US2338984A

US2338984A - Magazine for firearms

Info

Publication number: US2338984A
Application number: US381452A
Authority: US
Inventors: Oertel F Van Horn; John D Whittaker
Original assignee: AUTOMATIC APPLIANCE CORP
Current assignee: AUTOMATIC APPLIANCE Corp
Priority date: 1941-03-03
Filing date: 1941-03-03
Publication date: 1944-01-11
Anticipated expiration: 1961-01-11

Description

Jan. 11, 1944. Q F VAN HORN TAL 2,338,984

MAGAZINE FOR FIREARMS Filed March v3, 1941 I 5 Sheets-Sheet 1 Jan. ll, 1944. o, F. VAN HORN ETAL 2,338,984

l MAGAZINE FoR FIREARMS Filed March 3, `1941 5 sheets-sheet 2 I7/ 53 651NVE TORS TTOANEYS Jan- 11, 1944. o. F. VAN HORN ETAL. 2,338,984

MAGAZ INE FOR FIREARMS Filed March 3, 1941 5 Sheets-Sheet 3 A OEETZ E i y dof/N m44/v va? l C ,4 TTOR/VEYS MAGAZINE FOR FIREARMS Fiid March 3, 1941 5 Sheets-Sheet 4 NVET R5 '05,9752 ,c -ly ,y0/WV I BY JOHN DW /774 o. F. VAN HORN Erm.` 2,338,984

Jan 1l, oQF. VAN HORN Erm. 2,338,984

MAGAZINE Fon` FIREARMS Filed-March 3. 1941 5 Sheets-Sheet 5 VENTORSl Patented Jan. 11, 1944 MAGAZINE FOR FIREARMS Oertel F. Van Horn, New York, and JohnD.

Whittaker, Babylon, N. Y., assignors to Automatic Appliance Corporation, New York, N. Y., a corporation of New Jersey Application .March 3, 1941, Serial No. 381,452

4 Claims.

Thisinvention relates to a magazine unit for fire-arms and refers more particularly to a container for cartridges which is adapted to be attached to nre-arm andV which supplies cartridges automatically, one after the other, to the firing chamber of the fire-arm.

In. our co-pending application for United States Letters Patent, led Feb. 21, 1941, Ser. No. 379,916 and relating to Firearms, we have described pistols and riiles which may be converted by a selector mechanism into continuously shooting guns discharging bullets automatically, one after the other, while the shooter holds the trigger in a depressed position. These nre-arms may also be used for the'usual intermittent shooting in the course of Which the trigger must be pulled and released' once for each shot.

These and similar ries and pistols are usuallyy provided with fire-arm magazines which are adapted to contain a limited number of bullets, usually seven, and which are inserted into the hollow handle of a pistol or are attached to the casing cfa rie.

While this small supply of cartridges often suf'ces for intermittent shooting, the fire-arm must be supplied automatically with a much larger number of cartridges if it is to fulfill the purpose of a machine gun during continuous firing.=

An object of the present invention is to provide I a magazine unit containing a large number of cartridges, say, twenty ve, thirty or forty cartridges, and having means automatically supplying these cartridges, one after the other, to the chamber of a nre-arm. f

Another object is the provision of a magazine for cartridges which is comparatively small in size and light in weight and which is provided with simple, sturdy and eiiectively operating means withdrawing the cartridges automatically one after the other from the magazine and supplying them to the chamber of an automatically firing fire-arm.

A further object is to combine the fire-arm magazine` of' pistols and riiies which contains a small number of cartridges, with a second cartridge magazine holding a much larger number o cartridges, and cooperating with the irearm magazine in such manner that the catridges may be supplied in a continuous flow from the cartridge magazine into the nre-arm magazine andthence into the chamber of the nre-arm.

A 'still further object of the present invention' is the provision oi a magazine for cartridges which is provided with an adjustable cartridge releasing mechanism and whichV is so constructed that incorrect loading can be immediatelyI de tected.

Yet another object is the provision of a magazine unit including a cartridge magazine and a fire-arm magazine, and provided with two separate spring-actuated cartridge-rele'asing devices operating automatically, one after the other, to withdraw'cartridges from the magazines and to supply them successively to the chamber of the nre-arm.

Other objects will become apparent in the course of the following specic'ationf.

In accomplishing the above and other objects of the present invention, itvwas found advisable to provide a magazine unit including a cartridge magazine having a spring-actuated cylinder or drum situated Within a casing and carrying partitions upon its periphery to provide a plurality of cartridge-'containing chambers.

