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Патент USA US2411909

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Dec. 3, 1946,
R. TEMPLE
2,411,909
CABLE CUTTER
Filed Feb. '11. 1944
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WITNESSES:
INVENTOR
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ATTORNEYS.
Patented Dec. 3, 1946
2,411,909
CABLE CUTTER
Robert Temple, Swissvale', Pa., assignor to Tem
ple Velocity Equipment, Inc., Wilmington, Del.,
a corporation of Delaware
v
Application February'll, 1944, Serial No. 522,022 A
3 Claims.
(01. 42-395)
'
I
‘
1
This invention relates to explosively actuated
tools for cutting cables and the like, and more
element to swing the trigger back until the ele
particularly to such tools which are ?red by man
ually operable means.
ment slips over the end of the trigger and. there
by releases it. The chamber block may be in
the form of a block which is held in each of its
When invasion boats attempt to land at foreign
beaches, they sometimes are stopped by nets, ca
bles, rods, and the like placed in the water off
connected to the frame.
different positions by manually releasable means
' "
' The preferred embodiment‘of the invention is
shore by the enemy. Of course, these obstruc
tions 'have to be removed before the boats can
proceed, but it is a long and di?icult task to cut
the submerged nets and cables with ordinary cut
ting tools. There also are many other places
where it would be desirable to have available an
illustrated in the accompanying drawing in
vide a cable cutting tool which is explosively ac
tuated, which can be operated under water by a
section taken on the line V-V of Fig. 2.
which Fig. 1 is a side view of my cable cutter
with the frame and chamber block shown in sec
tion; Fig, 2 is another side view of the cutter
turned 90° from Fig. 1 and showing the ?ring
mechanism in section; Fig. 3 is a front end View
easily manipulated and operated cable cutting
of the cutter; Fig. 4 is a transverse section taken
tool.
15 on the line IV-.-IV of Fig. 2 with the cartridges
It is among the objects of this invention to pro
removed; and Fig. 5 is an enlarged transverse
Referring to the drawing, anintegral block;
man in a boat, which can be ?red more than once
like metal frame I _is provided in one side near
without reloading, and which is easy to handle 20 its front end with an inwardly extending recess
and operate.
2 adapted to receive and hook onto a cable. Be
These and other objects are attained by con
hind this recess and spaced therefrom the frame '
necting a frame to one end of a long handle and
is provided with-a rectangular slot 3 that extends
providing one side of the frame with a recess for
entirely through the frame from its recessed
receiving a cable, rod, or the like, all of which 25 side. Fitting snugly but slidably in this slot is a
will be referred to herein as cables. A chamber
block-like chamber block 4 provided with a pair
block is mounted in the frame behind its cable¢
receiving recess and is provided with a plurality
of forwardly opening chambers.
The chamber
block is movable transversely of the frame to a
plurality of different predetermined positions in
each of which one of its chambers opens into the
back of the recess. Each of these chambers con
tains a projectile-like cable cutting member slid
ably mounted therein. The chamber block is also
provided behind each chamber with a bore for re
ceiving an explosive charge, suchas a blank car
tridge.
The frame is connected to‘the handle
of forwardly opening elongated chambers 6‘ and
l. The frame has a barrel 8 connecting the back
of the recess with the front of one of the chamber
block chambers with which the recess‘ is axially
aligned when the ‘chamber block is correctly po-'
sitioned behind it. The barrel has substantially '
the same diameter as the chambers. The por
tion of the frame in front of recess 2 is provided
with a bore in axial alignment with passage 8
and containing a cutting block Ill that is backed
up by a nut II screwed into the front end of the
’ bore. The cutting block is provided with a cen
through a ?ring mechanism that include's'a ?r
tral passage ,I2 concentric with the frame bore
ing pin behind which there is a spring. A trig 40 and of substantially the same diameter as barrel
ger, ‘which extendsacross the ?ring pin to which
8 at the other side ofthe recess.
it is operably connected is pivotally supported at
Slidably mounted in each chamber block
one end beside the pin. Manually operable means
chamber is a projectile-like cable cutting mem
is provided for swinging the opposite ~end 0f the
ber l6 provided in its front end with a transverse _
trigger rearwardly to retract the ?ring pin which,
upon release of the trigger, is'driven forward by
the spring to explode the cartridge. The force of
vthe explosion drives the cutting member across
the recess and thereby severs any cable‘ held
therein. Preferably, the trigger-actuating means
consists of a slidably mounted element normally
groove in which a shear pin I‘! is disposed. The
shear pins project beyond the cutting members
and into a counterbore I8 in the front of the
chamber block. The front wall of slot 3 helps to
hold the shear' pins in place. In order to expel
50 the cutting members from the chamber block the
latter is provided behind each of its chambers disposed in front of the free~ end of the trigger,
with a bore 20 in which an explosive cartridge 2| .
