US2940438A - Magazine gun - Google Patents

Description

R. MERZ MAGAZINE GUN June 14, 1960 2 Sheets-Sheet 1 Filed July 30, 1957 R. A OZ n mm Q m MM .j n F w QN w HI l w AU NN Will @Uilm W@ .nk c R mm 1| NN l s l Z QN Y @Dx vm. vk D* .w AM AAA f /W &\\ km e .111 lll., 71,43

R. MERZ MAGAZINE GUN June 14, 1960 2 Sheets-Sheet 2 Filed July 30 1957 m. um

United States MAGAZINE GUN Rudolf Merz, Rochester, N. assignor to Crosman Arms Company, Inc., Fairport, N. a corporation of New York Filed July 30, 1957, Ser. No. 675,202

16 Claims. (Cl. 124-11) The present invention relates to semi-automatic, gaspowered guns, and more particularly to pellet guns of the type commonly used for target shooting and for shooting small game.

Semi-automatic guns that have been available in the past have usually required some form of movable slide or arm to transfer the foremost piece of ammunition from the magazine to the breech. Loading mechanisms of this type require many moving parts and are therefore costly 4to manufacture. Moreover, such loading mechanisms always present problems in obtaining an eective seal of the breech during ring, and usually, the breech can only be closed by complex mechanical means.

A11 object of the present invention is to provide a magazine mechanism for a gun which is simple and more direct in operation than known gun loading mechanisms.

Another object of thev invention is to provide a magazine mechanism for a gun by which the cartridges or pellets may be fed directly from the magazine into the breech of the gun, without any pickup arm or other mechanical transfer mechanism.

Another object of vthe invention is to provide a gaspowered pellet gun having a magazine adapted to be operated on tiring of the gun to feed a pellet from the magazine into the gun barrel ready for propulsion from the gun the next time the gun lis iired.

Another object of the invention is to provide .a loading mechanism of the character described that can be operated from the propellant gas of the gun.

Another object of the invention is to provide a gasoperated gun in which the gun is not only loaded automatically by mechanism Aoperated by the propellant gas upon firing, but is also automatically cocked.

Still another object of the invention is to provide a gas-powered magazine pellet gun of simple, inexpensive construction, having relatively few moving parts, and having a more rugged construction than has previously been possible.

One embodiment of the invention is illustrated in the drawings. The embodiment shown is a gas-operated pellet-ring pistol. In this embodiment, the gun is formed with a chamber for containing gas under pressure, and with a passage that connects this chamber with the breech end of the bore of the gun barrel. A normally-closed poppet valve is mounted in this passage. The hammer of the gun is mounted to be released when the trigger is pulled, to open the poppet valve to permit flow of the gas under pressure through said passage intothe barrel of the gun at the breech end .thereof to propel a pellet from the gun. p Y

The gun barrel has a port in it midway of its length through which the propellant gas ows, after firing, to eiect movement of a spring-returned piston that operates to cock the hammer, and to operate the loading mechanism to place a new pellet in the breech from the magazine.

The magazine is mounted to pivot about a vertical axis, and is formed with aV bore that holds the pellets 2,940,438 Patented June 14,1960

in columnar, or tandem fashion. The magazine is pivoted by mechanism actuated by the piston to place its bore in communication with the bore of the gun barrel, to permit a pellet to be loaded into the breech of the gun each time the gun is fired.

Details of construction of the illustrated embodiment of the invention can best be understood by consideration of the drawings, together with the detailed description thereof that follows:

In the drawings:

Fig. 1 is a section of a pistol constructed according to one embodiment of the invention taken on the line 1--1 in Fig. 4, looking in the direction of the arrows;

Fig. 2 is a fragmentary rear elevation of the gun;

Fig. 3 is a fragmentary sectional View showing the positions of the hammer, sear, and trigger of the gun, at the limit of forward movement of the hammer, after the trigger has been pulled; Y

Fig. 4v is a plan View of the gun in uncooked, unloaded condition;

Fig. 5 is another plan view, showing the gun during loading, with the magazine block rotated through an angle so the bore of the magazine communicates directly with the bore of the 'gun barrel to load a pellet directly into the bore of the gun;

Fig. 6 is a section taken on the line 6-6 of Fig. 5, looking in the direction ofthe arrows; and l Fig. 7 is a partial side elevation of the gun takenl on the line 7--7 of Fig. 4, parts being broken away, also, for illustration.

