US2085812A - Firearm - Google Patents

Description

C. C. LOOMIS July 6, 1937.

FIREARM 2 Shets-Sheet l FJ' led April 28, 1934 INVENToR. CRAWFORD CLOOMIS ATTORNEY yJuly .6, 1937. Y Q Q LOOM|S 2,085,812

FIREARM Filed April 28, 1934 2 Sheets-Sheet 2 A r///////////////7//7/ I Patented July 6, 1937 Crawford C. Loomis, Elton, N. Y., assignor to Remixigton- Arms Company, Inc., a corporation of Delaware Application April 28, 1934, Serial No. 722,901 16 Claims (Cl. 4Z16)' The present invention contemplates a'rearm differing quite distinctly from prior practice, in that the receiver and breech block are rigidly united. To open the arm, for ejecting of iired provided withan internal interrupted thread 22, and a corresponding interrupted thread 23 is formed on the barrel. The action is opened by rotating the receiver to disengage threads 22 and shells and for reloading, the entire receiver is 23 and subsequently sliding the receiver rear- 5 moved rearwardly with respect to the barrel. wardly. A guide lug 2li on the barrel and in The receiver comprises a forwardly extending alignment with one section of. the interrupted portion, preferably a tube, which encircles the thread 23 is engaged by the margin 25 of a barrel and is locked thereto, preferably by rotary IeCeSS in JChe receiver t0 Stop its uIllOCking mOVelo movement, at a point in advance of the firing ment and to guide the receiver during its rearchamber. Thus, a substantially solid breech Ward movement. A loading and ejection port 26 mechanism is secured, while permitting opening is cut in the receiver in such a position that when at the breech for reloading. the action is closed its rearward margin is slight- The invention likewise contemplates certain ly forward from the chamber mouth.

l5 improvements in re control mechanism appli- Within the sliding receiver 2| and immediately l5 cable to firearms generally, as will more fully apin the rear of the ejection and loading P01717 25 pear in the specification. is a xed breech block 21 containing an extractor Therearms illustratedis a small caliber single 28 and an ejector 29. The devices for securing shot rifle, but it is tobe understood that the operthe breech block to the receiver may include the ating principles and inventions are of general Shank 30 0f an Operating handle 3l. BOth Walls 20 applicability. of the receiver and the breech block are aper- In the drawings: tured to receive said shank 3l'. Moreover, the Fig. 1 is a fragmentary, sectional side elevation shank 30 may be held in place by the eleei'fOI Ieof a typical rearm embodying the inventions. taining pin 32, Said Pin preferably passing Fig. 2 is a fragmentary, sectional side elevation through aligned apertures in the Shank 30. breech 25 showing the striker cocked. v block 21, and receiver 2l. Pin 32 is received in Fig. 3 is a fragmentary, sectional side elevation a recess 32| (Fig. 5) in the eJ'eeOI 29, Which showing the action open. recess is elongated to afford the ejector the nec- Fig. 4 is a fragmentary plan view of receiver essary limited longitudinal movement. The

