US2577335A - Double-barrel gun of the swinging barrel type - Google Patents

Description

Dec. 4, 1951 v. M. M. LAMBERT DOUBLEBARREL GUN 0E TEE SWINGING BARREL TYPE 4 Sheets-Sheet l Filed Jung l1, 1947 Dec. 4, 1951 v. M. M. LAMBERT 2,577,335

DOUBLE-BARREL GUN oF THE SWINGING BARREL TYPE Filed June ll, 1947 4 Sheets-Sheet 2 i .7o C f f e@ y 4f j' i IX l / 27 .f f y 22 Y /A 50 fig/5 29 o 1J ff? I? P /0 f4 /5 /5 51 1 l? /v /25 22 v 29 [cf-:9, VW //L l g Q o lILuLL-rLrLa-rby @wim Dec. 4, 1951 v. M. M. LAMBERT 2,577,335

DOUBLEBARREL GUN oF THE swINGING BARREL TYPE Filed June 1l, 1947 4 Sheet's-Sheet 5 DCC 4, 1951 v. M. M. LAMBERT 2,577,335

DOUBLE-BARREL GUN OF THE SWINGING BARREL TYPE Filed June 1l, 1947 4 Sheets-Sheet 4 l'numfL-Dwum, mm mmqgmvtz ipmwt Patented Dec. 4, 1951 UNHTED- STATES FCE Victorine Marie Marguerite Lambert, Tangier, French Morocco, Africa Application June 11, 1947, Serial No. 753,876

7 Claims. l

The present invention relates to double-barrelled sporting-guns. Y

The invention is more particularly directed to facilitating the manufacture of double barreled sporting-guns provided either with superposed or with juxtaposed barrels in a manner which will be described hereinafter and which eliminates the hitherto employed false-breech and makes it possible to simplify the gun mechanism while giving the weapon an increased strength.

To this end, the invention comprises two superposed or juxtaposed gun barrels which are hingedly interconnected near their muzzle ends, the rear ends of the barrels` being swingably mounted on the forward end of a slide plate which is movably engaged with the breech-block and buttstock. Within this plate is slidably mounted a second plate carrying a pair of projecting pins extending through the breech to engage and cock the hammers. This plate is operated by pins on the barrels engaging cam slots in the plate, one pair of these pins operating ejectors in the cartridge ends of the gun barrels.

To provide the swinging mounting of the gun barrels on the slide plate, one barrel is formed with an annular trunnion engageable in a circular opening in the slide plate, and the other barrel carries a circular trunnion engageable in the annular trunnion when the barrels are swung toward each other about their hinge connection, a spring latch being provided to hold the barrels in this mutually parallel or firing position. The slide plate embraces the breech-block, and its rear end is cooperable with a locking bolt in the buttstock to lock the barrels to the breechblock, or to release the barrels for swinging on the slide plate to eject discharged shells and to cock the hammers.

With the foregoing in mind, it is among the objects of this invention to provide an improved double-barrelled gun which is simple and inexpensive to manufacture and assemble and is reliable in operation.

Another object is to provide such a gun comprising relatively few component parts forming a simplified operating mechanism.

These and other objects, advantages and novel features of the invention will be apparent from the following description and the accompanying drawings.

Belgium June 21, 1946 In the drawings:

Fig. 1 is a plan view of the two gun barrels as hingedly interconnected before assembly into the gun.

Fig. 2 is a, plan view of the barrel supporting slide plate and the plate mounted therein for cocking the hammers and ejecting discharged shells.

Fig. 3 is a side elevation view of the breechblock.

Fig. 4 is a front elevation view thereof.

Fig. 5 is a vertical, medial sectional view through the bolt.

Fig. 6 is a rear elevation View of the bolt.

Fig. 7 is a longitudinal sectional view of the rear portion of the gun, showing the interrelation of the elements illustrated in Figs. 1 through 6.

Fig. 8 is a perspective view of the buttstock and barrel slide plate, as disassembled from the barrels.

Fig. 9 is a perspective view showing the barrels broken from the breechblock and buttstock.

Figs. lO, 11 and 12 are plan views, partially in section, illustrating the assembling of the slide plate, the breech-block, and the hammerv cocking and shell ejecting plate.

Fig. 13 is a partial longitudinal sectional view l of the gun, with the barrels removed therefrom,

showing the elements in the gun cooking position.

Fig. 14 is a similar View, showing the elements in a position releasing the slide plate and with the hammer cocking plate moved to its hammer engaging position.

