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UNITED STATES PATENT OFFICE. JoHN M, BROWNING, OF OGDEN, UTAH. FiBEARM, 1,143,170. specification of Letters Patent. Patented June 15, 1915. Application filed November 26, 1918. Serial No. 803,192. To all whom, it may concern longitudinal section, the parts within the re Be it known that I, JoHN M. BROWN fNG, ceiver being shown, however, in full. Fig. a citizen of the United States, residing at 9 is a vertical longitudinal section, the parts Ogden, Utah, have invented certain new and within the receiver being shown in section. useful Improvements in Firearms, of which Fig. 10 is a top plan of the trigger-plate and 60 the following is a specification. associated parts, removed from the gun. A principal object of this invention is to Fig. 11 is a vertical longitudinal section of provide a frame or receiver having Solid, the same. Fig. 12 is a fragmentary section inbroken top and sides with a bottom ejec of the hammer, trigger, slide-stop and slide. O tion opening. The magazine is filled Fig. 13 is a vertical transverse section 65 through the ejection opening. The mecha through the receiver at the rear of the nism is designed to operate properly in con breech-block. Fig. 14 is a vertical section nection with a receiver of this character. of the breech-block, showing the extractor The invention also includes a slide mount and firing-pin. Fig. 15 is a bottom plan of 15 ed to reciprocate in the receiver and a tilt the slide. Fig.16 is a section through the 70 ing breech-block supported entirely by the trigger-plate to show the safety-stop. Fig. slide, with means for positively locking the 17 is a transverse section of the safety-stop. breech-block in firing position. There is Fig. 18 is a longitudinal section through the also a carrier actuated by the slide and 20 receiver, with all moving parts removed ex breech-block in a novel manner. ThThere are cept the slide, spring, cartridge-stop, and 75 also provided two cartridge stops to effec slide-bar. Fig. i9 is a horizontal section, tively control the delivery of cartridges from through the receiver with all parts removed the magazine, in proper relation to the move except the two cartridge-stops and a frag ments of the slide, breech-block and carrier. ment of the slide. Fig. 20 is a horizontal longitudinalThe extractor movement has a combined coöperating pivotal with and the section of the receiver showing the end of 80 action of the carrier. There is also a slide the breech-block passing through the front lock to lock the slide in firing position and end of the carrier. Fig. 21 is a vertical, prevent premature return of the slide. longitudinal section showing a shell nearly 30 withdrawn from the chamber. The invention as here shown is especially Referring first to Figs. 1 to 7 inclusive, 85 adapted to shot guns and to a slide action, reference character 5 designates the receiver but many features of the invention may be as a whole. In the front end of this is used in firearms of other classes, and some rigidly and, usually, permanently secured features may be used with other than a slid the magazine 6, on which is slidably mount 35 ing action. - ed the slide-handle 7, connected by means 90 will now describe one exemplifying of slide-bar 8 to the slide within the re structure embodying the invention. ceiver. The front end of the receiver is It is to be understood that the invention is provided with an aperture.9, as better shown capable of embodiment in many different in Fig. 18, to receive the barrel 10, and the 40 forms. - - - rear end of the barrel and the aperture 9 95 The objects and advantages of the inven are provided with coöperating interrupted tion will be further pointed out in connec threads 11. The barrel is also provided tion with this detailed description so far as with a lug 12, in the rear face of which is necessary to enable persons skilled in the is a socket 13. The adjacent face of the lug art to understand the same. is provided with a slot or channel 14, lead 100 Fi gure 1 is a side elevation of a complete. ing from one side of the lug to the socket. gun embodying the invention. Fig. 2 is a Upon the front end of the magazine is side elevation of the barrel detached. Fig. screwed a nut 15, having on its forward end 50 3 is an enlarged detail partly in section of a stud 16. To set up the gun after it has the barrel fastening. Fig. 4 is an addi been taken down the rear end of the barrel 105 tional detail on the section line 4 of Fig. 3. is inserted in receiver socket 9 and given Fig. 5 is a detail on section line 5 of Fig. 8. aquarter-turn, whereupon the rear face. teningFig. 6 isnut. a front Fig. end 7 viewis alongitudinal of the barrel fassec of lug 12 is brought in front of nut 15 and 55 stud 16 passes through the slot 14 of the tion of the magazine. Fig. 8 is a vertical lug and is opposite socket 13. By screw 0. 2. 