US886211A - Pistol. - Google Patents

Description

PATENTED APR. 28, 1908.

K. HINO & T. KOMURO.

PISTOL.

APPLIOATION FILED sBPT.23.1904. BBNBWBD PEB. '1, 1908.

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No. 886,211. PATENTBD 111311.28, 1908.

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APPLICATION FILED SEPT. Z3, 1904. RENEWED FEB. 7, 1908.

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y K. HINO & T. KOMURO.

PISTOL. APPLIOATION FILED SEPT. z3. 1904. BBNEWBD IBB. 7. 190s.

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UNITED sTATns PATENT ermee.

KUMAZO HINO AND TOMIJIRO KOMURO, OF` USHIGOME, TOKYO, .lAPAN f PISTOL.

No. 886,2 1 1 l Application led September 23, 1904, Serial No.'

To all 'whom it may concern:

Be it known that we, KUMAzo HiNo and 'loMiJiRo KOMURO, both subjects of the Em- Iperor of Japan, and residing at Ushigoine, of

i lthe invention 'of especial value as applied to i s pistols.

/ spring,

A further 'object is to provide a cartridge magazine, a cartridge feed and a shell ex-V. tractor enabling the'user to. successively discharge all cartridges contained vin the magazine after first cooking the gun by pulling the trigger for each discharoe, the cartridges being fed and the spent shellns extracted automatically. 1

According to this invention'the barrel is slidably mounted in the shook and operates in firing against the action of the spring, the latter normally maintainin the barre in a rearward position and yieling, under the shock of the discharge, to permit forward movement of thebarrehthe rearward movement effecting discharge of the shell and the succeeding forward movement extracting the s ent shell and drawing a fresh'cartrid e out of) the magazine and into a position to e picked up by the barrel in its next rearward movement. 'To this vend there is provided afiring pin and a shell extractor at` the rear of the stock together with a cartridge feeder, all arranged cooperative relation. A cartridge magazine is provided which maintains the cartridgesI in a position to be picked up' by the forwardly moving feeder. In order to hold the, bariel .in this forward osition which is effected by the discharge o a shell and to revent it, under the action of the fiom returning and firing a second cartridge prior to pulling the trigger a second time, the latter is movably mounted and provided with firing and retaining detente adapted for engagement with firing and re-v taining lugs formed on the barrel. When the trigger is released from the barrel permitting the saine to retract and fire the cartridge, the said barrel is automatically engaged by the retaining detent in its forward movement to Specification of Letters Patent.

225,681. Renewed February 7, 1908. Serial No. 414,780.

ratn'ted Apm'i 2s, ieee.

prevent second firing.' There is also provided a main safety device for preventing the accidental discharge of the pistol. Q The invention will be more fully described in connection with the accompanying draw-- ings and will be more particularly pointed lout and ascertained in and by the appended, claims. y I In the drawings:` Figure 1 is a longitu-v dinal section of a pistol embodying the' main features' of our invention. Fig. 2 is a like' view of a portion of the pistol showing the parts in a position where the barrel is moved forwardly by the operator to draw the first ,cartridge into osition. Fig. 3' is a similar view showing tie position of the parts when the barrel has been'released by the operator and illustrating the manner in which the firing detentand lug are engaged to retain theV barrel in position. Fig. 4 isa 'similar view lshowing the position of the parts after the trigger has been pulled and illustratingthe barrel in a retracted or iiring position, the cartridge having been rammed upon the firing pin and the shell thrust into engagement With the extractor. Fig. 5 is a similar view Ashowing the barrel moving outwardly from the shock of the discharge andthe position of thespent shell when `extracted from the stock, said figure showing the parts prior to complete outward movement of the barrel. L

Fig. 6 isa horizontal sectional viewfon line 6-6 of Fig. 1. Fig. 7 isa sectional view on line 7-7 of Fig. 1. Fig. 8 is 'a rear view of the breech end of the pistol. Fig. 9 is a sectionalview on line 9--f9 ofFig. 10. Fig. 10

is a face view of a portion of the magazine.