Referring now in, detail -to the drawings, the grip or stock of the gun is formed with a chamber 11 (Fig. l) in which a conventional gas cartridge 12 and piercer( 13 therefor are mounted. Chamber 11 is closed by a nut 9 that threads into the lower end of the chamber. An O-ring 10 is interposed between this nut andthe piercer 13; and the piercer is moved into positionl to pierce the normally-sealed cartridge 12 by threading nut 9 inwardly. After the normally-closed end of cartridge 12 has been pierced, leakage of the gas from theV chamberV 11 to atmosphere is prevented by sealing V0,-ring -10 yand screw 9.

The gun body is formed with an elongate cylindrical bore 14 that `extends lengthwise ofthe gun, and that is blind at its front end. Rigidly secured in the bore14 at the rear thereof is a tube or sleeve 19 that is closed at its rear end by a removable plug 15. Plug 15 and tube 19 are secured to the body of the gun by screws', v 63 and 44.

A cup'shaped hammer 16 is reciprocably mounted yin the rear end of the bore of tube 19, with the closed end of the hammer disposed toward the front end ofthe gun. A spring 17 is engaged in the hollow portion of the hammer, and is interposed between the front end of the hammer and the plug 15, constantly to urge the hammer forward in the tube 19. Y

The body of the gun is alsoformed with an elongate channel or slot 18 that extends lengthwise of the gun beneath tube l19 for a part ofthe 'length of this tube. This Achannel or slot 18 communicates along part of its upper side with a slot 25 in the bottom of the tube 19 and with bore 14. A spring-pressed sear 20 is pivotally mounted in the slot 1S on a pin 69 to swing through slit 25 into the bore 14 to engage the front face of the hammer .16, to hold the hammer in cocked position. The sear is constantly urged to operative position -by a coil spring 2.9.

An intermediate sear or rocker arm 21 is pivotally and slidably mounted in chan-nel 18. It is formed with van elongate slot 38 in which its pivot pin 39 is engaged. The intermediate sear 21 is formed with an upstanding protrusion 23 that engages over the front end of the n sear 2l) when the gun is'cocliedll` Thisprotrusion projects into-the path of the hammer 16 to beengaged` bythe hammer, as shown in Fig.Y 3, when the gunY is tired, to`

cushion the terminal forward movement of the hammer u pon The rearend of the intermediate sea-r is .constantly spring-pressed` upwardly/ andv rearwardly by ia spring. 24,thatrisinterposed' between the rear endY of the. 'intermediate sear and an inclined` surface` .that Vis formed inthe body Qf, the gun. Thereris sui'cient space f between the upper farce ofY thev intermediate scar/andtube 12 to permit sliding pivotal movement of the intermediatejsear. Y r Y A'trigger 22 is pivotally mounted bymeans of pin g2',

in Vposition to rock the intermediate sear 23 in a countercloelswise directiomras viewed in Fig; l, Vto depress Ythe sear 20to're1ease the'hammer'l', tol rethel gun. A valve block 26 is mounted in tube 19 and', is held in xed central position, in the bore 14'Y byY tube cpar'sljeeveV Y 31` andan OlringZlthat Vare mounted inY bore 14. Tube '31j seats at its forward end'against a stop 34 which` hasv a angedporton at its front end that is engaged between theA front end of tube 31 and the disc 74;' Tube 31- is held' in place by tube 19 which telescopes overvthe rear end of tube 31. Block 26 is formed with a bore'that is coaxial with theborev 14. The elongate .stem 27 of av poppet valve 2 8V is reciprocably mounted in the bore Y of theblockr26'. A passage 30 is providedthrough the :analogiesY 4 forward.

