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. 2% E946'.
L. LANGNER
2,409,35 `
MINE DESTROYER
Filed Aug. 26, 1943
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2,409,635
Patented Oct. 202, >i946;
'nutren sTArss PAENT orties
MINE- DESTROYER
Lawrence Langner, New York, Nl Y., assignor t0
the Government of the United States of Amer'
ica, as represented by the Secretary of War' and '
his successors in office
Application August 2.6, 1943, Serial No. 500,061
3 Claims. (Cl. 89-1)
(Granted under the act of March 3, 1883, asv
amended April4 30, 1928; 370 O. G. 757)
1
The invention described herein may be manu
factured and used by or for' the Government' for
governmental purposes, without payment to me
of any royalty thereon.
This invention relates to a mine' destroyer and
more particularly it is directed to a device of this
character for destroying land mines.
One of the objects of the invention is to- pro
ing tamping element which may also be» used in
carrying out the invention.
' `
Referring more specifically to Fig. 1, theim
proved mine destroyer illustrated generally by A
is mounted on an armored vehicle B in the form
of a tank and comprises an oscillating lever or>
walking beam I pivotally connected or fulcrumed
intermediate its ends 2 and 3 by a bolt 4 to a pair
of brackets 5 which diverge outwardly and down
vide a mine destroyer adapted to be mounted on
wardly toward the front end of the armored' ve
an armored vehicle for destroying' mines buried
hicle B from their connection with the beam I
in the earth and adapted' to be exploded when
and having their lower ends mounted on the
tramped on or upon a vehicle passing overI the
armored vehicle by bolts 0.
same.
The walking beam I extends outwardly from
Another object of the invention is to provide
and
above the front end of the armored vehicle
l5
a mine destroyer including tamping elements
B and is ful'crumed at 4 to the upper ends of the,
adapted to be mounted on an armored vehicle
brackets 5 a shorter distance from its rear end
and actuated by the vehicle for causing the tamp
2 than from the front end 3 thereof, whereby a
ing elements to contact the ground for exploding
long arm portion l is provided on the front end of
mines buried therein.
the walking beam I and a short arm portion 8 is
Another object of the invention is to provide
provided on the rear end of the walking beam
a. mine destroyer adapted to be mounted on and
actuated by an armored vehicle and which is
for a purpose which will hereinafter appear.
The rear end 2 of the walking beam I is piv
simple in operation, constructed of few parts that
can readily be replaced upon being damaged,
otally connected by a bolt 9 to the upper end> of
a connecting rod I0 having a ring member or
strap II mounted on its lower end. The strap
which may be quickly mounted on and removed
from the armored vehicle and well adapted for
the purpose intended without subjecting the
I I surrounds an eccentric I2 mounted on one end
of a shaft IS rotatably supported on a bracket I4
>driver or crew of the armored vehicle to body
secured to the front end of the armored vehicle
injury or death upon destroying a mine.
B by bolts l5. A sprocket wheel I6 is- mounted on
30
Heretofore in destroying land mines buried in
the opposite end of the shaft I3 from the eccen
the ground by an enemy a crew of men had to go
tric I2 and is driven by a sprocket chain I'I, which
over the ground on foot to detect the presence
in turn is driven by another sprocket wheel I8
of the mines therein before the mines could be
mounted on one end of a shaft I 9 of a part of the
destroyed or made ineffective, thereby subjecting
mechanism for operating the armored' vehicle B.
the men to great danger of body injury or death. 35
A transversely extending supporting bar’ or rod
It is therefore the aim and purpose of this
20 is mounted on and extends outwardly an equal
invention to provide a -mine destroyer on an
distance from the outer end 3 of the oscillating
armored vehicle and adapted to be automatically
lever or walking beam I and carries a plurality
actuated by a mechanism of the armored vehicle
40 of connecting members 2I preferably in the form
for exploding land mines in a mine field over
of flexible wire strands or cables which hang
which troops or other vehicles are to pass, while
downwardly from the supporting bar 20 in suit
at the same time protecting the driver of the
able spaced relation and have mine explosion
tamping elements 22 suitably secured to their
vehicle from body injury,
With the above and other .objects and advan 45 lower or free ends 23, which mine explosion tamp
ing elements 22 preferablyV consist of a plurality
tages in view the invention consists of certain
of sets of chains 24 as illustrated in Fig. l, but
features of construction and operation of parts
each of the mine explosion tamping elements'22
which will hereinafter be described and shown
may comprise an expendable can or bag 25'filled
in thel accompanying drawing in which:
Fig, l is a perspective view of an armored 50 with any suitable material such as sand or water
and having metal soles 26 mounted on its lower
vehicle having the improved mine destroyer in
end as illustrated in Fig.V 2.
