Process for Ornamenting Objects of Metal, Porcelain or the like by Photography.
Year: 1896

page_text: Date of Application, 6th July, 1896
Complete Specification Left, 5th Apr., 1897-Accepted, 3rd July, 1897
PROVISIONAL SPECIFICATION.
A Process for Ornamenting Objects of Metal, Porcelain or the like
by Photography.
I, THEODOR HÄUSERMANN, of VIII. Bennogasse 3, Vienna, Austria, Manufacturer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to a process for ornamenting objects of metal, porcelain or
the like, the objects being provided with a coating of chrome glue and exposed to the
light and heated to about 300°-400° C. If some parts are to be undyed, these are
protected from light by covering them.
The drawings or ornaments are produced by exposure to light of a negative or
template pattern of the desired drawing.
At first the object is provided with a coating sensitive to light, for example chrome
glue, then it is exposed to the light, either the whole surface or the part which is not
covered; then the parts which are not fixed are removed by washing.
The fixed, but still colourless, parts of the object may then be treated with a solu-
tion of water colour (anilin) in order to make them more visible.
This is, however, not essential, it serves only to facilitate the correction and repair
of the drawing.
Finally after the coating has been dried, it is heated to 300°-400° C., preferably
by a gas heater, whereby the surface is dyed brown to black.
For obtaining the light sensitive composition I prefer the following proportions:
100 cub. cent. of distilled water.
60 to 80 grammes of fish glue or isinglass.
3.3 grammes of ammonium bichromate.
1.3 grammes of chrome alum.
4.7 cub. cent. of ammonia of specific gravity 0.914.
4.7 cub. cent. of alcohol.
This mixture is made by dissolving successively with constant stirring.
60 to 80 grammes of isinglass with 40 cub. cent. of water.
3.3 gramines of ammonium chromate with 40 cub. cent. of water.
1.3 grammes of chrome alum with 20 cub. cent. water.
and, while constantly stirring, adding by drops alcohol and ammonia.
The proportions of the ingredients mentioned may be varied at will, and for some
of the ingredients may be substituted equivalents.
Dated this 6th day of July 1896.
COMPLETE SPECIFICATION.
Agent for the Applicant.
A Process for Ornamenting Objects of Metal, Porcelain or the like
by Photography.
I, THEODOR HÄUSERMANN, of VIII. Bennogasse 3, Vienna, Austria, Manufacturer,
do hereby declare the nature of this invention, and in what manner the same is to be
[Price 8d.]
A Process for Ornamenting Objects of Metal, Porcelain or the like
by Photography.
I, THEODOR HÄUSERMANN, of VIII. Bennogasse 3, Vienna, Austria, Manufacturer,
do hereby declare the nature of this invention, and in what manner the same is to be
[Price 8d.]

page_text: performed, to be particularly described and ascertained, in and by the following
statement :-
This invention relates to a process for ornamenting objects of metal, porcelain or
the like by photography, the objects being provided with a coating of chrome-glue
and exposed to the light and heated to about 300°-400° C. If some parts are to be
undyed, these are protected from light by covering them.
The drawings or ornaments are produced by exposure to light of a negative or
template pattern of the desired drawing.
At first the object is provided with a coating sensitive to light, for example chrome
glue, then it is exposed to the light, either the whole surface or the part which is not
covered; then the parts which are not fixed are removed by washing.
The fixed, but still colourless, parts of the object may then be treated with a
solution of water colour (anilin) in order to make them more visible.
This is however not essential, it serves only to facilitate the correction and repair
of the drawing.
Finally after the coating has been dried, it is heated to 300°-400° C, preferably
by a gas heater, whereby the surface is dyed brown to black.
For obtaining the light sensitive composition I prefer the following proportions:
100 cub. cent. of distilled water.
60 to 80 grammes of fish glue or isinglass.
3.3 grammes of ammonium bichromate.
1.3 grammes of chrome alum.
4.7 cub. cent. of ammonia of specific gravity 0.914.
4.7 cub. cent. of alcohol.
This mixture is made by dissolving successively with constant stirring,
60 to 80 grammes of isinglass with 40 cub. cent. of water.
3.3 grammes of ammonium chromate with 40 cub. cent. of water,
1.3 grammes of chrome alum with 20 cub. cent. water,
and, while constantly stirring, adding by drops alcohol and ammonia.
The proportions of the ingredients mentioned may be varied at will, and for some
of the ingredients may be substituted equivalents.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is :-
A process for dyeing or ornamenting objects of metal porcelain and the like in
colours from brown to black, consisting in coating such objects with chroine glue,
then exposing the same to light by the aid of a negative or template pattern, and,
after washing, heating the objects to from 300° to 400° C., substantially as described.
Dated this 5th day of April 1897.
ABEL & IMRAY,
Agents for the Applicant.