Av conduit 3.2, @Eigll extendathroush the body 0f the, and.- througb. tbewall of the: tube 31.10- provide Y communication between Vthe chamberrll angl-v theA cham- Y with a duct 4S that is adapted to register, as shown in valve block 26. Y"this passage extends'axially of the'blovck 26, about half-way through the blocleiin axialralignment withits bore, as an annular clearance Varound the stem Valve 28 is provided Ywith a resilient, compressible gasket Yor sealat its rear end to engage against the front fae'of the block 26, over ythepassage 30, when thervalve is closed. A coil spring 49 which isinterposed :between the valve 28 andthe web .35 oftube 31, constantly urges j the valve 2,8 to close position. Y

i 'A cupishaped'piston 33 is Y,mounted for reciprocatio'ny in the tube 31'y between a dome-shaped stop 34 andthe Aweb 35i. A' return spring 36 is, engaged-in, thenhollow partiofjthe piston 33, and'isV interposed' between thezfront Y end of thegpiston andthe, web '35 constantly to urge Y Y-vthe pstonltafthefrlont endzfnthe cylinder. 3.1.` f' AguribarrelV 3T`of conventional type 'is'm'ounted on Y Vthe body withits bore 4d disposed so itsaxisispar- Y :allel' toiheaxisafjthe bote, 1.4.-'.l There. ,iS abort 7e in 'Y :the gun barrel 37 intermediate the ends of. the gn barrel., Y A duct-41, whichY iS formedjin'thebody of theaumbohffneets this Vportwith a portl 76 in the tubel 31 beyondthe lfjorwardjlii'nit of movement ofthe` piston' 33.V

The'breech of' the gun isformed with 'a bore '59' that communicates with andjfthat is aligned with'the bore; 40 .l of the gun barrel at the'rear end ofrsaid bore' 40.V YVA V'slide 42 is mounted to .reciprocate in the breech bore S9 in a s lot 60 l(Fig. 5,) that `extends transversely to the axis of the gun barrel. Ifhe slot Y@communicates with boreY 5,9 across the axis o f said b ,reechbore This slide 42 is adapted to be moved into and out of the bore 59 of the breech. It is Tshaped` in cross-section as s hown inFgs. lfand 6. ItsA ,verticaly leg 73 acts asa stop, as will be describedY further hereinafter. Y

A magazine 43 is mounted on theV rear Vof the gun l body, to pivot about a vertical axis on thev pin 44. Pin

44v threads through a thin-sectioned portionA of the body off the gun, and through the tube 19 into theYY block 1,5.

VAs best-Y shown inFigs. 4 and 5, the front f ace of the Ymagazineblock'isV curved about the vertical axis. ofl theY v '27;eandfit has a` radial extension that is directed upv Y `wardly through the block 2.6.'` i l ber 65 which is` formed 4int\.1ber3g1 between the block 26 and the web 35* of tube 31. The duety 32 conducts gas under pressure from the chamber; 11;, into the chamber 65. At its forward end, the magazine block is formed Fig. 4, with the breech bore 59 to provide communicationY between the valve passage 30` and5 the breech bore 59, when the magazine block 43=is in thefposition shown in Fig. 4. .Y f Y A leaf spring 50 (Fig. 4) is interposedvbetween the .body of the gunandl the magazine 43, constantly to urge the magazine inone directionV to one limit of its pivotal movement, namely,` to theV position shownin Fig. 4. 1 Y Y A lever` 51 (Figs.r 4 and 5;)is pivotallyfrnounted on the upperv surface ofthe magazine block 43. This lever is secured at its rear endI to av pivot pin 52 that is rotatable in block 4 3.A Y,The lever 51 is formedl intermediate its ends witha slot 53. Atjitsfrontend, the lever 51 is pivotally connected lby means ofslot4 66- and pin 67 to the slide 42, to move the slide in fthe guideway 60 as the lever 51 pivots. A pin 54 mounted-in the magazine block 43 engages ina slot 53, to limitfthe angular movement of the lever 51 relative to the magazine 43 While Y allowing some, restricted relative movement between -Y them.

