US1987402A - Single trigger mechanism for double barrelled firearms - Google Patents

Description

Jan. 8, 1935. H, E. HOWLAND -r AL 1,987,402

SINGLE TRIGGER MECHANISM FOR DOUBLE BARRELLED FIREARMS Filed July 13, 1932 Q 2 Sheets-Sheet 1 1935- H. E. HOWLAND ET AL 1,987,402

SINGLE TRIGGER MECHANISM FOR DOUBLE BARRELLED FIREARMS Filed July 13, 1932 2 Sheets-Sheet 2 Tied I i i 351 ,35, I tr H 1 9 7 2 t V R f V 1,987,402 M SINGLE TRIGGERLMECHANISM FOEDOUBLE BARRELLED FIREARMS j Har y E. mea t and- Nestor F, Smith, Ithaca, N. Y ass'ignors to. Ithaca Gun Company,

Ithaca,N.Y. f f f i v Application July 13, 1932, Serial No.622,336' I SClaims. (01.42 42) I W N 'I'hisinvention rela,-testocertain new and usehand firing mechanism operated, the slide being; ful-irnprovements in single trigger mechanism for pivotally raised rearwardly of theisear ofthe'sece, doublebarrelled firearms-. I I A nd or lefthand firingamechanism'with the:iner-.- TheprimaryobjeCt oftheinvention is to pro-; tia piece movedrearwardlyxto. overlie: thesearof 5 vide asingle trigger mechanismfor double bar thesecond firing mechanism to prevent unintene- 5"" relled' firearm's, the trigger niechanismbeing nontional firing? thereof;

seI'ect'iVe'and: firing from right tofleit it being Figure 3 is a fragmentary'sideelevational view; understood however,-;that the; firing mechanism similar to Figure; 2, showing the trigger-released associatedwith each barrel may be so designed to after operation of the firstfiring mechanism the permit the firing to be from leitto right. slide lowered and moved forwardly'to engage'ibe 10 A further object of the inventionis toprovide heath the sear of'the' second or left hand' firing a: firearm of the double barrelIed typejembodymechanismfor the operation thereof; j j i1'1'g single trigger mechanismfor each barrel Figure 4 is a cross-sectional "View taken on with a slide member controlledinits action by line 4-4 of Figure 3; showing the slide forming the firstfiring mechanism jtq iorm an interlockinterlocking connection between the singletrig- 15' ing connection between thesingle trigger and, ger and the'searo-f the second firing mechanism the-second firing mechanismfwith the slide guidmovable in a slot formed inthe bottom aller. ed in its movement through a slot in the lower lower tang of theigunframe and' in a biockirisingf tang or bottom wall ofthegun frame and also] from the bottom wall or tang; and H J guidedin itsmove through a passageway 'orslot Figure 5" shows perspective yiews of thejfir-JO ina'block member rising from'thelower tangs. ing mechanisms; f I j1 A further object of-Ythe in iientionisto provide Referringmore in detail to thei'accompanyii igj a; firearmo'f the foregoing character wherein the; drawings, there I is' illustrated a" single trig er? slide memberthat "forms anfinterlockingjconnec mechanism fordoubie barrelled firearms wheretibn between the single trigg r and" the searbf in the firearm includesa gun frame lolprovided'f the second'firing mechanismisin constant operawith right and left barrels .1'1 andflzrespec tive; relation with respect to the trigger with tiv ely; thefirearm beingofthebreak-donortype meansto 'permit"pivotal"movement'oftheslide embodying a. toplever 113;with upper andloweri" when thet'riggeris initiallyoperatedforthe firtangs 14 and- 15 respectively projecting rear?" ing-of theyfirstfiring'- mechanism, theconnection wardlyof thejframe 10': Thejextreme: rear ends 30 between "the slide and"t'rigger being of a type of the-upper anddower tangsM and 15 318 con to permit 'sliding mbvem'ents of the slide indenected by; aibolt' 16 while "the tangs arefurther" pendently of the trigger. 1 l connected' together and *bra cediintermediate It is a iurtherobject of the invention to protheir-ends by the; boltfill dependingjfrom the] vide afi'rearm of the foregoing character whereuppertang 1 4' and engagedfatitsllowerend with 135- in' the sear ofjthe secondfiring mechanismhas a the bloek 18 risingfrom 'the' lower'tank 1-5. The 7 block member'rising therefrom to be engaged by referencenumeral 19' ,designates a" part of the N atensioned inertia piecepivotall'y suspended from bolting mechanisni of the gun and extends rear the uppertang oi the frameto prevent unintenwardlypitheframe portiondfl' to occupytaposie;