The casing is provided with an opening through whichA the cartridges in these chambers may' -be ejected one after the other Iby the rotation of the drum.

A fire-arm magazine of the type having a follower actuated by a springis mounted upon the casing over this opening. The drum is provided with an inner pocket or chamber which is situated opposite the opening in the unloaded position of the drum and whichreceived the spring of the nre-army magazine.

The follower of the re-armmagazine is so shaped that it may be clamped within the pocket and close to the periphery of the drum by a clamping mechanism carried by the dum, While the chambers of the drumY are being loaded, or while cartridges from these chambers arebeing discharged.

An automatically operable releasing mechanism is used toI enable'theollowerand the adjacent end of the follower spring to move into the rearm magazine whenever this isnecessary to unload the cartridges in the fire-arm magazine.

The invention will appear more clearlyl from the following detailed description when taken Ain connection with the accompanying drawings showe ing, by way of example, preferred embodiments of the invention idea.

In the drawings:

Figure 1 is a perspective view illustrating a magazine unit constructed in accordance with the principles of the'present-invention'.

Figure 2 is a side View, partly'insection, illustratinga pistolxwith a magazine unit attached i5 thereto lnthe firing position;

Figure 3 is a fragmentary section along the line 3-3 of Figure 2.

Figure 4 is a longitudinal section through the magazine unit.

Figure 5 is a section along the lines 5-5 of Figure 4.

Figure 46 shows the cartridge magazine with its cover removed, in side elevation, partly in section, during loading' or firing.

Figure 7 is similar to Figure 6 and shows the cartridge magazine when it is fully loaded.

Figure 12 is a fragmentary section along the Figure 13 is a fragmentary section along the line |3|3 of Figure 11.

Figures 14 and 15 are similar to Figure 5 and illustrate the movement of the cartridges from the cartridge magazine to the fire-arm magazine.

The magazine unit shown in the drawings 1ncludes a cartridge magazine connected with the fire-arm magazine 2|.

When the magazine unit is not being used, the upper end of the casing I 9 of the fire-arm magazine 2| may be closed by a correspondingly shaped cover 21, shown in Figure l.

The fire-arm vmagazine 2| is provided with the spring 62 (Fig. 4) actuating a follower 15 having a cartridge-supporting surface 16 and two grooves 11 and 18 formed upon the side surfaces of the follower and used for clamping the fol-v lower, as will be described in detail hereinafter.

In order to attach the loaded magazine unit to a nre-arm, the vcover 21 is removed and the magazine 2| is inserted into the hollow handle 30 of a pistol 3|, as shown in Figure 2.

The upper open end of the casing I9 of the nre-arm magazine 2| is provided with inwardly bent edges for maintaining in position the uppermost cartridge 51. The usual slot 32 of the casing |9 receives the projection 33 of a magazine catch 34 loaded by a spring 35. As shown in Figure 3, the magazine 2| is firmly held by the magazine catch 34 within the handle 30.

The casing I9 has a lower porti-on 22 of greater thickness and the lower edges of the handle 3|) rest upon the shoulders of the portion 22.

The portion 22 has two parallel flanges 23 (Fig. 4) which tinto grooves 24 provided in a bead enclosing the discharge opening 26 of the cartridge magazine 20, and constituting a part of the casing 36 of the cartridge magazine.

A downwardly extending li-p 28 of the casing I9 engages an inner surface of the cover 29 of the cartridge magazine 20 (Fig. 5).

The casing 36 of the cartridge magazine 2U includes an annular portion 55 and a curved edge 1|. The casing carries a shaft 31 which is integral with a ratchet gear 38 and which has an end portion 39 projecting out of the casing 36 and carrying a knob 40 which is firmly connected to the shaft end 39 by a screw 4|.

The casing 36 carries a pawl 6B (Fig. 8) which is in engagement with the ratchet gear 38 and which is pressed against its teeth by a spring 69.

Another threaded end 42 of the shaft 31 is of smaller diameter and carries a knob 43 (Fig. 5). The knob 43 which is screwed upon the shaft end 42, may be unscrewed when removing the cover 29.

One end 44 of the spirally wound leaf spring 45 is riveted or otherwise firmly connected to the shaft 31. The opposite end of the spiral spring 45 has the form of a sleeve 46 enclosing a pin 41 which is carried by a drum or cylinder 49 withinthe hollow interior 48 thereof.

