Improvements in Caplins for Wire Ropes.
Year: 1899

page_text: Improvements in Caplins for Wire Ropes.
I. GEORGE CORBETT, of Hawthorne Buildings, Essington, near Wolverhampton,
in the County of Stafford, Engineer, do hereby declare the nature of this inven-
tion to be as follows:-
If a wire rope is exposed to a sudden and severe strain, the portion thereof
which is enclosed in the caplin is liable to injury, but any injury caused
A
thereby cannot be detected without removing the caplin from the rope.
caplin of one or other of the two types heretofore or usually employed cannot
(at any rate in the case of a colliery winding rope) be disconnected from the
rope and re-connected therewith in less than two or three hours, as in the
case of one of the types its outer end requires to be heated to allow of the
opposite sides of the shank which encloses the rope being opened outwards and
closed up again, and in the case of the other type the rope must be cut through
beyond the caplin, the portion within the caplin he then removed, and the cut
end of the rope be passed through the caplin and the wires thereof manipulated
to properly thicken the end for holding within the caplin.
Now, this invention has for its object to construct a caplin for a wire rope
in such manner that it may be disconnected from and reconnected with a
rope much more conveniently and expeditiously than is the case with a caplin
of either of the types heretofore or usually employed.
A caplin constructed according to this invention has the main portion, which
has heretofore or usually been made in a single piece of metal, formed in two
separate parts divided from one another lengthways of the caplin. and the
edges of the portions of the caplin which are intended between them to surround
the rope are fitted together by means of lugs or projections on two of such
edges which engage with notches or recesses of the opposite edges. The two
parts are securely clamped together around the rope by means of rings as
in the usual manner of clamping what is known as an open" caplin around
a rope. The outer ends of the divided parts of the caplin are formed each
with a jaw or ear, or in any convenient manner, for connection with any part
to or through which the pull of the rope is to be transmitted. and except
for the means by which the divided parts are fitted together the portion of
the caplin which surrounds the rope corresponds in shape to the corresponding
portion of an ordinary open caplin.
"
The rings securely prevent the divided portions of the caplin from moving
outwards from one another, and the interlocking of the lugs or projections with
the notches or recesses securely prevents one of the parts moving endways in
relation to the other, and thus the caplin when nut together around the rope
is quite securely fastened thereto. To remove the caplin for the purpose of
examining a rope end, it is necessary simply to knock the rings from off the
caplin, when the divided portions thereof may be moved apart clear of the rope.
There is no need, therefore, either to bend any portion of the caplin for the
purpose, or to cut the rope: and if, when the rope is exposed, it is not found

page_text: to require repair the whole operation of removing the caplin and replacing it
can be performed in a few minutes.
STEPHEN WATKINS & GROVES,
Wolverhampton, Agents for the Applicant.
Improvements in Caplins for Wire Ropes.
I, GEORGE CORBETT, of Hawthorne Buildings, Essington, near Wolverhampton,
in the County of Stafford, Engineer, do hereby declare the nature of this inven
tion and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
A
If a wire rope is subjected to a sudden and severe strain, the portion thereof
which is enclosed in the caplin is liable to injury, but any injury caused
thereby cannot be detected without removing the caplin from the rope.
caplin of one or other of the two types heretofore or usually employed cannot
(at any rate in the case of a colliery winding rope) be disconnected from the
rope and re-connected therewith in less than two or three hours, as in the
case of one of the types its outer end requires to be heated to allow of the
opposite sides of the shank which encloses the rope being opened outwards and
closed up again, and in the case of the other type the rope must be cut through
beyond the caplin, the portion within the caplin be then removed and the cut
end of the rope be passed through the caplin and the wires thereof manipulated
to properly thicken the end for holding within the caplin.
Now, this invention has for its object to construct a caplin for a wire rope
in such manner that it may be disconnected from and reconnected with a
rope much more conveniently and expeditiously than is the ease with a caplin
of either of the types heretofore or usually employed.
A caplin constructed according to this invention has the main portion, which
has heretofore or usually been made in a single piece of metal, formed in two
separate parts divided from one another lengthways of the caplin, and the
edges of the portions of the caplin which are intended between them to surround
the rope are fitted together by means of lugs or projections on two of such
edges which engage with notches or recesses of the opposite edges. The two
parts are securely clamped together around the rope by means of rings, as
in the usual manner of clamping what is known as an open caplin around
a rope. The outer ends of the divided parts of the caplin are formed each
with a jaw or ear, or in any convenient manner, for connection with any part
to or through which the pull of the rope is to be transmitted, and, except
for the means by which the divided parts are fitted together the portion of
the caplin which surrounds the rope corresponds in shape to the corresponding
portion of an ordinary open caplin.
39
In order that the invention may be clearly understood, I will now proceed
to describe a practical application of the same with reference to the accom-
panying drawings, of which, Figure 1 is an elevation shewing the caplin attached
to an end of a rope, and Figure 2 an elevation shewing the two main portions
of the caplin separated from one another.
The caplin is divided longitudinally into two portions & A' which when brought
together around the thickened end of a rope B completely enclose such end. The
portions of the caplin are clamped together by rings C such as are used

page_text: with an ordinary open caplin. Of each pair of edges of the parts A', which
meet one another when the parts are brought together, one of the edges is
formed with projections a which engage with corresponding notches or recesses b
in the opposite edge. The portions and are each formed with an ear c
by means of which the caplin may conveniently be connected, through the
medium of the pin d, to any part to or through which the pull of the rope is
to be transmitted.
The rings securely prevent the longitudinally divided portions of the caplin from
moving outwards from one another, and the interlocking of the lugs or projections
with the notches or recesses securely prevents either of the parts moving endways in
relation to the other. and thus the caplin when put together around the rope
is quite securely fastened thereto.
To remove the caplin for the purpose of examining a rope end, it is simply
necessary to knock the rings from off the caplin, when the longitudinally divided
portions thereof may be moved apart clear of the rope. There is no need there-
fore, either to bend any portion of the metal of the caplin, or to cut the rope,
for the purpose, and if, when the rope is exposed, it is not found to require
repair, the whole operation of removing the caplin and replacing it can be
performed in a few minutes.
Although it is much preferred to interlock the longitudinally divided portions
of the caplin by means of the projections and notches in the manner described,
such projections and notches may be dispensed with, and the longitudinally
divided portions of the caplin be securely locked together, and thereby prevented
from moving the one in relation to the other, in any convenient manner, such
as by clips fitted within grooves formed around such portions and securely
tightened up.
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
-
1. A caplin, for a wire rope, which comprises longitudinally divided portions
which, when unclamped, may be readily opened out from one another to clear
the caplin from the rope, without bending any portion of the metal of the
caplin, in combination with means by which such divided portions may be
securely locked together around the rope, substantially as described.
2. A caplin, for a wire rope, comprising longitudinally divided portions which
may be readily separated from one another, said portions having lugs or pro-
jections on two of their meeting edges which engage with notches or recesses
in the opposite of such edges, in combination with means by which such portions
of the caplin are securely fastened together, substantially as described.
Dated this 10th day of January 1900.
STEPHEN WATKINS & GROVES,
Wolverhampton, Agents for the Applicant.