Surfaces of Plastering Work
Year: 1885

page_text: Surfaces of Plastering Work.
RICHARD WARWICK Plasterer and builder 8 Beal St. North Plaistow, Essex
County, England, do hereby declare the nature of the herein described invention
for IMPROVEMENTS IN COLOURING AND PERMANENTLY DECORATING SURFACES OF
PLASTERING WORK, to be as follows:-
A colour or colours or pigments are mixed togather (one or all of said colours
or pigments to be of such kind to fade or die at the application of a burning caustic)
these pigments to be mixed with the material with which the plastering work is
to be executed a pattern or design is permanently affixed to the surface of said
plastering by applying a chemical caustic either by ordenary method of stencilling
or otherwise. In the case of cast moulded or modelled ornament the same described
mixture of pigments may be adopted (or otherwise applied to surface) the casts
of ornament are variegated by application of said caustic producing an effect
somwhat resembling faïence ware.
Colouring matter is mixed with stucco stuff, or material employed to render the
finished coat or surface of plastering work.
A design or pattern is permanently affixed to same surfaces (of whatever form)
by the application of chemical burning caustic either by the well known method or
process of stencilling or otherwise.
For instance if a pattern or design is required to be executed in two shades of
(say) blue two different kinds of blue pigments or colouring matter would be mixed
with the stucco or cement with which the surface (to be further decorated) would
be wrought or worked or otherwise executed.
To produce the pattern or design upon the said surface permanently I take any
kind of chemical caustic and apply to desired form upon the said prepared surface,
in this case the result would be a pattern or design in light and dark blue or
monochrome by reason of a certain portion of the colouring matter used in the
matrix or stuff to produce the surface to be decorated, fading or dying out at the
parts of said surface where the said caustic has been applied and only that portion
of the blue colouring matter remaining that stands or does not fade at the
application of the caustic, the two different kinds of pigments used in this
instance would be of vegetable and mineral kinds respectively although not
necesesarily so in all designs or patterns desired to be produced.

page_text: Other coloured designs or patterns are produced in the foregoing described manner
different pigments or colouring matter being employed according to the colour of
the said surfaces desired, the pattern or design desired, being affixed or executed
upon said prepared surface in the same way or by same method or process as herein-
before described. And thus exactly smooth or flush surfaces with decorative
designs affixed are obtained one advantage claimed in this invention.
In the case of moulded or cast ornamental surfaces the colouring matter is mixed
into the matrix, plaster of paris, cements or compositions, or otherwise applied to
surfaces and to further decorate the same the caustic is applied to desired parts of
said moulded surfaces and thus said surfaces are permanently variegated and are
sharp and cleare in the relief (somewhat resembling faïence ware) and do not
require to be further coloured or painted with brush the object of this latter
mentioned part of this invention being to obviate putting on colour or paint which
destroys the delicate parts of the ornament an advantage in the ornamental
department of plastering.
What I claim as my invention is the decorating of plastering work more
permanently and novel in manner by producing designs or patterns or forms upon
coloured surfaces of plastered work (either plain faces or moulded) said patterns or
designs being produced or executed by the process or method as herein described
with chemical caustics or acids all for the purposes as herein set forth.
Improvements in Colouring and Permanently Decorating
Surfaces of Plastering Work.
I, RICHARD WARWICK Plasterer and builder of 120 Tilbury Road Plaistow County
of Essex England, do hereby declare the nature of my invention for IMPROVEMENTS
IN COLOURING AND PERMAMENTLY DECORATING SURFACES OF PLASTERING WORK
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:—
Colouring matter is mixed with or into the stuff or material with which the
surfaces desired to be decorated permanently are to be finished whether said
surfaces are of plain or flush or moulded form. Patterns or designs are affixed
upon or into the said surfaces of plastered work thus prepared by the application
of caustic material of a burning nature The said patterns or designs may be first
drawn marked stamped or otherwise indicated upon the said surfaces or by use of
ordinary stenciling process the result of the application of the caustic to the
surfaces will be that the part or parts of said surfaces that receive the touch of the

page_text: caustic will be changed in colour to a certain depth into the face or surface and
thus the patterns or designs are permanently affixed upon or into the said prepared
surfaces as an inlay or mosaic. So far relates to smooth or flush surfaces. In
decorating the surfaces of moulded or modelled forms what is technicaly called
cast work the use of a stencil may not be required as in most casted forms the
patterns or designs will be indicated by the impression received by or from the
mould from which the said moulded or modelled form has been made or cast. In
this case namely of casting ornamental forms in "plaster of paris" cement 'or
composition the same having colouring matter mixed in the matrix To further
decorate the surfaces of said cast forms the caustic is applied to the parts desired
and thus the said cast ornaments are permanently varegated in colour by a portion
of before said colouring matter which had been mixed in the matrix or stuff used
to form the cast ornament being changed to different colour by application of said
burning caustic to parts desired to be varegated Said ornamental forms or casts
when shined or polished by a well known process will resemble faience ware.
I am fully aware that colours are used in certain description of plaster work
decoration but I am not aware of the use of caustic for purposes of producing
permanent designs in the manner I claim namely by changing of the colours by
caustics which is a novel manner of producing inlay.
Having now particularly decribed 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 permanently decorating of surfaces of plaster or plastering work of all kinds
by affixing into or upon such said surfaces designs or patterns in one or more
colours by the use and application of burning caustics as herein described all for
the purposes as herein set forth.