US3707899A

US3707899A - Firearm muzzle deflector

Info

Publication number: US3707899A
Application number: US00059046A
Authority: US
Inventors: W Perrine
Original assignee: Individual
Current assignee: Individual
Priority date: 1970-07-29
Filing date: 1970-07-29
Publication date: 1973-01-02
Anticipated expiration: 1990-01-02

Abstract

A deflector for firearms threaded to the end of a gun barrel and employing one or more discrete holes on the top of the deflector for allowing gasses escaping outward of the gun barrel to impinge on gases baffle surface and deflected by the baffle surface rearwardly where they are further deflected upwardly and forwardly out of the holes for controlling deflection of the firearm.

Description

United States Patent 1191 Perrine [45] Jan. 2, 1973 [541 FIREARM MUZZLE DEFLECTOR FOREIGN PATENTS OR APPLICATIONS 1 lnvemofl m t -g'g g Osborn, 161,457 4 1921 Great Britain ..s9 14 c oemx, riz. z I 29, 1970 Primary Examiner-Stephen C. Bentley [22] Med y Attorney-Warren F. B. Lindsley [21] Appl. No.: 59,046

[57] ABSTRACT [52] US. Cl. ..89/l4 C A deflector for firearms threaded to h end of a gun Int. Cl. ..F4l barrel and employing one or more discrete holes on [58] Field of Search ..89/l4 C the top of he d fl t for allowing gasses escaping outward of the gun barrel to impinge on gases baffle m Cited surface and deflected by the baffle surface rearwardly where they are further deflected upwardly and for- UMTED STATES PATENTS wardly out of the holes for controlling deflection of 118,933 9/1871 Hawley ..89/14 C the firearm. 2,652,326 12/1953 Powell 2,795,005 6/1957 Shape] ..s9 14 c 4 Claims, 3 Drawing Figures 30 12 j; f 15} f 1 4 5 5 11 e 17 I I x l ll 22 z; v l

/I// 1! L H 9 2a 1. 20

PATENTED AI W INVENTOR. M14 752 6 -ee/A/e A TTORNEY BACKGROUND OF THE INVENTION This invention relates to an improved deflector for firearms and more particularly to one which controls deflection of the gun barrel by causing escaping outwardly directed gases to be deflected out of discretely located holes in the deflector.

1. Field of the Invention This invention is particularly directed to firearms employing gun barrels which upon the firing of a cartridge in the firearm initially deflects downwardly at the instant that the bullet emerges from the bore of the firearm followed by a more severe upwardly deflection after the bullet has emerged from the-bore.

2. Description of the Prior Art Recoil eliminating devices have been devised but they generally have been unsatisfactory for the reason that their use caused the firearm to project a loud muzzle blast toward the shooter that was unpleasant. One particular device entraped a portion of the gases expelled from the firearm ahead of the bullet and derived therefrom a component of force extending in a direction longitudinally of the barrel and applied such component of force to the forward end of the gun barrel to place the same in tension immediately prior to the time thatthe bullet leaves the barrel thereby tending to stabilize the same and tending to keep the gun barrel from deflecting out of the line of aim.

None of these devices have been satisfactory since they either did not satisfactory control muzzle blast or choked the exhaust gases by entrapment.

SUM MARY OF THE INVENTION In accordance with the invention claimed a new and improved deflector is provided which substantially eliminates recoil and gun barrel deflection by controlling the direction of movement of the escaping gases emerging from the bore of the firearm following the firing of a cartridge.

It is, therefore, one object of this invention to provide a deflector which will greatly reduce or substantially eliminate recoil ofa firearm.

Another object of this invention is to provide an improved device for controlling the lateral deflection of a gun barrel without creating an undesirable muzzle blast.

A further object of this invention is to provide an improved deflector for gun barrels of firearms which increases the accuracy of the weapon.

A still further object of this invention is to provide an improved deflector for firearms which substantially eliminates lateral upward movement of the gun barrel.

