U.S. patent number 3,710,683 [Application Number 05/077,834] was granted by the patent office on 1973-01-16 for muzzle-brake with a flash hider for automatic weapons and guns.
This patent grant is currently assigned to Rheinmetall GmbH. Invention is credited to Hans-Joachim Kaltmann.
United States Patent |
3,710,683 |
Kaltmann |
January 16, 1973 |
MUZZLE-BRAKE WITH A FLASH HIDER FOR AUTOMATIC WEAPONS AND GUNS
Abstract
A muzzle-brake with a flash hider for automatic weapons and
guns, which comprises an integral device which includes a first
section forming a flash hider. The latter comprises a conical
sleeve which is widening forwardly. A second section forms a
muzzle-brake and follows the first section. The muzzle-brake has a
rearwardly increasing outer diameter and a cylindrical bore. The
wall of the second section has a plurality of rows of radial bores
distributed over the periphery, and the wall of the first section
has axial bores which are widening in axial and radial
direction.
Inventors: |
Kaltmann; Hans-Joachim
(Dusseldorf, DT) |
Assignee: |
Rheinmetall GmbH (Dusseldorf,
DT)
|
Family
ID: |
5749070 |
Appl.
No.: |
05/077,834 |
Filed: |
October 5, 1970 |
Foreign Application Priority Data
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Oct 24, 1969 [DT] |
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P 19 53 539.8 |
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Current U.S.
Class: |
89/14.2; 89/14.3;
89/14.5 |
Current CPC
Class: |
F41A
21/34 (20130101); F41A 21/36 (20130101) |
Current International
Class: |
F41A
21/00 (20060101); F41A 21/36 (20060101); F41A
21/34 (20060101); F41c 021/18 () |
Field of
Search: |
;89/14R,14B,14C,14D,14E |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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633,617 |
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Oct 1963 |
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BE |
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911,049 |
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Jun 1946 |
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FR |
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Primary Examiner: Bentley; Stephen C.
Claims
I claim:
1. A muzzle-brake with a flash hider for automatic weapons and
guns, comprising
an integral device including
a first section forming a flash hider,
said flash hider comprising a conical sleeve widening
forwardly,
a second section forming a muzzle-brake and following said first
section,
said muzzle-brake having a rearwardly increasing outer diameter and
a cylindrical bore,
the wall of said second section having a plurality of rows of
radial bores distributed over the periphery,
the wall of said first section having axial bores widening in axial
and radial direction,
the outer diameter of said second section is rearwardly increased
relative to the longitudinal axis for an angle of about
3.degree.-5.degree., and
said radial bores are perpendicular to said outer wall.
2. A muzzle-brake with a flash hider for automatic weapons and
guns, comprising
an integral device including
a first section forming a flash hider,
said flash hider comprising a conical sleeve widening
forwardly,
a second section forming a muzzle-brake and following said first
section,
said muzzle-brake having a rearwardly increasing outer diameter and
a cylindrical bore,
the wall of said second section having a plurality of rows of
radial bores distributed over the periphery,
the wall of said first section having axial bores widening in axial
and radial direction,
the cross-section of said radial bores provided in the wall of said
muzzle-brake corresponds about to the caliber of the weapon,
and
the total cross-section of said bores corresponds about with
60-times of the caliber of the weapon.
3. A muzzle-brake with a flash hider for automatic weapons and
guns, comprising
an integral device including
a first section forming a flash hider,
said flash hider comprising a conical sleeve widening
forwardly,
a second section forming a muzzle-brake and following said first
section,
said muzzle-brake having a rearwardly increasing outer diameter,
and a cylindrical bore,
the wall of said second section having a plurality of rows of
radial bores distributed over the periphery,
the wall of said first section having axial bores widening in axial
and radial direction,
a third section following said muzzle-brake adapted to be used with
weapons having a movable barrel, and
said third section including an accumulation chamber to operate as
a recoil amplifier.
Description
The present invention relates to a muzzle-brake with a flash hider
for automatic weapons and guns.
Upon shooting with stronger propelling charges and in case of high
efficiency guns, respectively, muzzle-brakes are mounted on the
muzzle, in order to consume the strong recoil forces occurring upon
emergence of the shell from the barrel. Such muzzle-brakes have
mostly lateral openings and guiding faces, through which the
occurring gases are by-passed. As a disadvantage, however, an
increased flame formation occurs thereby, on the one hand, and a
gas pressure effect, as well as a sight obstruction to the gunner
or the adjacent gunner, on the other hand.
For the prevention of the first mentioned drawback, in particular
with weapons with small calibers, by example, machine guns, the
muzzle-brake is equipped additionally with a flash hider. The known
devices of this type, which consist mostly of a plurality of
individual parts, do not satisfy, however, since by such
arrangement other drawbacks, as sight obstructions by smoke
formation occur. In the combined devices, composed of a plurality
of individual parts, show, in addition, after a comparatively short
time of operation, a contamination of the powder gases, which
brings about, on the one hand, a reduction of the effect of the
muzzle-brake and, on the other hand, renders more difficult the
disassembly of the device and even makes the latter in many
instances unusable.
