Improvements in Rough-rounding and Channelling Machines for Boots and Shoes.
Year: 1899

page_text: Date of Application, 9th Feb., 1899
Complete Specification Left, 9th Dec., 1899-Accepted, 27th Jan., 1900
PROVISIONAL SPECIFICATION.
Improvements in Rough-rounding and Channelling Machines for
Boots and Shoes.
I, WILLIAM HENRY DORMAN, of the Green Hall, Stafford, Engineer, do hereby
declare the nature of this invention to be as follows:-
-
The object of this invention is to provide a machine for performing the
operation of rough-rounding and channelling of boots and shoes while the same
are upon the last.
The machine is provided with a driving pulley, friction cone, starting wedge
and toggle hand lever, or treadle, for starting and stopping and has an automatic
brake which comes into action when the driving gear
thrown out.
The frame carries a main shaft provided with suitable cams to operate the
various parts of the machine.
The feeding forward of the shoe is performed by a pair of gripping jaws one
of which takes upon the welt and the other upon the outsole.
Both jaws receive from a suitable cam and connections a to and fro feeding
movement which may be adjustable in amount.
The jaws are operated by means of a suitable cam and lever with connections.
The lower jaw is provided with a slide and pawls which latter engage with
ratchet teeth and are tripped by a cam piece, or other equivalent means are
provided for accomodating varying thicknesses of work. spring closes the
jaw when released from the pawls.
The paring knife is carried on a lever which is operated by a cam so as to
give it the proper movement. It passes through a gap or a slot in one of the
feeding jaws and cuts against the other jaw, a recess being therein provided to
receive the cutting end of the knife.
The channelling knife works also in the gap in the jaw and receives from
the machine a small but rapid vibrating movement in the direction of the depth
and angle of the channel. The position of the knife can be regulated by the
operator, while the machine is at work, by means of an adjustable crank and
knee lever, or the like, so as to cut the channel further in or out as required at
the different parts of the shoe. The knife can also be set by the operator so as
to vary the angle and depth of the channel.
An adjustable gauge is provided for the purpose of guiding the shoe relatively
to the paring knife so as to pare a wider or narrower edge. This gauge takes
always against the shoe itself not against the inseam and is moved by the
operator into different angular positions so as to regulate the distance of the
edge of the sole from the shoe. It is mounted in a segmental race struck from
a centre at or near its operating end and its position is regulated by means of a
curved rack and toothed lever with suitable connections to a treadle, knee lever,
or the like

page_text: This gauge may also be made so that it is capable of being moved forward by
the operator for the purpose of moving the shoe with relation to the knives
when it is desired to pare wider, as at the outside joint of the shoe.
A treadle is provided for opening the channel knife and the feed jaw for
the purpose of inserting and removing the work. Springs return these to their
working positions when the treadle is released..
The boot sole rests on a pair of antifriction rollers which are adjustable as
required.
If desired the machine may be provided with means whereby the operator
may regulate the position of the paring knife and of the feeding jaws instead
of, or in addition to, regulating the angular movement of the above mentioned
gauge. This regulation may be derived from the before mentioned knee lever,
or from a treadle, arranged to operate a segment and rack, or to swing a crank
through an angle the crank being adjustable to and from the centre of its
movement and connected to a sliding frame which carries the feeding jaws and the
paring knife and lever. Or the paring knife and upper jaw only may be moved
in unison, with reference to the gauge, the paring knife being mounted in a slide
on the operating lever and a connection, under the control of the operator, being
made between the knife and the upper jaw.
When so required the operator may be provided with means whereby he may
impart movement, so as to regulate the position of both knives-the channelling
and the paring and may move them either in the same or in opposite directions,
to any desired amount or may cause the one knife to remain stationary while
the other moves to or from it. This may be done by connecting the one knife
to a treadle and the other to a knee lever or by causing the aforesaid knee lever
to oscillate two shafts having double ended arms at their ends with diametrical
slots in which are mounted adjustable sliding crank pins. When the crank
pins are central with the oscillating shafts they impart no movement to the
knives but when set or moved radially away from the centres of their shafts they
impart a movement to their respective knives depending in amount on the distance
from the shaft centre to the crank centre and in direction to the side on which
the crank pin is set off from the shaft centre.
The knee lever may be arranged so that while a side movement of the knee
causes the shafts to oscillate, a pushing movement of the knee will move either
one or both of the crank pins, according as they are connected, to or from the
centres of their shafts.
