US893839A - Single-trigger double-barrel gun. - Google Patents

Description

No. 893,839, PATENTED vJULY 21, was.

E. M. FUNK. slNGL-E TRIGGER DOUBLE BARREL GUN.

APPLIOATIOH FILED MAE. 28, 1907.

2 SHEETS-GEEFT l.

/VE VS NQ. 893,839. PATENTE) JULY 21, 190s.

E. M. FUNK. www Damm BARREL GUN.

Z SHEETS-SHEET 2.

A' TKO/mfg YS EDGAR M. FUNK, OF WYTHEVILLE, VIRGINIA.

SINGLE-TRIGGER D DUB LE -B AEREI, GUN.

Specification of Letters Patent.

Patented July 21, 1908.

Application filed March 23, 1907. Seria1-No. 364,132.

To all whom it may concern:

Be it known that I, lEDGAR M. FUNK, a citizen of the United States, residing at '.Wytheville, in the county of FVythe and State of Virginia, have invented a new and useful Single-Trigger Double-Barrel Gun, ci which thefollowing is a specification.

This invention relates to single trigger mechanism for d 'ouble barrel guns.

One object fof the invention is to provide a mechanism of simple .character which may be readily shifted for the purpose of discharging the right and left barrels in the order named, or the left and right barrels consecutively. v

A further object of the invention is to provide a mechanism of such construction as to prevent the possibility of involuntary dischargeof the second barrel from the recoil or rebound due vtothe discharge of the 'iirst barrel.

A still further object of the invention is to provide a mechanismfof simple character in which all 'of the parts are carried by the frame 'of the gun' being freel from the trigger or other movable parts, so that greater stability and strength is insured.

With these and other objects in view, as will more fully hereinafter appear, the ini ventionconsists in certain novel features of construction and arrangement of arts, hereinafter ully described, illustrated in the accompanying drawings, and particularly pointed'out in the appended claims, it

being understood that various changes in the form, proportions, size and minor details of the structure may be made 'without departing from the spirit or sacrificing any of `the advantages 4of the invention. l

In the accompanying drawings Figure 1 is a sectional elevation of a portion oi the frame and breech block of a gun, illustrating asinglel trigger mechanism constructed in accordance with the invention. is a sectional plan view of the same, the parts being adjusted to position for'iiring the right barrel in advanceof the left barrel. Fig. 3 is a transverse sectional view on the line 3 3 of Fig. 2. Fig. 4 is a view similar to Fig. 2, illustrating the parts adjusted for iiring the left and right barrels in the order named.. Figl' is a detail perspective View of the mechanism detached. Fig. 6 is a longitudinal sectional elevation illustrating a slight modification of the invention. Fig. 7 is a plan view of the same Fig. 2'

partly in section. Fig. 8 is a transverse' sectional view on the line 8 8 of Fig. 7.

Fig. 9 is a sectional view illustrating a still further modiiication of the invention. Fig. l0 is a rear elevation of parts of the mechanism shown in Fig. .9. Figs. 11 and 12 are detail views illustrating a means for positively holding the sear engaging lever in elevated position until afterthe trigger has been fully released.

Similar numerals of reference are employed to indicate corresponding arts throughout the several iigures of the rawings.

ln the irearm shown in the drawing, the breech block A, hammers B, BQ and sears C, C are or any ordinary construction and are operatedl in the usual manner. The frame D is of the usual type and is provided with a pivot e for a trigger E which may be of ordinary construction, the trigger being preferably mounted at a point midway of the width or the frame.

At the rear face of the breech block are arranged beari'ngs 10 for the rece tion of a transversely disposed arbor or s aft 11 on which are mounted twosleeves 12 and 13, each of which may rock independently of the other. lrojecting forwardlyfrom the sleeves 12 and 13 are rocker arms 14 and 15, respectively, these being arranged in such position that they will be engaged by the hammers B,

'B/ as the latter are cocked, the rocker arms being moved downward against the action of a torsion spring 17. provided with approximately vertical .cam arms 18 and 19, the rear faces of which are engaged by the outturncd ends of said vspring 17. The spring is fornied of a single piece of wire having a central loop that projects The sleeves are further within a recess in the breech block, the ends i of the wire being thence coiled around the shaft 11 and havinOr outwardly bent terminalstha't engage with the arms 18, 19, as described.

