US1912403A - Slide-action firearm - Google Patents

Description

June 6,1933. w c. ROEMER SLIDE ACTION FIREARM 1932 3 Sheets-Sheet l Filed Aug. 19

June 6, 1933. w. c. RoEMER 1,912,403

SLIDE ACTION FIREARM Filed Aug. 19, 1932 3 Sheets-Sheet 2 June 6, 1933. vv. c. ROEMER 3,912,403

SLIDE ACTION FIREARM Filed Aug. 19, 1932 C5 Sheets-Sheet 3 Patented June 6, 1933 narran stares :MARYLAND relates rarer erstes WILLIAM C. ROEMEB, Gilil NEW HAVEN, CONNECTICUT', ASSIGNOR TO `\VI`.L\`I'GHIES'IQEZR,V REPEATING .ARMS CMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION 0F SLIDE-ACTlON FIREARM Application filed August 19,

rlhis invention relates to an improvement in rearms and particularly to that class of firearms which are manually operated by means of a reciprocating slide, and are, for that reason, commonly known as slide-action firearms. a'

@ne of the main objects of my present invention is to provide a firearm of the type referred to with simple, reliable and effective means for holding the manually-operable slidehandle or equivalent member against displacement during the interval between the closing` of the bolt and the firing of the gun, to thus prevent the unintentional partial re` tirement of the bolt during such interval and the consequent failure of the gun to properly fire when the trigger is pulled.

Another object of my present invention is to provide a firearm of the type referred to in which reliable and effective automatic means is provided for preventing a premature release of the bolt after the salne has been moved into and locked `in its breech-closing position to thus guard against accidents kdue to hang-fires.

A further object of my present invention is to provide simple, reliable rand effective means, whereby the hammer is automatically prevented from firing the gun untill such time as the bolt has been moved'fully into its breech-closing position.

With the foregoing and other objects in view as will appear from the following, my invention consists in a slide-action firearm having certain combinations and arrangements of parts as will more fully appear from the following and be finally claimed.

In the accompanying drawings:

Fig. 1 is a broken view mainly in side elevation of a slide-action'irearm construct# ed in accordance with my invention, the slidehandle and immediately associated parts being shown in vertical longitudinal section;

Fig. 2 is a broken view in side elevation of the receiver portion thereof,l with the receiver cover-plate removed, and the buttstock, barrel and magazine broken away, theA parts being shown in the positions which they assume when the bolt is moved into its fully open or retracted position;

1932. Serial No. 629,413.

Fig. 3 is a corresponding view but showing the parts in the positions which they assume when the bolt is about midway in its forward travel toward its closed position;

Fig. 4 is a similar view but showing the parts in the positions which they assume after the bolt has been moved from the position in which it is shown in Figi 3 into its fully closed position;

Fig. 5 is a similar view showing the parts inthe positions which they assume at the instant the hammer strikes the firing-pin;

Fig. 6 isa similar view showing the parts in the positions which they assume after lthe gun has been fired and after the recoil has taken place;

Fig. 7 is a similarview showing thebolt in its closed position and the hammer in its fully cocked position, and the slide-locking member manually tilted by means ofthe release-plunger to permit the retraction of the bolt without having previously released the hammer from its cooked position;

Fig. 8 is a vertical transversev sectional view taken on the line 8-8 of Fig. 2;y

Fig. 9 is a similar view taken on the line 9 9 of Fig. 2; AY 1 Fig. 10 is a vertical transverse sectional view taken on the line 10e-10 of Fig. t;4Y

Fig. 11 is a vertical transversev sectional view taken on the line 11- 11 of Fig. 7

Fig. 12 is a broken ldetail `sectional View taken on the line 12-12 of Fig.2;

Y Fig. 13 is a detached; y

Fig. 14 is a similar view of the slide-locking member detached, together with its operating-spring and the mounting-studs for the latter;

Fig. 15 is a broken perspective view of the.

rear end of the operatingl slide bar;

Fig. 16 is a perspective view of the oscilff lating plunger-guide detached;

perspective View of the hammerv Fig. 17 is a similar view of the.tensioning-,`

link detached;

'.Fig. 18 is a similar view of the plunger orhammer-spring guide-rod detached;V and ,l Fig. 19 is a similarview of the manuallyoperable release-plunger detached.

