Improvements in Devices for Sharpening Scissors and similar Double Bladed Outting Instruments.
Year: 1893

page_text: Date of Application, 18th Feb., 1893
Complete Specification Left, 10th Nov., 1893-Accepted, 16th Dec., 1893
PROVISIONAL SPECIFICATION.
[Communicated from abroad by JULIUS WILLIAM HINTZE, Electrician, on board
8.8. Duchess of Marlbrough, at present in the West Indies.]
Improvements in Devices for Sharpening Scissors and similar
Double Bladed Outting Instruments.
I, ROBERT THOMAS BROWN, of Derna, St. Peter's Road, St. Margarets,
Twickenham, in the County of Middlesex, Secretary to a Public Company, do
hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in devices for sharpening scissors and other
double bladed cutting instruments similar in construction to scissors.
In carrying it into effect, I provide a cylinder of fine emery or other analogous
sharpening material. The material must be fine and hard in order that the cylinder
may have a fine grain. This cylinder is preferably circular in cross section, but I
do not confine myself in this respect as it may be polygonal. I provide a suitable
handle by which the cylinder can be conveniently held in operative position. It
consists of a loop or similar hand grip and an axis on which the cylinder is free to
I prefer a piece of wire bent so as to form a loop large enough for the
fingers to be passed through it, and a second one at right angles therewith in which
the cylinder is supported by the ends of the wire entering holes in the centre of its
ends or by the wire passing through an axial perforation.
turn.
The cylinder may be homogenous or may be made with a cone of wood or other
material cheaper than the sharpening material.
The improved device is used by gripping it between the blades of the scissors
and drawing them across it from heel to point.
Dated this 18th day of February 1893.
PHILLIPS & LEIGH,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Devices for Sharpening Scissors and similar
Double Bladed Cutting Instruments.
I, ROBERT THOMAS BROWN, of Derna, St. Peter's Road, St. Margarets,
Twickenham, in the County of Middlesex, Secretary to a Public Company, 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:-
My invention relates to improvements in devices for sharpening scissors and other
double bladed cutting instruments similar in construction to scissors.
In carrying it into effect, I provide a cylinder of fine emery or other analogous
sharpening material. The material must be fine and hard in order that the cylinder
may have a fine grain. This cylinder is preferably circular in cross section, but I
do not confine myself in this respect as it may be polygonal. I provide a suitable
handle by which the cylinder can be conveniently held in operative position. It
consists of a loop or similar hand grip and an axis on which the cylinder is free to
turn. I prefer a piece of wire bent so as to form a loop large enough for the
fingers to be passed through it, and a second one at right angles therewith in which
the cylinder is supported by the ends of the wire entering holes in the centre of its
ends or by the wire passing through an axial perforation.
The cylinder may be homogeneous or may be made with a core of wood or other
material cheaper than the sharpening material.
D
017

page_text: The improved device is used by gripping it between the blades of the scissors
and drawing them across it from heel to point.
In order that the invention and the best means of carrying it into practical effect
may be thoroughly understood, I will now describe it in detail, referring in so
doing to the accompanying figures which are to be taken as part of this Specification
and read therewith.
Figure 1 is a side elevation of a sharpening device made according to my inven-
tion with a wire handle.
Figure 2 is a side elevation, partly in section, illustrating the use of a modified
handle.
Figure 3 is a side elevation of Figure 2.
Figure 4 is an end elevation of a cylinder with a perforated core.
Figure 5 is a perspective view illustrating the manner of using the improved
sharpening device.
a is the cylinder. It is shewn as circular in cross section, and this shape is one
that gives good results, but it must be borne in mind that the invention does not
limit me in this respect, for I may make it polygonal as already pointed out.
Further, it may be solid as illustrated in Figures 2, 3 and 5, or tubular as
illustrated in Figure 4, the bore being occupied with a core a¹. The presence of
the latter has nothing to do with the action of the invention.
The cylinder is supported in a handle in which it can move freely about its axis.
This handle may be of any suitable construction or shape provided that it has a
practicable axis for the cylinder to turn on, and a grip by which the cylinder can
be held in operative position. The handle illustrated in Figure 1 is made of wire
bent into the shape of two loops at right angles with, and opening into, each other.
The larger of these loops, c, is the grip. The smaller one, d serves as a frame for
the cylinder. The ends of the wire enter axial perforations in the cylinder,
thereby serving as the practicable axis above mentioned.
The handle illustrated in Figures 2, 4 and 5 is made of cast metal. c¹ is the
grip, and the frame for the cylinder. This frame consists of a longitudinal
extension from the edge of the grip and a second extension at a right angle with
the former: The practicable axis for the cylinder consists of a core d² projecting
from the said edge of the grip and a set screw d³ axially aligned with the said
core and working through the second of the said extensions. The point of the
set screw is conical and conical cavities to receive the core d' and the point of the
screw respectively, are formed in the ends of the cylinder.
The practicable axis for the cylinder may consist of a rod projecting from the
edge of the grip in the same direction as the core d and long enough to pass
through the cylinder which is bored out axially as represented in Figure 4, and
with this rod may be combined any suitable head or other device for keeping the
cylinder on it.
The manner in which my invention is used is illustrated in Figure 5. The
cylinder is held by the grip, and the separated blades are drawn, edge on, from
heel to point, across the opposite sides of the cylinder, enough pressure being
exerted to keep the edges of both blades in close contact with the said sides.
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
The combination of cylinder, grip, and practicable axis upon which the cylinder
is free to rotate, as set forth.
Dated this 10th dow of Nawaban 1002
PHILLIPS & LEIGH,
22, Southampton Buildings, Chancery Lanc, London, W.C.,.
Agents for the Applicant.