Hand wheels, or the like, are provided so that the knives and other parts
may be set to suit the work required to be done, and adjustable stops to limit
certain of the knee or treadle movements.
Dated this 8th day of Wahwin 1900
Improvements in Rough-rounding and Channelling Machines for
Boots and Shoes.
I, WILLIAM HENRY DORMAN, of the Green Hall, Stafford, Engineer, do hereby
declare the nature of this invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
This invention has for its object the improvement of a machine for performing
4

page_text: the operation of rough rounding and channelling of boots and shoes while the
same are upon the last.
The machine is provided with a driving pulley, friction cone, starting wedge
and toggle hand lever, or treadle, for starting and stopping and has an automatic
brake which comes into action when the driving gear is thrown out.
The object of the toggle connection is that, as the toggle forms a straight line
while the pulley is in gear with the friction cone, the machine will, on being
started, continue to run after the hand is removed from the starting handle.
The frame carries a main shaft provided with suitable cams to operate the
various parts of the machine.
The feeding forward of the shoe is performed by a pair of gripping jaws one
of which takes upon the welt and the other upon the outsole.
Both jaws receive from a suitable cam and connections a to and fro feeding
movement.
The jaws are operated by means of a suitable cam and lever with connections:
The lower jaw is provided with a slide and pawls which latter engage with
ratchet teeth and are tripped by a cam piece for accommodating varying thick-
nesses of work. A spring closes the jaw when released from the pawls.
The paring knife is carried on a lever which is operated by a cam so as to
give it the proper movement. It passes through a gap or a slot in one of the
feeding jaws and cuts against the other jaw, a recess being therein provided to
receive the cutting end of the knife.
The channelling knife works also in the gap in the jaw and receives from
the machine a small but rapid vibrating movement in the direction of the depth
and angle of the channel.
This vibrating movement may be dispensed with but in any case there is no
movement of the channel knife in the direction of the feed of the work such as
takes place in some other channelling machines as for instance those described
in Specifications No. 1527, A.D. 1892, No. 12069 A.D. 1893 and No. 3497 A.D. 1896.
The position of the knife can be regulated by the operator while the machine is
at work by means of an adjustable knee lever and connections so as to cut the
channel further in or out as required at the different parts of the shoe. The
knife can also be set by the operator so as to vary the angle and depth of the
channel.
For the purpose of guiding the shoe an adjustable guide is provided which
takes always against the shoe upper opposite the edge of the bottom of the
last not against the inseam. It is moved by the operator by means of a suitable
treadle and connections so as to assume different angular positions, its face being
set more upright when acting around the forepart of the shoe, and in order to
keep clear of the full overhanging part of the instep of the last the gauge is
set more horizontal when acting in the shoe waist. There is only one guide or
gauge not two as described in Specifications No. 3497 A.D. 1896, and No. 4426
A.D. 1898, and it acts as a shoe guide only. It does not assist to feed along the
work nor to hold the same nor does it bear upon the welt to resist the cutting
action of the paring knife, or the pressure of the feeding grip but enables the
operator to guide the shoe, with reference to the shape of the edge of the last and
not, with reference to the inseam. During the paring and channelling operation
the gauge does not lose contact with the shoe upper. It is mounted in a seg
mental race struck from a centre at or near its operating end and its position is
regulated by means of a curved rack and toothed lever with suitable connections
to a treadle.
A treadle is provided for opening the channel knife and the feed jaw for the
purpose of inserting and removing the work. Springs return these to their
working positions when the treadle is released.
)
5 The boot sole rests on one or a pair of antifriction rollers adjustable as required.
The paring knife and the feeding jaws with their levers and other connections
are carried in a sliding frame which is capable of being moved to and fro by the

page_text: operator, during the operation of the machine with reference to the before men-
tioned gauge for the purpose of paring the edge of the sole wider or narrower
relatively to the edge of the last.
For the purpose of moving the sliding frame to and fro it is found convenient to
make a connection to the before mentioned treadle which serves to regulate the
angular position of the shoe gauge..
It will be observed from what has preceded that the operator is provided. with
one. treadle for withdrawing the channel knife and the bottom jaw for the
purpose of inserting the work and with another treadle for regulating the angle
of the shoe gauge or guide and for moving the paring knife and feed jaws. with
reference to such gauge. He is also provided with a knee lever for moving the
channel knife relatively to the same gauge.
The operator therefore has the power to move either knife at will either
towards or from the shoe gauge so as to pare either a wider or a narrower edge
and to cut a channel nearer to or further from such edge.