Tne particular slide-action firearml herein projecting laterally from said tensioning-link is laterally offset and has secured to it a spool-like tensioning-studv way of its length with an upwardly-and-for-r wardly-sloping guard-finger 82 for the purpose as will hereinafter appear. `At its forward end the said member 79 is provided with an upwardly-extending wedge-shaped slidelocking nose 88. The sloping forward end 84 of the slide-locking member 79 is adapted to act as a locking-abutment, as will hereinafter appear` and is formed with a forwardly-osetting semicircular retaining-lip 85 adapted to slide within an undercut groove 86 formed in the left side wall r82 of the receiver 20. j

Projecting laterally from-the right hand side of the slide-locking member 79 just forward of the guide-slot 78 therein is a stud 87 across which extend the complementary rearwardly-projecting arms 88 and 89 of a slidelock operating-spring generally designated by the numeral 90 and including a looped portion 91 encircling a mounting-stud 92 the right side of the said slide-locking member 79 immediately forward of the stud 87 thereon. The arms 88 and 89 of the operating-spring 90 may be respectively described as an unlocking arm and a locking arm inasmuch, as will appear from the following, they respectively discharge the functions ascribed to them when alternately tensioned as will appear. The freeend of the arm 88 normally engages with the groove 76 in the stud 75 carried by the` tensioning-link 7 3 and normally presses downwardly upon the said stud. Similarly. the free end of the arm 89 is normally.en-

gaged with the groove 76 in the said stud and I normally presses upwardly upon the latter.

The guard-finger 82 of the slide-locking member 79 is adapted under certain conditions to be moved over the upper forward corner 93 of a guard-ledge 94 formed upon the left side of the hammer 52 when the same'v is in its rearwardly-swung position and is adapted to be engaged by the co-rner 93 of the said ledge to guard against the movement ofy the saidhammer prior to the movement of the bolt 83 into its fully closed and locked position, as will more fully appear from the following.

For the purpose of enabling the user of the gun to unlock the bolt 33 and move the same into its fully retired position, as shown in Fig. 2, without first requiring the release ofthe hammer 52, I provide manually-operablemeans for rocking the slide-locking member 79 to withdraw its slide-locking. nose 83 from the path of the operating slide-bar 30 and out of engagement with the rear end V98 of the said slide-bar 30, which is sloped to .correspond to the y.slope ofthe forwardV end 84 of the said member 79 for the purpose of j securing ya frictional Aengagement .between the two said surfaces, aswill hereinafter appear. lIhe means referred to as herein shownin Figs. 7, 11 and 19 consists mainly of a vertically-reciprocating releasing-member 95 which includesy a .nger-button 96 and a cylindrical upwardly-extending shank 97` adapted to engage the under surface of the releasing nger 81 extending laterallyfrom therear end of the slide-locking member 79, as before described.

As shown particularly well in Fig. 15, the operating slide-bar 30 is formed in its right under corner with a longitudinal 'Y groove99 terminating at its rear end in a downwardly-curved Vcam-surface 100 adapted to cam the slide-locking nose 83 of the' slide-locking member 79 downward as the said slide-bar is moved -forward from its rearmost position for the purpose as will hereinafter` appear.

For the purpose of normally maintaining the rear end 98 of the operating slide-bar 8O in frictional engagement with the similarly-sloped forward end 84 of the slidelocking member 79 when the breech is Iin its fully closed position, I employ a sheetmetal spring 101 which encircles the tubular magazine 27 vand has itsrespective ends laterallv ofset' in opposite directions, -as shownl in Fig. 1.'V One of the laterally-offset ends of the said spring 101` engages the'forward end of a collar 102 soldered, brazed, or other firearm herein chosen for illustration, let it be'V presumed that the slide-handle 28 Lhas been manually moved to the limit of its rearwardmovement, with the effect of moving the parts into the positions in which they are' shown in Fig. 2, in which figureV it will be noted that the bolt is fully retired,`so that aV cartridge maybe introduced into the cham- Y ber 46 either directly orfrom theV magazine 27 by means 4of suitable mechanism (notv shown).

If, now, the slide-handle 28 is moved forwardly so as to move the bolt from the position in which it is shown in Fig. 2 into the position in which it is shown in Fig. 3, the cam-surface 100 on the operating slide-bar 30 will have engaged the nose 83 of the slidelocking member 79 with the effect of depressing the same and thereby rocking the entire slide-locking member about its pin 8().in a clockwise direction, with the effect of causing the guard-nose 82 of theV said member 79 to move into camming engagement with the corner 93 of the guard-ledge 94 of the hammer 52 to thus further depress the said ha1n mer and cause its Sear-abutment 56 to move slightly out of Contact withthe Sear-nose 57 of the trigger 59, though the said Sear-nose remains in the path of the said abutment, as will clearly appear by reference to Fig. 3.

