Improvements in the Manufacture of Waterproof Paper or Fabrics, specially applicable for Use in the Manufacture of Cartridge Cases, Trunks, Drapers' Boxes, Postal Tubes, and Fireworks.
Year: 1895

page_text: Date of Application, 8th June, 1895-Accepted, 28th Sept., 1895
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Waterproof Paper or Fabrics,
specially applicable for Use in the Manufacture of Cartridge
Cases, Trunks, Drapers' Boxes, Postal Tubes, and Fireworks.
I CECIL TOPLIS Fox of "The Plâs" Chingford in the County of Essex
House and Estate Agent 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:-
My invention relates to a process for waterproofing paper or other fabrics and
to the materials used in the said process.
I take white lead and mix it with boiled linseed oil and stainers of any required
colour. This gives an ordinary paint as used by painters.
I then mix the paint so obtained with linseed oil which has been rendered thick
and almost glutinous by continued boiling. The paint thus obtained may be
spread upon paper in any of the well known ways an even surface is thus
produced and the paint will dry without difficulty in an ordinary drying room.
The paper covered with paint thus produced is waterproof and durable and may
be washed with soap and water without injury to the surface.
When treating fabrics other than paper I pass the fabric through a solution of
size previous to the application of the paint as above described.
I find that the stiffness and waterproof quality of the waterproof paper or fabric
so prepared is greatly improved by pasteing or brushing over the back of the
paper or fabric a thick layer of paste prepared as follows.
For the purpose of preparing one gallon of such paste I boil two pounds of
gum arabic in three quarters of a pint of water, when the gum is dissolved I add
half a pint of paraffin and well mix the compound. I then add a quarter of a
pound of gelatine which has been previously melted in a small quantity of cold
water. I then add a quarter of a pint of methylated spirit and a stainer of any
required colour and I boil the whole for about a quarter of an hour. This on
cooling gives a thick viscid substance.
To paste it on the back and surface of the paper or fabric I warm it and apply
with a brush. On cooling and drying it gives a hard and waterproof covering to
the back surface of the paper or fabric. When rolling paper or fabric so prepared
for the manufacture of cartridge cases, the pressure of the operation produces a
rigid waterproof case or covering for the case.
The paper or fabric thus prepared may also be used as a covering for water-
proof trunks drapers boxes, postal tubes and fireworks.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
i. A waterproof paper or fabric having a paint on one surface and a paste on
the other substantially as described.
2. In the manufacture of waterproof paper the use of a paint and paste
substantially as described.

page_text: 3. In the manufacture of cartridge cases drapers boxes travelling trunks postal
tubes and firework cases the use of a paper or fabric prepared substantially as
described.
£T.. 100%
W. W. BOX,
Solicitor, 28 Great James Street, Bedford Row, London, W.C.,
Agent for the said Cecil Toplis Fox.