Extending transversely of the lower frame plate is a plate 20 that is provided with slots Y 21 through which extend guiding studs in the form of screws 22 that pass into threaded openings in the frame plate, 'these studs serving to guide the plate 20 as the latter is shifted between the two positions shown in Figs. 2 and 4, and the extent of the shifting movement being determined by the engagement of the ond walls of the slots with t e studs. The opposite ends of the plate 20 are rio provided with upturned ears v23 from which project screws or studs 24 that extend through openings 25 formed in the side walls or the frame, but do not project beyond the outer tacos of said side walls. These studs are so arranged that by the employment of any small tool, stick, or the like, the plate '20 may oe shifted Virom the position shown in niig. 2 to that illustrated in e, or vice" versa, or the studs, if necessary, may be arranged to project beyond the side walls of the frame in convenient position to be manipulated by the ngers.

The plate Z0 is provided with apair of lockingnotches 26 arranged to be engaged by a small spring 27 that is secured to the lower 'frame 1)late by a screw 2S. plate is shiilted from one position to the other, vthe spring will engage in one or other of the depressions and will lock said plate in its adjusted position.

rihe plate 2() carries a screw or stud '.29 on .which is pivoted a lever 30, said lever having a rearwardly extended arm 31 that is reduced in thickness in order that it may form a spring, and at the rear end of the arm is an enlarged head 32 which may be moved under f 'either of the sears C, C as shown in Figs. 2 and e, while the lower face of the arm will at ali times remain in' operative relation to the trigger, so that when .the latter is pulled, the

will be forced up and one or other or the sears be moved to ham ier releasing position. When pressure on the trigger is reV iieved, the resiliency of the arm 81 will carry itdown to initial osition.

i/it the forward) end of the lever 39 is a i vcam 34 having oppositely inclined or pointed Jraces which. are arranged to be engaged by the cam arms 18 and 1Q, one or other or' the arms acting on the cam 3d to shirt the position of the lever 30, and the active arm being determined by the position oi the plate 20, so that when in the position, shown in 2 the cooking of both hammers will result in "downward movement of the rocker arms 14, y15, and rearward movement oic the cam arms 18, 19, but the arm 18 only will act on the cam 34, and will shift the rear end of the lever to the position shown in Fig. Should the parts be adjusted to the position shown in -Fig. Li where the left barrel is to be 4discharged irst, the cooking oi' both hamy mers 'will operate as before to depress both g5-rocker arms 1e, and move both cam arms 18 and 1) rearward, and in this the arm 1Q alone will act on the cani and will shift the lever 3G to the position'shovm in Fig. e, so that in thiscase the lett barrel wili he discharged iirst.

Securedy to the lower trame plate is a pair oi' springs 38 and 39 which are arranged to engage the lever 3G a* a point to the rear or" "fhtrts adiig, 2 the 'the discharge of the right barrel.

spring 38 aloneis active, and the spring 39 does not come into'play. -Vfhen adjusted to the position shownin Fig. 4, the spring 39 is active and the spring 38 is idle.

In the operation of the parts as thus far described, reference being now had to Figs. 1, 2 and 3, a pull on the triggerfE. will raise the lever 30 and the head 32 will be moved upward against the sear C pushing the latter to `hammer releasing positioivand ei'liecting This is accomplished against the resistance offered by the spring arm 3i, and so long as the pull on the trigger continues,the leverBO will be Virictionally held between'the trigger and the lower face or' the Sear. As the trigger pull is' released, either voluntarily or involuntarily on the recoil or rebound, the spring arm 31 will follow the downward movement oi the trigger and will bear against the latter withA sulicient force to prevent movement of the lever to the left under the influence of the spring 38, this 'frictio'nal binding of the lever serving to prevent such abrupt shitting as would bring it immediately to a position under the left hand sear, and in case or' involuntary pulling ot the trigger due to the rebound of the trigger against the finger, or to contraction of the muscles, the irictional grip between the trigger and the arm will simply be increased to an extent proportionate to the degree of pressure exerted on the trigger, and it is not tuntil the trigger is 'fully released and the arm allowed to move down that the spring 38 can act to throw the lever over to a position under the left hand A second pull of the trigger moves the lever upward and results in discharge of the'left barrel. On the usual cooking move ment, both hammers .are thrown baclr and will engage with the arms 14:, 15. Both sleeves 12 and 13 will be rocked and both 18 19 will be thrown rearward. At this time the rear end or' the lever 30 is under the left hand and as the parts otherwise in the position `shown in Fig. 2 the cam arm 18 'will act on the cam 34 and the lever 30 will be turned to the position shown in Fig,l 2 against the resistance offered by the spring 38 in readiness for a second operation.

