IMPROVE- MENTS IN BELTS OR STRAPS FOR DRIVING PURPOSES
Year: 1884

page_text: I, DAVID WILLIAMS of Snowdon Mills, Portmadoc, in the County of Caernarvon
Manufacturer, do hereby declare the nature of my said invention for "IMPROVE-
MENTS IN BELTS OR STRAPS FOR DRIVING PURPOSES" to be as follows:-
This invention relates to improvements in belts or straps for driving purposes,
described in the Specification of Letters Patent granted to me, N° 2123 of 1881.
I find in use that as the stitching wears which holds together the several plies
or folds of canvas of which the belt is composed, there is a tendency for them to
separate and thus weaken or destroy the belt.
The object I now have in view is to produce a belt which will last longer thân
those previously described and which I have hitherto manufactured.
I construct the belting as heretofore preferably of strips or folds of flax canvas,
and coat these before they are folded or laid together with an adhesive solution
or cement consisting preferably of a solution of india rubber, gutta-percha, black
pitch, shellac, resin, or other similar material. The strips or folds are then laid
together, and the whole passed through rollers and firmly stitched together, and
subsequently treated and dried as described in the Specification of my former
patent hereinbefore referred to.
Belting manufactured according to my present invention, I consider will be more
durable than what I have previously manufactured.
WP. THOMPSON & Co.,
Of 6, Lord Street Liverpool,
Patent Agents for the Applicant.

page_text: b
I DAVID WILLIAMS Snowdon Mills, Portmadoc, Carnarvonshire Manufacturer
do hereby declare the nature of my said invention for "IMPROVEMENTS IN BELTS
OR STRAPS FOR DRIVING PURPOSES" 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 improvements in belts or straps for driving purposes,
described in the Specification of Letters Patent, granted to me No 2123 of 1881.
I find in use that as the stitching wears, which holds together the several plies
or folds of canvas, of which the belt is composed, there is a tendency for them to
separate, and thus weaken or destroy the belt.
The object I now have in view is to produce a belt which will last longer than
those previously described, and which I have hitherto manufactured. I construct
the belting as heretofore preferably of strips or folds of flax, canvas, and coat these
before they are folded or laid together, with an adhesive solution or cement
consisting preferably of a solution of india rubber 3 parts, gutta percha 4 parts,
black pitch 4 parts, resin 2 parts, Welsh cement 3 parts, and linseed oil 6 parts;
these are boiled together and applied to the belting material while hot. The strips
or folds are then laid together and the whole passed through rollers, when they are
tightly pressed together, and when dry, stitched with longitudinal rows of stitching
in a sewing machine. After the belt is stitched it is coated or saturated with a
composition consisting preferably of
White lead
Whiting
Resin
Red Lead
Welsh Cement
=
Raw linseed oil =
2 parts
÷ 3
"
"3
3
"
"
12
"
These ingredients are well mixed together, and placed in a trough or vessel, into
which the belting is then placed, until its outer pores have become saturated with
the composition. This composition renders the belting waterproof and flexible. 3
The belting is then again pressed in rollers, and after it is thoroughly dry, passed
through another set of rollers travelling at differential speeds, which take the
"stretch" out.
The Welsh cement herein referred to consists of

page_text: adhesive solution or cement preferably prior to their being laid together, and
afterwards compressing them tightly to form a compact belting, substantially as
described.
2nd. A belt or strap for driving purposes composed of strips or folds of canvas
or cotton, cemented and stitched together, and rendered flexible, and impervious to
dampness, by coating or saturating with a prepared composition, substantially as
described.
.
3rd. The improvement in belts or straps for driving purposes, which consists
in the application to them of an adhesive solution or cement, composed of the
ingredients, substantially as hereinbefore described, and for the purposes set forth.
Dated 0152761
ay or March 1885.
WP. THOMPSON & Co.,
Of 6, Lord Street, Liverpool,
& 323, High Holborn, London,
Patent Agents for the Applicant.
WP. THOMPSON & Co.,
Of 6, 'Lord Street, Liverpool,
& 323, High Holborn, London,
Patent Agents for the Applicant.