US930305A

US930305A - Firearm.

Info

Publication number: US930305A
Application number: US43796608A
Authority: US
Inventors: Julius Maudry
Original assignee: Gebrueder Boehler and Co AG
Current assignee: Gebrueder Boehler and Co AG
Priority date: 1908-06-11
Filing date: 1908-06-11
Publication date: 1909-08-03
Anticipated expiration: 1926-08-03
Also published as: FR391112A

Description

y n Y nrmculonf FILED ningunos. Y Y 930,305. Patented Aug. 3,190.9; y

2 SHEETS-SHEET 1A.

J. MAUDEY.

FIREARM.

Y PPLIUATIOB'- FILED JUNE 11, 1908.

'f vsns ran FFICE.

JULIUs Manner, or' VIENNA; aUs'rRancNeARY, AssIdNoR 'rofrnn FIRM or' GEBR. nonLER a co., AKTIENGESELLSCHAFT, or` VIENNA, AUSTRIA-HUNGARY.

Specification of Letters Patent.

- Patented Aug.- 3, 1909.

Appucauenma June n, 190s serial No. 437,966.

Y breech mechanism withloeking-'lugs-on both sides.

According to this invention the barrel' when in tjhe loading position is securedby means of an automatically acting`V part in that position in which its` locking toI the breech block, which i's'guided to move in av straight line, can-'be eiected, or the separa tion of the coupled parts completed after the completion of the unlocking' movement. For this purpose a lockingpin'is pressedinto engagement with arecess formed on the outside of the barrel by means of a-springgandis disconnected vby the breech block for' the purpose of releasing the barrel to which it is to' be locked. l

According to this invention the blow of the hammer is transmitted to the firing'7 pin, located in the-breech block7 by an interme= diate piece mounted at an incline* in the handle'of the breech block, and this arrangement enables the trigger mechanism to be arranged laterally andin consequence there-v of a compact construction of the fire-arm is provided- In order to' secure asuredischargethe trigger mechanism of l'the fire-armcomprises asliding catch or scar which'is forced against the operating lever 'by af spring and is so shaped as to provide two pressure or bearing points for-the trigger. As a sliding fpiece of the trigger extends in the path of the breech block, itwill be shifted back from the latter by opening the breechblock andv withits sharp -corner presses under the sea-r lever's'o that-'the operation of the trigger and-consequently. the discharge of the lock bythe 'open breech block is prevented.

'Ifhel accompany-ing drawing-.illustrates by way of example amilitaryrie embodying this invention. l

`,Figure lshows' the-guninsectionalelevaftion with the' breech meehanismflocked', Athe gun lockbeing' in elevation. Fig. 2 a slmilar view showing the breech mechanism unlocked irrits ou-termost rear position, the

gun lock being removed. Figs. 3 to 4a showthe trigger mechanism in operative positions. Eig. 5- shows the trigger mechanism in an inoperative osition. Fig. 6 shows the breech block 1n horizontal section to a larger scale,

The barrel 2 is arranged to work in a sleeve 1 and is forcedV forwardly by means of a barrel spring 3 which surrounds it and which u bears on t'he'one hand against an inwardly extending collar on the sleeve 1 and on the other hand against anoutwardly extending collar Lton the barrel 2. The rear end-of the barrel extends beyond'the cartridge chamber and is guided in the casing 5; such extension is adapted to receive and to be locked to the head of the breech block 6. For this pur pose the rear end of the barrel is in the form of"a`cylindrical enlargement, the periphery of which is provided with helically wound ribs 7 which engage with corresponding grooves formed in the casing 5; a recess or chamber within the cylindrical enlargement being adapted to receive the head of theA breech block when it slides forward and while the barrel is in the loading position the wall of such chamber is provided with interrupted transverse ribs 9, see Fig. 2, with which two laterally extending lugs 10 on the breech block, when such brcechvbloclr is in its forward position, engage immediately when the rotating barrel slides forwardly.

In order that the barrel shall be held in the loading position, that is, the position in which the separation of the coupled parts can be accomplished, when the unlocking movement is completed, there is provided in the periphery, of the cylindrical extension a recess int-o which alocking pin 11 is forced by a spring l2 so that the barrel is then secured inthe correct position. The locking in 11 is adapted to be released by a plate-li e device 13' which rests u on the spring 12 and is formed with an arm eveled at its rear face and which projects into the path of the breech block s that it is depressedthereby when; the-breech block passes over iti.