Should the plate 2O have been shifted to the position. shown in Fig. 4, the 'operation will be ictly the reverse oi that stated, the leverbeing tir-.st actuated to discl'iarge the lett barrel, and then 'n over to a posi-- tion under the right han ear and on cr l'- ing movement the arm 1Q i:

)nld act to restore the lever to position under the left hand sear.

In the modified construction. shown in Figs. 6, 7 and 8,'the shaft 11 carries 'two loose cam wheels 18 and l9,.these being acted upon by tor ion springs 17 that tend toV turn them the direction indicated by the arrow Fig. t from each of the mits the cam disk 18. to rotateand the face of .the cam leaves the upwardly extending sesffse disks is a the'path o hammers, so that when the latter are cocked, the cam .disks will be turned in a direction opposite to that indicated by the arrows. The lowerirame plate has guides 43 for the reception of a slide bar or plate on which is mounted va pivot stud 29 carrying alever 30', the rear arm of the lever being reduced in thickness to form a spring of the character previously set forth, and the extremerear end of the lever forming an enlarged head 32 that is arranged to extend between the sears and the upper portion of the trigger, the latter in this instance being provided with a protruding top piece 44.' rllhe front end of the lever is in the form of an upwardly extending -arm. 34 which is arranged to he engaged by the cam face of the disks 18, l9,

pin 42, the pins being disposed in movement-oi2 the rear faces of the and the lever proper is actuated upon by twoA springs 38"39" in the manner previously described.

In the drawing, the mechanism is shown as adjusted for thevring of the right and left barrels in the order named and both hammers are shown cocked. Il the. trigger is pulled the rear end of the lever 30 lwill be raised and the righthand sear will be moved to release position allowing the hammer to sprmg forwardto firing position. This perarm 3ft of the lever,- whereupon the spring 38 shifts said lever to a position under the left hand sear, S0 that on the second trigger pull theleft barrel will be discharged. In

this case, also, it is to be observed that the resiliency of the upwardly extending arm. 34

retains the same in contact with the trigger with-suflicient friction to prevent any abrupt "mov'ement under the inlluence of the spring 3'8, until the 'trigger has been fully released.

.When bot-h. hammers are recocked, the cam 18 alone will be actuated and will restore thev lever to the initial position shown in Fig. 6. By adjusting the plate or bar 20 to the left, the left barrel may'beired in advance ot the right barrel, as will be obvious.

Perhaps the most simple embodiment of the invention is that shown in Figs. S andv 10, wherein the lever 30a is mounted on a transversely movable plate or bar 20a, the rear arm of the lever being resilient, an d being rocked 'to move between the sears and the upper iace ofthe trigger in the same man-ner as shown in Figs. 6 and 7. The forward end ot the lever is provided with a double cam head 46 which is arranged to he l l f two cams 47 and 48 that are carried on Q inner fac-esci the levers. In the position shown-in Figs. il and l0 the right barrel may be r'ired rst, and as the hammer B springs forward the cam 4.7 will be moved out-or engagementwith the lever 46, permitting SpringSSa-to shift the lever to a position underthe left'hand sear. After the left barrel has been lired, the recoclring of bothl hammers will again bring the cam 47 into engagement withv the cam head 46 and the lever will be restored to the initial position shown in Fig. 8. By shitting position of the carrying plate or bar 20? the operation maybe reversed and the left barrel tired in advance of the right ba el.

