US492864A

US492864A - dxnsmore

Info

Publication number: US492864A
Authority: US
Publication date: 1893-03-07
Anticipated expiration: 1910-03-07

Description

(No Model.) 4 Sheets-Sheet 2. R. DINSMORE.

MAGAZINE GUN.

Patented'Mar. '7, 1893.

l(No Model.) 4 Sheets-Sheet 8.

' R. DINSMGRE.

MAGAZINE GUN.

No. 492,864. PatentedfMar. '7, 1893.

zys,

4 Sheets-Sheet 4.

R. DINSMURB.

(No Model.)

MAGAZINE GUN.

No. 492,864. Patented Mar. '7, 1893.

Y UNITED STATES PATENT OFFICE.

ROIERT DINSMORE, OF lYEsTON, WEST V'RGINIA, SSIGNOR OF ONEIIALF TO ADOL/PII GREENSTEIN, OF SAME BLACE.

MAGAZINE-GUN.

SPECIFICATION forming part. of Letters Patent No. 492,864, dated March '7, 1893.

Application filed July 13, 1892. Serial No. 439.897. (No `inodel.)

To all whom it may concern:

Be it known that I, ROBERT DixsnoRE, a citizen of the United States, residing at Weston, in the county of Lewis and State of West Virginia, have invented a new and useful Magazine-Gun, of which the following is a specification.

)Iy invention relates to magazine guns, and the objects and advantages .of the invention, together with the novel features thereof, will hereinafter appear and be particularly pointed ont in the claims.

Referring` to the drawings:-Figure 1 is a side elevation of a gun embodying my invention. Fig. isa. 'central longitudinal section through the receiver of the gun, the parts bed ing in the position they occupy when the gun is employed as single acting and when the plunger is withdrawn and engaged bythe sear andprevious to the insertion of the cartridge in the barrel. Fig. 3 isa detail in perspective of the carrier block and the lever for operating the same. Fig. 4 is a detail in perspective of the locking block. Fig. 5 is a view similar to Fig. 2 viewing the opposite side, theparts being in the positions they 0ccupy when the plunger is engaged by the seal' and the bolt. advanced to force the cartridge in the barrel, or in other words, the piece is ready for firing. Fig. 6 is a detail plan of a portion of the receiverillustrating the switch for converting the gun from single to double acting. Fig. 7 is alongitudinalsection of the switch in detail. Fig. 8 is a detail in perspective of the latch for supporting the locking-block. Figfrt) is an elevation, one wall of the receiver being broken away and parts of the mechanism illustrated in section, the parts of the lock being illustrated in the p0- sitions they occupy after the plunger has been retracted and engaged by the Sear and the bolt advanced to insert the cartridge but before the bolt hasbeen locked in its advanced position, the gun also being adapted for use as a double acting gun. Fig. 10 is a transverse section on the line 10-10 of Fig. 9. Fig. 11 is an elevation of a portion ofthe receiver, the wall of which is broken away illustrating the parts in the positions they occupy when in the act of ejecting a. shell. Fig. 12

is a longitudinal section of a modified construction of gun, the same being adapted for the discharge of shot, the parts being in the positions they occupy when in the act of introducing aloaded shell into the barrel. Fig. 13 is a similar view to Fig. 1:2 showing the 'parts ready for firing. Fig. 14 is a, detail in perspective of the breech-bolt. Fig. l5 is a transverse section on the line 15--15 of Fig. 12.

Like numerals of reference indicate like parts in all the figures of the drawings.

1 designates the fore-arm of the gun, 2 the stock, 3 the receiver, 4 the front triggerguard, 5 the rear trigger-guard, 6 the barrel, 65 and 7 themagazine.