The drum or cartridge carrier 49 consists of two

parallel discs

50 and 5| which are mounted upon the shaft 31 and which are interconnected by a rim 52.

The outer surfaces of the rim 52 carry radially extending projections 53 which are separated by substantially cylindrical grooves 54, the diameter of which corresponds to that of a cartridge shell, so that the space between the drum 49 and the adjacent annular wall 55 of the casing 36 is divided vinto a plurality of chambers 56, each of which may contain a cartridge 51.

The drum 49 is held in the unloaded position shown in Figures 4 and 5, against the pressure of the spring 45 by the engagement of a projection 58 carried by the disc 50 of the drum.'

49 with a stop 59 which is carried by or integral with the casing 36.

The drum 49 may be locked and released from the outside by a locking device which is shown in greater detail in Figure 13 and which included a knob |03 mounted upon an outer surface of the casing 35 by means of a pin |64 extending through the casing and connected with a lock |65 which is located within the casing and which ts into a recess ||0 provided in the drumV 49. A spring engaging the lock |05 serves to maintain the lock in its locking or open positions.

In the position shown in Figure 4, the opening 26 of the cartridge magazine is separated from one of the chambers 56 by a transversely extending wall 60 having a rounded peripheral surface 6| corresponding in form to the annular wall 55/ of the casing 36. An inclined cartridgereceiving and cartridge-raising plate 82 provided with a large central opening 8| is situated on the other side of the opening 26 and is carried by the casing 36.

The drum includes a transverse chamber or pocket 8|) which is enclosed on two sides by the rim 52 and an inner wall 63, and on the other two sides by the discs 50 and l5| of the drum Y49.

The disc 5| of the drum 49 carries a plurality of peripherally disposed teeth 64 which mesh with a pinion 65 keyed upon a shaft 66 mounted in the cover 29.

The shaft B6 is rmly connected with a winged nut 61 situated outside of the cover 29 and used to rotate the drum 49 and wind the spring 45 while the magazine unit is being loaded.

The cover 29 carries an annular rib or flange 10 (Fig. 5) extending close to the chambers 56 and serving as a guide for the cartridges 51 situated within these chambers. Flanges 16 of different heights may be used to guide cartridges of different calibers, however, a different casing 99 must be used for each caliber. As shown in Figure 5, the curved portion 1| of the casing 36 corresponds substantially to the curvature of the bullets 12 of the cartridges 51.

Due to the" provision of the flange 10, the cartridges 51 fit aacsgosa.

intov the chambers 56 only when they are properly inserted intov the magazine unit.

The clamping device which is used for holding the follower l within the `pocket 89, includes two pawls 85. and 86 (Fig. 4) provided with reduced ends for engaging the grooves and 18, respectively, of the follower.

The pawl 85 which is situated in a recess 88, is keyed upon a shaft 81 mounted in the wall 60. The pawl 86 is situated in a recess 9.0 and is keyed upon a shaft 89 which is mounted in the wall 63.

As shown in Figures 6, 7, l0, and l1, the shaft 81 carrying the pawl 85 is-firmly connected with a link 9|, one end of which carries a pin movable Within a slot 92 of a lever 93. The shaft 89 carrying the pawl 86 is connected in a similar manner with a link 94 having a pin which is movable in another slot 95 provided in the lever 93.

The lever 93 has a round portion 96 which is mounted upon a corresponding portion of the shaft 31.

The disc 5| of the drum It!! carries a stop 91 for the lever S3 and the lever 93 is pressed against this stop by a spring 98 having the form of a U, one of the legs cf which is attached to the lever 93 by being inserted into an opening formed therein. The other leg of the spring 98 is held in an opening provided inthe 'disc 5|.

The links 9| and 9d are arranged in such manner that when the lever 53 vis pressed against the stop 9? by the spring. 98, the

pawls

85 and 85 project into the pocket 80 and may engage the grooves t? and 19 of the follower 75. However, the links 9i and 94 will move along with the lever 9S when the latter is swung toward the spring 98, thereby compressing the spring,

and then the shafts 3l and 89 will carry out a turning movement and Withdraw the

pawlsY

85 and 85 from the chamber Si), thereby releasing the follower 15.

The device used for actuating the lever 93 includes a spring S9 carried by the cover 29. As shown in Figures 9, and l1, the leaf spring 99 is arcuate in form and has a bent end.

