IMPROVEMENTS IN THE MANUFACTURE OF WIRE ROPE
Year: 1878

page_text: LETTERS PATENT to John Temple, of the Warrington Wire Rope Works,
Limited, of Liverpool, in the County of Lancaster, for the Invention of
"IMPROVEMENTS IN THE MANUFACTURE OF WIRE ROPE."
PROVISIONAL SPECIFICATION left by the said John Temple at the Office
of the Commissioners of Patents on the 2nd March 1878.
John Temple, of the Warrington Wire Rope Works, Limited, of Liverpool,
in the County of Lancaster. "IMPROVEMENTS IN THE MANUFACTURE OF WIRE
ROPE."
The object of this Invention is to manufacture a rope of uniform sectional area,
yet varying in strength, for such purposes as winding-ropes in collieries, where the
upper part has much more strain than the lower.
For this purpose I construct the rope with a greater number of wires in each
first formed strand, and then in the intermediate parts of the rope gradually sub-
stitute hemp as the centre of each strand instead of wire for one part of the rope, so
that in proportion as the strain is reduced hemp is substituted for wire. My rope
thus has all the advantages of a parallel rope and yet decreases in weight the same
as a taper rope does.
This Invention is applicable to both round and flat wire ropes.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Temple in the Great Seal Patent Office on the 2nd September
1878.
JOHN TEMPLE, of the Warrington Wire Rope Works, Limited, of Liverpool,
in the County of Lancaster. "IMPROVEMENTS IN THE MANUFACTURE OF WIRE
ROPE."
rope is
In collieries or long hoists the weight of the rope itself is a considerable addition
to the weight to be lifted, and as this addition is reduced to zero when the
wound in it has often been usual to make a taper rope, that is, a rope having a
larger size and strength at one end than the other, the difference in strength being
usually proportioned to the weight of the rope itself, but these taper ropes are
difficult to make and have many disadvantages in working.
Now my Invention is to give all the advantages of a parallel rope without
making it a taper rope as hitherto.
The plan I prefer is to construct the rope with a larger proportion of wire at the
one end than the other, and I prefer to use a greater number of wires in each first-
formed strand (than has hitherto been customary) so as to increase the size of the
central core of the strands of the rope (the exact number of wires is immaterial), and
then gradually substitute hemp or equivalent fibre as the centre of each strand
instead of wire for the lower part of the rope, or that part receiving less strain, so
that in proportion as the strain is reduced hemp is substituted for wire. My rope
thus has all the advantages of a parallel rope and yet decreases in weight the same
as a taper rope does.
This Invention is applicable to both round and flat wire ropes. These ropes are
used for various purposes, such as for hoisting and haulage.
Having now described my Invention and the best mode known to me of carrying
it into effect, I beg to state that what I believe to be new and desire to claim under
the herein-before in part recited Letters Patent is, the manufacture of wire rope
with varying strength but of practically uniform width, as described by the gradual
diminution in the quantity of wire and the substitution for it of a lighter material
towards that portion in the length of the rope subject to least strain.
In witness whereof, 1, the said John Temple, have hereunto set my hand
and this Thirtieth day of August, in the year of our Lord 1878.
JNO. TEMPLE.
(LS)
Witness,
E. GARDNER COLTON,
of Mess. W. P. Thompson and Co's. Patent Office,
6, Lord St.,
L'pool.