Improvements in Pencil Sharpeners."
Year: 1897

page_text: Date of Application, 28th Oct., 1897--Accepted, 4th Dec., 1897
COMPLETE SPECIFICATION.
"Improvements in Pencil Sharpeners."
I, CHRISTIAN ALBERT JENSEN of 77 Chancery Lane in the County of Middlesex,
Chartered Patent Agent, do hereby declare the nature of this invention, a
communication to me from abroad by the firm of Eichner & Heinicke of 16 Inselstrasse
Leipzig in the German Empire Manufacturers, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
any
My invention relates to pencil sharpeners by means of which pencils of section
can be sharpened and provided with points of any desired length. It possesses a
further advantage inasmuch as the shavings are collected therein and can be,
from time to time as desired, removed therefrom thus avoiding the troublesome
littering of the room or writing table.
In the accompanying drawings the pencil sharpener is shewn in side elevation
in Fig. 1, and in plan in Fig. 2 while Fig. 3 is a section on the line x-x Fig. 2
and Fig. 4 a section on line y—y Fig. 1.
The pencil sharpener resembles a carpenters plane and consists of a stock casing or
box a which has a hollow rounded sole or bottom.
The stock a provided with a plane-iron 6 having a concave cutting edge
corresponding to the aforesaid hollow rounded sole. This plane iron is provided with
an oblique bed or seating d in the box a extending through to the sole and is secured
thereto by a screw c.
In order to admit of the adjustment of the plane iron b with reference to the sole
so as to be able to vary the cut I have shown upon the drawings, in the plane iron b,
a slot e in the line of adjustment. To admit of the removal or insertion of the plane
iron without entirely unscrewing the screw c the ends of the slot e are sufficiently
enlarged to permit of the head of the screw c passing through.
I have also shewn on the drawings a cutting edge at each end of the plane iron b
so that when one edge becomes blunted the plane iron may be reversed.
The mouth for the shavings is widened out, in front of the plane iron b, to form
a receiver for the shavings.
To prevent the shavings accidentally falling out of the receiver f¹ a cover g is
provided. In the example shown on the drawings the cover g is held at one end by
a pin or screw h on which it turns see Fig. 2. The other end of the cover is preferably
cut at an angle and reduced in thickness so as to form a shoulder g¹ and takes under
a corresponding angular tongue or shoulder i on the stock a by which means the
cover can be held firmly in place.
In pointing the pencil, the sharpener is held in the left hand, between the thumb
and index finger with the cutting edge of the plane iron upwards and supported on
the edge of the table or against the chest while the pencil is held in the right hand
at an inclination corresponding to the desired length of point and pressed with a
moderate pressure against the cutting edge of the plane iron.
In this manner black or coloured pencils of any section can be easily pointed.

page_text: Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated
to me by my foreign Correspondents I declare that what I claim is :-
1. In a pencil sharpener the combination of a plane iron (b) secured at an angle in
the stock having a concave cutting edge a plane stock (a) having a corresponding
concave sole, the mouth (f) enlarged to form a container (1) for the shavings and a
cover (g) for closing said container, substantially as described and shown on the
drawings.
2. A pencil sharpener as firstly claimed having a plane iron with a cutting edge at
both ends thereof and a slot to permit of the adjustment of the said plane iron said
slot being enlarged at both ends substantially as described and for the purposes set
forth.
3. The construction of pencil sharpeners as described and shown upon the
drawings.