As is apparent from Fig.V V6 the distance between the rear facerof'the leg 73 and the'. front ofthe magazine 43 is just enoughto accommodate onerpelletY I.V When e the chamber 450i the-magazine 43Kis-,Vin` cemmunica-Y Y. 'tion withthebreech bore 59,1the-legg 73 of-'thefslide 42 extends across the breech boreg59naln position, vthe urging ofthe spring--46iforcs one pelletintp thev breech bore -59`-against :the rearsu'rface of legA 73. 'Y 'lheV lateral pivoting lost motionbetween,V the magazine 43 and the Y leverV l'tresultivngv from movementofa pin 54h; the slot 53 `causes-the magazine 43-to`pivotfthe chamberv 45 out of'A communication with thebre'eeh boreV 5 9f-fpu'or 'to or ahead of the movement ofthe vertical; legr'7 3'=` out'V ofthe breech borel 59 Thus, it is apparent that; more than one pelletV isf' prevented fromenteringthegbreech bore 59;Y Y I The undersurface of the Yx'na'gazin'eblockY 43 is milled out to provide a transverse slot 55. A pawl'56 is` mounted for limited pivotal movement inthe slot 55. This pawl is rigidly'secured` to p in'52j. A spring 57 is mounted in the slot- `to engage against the p awl,` to resist movement of the pawl in a-counterclokwise direction as lviewed in Fig. 4. The pawln is formedY with aninclinedcamsurfaceSS'. j

A cooking; rod- 61; is rigidly secured to thepiston 33 toV reciprocate upon reciprocation of the piston. At.' its rear end, the cooking rQd 61v is formed with a stud 64. studjis mountedmto engage a pin`621(Fig. 7)` on the hammer` 16 upon rearward movement of the piston 33. The vcoclging rod Yis mounted to engagethepawl Sti,` to

'rotate the pawl'in,Y a counter-clockwise. direction, as

' of the spring 36, the stud:y 64l'rides onV the camfsurface zineto--itscurved front face, as bestshown in Fig, V6.

The pellet chamber 45 is disposed so that at onfe'ex- 58.7of, the pawl 56 rockingtherpawl 56fa11d the, lever 5,1 clockwiserasviewedinEigA'.

A knob 63 is secured on the cocking rod 61, to permit manual operation of the cooking rod.

To use the gun, a plurality of pellets P are placed in the pellet chamber 45 of the magazine block, in tandem or columnar fashion. The coil spring 46 is then placed behind the last pellet and compressed by threading the plug 47 into the magazine block. Initially, the magazine block will be in the position shown in Fig. 4. To cock the gun for firing the rst time, the knob 63 of the cocking rod 61 is grasped and the rod is pulled manually to the rear. As ythe rod is moved to the rear, the stud 64 engages against the pin 62 that is secured to the hammer 16, to move the hammer to the rear against the resistance of the spring 17. At the same time piston 33 moving with rod 61, compresses spring 36.

As the cooking rod 61 is moved to the rear, the cocking rod 61 also engages against the pawl 56, and rotates the pawl in a counter-clockwise direction, as viewed in Fig. 4, to move the lever 51 counter-clockwise also, as viewed in Fig. 4, until the lower edge o'f slot S3 abuts against pin S4. Then lever 51 may carry magazine 43 with it a slight distance counter-clockwise. As soon as the end of the cooking rod 61 clears the pawl, however, the spring 57 returns the pawl to its normal position, moving the lever 51 to the extent permitted by slot 53, that is, until the upper end (as viewed in Figs. 4 and 5) of the slot 53 abuts against the pin 54.

When the cooking rod 61 is released, the spring 36 moves the piston 33 forward, to its original position. As the cocking rod is moved forward, its rear end rides on the cam surface 58 of the pawl 56, swinging the lever 51 clockwise and moving slide 42 into position, to' close the breech bore 59. At the same time lever 51 acts through pin 54 to swing the magazine block 43 clockwise about its pivot pin 44 against the resistance of the spring Sil. The magazine block is thus forced to rotate clockwise to the position shown in Fig. 5, where the pellet chamber 45 registers with the breech bore 59. The foremost pellet P in the magazine then enters the breech bore 59, as shown in Fig. 6, abutting against the leg 73 of the slide 42.

When the cooking rod 61 has been moved sufficiently far forward so that itclears the pawl 56, the leaf spring expands and rotates the magazine in a counter-clockwise direction, to return it to the position shown in Fig. 4. This leaves the o'ne pellet in the breech bore 59, other pellets being prevented from entering the breech bore S9, first by the leg 73 of slide 42, and then by the curved wall 75 on which the front face of the magazine slides.

