Machinery for Paring the Edges of Boot and Shoe Soles.
Year: 1890

page_text: Date of Application, 13th June, 1890
Complete Specification Left, 13th Mar., 1891-Accepted, 16th May, 1891
PROVISIONAL SPECIFICATION.
Machinery for Paring the Edges of Boot and Shoe Soles.
I, CHARLES HENRY SOUTHALL, of 18, Chapel Lane, Headingley, Leeds,
Machine Maker, do hereby declare the nature of this invention to be as follows:-
The foreparts of boots and shoes being curved, it is necessary to construct a
machine for paring the edges thereof in such a manner that the knife or tool may
work in a radius to suit the curves of the various sizes and sorts. To effect this, in
my machine, I hold the boot sole in a suspended position on a curved form, radiat-
ing from a fixed centre, and hold it firmly there by a properly shaped lever with a
bedding piece, hinged to the end. This bedding piece, when forced down fits the
curved form, and is intended to press on the insole of a boot or shoe down to the
required radius and hold it firmly till the paring is completed. I then hang the end
of a lever to a universal joint, the centre of which joint suits the radius before
inentioned. On this lever I attach the paring knife opposite the sole to be pared,
and cause it to move along the edge by jointing the off' end of the said lever to
another universal joint working on an arrangement of slides, moved and turned in
a proper direction by a suitable cam fixed to a shaft and worked by bevel wheels
and a winch handle; the off end of the lever 1 draw toward the boot centre by
means of adjustable springs which are held tight whilst in action by a catch and
which I make to move and turn round as desired. When paring a boot, therefore,
I slip it on the end of the lever to which is attached the bedding piece and by a
screw, acting on the other end, force down the sole to the required radius, then draw
the tool to the edge by means of springs, and hold these tight by a catch, which all
move in a proper direction, taking the tool along one side, round the toe part, and
then along the other side. The tool I make to expand or contract so that it may
adjust itself to the various thicknesses required.
Dated this 19th day of June 1890.
CHARLES HENRY SOUTHALL.
COMPLETE SPECIFICATION.
Machinery for Paring the Edges of Boot and Shoe Soles.
1, CHARLES HENRY SOUTHALL of 18, Chapel Lane, Headingley, Leeds
Machinist, 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:-
Fig. 1 is a side elevation of my improved machine.
Fig. 2 is a side view of knife holder.
Fig. 3 is a plan of knife holder.
Fig. 4 is an underside view of the carriage.
Fig. 5 is a plan of the cam.
Fig. 6 is a plan shewing the joints of connection.
Fig. 7 is the slide for carrying the centre on which the carriage rests and works.
The same letters apply to all the parts shewn in the various figures.
A. is the frame for carrying the various parts. B is a bracket to which I hinge
the curved plate C on which I place the sole part of the boot and secure it firmly
by the bedding piece D inside the boot and hinged to the lever E which lever I
work by the screw F by means of the winch G. The screws H. HI use for giving
a correct position to the plate C. K is the centre of the curvature of the plate Č
and supports the universal joint L in which the stud M works which stud is screwed
to the bracket N to enable it to turn in any direction. To the bracket N I fix one
end of the lever O the other end being jointed as shewn in Fig. 6 by the joints a a
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to a piece d. In the proper place on the lever OI place the knife-holder b and
control it by the handle c. The pieced works on the stud e (Fig. 6) screwed into
the round slide, to this I attach two of the ends of two spiral springs g, the
other ends being held by the piece on the rod k. The slide f is bored to work on
the turned rod which works in bearings in the carriage m. This rod is notched
to receive the catch which holds it in its proper position. The carriage m rests
on the circular piece n which is screwed to the slide in the proper place (Fig. 7)
and turns on the stud o. The semicircular piece p is fixed on the carriage and used
to keep the carriage m in a right angled position when it comes in contact with
the stops and s (Fig. 7) and the roller t on the carriage is employed to work in
the slot in the cam u (Fig. 5). The slide is employed for carrying the circular
piece n as a centre to enable the carriage to traverse longitudinally the length of a
boot sole till it reaches the centre of the toe part when it turns round the toe and
goes along the other side.
The slide is supported by the turned rods to which
work in holes bored in the frame A. and is further supported by the two studs a
the ends of which rest on the table part of the frame A. The sliding stop s (Fig. 7)
slides in the bevelled pieces y y and is used for locking and releasing the carriage m
at the proper time. It is worked by a projection underneath coming in contact
with the centre shaft . It will be seen on reference to Fig. 4 that when the
carriage m is turned round on the stud o, one end of the semicircular piece will
come in contact with the stop and hold the carriage in a right angled position to
the slide v. This semicircular movement only occurs when the centre stil o comes
directly under the centre of the boot toe to enable the knife tool to get round, and
as it can turn no further it becomes fixed, and consequently the slide e carrying the
circular piece n and carriage m is forced in a straight line under the middle of
the boot being pared. As the tool cuts only in one direction, viz. forward, when the
paring is complete the pressure of the springs yg is released and the handle turned
in a contrary direction to bring the tool in position for another operation. The
slide stop, s is therefore used in the return movement to act exactly as the fixed
stop acts in the forward one. The difference being that the slide s requires to be
pushed into gear and out at the proper times. It is pushed into gear by its end
coming in contact with the frame of the machine and thrown out by the opposite
end coming in contact with the top end of the centre shaft Z. The cam u (Fig. 5)
is keyed on the end of the short shaft Z and is turned by the bevel wheel a². These
being operated by the winch handle 2. The knife holder (Figs. 2 & 3) is made of
a casting e² fixed to a plate d. The knife being fixed at the proper place behind
the guide. This guide is so constructed that the form of the boot sole may
always be maintained. It is therefore made adjustable, that is, made to expand to
suit the thickest soles and contract to the thinest. It is also made to regulate the
thickness of shaving cut from the edge of the sole by the grooved regulating
screw (Fig. 3). It works on the small angle plate 2 which slides on the hinged
lever in such a manner that the end of the said plate may act also as the guard 2.
The top guard works in a recess and is held in position by a screw m² (Fig. 3).
The spiral spring n' is employed for contracting the angle plate 2 and guard k². The
screw o² is employed to prevent the accident by the guard opening too far.
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
1st. The general arrangement and construction of the machine.
2nd. The radius and centre K arrangement.
3rd. The slide, carriage m and cam u and their arrangements.
4th. The knife holder as described.