Improvements in Belts or Belting for Driving, Elevating, and other Purposes.
Year: 1895

page_text: Date of Application, 28th Aug., 1895
Complete Specification Left, 28th May, 1896-Accepted, 11th July, 1896
PROVISIONAL SPECIFICATION.
Improvements in Belts or Belting for Driving, Elevating, and other
Purposes.
I, HENRY ALEXANDER COLE of Coronet Works, Bath Street, Liverpool in
the County of Lancaster, Belting and Hose Manufacturer, do hereby declare the
nature of this invention to be as follows:-
:―
This invention relates to belts or belting for driving, elevating and other
purposes, and is mainly designed to prevent or greatly reduce the liability of the
belts to constantly stretch when in use.
The constant stretching has caused so much inconvenience and loss of time
hitherto as to somewhat limit the use of cotton, hemp and flax belting for machine
driving and other purposes.
In carrying my invention into effect, I take preferably the ordinary cotton
canvas belting. I wish it to be understood however that I do not limit myself to
this kind of belting solely, but only mention it because such will perhaps be found
the most adapted for the treatment hereafter specified. Other kinds of belting
may however be used in its place, such as flax, hemp, hair, composition belts of
all kinds or even leather. I take therefore the cotton canvas such as is used in
ordinary cotton canvas belting (or its substitute) but of a superior quality, and
apply to or treat the inner plies or strata of the belt with gutta percha, balata or any
other similar or suitable composition which will prevent stretching. I prefer to
apply or treat one, two or more of the inner plies only with one or other of the
aforesaid substances, leaving the outer surfaces or plies of the belt without being
so treated.
The cotton canvas or its substitute may be stretched to its set before being
made up into belting and the gutta percha, balata then applied so as to preserve
its set and to give additional strength to the belt, but I do not confine myself to
this arrangement as in many cases I prefer not to stretch the material before being
treated. If desired one or more plies of suitable woven metal gauze cloth may be
inserted in the folds of the belt.
The canvas having been folded and treated with gutta percha, balata etcetera as
above described is then sewn with cotton or other thread or cord similar to
ordinary cotton belting but with an improved short stitch. The rows of sewing
being closer than in ordinary cotton belting, The belt may be sewn or rivetted
with extra rows of copper wire, the number of rows being regulated by the width
of the belting. It is then subjected to a coating of waterproofing oil and of
suitably prepared waterproofing paint and finally a coating of elastic varnish.
By this method, the belt whilst being rendered practically stretchless also
retains its flexibility. It is then ready for use according to whatever purposes it.
is destined and the foregoing processes tend in turn to embed, not only the wire
sewing or rivetting of the belt, and the cotton stitching if an ordinary cotton
canvas belting has been made use of, but also prevent the stretching of the belt
when in use, thus obviating the great disadvantage of having to constantly tighten
he belt.

page_text: COMPLETE SPECIFICATION.
Improvements in Belts or Belting for Driving, Elevating, and other
Purposes.
I, HENRY ALEXANDER COLE of Coronet Works, Bath Street, Liverpool in
the County of Lancaster, Manufacturer 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:
-
This invention relates to belts or belting for driving, elevating and other purposes,
and is mainly designed to prevent or greatly reduce the liability of belts to
constantly stretch when in use.
The constant stretching has caused so much inconvenience and loss of time
hitherto as to somewhat limit the use of cotton, hemp and flax and other composition
belting for machine driving and other purposes.
The further object of my invention is to provide a belting which, while being
suitable, for all general and usual purposes, will also be particularly suitable for
use in all wet and damp and warm places such as open air driving wet wheat
elevators in flour mills, grain warehouses etc., or for working in paper mills and other
wet or damp places, and in extreme and varied climates and temperatures, more-
over by my invention great durability is imparted to the belts or belting for general
driving and elevating purposes.
In carrying out my invention, I take preferably a strong cotton canvas and
stretch it to its limit before being made up into the belting. I do not however
limit myself to this material as other suitable kinds of cloth might do, such as that
made of flax, hair or hemp, woven either separately or in combination. I tak
therefore a strong cotton canvas (or its substitute) and oil it with the best linsee.l
(or other suitable oil), I then put the canvas through heavy rollers and afterward
hang it up until the oil has been completely absorbed into it. (The oiling may
however be done after the belt is made up but before it is painted.) I then
apply to or treat the inner plies or strata of the belting with a coating in the
form of a cement composed of gutta percha or balata or india rubber solution
with or without the addition of finely ground pumice stone and black varnish, but
forming a cement sufficiently rigid to prevent stretch and still pliable enough not
to interfere with the flexibility and grip of the belt when working on the pulleys.
I prefer to apply or treat one, two or more of the inner plies only with one or other
or some of the aforesaid substances leaving the outer surfaces or plies of the belt
without being so treated. The cotton canvas or its substitute is stretched as
already mentioned to its set before being made up into belting, and the gutta
percha, balata or india rubber solution then applied so as to preserve its set and to
give additional strength to the belt. If desired one or more plies of suitable
woven metal gauze cloth may be inserted in the folds of the belt.
The canvas having been folded and treated with the non-stretching composition,
is then put through a press or calender in order that the inner ply or plies having
been treated as described may firmly adhere to each other. The belting is then
sewn with cotton or other thread or cord similar to ordinary cotton belting but
with a shorter and more regular stitch, the rows of sewing being closer than in
ordinary red cotton belting. The belting having been oiled as before mentioned, it
is then steeped in special yellow waterproof paint (composed of a treated natural
ochre and boiled oil and dissolved or jelly beeswax with a small proportion of Paris
white and finely ground pumice stone, the latter having the effect of improving
the gripping power of the belting). By treated natural ochre I mean cleaned and
levigated natural ochre. The belting is then sewn or rivetted with extra rows of
copper wire, the number of rows being regulated to the width of the belting, and

page_text: is finally coated with an elastic varnish produced by boiling an oil till of sufficient
substance or consistency to act as a varnish.
By this method the belt being rendered practically stretchless also retains its
flexibility. It is then ready for use according to whatever purpose it is destined
and the foregoing processes tend in turn to embed not only the wire sewing or
rivetting of the belt, and the cotton stitching, but also prevent the stretching of
the belt when in use, thus obviating the great disadvantage of having to constantly
tighten the belt.
Having now particularly described and ascertained the nature of my said
invention, and the best mode known to me of carrying the same into effect, I wish
it to be understood that I am well aware that india-rubber and gutta-percha have
been used in very varying ways in belt manufacture, but mainly or entirely for
increasing the grip of the belt for water-proofing it, and for making it supple, but
I know of no instance where a belt or belting material has first been stretched to
its limit and then had gutta percha, balata, india-rubber or the like applied to it
so as to keep it from stretching further, or where such treated material has been
placed in the centre of a belt, but I declare that what I claim is-
=
1. The improvement in the manufacture of belting, which consists in forming
one or more of the inner layers of the belt of stretched material coated with and
thoroughly impregnated by a non-stretching composition such as described, and the
whole built, oiled and sewn or rivetted together, substantially as described.
46
2. The method or process of preventing, or greatly lessening stretching in belts,
which consists in forming one or more unstretchable" inner layers substantially
as described and then building up and completing the belt in the manner set forth.
Dated this 27th day of May 1896.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham, and London, Patent Agents.