30 and barrel, showing the action opened for rebreech bleek and Operating handle shank are like- 30 loading by moving the receiver upon and relative Wise both apertured to receive the firing Dnto the barrel. The flring mechanism comprises a hollow gen- Fig. 5 is a transverse section on the line 5-5 erally cylindrical striker 33. urged forward by a of Fig. 1. striker spring and having secured thereto a 35 Fig. 6 is a fragmentary, transverse section subring Din 34 The fOrWald end 0f the Striker 33 35 stantially on the line 6-6 of Fig. 1. is preferably of reduced diameter, as shown at 36, The firearm illustrated comprises a stock l0 and is encircled by a firing Din retracting spring suitably recessed to containfa trigger II pivoted 3l partially hDllSed in e IeCeSS 33 in the rear end at I2 and urged to counter-clockwise rotation of the breech block. The striker spring 35 Prefabout its pivot by a spring I3. Preferably metal erably encircles a cocking bolt 39 which extends 40 plates I 4 are placed at each side of the trigger, forwardly into the hollow striker 33 and is roto prevent undue friction between the trigger tatably secured thereto'by suitable means. Such and the wood of the stock. The usual trigger means may comprise an annular recess 40 in the guard I5 is secured to the underside of the stock. cocking bolt and a pin 4I fixed in the striker and 'I'he barrel I5 Yrests in a suitable groove in the extending into said recess. The rear end of the 45 front portion of the stock and is secured to the cocking bolt projects from the receiver 2| and stock by such means as a bolt I1, which bolt carries a suitable nger piece 42. The rear end preferably passes through metal bushings I8 and of the receiver is closed by a threaded plug 43 I9 in the stock and is received in an apertured Which may comprise e knlllled heed 44. Said and threaded lug 20 xed to thelgarrel. 'I'he replug comprises a forwardly facing recess adapted 50 ceiver, identified generally by the numeral 2|, to receive the rearward end of striker spring 35 is of tubular form and comprises a front portion and a suitable abutment for said spring. The which extends a substantial distance over the drawings illustrate a floating abutment, idenrear end of the barrel, as clearly illustrated in tied by numeral 45, and comprising a sleeve 46 Fig. 1. Near its forward end the receiver is which extends through the plug 43 and ter- 55 minates adjacent the forward face of the cocking bolt finger piece 42. The plug 43 may be secured against rotation in the receiver by suitable means suchl as a set screw 41 extending through the receiver wall and entering one of two slots 48 in said plug. The floating abutment 45 comprises an outwardly extending lug 49 which is likewise received in a slot 48 in the plug or xed abutment 43. Forward movement of the floating abutment with respect to the plug may be limited by partially closing the open end of said slot. The sleeve d8 comprises a bayonet slot 50 which receives a pin 5I projecting laterally from the cooking bolt 39. When the cooking bolt is retracted and rotated slightly to place the pin 5i in the transversely extending and recessed portion 52 of slot 5B the striker cannot move forward and the gun is thus rendered lsafe.

To fire the gun, the cooking bolt must be retracted slightlyand rotated to bring pin 5i into alignment with slot 50. The striker is then held, in the manner to be hereinafter described, in the position shown in Fig. 2. When the trigger is pulled, the striker advances under the pressure of striker spring 35 and in so doing compresses the firing pin retracting spring 3T. Before the striker has advanced sufficiently to cause the firing pin 34 to contact a cartridge in the chamber, the forward face of finger piece 52 engages the rear end of abutment sleeve d5 and moves the floating abutment forward. This movement of the floating abutment prevents further extension of the striker spring, enabling the compressed retractor spring to return striker and firing pin until the floating abutment again engages the fired plug 43.

Pivoted in the lower part of the tubular receiver and projecting downwardly therefrom is a sear 55. In the construction shown in the drawings this sear is supported on a pivot 56 in a pair of flanges 51 projecting a short distance below the receiver. The shoulder 58 of the sear is adapted to engage a notch 59 in the striker to hold the striker in cocked position, and enters a cut-out 60 when the striker is in its forward position. The cut-out S terminates in a forwardly facing shoulder 60j adapted to engage the sear shoulder 58 and prevent such forward movement of the firing pin as might result in the accidental firing of a cartridge in the chamber. Fig. 1 shows the striker thrust forward to engage shoulders 58 and 6M, the floating abutment d5 being held away from plug d3. The sear is urged to striker engaging position by suitable means such as a spring 5I partially housed within the sear and bearing against a part of the receiver. The sear is controlled by the trigger il, said trigger being provided with a projection 52 for engagement with the sear. The trigger I l is also provided with a stop pin 63 adapted to engage the underside of the receiver and limit the movement of the trigger by its spring I3 when the receiver is retracted. Said stop pin 63 may be associated with an upward projection 64 which by its engagement with the lower and rear end of ejector 29 serves to actuate said ejector. Projection 64 likewise engages a shoulder 65 of the receiver adjacent the ejector 29 and thus serves as an abutment to limit the rearward movement of the receiver.

The operation of the mechanism will be apparent from the foregoing description. It will be seen that the functions of breech locking, fire control, breech unlocking, opening extraction and aosaeis ejection, are all performed by mechanism heldin a receiver which moves upon and relative to the barrel, and that the breech block as a member separate from and movable in the receiver has been eliminated.

What is claimed is:

1. A rearm comprising a stock, a barrel secured to said stock, a receiver slidably and rotatably mounted on said barrel, a breech block fixed in said receiver, an ejector held in said breech block. and an ejector actuator mounted in said stock, said ejector being moved by the rotation of said receiver into position for engagement by said actuator.

2. In combination with a receiver, a breech block in said receiver and an ejector in said breech block; assembly means comprising an operating handle passing through aligned apertures in said breech block and receiver, and an ejector retaining pin passing through aligned apertures in said operating handle, said breech block and said receiver.

