Improvements in Pencil-sharpeners.
Year: 1892

page_text: COMPLETE SPECIFICATION.
Improvements in Pencil-sharpeners.
I, CARL FABER, of Nuremberg, in the Kingdom of Bavaria, Empire of
Germany, Manufacturer do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
The novel features of my improved pencil-sharpener are the following ones:
First, the sharpening blade being provided with two sharp edges and the edges
being interchangeable, the device may be used a long time before a sharpening of
the blade becomes necessary.
Secondly, the blade may be removed very easily in order to be sharpened, and
likewise be secured in its place again.
Thirdly, the blade may be adjusted to its right place, notwithstanding the wear
occasioned by sharpening it repeatedly.
These improvements are attained by the means more fully described hereinafter
with reference to the accompanying sheet of drawings, on which :
Fig. 1 is a front elevation of my improved pencil-sharpener,
Fig. 2 is a side view of the same,
Fig. 3 a rear elevation, and
Fig. 4 a plan view of the same.
Fig. 5 is a side elevation of a modification.
Fig. 6 is an under, and
Fig. 7 an upper view of another modification.
Similar letters refer to similar parts throughout the several views.
a is the frame or body of the device, having a conical bore b, passing from its
front to its rear end and placed laterally of the centre-line of the body a, as will
be seen at Fig. 3. Part of the upper side of the body a is formed as an incline d,
and on one side of the latter there is a longitudinal slot 1 arranged vertically
above the axis of the conical bore b, and communicating with the same.
Upon
the incline d there is placed the blade c having two longitudinal sharpened edges c¹
and c². Near to the upper end of the incline d, I also provide a stop g. The
blade c is in its centre provided with a hole through which passes the threaded end
of a screw f, fitting into a corresponding threaded hole in the body a, on the side
of the conical bore b. The central hole of the blade c is of a diameter somewhat
larger than that of the screw f. On the side of the body a below the level of the
incline d I provide two adjusting screws e e¹.
The screw being loosened, the blade e may be adjusted to its right position by
pushing the same up against the stop y and by screwing the screws e el a little on or
off, as may be required. When the sharp edge c' occupies the requisite position in
relation to the slot ', the screw is turned so as to secure the blade c. In order
to point a pencil, it is introduced into the wider end of the conical bore b, and
turned around on its axis, whereby the edge c' of the blade c sharpens the pencil
in a like manner as in the similar devices employed hitherto. When, through
extensive use, the edge c' is no more in working condition, the screw is loosened
and entirely removed, hereafter the blade c is replaced in the inverse position, the
edge c² taking the place of c'. Thus my improved pencil-sharpener may be user
twice as long as if the blade c had only one sharp edge. When both edges_c¹
and c² have become dull, the screw and blade c are removed, the edges of the
latter are sharpened anew, and the blade replaced in the described manner. The
breadth of the blade c is of course diminished by sharpening its edges, but owing
to its central hole being wider than the end of the screw f, it is still possible

page_text: to bring the edge c¹ or c³ respectively into the requisite position with respect to the
slot b¹.
In the modification illustrated by Fig. 5 the screw is entered into the body a
from below, and the hole in the said body a is smooth and somewhat wider than the
threaded portion of the screw f, whilst the central hole in the blade c is threaded
in order to receive the end of said screw f. The manner of employing the pencil-
sharpener is the same as described above.
In Figs. 5 & 6 I have shewn another modified construction of my improved
pencil-sharpener. The arrangement of the screw and blade c, and the manner
of securing the same to the body a, are the same as represented on Fig. 5 and
described above with reference to that figure.
The adjusting-screws e and e¹ are however arranged in a manner different
from that shown in the other forms of construction. They are passed through
the body a parallel to the screw f, and are provided at their upper ends, above the
incline d, with eccentric pins e e fitting into square holes c³ c, of the blade c. It
is apparent that the adjustment of the edge e will be attained by turning the
screws e e¹ as required.
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. In a pencil-sharpener: The combination with the body a, having a conical
bore b, slot & and incline d, of the reversible blade c and the screw f, for the
purpose as described.
2. In a pencil-sharpener: The combination with the body a, having a conical
bore b, slot & and incline d, of the reversible blade c, the screw f, adjusting-
screws e and e¹, and stop g, the central hole in the blade c being wider than the
threaded portion of screw, substantially and for the purpose as described with
reference to Figs. 1-4 of the accompanying drawing, and for the purpose
specified.
3. In a pencil-sharpener: The modification illustrated by Fig. 5 and described
with reference thereto, in which the screw f passes through a smooth hole in the
body a, the end of said screw fitting into a threaded central hole in the blade c,
substantially and for the purpose as described.
4. The modified construction of the adjusting device, consisting of the screws e e',
having at their ends eccentric pins e et fitting into square holes in the blade c,
substantially as shown and described with reference to Figs. 6 & 7 in the accom-
panying drawing, and for the purpose set forth.
Dated this 22nd day of March 1809
By Geo. H. Rayner,
CARL FABER,
37, Chancery Lane, London, W.C., Agent for the Applicant.