Improvements in Sole Levelling Machines.
Year: 1894

page_text: Date of Application, 5th Jun, 1894
Complete Specification Left, 5th Apr., 1895-Accepted, 11th May, 1895
PROVISIONAL SPECIFICATION.
Improvements in Sole Levelling Machines.
A communication from abroad by ERASTUS E. WINKLEY, Mechanical Engineer,
and BENJAMIN PHILLIPS, Counsellor-at-Law, both of Lynn, Massachusetts,
United States of America.
I, JAMES GRIEVE LORRAIN, of Norfolk House, Norfolk Street, London, W.C.,
in the County of Middlesex, Chartered Patent Agent, do hereby declare the nature
of this invention to be as follows:-
My invention relates to improvements in that class of levelling machinery by
which the operation of levelling is performed by a levelling roll applied under
pressure to the sole of the shoe and consists of a vibrating levelling roll and a shoe
supporting jack and intermediate mechanism operating automatically to change the
relative longitudinal position and lateral inclination of the roll and jack. My
invention further consists of the devices and combination of devices hereinafter set
forth.
The object of my invention is to produce a machine of the above class whereby
the operation of levelling a shoe may be performed without manual interference of
the operator after the shoe is in position to be acted upon by the roll so that two
or more machines placed in convenient juxtaposition or assembled in what is known
in the art as a "gang machine" may be operated by same operator and a great
saving of manual labour thereby effected.
My invention is illustrated by the drawings herewith submitted, in which
Figure 1 is a side view of a machine embodying my invention.
Figure 2 is a plan view showing roll and vibrating mechanism.
Figure 3 is a rear view.
Figure 4 is a detached view of clutch mechanism.
Figures 5 and 6 are sectional views showing mechanism for rocking the roll in
another form of constructing a portion of said machine.
Similar letters and figures of reference refer to similar parts throughout the
several views.
Referring to the drawing, R represents the levelling roll shown as concave, but
the form of which may be varied. To the levelling roll R, I impart vibrating
motion by the following mechanism.
Mounted in frame A, which is a frame suitable to support the working parts of
the machine, is a shaft B, to which power may be applied by any convenient
device. The shaft B carries a gear 1 which meshes with gear 2 carried by the
vertical shaft 3, mounted in suitable bearings in frame A.
The vertical shaft 3 carries a suitable eccentric 4 which is connected by suitable
connecting rod 5 with the swinging lever 79 one end of which is pivoted on
frame A, and the other connected by suitable pivotal slotted connection with the
bed 6. The roll carrier bed 6 is free to slide in suitable ways in frame A, and
upon it is mounted the roll carrier 26, the outer end of which is forked and
provided with bearings in which is mounted the levelling roll R.
To obtain and regulate pressure on the roll R I find the following to be a
convenient device, but I do not wish to limit my invention thereto, as other devices
may be substituted therefor without affecting the essential nature thereof.

page_text: The roll carrier 26 at its inner end is pivoted to the roll carrier bed 6 and
normally rests on the same, its outer end carrying the roll R, extending beyond
the bed 6 and, conveniently curving downward to bring the roll R into convenient
position to operate as hereinafter described.
Upon the carrier bed 6 near its outer end is mounted the rod 27, around which
is wound a spring 28 which bears against the roll carrier 26 and wheel 29, which
has a grooved hub which engages with threads on the upper portion of the rod 27,
by this arrangement the roll carrier 26 is raised against the tension of spring 28,
which may be regulated by raising or lowering the wheel 29 by turning it ou
rod 27.
I find it preferable to construct the roll carrier 26 in two parts capable of a
slight rocking motion with reference to each other, regulated by interposed
springs 30, 30. By so doing I provide the roll with a spring controlled laterally
rocking bearing, which is vertically adjusted by raising or lowering the roll
carrier 26. The roll carrier 26 may however be made integral and springs 30, 30
omitted and good results secured in many grades of work.
The last supporting jack is shown at E, but forms no essential feature of my
invention in the form shown in the drawings (Figure 1). It is provided with last
rests adjustable vertically by hand wheels 31, 31 and horizontally (along the jack)
by hand wheel 32. The toe rests may be conveniently arranged to slide in
bearings under wheel 31 and provided with a cam and lever 99 for raising and
lowering same for convenient removal or adjustment of shoe. I however claim no
invention in such arrangement.
To change the relative longitudinal position of the roll and jack I find it
preferable to oscillate the jack E but I do not wish to limit my invention to such
construction for it is evident that by slight changes in the intermediate mechanism
hereinafter described the roll R may be similarly oscillated and the same result
secured.
I would further say that by the term oscillating I wish to be understood as
including a "to and fro" motion generally whether along a rectilinear or a
curvilinear path.
A preferred form of mechanism for securing the above result is described as
follows:-
The shaft B carries a sleeve on which is cut a worm 8 the sleeve 7 is free to
rotate about the shaft B but is prevented by suitable stops from sliding on the
.same.
By a clutch mechanism hereinafter described the sleeve 7 may be made to rotate
with the shaft B. In the frame A above and transversely to the shaft B is
mounted a shaft C which carries keyed or otherwise rigidly secured thereto a worm
9 which engages with worm 8 on, sleeve 7.
gear
Upon the shaft C also rigidly secured thereto is a wheel D having on its face
the path cam 10 the form and function of which will be hereinafter more fully set
forth.
The shaft C may be an idle shaft in which construction the worm gear 9 and
wheel D are both free to rotate about same and are connected by suitable rigid
connections 89, 89. In other construction parts 89, 89 may be omitted.
In the cam 10 runs the cam roll 12 carried by the sliding bar 13 the rear end of.
which is forked and embraces the shaft C and which at the other end is:
provided with suitable bearings in frame A or suitable bracket thereon.
The sliding bar 13 is connected by suitable pivoted connecting rod 14 with the
The connection between rod 14 and arm 24 is rendered vertically
adjustable by the circular slot 33.
arm 24.
The arm 24 supports the jack supporting carriage 22 in which in bearings 23, 23
is mounted the jack E being free to swing transversely therein.
The arm 24 is mounted upon suitable bearings in the frame A upon which it is
free to swing.