3. In combination with a receiven' a breech block, an ejector and a firing pin; assembly means comprising an operating handle apertured to receive said firing pin and passing through aligned apertures in said breech block and receiver, and an ejector retaining pin passing through aligned apertures in said operating handle, said breech block and said receiver.

4. A firearm comprising a barrel, a receiver, means for locking said receiver to said barrel, a breech block in said receiver, and an operating handle extending through and joining said breech block and receiver.

5. A firearm comprising a barrel, a receiver, a breech block in said receiver, an operating handle extending through and joining said breech block and receiver, and an interrupted thread connection between said breech block and said receiver, whereby a movement oi said operating handle rotates said receiver, disengaging said interrupted thread connection and enabling retraction of' said receiver to open the breech. 6. A rearm comprising a barrel, a receiver rotatably and slidably mounted on said barrel, a breech block in said receiver, and an operating handle on said receiver, said handle passing through and fixing said breech block to said receiver.

7. A rearm comprising a barrel, a receiver, a breech block in said receiver, an operating handle passing through and xing said breech block to said receiver, an ejector in said breech block, and an ejector retaining pin passing through and securing together said operating handle and said breech block.

8. A rearm comprising a stock, a barrel secured to said stock, a tubular receiver supported on said barrel and slidable rearwardly thereon from breech closing position to breech open position, a breech block fixed in said receiver, a striker in said receiver comprising a ring pin extending through said breech block. a shell ejector in said breech block, fire control mechanism comprising a striker-engaging scar supported in said receiver and a sear actuating trigger supported in said stock, a shoulder on said receiver, and a. member moved by said trigger into the path of movement of said shoulder and said ejector to limit the rearward movement of said receiver and actuate said ejector.

9. A firearm comprising a barrel, a breech mechanism comprising a tubular member, a

breech closing block secured to said member, a striker in said tubular member having a ring pin, a striker propelling spring, a retracting spring, and an abutment for said striker spring mounted for limited movement in said tubular member and adapted to move forward during a portion of the forward movement of said striker rom said bolt, and a finger piece secured to said bolt.

11. A breech mechanism comprising a tubular member, a hollow striker, a striker retracting bolt extending into said striker, a striker spring surrounding said bolt, a floating abutment for said striker spring, a xed abutment secured to said tubular member, and means for guiding the movement of the floating abutment on the fixed abutment.

12. A firearm breech mechanism comprising a tubular member, a hollow striker mounted in said tubular member and provided with a ring pin, a striker operating bolt extending within the hollow of said striker and rotatably joined thereto, a striker spring surrounding said bolt and partially housed within the hollow of said striker, a floating abutment for said striker spring movably held in said tubular member, and a manipulative head on said bolt adapted to engage said abutment when said bolt is moved forward by said springwhereby said abutment, striker and bolt move a short distancetogether.

13. A manually operated shoulder rearm comprising a stock, a barrel secured to said stock, a tubular receiver comprising a` portion encircling the breech end of said barrel and interposed between said barrel and said stock, and a breech block xed in said receiver, said receiver being shiftable from a breech closing to a breech open position and being wholly supported on said barrel in either of said positions.

14. A manually operated shoulder rearm comprising a stock, a barrel secured to said stock, a tubular receiver rotatably and slidably mounted upon said barrel and wholly supported by said barrel, said receiver comprising a portion encircling the breech end of said barrel and interposed between said barrel and said stock, a breech closing block xed to said receiver, and an operating handle projecting from said receiver.

15. A manually operated shoulder firearm comprising a stock, a barrel secured to said mounted upon said barrel and wholly supported by said barrel, said receiver comprising a portion encircling the breech end of said barrel and interposed between said barrel and said stock, a breech closing block xed to said receiver, an operating handle projecting from said receiver, a trigger mounted in said stock, and re control mechanism mounted in said receiver and movable into operative engagement with said trigger as said receiver is moved to breech closing position.

16. A manually operated shoulder firearm comprising a stock, a barrel secured to said stock, a tubular receiver rotatably and slidably mounted upon said barrel and wholly supported by said barrel, said receiver comprising a portion encircling the breech end of said barrel and interposed between said barrel and said stock, a breech closing block fixed to said receiver, an operating handle projecting from said receiver. a trigger mounted in said stock, means associated with said trigger for limiting the breech opening movement of said receiver, and re control mechanism mounted in said receiver and moved into operative relation to said trigger by the breech closing movement of said receiver.

CRAWFORD C. LOOMIS.

15 stock, a tubular..receivernrotatably and slidably/Y Y

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