The clockwise rocking of the slide-locking member 79 by the cam-surface 100 of the operating slide-bar 30, as just above described, will serve to further tension theV arm 39 of the operating-spring 90, so that the said arm will be exerting a constant effort to swing the locking-member 79 in a coimterclock wise direction.

The continued forward movement of the slide-handle 23 to the limit of its Vforward movement, in which the spring 101 is placed under tension, will move the bolt bodily for ward and rock the same upwardly into its locked position, as shown in Fig. f1. During the forward travel of the operating` slide-bar incident to the movement of the bolt into its fully closed position, as just described, the rear end 98 of the said slide-bar 30 will be moved forwardly of the forward end 84: of

the slide-locking member 79 and thus permit the already tensioned arm 89 of the spring 90 to rock the member 79 in a counterciockwise direction and move the nose 83 thereof upwardly into the path of the said slide-bar 30.

Upon the release of the forward manual thrust upon the slide-handle 28 the spring 101 will assert itself and cause the rear end 98 of the'slide-bar 30 to frictionally engage with the forward end 84 of the slide-locking member 79 to frictionally hold the same in the position in which it is shown in Fig. l for thepnrpose as will hereinafter appear. As the slide-locking member 79 is rocked in a` counterclockwise direction, as just described, its guard-nose 82 will thereby be moved out of engagement with and out of the` path of the corner 93 of the guard-ledge 94 and thus permit the hammer 52 to swing to a slight degree in a clockwise direction to reengage its Sear-abutment 56 with the searnose 57.

As the operating slide-bar 30 is moved forwardly from the position in which it is shown in Fig. 3 into the position in which it is shown in Fig. Ll, its stud 34 will have engaged the elosing-andlifting cam-surface 37 of the bolt 33 so as to first move the said bolt to the limit of its forward movement and subsequently tilt the rear end of the same upwardly to'engage the rear surface of its locking-lug- 39'with the rear wall of the locking recess 40. After the bolt has been moved forwardly and tilted, as just described, the stud 34: will under-ride the locking-surface 38 thereof and support the bolt in its locked position.

Wlith the parts in the positions shown in Fig. @the gun is in condition for firing, which may be effected in the usual manner hya rearward draft upon the 1inger-piece 61 of the trigger 59,

The rearward draft upon the linger-piece Gl of the trigger will disengage the Sear-nose 57 from the searabutment 56 and thus permit the hammer-spring 69 to drive the hantmer 52 in a clockwise direction and cause the upper portion of its forward face to iinpinge against the rear end 43 of the firing-pin 42, as shown in Fig. 5, which illustrates the position of the parts at the instant the said hammer engages with the said firing-pin and just prior to the forward travel of the latter to lire the cartridge.

As the hammer 52 is swung in a clockwise direction as just above described, the plunger (if-l will have moved bodily forward in the passage 65 of the guideanember G6 and will, at the same time, have been rocked slightly in a counterclockwise direction, as may be observed by comparing Fig. 4 with Fig. 5. rlhis movement of the plunger 64 will serve to erect, so to speak, the tensioning-link 73 and cause the stud 75 thereof to move upward, out of engagement with the arm 89 of the operating-spring and to further tension the arm 88 thereof. The last mentioned arm will, as thus tensioned, exert an effort to swing the slide-locking member 7 9 in a clockwise direction and, therefore, tend to move the locking-nose 83 out of the path of the operating slide-bar 30. However, owing to the rearward pressure exerted upon the said slide-bar 30 by the spring 101, the frictional engagement between the rear end 98 of the said slide-bar and the forward end 84 of the member 79 will be suicient to prevent the tension of the arm 88 of the spring 90 from effecting the clockwise turning of the member 79 just referred to until such time as recoil takes place, as will be presently described.