and a line attached to this element and extend
is inserted. When the chamber block is in the
ing out to the outer end of the handle. When
position shown in ‘Fig. 2 the cartridge behind
this line is pulled it causes the trigger-actuating 55 chamber 6 is directly in front of a ?ring pin 22
2,411,909
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it.
slidably mounted in an axial passage 23 in an
elongated breech member 24 that is screwed into
¢
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4
,
Spring 28 permits the ?ring pin to move
forward far enough for element 36 to slip across
the trigger, and then the spring retracts the pin
The point of the pin projects into a short bore
'just enough to cause the trigger to engage the
that connects passage 23 with frame slot 3.
back side of the element. The tool is made ready
The ?ring pin has an enlarged central portion
for ?ring again by moving the chamber block in
between the front end of which and theframe
frame slot 3 until chamber ‘I containing the other
there is a light coil spring 26 that normally keeps
cutting member registers with frame barrel 8
the point of the pin spaced at short distance from
directly behind _'the cable-receiving recess. The
the chamber block. At the opposite end of the 10 ?ring mechanism can then be actuated again in
?ring pin there is a heavier coil spring 21 which
the same way as before to ?re the second cutting
a threaded socket in the rear end‘ of the frame.
normally does not exert any pressure against the
pin. As shown in Figs. 2 and 5, the central por- -
member across the recess and out of the frame.
It is then necessary to reload the chamber block
tion of the pin has a transverse slot 28 through
before the tool can be used again.
7
it which may have an open side, and the breech 15
To hold the chamber block in the frame and
member is provided with a pair of longitudinally
yet permit it to be moved to its different ?ring and
extending slots 36 and 3i that register with the
reloading positions, one side of the chamber block
opposite ends of the pin slot. Loosely disposed in
is provided with three small depressions orsock
the pin slot is a trigger 32 which projects into the
ets 46, 46, and 41 arranged in a straight line ex
breech member slots. One end of this trigger is 20 tending in the direction of movement of the
pivotally mounted in slot 3i on a pin 33 extend
chamber block. Beside this line of sockets the
ing through the breech member. When the ?ring
frame is provided with a central transverse open
pin is in normal position the trigger leans toward
ing the inner portion of which is larger-‘than the
outer portion. Slidably mounted in the enlarged
the from; of the tool, as shown in Fig. 2, and the
pin may be releasably locked in‘ this position by 25 portion of this opening is a spring-pressed plug
438 having a stem extending out of the opening
' means of a removable safety key 34 extending
through transverse openings in the breech mem
and provided with a knob 49 outside of the frame. .
This plug is adapted to project into whichever
ber and the ?ring pin. .
socket happens to be located beside it at the time.
The free end of the trigger projects a slight
distance from slot 39, and its front surface is 30 and to thereby releasably lock the chamber block
in that position. The sockets are so positioned
engaged by an actuating element 36 in the form
that when the plug is in center socket 46 the
of a small block which is slidable along a ?attened
chamber block chamber 3 registers with frame
area on the breech member. As shown in Fig. 5,
barrel 8, and the other chamber block chamber is
this element has lateral projections which extend
located far enough inside the frame to prevent the
into guiding grooves‘in the breech member to
cutting member and adjoining cartridge from
hold the element in place. (The element is in
serted in these grooves from’ their rear ends, and
then is prevented from escaping from them by
means of a screw'3‘i attached to the breech mem
ber. Attached to the trigger-actuating element is
a ?exible line 38, such as a wire or cord, which
extends rearwardly along. a pole-like handle 39
the front end of which is rigidly mounted in
a socket in the back end of the breech member.
The outer end of line 38 can be slidably at
tached to the handle by a screw eye Ml through
which the line extends. A pull ring 4| is fastened
to the end of the line.
.
_
When the chamber block is loaded and in the
, pulled,
positionthe
shown
trigger-actuating
in the drawing,element
if the pull
36 will
ring be
is
drawn back along the breech member and will
thereby swing the adjoining end of the trigger
away from the frame. This movement of the
trigger draws the ?ring pin back in breech mem
ber passage 23 against the r :sistance of rear
spring 21. After the actuating element has moved
a predetermined distance it slides across the ad
joining end of the trigger and thereby releases it.
Immediately the compressed rear spring drives
the ?ring pin ahead and causes it to strike and
detonate the cartridge 2| in front of it. The
force of the explosion builds up behind the cut
ting member in front of it until it‘ is sufficient to
cause the cutting member to shear off the adjoin
falling out. After the ?rst cutting member has
been shot from the frame, plug 48 is pulled out
'far enough to permit the chamber block to be
-moved in frame slot 3 until the plug seats in rear
socket 41. Chamber ‘I is then behind the cable
receiving recess while empty chamber 6' is out
side of the frame where it can be reloaded after
the second cutting member has been discharged
43 from the chamber block. To reload chamber ‘I
the chamber block is moved back through the
frame until plug 48 projects into socket 45. In
I this position chamber 1 is disposed outside of the
frame where it too can be reloaded.