page_text: The relative lateral inclination of the roll and jack is changed either by rocking
the jack E on a longitudinal axis or rocking roll R on a transverse axis. A form.
of mechanism for accomplishing this result by the first of above suggested methods
is the following:
Upon the wheel D is a periphery path cam 11 the particular form and function
of which will be hereinafter more fully described in which runs a cam roll 17
carried on a lug 18 secured to the vertical cross head 19. The cross head 19 is
mounted and free to slide in suitable ways 20, 20 on frame A.
In the cross head 19 is a vertical slot 50 into which extends the handle of the
crank lever 21 connected with and adapted to rock the last supporting jack E.
My second method for securing the above suggested result is described as follows
particular reference being had to Figures 5 and 6.
The construction of the roll carrier bed 6 is similar to that already described
except that its sides and the ways in which it slides in frame A are circular in form
to allow a rocking motion. The form and arrangement of roll carrier 26 may he
similar to that already described or the same may be made integral and
springs 30, 30 omitted as shown in Figure 5.
The ways 20, 20 are so arranged that the cross head 19 is held horizontally
instead of vertically as in construction heretofore described. The cross head 19 is
provided with a longitudinal slot 50 in which is mounted a roll 51 having suitable
bearings at each end of slot 50 and free to rock in the same.
The roll 51 is also provided with a longitudinal slot 52 into which extends a
tongue 53 secured to the roll carrier bed 6.
This arrangement permits the lateral motion of cross head 19 to rock the bed 6
leaving it free to vibrate longitudinally.
The connection between lever 79 and bed 6 is swivelled so that the vibrating
motion is not interfered with by rocking bed 6.
The cross head 19 is provided with a rigid extension 18. which carries a cam
roll 17 working in periphery cam 11.
No other change in mechanism hereinbefore described is necessary except to
rigidly secure jack E to arm 24.
The clutch
follows:--
or stop mechanism herein before mentioned is described
as
As already stated the sleeve 7 carrying worm.8 is free to rotate about the
sbaft B but is prevented from sliding thereon by suitable stops. Upon the shaft B
is another sleeve 37 free to rotate about shaft B and to slide thereon.
The sleeve 37 is connected with sleeve 7 by a suitable clutch 38 which allows
the same to move along shaft B toward and away from sleeve 7 without
disengaging itself therefrom. The sleeve 37 carries the inner wheel of a friction
clutch 39 (which is a form of clutch well known in the arts) the outer wheel of
which is rigidly secured to the shaft B. A spring 40 interposed between sleeves 37
and 7 normally holds the parts of clutch 39 in engagement and sleeve 7 rotates
with shaft B.
In the frame A is mounted a rod 41 free to rotate and slide in suitable
bearings.
On the sleeve 37 is a collar 42 free to turn thereon but prevented from sliding
along same by suitable stops. To a lug on collar 42 is pivoted a connecting rod 43
which is pivotally connected to an upright 44 secured to a sleeve 47 which is
rigidly secured to rod 41. The wheel D carries a dog 45 which as the wheel
revolves strikes the rod 44 or a projection 46 therefrom causing the rod 41 to slide
in its bearing carrying with it the rod 44 and by means of connecting rod 43
driving back sleeve 37 against the tension of spring 40 and disengaging clutch 39
leaving shaft B free to rotate without turning sleeve 7 and hence stopping further
rotation of can.
To the rod 41 is secured a treadle 80 by means of which it may be rotated.
A downward pressure upon treadle 80 rotates rod 41 and turns back rod 44 (by
.

