US1381291A - Firearm - Google Patents

Description

C. B. DYGERT.

FIREARM.

APPLICATION FILED IAN.Io. 1920.

1,381,291 v PatentedJune 14, 1921.

WITNESSES: INVENTOR Niro STAT NT OFFICE.

CHARLES '.B. DYGERT, OF ILION, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO REMINGTON rARMS COMPANY, INC., OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

FIREARM.

Specification of Letters Patent. Patented June 14, 1921.

Application led January 10, 1920. Serial No. 350,561.

especially applicable to that class of smallarms among others, which are commonly designated as auto-loading pistols, and which usually comprise three kprincipal members, including a frame; a bolt-carrier (or breechslide) slidably mounted on the frame; and a non-reciprocating barrel slidably supported at its forwardend in the bolt-carrying slide, and at its rear end detachably connected to the frame.

My present invention comprises an improvement on the invention shown and claimed in the application of John D. Pedersen, S. N.'204,149 (renewed as S. N.

i 314,426) which relates to an improved in- Aso terlock connection for detachably uniting the barrel to the frame, comprising a transverse barl or cross-bar which directly andl releasably unites the barrel to the frame.

One of the principal objects of this invention is to provide such a cross-bar which shall be continuallysubjected to frictional control by a force derived from the breechslide-actuating spring and transmitted to said cross-bar through the barrel, breech- `slide and frame.

More specifically it is an object to provide clearance between the barrel and frame and otherwise so to arrange the various coacting parts that the barrelv and frame uniting cross-bar continually supports the reaction of the breech-slide-actuating spring and therefore is frictionally held in lace thereby against ready inadvertent displacement. These and other features', capabilities and advantages of the invention will appear from'VI the subjoinedA detail description of one embodiment and a modification thereof,

y illustrated in the accompanying drawings,

Vin which Figure 1 is aside elevation, partly in seclocated in crosstion, of an automatic pistol embodying my present invention;

Y Fig. 2 vis a sectional view on the line 2-2 of Fig. 1, and

Fi 3 is a-partial View similar to Fig. 1, showin a slight modification.

In said drawings the numeral 4 designates generally the frame of an auto-loading pistol of any type to which my invention is applicable. This frame member may in practice oe of any suitable design and proportions, the design shown being substantially that illustrated in application, S. N. 42,774,

led July 30, 1915, by John D. Pedersen, which may be considered typical of various other such` frames well known in this art. The frame is formed with a handle `5 of usual or suitable form.

The numeral 6 designates the breech-slide, shown sldably mounted on the frame 4 by the usual interengaging rib and groove joint 7. The breech-slide 6 carries the breech block 8 which may be rigidly connected to the slide or be relatively movable as in said Pedersen application S. N. 42,774. The

-numeral 9 designates the trigger which may be of usual form and serves to' release the firing mechanism (not shown) The barrel 10 1s substantially7 inclosed within the breech-slide chamber, tne forward end being slidably supported in the bearing 14 which may be formed as a bushin Isecured to the breech-slide. The bus ing shown herein is the sub'ect matter of an application filed by C. C. lioomis, December 4, 1919, S. N. 342,397. Surrounding the barrel and resting against said bearing is the breech-slide-actuating spring 13, the rear end of which bears against a shoulder on the barrel or againsta ring 15 which may be formed with a sleeve extension 15 surrounding the first few coils of the spring and concealing them from view through the ej ection port 1'6.

The rear end of the barrel vand the frame are formed with cooperating interlock portions as a lug 11 on the barrel fittingin a recess in the frame. fixed relation to the frame, both 'vertically and horizontally by means of a cross-bar 12 bar Seats such as apertures The bami is heid in 4 in the frame and 10 in a'fportion of the A barrel or an extension thereof as the lug 11. This cross-bar may be of circular cross secinadvertent removal.

tion the reaction of the breech-slide-actuat-l ing spring is always supported by the crossbar 12 except possibly during'the very short interval when the bullet is passing from thel barrel at which time the cross-bar restrains forward movement of the barrel. The crossbar 12 is therefore at all times under africtional 'control and is thereby Vheld against Another important feature of my present invention is that the hole 10 is entirely in the barrel and the hole 4 is entirely in the frame. For this reason, these holes are more easily formed and more accurately located than would be the case if they extended to the edge of the frame or barrel. For this reason, also, the barrel is fixedly secured to the frame against not only longitudinal but also against vertical movement, although the interlocking portions of the barrel and frame are not undercut or dovetailed as has been proposed heretofore. This results in a cheaper constructiom. without dependin upon the breech-Slide 6 to llimit the upwar movement of the barrel. This rigid construction provides a more accurately shooting arm by preventing any vertical movement of the barrel and Vresults in a more rellable arm in that the primer is always properly alined with the firing' pin point.