* tional firing operation of thesecond firing mechtion between the upper and'lowerjtangs' l ifaridi-4n anism inthe presenceof recoil during operation 15. v of thefirst firingmechanism. v v 1 The trigger '20 carries a plate" '21 "extending; With the above and" other objects in View that through a slot 22 pr0vided' in the" lower tang I15 k,

will'becomeapparent asthe nature of theinven and also through the sIot' 22a in theblo'c'k 18f tion is {better understood, the same consists in asshown in Figure 4, the triggerp1ate21 .having 345" the novei'fiorni;combination and arrangement an opening 23in one endthereof as shown in ofpartshereinafter more fully described, shown Figure 5 for pivotal mounting ;on the pin 24 p inthe acbompanying drawings and claimed: carried by the block 18} The firing mechanism; In for the right hand-barrel 1]. inciudes aham'mei he drawings'F- =F igiirbill is arra memary sidefelevational view 25 having a notch 26 adjacentitspivotaiend1 ofthe gun frame and portions of the barrels with to be engaged by; the end 27 of the sear 28 that the mech incocked positions, loohis -pivotall'y mounted as at 29. cross pin; is

ing 'at the righ eof thegun; r j carried by the pupp ri dee" oi th trieeerplat Figurezi agmentarysideelevational view" 21* and projects at oppositef-sides thereof as :at

positioned beneath the free end of the sear 28 a lateral arm 38 directed toward the sear 28 and positioned rearwardly of the'block 18. For purposes presently to appear, the rear end of the sear 36 carries a block 39 rising therefrom.