Of course. ,
the cartridges are replaced at the same time.
To prevent the chamber block from accidentally
sliding out of the frame, the side of the chamber
block opposite the positioning sockets is provided
with a groove 5| extending lengthwise of slot 3
and slidably receiving the reduced inner end of a
stop screw 52 that is mounted in the side of the
frame; all as shown in Fig. 4. The overall move
ment of the chamber block is thus limited by en
gagement of the opposite end walls of this groove
.60 with the stop screw.
It will be seen’ that a man standing in the front '
of an invasion barge, for example, can hold this
tool with its cutting end several feet under water.
When he hooks the frame onto a. submerged cable
— he can readily sever the cable by merely pulling
ing shear pin l1, whereupon the cutting member
on ring 4|. Then, without taking time to reload
shoots forward out of the chamber block, across
the tool, the chamber block can be quickly shifted
- and another cable cut. This greatly increases the
the cable-receiving recess 2, and out through the
A section of the
cable caught in recess 2 at the time is cut from
rate at which such cables can be cut, and it all is
done without any substantial effort on the part of
the cable by the cutting member and driven by
the operator and’ without his getting into the wa
ter. Of course, this tool can also be used effective
ly out of water for cutting rods and cables. In
" passage I2 in cutting block iii.
it out through the front end of the frame. ~
The trigger-actuating element is then moved
forward by hand until it slips across the end of
emergencies it can even be used as a gun because
the trigger and is once more disposed in front of 75 the cutting elements make effective projectiles
aeiaeca
opening chambers, a cable cutting member slid
that can be ?red a considerable distance when
ably mounted in each of said chambers, means
for selectively holding the chamber block in posi
there is nothing in the cutting recess.
In the following claims this tool has been re
ferred to as a cable cutting tool to simplify the
tions numbering one more than the number of
terminology, but it is to be understood that the C1 said chambers, one of said chambers being lo
word “cable" is to be construed broadly to include
rods, pipes, and any other objects that can ‘be
received and severed in the cutting recess,
According to the provisions of the patent
statutes, I have explained the principle and con
struction of my invention and have illustrated
and described what I now consider to represent
its best embodiment. However, I desire to have
it understood that, within the scope of the ap
pended claims, the invention may be practiced
otherwise than as speci?cally illustrated and de
scribed.
,
I claim:
1. In a cable cutter, a frame provided with a
cated outside of one side of the frame for load
ing when the block is in one of its end positions,
the chamber at the opposite end of the block be
ing located outside of the opposite side of the
frame for loading when the block is in a position
in which the first-mentioned chamber is in align
ment with said barrel, the second-mentioned
chamber being ln'allgni'nent with said barrel when
the block is in a predetermined intermediate po
sition, said block being provided _ behind each
chamber with a cartridge-receiving opening, and
manually operable means for ?ring the cartridge
behind said opening, whereby to drive the adj oin
ing cutting member into the barrel.
3. In a cable cutter, a frame provided with a
barrel and also provided with a slot extending 20
barrel and also provided with a slot extending
transversely through it at the rear end of the bar
transversely through it at the rear end of the
rel, a chamber block 'slidably mounted in said slot
barrel, a chamber block slidably mounted in said
and provided with a pair of forwardly opening
slot
and provided with a pair of forwardly open
chambers, a cable cutting member slidably mount
ed in each of said chambers, means for selectively 25 ing chambers, a cable cutting member slidably
mounted in each of said chambers, the side of the
holding the chamber-block in three positions, one of
block being provided with three laterally spaced
said chambers being located outside of the frame
sockets, a spring-pressed member attached to the
for reloading when the chamber block is in one
frame and normally projecting into one of said
of its end positions, the other chamber being in
alignment with said opening when the chamber 30 sockets for temporarily locking the breech block
in any one of three positions, one of said cham
block is in its center position, said other chamber
bers
being located outside of the frame for re-»
being located outside of the frame for reloading
loading when the'chamber block is in one of its
when the chamber block is in its third .position
end positions, the other chamber being in align
with the first-mentioned chamber in alignment
ment
with said barrel when the chamber block is
with said barrel, said chamber block being pro
in its center position, said other chamber being
vided behind each chamber with a cartridge-re
located outside of the frame for reloading when
ceiving opening, and manually operable means for
the ‘chamber block is in its third position with
?ring the cartridge behind said barrel, whereby
the ?rst-mentioned chamber in alignment with
to drive the adjoining cutting member into the
40 said» barrel, said chamber block being provided
barrel.
behind each chamber with a cartridge-receiving
2. In a cable cutter, a frame provided with a
opening, and manually operable means for ?ring
barrel and also provided with a slot extending
the cartridge behind said barrel, whereby to drive
transversely through it at the rear end of the
the adjoining cutting member into the barrel.
barrel, a chamber block slidably mounted in said
H
RQBEBTETEMPLR
slot and provided with a plurality of forwardly
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