Improvements in Wire Cutters.
Year: 1891

page_text: Date of Application, 10th Mar., 1891
Complete Specification Left, 27th Nov., 1891-Accepted, 2nd Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in Wire Cutters.
A communication from abroad by OLIVER ARNOLD, of Leicester, in the County
of Worcester and State of Massachusetts, United States of America,
Cardmaker.
1, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, and 323, High Holborn, in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this invention
to be as follows:-
The object of this invention is to provide a wire-cutting tool or instrument having
jaws of semi-cylindrical form that shear against each other, as hereinafter explained.
The improved wire-cutter consists essentially of two cylindrical parts, one of
which is adapted to fit into and oscillate within the other. The end or ends of
both these cylindrical parts are cut away at one side, so as to form semi-cylindrical
jaws with cutting edges that stand opposite to each other, and which shear past
cach other at their cutting edges with the oscillative movement of the cylinders, for
severing a wire passed between the jaws in a direction transverse to the axis of the
cylinders.
The outer cylinder is cut away at one side to form a jaw or cutting edge, and the
inner cylinder is cut away on the side opposite to that of the outer cylinder to form
its jaw or cutting edge. One cylinder fits within the other cylinder, and is made
of substantially the same length. A lever or handle is attached to the outer part,
and a handle, properly fitted to pass through an opening in the side of the outer
cylinder, is connected with the inner cylinder. A pin, screw or stud may be
arranged through the axis thereof to hold the parts together. A spring is
preferably attached to one of the handles to press against the other to force them
apart and open the jaws. The jaws or cut away parts of the cylinders are so
disposed in relation to each other that, when the handles are spread apart, a space
is open between the cutting edges, through which the wire to be severed is passed;
and, when the handles are pressed together, the cylinders are oscillated and the
edges of the jaws shear past each other in such manner as to sever the wire by an
easy and powerful action.
The parts can be made of any suitable size and strength for cutting wires or
rods of any particular dimension; but it is preferable to make the tool of such
proportion that the opening of the jaws will not admit entrance between them of a
wire of larger gauge than can be readily severed by the tool in any given size, or
proport.onal strength of cutting jaws.
For machine work, as for cutting wire in card-setting machines, or for other
purposes, the cylinders having the cut away ends are supported upon a pin or stud
which is fixed in the frame. The inner cylinder is made fast to the stud, and the
outer cylinder is oscillatively mounted thereon and provided with a lever by which
it is wo.ked for opening and closing the cutting jaws. A hole formed through the
end of the stud serves as a guide for the wire as it is fed forward. Any suitable
means can be employed for imparting movement to either or both the cylindrical
parts to open and close the jaws.
If the cutting edges become dull and worn, their ends can be ground off and the
cylinders set forward, so that a new portion of the edge is brought into position for
severing the wire.
Date this 9th day of March 1891.
WM. P. THOMPSON & CO.,
Agents for the Applicant.

page_text: Figures 7 and 8 illustrate the improved cutter, as adapted for machine work, as
for cutting wire in card-setting machines, or for other like purposes. In this, the
cylinders A and B, having the cut away ends and cutting edges a and b, are
supported upon a pin or stud G, which is fixed stationary in the frame H. The
inner cylinder B is made fast to the stud by a set-screw I, or other convenient
means, and the outer cylinder A is oscillatively mounted thercon and provided
with a lever A' by which it is worked for opening and closing the cutting jaws.
Said lever can be clamped to the outer surface of the cylinder A by the screw J in
the manner illustrated."
A. hole y formed laterally through the end of the stud G serves as a guide for
the wire was it is fed forward.
Any suitable means can be employed as a lever for imparting movement to either
or both the cylindrical parts to open and close the jaws.
If the cutting edges of the jaws become dull and worn at one part, their ends
can be ground off and the two cylinders set forward by means of the adjusting
screw m, so that a new portion of the edge is brought into position for severing the
wire.
The construction shown and described affords a very convenient and efficient
form of wire-cutting mechanism.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
1. A wire-cutter consisting of two cylindrical parts, one arranged within the
other, portions of said cylinders being cut away to form semi-cylindrical jaws with
cutting edges that shear past each other by rotative action of one cylinder in
relation to the other, and an operating lever or means for imparting oscillative
movement to one or both of said cylinders, substantially as set forth.
2. The wire-cutting tool, consisting of an outer cylindrical part A, and the
inner cylindrical part B fitted within said outer cylinder, both having semi-
cylindrical jaws formed thereon with cutting edges a and b that shear past each
other by oscillative action of the cylinders, in combination with handles or
operating levers, one of which is connected to the outer cylinder, the other passing
through a slot in said outer cylinder and connected with the inner cylinder,
substantially as set forth.
Dated this 26th day of November 1891.
WM. P. THOMPSON & Co.,
Agents for the Applicant.