US2449571A

US2449571A - Silencer for firearms

Info

Publication number: US2449571A
Application number: US575528A
Authority: US
Inventors: Walker Brooks
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-01-31
Filing date: 1945-01-31
Publication date: 1948-09-21
Anticipated expiration: 1965-09-21

Description

Sept. 2l, 1948. B. WALKER sILENcEn Fon FIREARMS Filed Jan. 31. 1945 D .7 /VV/V/f//V/ Emu nk@ Wnlker se, afmvf [4m Patented Sept. 2l, 1948 UjNlTED STATES PATENT OFFICE 2,449,571 sILENoER Foa HREARMS Brooks Walker. Piedmont, Calif. Application January 31, 194s, serial No. 575,528 4 Claims. (Cl. 89-14) `(Granted under the act of amended April 30, 1928;

The invention described herein may be manufactured and used by or for the Government for governmental purposes without the payment to me of any royalty thereon.

This invention relates to an improved silencer vfor rearms and is especially adapted for use on snipers rifles.

More particularly, it is an object of the invention to provide a silencer capable of being readily applied to or detached from a riiie and which will effectively eliminate the audible report of the weapon.

Another object of the invention is to provide a silencer which will also function as a muzzle brake.

A further object of the invention is to provide a silencer having a sealing element in the form of a resilient, penetrable mass through which the projectile passes and which is substantially seifsealing behind the projectile to thereby prevent the escape of the expanding gases and to thus eliminate the audible report.

Still another object of the invention is to provide a novel means of securely mounting the penetrable mass in a detachable manner so that it can readily be replaced.

Other objects and advantages of the invention will hereinafter become more fully apparent from the following description of the drawing, which illustrates preferred embodiments of the invention, and wherein:

Figure 1 is a longitudinal central sectional view of one form of the silencer shown detachably mounted on the muzzle end of a rille;

Fig. 2 is a cross sectional view of the silencer taken substantially along the plane as indicated by the line 2--2 of Figure 1;

Figure 3 is an end view in elevation looking toward the outer end of the silencer; and

Figure 4 is a view similarto Figure 1 of another form of the invention. f

Referring more particularly to the drawing, wherein like reference characters designate like or corresponding parts throughout the different views, 5 designates a barrel of a conventional rie, the muzzle end of which is externally threaded as seen at 5.

In the embodiment of the invention illustrated in Figures l to 3, 1 designates generally the silencer in its entirety and which includes a hollow body 8 having a restricted bore 9 at its inner end. The outer end of bore 9 is reamed out and internally threaded to detachably engage the threaded portion 6 for detachably mounting the silencer 'I on the rifle barrel 5. The bore 9 is March s, isss, as] 37o o. G. 757) axially aligned with the bore of the barrel 5 and is of a greater diameter, as seen in Figure l. Body 8, adjacent its opposite end, is provided with an inwardly extending annular shoulder I0 which extends into the hollow interior thereof. A relatively thick block of a penetrable, substantially self-sealing material, such as rubber, designated II, is surrounded by a peripheral band I2 of a rigid material which is suitably bonded or otherwise secured to its outer edge. The block I I ts into and closes the open outer end of the housing 8 and the band or ring I2 has its inner edge bearing against the shoulder I0. On the outerr side of the block I I, body 8 is internally threaded to receive an annular nut I3 which bears against the outer edge of the band I2 to combine with the shoulder I0 to detachably fix the block II `securely in the open outer end of the body 8.

A plurality of rearwardly dished disks I4 are mounted on bolts I5 and are held in spaced apart relationship by spacing sleeves I6 ywhich are carried by the bolts I5 and which are disposed between the disks I4. The inner end of the body 8 is provided with internally threaded sockets I1 that receive the threaded ends of the bolts I5 to thereby detachably mount the disks I4 in the body 8. Disks I4 are provided with aligned central openings I8 of substantially the same diameter as the opening 9 which is in alignment therewith. The disks I4, bolts I5 and spacers IB combine to form a muzzle brake.

The body 8 is provided with an enlargement on its under side having an internally threaded outlet or opening I9 to receive the externally threaded open end of a cylinder 20, the opposite end of which is closed.