The receiver is formed in halves, as is usual,

.and secured together at proper points, the

upper side of the receiver being provided from a point opposite the breech of the bar- 7o rel to near its middle'with an opening 8, th'e opposite edges of which, as best shown in Fig. 10, are provided with grooves 11, in which a sliding plate or cover 12 is located, the under side of said cover at its front end being provided with adepending lug 13 having a cavity 1t. The opposite' halves or sections of the receiver near their upper edges are provided with half circular grooves 15, which grooves receive forl reciprocation a bolt 16. 8o This bolt is hollow or provided with a cylindrical chamber or bore 17, the front end of which is rounded or coucaved at 18, and the rear end of the bolt has a reduced circular' opening 19. Mounted for reciprocation in the reduced opening 19 of the bolt is a plunger 20, whose rear end extends into a cavity or reduced bore 21 formed in the opposite halves of the receiver and is provided with an annular reduction forming a shoulder 22. 9o The advanced end of the plunger is provided with an enlarged convexed head :23, the convexity of which agrees with the concaved inner end 18 ofthe bolt. Extending from the front of the bolt is a firing-pin 2t, which is 95 smaller in diameter than the boltand is provided at its front end with a tiring point 25. Above and below the tiring-pin 24

spring extractors

26 and 27 respectively are secured, the upper extractor being provided near its 1o :is forwardly-disposed and adapted to engage `with the/rim of a cartridge. The lower ex; tractor is left plain, as shown, and terminates h slight distance in advance of the firing-pin 24. Formed upon the under sd e and at the front end of the bolt 16 is a chamfered lug 30, and in rear of the same is alug 31 having an `elongated slot or opening 32, the purpose of which wilLbe hereinafter described.

designates the usual carrier-block well, lor opening which is immediately in advance bt" the bore of the receiver, and at the rear lend of the barrel 6. Mounted for vertical reciprocation in the carrier-block well, or opening is the carrier-block 34, shown in detail in Fig. 3. This carrier-block is of the usual construction comprising the longitudiinal bore or cartridge-passage 35 above which the walls of the block are contracted, and below said cartridge-passage Iis provided with `an elongated slot 36. The slot 36 is engaged luy the inwardly-turned end 37 of the longer branch 38 of abell-cranked lever, the shorter branch 39 of said leverv also having an inwardly-bent end 40. This bell-crank lever at the ,juncture of the two branches has a boltopening or perforation 41, and between the branches has a convexed edge 42, which is eccentric with relation to the opening 41. A bolt or screw 43 serves to pivot the bell-crank `to the left wall of the receiver, as best shown `in Fig. 5 of the drawings. A

Upon atransverse bolt 44 is pivoted the finger-lever 45, the lower Vextremity of which is preferably shaped to form a finger-hold 46. The leveris provided upon its upper side with a slot forming opposite ears 47 having opposite` bearing openings, and in these bearing openings loosely rest opposite trunnions 48, shown by dotted lines in Figs. 2 and 5, which are formed at the extremity of a link 1.49, whose front end is slotted andv is pivoted `at to the spring 51. This spring -51 at its `trout end is curved to form a bearing-eye 52, and the same rests in a cavity53, as shown in Fig. 5. l

A screw 54 passes into the right wall of the :receiver and through an eye 55 formed at the rear end of a cartridge retaining-arm 56 located below and some distance in rearof the inagazine, 7. This arm is provided upon its `upper side near its front end with an upnardlydsposed linger 57, which when the arm is raised by alight spring 58 interposed between the under side of ythe arm and the lower side of the receiver is elevated into the `path or line of cartridges within the magazine and into the path of the carrier block, `which latter it will be observed, is recessed upon its under side at 58 so as to embrace the arm.

1 5f) designates a spring (see Figs. 5 and 9), and the same is secured at its front end by means of a screw 60 to the left wallof the receiver. This spring is located below the hollow bolt and at its rear end is provided with or chamfered at 62, that rests upon the convexcd or curved su rface 42 of the bell cranked lever. When the bell crank lever atits front end connected with the carrier block is lowered the beveled head 61, by reason of the eccentricity of the lever tends to re-elevate said lever bearing as it does against the convexed portion 42 thereof adjacent to the arm or branch 39 of said lever, and when said lever is elevated at its front end and the carrierblock raised, the head of the spring bears against the convexed portion 42 adjacentto the arm 38 and serves to aid in depressing said arm at a subsequentlowering of the carrier-block.

adjacent to the carrier-block well, or opening, a pair of transverse blocks 63 is located, one of which is provided with a stop lug 64, said blocks being arranged a slight distance apart so as to form an intermediate recess 6'5. In this recess there is mounted for vertical reciprocation a pin 66, whose upper endV is rounded at 67, and when elevated it lies in the path of the lug 30, before mentioned as being formed upon the under side of the hollow bolt 16. The rear face of the pin is recessed at 68, the same being somewhatlonger than the width of the stop-lug 64, and said pin is therefore permitted to reciprocate vertic-ally until its movements are arrested by the contactof said lug with the end walls of the recess. The lower end of the pin rests upon the upper side of the arm 56 so that when the pin is depressed bya forward movement of the hollow bolt the arm is forced downwardly against the tension of its spring 58, and thus the shoulder 57 is removed from behind the line of cartridgesin the magazine.