The spring 99 carries a projection |99 Which is adapted to engage an upper edge of the lever 93 while the drum 99 is being. rotated in the direction of the arrow itil shown in Figure 10, to discharge the cartridges.

The drum 99 also carries a pin |62 which may be engaged by the bent endof the spring S9, thus bending the spring 99 outwardly and releasing the lever 93 from engagement with the projection 00.

It is apparent from the above that during the loading of the magazine unit the drum i9 must be turned and the spring 45 wound, while the spring a5 unwinds itself during the unloading. Whenever the tension of the spring 45 becomes too weak as a result of continuous use of theV niagaine unit, it may be conveniently increased by turning the knob |59 in the direction of the arrow |91 shown in Figure 4. The shaft 37, the pinion 38 and the adjacent end :14| of the spring 55 will turn together with'the knob 49. The pawl 69 engaging the pinion 38 will prevent the turning of the shaft 37 in the opposite direction.

It is possible to load the magazine unit by re- However, the more customary procedure is to load the magazine unit by inserting the cartridges one by one into the upper open end of the fire-arm magazine 2|, while the drum is turned stepwise in the direction of the arrow it? by means of the winged nut 61.

Figures 4 and 5 illustrate the magazine unit at the beginning of the loading operation, although, obviously, the various parts of the magazine unit will have the same positions close to the end oi the unloading operation.

In the position shown in Figures 4 and 5, the drum 49 is held against the action of the spring 15 by the engagement of the projection 58 with the stop 59. In this unloadedl positiony of the drum 49 the opening '26 of the magazine 29 is situated opposite the outer end of the pocket 99. The follower spring 62 is located in the bottom of the pocket and the outer end of the pocket 8D is closed by the follower l5 which is held in place by the engagement of the pawls and 86 with itsgrooves 1l and 18, respectively. The caru tridges fill the re-arm magazine 24 and the lower-most cartridge rests within the opening 29 upon the cartridge supporting surface 76 of the follower '|5.

Then the user turns the winged nut 5'! step by step while continuing to feed the cartridges through the upper end of the fire-arm magazine 2|. Since the nut 61 is firmly connected with the pinion 65 meshing with the teeth 54 of the drum 49, the drum.49 will be rotated step by step against the action of the spring t5.

In the course of this rotation of the drum 59, the cartridge resting upon the surface 'i5 of the follower 15 will be moved away from the opening 25 in the direction of the arrow |91 and a projection 53 will move through the central opening 8| of the inclined cartridge-supporting plate 82. Then the next cartridge will drop into position upon the drum 99, as shown in Figure 6.

The cartridges will' fall one after the .other into the chambers 56, as these chambers are moved below the opening 26 in the course of the rotation of the drum 49.

As shown in Figure 7, the cartridge magazine 29 is fully loadedwhen all the chambers 59 are filled with cartridges which also iill the nre-arm magazine 2|.

As already stated, the loaded magazine unit is inserted into the pistol 3| in the manner indicated in Figure 2. The cartridges are supplied one after the otherA from the upper end of the fire-arm magazine 2| to the chamber of the pistol by the reciprocation of the slide of the fire-arm in the usual manner which is not illustrated.

As the cartridges are being removed from the upper end of the nre-arm magazine, the spring 45 will turn thel drum 49 in the direction of the arrow IBI (Fig. 10); A cartridge situated within the opening 26 closeV to the support 82 will be raised from its chamber 56 into the fire-arm magazine 2l by the pressure of a projection 55 directed toward the support 82. This upward 3 movement of a cartridge from the opening 26 of the cartridge magazine 29 into the lower end of the fire-arm magazine 2|, will shift upwardly all the cartridges situated within the magazine 2| so that the uppermost cartridge will be placed within the path of movement of the fire-arm slide. The cartridges serve as bearingsl turning about their axes while the drum 49 is being rotated. v

The lever 93 moves along with the drum i9 and is'pressed against the stop`v 91 by the spring S3 while the drum is turned by the spring 45 from the position shown in Figure 7 to the position shown in Figure 10.