For the prevention of the gas pressure effect disturbing to the
gunners, in a known recoil retarder equipped with lateral gas exit
slots and designed for a manually operated weapon, openings
provided behind the slots and obliquely disposed forwardly are
arranged in the wall of the recoil retarder. By this arrangement
the viewing conditions of the gunners is worsened by the gases
concentratingly occurring in the muzzle range.
It has been recognized, that in the known combined devices a mutual
influence of the muzzle-brake onto the flash hider and vice versa
occurs, whereby the influence could not be foreseen as to its
extent.
It is one object of the present invention, to provide a
muzzle-brake with a flash hider for automatic weapons and guns,
which shows with an optimum effect even in case of a longer use no
disturbing side effects, which in addition has a simple structure,
in order to prevent soiling to a great extent and to make possible,
respectively, an easy cleaning.
It is another object of the present invention, to provide a
muzzle-brake with a flash hider for automatic weapons and guns,
wherein the device, consisting of an integral structural part, has
a forward first section forming the flash hider, which in known
manner comprises a forwardly widening conical sleeve, as well as a
second section forming the muzzle-brake, following the first
section, and having a rearwardly increasing outer diameter and
cylindrical bore, the wall of which has a plurality of rows of
radial bores distributed over the periphery, while the wall of the
forward section, forming the flash hider has axial slots widening
in axial and radial direction and passing through the wall.
It has been found, that such basic type of structure, is applicable
in weapons of a smaller caliber, as well as in cannons and guns,
thus also in weapons of a larger caliber with advantage and that
the obtainable effects in relation with the muzzle-brake and with
the flash hider are constant in weapons of different calibers, if
the sections forming the flash hider and the muzzle-brake stand in
a predetermined ratio relative to each other as to their dimensions
and in particular are about of equal length. Particularly
advantageous and constant results have been obtained, if the outer
wall of the second section forming the muzzle-brake is rearwardly
enlarged at an angle of about 3.degree.-5.degree. relative to the
longitudinal axis and the radial bores are disposed perpendicularly
to the outer wall.
Furthermore, it has been found that in relation to the obtainable
effect, the size and the number and, thereby, the cross-section of
the bores provided in the wall of the muzzle-brake are in a
particular relation to the caliber of the weapon. As advantageous
it has been found, when the total cross-section of these bores
corresponds to about 60-times of the caliber and the cross-section
of one bore corresponds about to the caliber of the weapon. In
other words, about 60 bores, the measurements of which are at a
predetermined ratio to the caliber of the weapon, are distributed
over the periphery of the muzzle-brake.
As experiments performed with the subject matter of the present
invention indicate, not only optimum effects have been obtained in
relation to the muzzle-brake and the flash hider, rather, in
addition, an appreciable reduction of the detonation pressure
effect on the gunners is experienced.
An advantageous advancement of the present invention for the use of
weapons with a movable barrel, by example, in machine guns, resides
in the fact that the device has a third section following the
muzzle-brake with a recoil amplifier as a retaining chamber.
With these and other objects in view, which will become apparent in
the following detailed description, the present invention will be
clearly understood, in connection with the accompanying drawings,
in which:
FIG. 1 is an axial section of a muzzle-brake with a flash hider;
and
FIG. 2 is an axial section of the same device with a recoil
amplifier for weapons having a movable barrel.
Referring now to the drawings, and in particular to FIG. 1, a
muzzle-brake 2 is combined with a flash hider 1 and comprises an
integral structure member, which has at its rear end an extension 3
with an inner thread 4 for screwing thereto the weapon barrel and
the gun barrel, respectively. The forward section A forming the
flash hider 1 comprises a forwardly widening conical sleeve, in the
wall of which axial slots 5 are provided which are widened in axial
and radial direction. The second section B, form in the
muzzle-brake, is of about equal length as the first section and has
a cylindrical shell passage bore 6. The outer diameter of the
muzzle-brake increases in rearward direction at an angle of about
3.degree.-5.degree.. In the wall of the muzzle-brake are
distributed five rows of 12 bores 7 each over the periphery and in
particular perpendicularly towards the outer wall. Due to the fact,
that the outer diameter of the muzzle-brake is reduced in forward
direction and the radial bores 7 are disposed perpendicularly to
the outer wall, the exit edges of the bores are disposed on their
backside always on a larger diameter than on the front side,
whereby a gas stream declination in the direction of shooting takes
place. The cross-section of each bore 7 corresponds about with the
caliber.
Referring now, again, to the drawing and in particular to FIG. 2,
the device disclosed in this Figure is designed for an automatic
weapon with a movable barrel relative to the weapon housing, as it
is the case in many machine guns. The opening of the breech block
is operated in connection with these weapons by the breech block is
operated in connection with these weapons by the barrel recoiled by
the gas pressure. These weapons require thus a gas capture chamber
as a recoil amplifier, which gas capture chamber is disposed in
front of the muzzle. The shown device 8 which is designed in its
front sections A and B in the same manner as described in
connection with FIG. 1, has a rearward section C with a forwardly
reducing gas collecting chamber 9. The device is screwed on the
weapon housing indicated in the drawing in point-dotted lines and
surrounding the barrel, in which weapon housing 10 the barrel
equipped with a guide sleeve 11, shown likewise in point-dotted
lines, is displaceably guided.
While I have disclosed several embodiments of the present
invention, it is to be understood that these embodiments are given
by example only and not in a limiting sense.
* * * * *