69 designates an arm which has formed at its rear end a lockingfbl'ock 70. The arm 69,

cated at 71, and embraces the slotted lug 31 upon the under side of the hollow bolt 16. A pin 72 passes through the bifurcations and through the slot in the lug ,whereby the arm is loosely and pivotally connected to the said bolt. The rear end of the bolt, as before stated, terminates in a locking-block 70, and the same has its front side or face inclined at 73 to conform with the inclined rear end 74 of the hollow bolt 16. At its rear end the block is bifrircated and provided with perforations 75, which loosely receive the free end of a link 76, which is pivotally connected by transverse bolts 77 to said bifurcations. The

rear end of the link is pivotally connected by a bolt 78 to the receiver.

The left side of the receiver is provided with a V-shaped recess 79 opposite the link 76 and a head 61, the lower side of which is cut away Between the two sections of the receiver,-

as shown in Fig. 4, has its front end bifnrf IOO IIO

in the bottom of the same a screw is passed through and serves to pivotally support a locking-lever 81. The upper end of the locking-lever is provided with an inclined groove 82 upon its inner face, said groovebeing engaged by a pin 83, best shown bydotted lines in Fig. 5. A dat spring 84 hasits lower end. let into the locking lever 81,'and its upper free end bears against the front wall of the recess 79, the tendency of the spring being to force the locking lever to the rear. The upper end of the locking lever is further provided with a shoulder 85 at its front end, which shoulder engages with a corresponding1 shoulder 86 formed at the rear end of the lock ing-block 70.

The under side of the arm 69 is recessed and provided with opposite perforations 87, which receive the upper extremity of a link 8S, which is pivoted by a bolt 89 to said extremity. The upper front end of thelink has a curved shoulder 90, while the lower end of the link is bya bolt 91 pivotally connected to the rearwardly-disposed branch 92 of the lever.

Upon a transverse pin 93 is pivoted the end of a sear 94, which immediately in rear of the pivot has an inclined shoulder 95 designed to engage with the annular shoulder 22 with which the plunger 20 is provided near its rear end. A dat spring 96 is secured to the under side of the scar, declines from thev same, and at its front end rests against a stop 97, the tendency of the spring being to elevate the sear so that its locking shoulder 95 is in the line or path of the rear beveled end of the plunger. To the rear of the sear there is pivoted by a pin 98 a depending arm` 99, which is provided at its front and rearedges and at its lower end with shoulders 100. The lower end of this arm extends through an opening 101 formed in the underside of the receiver and is connected by a fork or bifurcated end 102 of a shaft or switch-lever 103. This shaft or switch-lever is pivoted at its center to the under side of the receiver bya screw104, and at its rear end is provided with a milled lug 105. A small cavity 106 depends from the under side of the switch lever and in the same is loosely mounted a coiled spring 10S upon which is situated a detent 109, whose outer end is conical and may engage any one of a series of three shallow cavities 110 formed in the under side of the receiver, all as best 'shown in Figs. 6 and 7 of the drawings.

Upon a transverse bolt 111 is pivoted the bell crank trigger having a ingeupull 112 at its rear end, and aforwardly-disposed branch 113 at its front end. In front of the trigger 112 and in rear of the iinger-lever 45 there is pivoted upon a transverse bolt 114 a button 115, the front branch of which extends below and in the path of the rear end of the lever 45, and the rear branch of which extends rearward in the path of the lower end of the arm 99 and terminates some distance from the front end of the branch 113 of the trigger. From the lower end of the slotted lug 3l depends a finger 116, which lies in the path of the bent end 40 of the branch 39 of the bell crank lever that operates the carrier-block.