Referring to Fig. l of the drawings, the gun includes two barrels C1 and C2 having locks I and 2 at their muzzle ends interconnected by a pin 3 to form a hinge interconnectionfor the gun barrels. Near its other end, barrel C2 has a attened portion formed with a circular or cylindrical trunnion ll-arranged to engage within the bore 6 of an angular trunnion 5 formed ona flattened portion of the gun barrel C1. Intermediate their ends, the two barrels are provided with releasable spring latch elements 1, l, arranged to resiliently interengage to hold the barrels in substantially parallel relation with the trunnions interengaged. For a purpose to be de- Y scribed hereinafter, the cartridge chamber ends `key 22 and spring 3|.

of both barrels are formed with projecting pins I4 and barrel C2 is formed with a second pin I5'.

The gun barrels are arranged to be swingably supported on a slide plate 9 illustrated more particularly in Figs. 2, 7, 8 and 10 through 14. For this purpose, plate S is formed adjacent its forward end, with a circular aperture It arranged to t over the trunnion 5. Rearwardly oi this aperfture, plate 9 is formed with an elongated rectangular aperture i I which connects with a narrower rectangular aperture I2 at the rear end of slide plate 9, The cross bar thus formed at the rear end of plate@ and interconnecting the side bars 2E', 2t', has a downwardly and rearwardly beveled inner edge 2l for a purpose to be described.

Slidably mounted for longitudinal movement in rectangular aperture I I, iSVv a second plate I3 which is formed with a slot Ill arranged to receive the gun barrel pin I4. when the latter are. as sembled with plate 9, and a slot I arranged to receive the pin i5. Projecting irom the rear end of plate I3 are a pair oi spaced pins IS, it' which extend through the breech-block to cock the hammers of the gun.

rI "he breech-block is shown more particularlyT in Figsj, 4, 7 and l0 through l4. As illustrated, breech-block I'I is generally elliptical in end elevat-ion, with flattened narrow ends, and has a pair of holes I5 which are arranged to slidably receive the pins Iii ci plate i3. The forward face or the breech-block is formed with a pair of bevelled orchamfered recesses 23 arranged to ttingly interengage the correspondingly bevelled or chamfered ends 2li and 2li', respectively, of the two gun barrels. Centrally, of the two recesses, are a pair of apertures 25, 25 through which the hammers I9 of the gun may act to strike cartridges loaded in the cartridge chambersof the two gun barrels'. lower ends, breech-lock Ilis formed with a pair of rectangular slots 2li, 25 arranged to slidably engage bars 25", 2t', oi"- slide plate il.

The gun bolt is shown best in Figs. 5 through 7, i3 and 14.. As shown, locking bolt I8 is generally rectangular and has an upper semi-cylindrical recess with an inwardly projecting pin 29 arranged to engage a helical groove 3d in a key 22. Intermediate its ends, said locking boltk I8 is formed with a recess 23 arranged tol slidably receive a compensator 32 formed on breech-block H- and extending rearwardly from the latter. 'The rearwall of the locking bolt I8 is recessed inwardly; as at 28', adjacent aperture 28', Beneath aperture 23, the rear surface of said bolt i8 is bevelled, as at 27', for cooperation with cross bar 2-'I'r of slide plate t. The pin projects downwardly from the bottom surface of bolt I8 to act as a seat for a coil spring 3 i.

The gun is assembled inthe following manner. Referring to Figs. l0 through l2, breech-block Il' isinserted through rectangular aperture II.' of plate 9v as shown in Fig. l()A and is then rotated as shown in Fig. 11, diagonally opposite ends ofA slots 26 being rounded on' to permit such rotation. IThe block is then slid into the smaller rectangular recess I2, as shown in Fig. 12, after which plate I3 is mounted in aperture II. With plate I3y forwardly in aperture II, and breech-block I'I moved forwardlyV so that pin- I6 projects through hole I6', the locking bolt It is inserted through theY rear portion of aperture I2, and engaged with This relation is shown essentially in Figs. 13 and 14. The gun barrel C1 is then so arranged that trunnion 5 is disposed intermediate its upper and .1,

\. intoY the operative position.

in hole It of block 9, and gun barrel C2 is then swung toward gun barrel C1 to engage trunnion 4 within bore 6 of trunnion 5. During such movement, care must be taken that pins I4' engage in slot i4 and pin I5 engages in slot I5.V

The snap locking action of members 1, l holds the gun barrels in assembled relation with slide plate I0. The assembly of the gun is completed by securing breech-block I'I to buttstock 8 in any suitable manner. The buttstock is provided with a lateral recess for allowing access to triggers 2 I, 2 I, while protecting the latter from accidental manipulation.

