Improvements in and relating to Shading and Colouring Glass and other Materials.
Year: 1896

page_text: Date of Application, 11th June, 1896-Accepted, 11th July, 1896
COMPLETE SPECIFICATION.
Improvements in and relating to Shading and Colouring Glass and
other Materials.
We, BENJAMIN ALBERT KNAPPETT of Percy Villa, Perry Hill, Catford,
Sanitary Engineer, and JAMES FREDERICK CHARLESWORTH of 79 Rushy Green,
Catford, Sanitary Engineer, both in the County of London, 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 improvements in and relating to shading and colouring
glass and other materials, and our invention consists in an improved compound
made up of ingredients substantially as hereinafter set out.
Our improved compound consists of wheaten or other suitable farinaceous flour,
common starch, ground alum, Sanitas powder, or other suitable disinfectant and
any suitable colouring matter.
The flour and starch-either in equal quantities, or, say two parts of the former
to three parts of the latter-are mixed in any well known manner, and to every
pound of such mixture we add half an ounce of ground alum, and one ounce of
"Sanitas" powder or other suitable disinfectant. The compound may then have
added to it any suitable colouring matter, such for example as whitening or ground
chalk if a shading only be desired or any other colouring matter according to the
effect or colour desired.
In using our improved compound it is only necessary to make it into a paste of
suitable consistence with a sufficient quantity of cold or warm water, 1 gallon of
boiling water being afterwards added, the whole then forming a thick liquid, said
liquid being readily applied to the transparent glass or other material by means of
a brush and then stippled with a dry dusting brush, or a stippler" may be used
for best effects. Our compound can be applied cold as well as hot.
If desired, the article coated or treated with our improved compound may be
varnished, so as to render the compound washable and not liable to be readily
rubbed off, and also to give the glossy effect of cathedral glass.
Our improved compound is not materially affected by rain, whilst it can be
readily removed from the glass by washing, and, further, our improved compound
does not deteriorate if kept in a dry state, and will, even if liquefied, keep for a
considerable period of time without deterioration.
We wish it to be understood that we do not confine the use or application of our
improved compound to any particular material but it will be found useful for
coating windows or glass panels, studios, conservatories, glass partitions, and such
like. It will also be found useful for ornamenting glass or other surfaces by means
of stencil plates, and our improved compound enables transparent glass to be used
for many purposes for which stained ground and shaded glass are required.
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 :-
1. A compound consisting of farinaceous flour, starch, ground alum, and a
disinfectant for the purposes and substantially as set forth.
2. A compound consisting of equal quantities of farinaceous flour and starch
and having half an ounce of ground alum and one ounce of "Sanitas" powder
added to every pound of such mixture substantially as set forth.

page_text: 3. A compound consisting of wheaten flour, starch, ground alum and "Sanitas"
powder in the proportions substantially as stated and having added to it a
sufficient quantity of colouring matter all for the purposes and set forth.
Dated this 11th day of June 1896.
BENJAMIN A. KNAPPETT,
JAMES F. CHARLESWORTH,
By their Agents, Horn, Son & Co.,
151 Strand, next to Somerset House, London.
BENJAMIN A. KNAPPETT,
JAMES F. CHARLESWORTH,
By their Agents, Horn, Son & Co.,
151 Strand, next to Somerset House, London.