Ro
Year: 1888

page_text: I ROBERT DIXON of Team Villa Gateshead-on-Tyne in the County of Durham
Wire Rope Manufacturer do hereby declaro the nature of this invention to be as
follows:-
This invention relates to improvements in the manufacture of wire ropes from
round wires technically known as compound strand ropes or ropes in which the
strands are built up of a core and one or more series of shells or coverings of wires
and the strands and rope laid with the same direction of twist or in which the strands
are laid right and left as desired.
-
My present invention is designed to produce a wire rope which will bear a greater
tensile strain than other ropes of the same cross section stand a greater amount of
wear and tear and last longer than those in use at the present time.
In manufacturing wire ropes according to my present improvements I construct
the strand at one operation (though I do not limit myself thereto) by forming 4 or
any other suitable number of wires over a core and cover such shell with other
gauges of wire so proportioned that half will fill up the interstices of the spirals whilo
the other half will follow the crown of wires forming the inner shell or heart the
whole being spirally laid parallel to each other (i.e. in the same direction of lay and
having the same length of lay) so as to give an approximately cylindrical strand.
The strands prepared as above described are laid into a rope in the same direction
of twist as the strands have been spun or they may be right and left.
TONGUE & BIRKBECK,
34, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: Improvements in the Manufacture of Wire Ropes.
I, ROBERT DIXON, of Team Villa, Gateshead-on-Tyne, in the County of Durham,
Wire Rope Manufacturer, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascor-
tained in and by the following statement :-
This invention relates to improvements in the manufacture of, wire ropes from
round wires technically known as "compound strand ropes" or ropes in which the
strands are built up or constructed of a core and one or more series of shells or
coverings of wires coursing over one another-and. the strands and rope laid with the
same direction of twist or the strands may be right and left alternately as desired and
my said improvements consist in so constructing these ropes from strands the wires
whereof lie closer together and parallel with one another and the wires of any of
the outer coursings though of different gauges all strike the arc of the same circle.
I am thus enabled to make a rope of round wires having advantages tending to give
greater tensile strength than the usual compound stranded ropes of round wire of the
same cross section and which will stand a greater amount of wear and tear and last
longer than those in use at the present time.
In manufacturing wire ropes according to my present improvements I construct
the strand at one operation (though I do not limit myself thereto) by forming four or
any other suitable number of wires over a core and cover such shell with other
gauges of wire so proportioned that half of the wires will follow the interstices of
the spirals while the other half of a smaller gauge will follow the crowns of wires
forming the inner shell the whole being spirally laid parallel to each other (i.e..in the
same direction of lay and having the same length of lay) so as to give an approximately
cylindrical strand.
One or more shells or coverings of wires thus proportioned may be coursed over one
another as above to make each strand.
The strands prepared as above described are laid into a rope in the same direction
of twist as the strands have been spun or they may be laid alternately right and left
i.e some of the strands may be laid in the same direction and the others the reverse
direction of the lay of the rope.
And in order that my invention may be fully understood and readily carried into
practice I will proceed to describe the same with reference to the annexed sheet of
drawings.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a cross sectional view of a strand made in accordance with my improve-
ments.
Figure 2 is a longitudinal exterior view of same on a smaller scale with one
outside wire removed.
Figure 3 is a cross sectional view of a rope made up from such strands.
Figure 4 is a longitudinal exterior view of a compound stranded rope laid in the
same direction of twist as the strands and
Figure 5 is a similar view of a compound stranded rope in which the compound
strands are laid alternately to the right and left.

page_text: a, is the coro over which are laid four wires b, 61, 62, 63, as shown in Figure 1 for the
sake of example (but any other suitable number may be used as desired) and over
these wires b, 61, 62, 63, are laid the wires c, c¹, c², c³, and d, d, d², d³, of different
gaugos and so proportioned that the crown of each and all of these wires c, c¹, c², c³,
and d, d, d², d³, touch the arc of the same circle c, as shown.
The number of wires of this outer covering or series of wires is always double
that of the next inner shell therefore in the example shown it will be eight viz. four
larger wires c, c¹, c², c³, and four of smaller gauge, d, d², d², d³.
The four larger gauge wires c, c¹, c², c³, lic in the interstices of the wires b, b¹, b², b³,
respectively, that is to say the particular wire c will lie in the interstice of the
particular wires 6 and 6' and also between the smaller gauge wires d and d' through-
out the length of the strand with which wires and all the others of the strand it lies
spirally parallel from end to end thereof and so on with regard to the other larger
gauge wires c¹, c², c³, which lie in their respective interstices in the same way.
The smaller gauge wires d, d², d², d³, lie on the crown of the wires b, 61, 62, 63,
respectively throughout, that is the particular wire d lies between the wires c and c
on the crown of the wire band on that wire only from end to end of the strand
and so on with the wires d' d² and d³.
Another covering or coverings of wires of different gauges proportioned as the
last described covering c, c¹, c², c³, d, d³, d², d³, may be added thereto if desired and
three or more strands so constructed are laid or formed into a rope in the same
direction of twist as the strands have been spun or they may be right and left
alternately.
In Figure 2 one wire has been removed from the outermost shell and shows a wire
(darkened) of the next inner shell and thus shows how each wire lies spirally parallel
with the others.
One great advantage obtained by constructing my improved compound strands (of
round wires) for wire ropes as hereinbefore described is that the wires being parallel
do not cross and thereby cut into one another.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I would remark that I am
aware that wire ropes have previously been made in which the strands of other con-
struction than mine have been laid into the rope in the same direction as the wires
are laid into the strands and also laid up alternately right and left handed and to
which methods of laying wire ropes I make no claim whatever separately but I declare
that what I claim is :-
In the course of the manufacture and construction of compound stranded wire ropes
forming compound strands of a number of wires round a core and over these laying a
covering of wires composed of different gauges of wire and so proportioned that the
crowns of the hole of the wires of such covering will strike the arc of the same circle
each larger wire thereof lying in the interstice of the two wires underneath throughout
and each smaller wire lying on the crown of the one wire underneath throughout
substantially in the manner and for the purposes hereinbefore described and illustrated
in the drawings annexed.
·ש..
1000
TONGUE & BIRKBECK,
34, Southampton Buildings, London, W.C.,
• Agents for the Patentee.