The gun operates in the following manner. Assuming that the shells in both barrels have been discharged, handle 22 is operated to turn the bolt, causing pin 29 to ride downwardly along groove 30 moving bolt I8 downwardly. This causes surfaces 2l to move downwardly relative to surface ZI'voi the cross bar of the slide plate 9, so that the latter becomes aligned with the recess 28 in the rear surface of the locking bolt I3. The slide plate 9, and its hingedly attached barrels Crand C2, may now be moved forwardly 'as shown more particularly in Figs. 9 and 14.

When the barrels are swung to the position of Fig. 9, the movement of pins I4 and i5' along slots it and I5 moves plate I3 rearwardly relative to breech-block Il. This causes pins i5 to move rearwardly through aperture it (Fig. 4) to vstrike hammers I9 and swing the same clockwise so that they are cocked by the sear 2Q interconnected to triggers 21|. This action occurs during `movement of pins i4 along the diagonal portion of slot I4. As the gun barrels continue to swing, pin I5 interacting with slot I5 continues rearward movement or"v plate i3. As pins l 4 enter the transverse portion of' groove I 4, they move rearwardly their attached ejectors 33 to eject the'disch-arged shells from the rear ends of the barrels. New shells are then inserted in the cartridge chambers andthe barrels are swung back toward the firing position, this swinging action moving plate I3 forwardly. When the barrels have returned to the ring position, the

lock 22 is rotated whereupon spring il causes bolt i8 to rise during movement of pin 2e along groove 3G, and surface 2v engages surface 2'1 to nrmly pull slide plate 9 and the attached barrels The gun is now ready to be iired again. While the invention has been described as applied to superposed barrels C1- and C2, it will be clear that a substantially iden-tical arrangement can be used for juxtaposed barrels, with a slight change. in buttstock 8.

The gun is red in the following manner. Whenthe forward trigger 2i is pulled, member 2i? is rocked counterclockwse so thatv its lower end releases the lower end of hammer I9.. The associated spring then biases the hammer to project its firing pin through aperture 2E to strike a cartridge in barrel C1. The other barre1 is fired by a similar mechanism, not shown, operated by the rearY trigger 2iv to. release an identical hammer I9 associated with. barrel C2.y

While a speciiic embodiment of the invention has been shown and described in detail to illustrate.v the application of the invention principles, it should be understood thatA the invention may be otherwise embodied withoutdeparting from such principles.

What I claim is:

1*. In a` doublebarrel. gun of the swinging barrel type a pair of barrels hingedly interconnected adjacent their forward ends, one of said barrels'having, near its rear end, an annular trunnion projecting toward the other barrel and the latter having, near its rear end, a cylindrical trunnion engageable within said annular trunnion when said barrels are swung -into parallel relation; releasable interengageable locking means on said barrels eiective to maintain the same in such parallel relation; a barrel supporting slide plate tting between the parallel related barrels and having a circular aperature in its forward portion receiving said annular trunnion to form a swinging mount for said barrels; a buttstock; a breach-block secured to said buttstock; said slide plate having a rectangular aperture in its rear portion closely embracing said breech-block and providing for interlocked, longitudinal sliding movement of said slide plate re1- ative to said breech-block; and locking means mounted in said buttstock and extending through such rectangular aperture beyond said breech-block, and movable transversely of such rectangular aperture in engagement with the rear side thereof to draw said slide plate rearwardly to lock the rear ends of said barrels against said breech-block; said last-named means being reversely movable to release said slide plate, for forward movement to provide for swinging of said barrels relative to said slide plate.

2. In a double barrel gun of the swinging barrel type a pair of barrels hingely interconnected adjacent their forward ends, one of said barrels having, near its rear end, an annular trunnion projecting toward the other barrel and the latter having, near its rear end, a cylindrical trunnion engageable within said annular trunnion when said barrels are swung into parallel relation; releasable interchangeable locking means on said barrels eective to maintain the same in such parallel relation; a barrel supporting side plate fitting between the parallel related barrels and having a circular aperture in its forward portion receiving said annular trunnion to form a swinging mount for said barrels; a buttstock; a breech-block secured to said buttstock and having a pair of circular recesses forming seats for the rear ends of said barrels; a pair of hammers mounted in said breech-block, each swingable in a diametric plane of a different recess and formed with firing pins projectable through axial apertures in said recesses; said slide plate having a rectangular aperture in its rear portion closely embracing said breechblock and providing for interlocked, longitudinal sliding movement of said slide plate relative to said breech-block; and locking means mounted in said buttstock and extending through such rectangular aperture beyond said breechblock, and movable transversely of such rectangular aperture in engagement with the rear side thereof to draw said slide plate rearwardly to lock the rear ends of said barrels against said breech-block; said last-named means being reversely movable to release said slide plate for forward movement to provide for swinging of said barrels relative to said slide plate.