As the hammer `52 drives the firing-pin 42 forwardly from the position shown in Fig. 5 to that shown in Fig. G (which movement requires but a fractional part of a second), the gunrwill be fired, with the effect of causing the same to recoil and, owing tothe fact that the slide-handle 28 is slidably mounted upon the magazine 27, the said slide-handle and its vrigidly connected parts including the operating slide-bar 30will, due to their inertia, and despite the tension of the spring 101, not immediately partake of the lrearward movement of the remainder of the firearm under the action of the recoil just referred to, but will, despite the tension of the spring 101, lag behind, with the effect that the slide-locking member '79 (which immediately partales of the recoil action) will move rearwardly relative to the said slide-bar 30 .and disengage the forward end 84 of the former frompthe rear end 98 of the latter, whereupon the slidelocling member will immediately turn in a clockwise direction under the urge vof the arm 88 of the operating-spring 90, so that the slide-locking nose 83 will be fully retired out of the path of the operating slide-bar 30.

The operating slide-bar 30 having been unlocked, as above described, may now be moved rearwardly by means of the slide-handle 28 and effect the retirement of the bolt 33 for the purpose of extracting the now fired cartridge from the chamber 46 and to permit the introduction of a fresh cartridge thereinto. I

As the slide-baris moved rearwardly for the purpose just above described, thestud 34 thereof will move rearwardly out from under the bolt-locking surface 38 of the L-shaped cam-grove 35 of the bolt and into engagement with the depressing-and-retractingV cam-surface 3Gthereof, with the effect of first rocking the rear end of the said bolt downwardly to disengage its locking-lug 39 from the locking-recess l0 and then moving the said bolt bodily rearward and ultimately into the position in which it is shown in Fig. 2. As the bolt 33 is moved rearwardly,f as above described, the rear end 43 of the firingpin L.t2-.will rst be engaged with the hammer 52, with the effect of starting the swinging movement of the lsame in a counterclockwise direction against the tension of the spring 69. As the hammer rocks rearwardly, as described, it will subsequently be engaged by the chamferedl surface 51 and ultimately by the top wall 50 of the hammer-receiving groove-49 in the said bolt, with the effect of tilting the said hammer sufficiently to cause its sear-abutment to move over the searnose 57 and-slightly past the forward end thereof. y

As the hammer 52 is swung yin a counterclockwise direction as just'above described, the spring 69 will be further compressed and the plunger' 64 will be moved rearwardly Y through the passage in the guide-member 66, with the e'ect of canting the tensioninglink 7 3 and drawingits stud 7 5 downwardly. As the stud is'moved downwardly as just described, it will ride away from the vupper arm 88 of the operating-spring-90 and will place additional tension on the lower arm 89 thereof to thus tend to rock the slide-locking member 79 in a counterclockwise direct-ion.

At substantially the same rtimethat the rear end of the guard-ledge 94 of the hammer 52 Vreaches the forward end of the guard-finger 82, the rear end of the groove 99 in the slidebar 30 will have been brought into lineV with 'the locking-nose 83 of the member 79,whereupon the said nose will rise under thetension of the arm'89 andthe said member 79 ,willv turn in a countercloclwise direction to agde'- gree sufficient to retire the guard-finger 82 out of the path of the said ledge 94 and thus permit the hammer to pass rearwardly and downwardlyinto its fully retired position.

t The parts will now have reassumed the'positions in which they are shown in F ig. 2, preparatory to another cycle of operations cor- 1 responding to that already described.

In the event that after the gunis cocked "f and the breech closed, it should for any reason be desired to move the bolt into its fully retired position such, for instance, as to veX- tract *an unfired shell from the cartridge chamber, this may be accomplished without fr releasing the hammer by an upward pressure' exerted upon the linger-piece 96 of the releasing member 95 to cause its shank97 to engage the under face of the releasing-linger 81 of the slide-locking member'79 an'd'thus f rock the latter member in a clockwise direc- Vtion to forciblyV depress its locking-nose 83 and movethe same out of the path of the operating slide-bar 30,' as shown in Figs.` 7 and 11.

With the locking-nosel of the member 7 9 retired as just above described, the slidehandle 28 maybe movedrearwardly and Y causing the hammer to shift the slide-lock- 1- ing member into and out of its slide-'locking positions through the intermediary of the Vies operating-spring 90 or equivalent yielding means, substantially the entire swing of the hammer may be utilized toeifect the shift referred to, which latter is effected, asalreadydescribed, by the energy stored in the said operating-spring. Thus, a smoothness of actionis obtained and a Vminimum impedance to the movement of the hammer is imposed at. any' given positionA thereof' throughout its fullswing.

