Improvements in Appliances for Use in Cleaning School Slates and for similar purposes.
Year: 1896

page_text: Date of Application, 7th Oct., 1896
Complete Specification Left. 7th July, 1897-Accepted. 7th Aug.. 1897
PROVISIONAL SPECIFICATION.
Improvements in Appliances for Use in Cleaning School Slates and
for similar purposes.
I, JOHN HENRY LOLLAR EWEN, c/o Mrs. Rhodes, Bank Top, Kendal, in the
County of Westmorland, Missionary, do hereby declare the nature of this invention
to be as follows:-
This invention has for its object a certain new or improved article of manu-
facture applicable for cleaning or rubbing out the writing on school slates and
for other purposes. Hitherto school slates have been invariably cleaned by wetting
them and afterwards drying them, a practice which has many disadvantages, but
by my present invention I am able to entirely avoid this, and provide instead a
device which will dry clean the slate without the use of any moisture at all.
In carrying my invention into effect, I provide a pad formed of blotting paper
or ether suitable, soft unsized or absorbent material which will not scratch the
surface. It may be formed of a long strip of blotting paper rolled tightly up into
a small roll or made of a solid block, either in a mould or cut up into suitable
sized pieces or in any other suitable manner. It may be provided with a handle
or not as required to facilitate use. It must be understood that I do not confine
myself to the use of blotting paper, and moreover an article of this kind can be
used for other cleaning or polishing purposes besides cleaning slates.
To use the article in connection with school slates, all that is necessary is to rub
it over the surface of the slate, when the writing or drawing will immediately
disappear without having to use any water at all.
Dated this 6th day of October 1896.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.
Improvements in Appliances for Use in Cleaning School Slates and
for similar purposes.
I, JOHN HENRY LOLLAR EWEN, c/o Mrs. Rhodes, Bank Top, Kendal, in the
County of Westmorland, Missionary, 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 has for its object a certain new or improved article of manu-
facture applicable for cleaning or rubbing out the writing or drawing on school slates
and for other purposes. Hitherto school slates have been invariably cleaned by wetting

page_text: them and afterwards drying them, a practice which has many disadvantages, but
by my present invention I am able to entirely avoid this, and provide instead a
device which will dry clean the slate without the use of any moisture at all.
The invention will be understood from the following description, reference
being had to the accompanying drawings, in which
Figure 1 is a view showing the device ready for use;
Figure 2 another view showing the pad slightly unrolled and without its outer
cover, and
Figure 3 a cross section.
Referring to these figures, I provide a pad A formed of blotting paper or other
suitable soft unsized or absorbent material which will not scratch the surface.
These pads are by preference formed in the following manner:
I take a sheet of blotting paper in the piece, and roll it tightly into a long roll
fastening the edge by means of gum so that it will not come unrolled. This roll
is cut into small circular pads, such as A, of suitable size, which are further pre-
vented from coming unrolled, and rendered capable of resisting lateral pressure by
pins B driven radially through them. The peripheral surface of each pad may also
be enclosed in an outer cover, on which may be printed any suitable letter press
desired. It must be understood that I do not confine myself to the use of blotting
paper, and moreover an article of this kind can be used for other cleaning or
polishing purposes besides cleaning slates.
To use the article in connection with school slates, all that is necessary is to rub
one of the flat surfaces or faces of the pad over the surface of the slate, when the
writing or drawing will immediately disappear, without having to use any water
at all. The pads may be provided with eyes C for connecting them to the slate
by a string or knot as required to facilitate use.
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:-
.
1. As an improved article of manufacture or commerce, an eraser, cleaner ör
polisher for school slates or other purposes, formed of a strip of blotting paper or
other soft unsized or absorbent material, rolled tightly up into a cylindrical roll,
and fastened by pins driven radially through to prevent it coming unrolled or being
laterally displaced.
2. As an improved article of manufacture, a cleaner or rubber formed of a strip
of blotting paper or other soft unsized or absorbent material rolled tightly up into
a cylindrical roll, and fastened by pins driven radially through, to prevent it
becoming unrolled or laterally displaced, and an attachment whereby the cleaner
can be attached to a school slate, substantially as described.
3. Slate rubbers or cleaners formed by tightly rolling a sheet of blotting paper
or like material into a roll, cutting this roll into segments or small circular
pads, and fastening the pads to prevent them coming unrolled, or being laterally
displaced by driving pins radially therethrough, substantially as described.
4. The manufacture of slate rubbers or cleaners of pads or blocks of blotting
paper or other like unsized or absorbent material which will not scratch.
Dated this fith day of July 1807
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Birmingham and London, Patent Agents.