1,148,170 ing the nut out, the stud is then caused to tion to the slide. At the rear, the breech enter the socket and the barrel is thus block has a lug or hook 37 adapted to enter firmly locked to the frontend of the maga a recess in the slide. The rear face of this zine and also secured at its base in the re. lug constitutes a can coöperating with a 5 ceiver. A very strong and rigid barrel cam 39 on the slide. The bottom 40 of lug 70 support is thus secured. Preferably, also, 3 is adapted to rest upon the rear end 4. near the front (nd of the magazine is se of the slide when the breecl-block is locked, cured a yoke 17 fitting about half way as will appear. The front face 42 of lug around the barrel to further support and 87 constitutes a cam to coöperate with cam ... O locate it in relation to the magazine. In . face 43 of the slide. The faces 39, 40 and 75 this particular embodiment, it will be 42 of. the breech block lig extend the full noticed that the nut 15 also serves as a engagementwidth of the with block coöperating and have aparts full ofwidth the closure for albe forward:end of the maga slide, which provides ample wearing sur zine and has an abutment for the magazine face and ample lateral stability. The upper. 80 spring 18, the rear end of which engages rear end 44 of the breech-block is adapted a Thefollower particular 19, mode of fastening the bar to engage a shoulder 45 in the top of the rel aliiove described is only an exemplifica receiverposition. toThis lock lockingthe breech-block engagement in offiring the tion of different structures that can be 'em breech-block is effected by the slide, as will 85 theployel lug. for12 thenight same be purpose.provided withFor instance,a screw appear. to engage the end of the magazine and vari The carrier. 46 is pivoted in the receiver ots other changes may be made without de upon studs or screws 46 and consists of two parting from the invention. times or spring side pieces. 47, connected 25 The receiver 5, as best understood from only by cross-piece 48 at the rear, as best 90. Figs. 1, 18, and 18, has a solid top 20 and understood from Figs, 8, 9 and 30, The side walls 21, 22. At the bottom, the re bottom 49 of this cross-piece coöperates ceiver is open to provide for the location with the rounded upper rear surface 50 of of the trigger plate 28 at the rear end of the slide. TheO carrier arms also have cams. 30 the receiver, and to provide for the loadin 51 coöperating with cams 52 on the slide. 95. and ejection opening 24 at the front en In certain positions, the breech-block 84 The sides of the trigger passes between the arms of the carrier. The ofplate the are receiver. provided Th with ribse 25 (Figs. 8. front ends of these carrier arms are pro ... and 10), and these ?it into channels 26 in yided with inward projections, best shown 35. the inner side walls of the receiver (Fig. in Fig. 20, and such projections have slant 00 18)." The trigger plate is slid into the re ing faces a which coöperate with cams 54 ceiver from the rear and secured by screws on the breech-block. As the breech-block 27. The hammer and trigger mechanism passes forward between the arms of the cir carried by the trigger plate will be later lier, these arms spring outward to permit 4) described. In the inner walls of the re such passage of the block, and to, provide 105 ceiver are two channels 28, in which fit the for his outward movement of the arms the sides of the slide 29. Slide-bar 8 passes receiver is provided with recesses 55, oppo through the front wall of the receiver and site the arms when they are in approxi lies in one of these slots 28. A recess 30 is mately horizontal position. The upper in provided near the front end of the slide ner faces of the carrier arms are slightly 10 to receive the rear end of the slide-bar, and beveled at the points 56, and the lower inner these two parts are detachably connected . faces of the arms are similarly beveled at by a transverse pin 81 mounted in the slide. 57. The top of the receiver, to the rear of The outer end of this pin engages a hole in the barrel, is provided with a guide or, rib 50 the slide-bar, as best shown in Figs. 15 and 58 to engage the shell-head during part of 15 18. A central portion of the pin is also its movement, as will be described. After exposed at the bottom of the slide and the the shell-head leaves the rib it. engages the pin is here provided with an annular groove carrier arms and the retarding, wedging 32 engaged by the head of screw 33. This effect thus exerted by the arms upon the 5 screw is exposed through the ciector open upper edge of the shell-head in connection 20 with the pull of the extractor, as will be slightlying when withdrawing the slide theis screwforward, and pushingand by more fully described, assists in ejecting the pin 31 inward its end is withdrawn from shell. the slide-bar to disconnect the slide. . . . . There are provided to control the move. (; ) Breech-block 34 rests on top