Fig. 11 is a low'er face view of the barrel yshowing in elevation the iiring and detent l 1u s. Fi 12 is a top view of the trigger.

ike c aracters of' reference designate similar parte throughout the different figures of the drawings. 4The structure and operation' ofthe pistol will be described in thel order in which the cartridges are fedinto and discharged and the empty shells extracted from the pistol, reference being had first to the-magazine in which the cartridges are contained. The pistol is provided with ay handle 1 in which a lmagazine 2 is located, said magazine consisting of a casing having an internal cross sectionof a generally complemental formation i clined above the horizontal when the barrel 'is in the-position shown in Fig. 5 to ermit said'cartridges to be fed into the stoc In order to prevent,l the cartridges from being automatically fed into the stock by the follower 4, the upper wallsl of the magazine are bentinwardly as shown at 6 to engage the sides of the uppermost cartridge above its center, said bent portions extending from the rear wall of the magazine forwardly a dis-v tance approximately one half' the depth thereof'and engaging thel uppermost cartridge on the'rearward portion of its shell. The rear wall of the magazine 2 is cut away at 7 to permit the feeder, hereinafter described, to enga e the rear end of they cartridge and slide't e same from underthe bent portions 6 4into the stock as shown in Figs. 2 and'3, the follower serving, after the rear end of the cartridge has passed the forward ends of the bent portions 6, to force the next lowermost cartridge 3 into engagement with said bent portionsV 6 and thereby quickly forcing the released cartridge. into the stock.

Inorder to hold the magazine 2 in place in the handle 1 the forward face thereof is notched, as shown in Fig. 10 and in the sec-- tional views, as 8 and 9 and is adapted to be engaged by a spring actuated retainin0- device comprlsing 1n4 part a plate 10 slidably mounted and transversely disposed in a slot in the handle l. The slot in which said late is mounted is slightly wider than the t `ck ness of the plate and permits the latter to be rocked or thrust'forwardly out of engagement with the notches 8 and 9 to permit t le stock through which magazine to be withdrawn, the means for holding said plate 10 in a rearward position in the slot and in engagement with the notches 8 or 9 being hereinafter more fully described.

Next describin the construction of the barrel and the stoc inwhich the same'is slidably mounted, the construction is as follows: The stock 1 1 which is mounted on the handle 1 is provided with a bore 12 in which the barrel 13 is inclosed, the said bore being reduced at its forward end forming a shoulder 14. Immediately above the ma azine the stoclr is bent to receive the cartridges and there is also provided an openino' 15 in the top of the `the spent shells are ejected. At its rearend the stock is threaded to receive a breech block 16' which is' resion cap o f 'iiold the barre in a retracted position.

A firing pin 18 has threaded engagementin the breech block and vprojects therethrough in a manner to engage the percusthe cartridge when the latter is to be fire lSaid firing pin is provided with a recessed flange 19 the recess of which co erates with parts now to be described to ook the pin in place. An extractor 20 comprises a forwardly projecting extracting arm 21 formed of resilient metal and rovided on its forward end with a hook an a slanting nose adapted to automatically engage the rim ofthe cartridge'shell as clearly shown in Fig. 4. Said extractor is provided on its .rear end with an apertured lug 22 through whichthe firing pin 18 projects and against which the flange 19 thereof impinges when' the parts are inl place, 4 as shown in F1 1. A spring actuated locking dog 23 is pivotally mounted at 24 on the extractor and is held in a locking position b a spring 25. Said dog is provided with a ocking projection 26 adapted to enga e the recess in the flange 19. The breech bloc 16 is slotted at 27 to permit insertion of the extractor in the manner shown. j

Next .describing the construction ofthe ward portion 28 and a relativel enlarged rearward portion 29.formin a s oulder 30 between which and the shou der 14 is interosed a sprin 8 which serves to norm'elklly e rear end of said barrel is notched at 32 to receive the nose 21 of 'theextractor and the bore of the barrel is flared outwardly at the rear end thereof in order to effectively pick up the cartridge in its return movement. Said barrel operates in connection with feeding mechanism to force'the cartridge into place in the following manner. The feeder consists of a block 33 adapted, when in a retracted position, to fit into the recess 17 of the breech-block and provided on its lower portion with a feed lug 34 for en agement with the rear end of the cartri ge. The stock is slotted at 35 to permit the lug to be withdrawn rearwardly when the istol is to be cleaned. Said feeder is slidab y` connected with the barrel 13 by means of forwardly projecting arms 36 which slide in ways 37 ormed in the stock and which are provided with lugs 38 adapted to engage' slots 39 formed in the barrel. Said slots 39 terminate in shoulders 40, the function of which in connection with said lugs 38 will nowbe described. w When the barrel 13 is in a retracted position as shown in Fig. 1, the lugs 38/ occupy a forward position in the slots 39 as shown inFig. 6. Assuming that the operator desires to draw the firstcartridge into place, the barrel is grasped and pulled oute5 barrel 13 the same consists of a' reduced for- ISO . then reached Ithe forwardlimit of its move- Y 38 merely sliding forwardly causes ejection in wardly as shown in Fig. 2, the distance be-` tween the inner ends of the lugs 38 and the shoulders 40 permitting movement of the barrel 13 prior to the movement of the feeder 33 a sufficient distance to form a space between the feeder and the barrel slightly greater than the -length of the cartridge.

