Improvements in the Construction of Cord and Rope.
Year: 1888

page_text: Date of Application, 17th Nov., 1888
Complete Specification Left, 10th Aug., 1889-Accepted, 21st Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Cord and Rope.
THOMAS STRUTHERS MINNES Whitefield Brass Works Govan Glasgow, Manu-
facturer of Engineering Instruments, do hereby declare the nature of this invention
to be as follows:-
The use of cord and rope composed of textile material alone is limited to purposes
where the strain is not great, and for greater strains twisted wire cord or rope is
used. This wire rope like the ordinary textile cord has considerable stretch,
increasing with the load, and twisted wire rope is also liable to kink, and is difficult
to coil up. My invention consists in placing a number of round square or oblong
wires, side by side that is parallel to each other, (not being twisted together) and
covering these wires with textile material.
The cord or rope thus made presents a tensional resistance of the total cross
sectional area of all the wires, while the cord or rope is very flexible, as the wires,
being independent of each other, present much less sideway resistance than the
product of the resistance of one of the wires multiplied by the number of wires
used.
Dated this Seventeenth day of Novumber 1888
COMPLETE SPECIFICATION.
Improvements in the Construction of Cord and Rope.
THOMAS STRUTHERS MINNES 56 Waterloo Street, Glasgow Manufacturer of
Engineering Instruments do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
The use of cord and rope composed of textile material alone is limited to purposes
where the strain required is not great, and for purposes where great strains are used,
twisted wire rope is used, this wire rope like the ordinary textile rope has usually a
great amount of stretch as the increasing load is put on. The twisted wire rope is
also liable to kink and break and is difficult to coil up.
My invention consists in placing a number of round, square or oblong wires side
by side (not being twisted or woven together) and covering them with textile
material. The cord or rope thus made presents a tensional resistance of the total
sectional area of the whole of the wires as well as the textile material while the cord
or rope is very flexible the wires being independent, present a sideway resistance
much less than the product of the resistance of one of the wires multiplied by the
number of wires used.
In purposes where no stretching is desirable, the wires, as under my invention,
running straight through, present a solid pull, while twisted wire rope is apt to stretch
owing to the pitch of twist lengthening through the strands settling down at a
different pitch or angle to that at which the cord or rope was manufactured, thus
increasing the length of the cord or rope.
I also place several cords (made as described with several wires running parallel
to each other and not being woven or twisted together, and covered with textile
material) together parallel and not woven or twisted together, and covering these
with an outside textile covering.
The textile coverings may be woven or braided over the wires or cords once or
oftener

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I claim is
First. The construction of cord or rope having several round, square, oblong or
other shaped wires running straight or parallel to each other and not being twisted or
woven together and covered once or oftener with a covering of textile or other
material.
ropes as
Second. The construction of cord or rope having several cords or
described in first claim, these being placed parallel to each other, and not woven or
twisted together, and covered once or more with a covering of textile or other
material.
Dated this Ninth day of August. 1889.