US2345833A - Gun barrel lock - Google Patents

Description

lllll'll 4, 1944., H. scHlRoKAUER 2,345,833.

- GUN BARREL Loox Filed March 24, 1942 J n i lz vl@ vue/n im', Henry Schirm/fader,

Patented Apr. 4, 1944 UNITED STAT ES misses GUN BARREL LOCK.

Henry Schirokauer, New York, N. Y., assgoi" to SchirgurlI Corporatioma corporation ol Dela- Application March 24, 1942, Serial No. 436,032

(Cl. i2- 75) V- Claims.

VThe invention relatesl to mechanism flor locking. the gun barrel inthe gun frame. While gun barrels generally should be readily demountable it is, of course, important that when. the gun is in use the barrel be more orl'ess rigidly locked in place in the frame, so asto be heldY more or less immovable and properly meet the stress caused by the ring of the gun.

The present invention is not confined to use in any specic type of gun and phases of the irivention may` be readilyV adapted and employed' i'n guns of many different characters. For ex-V planatory' purposes the invention as applied' to one type of gun may be referred to. t may be particularly' convenient for this purpose to describe a locking devicer in an automatic' or' semi;- aut'omatio gun in which there maybe mounted' in the frame parallel to` the gun barrel a cylinder tube inY which a cylinderis' operated by explosion gases ofv the gun.

In such an arrangementthe' gun barrel itself may beseated in a socket inv a' fram-e and' mayJ be provided with a step or enlarged portion adapted to t snugly against the fram-e;

There may bea-n opening inthe frame' through' which may pass a,r locking-member to engage the barrel. The looking member may have onev side engage a side of the opening inA the frame. At its other sidethe locking member may be pro-- videdV with` a. seat for engaging the gun-i barrel. The engagement may preferably be an arcshaped tapered engagement providing a. large surface contact.. The' seat onthei locking member' may be tapered' or bevelledi andmay engage a portion or recess in.; the gun. barret appropriately tapered or' bevelled tot cooperate therewith ork only one surface. may be tapered'.` The` arrangement thuswill be such that thel locking member. tends to: bind between the edge of the opening in the framel and the gun barrely irr such. a way as to; draw' and hold the projection or seat onthe gunbarrel tightly inr place against the. frame.

The. locking, memberV may be supported; adl- J'usted, operated'and' held- 'or' fastened. in any suitable manner. A speciiic adaptationY oi" the invention may contemplateY a'y U-sh'aped' locking member pivotedf between its ends about the' pis'- tony cylinder, the locking member which'V maybe bevell'ed or taperedbeing arranged? at one end'- and" the other end' beingv provided? with an adijusting: means suchv as a thumb screw.;Y which may-bear against the adjacentside of thetlframe in. such a Way as to pullA and4 hold-the lock-ing memberV tightly and snugly in contact with theappropriate portions ofv the opening; inthe frame and the part of the barrel to beengaged.

In the accompanying. drawing-is shown. one specific .emb odimentof. the. invention.. Figure l-is aside elevationof a gun embodyingthe-improved gun barrel lock. Fig. 2 is a fragmentary longitudinal transverse section on the line 2==2 di Fig. 1 looking in the directinindicated by the arrows. Fig.v 3 is; a; transverse verticalr section through the lockinggm'eehanism showingit in engaging position. Fig; 4is-atransversevertical,section similar to Fig. 3 showing the locking mechanism in unenga'ged position. Fig. 5 is a fragmentary enlarged section of the lock engaging portion indicated in Fig. 2 somewhat deformed to emphasize phases. vThe Various gures are made on different scales,- for the purpose of more clearly lindicating the ldetails of the mechanism.

The invention: may be employed'with guns of various types but has-been illustrated in connection' with an automatic or semiautomatic gun in which. there vis a barrel Il; held A the nframe i Iiwhich also holds agas--tube IZLwhich may act as the cylinderior., apiston-causing the operation of thegun. This mechanismis known in vthe art andforms nojpa'rt. of lthe present invention and therefore need not be further described.v The cylindrical tube |22n shown is ar-` rangedv inA the casing. IIlp'arall'el. `toV the barrel IU. Asr shown the tube l2`` 'tsiin a seat or socket in the frame' l'f above the barrel f' which itself has a seatA orA socket `l3` in the frame Il. VOn the barrel l'' is a projection shown as? a ring Ifi' which may engage the end ofv the seat f3 and' properly position the b'ar'r'el in the frame" l'l. It will be noted thatV the' enlargement I4' is'toward the front end' of tne'barrei' It' so that the' barrel may' be inserted into its seat'.v |y3j`byibeing' placed' therein from'thefront end of the frame ll.`

