Improvements in the Manufacture of Rubber Coated Waterproof Fabrics.
Year: 1893

page_text: Date of Application, 30th Mar., 1893
Complete Specification Left, 27th Dec., 1893-Accepted, 27th Jan., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Rubber Coated Waterproof
Fabrics.
:
...
We, WILLIAM ABBOTT of the Firm of Abbott Anderson & Abbott of
Dod Street Limehouse in the County of London India Rubber Manufacturers
and WILLIAM RICHARD WILKS of 118 Abbotts Road Poplar in the said
county, Waterproofer do hereby declare the nature of this invention to be as
follows:-
'
This invention has for its object to manufacture rubber coated fabrics in such a
way that whilst the manufacture generally is improved and expedited a con-
siderably less weight of rubber can be used to give a perfect waterproofing of the
fabric.
According to this invention the rubber is first coated upon a sheet with a smooth
or polished surface for instance one of prepared rubber cloth cured and brightly
polished but we do not limit ourselves to the use of this material as any other
suitable material may be used. To this sheet the rubber is applied in a number of
coatings according to the weight of rubber required to render the fabric to be
treated waterproof. The said rubber so applied to the said sheet is then trans-
ferred to the fabric to be coated which may be effected by leading the rubber
coated sheet between rollers between which the fabric to be coated is also passed
so that the face thereof to which the rubber is to adhere is in contact with the
rubber carried by the sheet and the said rubber adheres to the fabric. The rubber
solvent is evaporated from the rubber which may be done by hot chests in the
ordinary way and the sheet can afterwards be removed leaving the rubber upon the
fabric. Some kinds of fabric to which the rubber is to be applied may be
with advantage, or if preferred previously coated with a coat of rubber or other
suitable matter.
Dated this 30th day of March 1893.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, Agents.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Rubber Coated Waterproof
Fabrics.
We WILLIAM ABBOTT of the Firm of Abbott Anderson & Abbott of
Dod Street Limehouse in the County of London India Rubber Manufacturers
and WILLIAM RICHARD WILKS of 118 Abbotts Road Poplar in the said
county, Waterproofer do hereby declare the nature of our 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 has for its object to manufacture rubber coated fabrics in such a
way that whilst the manufacture generally is improved and expedited a con-
siderably less weight of rubber can be used to give a perfect water-proofing of the
fabric.
According to this invention the rubber is first coated or spread upon a sheet
with a smooth or polished surface for instance one of prepared rubber cloth cured
or vulcanized and brightly polished which may be done by applying a coat or coats

page_text: of what is known in the trade as "bright polish" to the cured or vulcanized rubber
but we do not limit ourselves to the use of this material as any other suitable
material which has, or to which can be imparted, a suitable smooth or polished
surface may be used. To this sheet the rubber is applied in a number of coatings
(which can be done in the ordinary manner of spreading rubber on cloth)
according to the weight of rubber required to render the fabric to be treated
waterproof. The said rubber so applied to the said sheet is then transferred to the
fabric to be made waterproof which may be effected by leading the rubber coated
sheet between rollers between which the fabric to be made waterproof is also
passed, so that the face thereof to which the rubber is to adhere is in contact with
the rubber carried by the sheet and the said rubber adheres to the fabric. The
rollers between which the sheet and its rubber coating and the fabric to which it
is to be transferred are passed may be provided with means by which the pressure
can be adjusted as required and the said sheet and its rubber coating and the said
fabric can be respectively carried by spindles or rollers mounted on bearings so
that the said sheet and its rubber coating can be brought together to pass in
contact between the said pressure rollers. The rubber solvent is evaporated from
the rubber, which may be done by hot chests in the ordinary way, and the sheet
can afterwards be removed leaving the rubber upon the fabric. Before removing
the sheet the whole of the materials may be rolled upon a roller to which cooling
water is admitted. The first coat of rubber applied to the sheet should be run
as it is termed in the trade to ensure ease of transfer. The last coat
should also be run 56 open " and should consist of good sticky rubber dough to
ensure its adhering to the fabric to which it is to be transferred. As soon as the
last coat is applied the coated sheet is passed through the pressing rollers with the
fabric as aforesaid. Whilst transferring I may apply farina or pounce or like
material if required. Some kinds of fabric to which the rubber is to be applied
may, with advantage, or if preferred be previously coated with a coat of rubber,
or other suitable matter. If it be desired to make a double fabric, that is a com-
pound fabric consisting of two layers of fabric with the rubber coating between
a single coated fabric prepared as described may whilst the rubber is still green
(that is before the solvent is evaporated) be passed between the pressure rollers
(as described with regard to the sheet carrying the rubber coating) a fabric being
also passed between them so that it also adheres to the rubber and a double fabric
be thus formed. In this case the coating of rubber on the fabric may have
a final coating of rubber solution applied to it just before it passes through the
rollers.
open
"
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In the manufacture of rubber coated waterproof fabrics applying the rubber
first to a sheet with a surface from which it can afterwards be separated and
afterwards passing the said rubber coated sheet between rollers in contact with the
fabric to be coated or waterproofed and afterwards removing the said sheet
substantially as hereinbefore described.
2. As a new article of manufacture a rubber coated or waterproof fabric to
which the rubber has been applied substantially as hereinbefore described.
Dated the 27th day of December 1893.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.