US1363040A - Firearm - Google Patents

Description

G. HAMMOND.

FIREARM.

APPLICATION FILED Dsc. I, Isn.

Patented Dec. 21, 1920.

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G. HAMMOND.

FIREARM.

A PPLlcATloN FILED 0501.191?.

Patented Dec. 2l, 1920.

2 SHEETS-SHEET 2.

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GRAN T HAMMOND, 0F NEW HAVEN, CONNECTICUT, ASSIGNOR 0F ONE-THIRD T0 ALVA C. WSHBURNE, 0F PITTSFIELD, MASSACHUSETTS, AND ONE-THIRD '.1'0

FREDERICK G. CRANE,

OF DALTON, MASSACHUSETTS.

emanan.

Specification of Letters Patent.

Patented Dec. 21, 1920.

Application inea December 1, 1917. serial no. 204,921.

To all whom t may concern y Be it known that I GRANT HAMMOND, a citizen of the United gtate's, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and Improved Firearm, of which the following is a specification.

My invention relates more particularly to the class held and that are commonly discharged from the person, and an object of my invention, among others, is to producea firearm of this class that shall be particularly eiiicient 1n operation and that shall be particularly free from liability to accidental discharge, .and especially one that may be cleaned from the breech rather than through the muzzle and in which the parts may readily be reassembled after having been taken out for such cleaning or for vother purposes.

One form of firearm embodying my invention and in the construction and use of which the objects herein set out, as Well as others, may be attained, is illustrated in the accompanying drawings, in vwhich- Figure l is a vView in side elevation, and partially in central longitudinal section, of a rearm embodying my invention.

Fig. 2 is a view in side elevation of the upper, rear part of my improved lfirearm and lookinat the opposite side from that shown in ig. 1, and with away to show construction.

Fig.v3 is a view in end elevation of the upper part of my improved firearm.

Fig. 4 is a top plan View of my improved irearm with show construction.

Fig. 5 is a view in side elevation of the upper, rear part of my improved firearm looking at the left hand side thereof.

Fig. 6 is a view partially in cross section .on plane denoted by dotted line 6--6 of Fig. 2.

Fig. 7 is a bottom view of the receiver and contained mechanism with parts broken away to show construction.

Fig. 8 is a detail view in cross section on plane denoted by dotted line 8 8 of Fig. 2.

Fig. 9 is a detail view in cross section on plane denoted by dotted line 9 9 of Fig. 2.

Fig. 10 is a detail view in cross section of firearms that are manually parts broken parts broken away to 0F11 p12ane denoted by dotted line 10'-10 of 1 g. 11 is a detail top view of the handle.

F 1g. 12 (Sheet I) is a detail top view of the breech-bolt partially broken away to show parts mounted therein.

In the accompanying drawings the numeral 10 indicates the frame of my improved rearm, having a handle' 11 comprising the lower ortion thereof with a receiver 12 removab y attached to its upper end and a barrel 13 secured/to and projecting from the front end of the receiver. These parts may be of any desired sha e and composed of any suitable material, the

frame having a rearward extension 1'1 for prising a part of the firing mechanism.

In the operation of the parts provision is made for a limited sliding movement of the receiver upon the frame, the receiver being moved to and yieldingly held in its forward position on the frame by means of a receiver actuating plunger 2O seated against a spring in a recess 2]. in the upper front edge of the frame, said plunger being shouldered at its front end to press against a front end wall 22 of 4a groove extending lengthwise between the side arts of the receiver on the bottom thereo said end wall 22 ofthe groove being adaptedV to strike the front end of a projection 23 extending lengthwise along the upper end of the frame. The plunger may be heldin place as by means of a headed pin 86 secured to the frame in v any suitable manner.