In Figure 4, another simpler form of the invention is disclosed. including a hollow body 2I which is substantially smaller in diameter than the body 8 and which is provided with an inner end having a restricted opening 22, the outer end `of which is reamed out and internally threaded to detachably engage an annular socket type nut or anged ring 23 which is provided with a restricted opening24 in its outer end. The penetrable block II and its encompassing band I2 are mounted in the socket nut 23 and the inner edge of the ring I2 bears against the outer end of the hollow body 2l and its outer edge bears against the inwardly extending annular shoulder or flange of the nut 23, formed by opening 24. Hollow body 2I is provided with a threaded opening 25 in its side wall preferably in its under side to receive and engage the up-turned, externally anfratti c threaded open'encloi a cylindert, the opposite endlowhichlsclosed.y

` From the foregoing it will be readily apparent vthat when a projectile is reol through the barrel s 5, it will pass through opening and the chem f ings iii and centrally through the penetrable mass i Il formingan openingtherein which, due to the c c resiliency ofthe block Mpls substantially smaller in diameter than the projectile, producing the opening,v and` which will substantially seal or I close behind the projectile tov prevent escape :ofy

the expanding,propelling gases. Disks I# will act i f vas a muzzlefbrake and expanding gases, prevented from escape fromthe body 0 by the block I I, will i escape through the spaces between the disks It and intothe outerportion of the body 8 and the gas trap cylinder 20. The body' 8 and cylinder y20 outer end of said body and engaging the ring to s removably attach the blockand ring to said body,

and a shoulder on said body'againstwhich the 2. In a silencer attachmentfor a nrearm: havi lng a rified barrel, a hollow generally cylindrical body adapted tovbe secured to the muzzleofisaid f barrelas an extension thereof, said body having an open end remote from said muzzle and an f internalannular ange adlacent said end, a disc c f oi rubber, a metallic band bonded to the periphery of said disc, saidband and disc fitting within said body against said flange, to closek said open end, c and aring adapted to threadedly engage said body to removably hold said disc and band f in contact with said ange.

are of sufllcient size to allow for sumcient expan f sion of the propelling gases, so that the major:

kportion of the gases do not follow theprojectilein passingthrough the block II. 'The gases will escape kfrom the body 8 and the cylinder 20 bacll: I through the barrel''and outr through ther breech,y I i not shown, ofthe weapon when the bolt is opened in additionto their limited escape from thek silencer directly tothe atnficsphere.r I I, if desired,k can be initiallyr provided with` a small opening for the passage of theiprojectilai but this openingv can bevequally :well formed by the first projectile .passing therethrough. In

order for the silencer 1 to function most effec@ The I block I 3. In a silencer attachment'forfa rearm having a barrel, a generally cylindrical hollow body adapted to be secured to the muzzle of said barrel 'as kan 'extension'ther'eon said body being closed except for ytheend remote from said muzzle, adisc f c of rubber, a. continuousmetallic bandbondedito the periphery of said idisc, vsaid disck and band being adapted to fit over the ropen end of said body, v f andk a ring adapted to be threaded on said bodyk adjacent its open end, said ring having an internal Lperipheral ange to engage said rdisc and band and removably secure the same over the end of said body asa closuretherefor.

tively for substantially eliminating all sound incii the weapon should be stepped down to below the fired.

f In the embodiment of the invention disclosed in yFigure 4, the silencer functionsthe rsaule except that the parts forming the muzzle brake and including disks I4, bolts I5 and spacers I0 are eliminated.

Various other modifications and changes are contemplated and may obviously be resorted to, Without departing from the spirit and scope of the invention as hereafter defined by the appended claims.

I claim:

1. In a silencer attachment for a rearm having a rifled barrel, said attachment comprising a hollow body adapted to be connected to the muzzle of said barrel as a continuation thereof and. having a central axis, a block of resilient material, a rigid ring bonded to the periphery of said block. a removable retaining member mounted in the y dent to firing the weapon, the muzzle velocity of f Number I The followingA 'references ralityof bolts,circumferentlally spaced about and extending parallel with said central axis, each bolt being supportedat one enclin said body, a plurality of rearwardly-:dished discs mounted' on said,y bolts,iand-spacersmounted on said bolts to n maintain said discs in spaced relation. f

BROOKS WALKER.

REFERENCESCITED ille of this patent:

UNITED STATES PATENTS Name Date Stinson May 24, 1910 Thurler Aug. 15, 1911 Carroll July 4, 1916 Wildner July 17, 1923 Heare Aug. ll, 1942 FOREIGN PATENTS Country Date Germany Jan. 7, 1920 Germany Dec. 20, 1919 France June 22, 1936 Austria Nov. 25, 1925 Number are of record ink the