US2400349A

US2400349A - Collapsible gunstock

Info

Publication number: US2400349A
Application number: US461515A
Authority: US
Inventors: Alfred H Haberstump
Original assignee: Murray Corp
Current assignee: Murray Corp
Priority date: 1942-10-10
Filing date: 1942-10-10
Publication date: 1946-05-14
Anticipated expiration: 1963-05-14

Description

y 1946; A. H. HABERSTUMP 2,400,343

GOLLAPS IBLE GUNSTOCK Filed'Oct. 10, 1942 3 Sheets-Sheet 1 INVENTOR M yam. ATTORNEY-S.

y 1946- A. H. HABERSTUMP 'COLLAPSIBLE GUNSTOCK 3 Shgets-Sheet 2 Filed Oct. 10, 1942 May 14; 1946. AHQHABERSTUMP 2,400,349

CQLLAPSIBLE GUNSTOCK Filed Oct. 10, 1942 3 She ets Sheet s A TTORNE Y5 Patented May 14, 1946 COLLAPSIBLE GUNSTOCK Alfred H. Haberstump, Detroit, Mich, assignor to The Murray Corporation of America, Detroit,

Mich., a corporation of Delaware Application October 10, 1942, Serial No. 461,515

Claims.

This invention relates to rifle stocks, and particularly to a butt stock for a rifle which swings from a position of nested engagement with the forearm portion under the barrel to a position in rearward extension thereof.

It has been the practice to make the forearm and buttportion of the stock of a rifle from a single piece of wood, or from a plurality of sections which are fixed to each other and to the gun barrel.

' It'is an object of the present invention to construct a butt stock from hinged elements which permit the butt endto swing from a position beneath the forearm stock portion to one in extension thereof. V

, It is a further object of the invention to employ a latch for securing thebutt stock in extended position of the forearm stock portion and also in collapsed position under the forearm stock position.

It is a still further object of the invention to pivot the butt plate of the butt stock portion on a pair of links which support the butt plate in rearward extension of the forearm portion and in engagement with the forearm portion when the butt stock portion is collapsed.

It is a still further object of the invention to mount all of the elements of the collapsible butt stock on a bracket so that the butt stock portion is a self-contained unit. a

It is a still further object of the invention to provide a butt stock portion for a gun, which is simple in construction, positive in operation, and economical of manufacture.

Other objects and features of novelty of the invention will be either specifically pointed out or will become apparent when referring, for a better understanding of the invention, to the following description taken in conjunction with the accompanying drawings, wherein:

Figure 1 is a view in elevation of a rifle having a butt stock portion embodying features of the invention disposed in extended position;

Fig. 2 is an enlarged broken view of the structure illustrated in Fig. 1;

Fig. 3 is a plan view of the structure illustrated in Fig. 2;

Fig. 4 is a view of structure, similar to that illustrated in Fig. 2, with the butt stock portion in folded position against the forearm portion of the stock;

Fig. 5 is an enlarged sectional view of the structure illustrated in Fig. 3, taken on the line 55 thereof;

Fig. 6 is an enlarged broken view of the hinge and latching portions of the butt stock illustrated in Fig. 2;

Fig. '7 is a. view of structure, similar to that illustrated in Fig. 6, showing a further form which the invention may assume;

Fig. 8 is an enlarged sectional view of the structure illustratedin Fig. '7, taken on the line 88 thereof;

Fig. 9 is a broken view of structure, similar to that illustrated in Fig. 1, showing a further form which the invention may assume; and

Fig. 10 is an enlarged broken view of the structure illustrated in Fig. 9.,

In Figures 1 to6 inclusive, a rifle or carbine (I is illustrated, with the forearm portion l2 of the stock made of wood in the conventional manner. The butt stock portion l3 comprises a pair of links i and a pair of links l5, the rear ends of which are pivoted to side flanges 16 of a butt plate element H. 'The opposite ends of the pairs of links are pivoted to'a ,U-shaped bracket It! on the side flanges [9 thereof. I

The pairs of links M .a'reinwardly offset at 2| and engage the sides of a latching element 22 when secured by shouldered pins 23 to the rearward portion of the side flanges IQ of the bracket I8. The pairs of links I5 are aligned with the links id, as illustrated in Fig. 3, and are secured to the forward portion of the flanges H) by pivot pins 24. A pair of springs 25 are secured to the web portion of the bracket l8 by rivets 26 in position to engage the latch arms 21 on each side of the latch 22. The arms are provided with a wedge-shaped recess 28 in which pins 29 on each of the links 15 project. The wedged relation between the pins andthe recess forms a lock which retains the butt stock portion in extended relation and removes any play or looseness which may otherwise be present in the hinged structure.

The rear end of the forearm portion I2 is shaped to receive the bracket It and the pivots and latch above described. The bracket is secured in position by a screw 3| which clamps the pistol grip 32 on the rear end of the forearm stock portion.