Referring to Fig. 5in which 'the piece is ready for tiring, a pull upon the trigger draws upon the arm 99 against the tension of the spring 96 and thuawithdraws the shoulder 95 of the scar 94 from engagement with the shoulder 22 of the bolt 20. This liberation of the plunger permits the coiled spring 118, which is interposed between the head of the plunger and the rear end of the hollow bolt, to throw the latter forward so that its head abuts against thefront concaved end'oi:` the bore of the bolt and its firing-pin is advanced against the cartridge so as to explode the same. A This movement upon the part of the tiring-pin and plunger is permitted by reason of the loose connection, namely, the slot 32 and pin 72 between the locking-block arm 69 and the hollow bolt. Now by pushingI the finger-lever 45 to the front it, through the medium of th link 88, will release the locking-block and arm and the same will fall, being aided bythe spring 451 to the position shown in Fig. 2, and the-.plunger being carried to the rear will have its shoulder 22 reengaged by the shoulder 95 of the sear. The plate 12 which is engaged by the upper extractor 26 will be carried to the rear so as to open the carrier-block well, and the shell that has been exploded will be withdrawn by the extractors and held suspended within the well. The forward movement of the hollow bolt when in the act of firing will it will be observed, have released the bell-crank lever that supports the carrier-block by reason.of

vthe fact that the lug 116 has been advanced from any contact with the branch 39 of said bell-crank so that the carrier-block will have fallen to its lower position and out of the way of the firing-pin. mentgiven the bolt when the plunger is liberated causesthe lug 30 to depress the pin 66 and the latter acting upon the retaining arm 56 will lower the same so that its shoulder 57 will be withdrawn from the line of cartridges and a cartridge will pass from the magazine into the the carrier-block. Thus when the finger-lever is pulled to the rear the hollow bolt and plunger, as before described, are actuated or returned' to the cocking position, and the lug 116 striking against the bent end 40 of the branch 39 of the bell-cranked lever will serve to re-elevate said lever and carrierblock, thus raising the cartridge to a point in rear of the barrel. The lug 30 being withdrawn from over the pin 66, liberates the arm 56 which is re-elevated by the spring'58 into the path of the cartridges. The re-elevaticn of the carrier-block will cause the saine to contact with the suspended empty shell, and the lower extractor being plain and the upper one engaging the shell will cause the shell to be thrown upward through theearrier block open- The final or forward movelngandthusejected. Ilavingthuselevatedthe cartridge and retracted the plunger and hollow bolt the finger-lever is pulled to the rear `and through the medium of the link 88 the locking-block is swung upward thus carrying the locking-block to an operating position, that is, where it lies alongside and underneath the hollow bolt and in rear of the same. Ip this position the inclined faces of the lockingblock and hollow bolt contact and the link 76 is elevated so as to form a practical continuation of the locking-block and thus lock the bolt in its forward or advanced position and against rebound. This advancement of the bolt is accomplished by the elevation of the block and at the same time the cartridge is forced home or into the barrel. When the parts are in these positions the pin 83 riding :in the inclined groove 82 of the locking lever S1 has caused the shoulder 85 of said lever to engage with the shoulder 86 of the lockinglblock and thus aidsin the supportof the same. Now when the trigger is pulled and the plunger is liberated as before described, and the extra movement given to the bolt it will be `seen that the shoulder 86 of the locking-block `will be withdrawn from over the shoulder 85 of the locking-lever and th'us the lever will no longer support the locking-block. The spring 51, it will be observed, acts at either side of the pivot- 44, by reason of the eccentric con- I `nection between the'sprng and the fingerlever so that whether the finger-lever be `pushed to the front or pulled to the rear, the spring will act to maintain the same in that position.

1I have now described the operation of cock- `ling by the finger-lever and firing by the trigger, and I will proceed to describe how the linger lever may be employed for accom- `plishing both results, that is, so that the gun is `rendered double acting. I accomplish this by swinging the switch lever 103 so that the de- `tent 109 is in the rear opening 110, as shown in Fig; 6, this causes the arm 99 to be withdrawn from under the trigger 113, which latter is now rendered useless or inoperative, and causes the said arm to engage with the irearendof the button 115. The operations of loading and tiring are now the same as before, with the exception that when the linger-lever is pulled to the rear the finger-hold 46` strikes against the under. side of the front end of the button 115, thus depressing the rear end of said button, and pulling down upon the arm 99, thus acting upon the arm in the same manner as did the trigger. In `this manner the gun will be loaded and fired by the one trigger or finger-lever and by simply a forward and rear movement thereof.