A slot. or' aperture l5jis provided in the upper part of the frame Il'so as to expose both"' the tube ill and the barrel' l0. may be rotatablyv mounted in any s uitableman` ner such as on the tube I2 a' barrel locking mechanism Hi which as shown is-madeK more or less U-shaped" in form having onel dependingt arm Il' extending outsidethe frame Il at whichy point it is threaded to receive ascrew I8 having a knurled head' I8'. mayfengage thetf'ace'fof the frame H soV as to adjust thelockin'g mechanism.

Atthe' slot the barrel IB is provided with al circumferentially disposed arc-shaped slot 2`= which is adjustedto be open onthe side of the barrelV oppositethe screw f8; The rearward edge of the:- srl'ot 2U maybe-suitably bevelledfas'at" 2li,

the' taper being inward tbvalfd thebottom ofI the' slot'Z. The arm 22 oflthe locking member I6.- opposite the arm. Hi's more or less: arc-shaped.l but preferably ona radiussomewha'tlarger-than the radiusfof thev` barrel i0". Preferablythe` front side23of the arm'22fis flatfor straight'and'make's contactzwiththe frame Il` at thetro'nt edge of the opening-l5?. Th'ezrear side -of the arm 22 may bebevel-led'or tapered at Maso astoengage the bevelled wall 2lof. the barrelv lli.A As, in dicated in Fig. 4 when the screw I3 is unscrewed At this slotv there' The: end ofthe screw l in its seat the screw I8 may be screwed in and as its end engages the frame I I it will force the bevelled edge 24 of the arm'22 into engagement with the bevelled edge 2| of the barrel slot.

This tends to jam the arm 22 between its eni.

gagement at 23 with the frame VII Vand, the. bevelled face 2| on the barrel IU. At' the same time this action pulls the stopor collar I4 on the barrel snugly into engagement with the front end of the frame I This holds or locks the barrel tightly into its seat in the frame so as toiresist the tendency to movement caused by the fir-V ing of the gun.

In order to make the locking member I6 operate it must be moved toward or from the axis of the barrel. This may be done in a variety of ways. One convenient Way of providing for this movement is shown in the drawing, by pivoting the locking member in the frame on the cylinder I2. Y

The bevelled v surface 24 on the arm 22 is arcuate and extended in area so that as the locking member I6 is operated it may readily adjust itself and reach a proper seat on the arcuate bevelled lportion 2| of the gun barrel YAs indicated in Fig. Zand Fig. -the slot 20 in the barrel Ii) is somewhat larger than the width of the arm 22 of the lock. The edge of the opening in the frame overhangs the front Wall of the slot 2'so that adjustment or Wear is taken care of. It will be noted that there is a space between the front edge 23 of the arm 22 and the front edge of the slot 2D.j Similarly the rear wall 25 of the Vslot `in Vthe frame is spaced away from the rear wall of the arm I'I so that'as the members wear adjustment is possible and the parts will not bind out of locking position. This arrangement not only allows for continued opere ation of the locking mechanism if there should be wear in the parts but also provides for tolerance in manufacture so that slight inaccuracies which may be unavoidablemay not interfere with the eifective operation of the device. It willbe noted Ythat the contact of the bevelled surfaces 2| and 24 is about 90 against the "direction'o'f the forces which try to move the barrel out on firing thegun. This may be a' most convenient arrangement butit is not essential to all phases of the invention. It will be noted that the locking is here effected by the engagement of two bevelledY surfaces 2| and 24. This may bean advantage and may provide especially effective locking but is not essential since locking might be carried out if one or the other of the surfaces 2| and 24 were straight instead of bevelled so that there might be a point or line wedgingcontact between the members instead ofthe surface contact illustrated. f v,

It will be noted that thebevelled edge 24 of the arm 22 is arc-shaped and on a radius which may be somewhat larger than the radius of the barrel I0 and also larger than the radius of the bottom of the slot 20 in the barrel. This arrangement may not be essential but may be particularly desirable since it aiords easy insertion and' withdrawal of the barrel when the arm 22 is moved only a slight distance so as not to interfere with. the barrel. At the same time this arrangement by this variation of radius of the arcs allows a goodseat and a large face Ycontact between the bevelled portions 2| and 24. The

actual arrangement illustrated in which the various arcs may be of different radii and drawn from different centers may be advantageous but is not essential to the present invention. It will be noted, however, that in Fig. 3 the center of the arc of the arm 22 may be to the right of the "center of the barrel I0, while in the unengaged position indicated in Fig. 4 the center of the arc rof the arm 22 may be to the left of the center of the barrel I0.

