US1855402A - Firearm - Google Patents

Description

April 26, 1932.

FTREARM C. C, LOOMIS Filed Sept. ll. 1930 SHOW/Muay Patented Apr. .'26, 1932 U il? CRAWFORD C. LOOMS, 0F ILION, NEW YORK, ASSIGNOR TO REMINGTON ARMS COM- PANY, INC., A CORPORATION OF DELAWARE FIREARM Application filed September 11, 1930.

rlhis invention relates to firearms, and particularly to rearms of the magazine type, and has for its object the provision of devices for the purpose of limiting the capacity of the magazine of such a firearm.

Owing to the increasing' scarcity of game, it has become desirable to limit the number of shots which can he fired from repeating and auto-loading guns without the necessity for hand reloading. A single hunter equipped with a large capacity magazine auto-loading gun can work great destruc- 1tion, particularly with such game as flying birds; and the present depletion of the stoclr of game birds and other animals is frequently attributed to the over-effectiveness of modern repeating and auto-loading guns. For the salie of preserving the game, and perpetuating the sport of limiting, it is becoming increasingly common among Sportsmen to carry not more than two fresh shells or cartridges in a gun at a time. Many States have laws definitely limiting the capacity of sporting gun magazines to two cartridges. However, there is always in the field the class of shooter' who is desirous of equipping himself with the maximum number of cartridges for repeated firing without reloading, and to this end even the normal magazine capacity of guns as distributed by their manufacturers is sometimes increased by the use of magazine attachments and extensions.

One such magazine extension, applied to a well-known type of auto-loading shot gun, is illustrated in the patent to Parsons, No. 1,7 02,221, February 12,1929. in this firearm, the magazine tube extends entirely through the fore-end and is closed by a cap screw threaded on to the extending end of the tube and bearing against the fore-end; thus, itbecomes a comparatively simple matter to remove the cap screw, withdraw the magazine spring and the follower, and replace the cap screw with a coupling joined to one or more sections of tubing in which the magazine spring and cartridge follower are inserted, thus, greatly increasing the 'magazine capacity.

It is an object of the present invention to provide a means for preventing the use of Serial No. 481,275.

elevation, partly in section, illustrating one form of the invention.

Fig. 2 is an illustration of a development of the end of a magazine tube having the present invention applied thereto.

Fig. 3 is a development of a section of the magazine tube showing a slightly different embodiment of the invention.

Fig. 4t is a side elevation of a magazine tube the capacity of which has been limited to two cartridges by the use of the invention.

Fig. 5 is an elevation of a magazine follower adapted for use with the form of the invention shown in Figs. 1 and 2.

Fig. 6 is an elevation of a magazine follower adapted for use with the form of magazine tube shown in Fig. 3.

The firearm embodies a barrel 10, a receiver 11anol a fore-end 12 which houses a magazine tube 13. Said magazine tube is rigidly secured in the receiver 11, extends throughout the foreend 12 and has a threaded forward end 14 adapted to receive a Cap screw 15, a flange 16 of which abuts the forward face of the fore-end. The gun is of the auto-loading type, a recoil spring17 surrounding the magazine tube 13 is compressed betweenfthe forward end of the receiver and a suitable friction device, indicated generally by numeral 18, which engages the apertured ylug 19vrigidly secured to the barrel. Upon lfiring the gun, the barrel 10 recoils with respect to the receiver, the-magazine tube and vfore-end; comprising the spring 17 which, at

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mitted through the material of the fore-end, the engaging threads of cap screw 15 and the Amagazine tube, and through the magazine Vseries of indentations, such as 21 and 22 (Fig.

2). In making such indentations the metal is displaced to such an extent that its outersurface lies within the inner-surface of the cylindrical tube, and the indentations form an abutment which the cartridges in the mag.- azine cannot pass; thus, obstructing the foremost cartridge in a definite position and placing adeiinite limit upon the capacity of the magazine. Such indentations may be placed at or near the end of the tube, where they cross the threads 14, or they may be placed in any desired location throughout the length of the tube. They may, moreover, extend either longitudinally or circumferentially of the tube, as desired; circumferential indentations being shown at 23 in Fig. 3. `Where the indentations are associated with the threaded end of thejtube, all or part only of them may terminate at the end ofthe tube, as shown in Fig. 2. It isV quite impracticable to remove such indentations, once they have been made, and thereby adapt the gun for a magazine extension or increase Athe magazine capacity, for the reasonthat oncethe tube wall has been indented in the manner described an -attempt to remove the indentations bygrind- 'ing or filing, or to restore this metal 'to its original position in the cylinder wall, will inevitably weaken vthe tube to such anextent Ythatit is incapable to withstand the shock maybe-given the contour illustrated in Fig. V5 ifthe tube isfindented as' shown in Figs. 1 'and 2, or they contour illustrated in Fig.-6 if the tube is indented as showninv Fig. 3- The contours 'illustrated enable the magazine fol- 'lower -to pass the ,indentations in assembly.

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Once the arm is assembled thepossblity the cartridge follower rotating to such a position that its peripheral notches wil'lbe in alignment with the tube indentations, per-- initting'the follower to move forward past 7 pacities andl preventingfthe'use of' magazine 7 extensions is'thus secured.

It is to be understood that the embodiment of the invention shown in the drawings and herein described -iscnierely illustrative, and

that the invention may take many other 9" forms, all falling within the scope ofthe ap-k pended claims.

What'is claimed is: Y

1. In a firearm magazine, means for ilimiting the capacityro'f themagazine comprising obstructions projecting inwardly from Vthe magazine wall,'and so related to themagaz'ine wall that their removal destroys the magazine.

2. In a tubular firearm magazine adapted o to contain a column of cartridges, means for Vlimiting the capacity of the magazine comprising indentations in the 'wallof the inaga- Y zine tube so designed that their -removalsubstanti ally weakens the tube wall. i

3. In a tubular firearm magazine' tube.`

adapted to contain a column of cartridges, y

meansfor limiting the capacity of said magazine tube comprising tube diameter reducing devices projecting radially from the tube' wall, and a cartridge follower in said tube threaded end adapted to receivefa cap screw, l

and diameter rcduc'ingindentations inter-sect-k ing said thread and so designedthat their-removal substantially weakens said thread.y

CRAWFORD c. Lo'oMis.`

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