to be Used for Etching.
Year: 1885

page_text: to be Used for Etching.
I LORENTZ ALBERT GROTH K.G.V. Civil Engineer and Proprietor of the
Patent Industrial and Financial Agency 30 Finsbury Pavement London E.C. do
hereby declare the nature of said invention for A NEW OR IMPROVED METHOD OK
DRAWING OR PRODUCING DESIGNS TO BE
"
"
USED FOR ETCHING a communication*
to me from abroad by Dr Eugen Albert, in the City of Munich in the Kingdom
of Bavaria, in the German Empire to be as follows:-
}
A good etching requires not only artistic genius but also perfect skill in technical.
manipulation in which difficulties often arise and discourage the artist.
By this invention the technical difficulties are superseded, allowing the artist to
spend all his time on the drawing alone while it requires no costly and difficult
copper engraving, and the artist can judge the effect of his work at any moment:
without waiting till a copy on paper is obtained.
The surface of the plate on which the design is to be produced is preferably
made of a mixture of asphalte and wax thus presenting a black appearance, over
which a light coat of white colour is spread.
This white colour I prefer to make from chalk mixed with collodium whereby
the sharpest lines can be made without risking the breaking or scaling off of the
colour, as the ether in the collodium is a binding medium for the chalk while
keeping the wax on the plate in a soft condition.
By producing designs on such a plate coated in this manner each stroke of the
graver seems a black mark on white ground.
In this way the lines are distinct and can be photographed or transferred in the
usual way being on a white ground.

page_text: COMPLETE SPECIFICATION.
A New or Improved Method of Drawing or Producing Designs
to be Used for Etching.
•
I LORENTZ ALBERT GROTH K.G.V. Civil Engineer and Proprietor of the
Patent Industrial and Financial Agency 30 Finsbury Pavement London E.C. do
hereby declare the nature of said invention for "A NEW OR IMPROVED METHOD OF
DRAWING OR PRODUCING DESIGNS TO BE USED FOR ETCHING " a communication
to me from abroad by Dr Eugen Albert in the City of Munich in the Kingdom of
Bavaria in the German Empire, and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement:-
A good etching requires not only artistic genius but also perfect skill in technical
manipulation in which difficulties often arise and discourage the artist.
By this invention the technical difficulties are superseded allowing the artist to
spend all his time on the drawing alone, while it requires no costly and difficult
copper engraving and the artist can judge the effect of his work at any moment
without waiting till a copy on paper is obtained.
The surface of the plate on which the design is to be produced is covered with
black material preferably made of a mixture of asphalte and wax thus presenting
a black appearance over which a light coat of white colour is spread.
This white colour I prefer to make from chalk mixed with collodium whereby
the sharpest lines can be made by the graver without risking the breaking or
scaling off of the colour, as the ether in the collodium is a binding medium for the
chalk while keeping the wax on the plate in a soft condition.
By producing designs on such a plate coated in this manner each stroke of the
graver seems a black mark on a white ground.
In this way the lines are distinct and can be easily photographed or transferred
in the usual way being on a white ground.
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 preparation of a plate covered, first with a black surface preferably a
mixture of asphalte and wax, and second with a light coat of white colour,
preferably chalk mixed with collodium, for producing drawings, designs, and such
like upon, by means of an etching graver.