of the slide ment of cartridges from the magazine two 125 and is supported thereby. At the front stops, which will be designated, simply for (nd the upper face of the slide has a shallow PE of identification, as a spring channel 35 in which fits: a lug. 36 of the stop ositive-stop. The positive breech-block, providing a lateral guide for stop-bar 59 is located in a channel 60 in the the front end of the breech-block in rela . right wall of the receiver, is pivoted at 61, 30 1,148,170 3. and at its forward end the bar carries the zontal position, as shown in Fig. 8, with the inwardly projecting stop 62. This stop front ends of its arms slightly behind cams moves up and down in its channel slightly 54 of the breech-block. The positive car forward of the shell-heads when they rest tridge stop 62 is held down out of the way against the spring-stop, or in the position of the cartridges in the magazine by cam 63 70 shown in Fig. 19. To operate this stop its engaging the underside of the slide. In this bar 59 carries near the forward end a cam closed position of the slide and breech-block, 63 projecting upward into the path of the the breech-block is positively locked by slide when the slide is retracted, and near member 41 of the slide lying below lug 37 O its rear end the bar carries a cam 64 simi of the breech-block and thus holding the up 73 larly projecting into the path of the slide per rear end of the breech-block in engage when the slide is in closed position. In the ment with shoulder 45 in the receiver. In other wall of the receiver is the spring-stop loading, the first rearward movement of the bar 65 located in a channel 66, pivoted at 67 slide brings member 41 of the slide away 15 and carrying at its forward end the in from under lug 37 and permits the rear end 80 wardly-curved stop proper 68, engaging the of the breech-block to be positively pulled shell-head in the position shown in Fig. 19. down by cam-face 43 of the slide engaging A spring 69 urges the stop to engaged posi face 42 of lug 37. About the same time, the tion. At its rear end the stop-bar 65 carries front ends of the carrier-arms 47 engage 20 a cam 70 coöperating with a cam-lug 71 on cams 54 of the breech-block and the front 85 the slide. Fig. 19, which is a section in a end of the carrier is thrown up. The car horizontal plane looking down, does not rier stays in this position until the slide show the slide but shows the cam-lug 71 approaches the rear end of its stroke and projecting downward from the slide to en then member 50 of the slide strikes cross 25 gage cam 70. This lug also clearly appears piece 49 of the carrier, raising it and throw 90 in its proper position on the slide in Figs. ing the front ends of the carrier-arms down 8 and 15. to the position shown in Fig. 9. Some time The breech-block is longitudinally slotted, before the slide reaches the rear end of its and in this slot (2 is located the extractor stroke, it engages positive-stop-cam 64, and 30 73. The rear end of the extractor is slotted raises the positive-stop 62 into the path of 95 to slidably and pivotally engage pin 74. the second cartridge in the magazine. The extractor hook 75 projects through a Some time after this, cam-lug 71 on the slide channel in lug 36 of the breech-block. The engages cam 70 of the spring cartridge stop, extractor is urged upward by wire-spring and just as the slide is at the limit of its 35 76 (Fig. 14) coiled around pivot 74 and rearward movement the spring-stop is with 100 having a short end 77 resting on the bottom drawn from the first cartridge in the maga of breech-block channel 72, and a long end zine and the magazine-spring snaps this 78, the end of which is slightly curved to cartridge onto the arms of the carrier. The ward the center of the breech-block so that second cartridge in the magazine moves back it may be sprung into a groove. 79 in one until its head engages the positive-stop. 105 side of the extractor-piece 73, and when so Forward movement of the slide then causes inserted will retain itself in position. slide-cams 52 engaging carrier-cams 51 to The firing-pin 80 is located in a hole 81 in quickly throw up the front end of the car the breech-block and passes through an rier, elevating the cartridge into line with 4. 5 aperture 82 in the extractor-piece. The rear the chamber in front of the breech-block. 