The principle involved in the gun described may be introduced in shot-guns and this I have described in Figs. 12 to 15 of the drawings, Shcet 4. In these figures more particularly Fig. 12, 120 designates the receiver, 121 the barrel, 122 the forearm,123 the magazine,

124 the guard, 125 the stock, and 126 the sliding receiver plate.

Upon a transverse bolt 127, the finger-lever 12S is mounted pivotally and the same consists of the depending finger-pull portion 129 "and the rearwardly-disposed branch 130. The branch 130 is pivoted by a pin 131 to thelower end of the link 132, which in turn has its upg:n

per end pivoted at 133 to the underbifurcated side of the arm 134 of the locking-block 135. This locking-block has a front inclined face and is pivoted by a pair of links 136 to the opposite walls ofthe receiver. The bolt is, in this instance, rectangular in cross-section and is best shown in Fig. 14, wherein it is numbered 137. The exterior of the bolt is provided with opposite longitudinal grooves 138 and ribs 139, the former receiving ribs 140, and the latter enteringgrooves 141 formed in the opposite walls of the receiver. The front end of the bolt is provided near its lower edge with a curved forwardly-disposed flange 142, and upon its upper side has secured an extractor 143 which extends beyond the front end of the bolt where it terminates in a hook 144, and in rear of the same is provided with a lug 145 that engages with a depending recessed lug 146 formed upon the under side and at the front end of the reciprocating plate 126. The boltis provided with a `cylindrical bore closed at opposite ends with the exception of its front, which has a minute perforation 147. A hollow plunger 148 is located in the bore of the bolt and is provided at its front end with a lugorpin 149 that extends from the perforation 147 and slightly beyond the same when the plunger is in its forward position. A coiled spring 150 is interposed between the plunger and the rear end .of the bolt serving to force the former to the front. Aconcaved spring-disk 151 is perforated to receive the ring pin or lug and is interposed-between the front end of the plunger and the wall of the bolt. A lug 152 depends from the under side of the bolt and is embraced by the bifurcations at the front end of the arm 134 to which it is piv oted by a transverse pin 153. 154 designates the cartridge retaining arm and the same is pivotally mounted on the transverse bolt 127 that supports the finger-lever, the advanced end of the arm being provided with a shoulder 155, that is normally held in rear of the line of cartridges through the medium of a light spring 156 interposed between the under side'of the arm and the lower portion of the receiver.

157 designates the carrierblock and the same has pivoted to its opposite sides by a pin 158 a pair of levers 159 which are of bellcranked shape and are pivotalI-y mounted on the bolt 127. The lower branches of the bellcranks are provided with curved recesses 160, 1n which rides a pair of pins 161 which eX- tend loosely from the rear branch of the finger-lever, said curved branches forming at IOS IIO

opposite ends of the same, upper and lower lugs 162 and 163 respectively.

Set in a recess 164 formed in one side ofthe receiver and pivoted upon a bolt 165 therein is a bell-crank sear having an upwardly-disposed branch 166 and a declining branch 167, the latter being located in the position of one o f the pins 161. The upper b'ranch of the bell-cranked sear has an upwardly-disposed beveled lug 168 which lies in the path of a transversely disposed trunnion'orlsho'ulder 169 that is formed on and extends from the plunger 148 and projects through the wall of the bolt and into a groove 170 formed in said wall. Interposed between the lower branch1 of the bell-cranked sear and the recess 164is a curved spring 171. Alug 172 projects from the finger-lever 129 and is adapted to strike and depress against the tension of the spring 156 the lever 154. The operation of this mechanism will be readily understood .from the foregoing description and may be brieliy stated as followsz- By drawing the finger-lever to the rear, the hollow bolt is carried forward and the locking block elevated in rear of the bolt so as to prevent a rebound of the saine. The shell which is supported upon the carrier-block is pushed by the bolt into the barrel, and as the lug 169 is engaged by the lug 168 of the sear the spring 150 becomes compressed. A continned movement of the nger-leverand advancement of the bolt causes the pin 161 to strike upon'the upper branch of the bell-cranked Sear depressing said branch and withdrawing the upper end or lug 168 from in front of the lng 169 of the plunger which is thus thrown forward by the spring 150 and the shell eX- .ploded. In the meantime during the movements of the bolt the pin 161 is elevated against the upper lug or end wall of the recess 160 and causes a lowering of the carrier-block to a point opposite the magazine and the lug 172 has come in contact with and depressed the arm 154 thus liberating the line of shells in the magazine and permitting one ci the same to pass rearward upon the carrier-block. When the piece is fired the spring-disk 151 causes the plunger to slightly rebound and be withdrawn from contact with the shell. After tiring a forward movement of the finger-lever causes the locking-block to drop to t-he position shown in Fig. 12, and causes the carrier-'block to be elevated through the medium of the pins 161 arriving at the lower end of the recess 160 and thus elevating the arms or levers 159. Such elevation causes the expulsion of the withdrawn and tired shell and brings the fresh shell to the position shown in Fig. 12, wherein its front end is directly at the breech of the barrel. Thus a subsequent pull upon the iinger-lever will cause the bolt to advance and push the shell into the barrel, the operation of tiring being continued in the manner described.

