Improvements in Machinery for Cutting or Turning Oval and other Shaped Discs.
Year: 1887

page_text: Date of Application, 24th Feb., 1887
Complete Left, 24th Nov., 1887
Complete Accepted, 20th Jan., 1888
PROVISIONAL SPECIFICATION.
Improvements in Machinery for Cutting or Turning Oval and other
Shaped Discs.
I ARTHUR THOMAS FREDERICK ROSE of Himley Road Dudley in the County of
Worcester Manager do hereby declare the nature of my said invention to be as
follows:-
This invention has for its object improvements in the machinery for forming or
cutting oval discs by which I am able with the aid of an ordinary tool to cut ovals
in metal, glass, wood, papier mache or other material in a simple true and effective
This apparatus will not only form an ellipse of any size or proportion but
meets a long felt want by readily and easily producing other figures and at the same
time it can be as quickly converted into an ordinary apparatus for cutting circular
objects.
manner.
I will explain my invention as applied for cutting metal, trays, glass, discs or
similar articles with say revolving cutters. Fixed to any suitable bed plate are four
short standards which support two horizontal bars running parallel to the bed and
upon these horizontal bars a cramp is made to slide or reciprocate. This cramp has
top and bottom arms, the lower one slides upon the horizontal bars and the upper
one supports a short vertical shaft or screw having at its lower end a gripping
plate for securely holding the work and provided at the top with a handle or other
ineans for tightening the same. The lower arm of the cramp supports a second
short vertical shaft having another gripping or top for holding the work in con-
junction with the upper one having fixed at its lower end a cross bar with projections
or grooves underneath at at each end. These projections or grooves operate against
a straight edge or projections which are formed in or on an interchangeable plate or
template which is fixed to the bed underneath and as the work revolves the projections
slide in the grooves or on the edges of the said plate and cause the cramp or crane to
slide on the horizontal bars at the same time as the work revolves thus giving the
desired shape i.e. in the case of ovals only. The distance between the two projections
on the bar regulates the differences in the two diameters.

page_text: For the purpose or revolving. the plate or material a handle is fixed to one end of a
shaft mounted in the hottom arm of the crane having at its other end a pair of bevel
or mitre wheels one of which is forined round the lower gripping plate. Circles may
be formed by simply removing the bar and guides
Irregular shapes may be formed by arranging a revolving template of any required 5
shape to operate upon a fixed stud upon the cramp.
Dated this 22nd day of February 1887

page_text: COMPLETE SPECIFICATION.
Improvements in Machinery for Cutting or Turning Oval and other
Shaped Discs.
I ARTHUR THOMAS FREDERICK ROSE of Himley Road Dudley in the County of
Worcester Manager 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 has for its object improvements in the machinery for forming or
cutting oval discs by which I am able with the aid of an ordinary tool to cut ovals
in metal glass wood Papier mache or other material in a simple true and effective
manner. This apparatus will not only form an ellipse of any size or proportion
but meets a long-felt want by readily and easily producing other figures and at the
same time it can be as quickly converted into an ordinary apparatus for cutting
circular objects.
I will explain my invention as applied for cutting metal trays, glass discs or similar
articles with say revolving cutters. Fixed to any suitable bed plate are four short
standards which support two horizontal bars running parallel to the bed and upon
these horizontal bars a cramp is made to slide or reciprocate. This cramp has top
and bottom arms the lower one slides upon the horizontal bars and the upper one
supports a short vertical shaft or screw having at its lower end a gripping plate for
securely holding the work and provided at the top with a handle or other means for
tightening the same. The lower arm of the cramp supports a second short vertical
shaft having another gripping plate at top for holding the work in conjunction with
the upper one having fixed at its lower end a cross bar with projections or grooves
underneath at each end. These projections or grooves operate against a straight edge
or projections which are formed in or on an interchangeable plate or template which
is fixed to the bed underneath and as the work revolves the projections slide in the
grooves or on the edges of the said plate and cause the cramp or crane to slide in the
horizontal bars at the same time as the work revolves thus giving the desired shape,
i.e. in the case of ovals only. The distance between the two projections in the bar
regulates the differences in the two diameters.
For the purpose of revolving the plate or material a handle is fixed to one end
of a shaft mounted in the bottom arm of the crane having at its other end a pair of
bevel or mitre wheels one of which is formed round the lower gripping plate.
Circles may be formed by simply removing the bar and guides.
Irregular shapes may be formed by arranging a revolving template of any required
shape to operate upon a fixed stud upon the cramp.
In order that my invention may be clearly understood and more easily carried
into practice I have appended hereunto two sheets of drawings upon which I have
illustrated one of my machines in seven figures and diagrams which enable others
to carry the same out in machines for other similar purposes.

page_text: Figure 1 (Sheet 1 of Drawings) is a general- side elevation showing the machine
complete upon one bed or base A. The portion B carrying the circular cutters b¹
and and operated by the handle C forms no part however of my invention. The
left hand portion E is the subject of my invention and I have therefore shown the
various details in a second sheet.
Figure 2. (sheet 2. of drawings) is a longitudinal sectional elevation right through
the part E and its bed D as well as through the operating spindle and parts.
Figure 3. is a sectional front elevation looking to the left on line 1. 2.
Figures 4. 5 and 6 are plan diagrams of three positions through which the cramp
or pivot slide E passes in producing an oval figure.
Figure 7 (sheet 1) illustrates one of the many possible forms of irregular plates
for producing irregular figures in the machine.
The cramp E is a very important part of my invention as it holds the disc or
plate M while it is cut or formed or operated in any desired manner by the apparatus
cutters or grinders or other part B which forms no part of my invention.
The disc M is held between the two gripping plates and h¹ the upper ¹ being
operated by the screw K which forces it down upon the face h¹ these faces being
provided with leather or other material to suit the substance which composes M.
The upper plate k turns loosely upon the screw K by means of the pin 2 or other
equivalent device and the lower plate is attached to the shaft H which also carries
at its lower end the cross bar or plate N which is fitted with grooves or projections n'
and n². The interchangeable plate or template R carries the two pins 1 and 2
which may be adjusted in their relationship to each other by means of the nut 3 under
the plate F so that the pins may be brought nearer or farther apart according to the
proportion of the oval to be cut for the machine is shown upon the drawings to cut
ovals. The cramp E is pivoted by the pin d² in the slot d' and the action is as
follows: The handle or pulley or other driver P being turned the bevel pinion pl
revolves the shaft H but as the shaft revolves the bodily position thereof is regulated
by the pins and which operate through suitable slide blocks in the grooves n¹
and n² and as these pins are fixed and will not move the cramp is manipulated bodily
thereby upon the part D which is illustrated by the three Figures 4, 5 and 6 the
front end e moving considerable at some parts of the revolution of the shaft H but
being always under the control of the plate or template R. To form irregular figures
it is only necessary to exchange R for any plate S such as shown by Figure 7 having
the groove s or a projection but in this case the plate N would carry a fast pin which
would enter the groove s' and thus as the shaft H revolves the part el of the cramp E
would be forced to move in the irregular line of the groove s or template S.
forming circles it is only necessary to remove the part R entirely and then to fasten
down the front e¹ of E by an additional screw e² when the machine is ready. The
apparatus is therefore simple compact and easily adapted to the various purposes
required.
my
In
Having now particularly described and ascertained the nature of said
invention and in what manner the same is to be performed I declare that what
I claim is
The improvements in machinery for cutting or manipulating oval or other shaped
discs consisting of the cramp E operated by the parts N and R for oval forms and N
and S for irregular shapes with I removed for circles substantially as and for the
purpose herein set forth.
1 1
J. 1997