A Process for Waterproofing and Preserving Textures and other " Materials.
Year: 1889

page_text: Date of Application, 8th May, 1889
Complete Specification Left, 15th Nov., 1889-Accepted, 28th Dec., 1889
SPECIFICATION.
PROVISIONAL
A Process for Waterproofing and Preserving Textures and other
"
Materials.
We, CHARLES FREDERICK HIME of 100 St. Paul's Road, Camden Town in the
County of London, Waterproofer and JOHN HENRY NOAD of 12 Prestbury Road,
East Ham, in the County of Essex, Analytical Chemist, do hereby declare the nature
of this invention to be as follows :-
Textures and other materials have been waterproofed and preserved against decay
or ravages of insects by treating them with cupr-ammonia, but this treatment 18 in
many cases objectionable on account of its affecting the colours and dyes of the
materials treated. Our invention relates to means of waterproofing and preserving
without materially affecting the colors or dyes of the materials treated. For this
purpose, we dissolve cotton or other substances containing cellulose in a strong solution
of cupr-ammonia; from this we precipitate the copper by adding scrap zinc to the
solution and we thus convert the liquid into a colourless mucilaginous solution of
ammonia-zinc and cellulose. In a bath of this mucilaginous liquid we soak the
texture or other material so that it is thoroughly impregnated; we then squeeze
out the superfluous liquid and dry the material, calendering it if necessary.
Dated this 8th day of May 1889.
ABEL & IMRAY,
Agents for the Applicants.
COMPLETE SPECIFICATION.
A Process for Waterproofing and Preserving Textures and other
Materials.
We, CHARLES FREDERICK HIME of 100 St. Pauls Road, Camden Town in the
County of London, Waterproofer, and JOHN HENRY NOAD of 12 Prestbury Road,
East Ham, in the County of Essex, Analytical Chemist, 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 :-
Textures and other materials have been waterproofed and preserved against decay
or ravages of insects by treating them with cupr-ammonia but this treatment is in
many cases objectionable on account of its affecting the colours and dyes of the
materials treated Our invention relates to means of waterproofing and preserving
without materially affecting the colours or dyes of the materials treated. For this
purpose we dissolve cotton or other substance containing cellulose in a strong
solution of cupr-ammonia containing at least 4 per cent. by weight of copper the
quantity of cellulose being about 3 per cent. by weight of the solution, from this
solution we precipitate the copper by adding scrap zinc to the solution, and we
thus convert the liquid into a colourless mucilaginous solution of ammonia zinc and
cellulose In a bath of this mucilaginous liquid we soak the texture or other material
so that it is thoroughly impregnated, we then squeeze out the superfluous liquid
and dry the material, calendering it if necessary.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
The herein described process for waterproofing and preserving textures and other
materials by treating them with a solution of cellulose and ammonia zinc prepared by
adding zinc to a solution of cupr-ammonia and cellulose.
1000
Dated this 15th day of November 1005.
TO ARN THAT SITT
Тотещрог 1007.
ABEL & IMRAY,
Agents for the Applicants.
ABEL & IMRAY,
Agents for the Applicants.