When the barrel has been moved forwardly such a distance the lugs 38 will beengagedby the shoulders 40 and subsequent forward movement ofthe barrel 13 will be accompanied by forward movement of the feeder 33 and the lug 34 will en age the cartridge and slide, the same forward y from under thebent portions 6, the follower 4 trid es 3 forcing the feed cartridge into the stoc as shown in Fig. 2. The barrel has ment bringing a shoulder 41 into engagement with the shoulder 14. The operator then releases the barrel 13 and the spring 31 -forces the same rearwardly to thelposition 3'which is the cockmg posi,-l

shown in Fig. tion, the barrel being held in such position by the trigger in a manner to be hereinafter described. 1t will -be noted that'this rearof the barrel has taken the lugs ward movement place' independently of the feeder,

and the feed er remaining in substantially the same position as shown 1n Fig.f2. This rearward movement serves, by means of 'the flaring end of the barrel, to pick up the cartridge and hold the same in the position shown l in Fig. 3. The pistol v'is now ready to be fired and when the trigger is pulled the spring forces the barrel 13 rearwardly, said barrel first engaging the feeder arm 33 and thrusting the same into the position shown in Fig. 1. In this movement the extractor 21 lis engaged by the rim or flange of the cartridge and is forced upwardly and over said flange and into engagementtherewith as clearly shown in Fi .'4. f

The feeder 33 is aperture at 42 to receive the firing pin 18 and as the barrel is retracted the percussion cap of the cartridge is forced against the firing in in a manner to discharge the shell.

he load of the cartridge passing outwardly through the bore of the barrel/13, carries the latter forwardly with the following result. As above described when the barrel and feeder are in a retracted position the lugs 38 and shoulders'40 are so disposed as to permit'of a prescribed movement of the barrel 13` a distance slightly greater than the length of the cartridge. This movement is shown taking place in Fig. 5, 'the barrel having been carried forwardly by the discharge of the shell until the play between the lugs 38 and shoulders 40 is taken up. The first movement of the feeder 33 forces the spent shell outwardly and the engagement of the latter by the extractor the manner clearly shown through the car-y in the slots 39v the .and'is of sufficient both of said shoulders 43.

barrel in'precisely the manner as when the pistol 1s cocked by 'as hereinbefore described..

Thetrigger mechanism and. safety devices and themanner in which the same coperate with the barrel will next be described. The barrel is provided with firing shoulders 43 which as shown .inFig 11- are oppositcly ,dis posed and are formed by recessing the barrel' to provide engaging surfaces 44 extending from the `shoulders vto the rear end of the barrel. 'l'.he barrel is centrally grooved at 45 from the shoulder 30 rearwardly to 46 Where- `in the groove terminates on a plane with the surface 44. A retaining shoulder v 47 is formed by` recessing the barrel as clearly shown in ig. 11.y The trigger 48 is pivoted atl 49 and is provided with a ring detent 50 and a retaining detent 51. The firing detent ispreferably formed integral with the trigger width to span the groove 45 andengage The retainingdetent 51 is sufficiently narrow to permit the barrel to move freely and to prevent engagement lbetween the retaining detent and said firing shoulders, the said detent moving freely in slot 45.' Said retaining detent is adapted for engagement with 5. Ejection of the spent shell is the retaining shoulder 47 formed in the rear I end of the barrel. 'The retaining detent isl preferably formed of a art separate from the trigger and is movab y mounted therein, the said detent 51 fitting m the recess 52 and being normally 'held in an upward 'position by spring 53. In order to prevent the detent from being forced out of the recess bythe spring 53 there may be provided any suitable retaining device such as shown in Fig. 3 which may consist of a spring .plate 54 rigidly secured to the upper face of thevtrigger and bifurcated to engage the pin in the manner shown.