I have provided means in the weapon shown herein whereby cleaning may be effected from the breech end of the barrel and injurious effects due to cleaning from the muzzle end of the barrel are thus avoided. To accomplish this purpose the parts are so constructed that there is no necessity for compressing springs 1n order to reassemble the parts after they have been taken down for cleaning or for other pur-v poses, the breech-bolt actuating spring being so attached tothe breech-bolt that it is removed from the receiver together with' the breech-bolt, these parts being constructed to be readily taken out and put back in a manner to be hereinafter described. Further than this the receiver and the breech-bolt mechanism are organized as a unit so that when the receiver is removed from the frame the breech-bolt may also be removed within it. In the arrangement herein shown to attach the receiver to the frame the lips 19 on the receiver are engaged at the front end of the frame in the grooves 18 therein, and the receiver is. slid backwardly. In this operation of engaging the receiver with the frame, a receiver locking bolt 24, located in a re ceiver locking bolt recess 25 in the frame, and seated against a springtherein and accessible from the outside of the frame, is manually pushed inwardly against the tension of said spring to remove a receiver locking bolt lug 26 from the path of movement of the edge of a locking recess 28 in the lower edge of one of the side parts of the receiver, s aid lug being pushed into a bolt lug -receivlng recess 27 in the frame. When the receiver has been moved backwardly to its proper position on the frame in the assembling operation, the bolt 24 will be forced outwardly by its spring and the lug 26 will b'e rengaged with the receiver locking recess 28, that is a little wider than the lug 26 to permit a limited movement of the receiver on the frame for a purpose to be hereinafter described. e

The receiver 12 has an opening extending through it from end rto end within the threaded frontend of which the barrel 13 is secured, said opening, back of the barrel, constituting a breech-bolt chamber 29 that has the usual ejection opening at the side and an opening communicating with a magazine chamber. rlhe breech-bolt 30 is of substantially round shape in cross section and is formed to fit the chamber 29 and to have a sliding movement therein. A firing pin 31 is located for reciprocating movement in a hole extending through the breech-bolt from end to end, this hole being enlarged a short distance from the front end of the breechbolt to provide a firing pin chamber 32 that receives the firing pin spring and an enlarged ring pin body as shown in Fig. 1 of the drawings.v A breech-bolt lock 33 is located in an opening extending from the bottom of the breech-bolt into the chamber 32,-the head of said bolt extending into a breech-bolt locking recess 34 in the bottom wall of the receiver. The breech-bolt lock 'has a slot 35 extending from that end opposite the head, inwardly, within which slot thebody 36 of the firing pin is received, this part of the body being preferably flattened on opposite sides, and the slot being of a depth to permit a limited movement of the breech-bolt lock in a direction laterally of the firing pinv without obstruction by the latter. A breech-bolt lock retaining lever 37 is pivotally secured in a slot in the side of the breech-bolt, one end of this lever being forced 'by a spring located underneath its opposite. end (see Fig. 12) into a recess 38 1n the side of the breech-bolt lock to retain said'lock in place when the breech-bolt is removedy from the receiver, said lever, being disengaged from said recess by contact with the inner wall of the breech-bolt chamber when said bolt is in its forward position. The head of the breech-bolt lock is recessed to receive the cam shaped end 39 of a breechbolt lock actuator 40 pivotally mounted in a slot in the upper end of the frame, said cam being normally located inthe recess in the end of the bolt and consequently in the path of movement of the receiver. Said lock is pressed against said actuator by a spring in a recess 87 in the bottom of the slot 35, which spring is backed up by aplunger 88 in said recess and thrustingagainst the body of theliring pin Within a hereinafter mentioned locking notch therein. The actuator is held in this position by the receiver locking bolt 24 that has .a groove 41 cut across it to receive said actuator for the release thereof. This release must be effected before the receiver can be removed from theframe, and manually effected endwise movement of the bolt 24 to release its lug 26 from engagement with the locking notch 28 in the side part of the receiver at the same time releases the cam 39 on the actuator 40 from engagement with the bolt lock 33. y

