Improvements in or relating to Machinery for Paring the Heels of Boots and Shoes.
Year: 1889

page_text: Date of Application, 12th Aug., 1889
Complete Specification Left, 10th May, 1890-Accepted, 21st June, 1890
PROVISIONAL SPECIFICATION.
Improvements in or relating to Machinery for Paring the Heels of
Boots and Shoes.
We, MARSHALL HENRY PEARSON and CHARLES BENNION, both of the Union Works,
Blue Boar Lane, Leicester, in the County of Leicester, Mechanical Engineers, and
JOHN CHRISTOPHER GUNTON, of 47 Arundel Street, Leicester, aforesaid, Foreman
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in heel paring machines in which the boot
or shoe is held securely in position on an oscillating frame by a screw with the top
piece next to the copy, and turned round by a handle on the right, whilst the
knife is held to the seat with the left hand, taking off a shaving and leaving the heel
smooth and to size at one cut.
Hitherto in this class of hand-power machines the knife (made of thin steel shaped
to the finished curve of the heel) has been mounted upon a frame which is pivoted
to an arin or piece connected by a stud and nut to a bent or forked lever (carrying
a runner working upon the edge of a cam or top piece block mounted upon the
same shaft as the counter weighted handle) that the knife may be readily adjusted
to its work and when set so that it may conform to the curve of the heel as it alters
in turning round the boot.
In machines as at present constructed provision is made for adjusting the knife to
the varying thicknesses of heels by pivoting the said bent or forked lever to a suitable
bearing bolted to a bracket attached. to the machine in such a manner that the whole
of the parts holding the knife may be moved to the right or left as the thickness of
the heel requires. And in order to keep the knife to its work, a small guide is
fixed to the holder at the back of the knife, said guide being provided with an
end adapted to run in the crease or space between the sole and upper.
practice great difficulty has been found in keeping the end of the guide in the crease
as the drag on the knife withdraws the end therefrom and marks or damages the
upper.
But in
Now the object of our invention is to overcome these difficulties, and at the same
time to provide for the adjustment of the knife to the varying thicknesses and sizes of
heels.
In carrying our invention into practice we dispense with the guide fixed to the
kuife holder, and with the bracket and bearing bolted thereto, and either pivot the
bent or forked lever to a bracket fixed to the standard of the machine, or mount it
upon the end of a screw (armed with a hand wheel working in a bearing formed
for its reception on the said standard so that the lever may be moved bodily in and
out and at the same time permitting of the lever rising or falling as required. When
the lever is pivoted to a bracket its lower or free end may be adjusted to the
desired position by means of a suitable second screw or bracket.
By the above described means the knife is free to move up and down to suit the
varying heights of heels, and allow of it swivelling, and may also be adjusted to
or left during the
any required position without fear of it being drawn to the right
paring operation, or damaging or marking the boot upper.
Dated this Ninth day of August 1880.
MARSHALL HENRY PEARSON.
CHARLES BENNION.
JOHN CHRISTOPHER GUNTON,

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Machinery for Paring the Heels of
Boots and Shoes.
We, MARSHALL HENRY PEARSON, and CHARLES BENNION, both of the Union Works,
Blue Boar Lane, Leicester, in the County of Leicester, Mechanical Engineers, and
JOHN CHRISTOPHER GUNTON, of 47 Arundel Street, Leicester, aforesaid, Foreman
"Engineer, 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 heel paring machines in which the boot
or shoe is held securely in position on an oscillating frame by a scrow with the top
piece next to the "
copy and turned round by a handle on the right, whilst the
knife is held to the seat with the left hand, taking off a shaving and leaving the heel
smooth and to size at one cut.
Hitherto in this class of hand-power machines the knife (made of thin steel shaped
to the finished curve of the heel) has been mounted upon a frame which is pivoted
to an arm or piece connected by a stud and nui to a bent or forked lever (carrying
a runner working upon the edge of a cam or top piece block mounted upon the same
shaft as the counter-weighted handle) that the knife may be readily adjusted to its
work and when set so that it may conform to the curve of the heel as it alters in
turning round the boot.
