramps 7 »7a provide the mechanical advantage that the beak ends 9 '9a of [the bolt during the forward movement of the same ride up with the neck 5 with increasingly large expectant accuracy. If the rifle is fired repeatedly, it will interfere

3098 1 0/0203

repeatedly improved by the recoil force, so that the bolt is always accurate even when firing many shots Engagement with the approach 5 or the barrel is.

Expectations: 309810/0203

Claims (1)

- 7 -
Expectations Locking device for releasably connecting the front end of the stock to the barrel of a firearm by means of a spring-loaded slide bolt, characterized in that a rail-like Locking shoulder (5) for engagement with the sliding bolt (8) is arranged and the slide bar with its actuating member which can be displaced by hand or by a finger (18, 19) is combined to form a unitary workpiece displaceable in the shaft (50), by means of a spring device (10, 10a) connected to it and fastened to the shaft in the sense of the locking engagement is burdened. Device according to claim 1, characterized in that the locking projection (5) of the barrel (4) at least has an inclined ramp (7 »7a) on which the bolt (8) is displaceable into locking engagement with the locking shoulder and out of this engagement. Device according to claim 1 or 2, characterized in that the spring device for loading the bolt (8) consists of two springs (1O, 10a) arranged next to one another. Device according to one of Claims 1 to J, characterized in that that with the shaft (50) an adjustment plate (21) is connected to bring about a precise fit between the shaft (50) and barrel (4) on the Locking approach (5) engages the barrel. Device according to claim 4, characterized in that to ensure a snug fit between the shaft (50) and Barrel (4) a squat member (22, 23) is arranged, the 30981 0/0? Q3 adjusts the adjustment plate (2i) so that there is too much oil leeway is added between her and the locking lug (5). By patent attorney ORIGINAL INSPECTED