3. In a double barrel gun of the swinging barrel type a pair of barrels hingedly interconnected adjacent their forward ends, one of said barrels having, near its rear end, an annular trunnion projecting toward the other barrel and the latter having, near its rear end, a cylindrical trunnionV engageable within said annui-ar trunnion when said barrels are swung into parallel relation; releasable interen'gageable locking means on said barrels effective to maintain the same in such parallel relation; a barrel supporting slide plate fitting between the parallel related barrels and having a circular aperture in its forward portion receiving said annular trunnion to form a swinging mount for said barrels; a buttstock; a breech-block secured to said buttstock and having a pair of circular recesses forming seats for the rear ends of said barrels; a pair of hammers mounted in said breech-block. each swingable in a diametric plane of a different recess and formed with firing pins projecty able through axial apertures in said recesses; said slide plate having a rectangular aperture in its rear portion closely embracing said breechblock and providing for interlocked, longitudinal sliding movement of said slide plate relative to said breech-block. the side legs of the rectangular' aperture sliding in grooves in said breechblock and the inner surface of the rear ledge thereof sloping downwardly and rearwardly; a lock bolt extending through the rectangular aperture rearwardly of the breech-block and shiftable parallel thereto, said bolt having a sloping surface cooperable with that of said rear ledge to wedge said slide'plate rearwardly to firmly engage the gun barrels in such recesses; and means for so shifting said bolt in reverse directions to lock and to release said side plate, respectively.

4. A double barrel gun as claimed in claim 3 in which the rectangular aperture comprises a relatively narrow rear portion embracing said breech-block and a relatively wider forward portion, the width of the forward portion being sucient to provide for insertion of the breechblock therethrough when rotated from its ultimate position, and rotation of said breechblock to its normal position for linear movement into the rear -portion of such rectangular aperture and diagonally opposite ends of the breechblock grooves being rounded off to facilitate such rotation of the breech-block in said forward portion.

5. A double barrel gun as claimed in claim 3 in which the rectangular aperture comprises a relatively narrow rear portion embracing said breech-block and a relatively wider forward portion, said breechblock being formed with a pair of longitudinal holes each aligned with a hammer; a slide member mounted in the forward portion of said rectangular recess for longitudinal movement relative to said breech-block and having a pair of projecting pins each slidable through one of such breech-block holes; and means on one of said barrels engaged with said slide member and operable, during swinging movement of the barrels out of engagement with said breech-block, to move said slide member rearwardly to cause said pins to engage and cock said hammers.

6. In a double barrel gun of the swinging barrel type a pair of interconnected barrels; an annular trunnion near the rear end of said barrels projecting between them in a direction perpendicular to the axis of said barrels; a buttstock; a breech-block secured to said buttstock; a barrel supporting slide plate tting between the parallel related barrels; a circular aperture in the forward portion of said slide plate to receive said annular trunnion forming a swinging mount for said barrels; said slide plate being longitudinally movable relative to said breech block and locking means mounted in said buttstock to4 draw and lock the slide plate in its rear position in which the rear ends of: said barrels are applied against said breech block.

7". Ina double: barrel gun of the swinging barrel type a pair ofY barrels hingedly interconnected adjacent their forward ends; each of said barreis having', nearV its rear end, a component portion of a trunnion projecting toward each other, said coponent portions engaging each other to form a cylindrical trunnion when said barrels are swung into parallel relation; releasable interengageable locking means on` said barrels effective to maintain the same in such parallel relation; a barrel supporting slide plate fitting between the parallel related barrels; a circular aperture in the forward portion. of said slide plate to receive said cylindrical trunnion forming a swinging mount for said barrels; a buttstock; a breech-block secured to said buttstock; said slide plate being longitudinally movable relative to said breech block; and locking means mounted in said buttstock to draw and lock the slide plate in its rear position in which the rear ends of said barrels are applied against said breech block.

VICTORINE MARE MARGUERITE LAMBERT.

No references cited.

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