Due to the lost motion between the slot 53 and the pin' 54, the slide`42 remains in closed position to close the breech until the pellet chamber 45 has been moved out of communication with the breech bore 59. The pin 54 then bears against the upper side (as viewed in Figs. 4 and 5) of the slot 53, to carry the lever 51 with the maga zine to move the slide 42 to open position out of the breech bore 59.

When the magazine has been returned to the position shown in Fig. 4, the conduit 48 in the magazine is positioned to connect passage 30 (Fig. l) in block 26 with bore 40 of the gun barrel.

The gun is now ready for firing.

When the trigger 22 is pulled, the intermediate sear or rocker arm 21 is rotated in a counter-clockwise direction, to cause the sear 20 to' pivot in a clockwise direction, to release the hammer 16. The compressed spring 17 forces the hammer 16 forward, to move the valve stem 21 and the dog 23 on the intermediate sear 21 forward. The forward movement of the valve stern 21 lifts the valve 28 off its seat, to establish communication between the gas under pressure in the chamber 11 andthe gun barrel, thro'ugh the conduit 32, the chamber 65 Vin the cylinder 31, the passage 30, the conduit 48.` The for- Ward movement .of theintermediate sear 21 causes this [intermediate sear to disengage the sear 20.

Gas under pressure then ows into the gun barrel, and propels the pellet forwardly out through thegun barrel. When the pellet has moved forward past the port 70, the propelling gas ows from the bore of the barrel through the conduit 41, and port 76 into the bore of the cylinder 31, where it acts on the piston 33 and moves the piston to the rear.

As the piston 33 is moved to the rear, the cooking rod 61 is carried to the rear also. The end of the cocking rod engages the stud 62 on the hammer, and forces the hammer to the rear, compressing the hammer spring 17. The scar 20 then returns to locking position with respect to the hammer under urging of the sear spring 29; and the hammer is held in co'cked position. When the trigger is released, the intermediate sear 21 is rotated in a clockwise direction and at the same time is moved to the rear of the gun, by action of the spring 24, to engage the sear.

As the cooking rod is carried to the rear, its rear end engages the pawl 56 and rocks the pawl counter-clockwise, and then rides clear of it as previously described, exactly as when the gun was cocked manually initially. The pawl therefore is rocked clockwise by the spring 57, to the limit of its normal position. Thus, when the return spring 36 expands to force the piston 33 and the cooking rod 61 forward, the end of the cooking rod engages and rides on the cam surface 58 of the pawl. Lever 51 is thus rocked to ro'tate the magazine block 43 in a clockwise direction, in the manner previously described, to load the gun. The vertical leg 73 ofthe T-shaped slide 42 permits the entrance of only one pellet at a time into the breech bore 59.

As before, when the cooking rod 61 rides olf the tip of the pawl 56, spring S0 rocks magazine blo'ck 43 couner-clockwise to bring duct 48 into registry with the bore S9 of the breech, and then pin 54 engages the upper side of slot 33 in lever 51 to rock the lever counter-clockwise to move slide 42 out of the breech bore to its po'sition shown in Fig. 4. Thus, before the slide 42 is moved to withdraw the leg 73 from the bore S9, the magazine is moved away so that the pellets are held in the chamber 45 by the curved guideway 75 while a single pellet is held in the breech bore 59 by the front face of the. magazine. After the cocking rod and piston have completed their forward movements, and after the magazine has returned to its normal position as shown in Fig. 4, the gun is cocked, loaded, and ready again to be fired.

From the preceding it will be seen that magazine block 43 acts not only as a movable magazine to supply pellets directly into the bore of the breech, but also, in elect, as a valve, closing oii. duct 48 from communication with breech bore 59 in the position of Fig. 5, and effecting communication between the duct 48 and bore 59 in the position of Pig. 4.

lt will be noted that the magazine loads directly into the breech, and that no' intermediate transfer arm or slide is required. Furthermore, there are relatively few parts in the loading mechanism, and a construction, that is relatively inexpensive, not likely to get out of order, and easy to maintain, results. Gas power is employed to load and to cock the gun, so that semiautomatic operation is obtained. However, as will be understood by those skilled in the art, by making appropriate changes in the sear mechanism, fully automatic operation would be possible. Other changes of a like nature will occur to tho'se skilled in the art.

