US814749A

US814749A - Automatic gun.

Info

Publication number: US814749A
Application number: US25084305A
Authority: US
Inventors: William Trabue
Original assignee: C C MCCLARTY
Current assignee: C C MCCLARTY
Priority date: 1905-03-18
Filing date: 1905-03-18
Publication date: 1906-03-13
Anticipated expiration: 1923-03-13

Description

N0. 814,79. PATENTED MAIL-13, 1906 W. TRABUE.

AUTOMATIC GUN.

APPLICATION FILED MAR.18, 1905.

barren sra rns PATENT, orrron.

WILLIAM TRABUE, OF LOUISVILLE, KENTUCKY, ASSIGNOR OF ONE-THIRD TC DELCZIER MOXLEY AND ONE-THIRD TO C. C. MOCLARTY, OF LOUIS YILLE, KENTUCKY.

AUTOMATlC GUN.

Specification of Letters Patent.

Patented March. 13, 1906.

Application filed iimh 13.1905. Serial No. 250,843.

I gun or istol in which the recoil of the breechbolt W en the gun is fired may serve to eject the spent cartridge and place another in the barrel ready for firin or in which the trigger may be manipulate to effect a like result, in which latter case the spring which resists the recoil whenthe gun is fired need not be compressed. by the manipulation of the trigger. Thus the weapon may be fired slowly shot by shot, entirely by trigger manipulation, or it may be fired in rapid succession until the cartridges are exhausted by the recoil mechanism.

The invention consists in certain constructions and mechanical combinations, substantially as will be described, and pointed out in I the claims.

Figure 1 is a longitudinal centralsection .of a pistol in which my invention is embodied, the breech being shown in closed position. Fig. 2 is a partial elevation andpartial section of the same, the breech-bolt being shown in recoiled or open position. Fig. 3 is a perspective detail view showing arts of the breech-operating mechanism s ightly separated, sothat the construction may be better understood. Fig. 4 is a broken elevation of some of the operating parts of my device, and Fig. i is a broken view of the same parts in difierent position. 5 is a broken sectional detail of the bolt and firing-piece, and Fi 5 is a similar detail of the same parts in a ifierent position. Fig. 6 is a section of a modification of the recoil mechanism, whereby a coiled spring is employed to take up the recoil instead of the flat spring and lever of Figs. 1 and 2. Fig.7 is a detail elevationof the sear-lifting mechanism outside the frame.

The numeral 1 indicates the frame, housing, or receiver. 2 denotes the barrel, and 3 thebreech piece or bolt. bolt cates in the frame. The magazine 4 is under the bolt when the bolt is closed. Cartridges are lifted in the magazine by any suitable follower, as usual inwhat is known as a boxmagazine gun. The follower is not shown, and some other parts are omitted for clearness of illustration, such parts being understood to be of any usual construction.

The breech-bolt 3 has a downwardly-extending arm 49, which is pivotally connected to a link 5, and this link 5 is pivoted to a le- I ver 6, which is pivoted in the frame of the gun, as indicated at 7. The lever 6 has a hook 8, which projects below its pivot. A notched segment 9 is rigid with lever 6. Sega ment 9 has an arm 10, which is piv oted to a short link 1 1, and this link 11 is pivoted to lever 12, which lever 12 is pivoted to the frame or butt plate. A flat spring 13, secured in the frame, presses up against lever 12, thus drawing on link 11 and tending torock the segment 9 and its connected lever 6, so as to close the breech-bolt. It will thus be seen that spring 13 acts on what may be termed a compound toggle-lever to close the bolt but as the toggles of the lever system do not entirely straighten in closing the bolt the bolt is not really, looked in closed position, but is merely pressed forward by the force of spring 13. i

The trigger 15 is pivoted at 16 in the lower part of: the frame. The cocking-hook 17 is pivoted to and carried by the trigger above the pivot 16, and this hook 17 has an upwardly extending arm 18, which arm rides against an incline 19 in the frame. A pull on the trigger causes thchook 17 to engage the hook 8 on lever 6, thus rocking 'the lever 6 and its connected segment on the pivot 7 and causing the breech-bolt 3 to move from closed to open positionthat is, from the position in Fig. 1 to the position in full lines, Fig. 2. When the hook 17 has moved slightly beyond the position shown in Fig. 2, it becomes detached from hook 8, and the spring 13 then becomes operative to close the breech-bolt unless it is held open by other mechanism tobe explained.

The firing-pin 20 is on a pivoted piece- 21,

. which is pivoted in the breech-bolt 3 and has 22, which enoountersan abutment 23.

' frame.

in the frame or at the rear of the barrel as the breech bolt closes, thus bringing the pin against the cartridge to fire the same.

A sear 25 is pivoted at 26 in the frame and extends rearwardly from said pivot, its finger 27 engaging the notches in segment 9 when permitted, and thus acting to hold the toggle mechanism and bolt back, as in Fig. 2. The trigger 15 has a rigid arm 30 extending upward alongside of sear 25 and having a finger 31 extendin over said sear in position to engage an inc ined piece 29 on said sear. A pull on trigger 15 causes the breech bolt to move back, as has been explained. Searfinger 27 then engages a notch in the segment 9 and prevents the closin of the bolt (n0rmally) until the arm 30 0 the trigger (bearing the finger 31) moves forward and causes said finger 31 to engage the inclined piece 29 on thesear, thus lifting finger 27 of the sear from the notch in segment 9 and permitting spring 13 to close the breechbolt, carrying a cartridge into the barrel when closing and firing the cartridge as the closing movement is com leted. The finger of arm 30 rides alon t e face of the inclined piece 29 and is free 0m said'piece 29 at the instant the firing takes place. The pull on the trigger cannot be released quick enough to permit finger 31 to again engage inclined piece 29 while the breech is moving back under the impulse of recoil. The trigger on its release is pressed forward at its lower end by spring 33, acting as usual, the finger 31 thenriding past the piece 29, as is common in sear-and-pawl movements. When it is not desired that the sear 25 shall control the firing movement, the rear end of said sear is lifted so that it cannot enga e the notches in segment 9. This is effecte by means of a slide-plate 40, which has lugs41 and 42 above and below the swinging end of the sear 25.

