Improvements in Slates and similar Devices for Educational Purposes.
Year: 1899

page_text: Date of Application, 19th Dec., 1899
Complete Specification Left. 19th Sept., 1900-Accepted, 15th Dec., 1900
PROVISIONAL SPECIFICATION.
Improvements in Slates and similar Devices for Educational Purposes.
I, HENRY KING, of the St. Leonard's Collegiate School, St. Leonards-on-Sea,
Sussex, Schoolmaster, do hereby declare the nature of this invention to be as
follows:-
This invention relates to slates and similar devices for educational purposes and
has for its object the provision of means whereby lines and other marks can be
readily drawn upon the surfaces thereof with accuracy and precision in an
extremely simple manner easily understood and grasped by young children.
To carry my invention into effect I arrange the frame or edge of the slate or
other device in combination with a ruler so that the movement of the ruler upon
the frame or edge can be made parallel to two sides of the said frame or edge. I
arrange scales upon the said frame or edge and ruler so that specific and pre-
determined increments of distance between the lines drawn can be readily made.
I arrange the ruler so that its ruling edge is in close proximity to the surface
of the slate or the like and I provide surfaces upon the ruler so as to contact
with the frame or edge of the slate or the like on each side to maintain the
parallelism of the movement of the ruler over the marking surface.
I may make one or more of the sides of the frame flush with the writing sur-
face of the slate or the like, to allow the ruler to pass freely beyond the surface.
In the case of a square slate or other device the ruler need only have one
gauge of guiding surfaces but in the case of an oblong slate or other device two
gauges of guiding surfaces are provided on the ruler preferably on opposite sides
80 as to coact with the opposite sides of the frame or edges according to the way
the ruler is put across the writing surface viz.:-across the long way or the narrow
way of the writing surface.
1000
FELL & JAMES,
1, Queen Victoria Street, London, E.C.,
Agents for the Applicant.
Improvements in Slates and similar Devices for Educational Purposes.
I, HENRY KING, of the St. Leonard's Collegiate School, St. Leonards-on-Sea,
Sussex, 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:-
malatne to alates and similar devices for educational nurnages and

page_text: has for its object the provision of means whereby lines and other marks can be
readily drawn upon the surfaces thereof with accuracy and precision in an
extremely simple manner easily understood and grasped by young children.
My invention consists in the arrangement of the frame or edge of the slate or
other device in combination with a ruler so that the movement of the ruler upon
the frame or edge can be made parallel to two sides of the frame or edge. I
arrange scales upon the said frame or edge and ruler so that specific and pre-
determined increments of distance between the lines drawn can be readily made.
I arrange the ruler so that its ruling edge is in close proximity to the surface
of the slate or the like and I provide surfaces upon the ruler so as to contact
with the frame or edge of the slate or the like on each side to maintain the
parallelism of the movement of the ruler over the marking surface.
I may make one or more of the sides of the frame flush with the writing sur-
face of the slate or the like to allow the ruler to pass freely beyond the surface.
In the case of a square slate or other device the ruler need only have one
gauge of guiding surfaces, but in the case of an oblong slate or other device two
gauges of guiding surfaces are provided on the ruler, preferably on opposite sides,
so as to coact with the opposite sides of the frame or edges according to the way
the ruler is put across the writing surface viz. :-across the long way or the narrow
way of the writing surface.
In order that my invention may be the better understood I will now proceed to
describe the same in relation to the accompanying drawing, reference being had
to the letters and figures marked thereon. Like letters refer to like parts in the
various figures.
Figure 1 is a perspective view of a slate made according to my invention.
Figure 2 is a perspective view of the ruler constructed to coact with the said
slate.
Figure 3 is a transverse section across the oblong slate showing the ruler in
position thereon parallel to the short axis of the slate.
Figure 4 is a longitudinal section of the oblong slate showing the ruler in posi-
tion thereon parallel to the long axis of the slate.
The sides a b c of the slate A are shown raised on the one side while the side d
is made flush with the surface of the slate, while on the other side, the sides acd
are raised and the side b is flush. Scales of inches or other standard of measure-
ment are provided on the sides a and b. The sides are made parallel in form and
in relative position to one another. The ruler B is provided with two transverse
channels C which are of such a size and disposition as to engage over the sides a
and c of the frame so as to maintain the parallelism of the ruler to the sides b
and d of the frame. The ruler edge thus lies close to the writing surface of the
slate, and the flush side b or d enables it to be brought down off the surface so
that the ruler can deal with the whole area.
On the opposite side of the ruler a transverse channel D is provided which is
adapted to coact with the raised portion of the sides b or d, while at the opposite
end of the ruler a projecting chock E is provided which engages around and upon
the edge of the sides b or d on their flush sides. Scales F and G are provided on
the edges of the ruler.
Having now particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed, I declare that what
I claim is-
1st. A device having a writing surface enclosed within a rectangular frame or
border or edge provided with scales of measurement in combination with a ruler
adapted with a ruling edge or edges to lie close to the writing surface and means
upon the said ruler adapted to coact with the framework or border or edge of the
said device so as to maintain the parallelism of the said ruling edge with two of
the sides of the rectangular frame or border or edge, substantially as described.

page_text: 2nd. The construction and arrangement of the improved writing surface and
ruling device substantially as described and illustrated in and by the accompany-
ing drawings.
Dated this 19th day of September 1000
FELL & JAMES,
Agents for the Applicant.
1, Queen Victoria Street, London, E.C.,