Improvements in School Slates to Facilitate the Practice of Drawing.
Year: 1891

page_text: Date of Application, 30th Dec., 1891
Complete Specification Left, 2nd Sept., 1892-Accepted, 8th Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in School Slates to Facilitate the Practice of
Drawing.
CHARLES EDMUND ERNEST CLARK 24 Iffley Road Hammersmith Middlesex
Schoolmaster do hereby declare the nature of this invention to be as follows:-
This invention relates to means for facilitating the practice of drawing on slates
by fixing in any desirable manner one side of the slate level with the frame; and
possesses the following advantages:-
-
(a) It does away with the obstruction to the free use of the ruler and set
quare,
(b) It gives more freedom to the wrist in freehand drawing,
(c) It does away with the temptation to use the inside of frame as a guide to the
hand,
(d) And hence is more similar to a sheet of paper than present slates.
COMPLETE SPECIFICATION.
Improvements in School Slates to Facilitate the Practice of
Drawing.
I CHARLES EDMUND ERNEST CLARK of 24 Iffley Road Hammersmith Middlesex
Schoolmaster, 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 :-
This invention relates to means for facilitating the practice of drawing on slates
by fixing in any desirable manner one side of the slate level with the frame and
possesses the following advantages.
It
It does away with the obstruction to the free use of the ruler and set square.
gives more freedom to the wrist in freehand drawing. It does away with the
temptation to use the inside of frame as a guide to the hand and hence is more
similar to a sheet of paper than present slates.
In the accompanying drawings
Fig. 1 is a plan of my improved slate showing its plane surface.
Fig. 2 is an edge view of one end of the slate and
Fig. 3 a cross section on line x x of Fig. 1.
According to my invention the longitudinal bars F. F. of the wooden frame in
which the slate S is fixed are furnished along their inner edges with a groove g of
the shape shown in Fig. 3 the upper and lower inner surfaces of this groove slanting
upwards and downward respectively and extending one as far as the edge of the
upper surface of the bars and the other terminating some distance from the under-
neath surface.
The slate S is bevelled along its longitudinal edges and fitted in the grooves g in
such a manner that its upper surface Fig. 1 is flush with the top of the longitudinal
bars F while its lower surface is arranged as in ordinary school slates slightly
below the undersurface of the said bars F which thus protrude below this lower
surface.
Fig. 3 shows the connection of the longitudinal bars F with the cross bars f which
are dovetailed in the former.

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,―
The improved school slate formed with one plane surface which is flush with the
frame for the purpose of facilitating the practice of drawing substantially as herein
described and shown.
Deted this 2nd der off
F. G. CASSELL,
Of Cassell & Co.,
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.
F. G. CASSELL,
Of Cassell & Co.,
22, Glasshouse Street, Regent Street, London, W.,
Agent for the Applicant.