Year: 1888

page_text: Date of Application, 28th July, 1888
Specification Accented. 21st Sept., 1888
I, CHARLES HENRY WILLMORE, of Rouge Bouillon, Jersey, Professor of Music,
do hereby declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement :-
This Invention relates to improved apparatus for marking or cutting ellipses, the
apparatus being especially applicable for cutting elliptical openings in card or other
mounting boards and for making elliptical delineations for any required purpose.
The improved apparatus is represented on the accompanying drawing in plan view
(with a covering plate removed) in Fig. 1. with a dotted diagram extending into
Fig. 2. which represents the apparatus in longitudinal sectional elevation, Fig. 3.
representing the apparatus in transverse section through a-b Fig. 2. looking in
the direction of the arrow, c.
The improved apparatus is preferably so constructed as that it is or can be suspended
above the card or material on which it is required to operate and for this purpose it is
provided with an upward extension, 4, or its equivalent, which can be suitably fixed
in any convenient bracket or support and to which the apparatus is connected so as to
be suspended by a lateral extension, or top plate, 5, and by screws, 6, which enter a
block, 7, formed with cross slots, 8, 9, at right angles to each other. The parts,
4, to, 7, consequently occupy a relatively fixed position, and the part, 7, serves
as a directive guide to the parts horeinafter described.
Such parts consist essentially of a limb, 10, provided with longitudinal slots, 11, 12,
and adjusting screws, 13, 14, journalled in a transverse support, 15, and in end
parts, 16, 17, of the said limb, each of such screws being prevented from endway
movement by a set screw, 18, working in a peripheral groove, 19, therein, and
being rotated when desired by an end rimmed wheel, 20, or its equivalent fust
thereon.
The limb, 10, is also adapted with projecting handles, 21, by means of which it
can be conveniently swung round above the material upon which the device is to
operate.
The said slots, 11, 12, serve as guides for nuts, 22, 23, working on the screws, 14, 13,
in such a manner as to prevent their rotating, and so cause the turning of the screws to

page_text: effect a longitudinal movement of the said nuts along their respective screws. The
nut, 23, is adapted with a depending adjustable cutter or marker, 24, secured by a
screw, 25; and the nut, 22, is adapted with a rising pivot, 26, which is loosely encircled
by an oblong block, 27, which is secured by a washer, 28, and nut, 29. Projecting
from the top of the limb, 10, is a second pivot, 30, which is similarly adapted with a
block, 31, washer, 32, and nut, 33. The blocks, 27, and, 31, respectively occupy the
said cross slots, 8, and, 9, in the said block, 7, and are respectively adapted to slide in
such slots as the said limb is swung round. The limb and its attachments are suspended
from the block, 7, so as to be capable of being freely swung round under the same by
the said washers 28, 32, which overhang the slots, 8, 9, and rest on raceways, 34, 35,
formed in the upper part of the block, 7, under the top plate, 5.
The apparatus can be used for marking or cutting ellipses the major and minor axes
of which may vary between the greatest and least distances the blocks; 27 and 31,
can be set apart in their respective grooves, and this is effected by turning the
screw, 14, of the block, 27, as required, and the size of the ellipse may be varied by
shifting the marker or cutter, 24, along its screws, 13, as desired. The dotted diagram
projecting from Fig. 1, represents the formation of part of an ellipse by swinging the
limb, 10, round with the blocks set apart at the distance indicated.
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 hereinbefore described improved apparatus for marking or cutting ellipses.
2. The combination in apparatus used for the purpose of the Invention of the grooved
-block, 7, pivoted blocks, 27, 31, and adjusting screw, 14.
Dated this 21st day of July 1888.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C.,
Agents for the Applicant.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C.,
Agents for the Applicant.