»
cluding one form of mine exploding tamping ele
In the operation of the improved mine de
ments mounted thereon; and
Fig. 2 is a vertical sectional detail View partly
' in elevation of a modified form of a mine explod
stroyer, as the armored vehicle B travels over a
55
field having land mines buried therein, thershaft
2,409,635
3
I9 forming a part of the mechanism for driving
the armored vehicle, drives the sprocket wheel
I8 which in turn operates the sprocket chain
I1 for driving the sprocket wheel I6. The
sprocket wheel I6 -being rotated drives shaft I3,
which in turn drives the eccentric I2 which ro~
tates in the Strap or ring member I I periodically
moving the strap II downwardly and upwardly
whereby the connecting rod I Il is periodically
4
vehicle and pivotally mounted adjacent one end
thereof to the upper ends of said bracket mem
bers, whereby a long arm portion is provided on
the front end of the walking beam and a short
arm portion is provided on the rear end thereof,
means for actuating said walking beam, said
means including a sprocket mechanism connected
to Ibe actuated by the vehicle motor, an eccentric
'- rotated by said sprocket mechanism, a ring
moved downwardly and upwardly to cause the 10 member actuated by said eccentric and a rod
inner end 2 of the Walking beam I to be peri
connected to be actuated by said ring member,
odically pulled downwardly and moved upwardly
one end of said rod secured to said ring mem
which oscillates the walking beam i on its pivot
ber and the other end thereof pivotally con
4, thus periodically moving its front end 3 up
nected to the rear end of said walking beam, a
wardly and downwardly, causing the Vmine ex 16 supporting bar mounted on and extending trans
plosion tamping elements 22 to be periodically
moved vertically downwardly to beat or strike
heavy blows on the earth covering the Yland
versely outwardly from the front end of said
walking beam and mine explosion elements con
nected to said bar, said actuating means being
mines to be destroyed, and also to move up
constructed and arranged so that upon the ac
wardly therefrom, one of which land mines M 20 tuation of the vehicle motor the walking beam is
being illustrated in Fig. l. By using the heavy
oscillated on its pivotal connection with said
chains 24 as mine explosion tamping elements,
bracket members for periodically actuating said
a greater mined area may be covered and in
explosion elements into contact with the ground
using» the i‘lexible connecting members ZI the
for exploding mines buried therein.
mine explosion tamping elements are permitted 25
2. In combination, an armored motor vehicle,
to spread over a wider iìeld and to disperse when
a pair of bracket members mounted on the front
an explosion of a mine takes place and the
end of said vehicle and extending outwardly and
elements are lifted by the force of the explosion.
upwardly from the front end of said vehicle and
The sprocket wheel I3 may be of various sizes
converging upwardly toward each other, a walk
to vary the speed of tamping relative to the 30 ing beam, said walking beam extending out
speed of the tank B. Preferably, the speed of
wardly from and above the front end of said
the vehicle and the tamping action will be such
vehicle and pivotally mounted adjacent one end
that every foot of ground will be tamped. A
thereof to the upper ends of said bracket mem
change speed device or" any well known kind
bers, whereby a long arm portion is provided on
(not shown) may be interposed in the drive be 35 the front end of the walking beam and a short
tween the walking beam and axle i8, or inde
arm portion is provided on the rear end there
` pendent drive means may be employed for the
walking beam.
of, means for actuating said walking beam, said
>
means including a sprocket mechanism connected
In providing a longer front end arm portion
to be actuated by the vehicle motor, an eccentric
'I on the walking beam I than the short rear 40 rotated by said sprocket mechanism, a ring mem
end arm portion 8 thereof, the front end 3 of
ber actuated by said eccentric and a rod con
the walking beam is caused to move downwardly
nected to be actuated by said ring member, one
and upwardly a greater vertical distance than
end of said rod secured to said ring member
the vertical distance traveled by the rear end
and the other end thereof pivotally connected to
2 of the walking beam, whereby the mine ex 45 the rear end of said walking beam, a supporting
plosion tamping elements 22 may be lowered vwith
bar mounted on and extending transversely out
a greater impact onto the ground to explodeV the
wardly from the front end of said walking beam
land mines buried therein. Upon explosion of
and sets of explosion tamping chains and cables
the mine, the tamping elements 22 are deilected
connecting said chains to said bar, said actuat
by the force of the explosion but are not broken 50 ing means being constructed and arranged so
thereby; and the supporting bar 20 and walking
that upon the actuation of the vehicle motor
beam are suñîciently far away from the mine to
the walking beam is oscillated on its pivotal con
avoid damage.
nection with said bracket members for peri
It will thus be seen that there is herein pro
odically actuating said explosion chains into
vided a novel and eiiicient form of mine de
Contact with the ground for exploding mines
stroyer which is well adapted for the purpose
indicated above. The mine destroying operation
takes place far ahead of the position of the tank
itself, making the operation relatively safe.
buried therein.
»
3. In combination, an armored motor vehicle,
a pair of bracket members mounted on the
front end of said vehicle and extending outward
Even though there has herein been shown and 60 ly and upwardly from the fro-nt end of said ve
«, described certain features of construction and
hicle and converging upwardly toward each
other, a walking beam, said walking beam ex
tending outwardly from and above the front end
of said vehicle and pivotally mounted adjacent
scope of the claims.
(i5 one end thereof to the upper ends oi‘ said bracket
Having thus described my invention, what I
members, whereby a long arm portion is pro
claim as new and wish to secure by Letters Patent
vided on the front end of the walking beam and
operation of parts, it is nevertheless to be under
stood that various changes may be made therein
if the changes do not depart from the spirit and
is:
'
„
a short arm portion is provided on the rear end
1. In combination, an armored motor vehicle,
thereof, means for actuating said Walking beam,
a pair 0f bracket members mounted on the front 70 said means including a sprocket mechanism con
end of said vehicle and extending outwardly
nected to be actuated by the vehicle motor, lan
and upwardly from the front end of said vehicle
eccentric rotated by said sprocket‘mechanism, a
and converging upwardly toward each other, a
ring member actuated by said eccentric and a
walking beam, said walking beam extending
rod connected to be actuated by said ring mem
outwardly from and above the front end of said 75 ber, one end of said rod secured to said ring
2,409,635
member and the other end thereof pivotally con
nected to the rear end of said walking beam, a
supporting bar mounted on and extending trans
versely outwardly from the front end of said
Walking beam and expendable weighted con
tainers including metal soies connected to said
bar, said actuating means being constructed and
-
6
arranged so that upon the actuation of the
vehicle motor the Walking beam is oscillated on
its pivotal connection with said bracket mem
bers for periodically actuating said expendable
weighted containers into contact With the ground
for exploding mines buried therein.
LAWRENCE LANGNER.
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