' It will be understood physical forms without departing from my inventivevconcept, and I, therefore, do not limit my invention to the specific embodi-` ments herein chosen for illustration, 'but only' as indicatedV in the appended claims.` I claim:

1. YIn a slide-action firearm, the combinaby those Skilled in. Vthe art that my invention may assume varied ing memberfor locking thesaid .manual op# erating means; and means for causing the said hammer to shift the saridloelnng memh ber into and out `of its loclingpositions includi-ng a- .plunger operatively connected to the. said hammer, a` tensioning-link opera-- tively connected to the said plunger kand `yielrling lspring l means operatively inter. posed between the said tensioningeli-nl and. the said locking member. f

. 2: In. a slide-actioniirearm, .the combina.r tion with the operatingslide, slide-'locking rmember and hammer thereof; of operating means for :causing the said hammer to-slnft the. said slide-locking member into and out lof its slide-locking positions, including a plunger. pivot-ally: `connected yto the said hammer, a tensioning-link pivotally conneczt-k ed to the ksaid plunger-,and yielding spring :means: operatively interposed `between c `the said tensioningdinlr and the said slide-locking member.

3. In a Slideactionrearm, the combina'- tion .with .the operating slide, oscillating slide-locking member and hammer thereof.; of operating means for causing the .said hammer to rock the rsaid slide-locking member into and out of :its'slide-loeking positionm including a plunger `pivotally connected `to .the said. hammer,a tensionmgelinlr pivotally connected kto the said plunger, and yield*-k ing spring means operatively interposed between the said tensioning-linlrand the said oscillating slide-loclring member.

4:. In a slide-action firearm, the combination with the operating slide, slide-locking member and hammerthereof; of operating means for causing the said hammer to shift the said slide-locking member into and out of its slide-locking positions, including a reciprocating and oscillating plunger pivotallyconnected to the said hammer, a tensioning-link pivotally connected to the said plunger, and yielding spring means operatively interposed betWeen the said tensioninglink and the said slide-locking member.

5. In a slide-action firearm, the combination with the operating-slide, oscillating slide-locking member and hamm-er thereof; of operating means for causing the said hammer to rock the said slide-locking member into and out of its slide-locking positions, including a reciprocating and oscillating plunger pivotally connected to theV said hammer, a tensioning-link pivotally connected to the said plunger, and yielding spring means operatively interposed between the said tensioning-link and the said oscillating slidelocking member.

6. In a slide-action firearm, the combination with an operating slide, slide-locking member and hammer thereof; of operating -means for `causing.the said hammer to shift the said slide-locking member into and out of its slide-locking positions, including-a re- .ciprocatingand oscillating .plunger pivotally connected to thefsa-id hammer, an oscillating guide member for the said plunger, a tensioning-link .pivotally' connected to the. said f.

plunger, andk yielding Ispringmeans .operatively inter-posedl between `the said tension- -ingdinlr and the said slide-locking member.

7. In a slide-action firearm, the combinationivith an .operating slide,oscillating slidea locking member .and hammer thereof; of op- @rating means for causing the said `haimner tof roclr thesai-d. locking .member into. and

`out of its slide-locking positions, including a reciprocatingand oscillating plunger pivot` allyconneeted tothe said hammer, an oscillating guide member for` the. said plunger:,-a tensioningdi-nlr pivotally` connected to the saidplungcr, and yielding. spring means operatlvely interposed bet-Ween `the said tensierung-linkand the. said. oscillating slidelocking member.`

8. In a slide-action firearm, the combination with the operating slide, slideslocking` member and hannner thereof; of operating.-

means for causing thesaid hammer. to shift the said slidcdmking`mcmber into and .out of its slifli-,-l f :l i|1g positions; including a piu-nger pivotally connected to the said hamw mer, a tensioningliuk `pivotally connected. to

the said plunger, and yielding spring-means 1 .carried by the sai d shdefloclnng member and `opera tively kinterI-)osedbetween. the same f and the said tensioning-link.

9. In a slide-action firearm, the combination with the operating slide, oscillating slide-locking member and hammer thereof; of operating means for causing the said hammer to rock the said slide-locking member into and out'of its slide-locking positions, including a plunger pvotally connected` to the said hammer, a tensioning-link pivotally connected to the said plunger, and yielding spring means carried by thesaid oscillating Slide-locking member and operatively interposed between the same and the said tensioning-link.

10. In a slide-action firearm, the combina tion With the operating slide, slide-locking member and hammer thereof; of operating means for causing the said hammer to shift the said slidellocking member into and out of its slide-locking positions, including a plunger pivotally connected to the said hammer, a tensioning-link pivotally connected to the said plunger, a stud carried by the said tensioning-link, and yielding spring means operatively interposed between the said stud and thesaid slide-locking member.

