Improvements in Machinery for Shaping the Heels of Boots and Shoes.
Year: 1891

page_text: Date of Application, 13th Oct., 1891
Complete Specification Left 13th July 1802-Accented 20th Aug. 1802
PROVISIONAL SPECIFICATION.
[Communicated from abroad by KEATS MASCHINEN GESELLSCHAFT (a Joint
Stock Company), of No. 10, Schäfergasse, Frankfurt-on-Main, in the Empire
of Germany.]
Improvements in Machinery for Shaping the Heels of Boots and
Shoes.
I, ALFRED VINCENT NEWTON of the Office for Patents, 6 Bream's Buildings,
Chancery Lane in the County of Middlesex, Patent Agent, do hereby declare the
nature of this invention to be as follows:-
This invention relates to improvements in machinery for shaping the heels of
boots and shoes.
In machinery of this class, it has hitherto been the practice to use, in connection
with the rotary cutter, a guide which remained fixed in its adjusted position, its
adjustment serving, in some cases, to cover a portion of the rotating cutter, and
thus virtually to contract, for the time being, the length of such cutter, to suit
varying depths or thicknesses of heels.
As, however, the seat of the heel is not made parallel to the tread, and in
consequence the depth of the heel varies, it being less at the waist than at the back
of the heel, this contraction of the acting surface of the cutter prevented the finish
of the paring of the heel at its deepest part. It is to remove this defect, that the
present invention is designed.
To this end the crease guide is mounted on an arm which is pivotted to a bracket
fixed to, and adjustable on the bearing of the cutter spindle.
Pivotted to this guide arm, is a forked rod, which embraces a fixed pin
projecting from the bearing, and it is held in contact therewith by the tension of a
spring.
By this mode of mounting the crease guide, the attendant has merely to press
back the guide, as the depth of the heel presented to the cutter increases, to enable
the whole depth of the back of the heel to be acted upon by the cutter. On
relaxing the lateral pressure on the crease guide, it will be drawn inwards by the
spring, and thus take up the proper position for ensuring the protection of the
"upper" from the action of the rotating cutter.
connection with this yielding crease guide, a rising and falling rest is used for
supporting the boot heel both vertically and laterally.
Fitted in a rigid pendent holder, is a vertically sliding rest bar, from which
projects a rest pin. This rest bar is supported in its holder, in any desired position,
by a treadle, on which the workman's foot rests while he is presenting the boot
heel to the shaping cutter.
The tread of the heel bears against the rest bar to obtain the required lateral
support, and the heel, as it is presented to the cutter, rolls upon the horizontal
rest pin.
It will now be understood that as the attendant turns or rolls over the heel to
present its sides and back to the rotating shaping cutter, the crease guide will
yield laterally to the increasing depth of the heel, and will again advance towards
the rest, as the contracting depth of heel is presented to the action of the cutter.
The shape and position of the crease guide with respect to the cutter, is such
that it will stand in advance of the cutter, and form a guard to protect the upper
leather from injurious contact with the cutter.
As the machine is provided with various forms of rotary cutters, to suit the
varying requirements of the trade, the crease guide arm is made adjustable on its

page_text: bracket, to enable the crease guide to take up the proper position with respect to
the various shapes of cutters. Two or more pin holes are formed in the bracket
to receive the pivot pin on which the arm.rocks, and by thus shifting the fulcrum,
the position of the crease guide is, in its movements, always kept equidistant from
the cutter. The bracket which carries the guide arm is adjustable in the line
of the cutter-spindie.
To provide for the varying diameters of cutters used, the crease guide is made
adjustable on its arm by means of a screw, which advances or retracts it in a slide
formed in the arm.
Similarly, the rest is provided with two adjustments. These are obtained by
shifting the pendent holder either in a direction parallel with, or at right angles to
the cutter spindle, to suit the work in hand, and then fixing the holder in its adjusted
position.
10th 1
Datah 1001
COMPLETE SPECIFICATION.
Improvements in Machinery for Shaping the Heels of Boots and
Shoes.
I, ALFRED VINCENT NEWTON of the Office for Patents 6 Bream's Buildings,
Chancery Lane in the County of London, Patent Agent, 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 :-
This invention relates to improvements in machinery for shaping the heels of
boots and shoes.
In machinery of this class, it has hitherto been the practice to use, in connection
with the rotary cutter, a guide which remained fixed in its adjusted position, its
adjustment serving, in some cases, to cover a portion of the rotating cutter, and
thus virtually to contract, for the time being, the length of such cutter, to suit
varying depths or thicknesses of heels.
Ae, however, the seat of the heel is not made parallel to the tread, and in
consequence the depth of the heel varies, it being less at the waist than at the back
of the heel; this contraction of the acting surface of the cutter prevented the finish
of the paring at the heel at its deepest part.
It is to remove this defect that the present invention is designed.
To this end, the crease guide is mounted on an arm which is pivotted to a
bracket fixed to, and adjustable on, the hearing of the cutter spindle.
Pivotted to this guide arni is a forked rod, which embraces a fixed pin
projecting from the bearing, and it is held in contact therewith by the tension of a
spring.
By this mode of mounting the crease guide, the attendant has merely to press
back the guide as the depth of the heel presented to the cutter increases, to enable
the whole depth of the back of the heel to be acted upon by the cutter. On
relaxing the lateral pressure on the crease guide, it will be drawn inwards by the
spring, and thus take up the proper position for ensuring the protection of the
upper" from the action of the rotary cutter.
In connection with this yielding crease guide, a rising and falling rest is used
for supporting the boot heel both vertically and laterally.
Fitted in a rigid pendent holder is a vertically sliding rest bar, from which
projects a rest pin. This rest bar is supported in its holder in any desired position
by a trendle, on which the workman's foot rests while he is presenting the boot
heel to the shaping cutter.
The tread of the heel bears against the rest bar, to obtain the required lateral