A dowel pin 33 may also extend through the bracket and forearm portion to prevent the grip 32 from twisting. Apertures 34 and 35 in the web of the bracket l8 permit the insertion of the dowel pin 33 and screw 3| through the bracket.

An arcuate slot 36 is cut in each side of the rear end of the forearm portion l2, struck about the pivot 24 to permit the pins 29 to move through the slot without interference when the butt stock portion I3 is moved from extended position, as

illustrated in Figs. 1 and 2, to the folded position, as illustrated in Fig. 4. In this position the butt plate element [1 snugly engages the forearm portion I2 and forms a. hand grip for the rifieman when shooting the gun as a hand gun. A headed stud 20 may be provided within the butt plate element, in position to project within the spring latch 30 embeddedin the forearm stock portion 12. When it is desired to fire the rifle in a normal manner, with the butt stock braced against the shoulder, it only requires an instant to swing the butt plate element H from the position illustrated in Fig. 4 to the extended position illustrated in Figs. 1 and 2. The butt stock portion is im-.

mediately locked in the extended position in firm invention is illustrated, that wherein a greater drop is obtained to the butt plate element ll by employing a. pair of curved links 41, the forward ends of which are secured to the opposite sides of the pistol grip 32 by a pivot pin 48. The latch 22 looks the butt stock portion in rearward extension of the forearm portion l2 while permittingthe butt plate element l1 tobe moved into "that obtained with the structure illustrated in fixed extension of the forearm stock portion.

When collapsing the butt stock portion, the latch 22 is moved to the rear to release the pins 29 from the notches 28 which permits the butt plate element H to be swung downwardly and under the forearm portion l2 of the: stock into the position through arcuate slots 38 which are struck from thecenter of the pivots 23. The springs .25 engage the projecting tabs 31 and urge the latch arms 21 in clockwise rotation about the, pivots 23. .This urges the slot 28 of the arms over the pins 29 and the wedged relation therebetween securely locks the pairs of links l4 and I 5 in extended position and removes any play which may otherwise be present between the elements which comprise the base stock portion.

In Figs. '7 and 8, the pins 29 are illustrated as being secured to the end of spring strips 39 which are attached to the pair of links I5 by the rivets 4!; The pins extend through apertures 42 in the links l5 in position to be engaged by the latch arms 21 of the latch 22. Slots 43 in the sides of the forearm portionl2 of the stock are similar to the slots 36 above-mentioned, with the exception that inwardly sloping surfaces 44 and 45 are provided at the lower and upper portions of the slots, respectively; The pins 29 when moving into the slots 43 as the butt plate I1 is moved toward its collapsed position against the forearm portion I 2, will ride up the sloping surfaces 44 and down the sloping surfaces 45 to abut against shoulders 46 near the end of the slot. The resistance offered by the pins 29 against movement up the slope 45, retains the butt stock portion in the collapsed position illustrated in Fig. 4, while permitting its movement therefrom when an outward force is applied to the butt plate element I'l thereof.

In Figs. 9 and 10, a still further form of this Figs. 1 to 6, the structure does require the addition of the pistol grip 32 to form the completely assembled unit. I Otherwise, the'butt stock illustratfid in Figures 9 and 10 is the same as that illustrated in the foregoing figures.

What is claimed is:

1. A butt stock for attachment to the forestock of a firearm as a separate. unit, comprising a bracket of U-shape for'encompassing a stubportion at the rear of the forestock, two pairs of links pivoted on said'bracket, and a butt'plate on the end. of said links connected by'four'pivots to the link ends. I

2; A butt stock forattachment'to the forestock of a firearm jas a separate unit, comprising a bracket of U-shape for encompassing a stub portion at the rear of the forestock, two pairs of links pivoted on said bracket, a butt plate on the end of said links connected by fourpivotsto the link ends, and a latch carriedby said bracket for locking said links in an adjusted position.

3. The combination with the forestock of a firearm, of a pair of links secured at each side of the rear end ofthe forestock for pivotalmovement from a position along the side of the forestock downwardly and'rearwardly to a position in extension thereof, a butt plate having pivoted connection with the ends of said four links, and releasableimeansfor securing said links against pivoting movement on saidforestock when in position of extension thereof.

I 4. A butt stock for. attachment to the forestock of a firearm including a bracket attachable .to the rear end of said forestock, a butt plate, and four links pivoted to said butt plate and to said bracket for supporting the ,buttplate for arcuate movement about said bracket.

5;. A butt stock for attachment to-the forestock of a firearm including a, bracket attachable to the rear end of said forestock, a butt plate, four links pivoted to said butt plate and to said bracket for supporting the butt plate, and latch means for locking said butt stock in extended position.

ALFRED H. HABERSTUMP.