Improvements in the Manufacture of Ropes, Cords, and the like.
Year: 1899

page_text: Date of Application, 23rd Feb., 1899-Accepted, 17th June, 1899
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Ropes, Cords, and the like.
I, FRANZ EDWARD ALBERT GÜNTHER, of 16 and 17, Woorth, Halberstadt, in
the Kingdom of Prussia, German Empire, Merchant, 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:
―
In the hitherto manufacture of ropes, cords and the like it has generally been
the custom to make these of circular formation in cross section, whatever may be
the number of strands employed in their construction, but such ropes or the like
when employed in lieu of belts for driving machinery acquire a habit of turning
or twisting laterally when at work, thus causing unnecessary friction in a direc-
tion contrary to that in which a frictional grip is desired between the said rope
or the like and grooves in which they run for the purpose of preventing slip,
which such lateral turning is likely to induce. Moreover such lateral twist is
conducive to the unbinding of the strands, from which results the lengthening
of the rope, and the time and labour lost in cutting, splicing, and shortening of
same. The well known four sided (or square in cross section) ropes are constructed
by platting together the individual strands, but such ropes are attended with
the disadvantage that they can only be shortened or spliced by the plat lengths,
consequently they cannot be made to any exact measurement, and such ropes are
liable to be drawn together too tightly or not tight enough.
To obviate these inconveniences is the object and purpose of my invention,
which I attain by constructing a rope or the like of many angles or edges in
cross section, so as to coincide with the cross sectional formation of the peripheries
of the pulleys or wheels or other surfaces with which they are to engage, by.
which means the said ropes or the like obtain a better and firmer grip upon the
said surface or surfaces, and are prevented from turning or twisting therein.
For the purpose of rendering my invention capable of being fully understood,
I have hereunto appended a sheet of drawings, in which I have chosen to show
a rope or the like of triangular formation in cross section, Fig. 1 shewing the
manner in which the strands may be twisted together in the manufacture of a rope
or the like according to my invention, while Fig. 2 is a cross section of such a
rope upon the line A B of Fig. 1 employed in connection with a pulley, wheel,
or other surface, the periphery of which is of V shape in cross section.
In carrying my invention into effect, the hemp, flax, cotton, wire or other
threads of which the rope or the like is to be constructed, are first twisted into
yarns, and passed through suitable devices in the usual manner, any desired
number of the said yarns being then united by twisting them together in the
one direction in pairs to form strands, such pairs (in the case of the three sided
rope illustrated) being represented by a a and a a¹ respectively which in turn
are twisted together to form a rope or the like, as at 6 Fig. 2, whereby--according
to the manner of twisting and the number of strands employed, a three, four
or more sided rope or the like is produced, which, according to Fig. 2, is assumed
to be of triangular formation in cross section, the pulley or other surface with

page_text: which it is intended it shall engage being indicated by c in the latter figure. In
like manner three of the said pair strands would be used to form a four sided
rope, and four for a five sided rope, and so on.
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 method of manufacturing ropes, cords, and the like, having three
or more angular edges or sides, and in which the yarns are twisted together to form
strands, which in turn are twisted together in such a manner as to form a rope
or the like, of triangular or other many sided formation in cross section, sub-
stantially as and for the purposes herein set forth and shewn.
ג
1 ..
GEO. THOS.. HYDE,
1, Broad Street Buildings, London, E.C.,
Agent for the Applicant.