Improvements in the Manufacture of Woven Belting.
Year: 1895

page_text: This Print is in accordance with the Original Specification as it stands after
Amendment (under Section 18 of the Patents, &c. Act, 1883) as allowed by
the decision of the Chief Examiner of the 5th day of August 1898.
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Woven Belting.
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We, WILLIAM TERRY and FESTUS RAWNSLEY, both of Dudley Hill, Bradford,
Manufacturers, do hereby declare the nature of this invention to be as follows:-
Our invention consists in the manufacture of an improved woven belting
which shall possess all the requisites of even working surfaces and great tensile
strength. Woven beltings have hitherto usually consisted of a number of "plys'
or thicknesses of fabric stitched or woven together, and considerable difficulty has
been experienced in consequence of the constant tendency to stretch; this tendency
being induced by the whole of the warp threads of which the fabric is composed
being interwoven with weft threads and on being subjected to great strain the
corrugations formed by this interweaving would gradually give way and the
threads approach more nearly straight ones. We overcome this difficulty by
making a kind of core in the fabric, consisting solely of perfectly straight threads
laid in between two or more surface fabrics, and in such a manner that they
bear, practically, all the strain. And these surface fabrics we may make single,
double or any number of plys according to the strength or bulk of belt required.
Or we may make several cores with dividing or supporting fabrics; and by these
means we produce a belt stronger and less liable to stretch than any previously
made woven belt.
Dated this 6th dox of March 1805
Improvements in the Manufacture of Woven Belting.
We, WILLIAM TERRY and FESTUS RAWNSLEY, of Dudley Hill, Bradford, in the
County of York, Commission Wool Combers, 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:-
Our invention consists in the manufacture of an improved woven belting for
driving pulleys in machinery which belting shall possess all the requisites of even
[Price 8d.1

page_text: "
or level working surfaces and strength. Woven beltings have hitherto usually
consisted of a number of "plys
or thicknesses of fabric stitched or woven
together but a considerable difficulty in such woven belting has been experienced
in consequence of the constant tendency to stretch. This tendency of stretching
has been induced by the whole of the warp threads of which the fabric is com-
posed, being interwoven with weft threads, which on being subjected to great
pulling strain the corrugations formed by this interweaving has gradually given
way thus causing the threads to approach more nearly to straight ones and
stretching to that extent. We overcome this difficulty by placing or inserting
a core within the fabric, which core consists solely of perfectly straight warp
threads laid in between two or more surface fabrics, and in such a manner, that
the core practically bears all the strain. These surface fabrics we may weave
single, double or any number of plys according to the strength or bulk of belt
required, or we may make several cores with dividing fabrics, and by these means
we produce a belt stronger and less liable to stretch than any belt previously
woven.
In order that our invention may be understood we proceed to describe it by the
aid of the accompanying drawings.
Fig. 1 is a longitudinal section of our belt, representing one arrangement or
set of threads. The surface fabrics A, B, consist, as will be seen, each of a double
ply plain cloth of a peculiar construction. The core or strain bearing warp
threads are shewn at D, and they are all laid in a perfectly straight line and
parallel to each other and they are embedded during the process of weaving
between the upper and lower fabrics A, B, and we ensure in the process of weav-
ing that as far as possible these straight threads D are as near as can be of the
same tension.
There are three warp threads 1, 2, 3, and 1ª, 2ª, 3ª, in each cloth respectively,
which are interwoven with the weft as follows:-The thread 1 in A cloth inter-
weaves alternately with the weft threads W, and thread 2 interweaves with weft
threads W and W whilst thread 3 also passes underneath W₁ and over W as
shewn in the drawings.
Exactly the same order of interweaving is followed by cloth B.
We then introduce two binding threads as shewn at C and C₁ each passing
in turn from cloth A to cloth B and interweaving with every alternate thread Wi
with each cloth respectively so that alternate threads Ware taken hold of by
the binding threads C and C¹. By this means the core or strain bearing warp
threads are embedded between the upper fabric A and lower fabric B. The
numerals 1 to 8 in Fig. 1 indicate the order of inserting the succeeding picks of
weft.
At Fig. 2 we illustrate the healding draft shewing the number of heald shafts,
namely ten, by which the pattern can be woven. F shews the healds carrying
the core or strain bearing threads D, and B, B shew the binding threads and the
healds or shafts carrying same. It will be seen that the threads D) are the
threads which will bear the pull or strain in working; the surface fabrics A
and B can be made of any required degree of firmness or smoothness. Then the
advantages are, distinctly that in consequence of the strain bearing threads being
laid perfectly straight there is no liability to stretch beyond the natural elasticity
of the threads and the fibres themselves which contingency we guard against by
using yarn firmly spun, cabled yarn by preference--and well set and stretched
before and during the process of weaving, and further, the surface A and B being
practically free from strain there is no tendency to fracture the threads and with
a proper application of a suitable dressing they will remain intact for a long period.
The fabrics A and B may be of cotton and the strain bearing threads Deither
of cotton or any other strong threads suitable for the purpose.
The methods of weaving double, or multiple fabric as in A and B respectively
are well known; and we may either weave them plain, twilled, or any other suit-
able pattern,

page_text: naving now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
The manufacture of fabrics being a combination of surface cloths, strain bear-
ing threads and binding threads for driving belts used for the transmission of
power, or other like purposes substantially as and in the manner herein set forth
and described.
Dated this 20th day of November 1905
TASKER & CROSSLEY,
Halifax, Patent Agents.