AN IMPROVED COMPOUND FOR PLASTERING OR STUCCO WORK
Year: 1884

page_text: I HENRY HARRIS LAKE of the firm of Haseltine Lake & C° Patent Agents
Southampton Buildings London in the County of Middlesex do hereby declare the
nature of said Invention for "AN IMPROVED COMPOUND FOR PLASTERING OR
STUCCO WORK" to be as follows :-
The object of this Invention to furnish an improved plastering compound
designed for a finishing coat in rooms, and for ornaments, mouldings, statuary and
the like. This compound is colored uniformly throughout, and hence requires no
subsequent labor, time and material in tinting the surface, nor is it discolored and
defaced by scratches on the surface, like ordinary tinted walls. It may also be
made water-proof so as to be uninjured by repeated washings, or by steam.
My improved composition consists of the following ingredients in about the
proportions named below, that is to say-I take, by measure, one part of air-
slacked lime; one half of a part of fine sand; from one half to two thirds of a
part of rice-flour; and one fourth of a part of fine salt if beach sand is used,
otherwise one half of a part.
These I mix dry, with the desired coloring matter, preferably dry aniline colors,
being careful to make the mass homogeneous by thoroughly mixing its elements to
ensure uniformity of color and avoid streaks.
When about to be applied to the wall or other surface I render the mass plastic
by adding sufficient weak glue in which has been dissolved, while boiling, from ten
to twelve grains of bi-chromate of potash to each quart of the liquid, for the
purpose of rendering the finished surface water-proof. When the liquid is added,
the whole is stirred so as to effectually moisten all the ingredients, and intimately
incorporate them into one mass of uniform consistency and color. It is then
spread over the foundation coat with the trowel, in the same manner as any fine
plaster.
Walls finished with my compound may be frescoed either in oil or water colors,
as readily as ordinary walls.

page_text: For stucco or other fine work I sometimes substitute plaster of Paris for the lime
and reduce somewhat the proportion of sand and salt, while retaining the full
percentage of rice-flour. Less coloring matter is needed than when lime is
employed.
The elements are mixed and stirred with the weak glue as already described,
adding the bi-chromate of potash as stated, when it is desired in either case to
make the surface waterproof.
Deted this 1st day of January 1001.
HASELTINE, LAKE & Co.,
For the Applicant.

page_text: I HENRY HARRIS LAKE of the firm of Haseltine, Lake & Co, Patent Agents,
Southampton Buildings London in the County of Middlesex, do hereby declare
the nature of said Invention for "AN IMPROVED COMPOUND FOR PLASTERING
OR STUCCO WORK" 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 an improved plastering compound, designed for a
finishing coat in rooms, and for ornaments, mouldings, statuary and the like. This
compound is colored uniformly throughout, and hence requires no subsequent
labor, time and material in tinting the surface, nor is it discolored and defaced by
scratches on the surface, like ordinary tinted walls. It may also be made water-
proof so as to be uninjured by repeated washings, or by steam.
The improved composition consists of the following ingredients in about the
proportions by measure named below, that is to say one part of air-slacked lime;
one half of a part of fine sand; from one half to two thirds of a part of rice-flour;
and one fourth of a part of fine salt if beach sand is used; otherwise one half of
a part. These ingredients I mix dry with the desired coloring matter, preferably
dry aniline colors, being careful to make the mass homogeneous by thoroughly
mixing its elements to ensure uniformity of color and avoid streaks.
When about to be applied to the wall or other surface I render the mass plastic
by adding sufficient weak glue, in which has been dissolved, while boiling, from ten
to twelve grains of bi-chromate of potash to each quart of the liquid, for the
purpose of rendering the finished surface water-proof. When the liquid is added,
the whole is stirred so as to effectually moisten all the ingredients, and intimately
incorporate them into one mass of uniform consistency and color. The compound
is then spread over the foundation coat with the trowel, in the same manner as
any fine plaster.
Walls finished with this compound may be frescoed either in oil or water colors,
as readily as ordinary walls.
For stucco or other fine work I sometimes substitute plaster of Paris for the
lime, and reduce somewhat the proportion of sand and salt, while retaining the
full per centage of rice-flour. Less coloring matter is needed than when lime is
employed.
The elements are mixed and stirred with the weak gluo as already described,
adding the bi-chromate of potash as stated, when it is desired in either case to
make the surface water-proof.
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
The compound herein described, for plaster or stucco work, consisting of rice-
flour, sand, salt, and lime or plaster of Paris, mixed with weak glue and
compounded together, in the proportions substantially as stated.
HASELTINE, LAKE & Co.,
For the Applicant.