However, as illustrated in Figure 10, the upper end of lever 93 strikes against the projection |60 carried by the spring 99 during the unloading operation at a time when two last cartridges remain in the cartridge magazine 20. The projection Ilil will then maintain the lever 93 in the position shown in Figure l0, while the drum i9 continues to move in the direction of the arrow iti. One more cartridge will be pushed upwardly into the lower end of the fire-arm magazine 2i by the pressure of the adjacent last caru tridge, which is directed toward the plate 82. At the same time, the movement of the pawlMcarrying shafts til and 89 which are mounted in the drum 49, relatively to the lever 9,3 will swing the links 9i and 94 and thus turn the shafts 6'! and 3% along with their pawls 85 and E5. The pawls 35 and will move out of the grooves 'il and 78 of the follower l5, thereby releasing the follower which will be moved slightly upward to clear the pawls 85 and 8E by its spring 62. r)This movement is made possible by the play between the cartridges in the magazine 2|. 'When the nest cartridge is fired, the last cartridge situated with in the cartridge magazine 20 and carried by the supporting surface l of the follower 75, will be raise-d into the lower end of the fire-arm magazine Z by the spring 62, as indicated in Figure ll.

While the drum 49 moves from the position shown in Figure to the position shown in Figure l1, the pin |62 carried by the drum 49 strikes the bend end of the immovable spring 95 and pushes r this spring outwardly, thereby withdrawing the projection lili) from engagement with the lever 53. The spring 88 will then move the lever S3 back into its original position in which the lever S33 is pressed against the stop Si and the ends of the

pawls

85 and 86 project into the chamber 8i) and are ready to grasp the follower l5. However, at that time the follower is situated within the fire-arm magazine 2| and is pressed upwardly by the spring 62 which is suiciently narrow so as not to be engaged by the pawls. The upward movement of the cartridges in the fire-arm magazine 2| during firing is now caused by the follower 'i5 actuated by its spring G2. This up ward movement continues until the last cartridge carried by the surface T6 of the follower 'i5 is moved to the upper end of the fire-arm magazine 2| and is ready to be supplied to the chamber of the fire-arm. After the ring of that cartridge it is replaced by the follower 'I5 which is now situated in its uppermost position, while the spring t2 occupies substantially all of the interior ci' the fire-arm magazine 2|.

At the beginning of thereloading operation, the cartridges are inserted one after the other into the fire-arm magazine 2| through its open upper end; they push downward the follower 'l5 and compress the spring 62 until the entire fire-arm magazine 2| is filled with cartridges and the follower '15 is pushed into the pocket 80; The lower surfaces of the follower 'l5 are so lshaped that they will move below the pawls 85 and t@ and will enable the pawls to spring into the grooves 'il and '18, thereby locking the follower 'l5 in the position shown in Figure 4.

It is apparent that the specific illustrations shown above have been given by way of illustration and not by Way of limitation and that the structures above described are subject to wide variation and modification without departing from the scope or intent of the invention, all of which variations and modifications are to be included within the scope of the present invention.

What is claimed is:

1. A magazine unit for cartridges, comprising in combination with a fire-arm magazine having a casing, a follower and a spring engaging said follower for moving the same; a cartridge magazine having a casing detachably connected with the casing of the nre-arm magazine and communicating therewith, a drum situated within the casing of the cartridge magazine and having a plurality of cartridge-containing chambers, said drum having an inner pocket formed therein and situated Close to said fire-arm magazine in the unloaded position of the drum, a spring for actuating said drum, a projection carried by said drum, va stop carried by said casing and engaged by said projection in the unloaded position of said drum, said drum having a plurality of peripheral teeth formed thereon, a pinion meshing with said teeth, a shaft extending through the Casing of the cartridge magazine and carrying said pinion, whereby the drinn-actuating spring may be wound by turning said drum from said unloaded position to a loaded position, said chambers of the drum supplying cartridges successively toward the casing of the fire-arm magazine when the drum is turned by the unwinding of the drum-actuating spring from said loaded position to said unloaded position, means carried by said drum for locking said follower and said spring within said pocket during at least a part of the rotation of said drum, and means situated within and carried by the casing of the cartridge magazine for actuating said locking means to release said follower when said follower is close to the casing of the nre-arm magazine to enable said follower-actuating spring to move said follower into the casing of the fire-arm magazine.