through a slot in the frame and into a camslot 44- in a slide-bar 45 on the outside of the The slide-bar 15 is guided by a pin 46 on the slidebar, entering a horizontal slot inthe frame, and a screw 47, passing through a horizontal slot in the slide-bar, so that the slide-bar can only move horizontally. Then as the lug 43 rests in the cam-

slot

4,4 the movement of the slide-bar-along the frame by pressure on button serves to lift the plate 40 inside the frame, and this lifts the rear end of the sear 25', so that it cannot engage segment 9. When so lifted, the trigger pull operates to open the breech until hook '17 slips off from hook 8 and spring 13 closes and fires the gun. Thus by placing sear 2 5 in its engaging position the gun may be loaded and fired deliberately by the trigger pull, the pull serving to fire the gun in the same manner as a double'action revolver is fired, while if the sear be disengaged the first A lug 43, projecting from the side of the slide-plate 40, extends cartridge may be loaded and fired by the trigger movement, as has been explained, and then if the trigger be held back the other cartridges will be fired automaticallyin rapid succession, as will be explained.

It has been explained how the backward pull of the trigger releases the hook 17 from hook 8, thus permitting the breech to close, carrying a cartridge forward into the barrel and firing it. The backward pressuremf the cartridge immediately throws the bolt open against the p're'ssure of spring 13. As the bolt moves to the rear it encounters the recoil-lever 50, which .is pivoted to the frame, and is pressed forward by the strong spring 51. The spent shell is ejected by any usual ejector, as is common. The magazine supplies a new cartridge in front of the bolt 3. The spring 51, acting on lever 50, throws the bolt rapidly forward, spring 13' assisting through the (lescribed train of mechanism. When the bolt carries a cartridge into the barrel and fires it, the operation is repeated, and so on as long as there are cartridges in the magazine.

The sear 25 may be held to working position by spring 55, and the finger 27 of said sear may bepressecl to working position by a spring 56, mounted on block 40.

In Fig. 6 I illustrate a recoil-spring 66, on 1 which the bolt acts directly instead of through a' lever-arm, as 50.

In some of the figures l have omitted parts not considered essential, to avoid complication in the drawings.

It will be understood that when the gun is worked by the trigger pull the strong spring .51 is not compressed. The bolt moves to the rear far enoughto permit the feeding of cartridges before compression of this spring takes place. The strong spring 51 when compressed by the breech-block under the sudden impulse of the explosion acts to throw the breech-bolt swiftly forward to closed position, and while the weak spring 13 ma assist this closing movement probably suc assistance is usually not needed but when the gun is workedby the trigger movement the breech does not move back far enough to encounter the resistance of this strong spring.

A loading-gate is shown at the sideof the opening in the frame. to prevent the escape of shells or cartridges except when thrown out by, the ejector. Y

What I claim is 1., The combination, in a firearm, of a bolt,

a trigger and mechanism connected thereto bywhich the breech may be opened by the trigger movement, and a spring acted on by the recoil of the breech-bolt when thrown to a 015111 the combination of the breech- 1 b y 1 nolt tri yer and to le-lever mechanism b 1 v which the boot may be opened by the trigger aiv ent, a seer engaging the mechanism to i :1 l boil; reirscted, and aspring to close belt when the sear is released by further movement.- v

in a gun, the combination of a bolt, an enacting-lever connected thereto, and a string operating to close the bolt under normal conditions of hand mani ulation, and a second spring operating on t e bolt only at extreme rearward movement such as is sensed by recoil, to throw the bolt forward. 7 e. in a gun, a belt, a trigger connected thereto by mechanism whereby the bolt may he opened by the trigger movement, a sear in position to normally engage the mechanism to hold the bolt open, and means outside the.

frame Wherebythese'ar may beheld inoperative and the mechanism left under control of the trigger. I I

5. Inagnn, the combination of the breechclosing bolt, automatic means whereby the bolt may be closed from fnll i'ecoiled position, and a lever mechanism connected to the bolt by which thebolt may be opened iar enough to l'oadwithout engaging the-automatic bolteiosing means. I I

6. In a gun, the combination of a breechbelt, lever mechanism by which the bolt may be opened, it t e'ger engaging said lever mechthe bolt when at the rear of anism to operate the same, a light spring actmechanism operating to open and close the same, a sear engaging said mechanism to hold the bolt open, a sliding piece in the frame by which said seams tlnown out of engagement, and means for locking said sliding piece.

9, In a gun, the breech-bolt and its operating lever mechanism, a seer engaging the mechanism to hold the bolt open,a slidepiece inside theirame by which said sear may be lifted, and a sliding bar outside the frame with which saidslide in the frame engages through a slot in the frame.

.In testimony whereof I afiix my signature in presence of two witnesses.

WILLIAM TRABUE Witnesses:

' W. C. TRABUE, H. C. EEMPLE.