The cross pin carried by'the trigger plate for the operation of the sear'28 of the right hand firing mechanism moves in a zone spaced from the operative end of the sear 36 of the left hand firing mechanism and to form communication between the cross pin on the trigger and the sear of the left hand firing mechanism, there is provided a slide member illustrated in the several figures and in detail in Figure 5as including a plate'40 having a straight lower edge 41 moving in the slot 42 parallel with the slot 22a in the block 18 and also in the slot 42a in the lower tang 15.. The slideplate 40 is permitted both sliding and pivotal movementby' means of the slot 43 in the plate 40 receiving the trigger pivot pin 24. In view of the location of the bolting mechanism 19 rearwardly of the frame 10 and between the upper and lower tangs 14 and 15, the forward'end of the slide plate 40 has been designed to escape the bolting mechanism in its sliding movement andfor operative engagement with the hammer 25 of the right hand firing mechanism, the forward end of the slide plate 40,carrying angle rm extensions 44 and 45 with the free end of the arm 45 engaged with the hammer'25 so that when the hammer ,25 is in cocked position, the slide plate 40 is moved rearwardly,guided insuch movement by the pivot pin 24'of the trigger and also by the slots 42 and 42a in the block 18 and tang 15, the slide plate 40 moving rearwardly against tension of the spring 46 shown in Figure 2. The connection between the trigger pin 31 an slide plate 40 includes an upper opening slot 47 in the rear end of the trigger plate 40 into which the trigger pin 31 extends and is confined therein by the. forwardly extending lug 48 shown in Figures 2, 3 and 5 as overhanging the slot 4'7. The firingniechanisms are provided with a safety device for rendering them inoperative, the safety device being manually operable while the usual rod associated with the bolting mechanism for the automatic setting of the safetydevice had to be done away with to provide a clearance for the mounting of the coil member or inertia piece. The inertia piece 49 of triangular formation is pivotally suspended as at 50 from the upper tang -14,. being tensioned as at 5l and mounted with relation to the block 39 carried bylthe sear 36 of the left hand firing mechanism to be moved to .a position overlying the block 39' during recoil action to prevent accidental firing of the second firing mechanism, the inertia piece 49 carrying a stop lug 52 for limiting recoil movement of-Hthe inertia piece and assuring a recoil position thereof during action. The safety for the firing mechanism includes a block 53 pivotally mounted as at '54 upon the lower tang 15 and as shown in Figure 1, carries a laterally projecting pin 46 to be moved to a position overlying thetrigger plate 21 by means of the leg 55 of a bell crank lever that is pivotally mounted as at 56 upon a, bracket 57 rising from the tang 15 with the other leg 58 ofvthe bell crank lever operated by a slide 59 disposed above the upper tang 14 and guided in its movement on the guide members 60 of the gun as illustrated in Figure 1 in its cocked position. With the hammer 25 cocked, the slide plate 40 is moved rearwardly against the tension of the spring 46, the slide plate being guided in its movement through the slots 42 and 42a in the block 18 and tang 15 with the upper rear end 40a of the-slide plate 40 positioned rearwardly of the lateralarm 38 carried by the sear 36 of the left hand or second firing mechanism, but when the slide p1ate40 is at its limit of rearward movement, the cross pin 31 carried by the trigger plate 21 is still engaged in the slot 47 of the plate 40 so that when the trigger 20 is operated for releasing the right hand or first firing mechanism, the slide plate 40 pivotally moves upon the pivot pin 24 of the trigger that passes through the slide plate slot 43 with the rear end 40aof the slide plate-moving upwardly but escaping the lateral arm 38 on the sear 36, this position being illustrated in Figure 2. When the right hand firing mechanism is released as illustrated in Figure 2, the inertia piece 49 swings to the position as illustrated above the block 39 carried by the sear 36 to prevent accidental operation of said sear. When pressure on the trigger is relieved, the spring associated with the sear 28 restores the trigger to the position shown in Figure 3 and at which time the spring 46 moves the slide plate 40 forwardly to position,

the upper end 40a of the slide platebeneath the cross arm 38 of the sear 36 for the operation of the sear of the left hand or second firing mechanism. As stated, the slide plate is guided in its movement through the slot 42a in the tang 15 and through the slot 42 in the block 18, the forward angle arm extensions 44 and45 on the slide plate being provided for clearing the bolting mechanism 19 so that the free end of the arm 45 is positioned for engagement with the hammer 25 to be controlled in its operation by said hammer. I

While there is herein shown and described the preferred embodiment of the invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

1. In a double barrelled firearm, wherein a separate firing mechanism is provided for each barrel and including a hammer and a sear, wherein a single trigger, is-in constant operative relation to one sear and wherein a single slide member is adapted to form connection between the trigger and sear of the other firing mechanism, the gun including aframe carrying upper and lower tangs and the lower tang having a slot therein forming a guide for the slide member, and 1 separate firing mechanism is provided for each barrel and including a hammer and a sear, wherein, a single, trigger is in constant operative relation to one sear and wherein a slide member is adapted to form connection between the trigger and sear of the other firing, mechanism, the gun including a frame carrying upper and lower tangs and the lowertang having a slot therein forming a guide for the slide member, said'slide member having a slot therein receiving the pivot pin of the trigger and by which the slide is retained in position, a pin and slot connection between the trigger and slide member whereby the slide member is pivotally movable with thetrigger during each operation thereof, a block and post con-' nection between the upper and lower tangs and said block having slots therein aligning with the slots in the lower tang and through which the slide member andtrigger move.

