An Improved Rope Fastener and Tightening Appliance for Ropes Transmitting Power.
Year: 1898

page_text: Date of Application, 28th July, 1898
Complete Specification Left, 4th Apr., 1899-Accepted, 6th May, 1899
An Improved Rope Fastener and Tightening Appliance for Ropes
Transmitting Power.
I, GEORGE ROWBOTTOM, of Hole House Mills, Charlesworth, near Manchester,
in the County of Derby, Rope Maker, do hereby declare the nature of this inven-
tion to be as follows:-
This invention consists of a metallic appliance in the form of a shackle one
half of which can be attached to each end of a rope used for transmitting power,
by which the rope can be easily coupled up and regulated to any convenient
tension.
Each half of the shackle is made with an eye or loop through which the strands
of the rope are passed and secured in any suitable manner.
One half of the shackle is provided at the meeting end with a central pin or
stud, and the other half is made with a projecting socket of such a diameter inter-
nally as to allow a circular nut to be screwed onto the end of the said pin or stud.
This circular nut forms one half of a toothed clutch. The outside of the pro-
jecting socket above named is chased with a left hand screw thread.
A lox nut (also with a left hand screw thread) is screwed on to this socket the
hole in the outer end of this box nut being fitted to the central pin or stud on the
other half of the shackle. Inside the box nut is dropped the second half of the
toothed clutch being also fitted loose on the pin but prevented from turning by
two pins.
When the two halves of the shackle are connected together by the box nut the
tendency of the rope to untwist will keep the box nut tight and the tension of the
rope will keep the two faces of the toothed clutch in gear; but should the rope
become too slack the half shackle provided with the central pin must be turned
round so as to twist the rope tighter which will cause it to become shorter and so
take up the slack.
COMPLETE SPECIFICATION.
An Improved Rope Fastener and Tightening Appliance for Ropes
Transmitting Power.
I, GEORGE ROWBOTTOM, of Hole House Mills, Charlesworth, near Manchester,
in the County of Derby, Rope Maker, do hereby declare the nature of this inven-
[Price Bd.]

page_text: tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement;―
This invention consists of a metallic appliance in the form of a shackle one
half of which can be attached to each end of a rope used for transmitting power,
by which the rope can be easily coupled up and regulated to any convenient
tension.
The manner in which my said invention is to be performed or carried into
practical effect will be readily understood on reference to the annexed sheet of
drawings and the following explanation thereof.
Fig. 1 on the drawings represents in clevation the different parts of the shackle
detached, the "box-nut" only being shewn in section; and Fig. 2 is a sectional
view of the complete shackle.
Figs. 3 and 4 are similar views of a modification thereof. Each half of the
shackle in both cases is made with an eye or loop a and a through which the
strands of the rope are to be passed and secured in any suitable manner.
Referring to Figs. 1 and 2 one half a of the shackle is provided at the meeting
end with a central pin or stud b, and the other half al is made with a projecting
socket c of such a diameter internally as to admit a circular uut d to be screwed
onto the end of the said pin or stud b. This circular nut forms one half of a
toothed clutch.,
The outside of the projecting socket c on the half a¹ of the shackle is chased
with a left-hand screw-thread. A box-nute (also with a left-hand screw thread)
is screwed onto this socket c, the hole e in the outer end of this box-nut e being
fitted to the central pin or stud,b on the other half a of the shackle. Inside the
box-nute is dropped the second half f of the toothed clutch, being also loose on
the pin 6 but prevented from turning by two pins or studs g taking into holes or
recesses in the interior of the box-nut e
When the two halves a and a¹ of the shackle are connected together by the box-
nute (as shown at Fig. 2) the tendency of the rope to untwist will keep the box-
nute tight, and the tension of the rope will keep the two faces of the toothed
clutch d, f, in gear; but should the rope become too slack the half shackle a pro-
vided with the central pin & must be turned round so as to twist the rope tighter
which will cause it to become shorter and so take up the "slack."
The modification of my invention represented by Figs. 3 and 4 of the drawings
is constructed on precisely the same principle, and the corresponding parts are
marked with the same letters of reference. In the first place the pin 6 instead of
being cast of one piece with the half shackle a is made of stee! and screwed into
it, which not only makes it stronger but also enables the half d of the toothed
clutch box to be formed of the head of the pin. The socket of the half a¹ of the
shackle is chased with a left hand screw thread on the inside, and the box nut e
is chased with a similar screw thread on the outside which enables the half f
of the toothed clutch box to be made on the face of the nut, thus simplifying
the manufacture and making the shackle stronger.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
The improved rope fastener and tightening appliance for ropes used for trans-
mitting power constructed and applied substantially as hereinbefore described and
illustrated by the drawings annexed.
D
1
T
-1 1000