It will be noted that when released the locking mechanism I6 may be held from swinging too far out of' position by a stop 2G which may be a continuous portion of the frame II bridging the slot I5 in the frame. Y

The mountings and the operation of the device as well as the relativev sizes, proportions and arrangement may be varied within wide limits without departing from the pr'esentinvention set out in the appendedY claims. f

I claim as my invention:

1. In a gun, a frame, a barrel in the frame, a projection on the barrel at the frame entrance, an arcuate recess in the barrel, a'lat wall on the front side of the recess, a `tapered wall on the rear side of the recess, a 4cylindrical tube in the frame parallel to the barrel, a locking member having'two arms and pivoted between the arms on the cylindrical tube, an arcuate tapered surface on one side of one arm, a flat surface on the other side of the last mentioned arm,A the last mentioned arm being adapted and arranged to extend through the frame and into the arcuate recess in the barrel, and a bolt threaded through the other arm and engaging the frame so as to cause the tapered side of the first mentioned arm to engage the tapered wall of the barrel recess to force the projection on the barrel into close engagement with the frame and also force the at side of the first mentioned arm into close engagement with the frame.

2. In a gun, a frame, a barrel in the frame, a projection on the barrel at the frame entrance, an arcuate recess in the barrel, a tapered wall on the rear side of the recess, a locking member having two arms and pivoted between the arms on theY framean arcuate tapered surface on one side of one arm, a flat surface on the other side of Vthe last mentioned arm, the last mentioned arm being adapted and arranged to extend through the frame and into the arcuate recess in the barrel, and a bolt threaded through the other arm and engaging the frame so as to cause the tapered side of the iirst mentioned arm to engage the tapered wall of the barrel recess to force the projection on the barrel into close Vengagement with the frame and also forcel the .flat s ide of the rst mentioned arm vinto close engagement with the frame. t Y

3. In a gun, aframe,fa barrel in. the frame, a projection on the barrelA at the framenentran'ce, a recess in the barrel, a tapered wallon the rear x side of the recess, a locking member having two (i ii arms and pivoted between the arms on the frame, a tapered surface on one side of one arm, the last mentioned arm being adapted and arranged to extend through the frameand into the recess in the barrel, and a bolt threaded through the other arm and engaging the frame so as to cause the tapered side of the rst mentioned arm to engage the tapered wallv of the barrel recess to force the projection on thebarrel into close engagement with the frame and also force the other side of the first mentioned arm into close engagement with the frame.

4. In a gun, a frame, a barrel in the frame, a stop for the barrel, a recess in the barrel, a tapered wall on the rear side of the recess, a locking member having two arms and Ipivoted between the arms on the frame, a tapered surface on one side of one arm, the last mentioned arm being adapted and arranged to extend through the frame and into the recess in the barrel, and means on the other arm to cause the tapered side of the irst mentioned arm to engage the tapered Wall of the barrel recess so as to force the other side of the first mentioned arm into close engagement with the frame.

5. In a gun, a frame, a barrel in the frame, a stop for the barrel, a recess in the barrel, a tapered wall on the rear side of the recess, a cylindrical tube in the frame parallel to the barrel, a locking member having two arms and pivoted between the arms on the frame, a tapered surface on one side of one arm, the last mentioned arm being adapted and arranged to extend through an opening in the frame out of contact with the rear wall of the opening and into the recess in the barrel but out of contact with its front wall, and means on the other arm to cause the tapered side of the first mentioned arm to engage the tapered wall of the barrel recess so as to force the other side of the first mentioned arm into close engagement with the frame.