11. In a slide-action firearm, the combination with the operating slide, slide-locking member and hammer thereof; of operating means for causing the said hammer to shift the said slide-locking member into and out of .its slide-locking positions, including a plunger pivotally connected to the said hammer, a tensioning-link pivotally connected to the said plunger, and unitary double-armed spring-means interposed between the said tensioning-link and the said slide-locking member.

13. In a slide-action firearm, the combination with the operating slide, slide-locking member' and hammer thereof; of operating means for causing the said hammer to shift the said slide-locking member into and out of its slide-.locking positions, including a plunger pivotally connected to the said hammer, a tensioningelinlr pivotally connected to the said plunger, and unitary double-armedy springuneans carried by the said slide-locking member and operatively interposed be- 'ween the same and the said tensioning-link.

letA In a slide-action firearm, the combination with the operating slide, slide-locking member and hammer thereof; of operating means for causing the said hammer to shift the said slide-locking member into and out of its slide-locking positions, including a plunger' pivotally connected to the said hammer, a tensioning-link pivotally connected to the said plunger, a grooved stud carried by the said tensioning-link, and unitary doublearmed spring-means carried by the said slidelocking member and having complementary arms respectively normally engaged with the said grooved stud.

l5. In a slide-action firearm, the combination with the operating slide, slide-locking member and hammer thereof;V of operating means for causing the said hammer toshift the said slide-locking member into and out of its slide-locking positions, including a plunger' pivotally connected tothe said hammer, a tensioning-link pivota iy connected to the said plunger and having sliding connection with the said slide-lccking member, and yielding spring means operatively interposed between the said tensioning-link and the said slide-locking member.

16. In a slide-action firearm, the combination with the operating slide, slide-locking member and hammer thereof; of operating means for causing the said hammer to shift the said slide-locking member into and out of its` slidelloc-king positions, including a,Y plunger pivotally connected to the said hammer, a-tensioning-link'pivotally connected to the said plunger and having sliding connection with the said slide-locking member, and unitary double-armed spring-means carried by the said slide-locking member and operatively interposed between the same and the said tensioning-link.

17. In a slide-action firearm, the combination with the operating slide, slide-locking member and hammer thereof; of operating means for causing the said hammer to shift the said slide-locking member into and out of its slide-locking positions, including a reciprocating hammer-spring guide-rod, a spring encircling the lsaid guide-rod for moving the same together with the said hammer, a tensioning-link pivotally connected to the said guide-rod, and yielding spring means operatively interposed between the said tensioning-link and the said slide-locking member. f i

18. In a slide-action firearm, the combination with the operating slide, vslide-locking member and hammer thereof; of operating means for causing the said hammer to shift the said slide-locking member into and out of its slide-locking positions, including a reciprocating y hammer-spring guide-rod, a

' spring encircling the'said guide-rod for moving the same together with the said hammer, a tensioning-link pivotally connected to the said guide-rod, and unitary double-armed `spriiig-means carried by the said slide-lock-v ing member and operatively interposed between the same and the said tensioning-link.

19. In a slide-action firearm, the combination with the operating slide, slide-locking member and hammer thereof; of operating means for causing the said hammer to shift the said slide-locking member into and out of its slide-locking positions, including a reciprocating hammer-spring guide-rod pivotally connected to the said hammer, a spring encircling the said guide-rod for moving the same together with the said hammer, a tensioning-linl'pivotally connected to the said guide-rod, a grooved stud carried by the said tensioning-link, and unitary'` double-armed spring-means carried by the said slide-locking member and having complementary arms normally engaged with the said grooved stud.

20. In a slide-action firearm, the combina- Y tion with the operating slide, slide-locking member and hammer thereof; of operating means for causing the said hammer to shift the saidslide-locking member into and out of its slide-locling positions,`including a reciprocating and oscillating hammer-spring` guide-rod pivotally connected to the said hammer, an oscillating guide member for the said guide-rod, a spring encircling the said guide-rod and bearing against the said oscillatin g guide member, a tensioning-link pivotally connected to the Said guide-rod, and doub1e-armed sprngmeans carried by the said slide-looking member and operatively interposed between the same and the said tensionngJnk.

In testimony Whe1eof,l have signed this specification.

XVILLIAM C. KOERIER-

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