block, substantially as specied.

From the foregoing description in connec-i tion with the accompanying drawings it will be seen that I have provided a lock mechanism for guns that may be employed in repeating-ritles'or shot-guns, andth'at said guns and i rules may be set so as to be single or double i acting as may be desired and` in accordance 'with the use to which they are to be put. 1- It ton or the rear trigger. `Itwill berfurthermore seen that the breech-bolt is securely locked. and braced against rebound or con cussion and that4 heavy discharges may be l fired without danger of blowing the breech,

block and bolt from the gnu. Y Having described my invention, what I claim iseeiver, having ways, ol a reciprocating bolt mounted in the ways, a' plunger mounted in the bolt, means for pperating the'plunger', I. '953 front e'nd to the bolt and adapted tobe swung a linger-lever, a locking-block pivoted'at its up in rear of the same, and connections between the locking block and tinger lever, substantially as specified. l 2. In a gun, the eombinationwith a remounted therein, means for operating the plunger, a vlinger-lever, a locking-block pivoted at its front end to the boltand having its rear end inclined and adapted to be swung up in rear of the bolt, and connections beme eeiver having ways, a. lhollow bolt,`a pliinger tween the rear end of the linger-lever and th 3. In agun the combination with the re- A.

cciver having` ways, of a hollow bolt 'mounted'- therein and adapted to reciprocate, a lng. de- Y pending from the bolt and having anelon gated slot, a plunger mounted in the bolt,

means for operating the plunger,a bellcrank finger-lever, a lockingfblock adapted to swing",

through the front end of the block and clonjx' i`5. in rear of the bolt, a pin. passed loosely gated slot of the lug, and a link connecting the rear branch of the linger-lever with the f blpck, substantially as speciiied.-

4. In a gun the combination with the re- Iz-o eeiver having ways, ofthe hollow bolt mounted therein and terminating at its front end in a firing-pin, a plunger mounted for reciproca- I tion in the bolt, means for operating the plunger,a bell-cranked finger-lever pivoted in the receiver, a locking-block loosely connected at its frontend to the bolt and adapted at its rear end to be swung in rear pf the bolt, a link pivoted tothe block at the roar end thereof and pivotally connected at its rear end to the receiver, and the link pivotally connected 9 1. In a gun, the combination with-,the re- I to `the locking-block and to the inner branch ui the bell-cranked finger-lever, substantially its specified.

i5. In a gun the combination with the re- 5 ceiver having ways, ot' a hollow bolt mounted therein and terminating at its front end in a 1lt`iring-pin,'a`plunger mounted inthe bolt, means ior operating the plunger, a bell-cranked fine `ger-lever located below the bolt, a lockingo block pivoted at its frontend to swing in rear pt thebolt,alink pivotallyconnect'ed at its rear end to the receiver and at its front end to the `rear end of t-he block, which latter basa link jpivotally connected at its upper end to the 5 block and at its lower ebd to theinner branch int `the bell-crank, a spring pivotally secured `at its front end in the receiver, and a link pivptally connected to the rear end ot' the spring and eccentrically con nectved with 'the trigger,

o substantially as specified.