It is well-known that in manufacturing l the parts of firearms of the general class herein represented, it has become customary to make cylindricalopenings or holes at certain convenient points in the part or parts from which these parts may be locatedby -means of -suitable plugs which are a part of the fixtures by means of which the succes- -sive finishing operations are performed in the manufacture of the firearm. Accordlngly in my present improvements, es e- ."cially when the barrel-and-frame-unitlng lpin as 12, is a c lindrical one, the bore at 4 in th -e frame' an Y -the bore at 10 in the barrel,

' ma be utilized as gaging points from which to ocate other cuts, and the making of other specific dlmensions, on the rearward end of t e .barrel and with relation to working faces on the frame and within the slide 6, so that these 'several parts when the mechanism isl assembled, shall havev an accurate relationship thus` indirectly obtained. Thus, as regards the rear face lof the barrel and the corresponding forwa'rd. face of the frame, these may now bemade with a low degree of accuracy providing a free space at 17 "and also thereby lavoiding the necesslty for a highly precisioniz'ed locating of' the said'barrel and frame surfaces. By these-means the machining operations in the 'production of the arm l found of great utility in holding the cross, bar in place during the time the recess in the slide is passing the end of the cross-bar in the device of said application.

The cross-bar being merely frictionally held may be readily withdrawn for disassembling the arm which in the form shown may be done b movingv the breech-slide and barrel forwar ly off the frame. Y

What I regard as m invention and desire to secure by Letters atent of the United States is 1. In a firearm, the combination FWith-a` frame and a barrel, of a slide supported for.

reciprocating movements forwardly andV rearwardly on the frame',V Isaid frame and barrel each having' near the rearward end. of the barrel interlock portions provided transversely with alinedl cross-bar seats, a barrel-and-frame uniting cross-barfdisposed in said alined seats, and' a Slide-actuating spring bearing againstsaid slide and against said barrel, the parts'being so fitted that the Areaction of said spring 'is supported entirely by said cross-bar, whereby it is frictionally held in place in said cross-bar seats.

2. In a firearm, the combination with a frame, of a chambered slide supported on the frame and having depending slde-walls slidably engaging vthe frame, a barrel in the chamber of the slide and having an enlarged rearward end, a slide actuating 4sprlng reacting against said enlarged barrelend, said enlarged barrel-end and the frame having interlock portions provided with alined cross-bar seats, and -a cross-bar disposed in said alined seats of the frame. and barrel; said parts beili'g so fitted that the reaction of said spring is supported by said cross-bar, whereby it is frictiona'lly held in place in said cross-bar seats.

3. In a firearm, the. combinationwith a frame, of a chamberedslide supported on the frame and having de ending side-walls slidably engaging the rame, a barrel in the chamber of the slide and having an enlarged rearward end, a slide-actuating spring' reacting against said enlarged barrel-end, said enlarged barrel-endI and the frame having interlock .portions provided' with alined cross-bar seats, and a cross-bar dis osed in said alined seats of the frame an barrel; the-parts being so fitted that the barrel is restrained against longitudinal movement by said cross-bar, which therefore supports the reaction of said spring and is frictionally heldin place thereby. f

4. In a firearm, the combination with a. frame and with a barrel, of a slide supported "for reciprocating movements forwardlyand rearwardly on the frame, said frame and barrel each having near the rearward end of the barrel interlock portions provided transversely with alined cross-bar seats, a barreland-frame-uniting cross-bar disposed in said alined seats, and. a slide actuating s ring bearing against said slide. 1and barre the said parts being so fitted that forward and rearward movement of the barrel -is restrained only by said cross-bar, whereby said cross-bar supports the reaction of said spring and is frictionally held in place thereby.-

J 5. In a firearm, the combination with a frame, of a chambered slide supported on the frame and having depending side-walls slidably engaging the frame, a barrel in the chamber ofthe slide and having an enlarged rearward end, a slide-actuating spring reacting against said enlarged barrel-end, said enlarged barrel-end and the frame having' interlock portions provided with alined cross-bar seatsLand a cross-bar disposed in said alined seats 4of thel frame and barrel; the said parts being so fitted that longitudinal movement of the barrel is restrained only bysaid cross-bar, whereby said crossbar supports the reaction of said spring and y is frictionally held in place thereby.

CHARLES B. DYGERT.

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