NEW OR IMPROVED APPARATUS FOR POINTING PENCILS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I, THOMAS MOORE, of N° 43 St Peters Street, Islington, in the County of
Middlesex, Engineer, do hereby declare the nature of my Invention for "NEW
OR IMPROVED APPARATUS FOR POINTING PENCILS" to be as follows:-
·
My Invention relates to apparatus for pointing pencils, which is arranged in the
following manner. I cause the pencil that is to be pointed to rotate on its axis
while a plane iron moving in a plane inclined to the axis of the pencil, cuts the
material at its end, thus producing a conical point. I enclose the pencil in a tube
split at one end and provided with a clamping ring to hold the pencil firmly, and I
mount this tube in a bearing in which it can revolve. On the plate or frame which
carries this bearing I arrange the cutter in either of two forms. It may be a plane
iron projecting slightly from the face of a disc which is made to revolve on an axis
inclined to the axis of the pencil and the disc may have several such cutters, or it
may be a plane iron projecting slightly from the face of a straight plane moved to
and fro along along a guide inclined to the axis of the pencil. The pencil tube may
be turned gradually round by one hand while the cutter is moved by the other, or
the pencil tube may be connected by suitable gear with the cutter so as to be turned
gradually round as the cutter moves.
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C.

page_text: I, THOMAS MOORE of N° 43 St Peters Street, Islington in the County of
Middlesex, Engineer do hereby declare the nature of my Invention for "NEW
OR IMPROVED APPARATUS FOR POINTING PENCILS" and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement :—
My Invention relates to apparatus for pointing pencils, which I will describe
referring to the accompanying Drawings. Fig. 1 is a side view, Fig. 2 is a plan
and Fig. 3 is an end view of the whole apparatus, Fig. 4 is a front view of the
cutting disc, Fig. 5 is a side view of the holding tube and Fig. 6 is a part section
shewing the catch nut for feeding. On a frame A I mount in bearings the axis of
a disc B which is turned in the direction of the arrow by a handle C. In the disc
are fixed obliquely three or more plane irons D adjustable so that they can be set
with their cutting edges projecting a little beyond the face of the disc B.. Within
a bearing E is fitted to revolve a tubular socket e into which can be inserted a
tube F this tube having on it a stud f' which enters a slot of the socket e. On
the outside of the tube F is cut a screw thread, and the front end of the tube is
split up for some distance and provided with a ring f so that a pencil inserted
within the tube F can be clamped therein by pushing the ring ƒ along the taper
part of the tube F. The axis of the tube F when it is inserted into the socket e is
inclined to the face of the disc B at an angle which is half that desired for the
conical point of the pencil. On the axis of the disc B is a worm b gearing with a
worm wheel on an axis G which by means of toothed wheels g is geared to the
tubular socket e, so that when the disc B is caused to revolve, the socket e is also
caused to revolve more slowly, turning with it the tube F and the pencil H which
it holds. To the bearing E is hinged and provided with a knife blade spring a
catch K which has on its under side part screw threads fitting the screw on the
tube F, so that when this catch is turned down as shewn in Fig. 6, the tube F,
while it revolves, is caused slowly to advance. On the face of the disc B, outside
the plane irons D, is an annulus L of a grinding material, which may be a file cut
-surface or it may be a ring of emery or other grinding material fixed to the disc.
The action of the apparatus is as follows: A pencil H being introduced into the
tube F and clamped therein by means of the ring f, the tube F containing the
pencil is introduced through the socket e so that the end of the pencil projects
towards the disc B. The catch K being then turned down so that its screw threads
engage with those of the tube F, the disc B is turned by means of the handle C
and by means of the gearing the socket e, tube F and pencil H are caused to turn
slowly, the tube and pencil also being caused to advance by the engagement of the
screw threads at K. The plane irons D in revolving slice off portions of the wood
at the end of the pencil giving it its conical form, while the grinding surface L of
the disc points the black lead core of the pencil. When the pencil is sufficiently
pointed, the catch K is raised, the tube F is withdrawn and the pencil is released
from it.
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 construction of apparatus for pointing pencils, substantially as herein
described and illustrated by the accompanying Drawings

page_text: 2. In apparatus for pointing pencils, the combination of a revolving disc carrying
plane irons with a revolving and advancing, tube holding the pencil obliquely
presented to the disc, substantially as herein described.
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C.