Improvements in the Production of Variously Coloured Designs, Drawings, or Pictures on Porcelain, Glass, or Ceramic Objects.
Year: 1893

page_text: Date of Application, 14th Aug., 1893
Complete Specification Left, 26th Feb., 1894-Accepted, 31st Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Production of Variously Coloured Designs,
Drawings, or Pictures on Porcelain, Glass, or Ceramic Objects.
We, MAX ROSENTHAL, Porcelain Manufacturer, and RICHARD WALTER,
Artist, both of 965 Berggasse, Asch, Bohemia, in the Empire of Austria, do
hereby declare the nature of this invention to be as follows:-
Hitherto in the production of variously coloured designs, drawings or pictures
on porcelain, glass or ceramic objects, it has been the practice to apply each colour
separately by means of a printing apparatus and with this method every colour
required a separate impression and had a separate stone or plate. This method is
costly and also requires a considerable time for its carrying out and can therefore
only be used for very large impressions.
The object of our invention is to provide an easy and cheap method, and one
which occupies only a short time, for the production of variously coloured designs,
pictures, &c. on porcelain, glass, or other ceramic objects.
In carrying out our invention the drawing is printed on the article in the usual
way. A dead colour is employed as an ingredient of the adhesive material,
whether it is varnish or lacquer, which is used for the printing. This dead
colour may be, for instance, white porcelain colour, or any other colouring matter
which disappears on the baking of the object, such, for instance, as mineral colour
and lampblack.
This ingredient has for its object the making of the adhesive material suitable
for printing, the rendering of the picture distinctly on the article, and yet, as
mentioned above, it disappears when the article is baked.
When the picture or design is printed or rolled on the object, the separate
portions thereof are dusted with finely powdered, dry porcelain colour by means of
a brush, comparison being made with a coloured pattern.
This method is very simple, and does not require a great amount of practice. It
cau well be carried out by young female workers. The workgirl has the object,
with the design already printed on it, in front of her; she takes the colours-for
instance from 6 bowls, which contain each a different colour and a brush-and
transfers the same to the article one after the other, without paying regard to sharp
outline and contour as this running into one another of the colours gives a very
delicate shading which cannot be obtained by another method.
The article is then cleaned with a large brush, or feathers, wadding, &c. in order
to remove the colour which does not adhere to the drawing.
The object is then baked and the article is ready.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in the Production of Variously Coloured Designs,
Drawings, or Pictures on Porcelain, Glass, or Ceramic Objects.
We, MAX ROSENTHAL, Porcelain Manufacturer, and RICHARD WALTER,
Artist, both of 965, Berggasse, Asch, Bohemia, in the Empire of Austria, do
hereby declare the nature of this invention and in what manner the same is to be
[Price 81.1

page_text: performed, to be particularly described and ascertained in and by the following
statement:—
Hitherto in the production of variously colored designs, drawings or pictures
on porcelain, glass or ceramic objects, it has been the practice to apply such color
separately by means of a printing apparatus and with this method every color
required a separate impression and had a separate stone or plate. This method is
costly and also requires a considerable time for its carrying out and can therefore
only be used for very large impressions.
The object of our invention is to provide an easy and cheap method, and one
which occupies only a short time for the production of variously colored designs,
pictures, etc. on porcelain, glass or other ceramic objects.
In carrying out our invention the drawing is printed on the article in the usual
way. A dead color is employed as an ingredient of the adhesive material, whether
it is varnish or lacquer, which is used for the printing. This dead colour may
be, for instance, white porcelain color, or any other coloring matter which
disappears on the baking of the object, such for instance, as mineral colour and
lampblack.
This ingredient has for its object the making of the adhesive material_suitable
for printing and the rendering of the picture distinctly on the article, and yet as
mentioned above, it disappears when the article is baked.
When the picture or design is printed or rolled on the object, the separate
portions thereof are dusted with finely powdered, dry porcelain color by means of
a brush, comparison being made with a colored pattern.
This method is very simple and does not require a great amount of practice. It
can well be carried out by young female workers. The work-girl has the object
with the design already printed on it, in front of her; she takes the colors (for
instance from six bowls, which contain each a different color and a brush) and:
transfers the same to the article one after the other, without paying regard to
sharp outline and contour as this running into one another of the colours gives a
very delicate shading which cannot be obtained by another method.
The article is then cleaned with a large brush, or feathers, wadding, etc. in order
to remove the color which does not adhere to the drawing. The object is then
baked and the article is ready.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that
what we claim is :--
1. A method of producing variously coloured designs, drawings or pictures on
porcelain, glass or other ceramic objects, by first impressing, in a known manner,
the drawing of the design on the article by means of an adhesive material which
leaves the drawing visible and then dusting the same, by hand, with the various
desired colors which are to be burnt in, the colour which does not adhere being
removed and the article then baked, substantially as hereinbefore described.
2. Porcelain, glass or ceramic objects provided with ornamentation produced by
the process claimed in Claim 1.
Deted the 26th day of February 1904
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.