Improvements in Drawing and Writing Games.
Year: 1890

page_text: Date of Application, 10th Feb., 1890
Complete Specification Left, 15th Aug., 1890-Accepted, 20th Sept.. 1890
PROVISIONAL SPECIFICATION.
Improvements in Drawing and Writing Games.
I, FIDELIUS TSCHOFEN, of Rother Hof 8 in the City of Vienna, in the Empire
of Austria, First Lieutenant, do hereby declare the nature of my invention of
"IMPROVEMENTS IN DRAWING AND WRITING GAMES," to be as follows:-
-
My invention relates to improvements in drawing and writing games and consists
of a novel, entertaining and instructive game which can be adapted to any age and
degree of education and also used as a social game for adults.
The nature of my improved game consists therein that by rubbing the prepared
paper or the like with coloured pencils or crayons or with coloured powder, parts,
text or picture, which previously were not or scarcely visible will appear whilst the
colour will have no effect on the remaining smooth part and will leave no trace
behind. In this manner a multifold application of this game can be produced, such as
pictures with or without text, replies to visible questions, completing visibly printed
text or pictures and the like.
This game consists therein that rough lines, outlines pictures, words and the like
are made in or on smooth surfaces on which coloured crayons or powder leave no
trace and then graphite, gold, silver or bronze powder or other appropriate powder.
rubbed into the rough parts.
The employment of glazed paper on which the rough lines are produced by a
mixture of finely powdered chalk, water and gum arabic has been found very advan-
tageous, but any colourless ink or solution of a colour corresponding with the colour
of the paper employed and provided with an adhesive material can be employed. The
material, glazed paper or other suitable material, is provided with text or drawing
which need no further explanation.
The production of the rough lines by erasing or etching in smooth surfaces does
not appear so recommendable as the aforementioned process in consequence of the
difficulty of producing same. Sheets produced in such manner can be operated on
with coloured or other crayons or powder.
Dated this 10th day of February 1890
W. P. THOMPSON & BOULT,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Drawing and Writing Games.
I, FIDELIUS TSCHOFEN, of Rother Hof S, in the City of Vienna, in the Empire
of Austria, First Lieutenant, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and ly the following statement :-
This invention relates to a novel, entertaining and instructive game which may be
played by children of any age and of any degree of education and which can also
serve as an amusing game for adults.
The game is played by rubbing a sheet of paper or other material having an
invisible or practically invisible design produced thereon, with a coloured crayon or
with coloured powder, in order to cause the design to appear, the colour having no
effect on the other parts of the sheet.
The invisible designs are produced on a smooth sheet by roughing certain parts of
the same so that pulverized colour or the colour of a crayon will adhere to the
roughened parts.
In practice I find it advantageous to use colourless glazed paper and to produce the

page_text: roughness by means of colourless ink composed of whiting and gum arabic; other
suitable materials, either plain or coloured may, however, be employed instead of
paper, and any other colourless ink may be used. When the designs are on coloured
surfaces, the colour of the ink should correspond with that of the paper on which the
design is produced, a suitable adhesive substance being always used for fixing the ink
on the sheet.
The design can be impressed on the sheet either by hand or by other suitable
means.
It is obvious that the sheets for playing the game admit of various modifications,
that is to say, the designs may consist of pictures with or without text, of replies to
visible questions or of incomplete pictures or text which can be completed by rubbing
them with pulverized colour or coloured crayons, and that the colours in which the
designs are re-produced may be varied according to desire.
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. The method of producing designs on smooth or glazed surfaces of paper or other
suitable material by means of invisible or nearly invisible ink, or of ink coloured to
correspond with that of the surface to which it is to be applied, such designs being
rendered visible by rubbing them with coloured crayons or pulverized colours, sub-
stantially as herein before described, for the purpose specified.
2. The new kind of game consisting in rubbing sheets of paper or other material
having invisible or practically invisible designs produced thereon in the manner
hereinbefore described, with coloured crayons or powder so as to render such designs
visible.
Dated the 15th day of August 1890.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.