Improvements in Pencil Sharpeners.
Year: 1891

page_text: Date of Application, 25th May, 1891
Complete Specification Left, 25th Feb., 1892-Accepted, 26th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in Pencil Sharpeners.
1 FREDERICK PASCALL of York Villa, Francis Grove, Wimbledon, in the
County of Surrey, Confectionery Works Manager do hereby declare the nature
of this invention to be as follows:
Pencil sharpeners as heretofore made generally suffer from the defect of exposing
the pencil to a one sided strain the cutting being performed on one side thus often
causing the pencil point to break off during the process of sharpening. But
pencil sharpeners made according to my invention are constructed on the principle
of cutting on two opposite sides of the pencil at the same time, and that by not
turning the pencil round relatively to the sharpener but by pulling the pencil out
of the sharpener.
In one form I make the sharpener of a piece of flat sheet steel bent into bow
shape with a contracted part near the bow end and having on each of the two
opposite sides a cross slit and two contiguous slits with the tongue so formed bent
inwards to form a cutter. The pencil to be sharpened is thrust through between
the two cutters which on the pencil being pulled back cut it on two opposite sides;
another part of the pencil is then sharpened and so on until it is sharpened all
round. The cutters may produce flat or curved cuts and be made normally to
stand apart enough for admitting the taper end of the pencil.
Dated this 25th day of Mar 1891
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents
COMPLETE SPECIFICATION.
Improvements in Pencil Sharpeners.
I, FREDERICK PASCALL of York Villa, Francis Grove, Wimbledon in the
County of Surrey, Confectionery Works Manager 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:—
Pencil sharpeners as heretofore made generally suffer from the defect of
exposing the pencil to a one sided strain, the cutting being performed on one side
thus often causing the pencil point to break off during the process of sharpening.
Now pencil sharpeners made according to my invention are constructed on the
principle of cutting on two opposite sides of the pencil at the same time, and that,
not by turning the pencil round relatively to the sharpener but by pulling the
pencil out of the sharpener. The pencil is turned slightly round and inserted in
the sharpener or first reinserted in the sharpener, and then turned slightly round
and another cut is taken and so on, until the desired amount of sharpening is
obtained.
Referring to the accompanying drawings :—
Figure 1 is a perspective view of one form of pencil sharpener.
Figure 2 is an elevation thereof.
Figure 3 is a longitudinal section through the middle and showing a pencil in
process of being sharpened.
Figure 4 is a perspective view of a modification of pencil sharpener.
Figure 5 is a longitudinal section of same through the middle and
Figure 6 is a plan view of the blank of sheet metal ready for being made into
a pencil sharpener.

page_text: Figure 7 is a plan view of a blank similar to the preceding to be used for
another modification.
Figure 8 is a perspective view showing the finished pencil sharpener.
Figure 9 is a plan view of a blank for another modified form of pencil
sharpener.
Figure 10 is a similar view of a knife or cutter and
Figure 11 is a perspective view of the finished sharpener.
Referring to Figures 1, and 3 I make the sharpener of a piece of flat sheet
steel a bent into bow or U shape as shown in Figure 2 and having on each of the
two opposite sides a cross slit and two contiguous slits c with the tongue & so
formed, bent inwards to form a cutter. The pencil to be sharpened is thrust
through between the two cutters d which on the pencil being pulled back, as shown
in Figure 3 cut it on two opposite sides; another part of the pencil is then
sharpened and so on until it is sharpened all round.
Referring to the modification shown on Figures 4, 5 and 6 the sharpener is made
first in the form of a blank a a see Figure 6 with slots or slits b. The ends d
which are to form the knives or cutters are then sharpened and bent back at the
places indicated by the dotted lines and the two ends are bent together as shown
in section on Figure 5 and in perspective on Figure 4.
Referring to Figures 7 and 8, the shape of the blank a is precisely the same as
that shown on Figure 6 but in order to strengthen the cutters d the four corners a¹
are turned over after the said cutters have been bent so that the pencil sharpener
is finally produced as shown on Fig. 8.
As shown on Figures 9, 10 and 11 the cutter-knives & are made separately from
strip of steel, properly tempered and then fastened to the blank a by the flaps o
and which are as shown in the Figure 11 pressed down and over the cutters d.
The cutters & may be fashioned to produce flat or curved cuts and if desired the
blanks a a may be curved so as to conform more or less with the shape of a pencil.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed 1 declare that what 1
claim is:-
1. A pencil sharpener consisting of a piece of sheet steel bent into bow or
Ushape having knives or cutters near its ends so as to cut on opposite sides of
a pencil simultaneously substantially as described and shown.
2. The constructions of pencil sharpeners as shown on the drawings.
Dated this 25th day of Walm 1000
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.