10 end of the firing-pin is enlarged and a At about the same time the spring cartridge spring 83 compressed between this enlarge stop is released and moves to its active po ment and the breech-block urges the pin sition in relation to the magazine. Further rearward. The firing-pin is held in by movement of the slide causes the breech 50 transverse-pin 84 engaging a slot 85 in the block, engaging the rear end of the car 5 enlarged rear end of the firing-pin. tridge, to push the cartridge into the cham The operations of filling the magazine, ber. During this forward movement of the loading and ejecting shells may now be de breech-block it lies between the carrier arms. scribed: The magazine is filled through the They are forced into the channels 55 to al 55 ejection opening 24 when the slide and low the front end of the breech-block to 23 breech-block are in forward position. Each pass, and as soon as cams 54 pass the front cartridge inserted into the magazine is held ends of the carrier-arms the carrier-arms by the spring-stop 68, which springs in be Snap in behind the cams. Toward the end hind the shell. The breech-blockis tilted up of the forward movement of the slide it en 80 at its rear end so that it engages shoulder gages positive-stop-cam 63 and depresses the 45 in the receiver and is positively locked in positive-stop 62, releasing the cartridge firing position. It is so held by upper rear which is now first in the magazine, and the face 41 of the slide resting under bot cartridge thereupon moves slightly to the tom face 40 of the breech-block-lug 37. The rear until it engages the spring-stop. The f carrier is free and lies in substantially hori final movement of the slide causes its cam

4. 1,148,170 39, coöperating with cam 38 on the breech face of strut 88. The spring is flexed and block, to elevate the rear end of the breech retained in position by a pin 107. The stop block to again engage shoulder 45 in the re piece 9 is also provided with a weak spring ceiver, and thereafter face 41 of the slide ,109 which ordinarily holds slide-stop 100 in comes under the bottom surface 40 of the active position. The strong spring 104 be 70 breech-block-lug and positively locks the comes effective to overcome the effect of the breech-block in firing position, as shown in weak spring when the hammer is released Fig. 8. In pushing the cartridge into the for firing. Thereupon, cam 106 of strut 88 chamber, extractor 75 Snaps into engagement engages the overlying end of spring 104 and with the shell base. The extractor is then in urges slide-stop 100 down with sufficient 75 0 energy to overcome the effect of the weak block,rearward as positionshown inin Fig.relation 9. toAfter the breechfiring, spring, unless, before the cartridge actually when the slide is movedback, the parts op fires, the slide is improperly urged back erate as before, but in this case the extractor ward, as will be explained. The stop piece 5 pulls back the fired shell. During the first .97 also has a downward finger projection 97 80 part of its backward movement, the upper exposed at the front of the trigger-guard. edge of the shell-base slides under rib or This permits the stop to be easily manipu guide 58 in the receiver. After a short rear lated for unlocking the breech without fir ward movement, the upper edge of the shell ing the gun. 20 head engages the beveled lower surfaces 57 In firing position, when the breech-block 85 of the carrier-arms, which are now in ele is locked in the position shown in Fig. 8, the wated position. These portions of the car hammer rests against the rear face of the rier arms force the head of the shell down breech-block, and also against the rear end and exert a sort of wedging effect upon the of the slide, so that at the first rearward 25 shell head as it moves toward the rear. The movement of the slide the hammer is with 94) top of the shell is thus retarded while the drawn from engagement with the breech bottom is pulled back by the extractor, and block and the firing pin, and cannot again as soon as the front end of the shell leaves come into contact with the firing pin until the chamber the shell is snapped down and the breech-block is again locked in firing 30 ejected through the opening 24. The quick position. Rearward movement of the slide 95 downward movement of the carrier occur depresses the hammer, as clearly under ring at about the same time assists in eject stood from Fig. 9, until the trigger exten ing the shell. A new cartridge is thrown sion 95 engages behind the notch 96. The upon the carrier, as above described, and the cocking of the hammer also depresses it suffi 35 actions may be repeated until it is necessary ciently to cause the tooth 99 to engage the 00 to refill the magazine, sear notch 98 of the slide-stop, which may The hammer 86 is pivoted at 87 in the be considered, in a sense, a sear, and when trigger-plate, and a hammer-strut 88 is piv the hammer tooth 99 engages this sear-notch oted to the hammer at 89. The trigger-plate the trigger-notch 96 is slightly in advance 40 is bored from the rear, and in this bore is of the end of the trigger extension 95, as 05 main spring 90 secured in position by pin clearly shown in Fig.11. In the ordinary 91. The spring has a follower 92, and the use of the arm, just before the slide reaches rear end of strut 88 rests in a slight depres its foremost position, its cam 103, as shown sion in the forward face of this follower. in Fig. 12, depresses the front end of the 45 The trigger 93 is pivoted in the trigger slide-stop, releasing tooth 99 from sear-notch 0 plate at 94, and the forward extension 95 of -98. Thereupon, the hammer springs up the trigger engages trigger-notch or cock slightly until trigger-notch 96 engages the notch 96 on the hammer. Pivoted also on end of trigger:extension 95. The final move the pin 94 is a piece 97, which performs sev ment of the slide brings the rear end of lug eral functions, but may be identified as a 101 in front of stop 100, and thereupon 5 slide lock. This has a sear notch 98 coöper under the influence of spring 109 the stop ating with a lug or tooth 99 on the hammer. springs up behind the slide and positively At the forward end, piece. 