Further objects and advantages of the invention will become apparent as the following description proceeds and the features of novelty which characterizes this invention will be pointed out particularly in the claims annexed to and forming part of this specification.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is an exploded perspective view of a deflector for a firearm and embodying the invention;

FIG. 2 is a cross sectional view of the structure shown in FIG. 1 in assembled position; and

FIG. 3 is a cross sectional view of FIG. 2 taken along the line 3--3.

DESCRIPTION OF PREFERRED EMBODIMENT Referring more particularly to the drawing by characters of reference, FIG. 1 illustrates an exploded perspective view of a firearm muzzle control device 10 for threadedly mounting on the end of a gun barrel 11. The muzzle control device 10 comprises an outer cylindrical member or shell 12 having forward and

rear ends

13 and 14 and upper and

lower areas

15 and 16. Shell 12 is coaxially aligned with a cylindrical web shaped member 17 which is threadedly connected to the end of the gun barrel 16 at its rearward end 18 and is provided with an enlarged apertured collar 19 at its forward end for snugly fitting into a groove 20 in the forward end 14 of shell 12 to cooperatively secured shell 12 to the gun barrel 11, as shown in FIG. 2. The extreme rearward end 13 of shell 12 is conically tapered inwardly, as shown in FIG. 2, for snugly fitting around web shaped member 17.

As shown in FIGS. 1 3 the web shaped member 17 is provided with a plurality of webs 22 extending longitudinally of member 17. Each web comprises a rectangular shaped member the outer edge of which snugly fits against the inside periphery of shell 12 and the inner edge together with the inner edges of the other webs defines an extension of the bore 23 of gun barrel 11. A collar 25 forms the rearward end 18 of web shaped member 17.

As shown in FIG. 2, the shell 12 is locked in place on the end of the gun barrel by means of web shaped member 17 which fits snugly into groove 20 to force shell 12 over web shaped member 17.

The elongated annular spaces provided between webs 22 and the inside of shell 12 outside of the bore extension formed by webs 22 are closed at their forward ends by collar 19. One or more vent slots or openings 26 are provided through the upper walls of shell 12 spaced slightly forward with respect to the rearward end 18 of shell 12.

When a cartridge is fired, the column of air ahead of the bullet will be driven forwardly at a high rate of speed and under high compression. Upon emerging from the bore of the firearm, these gases will expand and a portion of these gases will pass outwardly into the space between webs 22. The horizontal component of pressure indicated by the arrows 27 is directed against the rear surface of the annular collar 19 and this component of force being in substantial longitudinal alignment with the gun barrel ll imposes a tension upon it which will effectively dampen the tendency for the gun barrel to vibrate prior to the time that the bullet leaves the bore.

The horisontal component of the pressure wave is deflected rearwardly of the inside surface of collar 19 until it impinges on concave arculate surface 28 forming the forward surface of collar 25. The gases are then directed into an annular exhaust passageway 29. Passageway 29 is connected to atmosphere through vent opening 26.

As noted from FIG. 2 vent opening 26 is directed forwardly of gun barrel 12 by an angle A which is enough to direct any blast noise away from the shooter.

Although only one vent opening 26 is shown directly connected to annular exhaust passageway 29 other openings 30 may be provided by merely knocking out the remaining portions 31 of the shell so as to increase the venting capacity of the deflector.

lll

Thus, the elongated deflection chamber inside of shell 12 between webs 22 of the web shaped member 17 and shell 12 performs a dual function. The first function is to receive a portion of the gases expelled from the gun barrel by the bullet and to derive therefrom a substantially longitudinal component of force which is applied to the end of the gun barrel to place it in tension for the purpose of dampening the vibrations thereof and for improving the accuracy of the firearm.

This force component is then reflected rearwardly where it is deflected outward of the deflector from between shell 12 and the webs 22 through one or more openings such as opening 26. Since this opening is formed at an angle to a perpendicular line with the longitudinal axis of the deflector to direct the gases forwardly of the gun barrel the unpleasant blast noises are directed away from the user of the firearm.

The second function is to substantially reduce or eliminate the upward deflection of the gun barrel. This is accomplished by venting upwardly through

vent openings

26 and 30 if it is opened to the inside of the deflector.