i3. In a gun the combination with the rebeiver having ways, a hollow bolt mounted in the ways and terminating at its front end in it tiring-pin, a plunger mounted for reciproca- 5 tion in the bolt, and means for actuating the piunger,a lug depending from the under side bt' the bolt and having an elongated slot terininating in a finger, of a bell-crank lever, a locking block loosely connected with the slot o and adapted at its rear end to take in rear of the bolt, a link connecting the inner end of the bell-cranked iinger-lever with the block and provided with an inclined shoulder near `its upper end, a bell-cranked lever pivoted ;5 above the finger-lever and having one branch `extended in the paths ot' the shoulder of the link and the nger ot the lng, and a carrierblock mounted in advance of the finger-lever `and loosely engaged by the remaining arm of lo the bell-crank, substantially as speciied. a

7. In a gun the combination with the maga eine, barrel, and receiver, the latter having ways, of ahollow bolt terminating at its front end in a tiring pin mounted in the ways, a

plunger mounted in the bolt, means for actuaing the same means for locking the bolt against retraction, a bell-cranked lever pivoted in the receiver and adapted to be actuated in one direction by the bolt and in the 5o opposite direction by the linger-lever, a carrier block loost-ly connected with the forward branch of the lever and adapted to reciprocate between the magazine, and barrel, an `arm pivoted in the rear of the magazine, and

155 having its forward end spring-pressed in the `path of the cartridges, and means for depressing the arm at each forward reciprocation of the bolt., substantially as specified.

8. In a gun the combination with the magaio zine, barrel and receiver, the latter having Ways, of a reciprocating bolt mounted in the ways, a lng on the under side ot` the same, vertical ways formed in the receiver, an arm pivoted in rear of the magazine, a spring for b5 elevating the same into the path of the cartridges, a pin mounted in the vertical ways above the arm and resting on the latter and arranged inthe path of the lug of the bolt, and means for reciprocating the bolt, substantially as specified.

9. In a gun the combination with the receiver, magazine, and barrel, of a carrier block mounted for vertical reciprocation between the latter two, a bell-crank lever pivoted in the receiver and loosely connected at its front end to the carrier block, means for striking and vibrating the remaining branch of the bell-crank lever, which lever is provided between its branches with aconvex surface and a spring secured in the receiver and terminating between the branches of the bell-crank in a beveled head adapted to slide over the convexed surface and to opposite sides of the pivot of the bell-crank, substantially as specitied.

10. In a gun the combination with the receiver having ways, the hollow reciprocating bolt mounted therein and terminating in a firing pin, the plunger mounted in the bolt, means for actuating the plunger, a lug depending from -the bolt and having an elongated slot, a locking block having an opening loosely engaging the slot and adapted to swing up in rear of the bolt and having its rear end provided with a shoulder, a link pivoted to the receiver and at its front end pivoted to the locking block and provided with a transverse pin, a locking leverpivoted at its lower end to the side of the receiver and havingits upper end provided at its front side with a shoulder for engaging that of the lockingblock, and an inclined way engaging the pin of the link, and a spring for normally pressing the lever rearward, substantially as specified.

ll. In a gun the combination with the receiverhaving ways, the bolt mounted in the ways havinga rear bore and closed front end from which extends a rigid tiring-pin, the plunger mounted in the bolt and terminating at its front end in a he`ad,a spring interposed between the head and rear end of the bolt, a shoulderon the plunger in rear of the bolt,a sear pivoted at its front end and provided oetween its' ends with a shoulder engaging that of the bolt, a spring for normally elevating the sear and an arm depending from the rear free end of the` sear and pivoted thereto, a trigger loosely connected to the arm, and meansvfor reciprocating the bolt and plunger to the rear and the bolt to the front, substantially as specified.

12. Ina gun the combination with the receiver having opposite ways, a plunger and tiring bolt terminating in a pin mounted in the ways, the plunger being provided with a notch, of means for locking the firing bolt in an advanced position, a sear pivoted at its front end and provided in rear thereof with a shoulder for engaging the notch, a spring for supporting the shoulder in the path of the notch, an arm depending from the sear and IOO IIO

provided at its lower end and at opposite sides with shoulders, a trigger arranged in rear of the arm and of bell crank shape and adapted at its front end to engage the rear shoulder of the arm, a trigger arranged in advance of the arm, intermediate devices, between the last mentioned trigger and arm whereby said trigger may actuate the arm, means forshifting the arm So as to be actuatedv by either trigger, and connecting devices between the hollow bolt and front trigger, substantially as specified. V

13. In a gun the combination with the receiver, a reciprocating ring bolt, a lug depending from the bolt and moving therewith, a bell crank trigger, a swinging locking block adapted to take in rear of the bolt, a link having a shoulder, of a carrier block, a bellcranked lever having one branch engaging the same and at its rear branch extending into the patlrof and adapted to be struck at opposite sides by the lug of the rin g bolt 'and shoulder of the link during the movements of the two, substantially as specified.