:--
My invention is illustrated by the accompanying drawings in which:-
Fig. 1 is a side view of the machine.
Fig. 2 is an opposite side view.
Fig. 3 is a plan.
Fig. 4 is a front view.
Fig. 5 is a vertical section shewing the feeding jaws and parts in connection.
Fig. 6 is a plan of the same.
Fig. 7 shews the guide in its raised position.
Fig. 8 shews the vibrating shaft.
Figs. 9 and 10 shew the vibrating die.
Fig. 11 shews the gap and bottom jaw.
Fig. 12 shews an enlarged view of a portion of a shoe in the machine.
Fig. 13 shews a side view and
Fig. 14 a plan of the fixed head frame. *
Fig. 15 shews a sectional side view of the sliding head frame with the knife
lever and cam.
Fig. 16 shews a plan of the same.
Fig. 17 shews an opposite side view of the same with the feeding jaw levers and
cam,
i
Fig. 18 shews a sectional front view of the sliding head frame within the fixed
head frame.
Fig. 19 shews a side view of the channel knife and chain driving gear.
The base a supports the column a¹ and head frame
working parts of the machine are arranged.
upon which the various
The driving shaft bis carried in the bearings 62. It is provided with the
loose pulley, cone 6, and wedge 65 in connection with the starting and stopping
handle 66. This handle 66 is mounted on a pivot its lower end s forming the
upper of a pair of toggles of which the lower toggle is connected by a beam 610
(mounted on a pivot 6") with the wedge rod through the intervention of a
trunnion die 613, spring 6 and two collars 615 and 6 The wedge acts upon an
inclined collar 67 to thrust the pulley into engagement with the cone which
is fast on the driving shaft b. While the machine runs the toggles 8 form a
straight line and the spring 14 is compressed so that the handle b need not be
held by the operator.
:
A lever c is mounted on a pivot c¹ and connected to the wedge rod 12 so that 5
as the latter rises it lifts the end 2, link and brake band c' so as to free the
brake disc 5. When the handle 66 is pushed by the operator into the position
shewn in Fig. 1, the toggles 68 bare broken, the rod 62 and wedge b drop, the
cone b' comes out of gear and the brake band c goes on. A spring washer 618 is
provided between the pulley 63 and the cone 6.
Upon the shaft 6 is mounted a cam b¹ which is provided with three grooves d e f.
5

page_text: The groove operates the paring knife which trims or rough rounds the edge
of the boot sole and welt. The knife is clamped in the end of the lever a
which is mounted on a pivot and operated by the cam roll engaging the
groove.d.
The feeding forward of the shoe is performed by a pair of gripping jaws e¹ e²:
the upper one c¹ takes upon the welt, and the lower one upon the sole. The
feeding movement is a horizontal oscillation about the vertical pivot e³ and is
produced by the feed lever et which engages the cam groove e by the roll e³.
The opening of the jaws e¹ e prior to the return movement of the feed, is
performed by the cam groove f operating the roll f and lever f which latter is
carried on the pivot f and provided with pawls f f f which engage ratchet
teeth formed on a piece fo mounted in the vertical slide f in which the vertical
pivot is secured.
The lever et is free to turn upon the pivot e which is provided with a collar e
so that as the pawls.f f f descend and pull down the piece f8 and slide the
lever e descends also. The groove e is made of sufficient depth to allow of the
descent of the roll e.
The upper jaw e¹ is prevented from descending by a plate e between which and
the frame it is free to swing sideways upon the pivot e. The lower jaw e² is
provided with a parallel sided gabe embracing the upper jaw in such a way that
the side movements of the jaw e² are communicated to the jaw c¹ while the former
is free to make its downward movement.
For the purpose of giving a little relief to the upper jaw at the time when the
lower jaw descends a connection is provided between the jaw e¹ and the lever f
The jaw el is formed with two sides e₁0 e¹¹ lying close alongside the central block c
to which it is pivoted by the horizontal pin c while the block e¹ is pierced
vertically for the pivot e³. The ends e e¹ of the jaw are connected by the link e¹6
and universal joints el e18 to the lever f2 so that this latter operates the jaw e¹ to a
slight extent as well as the lower jaw. The lower jaw is held closed upon the
work by the spring f¹ and in order that this spring may be able to follow up
reductions of work substance the pawl tripping plate fi is provided, the corners fi
f13 of which prevent the pawls f f f remaining in gear with the teeth fas
they rise.