The locking bolt 24 is held against displacement by a lug 42 projecting from a main spring-support 43, located in a recess 44 in the extension 14, and into aslot vin the side of the bolt 24, which slot is somewhat wider than said lug to permit a lirn ited endwise movement of said bolt. This support receives the main spring 45 arti it also acts as a sto to limit the backward movement of the ammer, said spring exerting' its force upon a hammer actuating plunger 46 in said recess, said stop and spring extending into a. recess 'in the plunger, as shown in dotted lines in Fig. 1, said plunger thrusting against a hammer 47 pivotally mounted in said extension and having its operation controlled by means of a .sear 48 pivotally mounted in the extension wlth one end movable into position to engage notches in the hammer in a usual mann er as by means of a spring located underneath the other `end of the sear, and as shown in Fig. 1 of the drawings. The sear 'j 1,363,040 i f ai is secured to a sear shaft 49 projecting through the frame, preferably to the right hand side thereof, and having a sear yactuating inger 50'secured to it and ada a ted to engage a sear actuating bar 51 pre having a notch 52 to receive said finger.

The bar `51 extends `through a slot in a bar positioningplunger 58 partially located in aprecess in the side of the frame and seated upon a spring, as shown in Fig. 2 of the drawings. Said bar is pivotally at` tached to the trigger 17 and has a safety notch 54, preferably of circular form to receive the rounded side of a lu 55 on -the end of a safety lock 56 that is 1n the shape of a pin rotatablymounted in the frame and having an actuating lever 57 by means of which the lock may be manually operated. A space is left between the upper side of the lug 55 and the plane of the lower edge of the bar 51 to permit downward movement of the bar sufficiently for disengagement from the linger 50 of the sear when thetrigger is in its backward position.

When the lug -55 is turned, as by the actuatin lever 57, so that it will be within the notc 54 in the bar, the latter cannot be moved, and pressure upon the trigger, therefore, cannot effect release of the sear, and the firearm isthus, by this means, secured against unintentional firing. Further than this, the plunger 53 is also locked by the operation of said lug and through the medium of the bar 51, so that the upper end of the plunger, that is located in a recess in the bottom of the breech-bolt as hereinafter described, will prevent the breech-bolt from moving backwardly and the latter cannot, therefore, be opened.

A safety lock holder 58, in the form of a plunger, is located in a well 59 projecting downwardly into the frame from the upper end thereof, a small hole being formed through the bottom of the well to receive the reduced end of the plunger that extends through said hole into the hole in the frame in which the safety lock 56 is located. This reduced end of the plunger is adapted to engage locking recesses 60 formed in the side of the safety 1ock,-the plunger being spring` pressed into engagement with said recesses as by means of a spring in said well that may be held in place by ai screw plug 61 -(see Fig. 10). The end of the holder and the recesses are so formed that suiiicient pressure applied to the actuating lever 57 will disengage said parts, the pressure of the latter, however, being sulicient to hold the parts in engagement under ordinary conditions. The rounded part 55 of the safety lock is preferably a lug projecting from the end of said lock at one side thereof as shown in Fig.' 10 of the drawings. The parts above described are accessible within erably l (see Fig. 2) which recess is closed by a thumb plate 63 preferabl having beveled edges to fit dove-tailed s aped grooves in the sides of said recess. A retainlng groove 64 is formed in the outer surface of the plate, which groove receives one of the lips 19 on the receiver, said li thereby retaining the thumb plate in positlon. The positionin plunger 53 extends upwardly through' a liole in the frame, the upper end of the plunger being located in a disconnecting recess 65 in the under side of the receiver that operates, when the receiver moves backwardly, to depress the plunger and disconnect the bar 51 from the actuating finger 50 on the sear. This is of especial advantage in the automatic action of the device, as such release of the sear leaves it in position to promptly rengage the notches of the hammer and without such hindrance thereto as a continued pressure upon the trigger might otherwise produce. This prevents what is known as a repeat in the firing operation.