3. In a double barrelled firearm, wherein a separate firing mechanism is provided for each barrel and including a hammer and a sear, wherein a single trigger is in constant operative relation to one sear at one side of theframe and wherein a slide member at the otherside of the frame is adapted to form connection between the trigger and sear of the other firing mechanism, the gun including a frame carrying upper and lower tangs and the lower tang having a slot therein forming a guide for the slide member, and an angle arm extension onthe forward end of the slide member with the terminal end of the extension engaged with the hammer of the first firing mechanism at the other side of the frame permitting forward sliding movement ofthe slide member into position for mechanism.' p

4. In a double barrelled firearm, wherein a separate firing mechanism isprovided for each barrel and including a hammer and a sear, wherein a single trigger is in constant operative relation to one sear and wherein a slide member is adapted to form connection between the trigger and sear of the other firing mechanism, the gun including a frame carrying upper and lower tangs and the lower tang having a slot therein forming a guide for the slide memben said slide member having a slot therein receiving the pivot pin of the trigger, a pin and slot connection between the trigger and slide member whereby the slide member is pivotally movable with the trigger, and an angle arm extension on the forward end of the slide member with the terminal end of the extension engaged with the hammer of the first firing mechanism permitting forward sliding movement of the slide member.

5. In a double barrelled firearm, wherein a separate firing mechanism is provided for each barrel and including a hammer and a sear, Wherein a single trigger is in constant operative relation to one sear and wherein a slide member is adapted to form connection between the trigger and sear of the other firing mechanism, the gun including a frame carrying upper and lower tangs and the lower tang having a slot therein forming a guide for the slide member, a block and post connection between the upper and lower tangs operation of the second firing and said block having slots therein throughwhich the slide member and trigger move, and an angle arm extension on the forward end of the slide member with the terminal end of the extension engaged with the hammer of the first firing mechanism permitting forward sliding movement of the slide member.

6. In a double barrelled firearm, wherein a separate firing mechanism is provided for each barrel and including a hammer and a sear, wherein a single trigger is in constant operative relation to one sear and wherein a slide member is adapted to form connection betweenthe trigger and sear of the other firing mechanism, the gun including a frame carrying upper and lower tangs and the lower tang having a slot therein forming a guide for the slide member, said slide member having a slot therein receiving'the pivot pin of the trigger,-a pin and slot connection between the trigger and slide member whereby the slide member is pivotally movable with the trigger, a block and post connection between the upper and lower tangs and said block having slots therein through which the slide member and trigger move, and angle arm extension on the forward end of the slide member with the terminal end of the extension engaged with they hammer of the first firing mechanism permitting forward sliding movement of the slide member.

7. In a double barrelled firearm, wherein a separate firing mechanism is provided for each barrel and including a hammer and a sear, wherein a single trigger is in constant operative relation to one scar and wherein a slide member is adapted to form communication between the trigger and sear of the other firing mechanism, the firearm including a frame carrying upper and lower tangs, bolting mechanism between the tangs at the forward ends, a base block and bolt connection between the endsof the tangs, the lower tang and block being slotted to accommodate the mounting of the trigger and slide member and an angle arm extension on the forward end of the slide member to clear the bolting mechanisms and engaged with the hammer of the first firing mechanism.

- 8. In a double barrelled firearm, wherein a separate firing mechanism is provided for each barrel and including a hammer and a sear, wherein a single trigger is in constant operative relation to one scar and wherein a slide member is adapted to form connection between the trigger and sear of the other firing mechanism, the gun including a frame carrying upper and lower tangs and the lower tang having a slot therein forming a guide for the slide member, an abutment block rising from the rear end of the sear of the second firing mechanism and a tensioned inertia piece pivotally suspended above the abutment block to be moved by recoil action into engagement therewith to prevent accidental operation of the second firing mechanism.

' HARRY E. HOWLAND.

NESTOR F. SMITH.

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