Year: 1894

page_text: Date of Application, 31st Oct., 1871
Complete Specification Left, 31st July, 1895-Accepted, 31st Oct.. 1895
A communication to me from WILHELM ANTONY, Painter and Merchant, of
Trier, in the Empire of Germany.
I, EDMUND EDWARDS, of the Firm of Edwards and Co., Patent Agents and
Engineers, of 65 and 66, Chancery Lane, in the County of Middlesex, do hereby
declare the nature of this invention to be as follows:-
The present invention has for its object, a board or surface adapted for marking,
writing, or making designs for the purpose of teaching in schools and the like, the
improved board being so constructed that its surface is much better adapted for
good and quick writing or drawing than the painted boards heretofore ordinarily
used for the purpose. The improved board consists of a plate of artificial stone,
paper, or wood, fitted in a frame, and having both sides provided with a coating of
celluloid, or hard rubber or the like, which is used as the surface to receive the
writing or drawing.
The construction of the "board" is effected as follows:-A wood or other
frame of suitable size has stretched and fixed upon one side a sheet of wire gauze,
and is laid with the gauze downward upon a flat surface, and is then filled in with
a filling of suitable material such as wood, infusorial earth, cement and water
glass, or other such substance, with which the frame is completely filled.
The other side or back of the frame is then also covered with a sheet of wire
gauze, and the whole is submitted to pressure and is then allowed to dry.
The improved board so prepared has then applied to it on both sides by cementing,
an opaque plate or covering of celluloid, hard rubber, or the like, which forms the
surface to receive the writing or drawing, and may be of any colour, or may have
different coloured guiding lines upon it. For instance, black surfaces may have
blue, red, or other coloured lines upon them.
Instead of opaque celluloid surfaces with such lines upon them, they may be of
transparent celluloid (or other transparent material, such as mica). On the back
of these the desired lines (or other designs) may be drawn in suitable colours, or
sheets of paper similarly marked or printed may be applied to them. The celluloid
or other plate is then fitted and fixed by cement or other equivalent means, with
its marked side, or that upon which such paper is fixed, upon a block of artificial
stone, paper, pasteboard, or the like, as already described.
The lines or designs thus prepared are readily visible, and do not interfere
with the writing or drawing upon the front, and are not affected by the constant
cleaning or wiping of the board.
1
1
1004

page_text: Improvements in Black-boards and the like for Teaching.
I, EDMUND EDWARDS, of the Firm of Edwards and Co., Patent Agents and
Engineers, of 65 and 66, Chancery Lane, in the County of Middlesex, 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, and accompanying drawing, that is to say :-
The present invention has for its object a board or surface for walls, or carried
by suitable articles of furniture, and adapted for marking, writing, or making
designs, the improved board or surface requiring no preparation, and being so
constructed that its surface is much better adapted for good and quick writing and
drawing, than the painted boards ordinarily heretofore used for the purpose.
In order to put the invention in operation, a plate, capable of resisting damp
from either the inner or the outer side, is prepared of wood, artificial stone, paper,
metal, or other suitable material or combination of materials, and is coated with
celluloid or hard rubber, or the like, the whole being then dried at a high
temperature. This coating is hard and transparent and allows any lines, drawings,
mineral and metal mosaic and imitations of different kinds to be seen through it;
and it can be polished or roughened, or coloured by mixing with it colours,
pulverized minerals and metals.
In the accompanying drawing, which is in illustration of the invention;
Figure 1 is a front view, with the writing surface and foundation plate partly
removed,
Figure 2 is a section through x-x, Figure 1.
Figure 3 shews a section of a writing or drawing board, with a wooden support a¹
for the outer writing surface.
The preparation of the improved compound board by the use of a solid foundation
of the kind described, is effected as follows.
A frame a of suitable size is covered on one side with a sheet of wire gauze b,
and this side is laid upon a flat surface, and the frame is then filled with a mixture
of wood fibre, infusorial earth, cement and water glass, or other equivalent
materials, the frame being entirely filled with the mixture, which is then subjected
to sufficient pressure. The upper side of the frame a so filled then also has fitted
and fixed to it a sheet of wire gauze &, so that the entire mass c is enclosed at its
edges by the frame and at its sides by the wire gauze.
The whole is now submitted to sufficient pressure and is then dried.
The compound board so enclosed has then cemented on both sides the plates d, d¹,
composed of the already described ingredients, which form the writing or drawing
surfaces. These can be made of different colours and may have upon them different
coloured lines to aid as guides in writing or drawing. For instance, black surfaces
with red lines, or white ones with red, blue, or other coloured lines, may be used.
Instead of plates with lines upon their surface, transparent ones may be used,
on the back of which the lines, or designs are formed, by painting with suitable
colours, or by cementing upon them sheets of paper carrying the lines or designs,
or by printing or other suitable means. The transparent plate is then attached or
cemented to a plate of artificial stone, paper, papier mache, prepared as above
described, or wood, with that side inwards upon which the design has been painted
or the paper attached as described.
The lines or designs are easily visible through the transparent writing or
drawing surface, and do not interfere with the writing or drawing upon the front,
and are not affected by the frequent cleaning and wiping of the board.

page_text: 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 plate forming the writing or drawing surface b, or b¹, fitted upon the
foundation board, substantially as described and illustrated.
2. The colouring of the plate described in Claim 1 with different colours, by a
mixture of colours, pulverized minerals and metals, substantially as described.
Dated this 30th day of July 1895.
EDWARDS & Co.,
65 and 66, Chancery Lane, London, Agents for the Applicant.