page_text: rest pin.
In the accompanying drawing, illustrating the invention :—
Fig. 1 is a partial plan view of a paring machine; and
Fig. 2 is a front elevation.
A is the cutter spindle, mounted in bearings in the standards B of the frame.
The paring tool or cutter b, carried at one end of the spindle A, is rotated at high
velocity by means of the pulley a. The bracket support c, carrying the arm d and
crease guide g, is capable of being adjusted longitudinally on the sleeve bearing,
and secured by a screw. This arm d, as well as the bracket support c, is provided
with a series of holes 1. 2. 3. Into one set of these holes, the pin or bolt e is
inserted, which serves as a pivot for the arm d. At its front end, the arm dis
provided with a guiding socket for the stem of the crease guide g. In this socket
guide, the position of the crease guide may be adjusted by the screw f. The
crease guide, mounted in the manner described, will move on the line of one of
the circles 1, 2, 3, corresponding to the profile of the cutting tool inserted into
the machine, the pivote of the arm d being adjusted in the hole 1, 2 or 3, according
to the profile of the cutter in use.
By this movement, corresponding to the cutting line of the tool, the crease
guide y will make up or balance the difference between the distance y in the
commencement and end of the paring operation (see Fig. 4), and the distance & in
the middle of the paring operation (see Fig. 3).
If a cutter or paring tool is to be removed from the paring machine, and another
substituted for paring a heel of a different profile, it is only necessary, in order to
make the movement of the crease guide correspond to the cutting line of the newly-
inserted tool, to remove the bolt or pin e from, say, the hole 1, into the hole 2 or 3-;
the crease guide will then move in the circle 2 or 3', as the case may be.
A coiled spring i, which is fixed to the upright, tends to bring the crease
guide g. toward the cutter or tool b. To one end of this spring i, a gut string & is
fixed, which is carried around the guide roll t, and attached to the hook m, which
projects from the arm d.
The movement of the crease guide towards the cutter or tool, is limited by a
bar π, which is pivotted at n' to the socket guide of the arm d, and, with its forked
rear end, embraces a pin n³, which projects from the sleeve bearing.
Independently of the crease guide, the bracket holder o is bolted on the sleeve
bearing of the cutter spindle, and carries the sliding rest bar p. This bracket
holder o is capable of being adjusted longitudinally in position, and secured by a
set screw. The pendent holder o' fits in a guiding socket in the bracket o, and may
be adjusted, and set sideways, by means of a screw and counter nut, so as to be
adapted in a position to suit tools and cutters of different diameters.
Within the holder o', the sliding rest bar p will move once up and down during
the operation of paring a heel. Projecting from this rest bar is a rest pin p², on
which, at the commencement and at the end of the paring operation, the face or
breast of the heel will rest, while during the paring of the rear part of the heel,
the side faces of the heel will bear on the rest pin. The up and down movement
of the sliding rest bar is produced by a treadle, worked by the foot of the operator.
If the cutter or paring tool is to be changed for one of another profile, it is
only necessary to unhook the gut string & from its hook m, and to turn the crease
guide in a backward direction, away from the cutter, so as to make room for
removing the old and inserting the new cutter, after which the gut string is
re-attached to its hook m.
It will now be understood that as the attendant, during the paring operation,
turns or rolls over the heel to present its sides and back to the rotating shaping
cutter, the crease gnide g will yield laterally to the increasing depth of the heel,
and will again advance towards the rest bar p, as the contracting depth of heel is
presented to the action of the cutter.
The shape and position of the crease guide g with respect to the cutter, is such,

page_text: that it will stand in advance of the cutter, and form a guard to protect the upper
leather from injurious contact with the cutter.
As the machine is provided with various forms of rotary cutters, to suit the
varying requirements of the trade, the crease guide arm d is made adjustable on
its bracket c, to enable the crease guide to take up the proper position with respect
to the various shapes of cutters. The pin holes are formed in the bracket c, to
receive the pivot pin e, on which the arm d rocks, and allows of the shifting
of the fulcrum, so as to enable the crease guide, in its movements, to always
maintain its position with regard to the surface of the cutter. The bracket c
which carries the guide arm d, is adjustable in the line of the cutter spindle.
To provide for the varying diameters of cutters used, the crease guide g is made
adjustable on its arm d, by means of a screw, as above described, which advances
or retracts it in a slide formed in the arm.
The two adjustments of the rest are obtained by shifting the pendent holder o¹
either in a direction parallel with, or at right angles to, the cutter spindle, to suit 1
the work in hand, and then fixing the holder o in its adjusted position.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me from abroad, I declare that what I claim is :-
The mechanism herein shewn and described for guiding and supporting the heels
of boots and shoes during the paring operation, provided with a yielding crease
guide constantly pressed towards the cutter, and capable of being adjusted so that
its movement throughout the paring operation, shall be equidistant from the
cutting line of the cutter in use, and having a sliding rest bar capable of motion
in a vertical direction, substantially as described with reference to the drawing.
Dated this 13th day of July 1892.
2
NEWTON & SON,
Agents for the Applicant.