U.S. patent number 3,707,899 [Application Number 05/059,046] was granted by the patent office on 1973-01-02 for firearm muzzle deflector.
Invention is credited to Walter E. Perrine.
United States Patent |
3,707,899 |
Perrine |
January 2, 1973 |
FIREARM MUZZLE DEFLECTOR
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.
Inventors: |
Perrine; Walter E. (Phoenix,
AZ) |
Family
ID: |
22020473 |
Appl.
No.: |
05/059,046 |
Filed: |
July 29, 1970 |
Current U.S.
Class: |
89/14.3 |
Current CPC
Class: |
F41A
21/36 (20130101) |
Current International
Class: |
F41A
21/00 (20060101); F41A 21/36 (20060101); F41c
021/18 () |
Field of
Search: |
;89/14C |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Bentley; Stephen C.
Claims
What is claimed is:
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.
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.
Description
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 that the 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.
SUMMARY 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 of a 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 11
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.
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.degree. to
15.degree. 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 shell's
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.
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