In machines as at present constructed provision is made for adjusting the knife to
the varying thicknesses of heels by pivoting the said bent or forked lever to a suitable
bearing bolted to a bracket attached to the machine in such a manner that the whole
of the parts holding the knife may be moved to the right or left as the thickness of
the heel requires. And in order to keep the knife to its work, a small guide is fixed
to the holder at the back of the knife, said guide being provided with an end adapted
to run in the crease or space between the sole and "upper."
difficulty has been found in keeping the end of the guide in the crease as the drag
But in practice great
on the knife withdraws the end therefrom and marks or damages the "
Now the object of this invention is to overcome these difficulties, and at the same
upper."
time to provide for the adjustment of the knife to the varying thicknesses and sizes
of heels.
In carrying our invention into practice we dispense with the guide fixed to the
knife holder, and with the bracket and bearing bolted thereto, and either pivot the
forked lever to a bracket fixed to the standard of the machine, or mount it upon
the end of a screw (armed with a hand wheel) working in a bearing formed for its
reception on the said standard so that the lever may be moved bodily in and out and
at the same time permitting of the lever rising or falling as required.
lever is pivoted to a bracket its inner end may be adjusted to the desired position by
When the
means of a suitable screw or its equivalent.
In the drawings
Figure 1 is a front elevation, Fig. 2 a plan looking at the top, Fig. 3 a sectional
olevation on line ex fig. 1. of a heel paring machine constructed according to this
invention. Figs. 4 and 5 are respectively a part elevation and a part plan of a
method of pivoting the lever J and adjusting the paring knife.
At
A is the base of a standard A which may be of any suitable shape and to which
is pivoted so as to work upon the V centres a a' the radius arm B provided at its
upper end with a bearing in which is mounted a shaft, or spindle C capable of
being rotated or oscillated through the greater part of a revolution by a lever or
handle D (counterweighted at D keyed or otherwise fixed upon the spindle.
the other end of the spindle C are mounted and keyed or fixed a cam E for giving
motion to the radius arm B, a cam F for regulating the angle of the paring knife G,
and a template H (hereafter termed the "copy") of the exact finished shape and
size of the "top piece" of the heel to be pared.

page_text: The knife G (which is made of thin steel, and may be of varying shapes to suit the
different shapes and curves of heels) is mounted in a holder Gand retained therein
by the clamps g g and screws g' g as shown at Fig. 1. The holder G' is pivoted
at g to an arm or casting I (hereafter termed the sector) which in turn is pivoted
at i to a lever or link J mounted and jointed on the end of a screw K (provided at
the opposite end with a hand wheel K') carried in a bearing a provided for its
reception on the standard A'. The knife holder G may be provided with a handle_G³
by means of which the operator may partially control the action of the knife G. For
some classes of work it may be found necessary to attach a guide G³ to the side of the
holder; when this is necessary the guide G³ is mado to hear upon the sole of the boot
in such a manner that its projecting edge G may be inserted in the crease or space
between the "upper" and the sole of the boot to form a guide for the knife.
On the sector I is mounted a spring L which is employed for keeping the knife
holder G in an approximately horizontal position. The spring L is of such strength
as will permit of the holder G¹ turning on its pivot when required. In the sector I is
also cut or formed a slot in which an adjustable die works for varying the pitch
or cutting angle of the knife. The die is mounted on the screwed end of a stud or
pivot (carried in the end of link or lever J) so that when it is tightened the sector
is held firmly between the die and the collar formed on the stud thus fixing the
relative position of the sector with the stud but at the same time allowing the sector to
move freely with the stud. When it is required to alter the pitch of the knife the
sector is loosened by means of a key on the square end of the stud, the sector is then
raised or lowered as desired, and tightened again. On the stud, and within the
outer end of lever J may be mounted a runner or bowl for the purposes to be
immediately described. When once the pitch or cutting angle of the knife G has been
adjusted it is kept constant by allowing the runner to work and rest upon the
perimeter of the cam F which thus automatically regulates the knife to the varying
curve of a heel. The shape of the various "lifts" or thicknesses of leather composing
a heel is usually somewhat approaching a semi-ellipse and has therefore a part v fig. 6
approximately an arc of a circle, and two parts w w figs. 6 and 7 nearly approaching
a straight line and in order to effectually pare heels of this shape it is found necessary
in addition to the rotary or oscillating motion to give the heel a practically lateral
motion at the time the knife is paring the part w of the heels approaching a straight
line. This is effected by the cam E, keyed to the spindle C, which when the spindle
is rotated bears upon the standard A¹, or (as shown in the drawings at Fig. 3) a
separate piece A' may be attached to the standard, and thus imparts to the spindle C
a slightly circular but practically lateral motion.