The paring knife cuts against the jaw e which is provided with the
recess e and a clearance gap e20 is provided in the jaw & for the paring knife to
pass through.
A sole supporting roller g and the channel knife are carried by a piece h¹ on
the vertical post which is free to rise and fall a little, being supported on the
spring (Fig. 4). The bearings h h in which the post slides are formed on an
inverted pendulum mounted on a pivot in the fixed frame 18 and steadied
by a clamp pin in the slot h. The inverted pendulum can be moved by the
operator, when he so desires, so as to move the channelling knife and the sole
supporting roller g horizontally to or from himself and with regard to the shoe.
This is done by the knee lever 10 which swings the vertical shaft and lever h
through a slight angle. A link and joints connect the lever to the
piece. The amount of movement is determined by set screws 167 which
strike the column a¹ at each extreme movement of the knee. A rapid vibratory
movement in the direction of the depth and at the angle of the channel is given
to the knife k by means of bands or chains i¹ and speed wheels
rotate a small crank shaft . This in turn vibrates the bell crank which is
provided with a crank die 8 and is mounted on the pivot having the knife h
cramped to its end by the screw 18. By slackening the screw 18 and turning
the adjusting screw is the amount of the projection of the knife point above the
edge of the roll g may be regulated and consequently the depth of the channel.
The little arm h20 which carries the screw 19 is secured to the bell crank
The arms which carry the wheels are jointed together so as to
which
.

page_text: permit the pendulum to move and are each made in two portions secured
together so that the chains may be maintained at the proper tension by
increasing or diminishing the length of the arms.
which
The treadle serves to open the machine for the insertion of the work. It is
mounted loosely on the shaft and pulls down the rod and Tee piece
are connected by a link and jaws to the slide f and post h². Depressing the
treadle therefore draws down the jaw, the knife hand roll g.
is
The channelling knife hand the jaws e¹ e² are so carried in the machine that
the operator has power to move them in a horizontal direction to and from
himself relatively to the gauge k, to be hereinafter described. To enable this to
be accomplished the frame which carries the pivots fe³ and slide
arranged to slide horizontally within the main head frame and is held forward
against a set screw a by a spring a. A treadle is provided by which the operator
can push back the frame as against the action of the spring a so as to move back
the jaws ele and paring knife d. The treadle pulls down the rod and leverª
so as, through the shaft, to bring the lever into contact with the screw
carried in the frame and so move the latter back. A rear stop screw. " is
provided to limit the frame movement.
The guage
bears upon the shoe upper near the welt and opposite the edge of
the bottom of the last. It is carried in a curved race by a curved toothed
segment the curve being struck from the point. It is moved about its
point as a centre from the position Fig. 1 to the position Fig. 7 by the treadle /,
shaft and lever drawing down the rod and arm which arm is carried on
a pivot and provided with a toothed sector & engaging the curved segment.
The gauge does not lose contact with the shoe upper during the paring and
channelling operation. It is raised as in Fig. 7 when operating round the fore-
part and lowered as in Fig. 1 when operating in the waist.
It will be observed that the treadle operates both the gauge k and the sliding
frame a³, the gauge being moved prior to the movement of the frame, a slot.
being provided in the upper end of the rod to afford lost motion for this purpose.
If desired the rod may be shortened by the cramping screw 78 so that both
gauge and frame move together.
To accommodate the sliding movement of the frame a the bearings
the vertical shaft h" are arranged so that they may swing a little.
of
The machine is constructed so that the head may be raised or lowered and then
set to accommodate a taller or shorter operator, the column a¹ being telescopic
and the rods being capable of adjustment in length by means of cramping
screws
18
In some cases the operator likes to have the machine inclined towards him,
this can be done by providing a base m with an inclined surface to joint to the
column a¹ as shewn by dotted lines in Fig. 1. In this case the line n¹ would
represent the horizontal floor line.
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. In a machine for operating upon the soles of boots and shoes the use of a
shoe guide or gauge which, while remaining constantly in contact with the
upper, can be moved by the operator as desired into different angular positions
about its point for the purpose of guiding the shoe. with reference to the edge of
the last bottom, as described.
2. In a machine for operating upon the soles of boots and shoes a shoe guide
or gauge which normally lies at such an angle that its end serves as a guide in
the waist of the shoe but which can be turned by the operator about such end
until its face lies at any desired steeper angle and serves as a guide around the
forepart of the shoe, as described. .
3. In a machine for operating upon the soles of boots and shoes the use of a

page_text: shoe guide capable of being moved into different angular positions about its end
as a centre while the machine is in operation.