While the invention has been described in connection with the construction and operation of a pistol, it will be understood that it may be employed in any type of gasoperated gun, as,'for instance, a rifle.

While the invention has been described in connection with a specific embodiment thereof, then, it will be understood that it is capable of further modification, and this application is intended to cover any variations, uses, or adaptations of the invention following, in general, the

:weones pui nci1 :tlesj of the inventidn and including such departures iwmthe, present disclosure as come within known or cus- I tion` or;V the limitsv of the appended claims. Y Y'Having thus described by invention, what I claim is:

l. In aA maga'zinevgun-a a barrel havingy a breech bore, Y Y.

' a Amagazine having` a chamber for missile storage,rr said mg/Zc, being oscillatabl-y movable about. an axis atV right angles tothe aXis of said barrel Abetween two limitV positionsrsa-id limit positions corresponding to the cocked position and thev loading positions ofthe gun, respectively,

Vsaid chamber inV the loadingposition beingin registry with saidy brech'bore, a high-pressure gas supply source, a

duct in said-magaziney for conducting. gasy from said high lpressure supply'source togsaid` breech boretosupplyV power for firing a missile lfrom the barrel by gas pressure, a valve normally preventingrconnection of said gas Vsuppl-yn with saidduct, a trigger -operableto open saidy valve to connectrsaid supply source to said duct, means operable by iiringthegun tomove said magazine to the loading positionfto bring Asaid chamber into registry with said-V breech Yborefand to'cutroi saidlsupply of gas, andV meansto moveja missile-from said chamber into;V the traveled p ast saidjport, thereby to move said piston, and Vmeans connecting said-piston to said gun cooking mech anismV to actuate saidmechanism'to cook said gun-upon movement, or" saidpiston.V

YA gas-powered gun having a barrel, abreech bore, i

a magazine movable relative to said'v barrel and into reg'- istry with saidbreech bore-, a gasfoperatedreciprocable pistoxnfsaid` gun barrel having a port intermediate its breech bore means operableV by ring the gun to move said magazine in one direction abont its axis', to bring said chamber into registry with said breech bore, means operabie upon registry of said chamber with said breech bore to4 meter-the loading of a single missile intok said breech bore by said spring. and means topivot said mag?- zine in the. opposite direction-about-its axis to move said chamber'out of registry with said breechibore after load-V ing ends,` means ,constantly urging said piston to, one Vlimit position of it's'rieciprocatory movement, meansv connecting said portWith-said piston to move said pistonv against the 'resistanceV ofthe last named' means after said f gun vhas i been-tiredjand amissile-has traveled past said port, means connecting said;' piston tof-said magazine tol move said Vmagazine; intogregistrywith -saidbreech bore upon said movementV of said; piston;v and. means to move a missile from l said magazinejinto the breech `bore* While said magazine'isin registry with said breech-bore.

' in aj'magazine VgunV having-abarrel,'a breech'bore,

magazine havin-ga chamber for missile storage, said magazine'beingrmovable about an axis atan angle to which axis* of: said barrel to. move saidV chamber into registry Wit-hsaid breech-`bore,1said gun barrelk having aV portintermediate itslends; a gas-operable reciprocable piston, means constantly urging 'saidV piston Vto one limit magazine;-to.bringsaidV chamberinto registry with saidY breech b oreupon movement ot saidpiston, and means to move a missile from said magazine into said breech bore whi-lesaidchamber is in registry with-said breech bore. S'A magazine gun-oomprisingra barrel, abreech having-- a bores-a magazine having an eiongate chamber adapted to hold a plurality of missiles forfsaid gun iny colnnmarrelation.Y Vspring meansfmounted in said magazineconstantly to-urge said column of missiles forward in-isaidchamber, said` magazine Ybeing pivotally mounted for-movement aboutl an,Y anis atan-angle to. axis of saidbarreitdmove said chamber. into registry With said 6. Ina magazine gun, a barrel, a breech havingia bore i which is in axial alignment with the bore of said barrel, a magazine having a chamber adapted to hold a` plurality of missiles, a metering member slidable into and,` out' of the breech bore in a direction transverse to the axis of said'breech bore, said metering Vmember being .constructed to `admit-only one. missileat a time Vinto vthe' bore of said-breech, and lost-motion connecting means Yconnecting saidV metering memberv with said magazine whereby upon movement of .said metering member in one direction said metering'member is first moved to metering position and-.thereafter said chamber is brought into registry with the bore of said'breech, and whereby upon subsequent movement of said magazine in the opposite direction said chamber will be moved out of reglstry'with thebore of said breech before said metering member isrnoved outof metering position, and means for moving the foremost missile out of said magazine intothebore of said breechwhen said chamber is in registry withV the bore 0f (said breech.

