The Manufacture of an Improved Composition for Waterproofing and other Purposes.
Year: 1892

page_text: Date of Application, 3rd Dec., 1892
Complete Specification Left, 12th Apr., 1893-Accepted, 13th May, 1893
PROVISIONAL SPECIFICATION.
The Manufacture of an Improved Composition for Waterproofing and
other Purposes.
I, WHITMORE BAKER, of High Street, Downham Market, in the County of
Norfolk, Chemist & Druggist, do hereby declare the nature of this invention to be
as follows:-
This invention relates to the manufacture of a composition applicable for coating
walls for the prevention of damp, for waterproofing paper, and other fabrics, for
coating water-supply pipes and for other purposes.
In manufacturing my improved composition I mix and combine shellac or rosin,
carbonate of lead and carbolic acid in the following manner :-I dissolve the shellac
or rosin by the addition thereto of methylated or other suitable spirit, and then
heating the same to the required temperature. When partially cooled I add lead
in the form of a carbonate of lead or its equivalent, and after thoroughly mixing
the dissolved shellac and the lead I add carbolic acid.
The proportions and strengths of the ingredients vary according to the purpose
for which the composition is to be employed.
Dated this 30th day of November 1892.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
The Manufacture of an Improved Composition for Waterproofing and
other Purposes.
I, WHITMORE BAKER, of High Street, Downham Market, in the County of
Norfolk, Chemist & Druggist, 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 :-
This invention relates to the manufacture of a composition applicable for coating
walls for the prevention of damp, for waterproofing paper, and other fabrics, for
coating water-supply pipes and for other purposes.
.
In manufacturing my improved composition I mix and combine shellac or rosin,
carbonate of lead and carbolic acid in the following manner :-I take about four
ounces of shellac or rosin and dissolve it by the addition thereto of about twenty
ounces of methylated or other suitable spirit, and then heating the same to the
required temperature. When partially cooled I add about a quarter of an ounce
of lead in the form of a carbonate of lead or its equivalent, and after thoroughly
mixing the dissolved shellac and the lead I add about half an ounce of carbolic
acid.
The above proportions are those which I have found to give good results in
practice but it will be understood that they may be somewhat varied according to
the purpose for which the composition is to be employed.
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 :-
The manufacture and use of an improved composition for waterproofing and other

page_text: purposes, such composition being formed by mixing and combining the above named
ingredients substantially in the manner and in about the proportions specified.
Dated the 12th day of April 1893.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.