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Publication numberUS834578 A
Publication typeGrant
Publication dateOct 30, 1906
Filing dateApr 21, 1906
Priority dateApr 21, 1906
Publication numberUS 834578 A, US 834578A, US-A-834578, US834578 A, US834578A
InventorsThomas C Johnson
Original AssigneeWinchester Repeating Arms Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 834578 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

PATENTED OCT. 30, 1906.




1%; 9.1;)km:3nnnyirsanpmx oirmannpnarnpe 5 3- UNIE THOMAS (J. JOHNSON,



Specification of Letters Patent.

Patented Oct. 30, 1906.

Application filed April 21, 1906. Serial No. 313,008.

To all whom it may concern:

Be it known that I, THOMAS C. JOHNSON, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Firearms; and I do hereby declare the following, when taken in connection with the accompanying draw- I heavy recoil-taking ings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a broken view, partly in righthand side elevation and partly in vertical section, of a gun constructed in accordance with my invention; Fig. 2, a view thereof in transverse section on the line a b of Fig. 1 looking rearward.

My invention relates to an improved automatic firearm having a balanced breechblock of the type shown in my Patent No. 681,481, granted August 27, 1901, the object of my present invention being to provide simple and effective means for taking the shock of recoil upon the barrel, and therefore at a point in front of the frame and breech mechanism, which are thus relieved from racks and strains.

With these ends in view my invention consists in the construction to be hereinafter described, and pointed out in the claims.

In carrying out my invention as herein shown I employ a buffer 2, consisting of a thick washer of vulcanized fiber or equivalent material and located in a circular buiferchamber 3, opening forward and formed in a lug 4, made integral with and depending from the rear end of the nonrecoiling barrel 5, which is formed with a threaded stem 6, adapting it to be screwed into the forward end of the gun-frame or receiver 7. The buffer-chamber 3 also receives a steel or equivalent washer 8, the rear face of which rests upon the said buffer 2, while its projecting front face forms a bearing for the rear end of a helical spring 9, which holds it, and hence the buffer 2, in place Within the buffer-chamber 3. The front face of the said washer 8 takes the first shock of recoil by being impinged upon by the recoil-shoulder 10, formed by the rear end of a bearinghead 11, which is connected at its rear end by two parallel side pieces 12 with the forward end of a balanced breech-block 13, the said head 11 and side pieces 12 constituting the forwardly-projecting balancing extension of the balanced breech-block. The breechblock-closing spring 9 is mounted upon a guide-rod 14, passing rearward through the washer 8 and buffer 2 and having its rear en threaded, as at 15, for being mounted in the said lug 4, the extreme rear end of the rod 16 forming a locking-bolt and entering a dowelhole 17 in the gun-frame 7 for locking the barrel against turning under the shock of recoil. At its forward end the spring 9 is extended into a spring-chamber 18, formed in the bearing-head 11, which rides back and forth on the rod 14 in the operation of the gun.

When the gun is fired, the breech-block 13 moves back and compresses the spring 9 until the recoil-shoulder 10 impinges against the steel washer 8, which takes the first shock of recoil and transmits it to the vulcanized buffer 2, which is confined in the chamber 3, the steel washer 8 serving to protect the buffer 2, which by being thus closely confined is enabled to take the shock of recoil without being deformed and disintegrated even though it is subjected to terrific hammering.

I claim 1. In an automatic firearm, the combination with the frame thereof, of a non-recoiling barrel having an integral depending recoil-taking lug containing a forwardly-opening buffer-chamber located below the barrel, a buffer confined within the said chamber. a metal washer adapted to enter the open end of the said chamber in which it confines the said buffer, and a breech-block having a forward extension coacting directly with the said washer and transmitting the shock of recoil to the buffer confined within the said chamber.

2. In an automatic firearm, the combination with the frame thereof, of a non-recoiling barrel having an integral dependingrecoil-taking lug containing a forwardly-opening buffer-chamber, a buffer confined within the said chamber, a metal washer adapted to enter the open end of the said chamber in which it confines the said buffer, a breechblock having a forwardlyprojecting extension coacting directly with the said washer which transmits the shock of recoil to the said buffer, a guide-rod the rear end of which passes through the said bufier and washer In testimony whereof I have signed this and enters the said lug in which it is mounted specification in the presence of two subscrib- I0 and forming a guide for the said eXtension of ing witnesses.

the breech-block, and a breech-blook-olosing 5 spring encirolingthe said rod and at its rear THOMAS JOHNSON end bearing against the said washer and at Witnesses: its forward end bearing against the said eX- ARTHUR W. EARLE,

tension of the block. HERBERT F. BEEBE.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4974493 *Dec 20, 1988Dec 4, 1990Yeffman Paul LShock absorbing buffer and recoil reducer
US5060555 *Mar 30, 1990Oct 29, 1991Smith & Wesson Corp.Slide decelerator for a firearm
Cooperative ClassificationF41A3/78