7. ln a magazine gun as claimed in claim Yt3,v means operative. upon tiringy of said gun for effecting movement of said metering' member in-said one direction and for ctecting subsequent movement of said magazine in said opposite direction.-

8. In a magazine gun as claimed in claim 6, a: sourceV of supply of gas under pressure, a duct for connecting said sourceV otV supply with the bore of said breech, a valve for closing oit dow-of gas from said source through said duct, a trigger,` means operative-upon actuation of said trigger .toopen said. valve to supply gas tol said bores to propel a missile from'the gun, means operative upon tiring of said gun to cock the last-named means and to move said meteringmember in saidvone. direction-'and to` effect, subsequent movement-oi said magazine insaid opposite. directionf V9. A, magazine gun, as claimed in 6in1 Y said magazine hasaforwardA wall which slides on the rear Wall of saidbreech during,movementV of said magazine into and out of chamberfreg'istering position,.whereby said rea-r wall acts to prevent feedrofV other V'xmss'iles into the gun during saidsubseguent movementofY saidimagazine in said oppositeedirection. .y .i

10. Ina magazinev gun, afbarrel-,amagazine having-a chamber'adapted. toY hold a pluralityv of missiles, means for vmoving said magazine Ato move; saidV chamber into and outv of registry. with. said barrelymeans in said magazine for moving the foremost missile out ofsaid chamber into said barrel whenY said. chamberi registers with said barrel,V a duct in said` magazine', saidrduct, being oliset from said= chamber whereby-When said chamber-registers with said `barrel said duct is out of registry With the barrel and vice versa, ajsourceof supply of gaseunder pressure; a passageway including-said duct for connect- Ying *said source. with said barrel to supply; gas for propellingfa missile from said barrel, a valve for closingoi flow off gaslfromesaid sourcev through said passageway, a triggenand means operable by saidftrigger Yfor opening said valve. .-1 f Y il; Inra magazine-gun'as claimed inclaim.10, means operated by. tiring,` of said gun. for moving said magazine to register said chamber and.Y said ductsuccessivelyy with y said barreLand means-alsooperated by tiring of said gun for cooking said trigger.

12. Inga magazine., gun, a. barrel, a breech having', a bore in axial alignment with the bore. of saidibarrel, said aeaefies breech having a slot therein extending transversely of its bore, a metering slide reciprocable in said slot, a magazine mounted for pivotal movement about an axis extending at right angles to the axis of said bores, said magazine having a chamber therein adapted to hold a plurality of missiles, a duct oset from said chamber, a lever mounted for pivotal movement independent of said magazine, means connecting said lever to said slide to move said slide upon movement of said lever, a lost-motion connection for connecting said lever to said magazine, means operable upon tiring of said gun to rock said lever in one direction to first move said metering slide to metering position in the bore of said breech and to then move said magazine to register said chamber with the bore of said breech, means for then moving said magazine in the opposite direction to move said chamber out of and to move said duct into registry with the bore or" said breech, means for moving the foremost missile out of said magazine into the bore of said breech when said chamber registers with the bore of said breech, a source of gas under pressure, a second duct leading from said source, a normally-closed valve controlling connection of the tiret-named duct with said second duct, a trigger, and means actuated by said trigger, when operated, to open said valve to permit gas to iiow from said source to the bore of said breech to propel a missile from said gun.