The "copy" may be provided with an adjustable gauge h to facilitate the action
of putting the boot or shoe in the "jack." M, as well as aid in retaining the boot in
the necessary relative position with the "
copy." The "jack" M may be somewhat
Ushaped as shown, one arm of which is mounted on the spindle C between the
cauis E and F whilst the other arm forms a bearing for the screw N which is armed
at its inner end with a plunger or foot O, and at its outer end with a hand wheel P.
R is a stop for preventing the jack being carried round too far.
Instead of adjusting the position of the lever or link J, sector I and knife holder G'
as shown at Figs. 1 to 3, we in some cases joint the lover J to a swivel J¹ (figs.
and 5) which is pivoted to a bracket A fixed on the standard A'. In a slot a in a
second bracket A fixed or cast on the standard A' slides the screw K (between
the bosses kk) the end of which works in a nut J2 formed on or attached to the
lever J. This arrangement answers well where a small amount of adjustment is
required, but where a greater amount of adjustment is necessary we prefer to use the
arrangement illustrated at Figs. 1 to 3 as the parts are not so liable to become locked
or jammed when the screw K is rotated.
The operation of paring the heel of a boot is as follows:
The knife G, sector 1 and lever J are thrown back out of the way until the lover J
rests upon the stop Q. The foot 0 of the "jack" M is then drawn back by screw N
to adunit of the boot or shoe being placed in the required position, that is with the

page_text: "
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73
top lift" of the heel against the "copy" H. The foot O is then moved forward and
pressed against the inside of the boot so as to press the heel firmly against the
copy" and to retain it in its relative position with the " copy" during the paring
operation. The knife, sector, and lever are then returned to the position shown in
the drawings (Figs. 1 to 3) for the knife to rest upon the perimeter of the "
copy;
and when a guide G³ is used it will then rest upon the sole of the boot with its
projection G between the sole and the " upper." The handle is then moved to
bring the heel into position shown at Fig. 6 for commencing the cut, and then it is
further moved to complete the paring operation until the heel is in the position shown
at Fig. 7, that is to say, the spindle which carries the cams E and F, "jack" M
and
copy" H is made to rotate through the greater part of a circle, and in doing so
successively brings each part of the perimeter of the heet in contact with the knife
which takes off all superfluous leather leaving the heel pared to the required size and
shape.
The above described machine is also applicable for paring heels before they are
attached to boots or shoes.
Having now particularly described and ascertained the nature of the said Inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is
1. The improvements in heel paring machines substantially as herein described
which improvements consist essentially in mounting a lever such as J upon a screw
such as K (or swivel such as J¹ and parts connected therewith) working in a bearing
or bracket on the main framing of the machine, and connecting said lover by means
of a sector such as I with a paring knife such as G as and for the purposes set
-forth.
2. In a hool paring machine substantially as herein described, the combination of a
knife such as G, holder such as G', sector such as I and parts connected therewith,
and lever such as J mounted on and adjusted by a screw such as K with a
copy
such as H (having an adjustable gauge such as h on its face), the means for actuating
the moving parts of the machine as described, and stop R as and for the purposes set
forth.
3. The combination of the various parts forming the improvements in heel paring
machines substantially as herein described with the mechanism for actuating and
controlling the action of the heel during the paring operation substantially as set
forth and illustrated in the accompanying drawings.
Dated the Ninth day of May 1890.
MARSHALL HENRY PEARSON.
CHARLES BENNION.
JOHN CHRISTOPHER GUNTON.
By W. Fairburn Hart,
Agent.