in orriler to guard against the possibility of accidental discharge due to recoil or rebound of the gun, or convulsive movement olf the linger, a positive lock may be employed, iis lock being in the form ot a dog that is pivotal tothe frame and is urged by spring 6l frein the position shown in Fig. 1l to that shown in Fig. l2 when the trigger is pulled. It will be observed that at the completion of the 'firing movement, the dog 60 will pass under v'the sear actuating lever and will `maintain the same in elevated position, some play of the #trigger being allowed, but before the dog can be released it is necessary for the trigger to move fully down, and the rear end of the trigger head must engage with a round ed cam 62 on the forward face of the dog in order to force the latter to 'release position, so that the trigger must-be fully released before the lever is allowed to descend and shift into engagement with the second sear.

l claim 1. In a single trigger mechanism for double barrel guns, a trigger, a scar actuating le` ver adapted vto oscillate from one scar to another so as to cause the lifting of one sear in advance of the other, a 'support on which the lever is mounted, said support being bodily shilltahlegtransversely ol the frame .so as to determine the order of firing.

Vln a single trigger mechanism for double barrel guns, a trigger, a pivotally mounted sear actuating lever adapted to automatically oscillate from one sear to the other, a support on which the lever i-s mounted, said vsupport being bodily'shiftable transversely ofthe frame and independently ofthe trigger and'adapted to changey the order of firing.

3. In a single trigger mechanism for double harrel guns, trigger, a pair of sears, a sear actuating lever, and means for automatically oscillating the lever from one sear to the other, a support on which the lever is pivotally mounted, said support being bodily shiltable transversely of lthe frame and adapted when so shifted to change the fulcrum point or" the lever and the order of tiring, e'. ln a single trigger double barrel gun, a pair of cams under the control of the hammers, a lever, the 'forward end of which is engageable by said cams when the hammers are cocked, a shiftable ulcrum for ver, a rearwardly projecting arm forming a rt of the lever and normally in position be'twer Y the trigger and one of the sears, and means p support being bodily and adapted to present the latter into op'- the trigger and the other sear after the iiring movement of the first hammer.

.5. In a single trigger mechanism for dou-` ble. barrel guns, a pair of sears, a pair of hammer cntrolled cams, a lever arranged to be operated by said a rearwardly projecting arm-arranged to eX- tend under one of the sears, and means for automatically' vshifting the lever to the oppo-Al site sear after the rst iringmovement, a support on which the lever is fulcrumed, said shit'table with the lever erative relation with either sear.

6. In a single trigger double barrel gun, aA Vpair of hammer controlled cams', a pivotally mounted lever with which said cams engage when cdclred, said lever having a rearwardly extended arm" normally fitting between the trigger and one of the s ears, a support in which said lever is fulcrumed, said support being shiftable with the lever to pre sent the latter into operative relation with either sear, and a spring for moving said arm into position between the trigger and the other sear after the firing movement of the vfirst hammer.

' 7. In a single triggerdouble barrel gun, a pair or' hammer controlled cams, a transversely adjustable plate or bar, a lever carried thereby and with which the cams engage, a rearwardly. extendedv arm forming a part of the lever and normally in position' between the trigger and one of the sears', and a spring for moving' said arm 'between the trigger and the other sear after the firing movement of the iirst hammer.

8. ln a single trigger double barrel gun, a

cams, said lever having 4shaft having bearings to the rear of the breech block, a pair of` sleeves iiulcrumedl on the shaft, rocker arms projecting forward from the sleeves and arranged to beengaged by the levers, cam arms depending from said heads,l aspring tending to move the arms against the hammers, a transverselyladjust! able plate carried by the frame of the gun, a

lever 'fulcrumed to said .plate andhavlng a cam head arrangedl to be engaged by the cam' levers, arearwardly extending arm forming a part of said le'ver and normally fitting be tween the trigger and one Vof the sears, a'palr of springs, arranged to engage said arms and4 shiftv the same to a position between the trig-.l

gerand the other sear'after the iring movement of the rst hammer, being active when the plate is adjusted to one position and the other being active when the plate is. adjusted tothe other position;

one of'said springs'v 9. 'in a single 'trigger double barrel gun, a y

trigger, a laterally shiftable resilient member for transmitting movement from the trigger ,to the sears, said member being held frictionally against the triggerxby its own resiliency,

for shiftingsaid member into opj

Images