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Патент USA US3062514

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Nov. 6, 1962
2. PELLETIER
TIGHTENING DEVICE FOR CABLES, CHAINS AND THE
LIKE ELONGATED FLEXIBLE ELEMENTS
Filed Dec. 9, 1960
3,062,502
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r
nited States Patent Q
re
1
3,062,502
TIGHTENING DEVICE FOR CABLES, CHAINS AND
THE LIKE ELONGATED FLEXIBLE ELEMENTS
Zephirin Pelletier, 62 Prospect Ave., Apt. 7,
Kirkland Lake, Ontario, Canada
Filed Dec. 9, 1960, Ser. No. 75,015
8 Claims. (Cl. 254-51)
3,062,502‘
.
1C6
Patented Nov. 6, 1962
2
hole 12 in communication with part 7 for the passage of
the piston rods 5 and 6. The upper leg 10 is provided
with an elongated slot 13 aligned with hole 12 for the
free passage of the piston rod 6 through the central part
of slot 13 so as to leave a free space in the slot on each
side of rod 6.
The inner faces at the two ends of slot 13 are convex,
as indicated at 14.
The present invention relates to a tool or an attach
ment to be used in combination with a jack for tighten
The internal face of the upper leg 10 is inclined down
wardly as indicated at 15 in the direction of the lateral
ing or shortening the effective length of cables, chains,
opening 16 of hook 8. The free edge of upper leg 10
forms a downwardly projecting lip 17 of rounded cross
section.
An important object of the present invention resides in
The free spaces in slot 13 on each side of the piston
15
the provision of a tightening device which can effect a
rod 16 make su?icient space for the passage of cable C
considerable force for shortening the effective length of
which is curved such as to form an inverted U under
a cable, chain, or the like, and which is useful in aynum
engagement with extended piston rod 6, as shown in FIG
of applications, such as for example, in automobile body
URE 2. The upper end of piston rod 6 is preferably
work, where chains or cables are used for straightening
provided with a groove 18, as shown in section in FIG
bent or damaged elements.
- 20 URE 3 for retaining the cable on top of the piston rod 6.
Another important object of the present invention re
In practice, one end of the cable is attached to the
sides in the provision of a device of the character de
element on which a pulling force is to be exerted while
scribed which is in the form of an attachment to be se
the other end of the cable is anchored or-the two ends of
cured to a jack, and more particularly to a hydraulic jack
the cable are attached to two spaced points of the said
25
of conventional construction, such as those used in garages,
element. The intermediate portion of the cable is in
the combination of the attachment and jack forming an
serted through the lateral opening 16 and is made to
inexpensive and very effective tool for its intended ap
abut the bottom of hook 8 against connecting part 11 of
plications.
the hook. In this position, the cable is in register with
Yet another object of the present invention resides in
slot 13. It should be noted that the cable even when taut
the provision of a tool of the character described which 30 can be freely inserted into hook 8. The hydraulic jack A
can be applied to a cable to tighten the same without hav
is thereafter operated such that piston rod ‘6 moves out
ing access to the ends of the cable.
wardly of hole 12 and engages the cable in the zone of
The foregoing and other important objects of the pres
the latter in the center of slot 13, the cable is thus pushed
ent invention will become more apparent during the fol
85 through the slot 13 while sliding on convex faces 14 to
and other tension elements which are elongated and ?ex
ible.
lowing disclosure and by referring to the drawings, in
which:
FIGURE 1 is a perspective view of a ?rst embodiment
of the tightening device of the invention;
take a U-shape as shown in FIGURE 2. It is to be noted
that the cable will be effectively shortened an amount
equal to twice the length of the stroke of the piston rod 6.
By utilizing a hydraulic jack or jacks of other types it
FIGURE 2 is a cross section of the upper part of the 40 is clear that the tightening force exerted on the cable
embodiment of FIGURE 1;
FIGURE 3 is a section along line 3-3 of FIGURE 2;
and
FIGURE 4 is a perspective view of a second embodi
ment of the invention.
Referring now more particularly to the drawings in
which like reference characters indicate like elements
throughout, the tightening device of the present invention
can be very large. The tightening device of the present
invention can therefore be utilized in all applications
where it is required to tighten or shorten a cable, a chain,
or the like, and more particularly in connection with body
work automobile frame straightening and other similar
works.
