Improvements in Combined Pencil and Pencil Sharpening Knife.
Year: 1891

page_text: COMPLETE
SPECIFICATION.
Improvements in Combined Pencil and Pencil Sharpening Knife.
I, JOHN PITT BAYLY, of 18, Fulham Place, Paddington, in the County of
London, Patent Agent, do hereby declare the nature of this invention (a com-
munication to me from abroad by Rhodolph H. Franklin, Foreman Machinist,
of Brooklyn, New York, U.S.A.), and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement :—
My invention consists in an improved construction of wood pencils, and a pencil
sharpening knife attachment for the pencil, whereby I have provided a more
feasible and effective pencil sharpening knife attachment for wood pencils than such
as are now used; as hereinafter fully described reference being made to the acconi-
panying drawing in which :-
Fig. 1 is partly a side elevation and partly a longitudinal section of a wood pencil
as I make it for the application of my improved attachment.
Fig. 2 is a similar view of the wood pencil and a longitudinal section of the case
or handle of the attachment with the pencil sharpening knife and rubber eraser in
side view.
Fig. 3 is a side view of the pencil and attachment complete.
Fig. 4 is a perspective view of the case or handle and the knife blade as made of
a single piece of sheet steel, and
Fig. 5, is a diagram of the blank piece of sheet steel such as is adapted to make
the case or handle and knife blade as in Figure 4.
b
I make the wood pencil a with a radial groove along it from the upper end a
suitable distance for the length of the knife blade e and a suitable depth for the
width of the blade, and I provide a knife consisting of said blade c, and a tubular
handle d adapted to slip on the upper end of the pencil, and also forming a socket
or case for the rubber eraser e inserted in one end.
The knife blade is inserted in the end of said tubular handle or case that slips on
the upper end of the pencil and is so attached at the back edge that its transverse
plane is radial to the tube and to the pencil when applied thereto, and so as to be
received in the radial groove thereof as the sheath for the blade.
༡
The knife blade may be attached to the tube in any approved way, as by the
studs on the back inserted from the inside of the tube and headed down on the
outside, or it may be part of a plate g of sheet metal adapted to form the tubular
handle d, said part being an extension of one edge of said plate part of its length,
and also an extension of one end, which plate being bent on the dotted line h so as
to assume the radial position when the plate is rolled into the tubular form, thus
provides the handle and blade in integral connection of the blade and tube.
Thus I am enabled to furnish a practicably efficient knife attachment together
with a common rubber eraser attachment, all of which may be sold together with
the pencil but as the knife attachment will outlast many pencils I also propose to
make and sell such grooved wood pencils separately to supply those having first
purchased the complete device, and having the knife attachment remaining require
only the grooved pencil as represented in Fig. 1.
I am aware of the Cook Patent in which there is a knife blade consisting of an
extension of the tubular handle forming a transversely curved blade and I do not
claim such device, my construction is such as to provide a flat blade of the ordinary
or better form, and it also provides for effectually sheathing the blade when not in
use, whilst in that case the blade is exposed on the side of the pencil.

page_text: 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. The improved knife attachment for pencils consisting of the tube adapted for
inserting one end portion of a wood pencil in it, and a knife blade set radially edge-
wise in and projecting from one end of said tube with its back in line with one side,
and its edge in the axial line of said tube or thereabout substantially as described.
2. The improved knife attachment for pencils consisting of the tube adapted for
inserting one end portion of a wood pencil in it, and a knife blade set radially edge-
wise in and projecting from one end of said tube with its back in line with one side,
and its edge in the axial line of said tube or thereabout, in combination with a wood
pencil having a radial groove adapted to receive said blade when applied for
sheathing the blade substantially as described.
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1 1001
J. P. BAYLY,
Applicant.