Next describing ger it will be noted that the retaining and firing detents are disposed on opposite sides of the pivot'49 so'that as the trigger is rocke in oppositel directions one detent will be thrown out of operative proximity to the roo the operation of the trgfiring or detent shoulders when the remaining the shoulders 43 there is pro-` the` operator will be re 4:shown in tracted under the action of spring 8 to theposition shown in Fig. 3 wherein the firing detent will engage the shoulders 43.

be obvious by reference to 'Figs 2 and 3 that -in -the forward movement of the barrel the trigger. has been permitted to rock upon its pivot a (ufiicient f tainingl etent 51 out o e agin roximit to the retaining shoulder 4I71llowinlg the bairel to retract until the shoulders 43 engage the firing detent 50. When the trigger 48 is ulled to fire, the retainin detent will be orced upwardly into the s ot 45 as clearly Fig. 4 immediately after the firing detenthas been released from the shoulders 43. A rearward movement of the barrel in firing and its forward movement resulting i from the discharge of the shell is effected so quickly that the operator does not release his grip upon the trigger and still retains it in the position shown in Fig. 4. The detent 51 when the barrel travels outwardly will pass E`over the surface 44 and when the barrel returns will automatically engage the detent 47,- this action being taken prior to the .operator releasing the triggerand serving to automatically arrest rearward movement of the barrel. After the operator releases the trigger the same is rocked by the sprin 54 in a manner to bring the iirin detent into n order to Y43 m time to catc the barrel.

y insure effective operation in this respect theshoulders V43 and 47 are spaced apart a greater distance than the distance between theliring .and retaining detents 50 and 51.

- same consists o groove having a shallow the trigger safety the ck pin havin a ange 57 between which and the recess o? the tri ger the. spring 54 is located. The outer en 58 of said locking pin projects through the handle 1 and engages the plate 10. The said spring 54 serves to normally hold the trigger in a cocked position and also serves Yto force the plate 10 rearwardly into locking en agement with the magazineQ.

Next explainin f ai) n order to vary the tension of the spring I 54 to secure amore effective or a less positive engagement of the plate 10 with the magazine 2 and also to vary the action of the trigger 48 the plate 10 is provided with a ortion 59 and a deep portion 60. Variab e tension ofthe spring may be secured by lateral movement o the plate 10. i

The lever safety comprises a bell 'crank lever 61 pivoted at 62 and having its lower arm engaged by spring 63 and normally held outwardly thereby. Said trigger is rovided with a lug 64 adapted to engage ugs 65 and 66 formed on the lower end of the when the trigger is in It will distance to throw the re-l A ceding the cartrid the osition shown in Fig. 2 it is automaticilly ocked by engagement of the lug 64 with Having thus described our invention, what we claim and desire to secure by Letters Patent is 1. In a pistol, the combination of a stock, a slidable barrel in said stock, a spring for urging said barrel into retracted position, a trigger provided with detentsA adapted to env-age with notches on said barrel, a movab e bolt connected with said barrel and adapted to draw a cartridge in osition for loading, a magazine cartridge eed, means for extracting the shells, and a firing pin ada ted to project through an opening in sai bolt.

2. In a device of the character set forth, the combination of a stock, a slidable barrel in said stock, a coiled spring in said stock for urging the barrel backward, a tri vi ed with a rigid detent, a movab e detentin said trigger, said detent being ada ted to engage with saidbarrel to hold 1t in orward posltion after ring, a magazine, means for es from the magazine to or extracting the shells, and a safeguard comprisin a bell' crank lever ivoted to the handle, having one end provi ed with a projection ada ted to vengage with the trigger and the otiier end lying along said handle, and a spring for holding said safeguard in normal position to en age with the trigger, substantlally as descri ed.

3.l In a pistol, the combination of a stock, a spring actuated barrel therefor having en'- gaging members, and a trigger provided with firing and retaining members for engagement with said barrel.

4. In a pistol, the vcombination of a stock, a spring actuated barrel therefor having engaging portions, and a pivotally mounted trigger provided on opposite sides of its pivot with iinng and retaining detents for engagement with said barrel.

5. In a pistol, the combination of a stock, a spring actuated barrel therefor having engaging members, and a pivotall mounted trigger rovided on one side o the pivot with a rigid firing detent and on the op osite side with a yieldingly acting retaining dbtent for engagement with said barrel.

6. In a pistol the combination with a stock, of a spring actuated barrel therefor, a pivotally mounted trigger having firing and retaining detents engaging said barrel and an auxiliary safety serving to lock said trigger in firing andretaining positions.

7. In a pistol, the combination with a stock, of a spring actuated barrel therefor, a pivotally mounted trigger'having firing and retaining detents engaging said barrel, and a pivotally mounted auxiliary safetyv for lockmg said trigger in iiring'and retaining positions.

the barrel, means ger protrid e feeder operated by said barrel, and a Shel? extractor coperating With said feeder, said feeder serving, upon predetermined movement of the barrel, to draw the oartridge into the stock and in connection with the extractor simultaneously discharge the shell therefrom.

In testimony whereof We affix our signa tures in presence of two witnesses.

KUMAZO HINO.

TOMIJIRO KOMURO.

Witnesses:

MAsUo YosHIDA, L. HONDA.

Images