14. In a gun the combination with the receiver having opposite ways, a reciprocating firing bolt mounted therein and provided with a depending lug, a trigger, a swinging locking block arranged between the trigger and bolt, a link provided at its upper end with a forwardly-disposed shoulder, a carrier block, a bell-crank lever for operating the same, the rear branch of the bell-crank being provided with a laterally bent portion eX- tending into the path of and adapted to be struck alternately by the lug of the bolt and shoulder of the link, said bell crank being provided between its branches with a convexed eccentric surface, of a spring lever secured to the receiver and terminating at its rear end in a head having a beveled face lying upon the eccentrically-curved portion of the bell-crank lever and adapted to operate at opposite sides of the fulcrum of thelatter, substantially as specified.

15. In a gun the combination with the receiver having ways in its upper side and provided between the same with an opening, of a reciprocating bolt located below the ways in lower ways formed in the receiver and terminating at its front end in a iringlpin, a plate mounted for reciprocation in the upper ways and adapted to cover the opening and provided upon its under side with a concaved lug, an extractor arm secured to the tiring pin and terminating at its front end inahook and provided above the same with a convexed lug engaging the concavity of the depending lug of the plate, an extractor arm at the under side of the tiring-pin, the same being plain, means for reciprocating the bolt, a vertical reciprocating carrier-block, and means for elevating the same at a retraction of the firing bolt, substantially as specified.

16. In a magazine gun the combination with the magazine and receiver, of a reciprocating tiring-bolt provided upo'n lts under side with a lug, vertical ways formed upon the inner side of the receiver, a reciprocating pin mounted in the ways, an upwardly-pressed lever pivoted in the receiver in rear of the magazine land provided upon its upper s ide with a shoulder normally extending into the line of cartridges at the rear end of the magazine and adapted to be depressed by the downward movementof said pin, substantially as specitied. e

17. In a magazine gun the combination with the magazine, the receiver having ways, the tiring bolt 'provided with a lug and mounted inthe ways, of an arm pivoted inthe receiver and provided upon its upper side with a shoulder extending into the path of the cartridges in the magazine, intermediate vertical blocks forming wayslocated upon the side of the receiver between the arm and bolt, one of said blocks being provided with a lug, and a pin mounted for reciprocation between the blocks and recessed at one edge to embrace the lug and at its lower end resting upon the arm, substantially as specified.

18.1n a gun the combination with the receiver having ways, the hollow bolt mounted therein and terminating at its front end in a firing pin, a spring-pressed plunger located in the bolt and provided at its rear end with anotch, the pivoted sear having a shoulder for engaging the notch, a spring for supporting the Sear, an arm pivotally connected at its upper end'to and depending from the rear end of the sear, said arm being provided at opposite sides with shoulders, a bell-crank trigger pivoted in rear of the arm and adapted to engage the same, a button pivoted in front of the arm and adapted at its rear end to engage the front shoulder of the arma bell crank trigger in `advance of the button and adapted to strike the front end of the same when drawn to the rear, a spring for said trigger, of a pivoted shifting lever located under ICO ITO

the receiver and having one end engaging th'e 19. In a gun the combination with the receiver having ways, the hollow bolt mounted therein and terminating at its front end in a firing-pin, a spring-pressed plunger'located in the bolt and provided at its rear end with a notch, the pivoted scar havinga shoulder for engaging the notch, aspring for supporting the sear, an arm pivotally connected at its upper end to and depending from the rear end of the sear, said arm being provided at opposite sides with shoulders, a bell-crank trigger pivoted in rear of the arm and adapted to engage the same, a button pivoted in front of the arm and adapted at its rear end to engage the front shoulder of the arm, a bellio side for bringing the arm into engageinent. 1

with the button or bell-crank trigger or to :L

point between the same where no engagement is elleeted, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in I5 the presence oi ",wo witnesses.

g ROBERT DINSMORE. Witnesses:

D. M. TIMBERLAKE, C. A. WEST.