Improved Process and Compositions for Coating Walls or similar Surfaces to Prevent the Penetration of Damp.
Year: 1891

page_text: Date of Application, 2nd June, 1891
Complete Specification Left, 25th Feb., 1892-Accepted, 26th Mar., 1892
PROVISIONAL SPECIFICATION.
Improved Process and Compositions for Coating Walls or similar
Surfaces to Prevent the Penetration of Damp.
A communication from abroad by JOHANNES PETRUS VAN BALGOOY, of Weert,
in the Province of Limbourg and Kingdom of Holland, Engineer.
I, WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E. of the Agency for
Foreign Patent Solicitors 6, Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster and 323 High Holborn in the.
County of Middlesex, Civil Engineer, do hereby declare the nature of this inven-
tion to be as follows:-
:―
This invention relates to a process for the manufacture of chemical preparations
with which walls of houses are coated for the purpose of preventing damp from
penetrating.
In localities where the rainfall is large, or even where houses are exposed without
shelter to bad weather, the damp makes itself felt in a very disagreeable manner,
the wall papers and the plaster do not adhere in the rooms, and even the masonry
is damaged by the frost, etcetera.
.
In order to remedy these drawbacks in very damp places, there is no other
remedy than to coat the house with plates of zinc or even with wooden shingles in
such a way that there exists an insulating layer of air between the walls and the
covering.
This method in any case is very costly and destroys any architectural beauty.
Another known method of protection against damp is by means of tar, which
can only be rarely employed, because of its black colour and its disagreeable
odour.
This new process consists in first coating the wall with a thick solution and
then with a thin solution, which thus form a covering into which water cannot
penetrate.
The first solution is composed of stearine, saponified with caustic potash, of acetic
acid and of salicylic acid. These substances are heated in water up to boiling
point. A little phenic acid is added thereto to destroy the unpleasant odour of the
soap.
The thin solution is composed of alum or chloride of calcium and salicylic acid
diluted with water and a little phenic acid is also added thereto.
A suitable colouring matter may also be added to these solutions.
The walls of the house, during dry weather, are first coated with the thick solution,
and, when the latter is thoroughly dry, the other solution is applied.
Water runs off walls thus coated like it does off sheets of glass without rendering
them damp.
The appearance of the coated stones does not change at all, and they are thus
prevented from becoming dirty.
Dated this 1st day of June 1891.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.

page_text: Improved Process and Compositions for Coating Walls or similar
Surfaces to Prevent the Penetration of Damp.
A communication from abroad by JOHANNES PETRUS VAN BALGOOY, of Weert,
in the Province of Limbourg and Kingdom of Holland, Engineer.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool and 6, Bank Street, Man-
chester, both in the County of Lancaster and 323 High Holborn, 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 :-
This invention relates to a process for the manufacture of chemical preparations
with which walls of houses are coated for the purpose of preventing damp from
penetrating.
In localities where the rainfall is large, or even where houses are exposed without
shelter to bad weather, the damp makes itself felt in a very disagreeable manner,
the wall papers and the plaster do not adhere in the rooms, and even the masonry
is damaged by the frost, etcetera.
In order to remedy these drawbacks in very damp-places, there is no other
remedy than to coat the house with plates of zinc or even with wooden shingles in
such a way that there exists an insulating layer of air between the walls and the
covering..
The method in any case is very costly and destroys any architectural beauty.
Another known method of protection against damp is by means of tar, which
can only be rarely employed, because of its black colour and its disagreeable
odour..
This new process consists in first coating the wall with a thick solution and
then with a thin solution, which thus form a covering into which water cannot
penetrate.
The first solution is composed of stearine, saponified with caustic potash, of acetic
acid and of salicylic acid. In preparing this first solution, about five parts of the
"stearine, saponified with caustic potash, are mixed with about two parts of acetic
acid, one part more or less of salicylic acid, and about ninety-two parts of water.
These substances are heated in water up to boiling point. The mixture is then
allowed to cool and is ready to be applied as hereinafter described. A little phenic
acid may be added thereto to destroy the unpleasant odour of the soap.
The thin solution composed of alum or chloride of calcium and salicylic acid
diluted with water. In preparing this thin solution, the proportions should also be
preferably about seven and a half parts of the alum or chloride of calcium, one half
part of salicylic acid and ninety two parts of water, and a little phenic acid also
'may be added thereto.
A suitable colouring matter may also be added to these solutions.
The walls of the house, during dry weather, are first coated with the thick
solution, and, when the latter is thoroughly dry, the other solution is applied.
Water runs off walls thus coated like it does off sheets of glass without rendering
them damp.
The appearance of the coated stones does not change at all, and they are thus
prevented from becoming dirty.

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, as communicated to me
by my foreign correspondent, I declare that what I claim is-
1. The improved compositions for coating walls or similar surfaces to prevent the
penetration of damp which consist essentially of;
(a) A composition of saponified stearine, acetic acid and salicylic acid, prepared
as described, and
(b) A composition of alum or chloride of calcium and salicylic acid, prepared as
described.
2. The improved process for coating walls or similar surfaces to prevent the
penetration of damp, which consists in first applying to the surface to be coated a
covering of the composition (a), Claim 1, and subsequently applying on top of that
a covering of the composition (b), Claim 1, all substantially as hereinbefore set
forth.
Dated this 24th day of February 1892.
WM. P. THOMPSON & Co.,
Agents for the Applicant.