The firing pin 31 is secured in its chamber as by means of a threaded firing pin plug (36 screwed into the end of the breech-bolt and having an opening to receive the back end of the firing pin. The body36 has a firing pin locking notch 67 that is of a width to receive the breech-bolt lock 33 when'said lock is in its position to release the breechbolt, said locking notch 67 being formed to receive said lock, and said notch also having a beveled edge 91 that permits the lock 100 33 to enter the notch at any time. The firing pin is of such length that when it is locked against movement by the lock 33 both its front and back ends are within 'the breechbolt and they cannot, therefore, strike a 105 cartridge or be struck by the hammener other parts, and this locking of the firing pin taking place during all of the time which the breech-bolt is unlocked the firing pin cannot be actuated to explode a cartridge 110 except when the breech-bolt is in its closed and locked position. This constitutes a safety feature to prevent unintentional opera-tion of thefiring pin to fire a cartridge. The firing pin is, by the force of the ham- 115 mer, thrown forward beyond the front end of the breech-bolt with sufhcient force to fire a cartridge after which the firing pin spring immediately withdraws said front end witha recess 62 located in the side of the frame the breech-bolt moves backwardly, said ejec- 130 l in an ejection opening 72 in the side of the receiver, one end of said opening being reduced substantially to the form ofthe stop and to constitute a breech-bolt stop shoulder 73. The edges of this reduced part are beveled asv at 89 to enter notches 90 on opposite sides of the bolt stop when the breech-bolt is in its backward position and positively hold said stop at this time.

A notch or recess 82 is formed in the side of the breech-boltl stop 68 and receives a tail 83 of an extractor 84 that has a lip 85 arranged to engage the ange of a cartridge in a manner that will be readily understood by those skilled in the art. The extractor, therefore, serves as a retainer for the breechbolt stop -in addition to its extracting function, and said stop when held by engagement of its notches 90 with the beveled lips 89 also supports the extractor at this time against increased force caused by the ejector. The operation of the ejector and extractor will be readily understood from the brief description contained herein in connection with the accompanying drawings and without further explanation.

A spring chamber 7 4 is formed in the meeting surfaces of the breech-bolt and receiver at the upper side of 'the breech-bolt to receive a breech-bolt actuating spring 75, which spring is received upon a breech-bolt actuating-spring rest 76 lying against the forward wall of said chamber. The opposite end of said spring thrusts against a breechbolt latch locking bolt 77 located in the outer end of said chamber and secured as by-means l of a locking bolt rod 78 projecting along said .chamber from the front end of the breechbolt and screw threaded into said locking bolt. The front end of the rod 78 terminates at a little distance from the end of the breechbolt so that said rod and the locking bolt mav have a limitedmovement longitudinally of the firearm to disengage the back end of the locking bolt from a locking recess 7 9, in a breech-bolt locking latch 8O pivotally secured to the receiver as shown in Fig. 1 of the drawings. A breech-bolt latch locking boltactuating plunger 81 projects through the latch 80 and rests against. the end of the locking bolt 77. Said plunger is held in place -as by means of a pin projecting across the side of the plunger as shown 1n Fig. 1. This plunger being pressed inwardly moves the bolt 77 from engagement with the recess 79 andthe latch 80 may then be raised to permit removal of the breech-bolt from the receiver, in which operation the breech-bolt actuating spring is also removed, being retained in a partially compressed state until the breech-bolt is again replaced in its chamber in thereceiver. The latch 80 'has laterally projecting lugs 92 that enter recesses 93 formed in the upper side of thepreceiver ,and as shown in Figs. 4 and 5 of the drawin s.

A j n accordance with the provisions of th patent statutes I have described the prinl ciples of operation of my invention, together with the device which I now consider to represent the best embodiment thereof; but I desire to have it understood that the device 'shown is only illustrative, and that the invention may be carried out by other means.

