Improvements in Apparatus for Sharpening Pencils, Chalk, and the like.
Year: 1893

page_text: Date of Application, 21st June, 1893-Accepted, 22nd July, 1893
CUMI LETE SPECIFICATION.
Improvements in Apparatus for Sharpening Pencils, Chalk, and
the like.
I, KARL MEIER, Mechanical Engineer residing at Berne in the Republic of
Switzerland, 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 for improvements in apparatus for sharpening pencils, chalk, and
the like, has for its objest to provide a tool similar to a plane and by means of
which a point as long and thin as desired may be put to pencils chalks and the like
without any danger of breaking off the point.
In the accompanying sheet of illustrative drawings:
:-
Figure 1 is an elevation of a pencil sharpener constructed according to this
invention, and Figure 2 is an end elevation, Figure 3 a plan, and Figure 4 a
longitudinal section of the same.
Figures 5 and 6 are longitudinal section and plan respectively showing the pencil
sharpener fitted in a similar case to those used in schools for pencils.
The pencil sharpener is composed of the spring cutter a in which is made a slot b
and which is so curved that the end or cutting edge a 1 made in one piece with the
piece a is adjacent to and adapted to be forced through the said slot as shown. By
means of a screw c screwed to the back of the cutter a the edge of the cutter a 1 is
fixed as desired with respect to the surface of the piece a. By unscrewing the
screw c sufficiently the cutter al will on account of the elasticity of the material
forming the cutter recede below the upper part of the cutter and enable it to be
easily sharpened. The sharpener itself, formed by the cutter a and the cutting
edge a 1, is placed in the tray d to which it is fixed by the screw c.
To sharpen a pencil the sharpener is held in the left hand and acts on the pencil
which is held in the right hand and turned continually so that each time the pencil
is taken over the cutting edge a 1 a thin shaving is removed.
In order to prevent the object to be sharpened from slipping over the edge, the
surface is provided with edges e.
The lower surface of the tray d is cut similarly to a file and then serves as a file.
for the pencils. A cigar cutter g is also made on one of the lateral surfaces of the
tray d. In order to more easily remove the shavings which accumulate in the
tray d a hole fis made in one of the lateral surfaces thereof. Instead of placing
the pencil sharpener in a tray it may be fixed in a box or pencil case as shown in
Figures 5 and 6 or to the cover of the box or case. The edges e of the sharpener
are then sharpened on the outside to act as files.
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. A sharpener for pencils and the like consisting of a spring cutter provided
with a slot and so curved that one end forming the cutting edge is adjacent to the
said slot and is adapted to be forced through the same substantially as described.
2. A sharpener for pencils and the like consisting of a spring cutter provided
with a slot and so curved that one end forming the cutting edge is adjacent to the
said slot and is adapted to be forced through the same and of a nut and screw the
said screw passing through the cutter adjacent to the cutting edge and screwing
P01

page_text: into the nut or tapped hole adjacent to the slot the whole substantially as herein
set forth.
Dated this 21st day of June 1893.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.