The tubular element 7 is not essential and any other
means for securing the hook 8 to a hydraulic jack or other
types of jacks can be utilized provided the hook 8 is se
consists essentially in the combination of a jack of con
ventional construction such as the hydraulic jack generally 50 cured to ‘the body of the jack.
indicated at A, with a cable guiding and engaging mem
Another embodiment of the invention is illustrated in
ber B having the general shape of a hook for receiving
FIGURE 4, wherein hook 8’ is secured to the cylinder 12
and tightening a cable C or a chain or other elongated
of a hydraulic jack which receives hydraulic ?uid under
?exible tension element.
pressure by means of tube 21 connected to a hydraulic
The hydraulic jack A can be of any conventional con 55 pump 22 actuated by lever 23. The hook 8’ is devoid of
struction and those used in garages normally include a
any tubular element 7 and is directly secured to the end
cylinder 1 vertically mounted on a base 2 and having an
of cylinder 20 and the piston rod 24 of piston 25 of cylinu
externally threaded upper end 3. By actuating lever 4,
der 20 is adapted to pass through hole 12' and slot 13’
the telescopic piston rods 5 and 6 move outwardly of the
of the hook 8' in order to push the cable C’ in a manner
threaded end 3 of cylinder 4 to take a projecting position. 60 identical to the embodiment of FIGURES l, 2 and 3.
The cable guiding member B in accordance with the
While preferred embodiments in accordance with the
present invention consists of a tubular lower part 7
present invention have been illustrated and described, it
which is internally threaded for threading engagement
is understood that various modi?cations may be resorted
with threaded end 3 of cylinder 1 of the hydraulic jack
to without departing from the spirit and scope of the ap
A. Part 7 is integral with and supports a hook-like part 65 pended claims.
8 having a generally U-shaped cross section, the opening
What I claim is:
of which faces laterally with respect to the longitudinal
1. A tightening device for cables, chains, and similar
axis of the jack A. Hook 8 has a substantial width and
elongated ?exible elements, comprising, in combination,
its generatrix is a straight line.
a jack having a casing and a rod movable axially outward
The hook 8 consists of a lower leg 9 and of an upper 70 ly from one end of said casing, a guiding member having
leg 10 interconnected by curved connecting part 11. The
the cross-sectional shape of a hook having two spaced
lower leg 9 is integral with the tubular part 7 and has a
legs de?ning a lateral opening therebetween, one of said
8,062,502
3
4
legs being secured to said casing end and having a hole in
inwardly inclined towards the other leg in the direction of
register with said rod for its free passage, the other one
said lateral opening.
of said legs having an elongated slot having its center
portion in register with said rod for leaving a free space
on. eachv side of the rod when disposed within said slot,
each said space being su?icient for the passage of a cable
or other elongated ?exible similar element, whereby said
element can be inserted through said lateral opening be
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8. As an attachment for a jack having a casing and
an axially and outwardly movable piston rod protruding
from one end of said casing, said attachment consisting of
a one piece member having the cross-sectional shape of
a hook with two spaced legs de?ning a lateral opening
therebetween, one of said legs provided with means to
tween said two legs, engaged by said rod- and pushed
secure said member to said one end of said casing and
through said elongated slot to form a U-shaped loop.
10 having a hole adapted to register‘with said piston rod for
2. A cable tightening device as claimed‘ in claim 1,
its free passage, the other one of said legs having an elon
wherein the internal terminal edges of said elongated slot
gated slot having its center portion adapted to register
de?ne convex surfaces for facilitating sliding of the cable
with said rod for leaving a free passage on each side of
thereon.
the piston rod when disposed within said slot, each said
3. A cable tightening device as claimed- in claim 1, 15 space being just su?icient for the passage of a cable or
wherein the casing‘ of. said jack h-as external threads and
other elongated ?exible similar element, whereby said
said guiding member has internal threads in threaded en
element can be inserted through said lateral opening be
gagement with the threads of said casing.
tween said two legs, engaged by said piston rod and pushed
4. A cable tightening device as claimed in claim 2,
through said elongated slot to form a U-shaped loop.
wherein said casing has external threads at the end there 20
of from which said rod extends and said hole of said guid
References Cited in the ?le of this patent
ing member is inwardly threaded to. ‘be screwed onto said
casing.
UNITED STATES PATENTS
5. A tightening device as claimed in claim 1, wherein
1,957,367
Suydam _______________ __ May 1, 1934
said jack is a hydraulic jack, and said rod is the rod of 25
2,049,074
Mott ____-_____________ __ July 28, 1936
the piston of said jack.
2,341,278
Long __________________ __ Feb. 8, 1944
6. A tightening device as claimed in claim 1, wherein
the outer end of said rod is grooved to receive said cable.
7. A tightening device as claimed in claim 1, wherein
the internal face of the leg having said elongated slot is 30
2,344,052
Neale _______________ __ Mar. 14, 1944
2,382,266
2,955,639
Simonsen ____________ __ Aug. 14, 1945
Brown ____ a. _________ __ Oct. 11, 1961)
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