I claim 1. A lirearm including a receiver having a breech-bolt chamber'therein, a breech-bolt movable within said chamber and removable therefrom,'a breech-bolt actuating spring, a member to receive the thrust of said spring as the breech-bolt moves backwardly, a rod secured to said member and extending through said spring and movably but permanently secured to -the breech-bolt when I the parts are assembled to retain the spring in place, and means for securing the breechbolt within its chamber.

2. A firearm including a receiver having a breech-bolt chamber therein, a breech-bolt movable within said chamber and removable therefromand having a recess, a breech-bolt actuating spring located within said recess, a member located in said recess to receive the thrust of said spring, a rod secured to and extending from said member through said spring and movably but permanently secured to the bolt when the parts are assembled to maintain the force of said spring when the breech-bolt is removed from its chamber, and means for securing the breechbolt within its chamber. 3. A firearm including a receiver having a breech-bolt chamber therein, a` breech-bolt movable within said chamber and removable therefrom, a breech-bolt actuating element projecting be ond one side of the breechbolt, means or attaching said element to the breech -bolt and for maintaining the force of the element when the breech-bolt is removed from its chamber, and means movably `but permanently secured to the receiver for partially closing said breech-bolt chamber and movable to permit removal of the breech-bolt and said breech-bolt actuating element as a unitary structure.

4. .A firearm including a receiver having a breech-bolt chamber therein and a recess in the wall of said chamber, a breech-bolt'movably mounted in said chamber and removable therefrom and having a recess to registerwith that in the wall of the' chamber in the receiver, a breech-bolt actuating spring located in both o f Said recesses, a rod extending through a hole in the breech-bolt t'o the recess therein and connected to the spring to retain its force when the breech-bolt is removed from its chamber in the receiver, and a member movably but 'permanently attached to the receiver to secure the breechbolt in its chamber and to close the breech-bolt and in the receiver.

A firearm including a receiver having a breech-bolt chamber therein, a breech-bolt movabl)7 mounted in the chamber and removable therefrom, a breech-bolt locking latch movably attached to the receiverA to retain the breech-bolt in its chamber, a latch locking bolt located in the chamber in the receiver and engaging said latch to retain it in its closed position, and means for disengaging said locking bolt from the latch to release the latter.

6. A firearm including a receiver having a breech-bolt chamber therein, a breech-bolt movably mounted in said chamber and removable therefrom, a latch movably attached to the receiver to secure the breechbolt in its chamber, a latch locking bolt located in said chamber, means forforcin said locking bolt into a recess in the latch to retain it in its locked position, and means for disengaging said locking bolt from the latch to release the latter.

7. A firearm including a receiver having a breech-bolt chamber therein, a breech-bolt movably mounted in the chamber and removable therefrom, an element Within said chamber for actuating the breech-bolt, a

- breech-bolt locking latch movably attached to the receiver, a latch locking bolt mounted in contact with said element that forces the bolt into locked engagement With said latch, and means for disengaging said locking bolt permit release of the latter.

breech-bolt chamber therein, a breech-bolt movably mounted in said chamber and removable therefrom, spring located in said chamber and operatively connected with the breech-bolt, a breech-bolt locking latch movably attached to the receiver, a latch locking bolt movably mounted in the receiver and operated by said spring, and means for forcing said locking bolt against the tension of said spring to disengage it from said latch and release the latter.

9. A firearm including areceiver having a breech-bolt chamber therein, a breech-bolt movably mounted in said chamber and removable therefrom, a,breech-bolt actuating spring, a latch locking bolt to receive the thrust of said spring, a rod to secure said locking bolt to the breech-bolt, a latch movably attached to the receiver and formed to engage said latch locking bolt, and means for disengaging the latch locking bolt from Vthe latch to release the latter.