13. A magazine gun as claimed in claim l2 having a hammer, means for holding the hammer cocked, and means connected to said trigger to disengage said holding means when said trigger is operated, and in which the means for rocking said lever in said one direction and for moving said hammer to cocked position comprises a reciprocable piston, means secured to said piston for rocking said lever in said one direction and for moving said hammer to cocked position upon movement of said piston in one direction and means for supplying gas to said piston upon ring of said gun to effect movement of said piston in its said one direction of movement.

14. In a magazine gun, a barrel, a breech having a bore which aligns with the bore of said barrel, a magazine having an elongate chamber for missile storage, said magazine being movable about an axis at an angle to the axis of said barrel between two limit positions, said chamber in one of said limit positions being in registry with the bore of said breech, a source of gas under pressure, means including a normally closed valve to provide communication between said source of gas and the bore of said breech, a hammer, means for holding said hammer in cocked position, a trigger for releasing said holding means, means for actuating said hammer on release of said holding means to open said valve to ire said gun, a gas-operated reciprocable piston, said gun barrel being formed with a port intermediate its ends, means connecting said port With said reciprocable piston to permit ilow of gas from said barrel to said piston to move said piston in one direction after a missile has traveled past said port in the firing of said gun, means connecting said piston to said magazine to move said magazine to said one limit position to bring said chamber into registry with said breech, means to move a missile from said magazine into said breech while the chamber is in registry therewith, and means connecting said piston to said hammer for returning the hammer to cocked position upon movement of said piston.

15. In a magazine gun, a barrel, a breech having a bore which aligns with the bore of said barrel, and a magazine adapted to contain a plurality of missiles, said magazine having an elongate chamber for missile storage in columnar relation, said magazine being movable about an axis at an angle to the axis of said barrel between two limit positions, said chamber in one of said limit positions being in registry with the bore of said breech, a source of gas under pressure, a duct connected to said source, a normally closed valve, means in said magazine for establishing communication between said duct and the bore of said breech, when said valve is opened, to permit tiow of gas from said source to the bore of said breech to propei a missile from the gun, a hammer, means for holding said hammer in cocked position, a trigger for releasing said holding means, means for actuating said hammer upon release of said holding means to open said valve, a gas-operated reciprocable piston, said gun barrel being formed with a port intermediate its ends, means connecting said port with one side of said reciprocable piston to move said piston in one direction after a missile has traveled past said port in the tiring of said gun, means connecting said piston to said magazine to move said magazine to said one limit position upon movement of said piston in said one direction to bring said chamber into registry with the bore of said breech, means to move a missile from said magazine into the breech While the chamber is registered therewith, and other means connecting said piston to said hammer for returning said hammer to cocked position upon movement of said piston in said one direction, to permit said valve to close.

16. A gas-powered gun having a chamber therein adapted to contain a gas under pressure, a barrel which has a port intermediate its ends, a member having a chamber therein for carrying a missile, means connected to said member to move said member back and forth between two limit positions corresponding, respectively, to the cocked and the loading positions of the gun, the second-named chamber in the loading position of said member being in registry with said barrel to permit transfer of a missile from said second-named chamber to said barrel, means for conducting gas from the first-named chamber to said barrel to re a missile from the barrel by gas pressure, a normally-closed valve controlling connection of said iirst-named chamber with said conducting means, spring-actuated means operative to open said valve, a trigger for locking said spring-actuated means against operation, said trigger being manually operable to release said spring-actuated means to open said valve to connect said rst-named chamber to said conducting means, means connecting said port with the rst-named means and with said spring-actuated means whereby gas from said barrel is operative, after the gun has been fired and' a missile has traveled past said port, to return said spring-actuated means to its locked, cocked position and to cause said member to be moved to loading position, and a spring for constantly urging said member back to its cocked position thereby to return said member to cocked position when the force of the gas from said port has spent itself.

References Cited in the iile of this patent UNITED STATES PATENTS 2,147,003 Kozurik Feb. 14, 1939 2,499,340 Wells Feb. 28, 1950 2,581,505 Wells Jan. 8, 1952 2,594,185 Lefever Apr. 22, 1952 2,713,859 Bradeld July 26, 1955 2,801,624 Feltman Aug. 6, 1957

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