Year: 1886

page_text: Date of Application, 8th Sept., 1886.
Complete Left, 12th May, 1887.
Complete Accepted, 14th June, 1887.
3344CAAWANS
I ROBERT PUNSHON of 20 Manchester Street, Kings Cross, in the County of
Middlesex, Civil Engineer do hereby declare the nature of this invention to be as
follows:-
The object of my invention is to waterproof cloth, for clothing purposes principally,
and other fabricks of the same nature. My method of doing this, is. First, to wash
the cloth or other fabrick, in a hot but weak solution of carbonate of soda, and
water to remove any grease or dressing used in the manufacture of the cloth or fabrick,
and then to wash it, in hot water to cleanse it from the soda. Second. I take a boiling
solution of purified white paraffin and cotton oil, and thoroughly saturate the cloth or
fabrick to be waterproofed. The cloth is then removed from the solution of Paraffin
and oil and well rinsed to remove the surplus paraffin and oil. The waterproofing
mixture can be made of various colours. The third process is to stove or dry the cloth
or fabrick in a hot room or stove heated to a temperature of 200° F. when the process
is complete, and the cloth or fabrick is waterproofed. Should I require to make the
waterproofing material for coarse and very thick cloth or other fabrick I add about
thirty parts of resin to oil of Turpentine and mix it with the paraffin and oil.

page_text: Cotton Goods, and other Suitable Materials.
I ROBERT PUNSHON of 20 Manchester Street Kings Cross in the County of
Middlesex Civil Engineer 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 object of this invention is to waterproof Cloth for Clothing and other purposes
so as to protect it from the action of rain and water at the same time leaving Clothing
Cloths and fabrics pervious to air thereby avoiding the injurious consequences wearers
of india rubber or similar Coats are subject to. To waterproof Linen, Cotton goods
and similar fabrics for sheeting tent awning and the various other uses such water-
proofed fabrics are put to. To waterproof Paper of all kinds and similar fabrics for
packing and the many other purposes such fabrics are used for.
My method of treating the above mentioned fabrics is as follows:-Cloth, Linen
Cotton Goods and similar fabrics. First to wash the cloth or other fabric in a hot but
weak solution of Alkali and water so as to remove any grease or dressing used in the
manufacture of the cloth or other fabric and then to wash it in hot water to cleanse it
from the Alkali afterwards thoroughly dry the fabric in a hot room or stove. Second
when the cloth or other fabric is dry it should then be heated up to about 100° F in
the drying room or stove (this is particular as the Cloth or other fabric is then free
from damp air) and at that heat immerced in a hot solution of purified white paraffin wax
and Cotton oil (heated not above 150° F) in the proportions and prepared as hereinafter
described. Third after allowing the Cloth or other fabric to be thoroughly saturated
it is to be removed from the solution and passed once or twice through a Wringing
machine with heated rollers to remove the surplus solution and press or smooth the
cloth or other fabric into its former shape. Fourth then place the cloth or other fabric
again in the hot room or stove for five or ten minutes (temperature not over 120° F)
after which it is ready for use. Fabrics thus treated are odourless and retain their
natural suppleness and color are quite pervious to air but prevent rain from penetrating
the fabric however loose its texture.
Paper and similar fabrics are treated in a similar way except that no previous
washing with alkali (as described in paragraph First) is required should the paper or
other fabric want slightly treating it should be laid upon warm plates and be sponged
over with the Solution and then placed in the hot room as herein before described.
To prepare Solution. Heat each ingredient separately up to 150° F then mix
thoroughly together.

page_text: Quantities. For Bratice and sail cloth:-2 parts purified White Paraffin Wax
and 1 parts Cotton oil part Resin and oil of Turpentine. For clothing Cloth linen
Cotton goods and similar fabrics :-1 part of Wax and 1 parts of Oil. For very thick
paper 1 part of Wax and 1 part Oil. For any other paper or Fabric:-1 part Wax
and 2 parts of Oil.
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
An improved method for waterproofing Cloth linen paper cotton goods and other
similar fabrics with and by the process hereinbefore described and I claim to use two
parts of Resin desolved in 12 parts of oil of Turpentine in the Solution for heating
thick heavy Cloths and similar fabrics.