10. A firearm including a receiver having a breech-bolt chamber therein, a breech-bolt the recess in Y a breech-bolt actuating.

movably mounted in said chamber and removable therefrom, .a latch movably attached to the receiver to secure the breech` to retain the breech-bolt in its closed posi- -t1on, means for operating said lock, a firing pin movably mounted in a hole extending I throughla breech-bolt and shorter than said hole, means to engage said firing pin and lock it with both ends Within said hole When the breech-bolt is unlocked, and means for releasing said firing pin lock when -the breech-bolt reaches its4 closed and locked position.

12. A firing mechanism for a firearm including a breech-bolt movably mounted in a breech-bolt chamber in the firearm, a lock to retain the breech-bolt in its closed position, means for operating said lock, a firin pin movably mounted in a hole extending through the breech-bolt and shorter than said hole and having a locking notch, and a firing pin lock rigidly connected with the breech-bolt lock and positioned to enter said notch and hold the firing .pin with both ends Within said hole during an unlocked condition of the breech-bolt.

13. A firing mechanism for a firearm including a breech-bolt movably mounted in a breech-bolt chamber in the firearm, a breechbolt lock movably mounted in the breechbolt and extending into a firing pin chamber, a firing pin located in said chamber, a plunger located in a recess in the breech-bolt lock and thrusting against a Wall of the firing pin chamber, and means for operating the breech-bolt lock,

14. A firing mechanism for a firearm including a breech-bolt movably mounted in a breech-bolt chamber in the firearm, a breechbolt lock extending into a firing pin chamber ceiver movably mounted on the frame, a

breech-bolt mounted in a breech-bolt chamber in the receiver, a breech-bolt lock movably mounted in the breech-bolt, means for operating the breech-bolt lock, and a firing pin located in the breech-bolt and constructed to be secured against movement by the breech-bolt lock when the latterV is in position to release the breech-bolt, said firing pin being also constructed to permit movement of the Vbreech-bolt lockl when the breech-bolt is closed and the firing pin is in its operative condition.

16. A cluding a breech-bolt movably mounted in a breech-bolt chamber in the firearm, a lock to retain the breech bolt in its closed position, a movably mounted breech-bolt lock actuator, and means for holding said actuator in its operative position and for releasing it for movement to an inoperative position.

17. A firing mechanism for a firearm including a breech-bolt movably mounted in a breech-bolt chamber in the firearm, a lock to retain the breech-bolt in its closed position, a pivotally mounted cam lever having one end operatively engaging said lock, and manuali. operated means for holding said lever in its operative position and for releasing it for movement to an inoperative position.

18. A firearm including a frame, a receiver to removably engage said frame, a receiver locking bolt to secure the receiver to .the frame, a breech-bolt movably mounted in a breech-bolt chamber in the receiver, a breech-bolt lock to retain the breech-bolt in its closed position, and an operative connection between the breech-bolt lock and saidreceiver locking bolttc release the breechbolt lock by the operation of said bolt.

19. A firearm including a frame, a receiver to removably engage said frame, a receiver locking bolt to secure the receiver'to the frame, a breech-bolt located in a chamber in thereceiver, a breech-bolt lock to retain the breech-bolt in its' closed position, and a pivotally mounted lever operatively engaging said breech-bolt lock and also operatively connected with said lockin bolt whereby the breech-bolt lock may ge 20. A firing mechanism for a firearm including a breech-bolt movably mounted in a' breech-bolt chamber in the firearm, a lock to retain the breech-bolt in its closed position, means for releasing said breech-bolt lock, and a member operatively engaging another member of the firing mechanism and also inV engagement with said means for releasing the breech-bolt lock to.secure said means in place.

21. A firing mechanism for a'firearm including a receiver, a breech-bolt movably mounted in a breech-bolt chamber in the receiver, a lock to retain the breech-bolt in its closed position, a lock actuator, manually operated mechanism for releasing said actuator to permit removal of the receiver from the frame of the firearm, a hammer, and a hammer actuating plunger connected with a member of said mechanism to retain itfin place.

firing mechanism for a firearm in- I'B- i leased by the operation of said locking boltu 22. A firing mechanism for a" firearm including a breech-bolt movablyfmounted 1n a breech-bolt chamber in-the firearm, a lock to( retain the breech-bolt in its closed position, a pivotally mounted lock actuating lever, a manually operated member to actuate said lever, and a member operatively connected with another member of the firing mechanism and also engagingsaid manually operated member to retain it in place.

