Improvements in the Manufacture of Waterproof Canvas, Canvas Belting, Sail-cloth, and other Fabrics, also in Preparing and Treating Twines and Threads for Sail Making, the Manufacture of Boots and Shoes, and analogous Purposes.
Year: 1899

page_text: Date of Application, 13th Jan., 1899-Accepted, 11th Mar., 1899
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Waterproof Canvas, Canvas
Belting, Sail-cloth, and other Fabrics, also in Preparing and
Treating Twines and Threads for Sail Making, the Manufacture
of Boots and Shoes, and analogous Purposes.
I, WILLIAM HENRY GOOD, of the Patent Twine Works, Yeovil, in the County of
Somerset, Twine 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:-
The first part of my invention relates to improvements in the manufacture of an
improved waterproof canvas, sail-cloth, and other fabrics, thereby rendering them
more suitable for the purposes to which they are applied.
The threads or twines used in the manufacture of the said canvas, sail-cloth,
and other fabrics, are dressed previous to their being woven in the manner here-
inafter described, after which they may be used as follows:
Firstly. In the weft only, which will render the fabrics waterproof whilst the
inner or waterproof portion is protected by the warp or outer portion.
Secondly. The warp only may be dressed.
Thirdly. Both warp and weft may be dressed, making the whole of the material
used waterproof.
The said first part of my invention relates to improvements in preparing and
treating twines or threads for sail making, and other purposes, and part of my
improvements consists of an improved tanning mixture composed of the following
ingredients in or about the proportions specified:
Birch bark
Bichromate of potash
Chloride of calcium
Tar
Solution of alkali
14 pounds.
1 pound.
pound
1 pint.
2 pounds.
per
The twines or threads are first boiled in a solution of alkali (from 4 to
cent., in strength) to destroy the perishable matter contained in the twine or
threads, after which they are immersed in a vessel containing the tanning liquor,
and subsequently dried. The second part of my invention consists in the ingredients
of the compound used in preparing or dressing the twine or thread, which com-
pound is composed of the following ingredients in or about the quantities and pro-
portions hereinafter specified:
Poppy oil
India rubber solution
Red oxide of mercury
2 gallons.
-
2 pounds.
-
1 pound.
Resin
Bees-wax
Palm oil
28 pounds.
28 pounds.
14 pounds.
These ingredients not only render the twines or threads more durable, but keep

page_text: After the tanned threads are dried they are reeled and then passed through a
trough containing the dressing composition, and then between rollers. The lower
roller is partially immersed in a trough containing the dressing composition,
while the upper roller is covered with linen or other suitable fabric. The threads
so treated may subsequently be wound on suitable reels or spools.
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:-
1. The improved manufacture of waterproof canvas, canvas belting, sail cloth,
and other fabrics, by weaving them either partly or entirely with threads or twines
dressed and rendered waterproof, substantially in the manner and for the purposes
hereinbefore described.
2. The improved tanning composition for threads or twines, consisting of birch
bark, bichromate of potash, chloride of calcium, tar, and solution of alkali, mixed
together substantially in or about the proportions specified.
3. The improved compound for dressing twines or threads used in the manufac-
ture of sail cloth, boots and shoes, canvas belting and the like, such compound
consisting of poppy oil, india rubber solution, red oxide of mercury, resin, bees-
wax and palm oil, substantially in or about the proportions specified.
Dated this 13th day of January 1899
HUGHES, SON & Co.,
38, Chancery Lane, London, W.C., for the Applicant.
HUGHES, SON & Co.,
38, Chancery Lane, London, W.C., for the Applicant.