2. A magazine unit for cartridges, comprising in combination with a fire-arm magazine having a casing, a follower and a spring engaging said follower for moving the same; a cartridge magazine having a casing connected with the casing of the fire-arm magazine and communicating therewith, a drum situated within the casing of the cartridge magazine and rotatable from an unloaded position to a loaded position, a spring for rotating said drum from said loaded position to said unloaded position, said drum having cartridge-supporting grooves and an inner pocket formed in said drum and situated close to said fire-arm magazine in the unloaded position of said drum, said cartridge-supporting grooves of the drum supplying cartridges successively toward the casing of the fire-arm magazine when the drum is rotated from said loaded position to said unloaded position, two shafts carried by said drum on Opposite sides of said pocket, pawls rotatable along with said shafts and having ends Iadapted to project into said pocket to lock said follower therein, said follower-actuating spring being situated within said pocket between the bottom thereof and said follower when said follower is locked by said pawls, links having ends iirmly connected with said shafts, a lever carried by said drum and movable from a locked position to an open position and vice versa, said lever having slots formed therein, said links having other ends mounted in said slots, said slots being so disposed that the ends of the pawls project info said pocket when said lever is in its locked position, a stop carried by said drum and engaging said lever When it is in its locked position, a spring having an end engaging said drum andanother end engaging said lever for pressing said lever against said stop, whereby said lever is maintained in its locked position during at least a part of the rotation of said drum, and means situated within and carried by the casing of the cartridge magazine for moving said lever` into said open position when said pocket is close to the casing of the lire-arm magazine to enable said followeractuating spring to move said follower into the casing of the fire-arm magazine.

3. A magazine unit for cartridges, comprising in combination with a re-arm magazine having 'a casing, a follower and a spring engaging said follower for moving the same; a cartridge magazine having a casing connected with the casing of the re-arm magazine and communicating therewith, a drum situated within the casing of the cartridge magazine and rotatable from an unloaded position to a loaded position, a spring for rotating said drum from said loaded position to said unloaded position, said drum having cartridge-supporting means and an inner pocket formed in said drum and situated close to said fire-arm magazine in the unloaded position of said drum, said cartridge-supporting means of the drum supplying cartridges successively toward the casing of the fire-arm magazine when the drum is rotated from said loaded position to said unloaded position, two pawls rotatably mounted in said drum on opposite sides of said pocket and having ends adapted to project into said pocket to lock said follower therein, said follower-actuating spring being situated within said pocket between the bottom thereof and said follower when said follower is locked by said pawls, a lever carried by said drum and movable from a locked position to an open position and vice versa, means for operatively connecting said pawls with lever, whereby the ends of the pawls project into said pocket when said lever is in its locked position, means for maintaining said lever in its locked position during at least a part of the rotation of said drum, a spring carried by the casing of the cartridge magazine, a projection carried by said spring and engaging said lever when said pocket is close to the casing of the fire-arm magazine to cause a movement of said lever into its open position, whereby said follower is released by said pawls to enable said follower-actuating spring to move said follower into the casing of the fire-arm magazine, and a stop carried by said drum and engaging the last-mentioned spring after said follower is released to withdraw said projection from engagement with said lever and thereby cause a return of said lever into its locked position.

4. In a magazine unit, a cartridge magazine comprising a substantially cylindrical casing having a peripheral opening formed therein for the removal of cartridges, a removable cover for covering said casing, an inclined cartridge-raising plate carried by said casing and situated Within said casing adjacent to said opening, a shaft mounted in said casing and said cover, a hollow drum carried by said shaft and having a plurality of radial cartridge-supporting projections spaced from said casing and cartridge-containing grooves formed upon said drum between said projections, a portion of the casing of the cartridge magazine being curved in conformity with an outline of the forward end of a cartridge, a spiral spring situated within said drum and having one end connected to said shaft and another end connected to said drum, a pinion rotatable along with said shaft, a pawl meshing with. said pinion, a spring pressing said pawl against said pinion, a knob rmly connected with an end of said shaft and situated outside of said casing, whereby the tension of said spiral spring may be adjusted by turning said knob, lanother knob removably mounted upon the other end of said shaft and situated outside of said cover, a rib carried by said cover for engaging the cartridges in said grooves, a projection carried by said drum, a stop carried by said casing and engaged by said projection in an unloaded position of said drum, said drum having a plurality of peripheral teeth formed thereon, a pinion meshing with said teeth, and a shaft extending through the casing of the cartridge magazine and carrying the last-mentioned pinion, whereby said spiral spring may be wound by turning said drum from said unloaded position to a loaded position, said projections of the drum supplying cartridges successively toward said opening and said cartridgeraising plate when the drum is turned by the unwinding of said spiral spring from said loaded position to said unloaded position.

OERTEL F. VAN HORN. JOHN D. WHITTAKER.