23. A firing mechanism for a firearm including a breech-bolt movably lmounted in a breech-bolt chamber in the firearm, a lock to retain the breech-bolt in one position, and a breech-bolt lock retaining lever pivotally mounted on the breech-bolt to engage a shoulder formed by the-end of an ejection opening in the firearm frame during movement of the breech-bolt whereby said levern is actuated to release it from the breech-y sal opposite walls, and lips formed on the edges of said opening at one end thereof and at a distance from the opposite end to engage said grooves to support said stop.

25. A firing mechanism for a firearm including a breech-bolt movably mounted in a I breech-bolt chamber in the firearm, a breechbolt stop yieldingly mounted in the breechbolt and projecting from the side thereof into an ejection opening in the firearm, said stop having grooves in its opposite walls, and lips formed on the edges of said opening at one end thereof and spaced from the opposite end of said opening t0 engage said grooves to support said stop.

26. A firing mechanism for. a firearm including a breech-bolt movably mounted in a breech-bolt chamber in the firearm, a breechbolt stop projecting fromv the side of the breech-bolt into an ejection opening in the firearm, a spring rest located within said `stop and having an opening through which a firing pin passes, a spring pressing against the breech-bolt stop and said recess, and rreans for retaining' the breech-bolt stop in ace. p 27. A firing mechanism for a firearm including a breech-bolt movably mounted in a breech-bolt chamber in the firearm, a breech-bolt stop projecting from the side of' the breech-bolt into an ejection opening in the firearm, and an extractor engaging` said breech-bolt stop to hold it in place.

28. A firing mechanism for a firearm including a breech-bolt movably mounted in a breech-bolt `chamber in the firearm, a breech-bolt Stop projecting from the side of the breech-bolt linto an' opening in the fireiso arm,said stop having groovesin its opposite walls, an extractor operativelyengaged movement Within said slot," a breech-bolt.

stop projecting fromtheside ofthe breeehbolt into an opening in the firearm, said, stop having grooves in its opposite Walls, an ex,-

gagement with said stop, and lips formed on theedges of said opening to engage said grooves to support said lock and extractor against the force of said ejector. Y

30. A liring mechanism for a firearm including a hammer and a member to con# trol the movements thereof, a trigger, a bar connecting the trigger and said member, a breech-bolt, a bar positioning member located in the {ath of movement of a part of the breech-bo t, and means for locking said bar with said bar positioning member in position to prevent movement of the breechbolt.

31. A firing mechanism for a firearm in-l cluding a hammer and a member for controlling 4the movements thereof, a trigger, a bar.' connecting the trigger and saidl controlling' member, abar positioning member' operatively connected with the bar, a breechbolt movably' mounted in the. frame and having a recess to receive saidbar positionlng member to move the ybar lnto inopera- Ative position dur'nng movement of the breech-bolt, and means for locking the bar against'movement While engaged with said controlling member and when said positionmg member is in said recess thereby preventing movementof the breech-bolt.

v 4 -b 32. `A iring mechanism for a fire arm intractor pivotally mounted in the breechbolt and having a part in cooperative enluding a hammer and a member for controlling )the movement thereof, a trigger, a bar operatively connecting the trigger and n said controlling member, a breech-bolt movabl mounted in the frame of the firearm an having a' recess, a bar positioning member projecting into said recess, and .a manually operable safety member mounted in the frame and having a lug positioned to permit movement of? said bar in one position of the lug but to lock said bar in engagement with said hammer controlling member and with said positioning member in the recess in the breech-bolt when the safety member -is in another position thereby preventing movement of the breech-bolt.

GRANTv HAMMOND.

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