A Combi Slate and Pencil Sharpener
Year: 1886

page_text: Date of Application, 31st Mar., 1886.
. Complete Left, 30th Dec., 1886.
Complete Accepted, 1st Feb., 1887.
I SYDNEY PITT of Sutton in the County of Surrey Gentleman do hereby declare the
nature of this invention to be as follows:-
This invention has for its object improvements in writing slates.
The invention consists in a method of combining with the frame of the slate a knife
blade to be employed in sharpening the pencil from time to time.
For this purpose a recess in the form of the knife blade is made in the frame by
deepening the groove or rebate into which the edge of the slate slab is received.
The knife is narrower than the width of the frame and the portion of the edge of
the knife required for use is exposed by notching away the frame on the outer side
until the recess in which the knife is deposited is reached. The portion of the edge
within the notch is exposed sufficiently to admit the point of a pencil being sharpened
thereon.
In this way the knife blade is easily and conveniently fixed and its edge is shielded
so that the hands of the user cannot be injured by it.
COMPLETE SPECIFICATION.
A Combined Slate and Pencil Sharpener.
I, SYDNEY PITT of Sutton in the County of Surrey, Gentleman, (a communication
to me from abroad by James Field of Russell's Flat, Malvern, Canterbury, New
Zealand) 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 :-
A Combined Slate and Pencil Sharpener.
I, SYDNEY PITT of Sutton in the County of Surrey, Gentleman, (a communication
to me from abroad by James Field of Russell's Flat, Malvern, Canterbury, New
Zealand) 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 improvements in writing slates.
The invention consists in a method of combining with the frame of the slate a knife

page_text: For this purpose a recess in the form of the knife blade is made in the frame by
deepening the groove or rebate into which the edge of the slate slab is received.
The knife is narrower than the width of the frame, and the portion of the edge of the
knife required for use is exposed by notching away the frame on the outer side until
the recess in which the knife is deposited is reached. The portion of the edge within
the notch is exposed sufficiently to admit the point of a pencil being sharpened
thereon.
In this way the knife blade is easily and conveniently fixed and its edge is shielded
so that the hands of the user cannot be injured by it.
In order that my said invention may be most fully understood and readily carried
into effect I will proceed to describe the drawings hereunto annexed.
Figure 1 is a plan of a slate with a knife blade combined with it in accordance with
my invention.
...
Figure 2 is an edge view of the same.
Fi igures
3 shew the knife blade separately, and
1
Figures 4 shew the top rail of the frame which is recessed to receive the knife blade,
the recess marked A consists of a deepening of the groove, or rebate B into which the
edge of the slate slab is received. .C is the notch on the outer side of the rail to expose
the knife edge. D is the knife blade and E E are pins driven into the frame beneath
the inner edge of the knife blade to keep the blade in place.
Figures 5 show a knife blade of modified form.
Figures 6 show the top rail of the frame used with the knife shown by Figure 5.
The knife blade is longer and is arranged to slide so that a considerable length of edge
may be available for use. A pin D¹ on the knife is received into a slot X X in the
wood as the drawing indicates and by pushing against this pin the knife can be moved
so as to present a different part of the edge at the notch C.
Figures 7 show a knife of another form with two edges and reversible.
Figures 8 show the rail to receive this knife. The knife is slotted at D2 D2 and
screws yy pass through the slots. When these screws are removed the knife can be
taken out and turned. The knife can also slide in the same way as that shown by
figure 5.
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. The combination with a slate and its frame of a knife blade for sharpening pencils
by inserting the said knife blade D into a recess A produced by deepening the
rebate B into which the edge of the slate slab is received and by providing also a
notch C in the frame exposing the edge of the knife blade substantially as described.
2. A combined slate and pencil sharpener substantially as described and represented
in the annexed drawings.
CARPMAEL & Co.,
Agents for the Applicant.