US1869537A - Firearm - Google Patents

Description

Aug. 1932- w. s. BRADBURY ET AL 1,869,537

FIREARM Filed March 23, 1931 IN V EN TORS WALTER @131? Y L. lows TORNEYS.

W Q QUW Patented Aug. 1932 WALTERSQBRADBURY Ann AUBREY 1;. LOWE, or ILION, nnwyonx, nssrsnoas 'ro REMINGTON AIR-MS COMPANY, rno.,noonroaerro1v or D LA AR FIREARM Application filed Marches, 1931; Seria1 N'o.,524,534.

This invention relates tofirearms and has i been illustrated as applied to a firearmem :bodying anaction of the so-called Martini j type, one example of which is illustrated in 5 the patent to Martini, No.'90,614, May 25,

One object of the invention is to provide an improved breech locking device particularlyr adapted for use in a breech mechanism of -the general type disclosed in said Martini patent. V Y

i 1 GA further object of the invention is to provide an efiicient ejector mechanism particu- Ilarly adapted to a firearm 5. type. j i

In the drawing:

of the Martini T Fig. 1 is asect1onal elevation on substan- I tially a central line through the barrel. and v forearm and through thereceiver upon a line adj acent one receiver wall. i Fig. 2 isa plan view ofthe receiver.

I j Figygisa fragmentary side elevation of the inside of a receiver wall. l

f Fig. iis a perspective view of the improved ejector detached from the firearm.

i Thefirearm comprises a barrel assembly which includes a barrel 10 and fore-end 11,"

secured in a breech piece 12. Said barrel assembly is attached to a receiver, indicated .80 generally by the numeral 13, by means of a take-down screw 1 1 which, in the present construction, extends upwardly through an aperture in the bottom of the receiver and is threaded into the breech piece 12, in the man- 85 nerillustrated in Fig. 1. i 'Pivoted on a stud 15, which extends transversely of the receiver, is a breech block 16,

, thetop of which is exposed through the open top ofthe receiver. The breech is opened by l swinging the forward end of said breech block downwardly about the stud 15 in the manner to be presently described. Accordmg to the present invention, the breech block I is provided near its forward end with lateral .45 lugs orribs 17 adaptcd,in the closing movement-of the breech block, to engage in suitable grooves 18 in the sides ofthe receiver. Therecoil of the breech block is thus taken up'by the margins of said slots and, to insure 0 engagement of the lugs 17 therewith preventingthe recoil from being transmitted to the stud 15, the opening in the breech block which receives the stud 15 is slightly elongated transversely, as indicated in Fig. 1.

The breech block is swung about the pivot 15 to open and close thebreech by the manipulation of a finger piece 19 pivoted in the receiver at 20 and provided with upstanding arms 21 which engagesuitable cam slots in the sidesot thebreeeh block. 'Said'breech block contains a firing pin or striker 22 controlled by'a sear 23 having a forwardly proj ecting part 24 adapted for engagement with the trigger 25. Saidstrikeris cocked by the movement of finger piece 19 necessary to open the breech throughtheengagement of anupwardly facing shoulder 211 on said finger piece with the underside of the part 24 of the sear.

I Pivoted at 26 in the, breech piece is an ex- "tractor 27, the upper end of which lies in a suitable recess in said breech piece and barrel 10 and is suitably notchedand rabbeted to.

receive the lower part of; the rim of a cartridge in the chamber and to form a continuation of the breech face of the barrel. Said extractor is provided with a rearwardly extending projection28 adapted'to be engaged by the breech block in its downward or breech opening movemenh'thereby loosening or extractingJthe cartridge or cartridge shell in the-chamber. v

The. present invention contemplates the provision of an ejector device which may be constructed as follows: In a suitable recess in the fore-end 11 is inserted a housing 29 adapted to contain an ejector spring 30 and a spring follower 21. Thespring follower projects from said housing and is formed integral with or suitably connected to an ejector 32 which passeslthrough an aperture in the breech piece 12 andterminates immediately in front of the extractor 27. The connection from the spring follower 31 to the ejector 32 may comprise a followerhead 33 and guide member "34; cutout to conform to the curvature of. the barrellO to accurately guide the movement of the ej ector. It will be apparent that if the cartridge in the chamber has been fired, the fired shell will be expanded into 7 C3 tractor.

suiiiciently tight contact With-the chamber. Walls to remain unmoved until the breech block engages the extractor tail 28; notwithstanding the extractor is, during downward L) movement of the breech block, subjected to the pressure of ejector spring 30., ,Nhen the breech block engages the tail 28 thecartridge Will be loosened and thereupon" the extractor is snapped rearwardly by the ejfect'orspring, 7 '13 thereby positively,andforcibly'ejecting the firedishell; The movement given to the shell by the ejector'is a rearward movement and it is de 1 sirable vthat the shell be deflected toque side. For this purpose the top of the breech block .is provided With a deflector surface 35 by which the shell is directed to one side, thus causing the shell to fall entirely clear of the firearm and the user thereof. l r a I V a The embodiment of the invention illus- '7 V V v e trated'in: the drawing and described herein is to-be understood as illustrative, rather than restrictive, the'invention bein susceptible to embodiment in" other forms',]all falling Within the scope ofthe appended claims. "l Vhat isclaimed is: I j 7 '1. In a firearm, a'receiver, a pivoted stud in said receiver, a breech block comprising an 7 apertureadapted to receive said pivotedstud," '55 co-operating breech locking"shoulders onsaidrbreech block and receiver, the pivot stud 7 receiving aperture in said breech block be- 7 'ing elongated to insure engagement between .7 'saidshoulders. 7 Q i i V 2'. In a firearm comprising :a pivoted breech block and'an extractor device adapted for actuation by said breech block,yanejeotor I v i mechanism comprising a plunger in engage? ment with said extractor and 'afspring'inrc'e' pelled member adapted to'engageand actu- 7: ate saidplu'nger; 1 s V K 3. I a firearm comprising a receiver, a 1 breech block pivoted therein, an extractor device adapted for'actuation by said breech block andafore-end piece; an ejector device comprising a spring and/spring follower" housed in said fore-end piece and an ejector" plunger associated with saidispring follovver- [and adapted to engage and actuate saidex- 'AUBREY L'LOWE.

WALTER S. :BRADBURY.

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