97 has a slide locks it in firing position, and the shooter lock or stop 100 engaging behind a shoulder is thus protected in case of a hang-fire, be 55 101 at the rear end of the slide. Just for cause if he attempts to pull back the slide 120 ward of this shoulder the slide has a groove while pulling the trigger and before the 102 to accommodate stop 100, and the rear cartridge explodes, the rearward pressure of end of this groove is formed into a cam 103 the slide upon stop 100 will hold the stop in to depress the stop just before the slide engaged position, and prevent the slide from 60 reaches its foremost position. The slide lock moving back, although at the same time the 125 is provided with a strong. Spring,104, one stop is urged to move to inactive position by end of which is inserted in a hole in the spring 104, which has been tensed by cam stop. The other end of this spring lies over 106 as the hammer moved up. But as soon the rear end 105 of the stop-piece and ex as the cartridge is fired, the recoil of the 65 tends above a cam 106 formed on the upper gun will remove the pressure exerted against 3 1,143,170 the stop and the stop will drop out of the ceiver and having arms between which the way of the slide by the action of the breech-block is adapted to pass, means car spring 104. ried by the breech-block and slide for rais When the slide and breech-block are in ing and lowering the carrier, and means to proper firing position the gun may be fired permit the block to pass between the carrier in the ordinary, way by pulling the trigger, arms in its forward movement. 70 releasing extension 95 from notch 96, and 5. In a firearm, the combination of a re thereupon the main spring will act on strut ceiver, a barrel, and a magazine communi 88 to strike the hammer forcibly against the cating with the receiver, a slide, a breech O firing pin. The gun may also be fired by block supported upon the slide and movable pulling the trigger during the forward in relation thereto, a carrier pivoted in the 75 movement of the slide. This will hold the receiver and having arms at the sides of the trigger-extension free from the trigger receiver, and means carried by the slide and notch, and the hammer will then be released breech-block for operating the carrier. 15 for firing by the action of the cam 103 on 6. In a firearm, the combination of a re the slide, depressing the stop 100 and re ceiver having solid top and sides and a bot leasing sear-notch 98 fromhammer-tooth 99. ton-ejection opening, a barrel, a magazine A trigger safety-stop is provided, con communicating with the receiver near the sisting of a stop-pin 110, mounted in a trans bottom, a slide within the receiver, a breech 20 verse bore 111 in the trigger-plate to the block supported upon the slide by means of rear of the trigger. This pin has a rib 112 wide lateral surfaces, and a carrier pivoted 8. engaging a slot in the trigger-plate to pre rearwardly in the receiver and having arms vent rotation of the pin. A spring plunger at the sides of the receiver, means on the 113 is provided to engage a notch in the pin. breech-block to elevate the front ends of said 25 and hold it in safety position, and also by arms, when the breech-block moves rear frictional engagement with the pin holds it. wardly, and means by which the breech 90 in firing position with sufficient firmness, block passes between said arms in moving The pin has a slot 114 which accommodates forward...... trigger-lug 115 when in firing position, but 7. In a firearm, the combination of a re 80 when in safety position this trigger-lock is ceiver having solid top and sides and a bot 95 out of register with the slot and the trigger tom-ejection opening, a barrel, a magazine, is prevented from moving. a reciprocating slide, a breech-block sup I claim:- ported thereon and moving in relation there 85 1. In a firearm, the combination of a re to a carrier pivoted rearwardly in the re ceiver having a socket provided with inter ceiver and having spring arms adjacent to 00 rupted threads, a magazine rigidly secured the side walls of the receiver, means carried to the receiver, a barrel having interrupted by the breech-block to raise the front end threads to engage the receiver socket by ro of the carrier in the early rearward move tative movement, a nut screwed upon the ment of the breech-block, means by which 40 forward end of the magazine and provided. the slide causes the carrier arms to be de with a stud, and a lug secured to the barrel 05 and having a slot to admit the stud and pressed at the rear end of the slide move limit rotative movement of the barrel, and ment, and means by which the slide causes a socket to receive the stud and firmly lock the carrier arms to be raised in the early 45 forward movement of the slide. the barrel to the magazine and receiver. 