4. In a machine for operating upon the soles of boots and shoes the combination
of a shoe guide capable of being moved into different angular positions about its
end with a paring knife.
5. In a machine for operating upon the soles of boots and shoes the com-
bination of a shoe guide capable of being moved into different angular positions
about its end with a paring knife and a channelling knife.
6. In a machine for paring the soles of boots and shoes the use of a shoe guide
which bears always upon the upper near the welt and which can be moved into
different angular positions about its end during the operation of the machine so
as to guide the shoe relatively to the shape of the lower. edge of the last.
:
7. In a machine for channelling the soles of boots and shoes the use of a shoe
guide which bears always upon the upper near the welt and which can be moved
into different angular positions about its end during the operation of the machine
so as to guide the shoe relatively to the shape of the lower edge of the last.
8. In a machine for paring and channelling the soles of boots and shoes the
use of a shoe gauge, a pair of gripping and feeding jaws, each performing each
of its four movements in unison the one with the other, the jaw operating upon
the welt acting as a resistance for the paring knife to cut against and the jaw
operating upon the sole being provided with a gap affording clearance for the
passage of the paring knife and the operation of the channelling knife.
9. In a machine for channelling the soles of boots and shoes the use of a
channelling knife which is caused to vibrate in the direction of the depth of the
channel and at the same angle as the channel.
10. In a machine for channelling the soles of boots and shoes the combination
of a sole supporting roller with a channelling knife neither of which partake of
any movement in the direction of the feed of the work but which can be moved
together during the operation of the machine for the purpose of regulating the
position of the channel relatively to a shoe gauge which does not lose contact with
the shoe upper during the channelling operation.
11. In a machine for channelling the soles of boots and shoes, a pair of
gripping jaws to feed along the work, a sole supporting roller and channelling
knife carried together upon a yielding support independently of the jaws and
provided with means whereby they can be moved in relation to a shoe gauge for
the purpose of cutting a channel at a varying distance from the edge of the sole
and with regard to such gauge.
12. In a channelling and paring machine a shoe guide, a reciprocating paring
knife moveable in relation to the guide and a reciprocating channel knife move-
able in relation to the guide and a pair of work gripping and feeding jaws
independent of the guide and of the channelling knife or its support.
13. In a channelling machine a sole support and channel knife both spring
supported and moveable together but neither of them moving in the direction
of the feed of the work and an independent feeding jaw the whole situated on
one side of the work and upon the other side of the work another feeding jaw and
independent shoe guide.
14. In a machine for operating upon the soles of boots and shoes a shoe gauge,
a moveable sole support neither partaking of the work feeding movement and a
pair of jaws to feed along the shoe one jaw acting as a block for the trimming
knife to cut against.
15. In a machine for channelling and paring the soles of boots and shoes the
combination of a non feeding shoe guide which does not lose contact with the
upper of the shoe during the paring operation, a moveable non feeding sole
support carrying a channelling knife, a pair of jaws to feed along the shoe and a
paring knife cutting against one of the said jaws.
16. In a machine for channelling and paring the soles of boots and shoes the
combination of a shoe guide, a moveable sole support carrying a channelling

page_text: .
knife, a pair of jaws for gripping and feeding the work one of which acts as a
block for the paring knife to cut against, the channel being cut during the feed-
ing movement of the jaws.
17. In a machine for paring the soles of boots and shoes carrying the paring
knife and the feeding jaws upon a sliding frame so that they are capable of
being moved during the operation of the machine with reference to a shoe gauge
for the purpose of paring wider or narrower edges as desired.
18. In a machine for channelling the soles of boots and shoes carrying the
channelling knife and sole supporting roller on a support independent of the
feed movement, the support being capable of movement, while the machine is in
operation, to and from a shoe gauge for the purpose of channelling nearer to or
further from the gauge.
19. In a machine for channelling the soles of boots and shoes, the vibrating
channel knife, pivoted bell crank and crank shaft as described and for the purpose
specified.
20. In a machine for paring or channelling the soles of boots and shoes the
starting and stopping lever with the toggle connection arranged so that the
machine, being started, continues in motion after the removal of the hand from
the handle.
21. In a machine for paring or channelling the soles of boots and shoes the
combination of the pawls, ratchet slide, tripping plate and return spring with
the feeding jaw for the purpose of opening and releasing the jaw and enabling it
to return to grip varying thicknesses of sole substances.
T
1000