Thel breech block is formed with ah'ole in itsforwardjendfor the firing pin 14, see Fig; 5;.-and a-'longfreces's" at its're'a'r for a-br'eech spring-15, the outer end ofl whichl bears against the' rear-- endplate ofthe casing;

The handle of the breech. block is formed with an inclined passage in which is mounted an intermediate piece 16 through which the blow of the hammer 17, see Fig. 1, is transmitted to the iiring pin.

The'hammer is operated by an ordinary hammer lock which in consequence of the arrangement of the intermediate piece 16 can be laced at the side of the gun.

libtween the trigger 18, which is revoluble on the bolt 27 and engaged by the spring 28 ,and the scar 19 revolublev on the bolt 29, is arranged a sear lever 20 revolubly mounted on a bolt 30, the said sear lever having a for- ],o ward extension 21 which is engaged by a s ring 31 also coperating with the sear 19.

Fig. 3 shows the trigger mechanism in its normal position of rest,'the breech block being closed. The trigger 18 is retained in its 20 normal position of rest by means of the s ring 28 which presses against the under side of the breech block casing 5, and when the trigger is in this position its horizontal arm bears against the under side of the said breech block casing and has a sliding piece-22 disposed therein and engaged by a pressure s ring 23, the said sliding piece projecting t rough the slot32 of the breech block casing 5 and'is held in the path of movement of the 3o breech block 6. The extension 21 of the sear lever constitutes the ejector which rests against the under side of the breech block,

and when the latter is near its rearward position, said extension engages a notch 21a in 35 the head of the breech blockand strikes against the base of the empty and rear- ,wardly moving shell and snaps it out of the receiver. The s ring 23 presses the sliding l piece 22 forwardlly in a horizontal direction and the sharp corner of the sliding vpiece 22 is maintained 1n engagement with the notch 21b of the scar lever 20. It is obvious that a pull exerted upon the trigger 18, which is shown in two phases in Figs. 4 and 4, will cause the sliding piece 22 to beautomatically disengaged from the notch 21b of the lever 20 and the said sliding piece can only be again actuated by the trigger 18 when the breech block 6 is in its forward or closed position.

When the breech block 6 is in its rearward f left its open position shown by Fig. 5, and

` has assumed the closed position shown by Fig. 3, the trigger 18, released from the pressure of the finger of the operator, will be impelled by the laction of the s ring 28 and change from its position shownl) the position shown by Fig. 3, and during its movement in making such change, the sharp corner of the sliding piece 22 will again eny Fig. 5 into age the notch 21b of the lever 20 and therey dispose the trigger in position for subsequent actuation, that is to say, in position for ring a new shot.

vIt will be understood that the parts of the trigger mechanism can come into the respective positionsshownl by Figs. 4 and 4*.only

when the trigger 18 is pulled back by hand.

In these positions the trigger 18 will be gradually turned more to the rear, and during 75 this motion the sliding piece 22 impelled by the s ring 23 will simultaneously slide forward y so that it remains in engagement'with the notch 21b of the lever 20. When the breech is o cned by hand and the breech block 6 is s ifted from its closed position as shown by Fig. 3 into open position as shown by Fig. 5, the lower rectilinear ledge at the rear end of said block will strike against the upper part of the sliding piece 22 which pro- 85 ects in the path of the said ledge, as shown y Fig. 3. In this loperation the sliding plece 22 will be pushed rearwardly in the direction of the impact and the spring 23 will be compressed so that the slidm piece 22 ,90 will move rearwardly along the orizontal arm of the trig er 18 in the direction of its axial pin 27. n consequence of this rearward motion of the sliding piece 22 in a horizontal direction, its sharp corner will become disengaged from the notch 21"v of the lever 20. The lever 20, however, remains in the position shown in Fig. 3, and for this reason the hammer cannot be released. The further rearward movement of the breech block 6 results in a downward pressing of the sliding piece 22 and also imparts a similar movement to the trigger 18, but owing to the position of the several parts at this time this movement can no longer influence the lever 20. The eiect just described is due to the shape of the upper part of the sliding piece 22 which at first presents to the rear end of the breech block 6 a nearly vertical 'surface which merges into a curved horizontal surface, as clearly shown in the drawing. The breech block 6 during its rearward motion effects the cocking of the mechanism, but it will not be able to release the cocked lock mechanism. The cartridge magazine 24, Fig. 2, is located beneath the casing 5v and the cartridges held therein are lifted upwardly by means of a feed plate 25 through springs 26.