8. In a firearm, the combination of a re 10 ... 2. In a firearm, the combination of a re ceiver having solid top and sides and a bot ceiver, a barrel detachably engaging the re tom-ejection opening, a barrel, a magazine, ceiver, a lug on the barrel, a tubular maga a reciprocating slide, a breech-block Sup 50 zine rigidly fixed to the receiver, a spring ported thereon and moving in relation there within the magazine and a nut Screwed upon to, a carrier pivoted rearwardly in the re l15 the front end of the magazine to engage said ceiver and having spring arms adjacent to lug and lock the barrel, said nut also serv ing as an abutment for said spring. the side walls of the receiver, means carried 3. In a firearm, the combination of a re by the breech-block to raise the front end of 55 ceiver, a, reciprocating slide therein, a the carrier in the early rearward movement breech-block supported thereon, a carrier of the breech-block, means by which the 120 having arms, one located at each side of slide causes the carrier arms to be depressed the breech-block, and means carried by the at the rear end of the slide movement, means breech-block and slide for actuating the car by which the slide causes the carrier arms to 60 rier. be raised in the early forward movement of the slide, and means for permitting the 25 4. In a firearm, the combination of a re breech-block to pass between the carrier ceiver, a reciprocating slide therein, a arms toward the end of its forward move breech-block supported on the slide and ment. having wide lateral slide-engaging faces, a . tis 9. In a firearm, the combination of a re carrier movably mounted within the re ceiver, a barrel, a magazine, a slide, a 130

6 il48,170 breech-block, a carrier, and two cartridge cartridge. to the chamber, and, means by stops, one actuated by the slide near each which the breech-block passes between the end of the slide movement, and the other carrier arms in its forward movement, actuated by the slide only near the end of 14. In a firearm, the combination of a re 5 its rearward movement...... ceiver, a barrel, a magazine, a slide, a 70 10. In a firearm, the combination of a re-breech-block thereon, a carrier pivoted near ceiver, a barrel and magazine, a slide, a the rear of the receiver and having arms breech-block and a carrier, a positive car- at the sides thereof, said arms having con tridge stop pivoted at one side of the re- verging portions, a shell-guiding surface in 10 ceiver, means by which rearward movement the receiver rearward of the chamber, an 75 of the slide moves said stop to active posi- extractor carried by the breech-block, means tion and forward movement of sail slide on the breech-block to elevate the front ends movescartridge said stop stop engaging to inactive the position, cartridges another in a heldof the during carrier its rearwardarms whereby movement the betweenshell is 15 slightly different position, and means by the extractor and the bottoms of said arms, 80 which rearward movement of the slide means carried by the slide to move the car moves said stop to inactive position. Lic arms down to eject the shell, cartridge 11. In a firearm, the combination of a re- stops coöperating with the slide to deliver a ceiver, a barrel, a magazine, a reciprocating fresh cartridge above the carrier arms, 20 slide, a breech-block thereon, a carrier hav- means carried by the slide to elevate said 85 ing arms at the sides of the receiver, means arms to present the cartridge to the cham for withdrawing the shell from the barrel ber, and means by which the breech-block with its upper side in engagement with the passes between the carrier arms in its for carrier, means for moving the carrier down ward movement, 25 to eject the shell, means for placing a fresh 15. In a firearm, the combination of a re-90 cartridge above the carrier, means for cle- ceiver, a slide, a carrier, a breech-block, a . vating the carrier, arms carrying the car- firing pin therein, an extractor-piece having tridge in line with the chamber, and means an extractor-hook projecting at the lower for permitting the breech-block to pass be- front face of the brecch-block, said piece 30 tween the carrier arms in placing the car- having, slot engaging a pivot pin in the 95 tridge in the chamber. breech-block above the firin pin, said ex 12. In a firearm, the