The size and arrangement of the

vent openings

26 and 30 are important to the most efficient operation of the deflector. It is essential that the vent openings be provided only in the upper surface or areas 15 of shell 12. The vent openings are milled slanting forwardly at a small acute angle A of about 8 to 15 with respect to a plane normal to the longitudinal axis of the deflector.

The vent openings are arranged to extend around an arcuate portion of shell 12 corresponding to about 20 to 30 percent of the shells periphery.

The present device is effective to reduce recoil through control of the escape of high pressure gases which forces the firearm rearwardly and upwardly. The shock wave of the initial blast is cushioned by deflection first against the inside surface of collar 19 and then against collar 25 before it is deflected out of

vent openings

26 and 30.

Although but one embodiment of the invention has been shown and described it will be apparent to those skilled in the art that various changes and modifications may be made therein without departing from the spirit of the invention or from the scope of the appended claims.

What is claimed is:

l. A deflector for mounting on the muzzle of a gun 4 comprising:

an outer cylindrical member,

a coaxially arranged inner cylindrical member,

said inner cylindrical member comprising a collar at one end threadedly mounted to the muzzle of the gun and defining by a plurality of radially disposed webs a gun bore extension through said inner cylindrical member, the other end of said inner cylindrical member being terminated by an apertured plate extending laterally of the longitudinal axis of said inner cylindrical member, the aperture of said plate forming a part of said gun bore extension,

said outer cylindrical member snugly fitting said collar of said inner cylindrical member at one end and cooperating with said apertured plate of said inner cylindrical member at the other end for tightly fitting onto the end of the muzzle of the gun,

said inner cylindrical member defining with said outer cylindrical member an annular chamber longitudinally of said deflector,

said outer cylindrical member having a venting slot in the top thereof spaced forwardly of said collar a predetermined distance, the walls of said venting slot being slanting upwardly and forwardly of the longitudinal axis of said deflector,

whereby gases under pressure emerging from the muzzle of the gun expanding in said annular chamber and being directed forwardly to said apertured plate are deflected rearwardly by said plate to said collar of said inner cylindrical member and deflected upwardly and forwardly out of said venting slot,

said outer cylindrical member being provided with a groove in the forward end thereof which receives said apertured plate for interlocking said inner and outer cylindrical members together on the muzzle of the gun.

2. The deflector set forth in claim 1 wherein the forward end of said collar is of a concave configuration for aiding in directing the reflected gases out of said venting slot.

3. The deflector set forth in claim 1 wherein said inner and outer cylindrical members define an annular chamber adjacent said venting slot.

4. The deflector set forth in claim 1 wherein at least one knocked out slot is provided adjacent said venting slot for increasing the vent openings of the deflector.

Claims

1. A deflector for mounting on the muzzle of a gun comprising: an outer cylindrical member, a coaxially arranged inner cylindrical member, said inner cylindrical member comprising a collar at one end threadedly mounted to the muzzle of the gun and defining by a plurality of radially disposed webs a gun bore extension through said inner cylindrical member, the other end of said inner cylindrical member being terminated by an apertured plate extending laterally of the longitudinal axis of said inner cylindrical member, the aperture of said plate forming a part of said gun bore extension, said outer cylindrical member snugly fitting said collar of said inner cylindrical member at one end and cooperating with said apertured plate of said inner cylindrical member at the other end for tightly fitting onto the end of the muzzle of the gun, said inner cylindrical member defining with said outer cylindrical member an annular chamber longitudinally of said deflector, said outer cylindrical member having a venting slot in the top thereof spaced forwardly of said collar a predetermined distance, the walls of said venting slot being slanting upwardly and forwardly of the longitudinal axis of said deflector, whereby gases under pressure emerging from the muzzle of the gun expanding in said annular chamber and being directed forwardly to said apertured plate are deflected rearwardly by said plate to said collar of said inner cylindrical member and deflected upwardly and forwardly out of said venting slot, said outer cylindrical member being provided with a groove in the forward end thereof which receives said apertured plate for interlocking said inner and outer cylindrical members together on the muzzle of the gun.