- The working of the improved fire-arm is as follows: If the trigger 18 be pulled when the rifle is loaded and the .hammer cocked, the lower sharp' corner of the sliding piece 22, see Fig. 3, and its end face, see Figs. 4 and 4, successively engage with the lever 20 so that when in the position shown in Fig. 4 the pull is transmitted through two pressure or bearing points wherebya sure and gradual discharge is rendered possible. By the consequent release of the sear 19, the hammer 17 is disengaged and strikes against the intermediate 'piece 16 which thereupon-drives the firing pin forward and by a central blow causes the `cartridge to explode. After the shot has been red, the barrel 2 with the locked breech block 6 slides to the rear.

While the barrel is partially rotating, the

spring 15 now drives the breech block 6 forl ward again so that it thrusts the cartridge,

moved up by the feed plate 25, into the barrel, releases the locking pin 11 by strikingv against the v bevel'ed face of the releasing de- `vlce 13 and continues to move onward with the barrel thereby released. As the barrel must rotate when so movi forward, the locking of the barrel to the reech block is also simultaneously effected, as hereinbefore described.

l/Vhat is claimed is:

1. in automatic re-arm comprising a rotating barrel having a retreating movement for a short distance and provided with an outer recess therein, a longitudinally movable cylindrical breech-block with barrel locking lugs on both sides, a fixed barrel cas-l.

ing having a lateral aperture, and a springactuated locking in guided in the said aperture of the barrel casin and enga the outer recess of the barre to secure tie atter against longitudinal and rotary movement at the point where the breech block is un locked from the barrel and allowed to retreat to the rear.

2. An automatic iire-arm comprising a rotating barrel having a retreat'` movement for a short distance and provi ed with an outer recess therein, a longitudinally movable cylindrical breech block with barrel locking lugs-gn both sides, the breech block having a g pin therein and an intermediate piece mounted in a ortion thereof at an incline, a fixed barre casing having a lateral aperture, and a spring-actuated locking pin guided in the said aperture of the casing and engag' the outer recess of the barrel to secure t e barrel against longitudinal and rotary movement atl the point where the breech block is unlocked from the barrel and allowed to retreat to the rear.

3. An automatic iire-arm comprising a rotating barrel having a retreating movement for a short distance and provided with an outer recess and a longitudinally movablecylindrical breech block with barrel locking means, a trigger mechanism comprising a sprnv .pressed sliding piece, an operating lever, t e sliding piece being of such shape as to bear` upon said lever at two pressure bearing points', a fixed barrel casing having a lateral a erture, a spring-actuated locking pin guide in the said aperture of the casing and` engaging the recess of the barrel and engaged by the breech block, the barrel being secured against longitudinal and rotary movement by engagement of the locking pin with the recess thereof at the point Where the breech block is unlocked from the barrel and allowed tol retreat to the rear.

4. automatic'ire-arm comprising a rotating barrel having a retreatin movement for a short distance and rovil ed with an outer recess, a longitudina y movable cylindrical breech block-provided with barrel.

locking means and having a'firing pin there- 1n and also provided with an intermediate piece disposed at an incline in a portion thereof, trigger mechanism includlng a springactuated sliding piece, an operating ever, the sliding piece being associated in such manner as to bear upon saidlever at two'pressure or bearing points, a fixed barrel casing having alateral aperture, and a spring-actuated locking pin to engage the outer recess of the barrel to secure the latter against longitudinal and rotarymovement at the point Where the breech block is unlocked from the A barrel and allowed to retreat to the rear, the

breech block beinggui'ded to .move in a straight line with relation to the barrel after it is unlocked, the breech block when in'open position preventing the actuation of the trigger and consequently the operation of the ock.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JULiUs- MADRY. v1Witnesses: I l

JosEF RUBARoH, AUGUST FUGGER.