combination of a re- tractor-piece being aperture to accommo ceiver, a barrel, a magazine, a slide, a date the firing pin. . . . breech-block thereon, a carrier pivoted near 16, in a firearm, the combination of a re the rear of the receiver and having arms at ceiver, a slide, a carrier, a breech-block, a 100 35 the sides thereof, an extractor carried by firing pin therein, an extractor-piece hav the breech-block, means on the breech-block ing an extractor-hook projecting at the to elevate the front ends of the carrier arms lower front face of the breech-block, said whereby the shell is held during its rear-piece having a slot engaging a pivot pin in 40 ward movement between the extractor and the breech-block above the firing pin, an ex- 105 the bottoms of said arms, means carried by tractor-spring coiled about said pin and hav the slide to move the carrier arms down to ing an end engaging against the breech eject the shell, cartridge stops coöperating block, and a longer, incurved end engaging with the slide to deliver a fresh cartridge the curve in said extractor-piece. 45 above the carrier arms, means carried by the 17. In a firearm, the combination of a re- 110 slide to elevate said arms to present the car- ceiver, a slide, a breech-block, a carrier hav tridge to the chamber, and means by which ling arms at the sides of the receiver, the , the breech-block passes between the carrier receiver being provided with a botton ejec arms in its forward movement. tion-opening, the receiver walls being re 50 13. In a firearm, the combination of a 're- cessed to permit passage of the head of the 115 ceiver', a barrel, a magazine, a slide, a breech-block between the front ends of the breech-block thereon, a carrier pivoted near carrier during the forward movement of the the rear of the receiver and having arms at slide. the sides thereof, said arms having con- 18. In a firearm, the combination of a re 55 verging portions, an extractor carried by ceiver, a slide, a breech-block, a carrier, a 120 the breech-block, means on the breech block trigger-plate, a hammer pivoted therein, a to elevate the front ends of the carrier arms spring-operated strut connected with the whereby the shell is held during its rear- hammer, a slide lock to coöperate with the ward movement between the extractor and slide, and means actuated by said strut to 60 the bottons of said arms, means carried by operate the slide lock. 25 the slide to move the carrier arms down to 19. In a firearm, the combination of a re eject the shell, cartridge stops coöperating ceiver, a slide, a breech-block, a carrier, a with the slide to deliver a fresh cartridge trigger-plate, a hammer pivoted therein, a aboveslide theto elevatecarrier arms,said armsmeans' to carried present by thethe strutactuating pivoted the tostrut, the hammer,a slide lock a main to engagespring 180

1,143,170 7 the slide, a cam on said strut, and a spring notch, a slide lock piece having a sear-notch, actuated by the cam to urge the slide lock to. a tooth on the hammer to engage said notch, disengaged position. said sear-notch and tooth being placed so 20. In a firearm, the combination of a re that when in engagement there is clearance 30 ceiver, a slide, a breech-block, a carrier, a between the trigger and its notch, and trigger-plate, a hammer pivoted therein, a springs for actuating the slide lock piece, a strut pivoted to the hammer, a main spring finger-piece extending downwardly from the actuating the strut, a slide lock to engage slide lock piece for releasing the slide in the slide, a cam on said strut, a spring actu manipulating the arm. 35 ated by the cam to urge the slide lock to dis 23. In a firearm, the combination of a 10 engaged position, a spring fastened to the receiver, a slide, a trigger-plate, a hammer slide lock and having a part turned in to thereon having a trigger-notch, a trigger engage said cam. having an extension to engage said trigger 21. In a firearm, the combination of a re notch, a slide lock piece having a sear-notch, 40 5 ceiver, a magazine, a slide handle thereon, a a tooth on the hammer to engage said notch, slide within the receiver, a slide bar con said sear-notch and tooth being placed so nected to the handle and entering the re that when in engagement there is clearance ceiver, a pin mounted in the slide for lateral between the trigger and its notch, and movement and adapted to engage a hole in springs for actuating the slide lock piece, a 45 20 the slide bar, said pin being exposed at a slide stop member carried by said slide-lock point below the slide, and means for fasten piece, and a can carried by the slide to ing the pin in engagement with the slide bar. actuate said member. 22. In a firearm, the combination of a re JOHN M. BROWNING.. ceiver, a slide, a trigger-plate, a hammer Witnesses: 25 thrreon having a trigger-notch, a trigger W. A. BRowNING, having an extension to engage said trigger M. A. WooD.