6. In a gun, a frame having an aperture therein, a barrel in the frame, a stop for the frame on the barrel, a bevelled surface on the barrel adjacent the aperture, a locking member pivoted in the frame and swinging transversely of the barrel adapted to enter the aperture, a bevelled surface on the locking member engaging the bevelled surface on the barrel to jam the locking member between the bevelled surface and the side of the aperture and hold the frame against its stop, and means for holding the members in engagement.

7. In a gun, a frame having an aperture therein, a barrel in the frame, a stop for the frame on the barrel, a bevelled surface on the barrel adjacent the aperture, a locking member pivoted in the frame and swinging transversely of the barrel adapted to enter the aperture out of contact with one side thereof, a bevelled surface on the locking member engaging the bevelled surface on the barrel to jam the locking member between the bevelled surface and the other side of the aperture and hold the frame against its stop, and means for holding the members in engagement.

8. In a gun, a frame having an aperture therein, a barrel in the frame, a stop for the barrel, a bevelled surface on the barrel adjacent the aperture, a locking member pivoted in the frame and swinging transversely of the barrel adapted to enter the aperture, a bevelled surface on the locking member engaging the bevelled surface on the barrel to jam the locking member between the bevelled surface and the side of the aperture to draw the stop against the frame, and means for holding the members in engagement.

9. In a gun, a frame, a barrel in the frame, a stop for the barrel, an arcuate bevelled surface on the barrel, a locking member pivoted in the frame and swinging transversely of the barrel to engage the frame, an arcuate bevelled surface on the locking member, and means to force the bevelled surfaces into wedging contact adapted and arranged to lock the barrel in the frame and the frame against the stop.

10. In a gun, a frame, a barrel in the frame, a stop for the barrel, a locking member pivoted in the frame and swinging transversely of the barrel to engage the frame, a seat in the barrel for the locking member, engaging faces in the locking member and in the seat, an arcuate bevelled surface in at least one of the engaging faces, and means to force the engaging faces into wedging contact adapted and arranged to lock the barrel in the frame and the frame against the stop.

11. In a gun, a frame, a barrel removably mounted in the frame, a stop for the barrel, a lock for holding the barrel and the frame in position comprising a U-shaped member mounted in a slot in the frame about the barrel adapted to swing transversely of the barrel, an adjusting member at one end of the U-shaped member adapted to rest against the frame, a bevelled surface on the other end of the U-shaped member, and a correspondingly bevelled groove in the side of the barrel opposite the adjusting member to receive the bevelled surface at the end of the U-shaped member when the adjusting member engages the frame and arranged and adapted to draw the frame against the stop.

12. In a gun, a frame, a barrel removably mounted in the frame, a stop on the barrel near the end adapted to fit against the frame a groove on the barrel spaced from the stop, a lock for the barrel comprising a U-shaped locking member, a slot in the frame to receive the locking member and hold it about the barrel, an adjusting member on one end of the U-shaped member, a bevelled surface on the opposite end of the U-shaped member and means for operating the adjusting means to cause the bevelled surfaces to form a close wedge in the groove of the barrel to force the barrel rearward of the frame and bring the stop on the barrel in close contact with the frame.

13. In a gun, a frame, a barrel in the frame, a stop for the barrel, a transverse slot in the barrel, a transversely moving locking member narrower than the slot mounted on the frame, an aperture in the frame wider than the locking member and i in register with the slot, and means for forcing the locking member into the slot and aperture and into contact with the forward Wall of the aperture and into wedging contact with the rear Wall of the slot and arranged and adapted to draw the frame against the stop.

14. In a gun, a frame, a barrel in the frame, a stop for the barrel, a transverse slot in the barrel, a transversely moving locking member narrower than the slot mounted on the frame, an aperture in the frame wider than the locking member, engaging seats on the locking member and the slot at least one of which is arc-shaped and tapered, and means for forcing the locking member transversely of the barrel and into contact with the forward wall of the aperture and the rear wall of the slot and arranged and adapted to draw the frame against the stop.

15. In a gun, a frame, a barrel in the frame, a recess in the barrel, a tapered wall on the rear side of the recess, a locking member pivotedon the frame adapted and arranged to extend through the frame and into the recess in the barrel, a tapered surface on one side of the locking member, and means to cause the tapered side to engage the tapered wall so as to force the other side of the locking member into close engagement with the frame and draw the frame into contact with the stop.

HENRY SCHIROKAUER.

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