page_text: turning sleeve 47) so that its projection 46 is out of the path of the dog 45 and
the spring 40 closes clutch 39.
Treadle 80 may be conveniently supported by a spring secured to frame A. (not
shown).
Through the roll carrier 26 runs a threaded bolt 48 the lower end of which rests
on bed 6. By turning this bolt in its grooved bearings in carrier 26 the carrier 26
may be raised or lowered upon its bed 6 and the lowest point to which roll R will
fall determined.
By means of the hand wheel 49 the connecting rod 14 may be raised or lowered
in slot 33 and the length of the oscillations of jack E proportionally varied.
From the foregoing description it is evident that the number and length of the
oscillations of jack E are controlled by the cam 10 and the number and extent of
the changes in the relative lateral inclination of the roll and jack are controlled by
cam 11.
The cams 10 and 11 controlling these movements may be so constructed as to
produce any combination thereof as heretofore produced by manual interference of
the operator in the operation of machines of the class heretofore known in the art.
It will be noted that in the construction in which the roll is mounted in rocking
spring controlled bearings such method of mounting assists the cam 11 as it enables
the roll to conform under pressure to minor variations in the contour of the bottom
of the last.
As shown in the drawings the cams 10 and 11 are so formed and timed with
reference to each other that every essential part of the sole is presented to the roll
and the greatest inclination of the roll will occur at the toe and shank the roll
likewise operating longest on such parts.
1 find such operation preferable in practice owing to the curvature of the toe and
shank and owing to the fact that being slightly lower than the rest of the sole they
receive slightly less pressure from the roll. Such pressure on any given part of
the sole depending to a certain extent upon the height to which roll is raised by
such part in passing under the same as the jack is oscillated.
It will be noted that when the lengths of oscillation of jack E are adjusted by
the device herein before described the time of the several oscillations is not altered
and therefore the changes in inclination of the roll will occur at proportional
intervals on the sole and since the parts of a sole in different sizes of shoes vary
proportionally the machine by such adjustment may be adjusted for shoes of
different sizes.
The amount of inclination given by cam 11 to the jack E is regulated by means
of a slot 92 (shown by dotted lines in Figure 1) in the vertical arm of the crank
lever 21 in which the horizontal arm may be raised and lowered and suitable
provision for securing the horizontal arm at a desired position in the slot.
As the horizontal arm of the lever 21 is moved near to its centre of rotation the
amount of inclination given to the jack E by the sliding cross head 19 is increased
and if the horizontal arm is moved away from the centre it is diminished and by
this adjustment the machine may be adapted to soles of varying curvature.
The operation of my machine is as follows:-
The machine being in adjustment to receive the shoe to be levelled and power
being applied thereto the operator puts a shoe upon the jack E, raises the toe into
position by means of the cam and lever 99 and puts his foot upon the treadle 80
(removing it when machine has started) the wheel D then begins to revolve
carrying the shoe, under the vibrating roll R and moving it to and fro while the
levelling roll vibrates over the same under pressure of spring 28 changing its
inclination from time to time on the several portions of the sole until the wheel D
has made a complete revolution when the clutch 39 is thrown out and the operation
ceases the jack having been thrown out by the cam 10 into convenient position for
the removal of the shoe therefrom.
L
I am aware that machines have been heretofore constructed having a vibrating

page_text: levelling roll and shoe supporting jack and means whereby the operator could
manually oscillate the jack and manually rock the roll or jack but I am not aware
that such operations or either of them have ever been performed by a machine
without manual interference of the operator.
Dated this 4th day of June 1894
J. G. LORRAIN,
Chartered Patent Agent.
A communication from abroad by ERASTUS E. WINKLEY, Mechanical Engineer,
and BENJAMIN PHILLIPS, Counsellor-at-Law, both of Lynn, Massachusetts,
United States of America.
I, JAMES GRIEVE LORRAIN, of Norfolk House, Norfolk Street, London, W.C.,
in the County of Middlesex, Chartered 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:-
My invention relates to improvements in that class of levelling machinery by
which the operation of levelling is performed by a levelling roll applied under
pressure to the sole of the shoe and it consists of a vibrating levelling roll and a
shoe supporting jack and intermediate mechanism operating automatically to
change the relative longitudinal position and lateral inclination of the roll and
jack. My invention further consists of the devices and combination of devices
hereinafter set forth.
The object of my invention is to produce a machine of the above class whereby
the operation of levelling a shoe may be performed without manual interference of
the operator after the shoe is in position to be acted upon by the roll so that two or
more machines placed in convenient juxtaposition or assembled in what is known
in the art as a gang machine"
may be operated by the same operator and a great
saving of manual labour be thereby effected.
My invention is illustrated by the drawings left with the Provisional Specification,
in which
Figure 1 is a side view of a machine embodying my invention.
Figure 2 is a plan view showing roll and vibrating mechanism.
Figure 3 is a rear view.
Figure 4 is a detached view of clutch mechanism.
Figures and 6 are sectional views showing mechanism for rocking the roll in
another form of constructing a portion of said machine.
Similar letters and figures of reference refer to similar parts throughout the
several views.
Referring to the drawing, R represents the levelling roll shown as concave, but
the form of which may be varied. To the levelling roll R, I impart vibrating
motion by the following mechanism.
Mounted in frame A, which is a frame suitable to support the working parts of
the machine, is a shaft B, to which power may be applied by any convenient device.
The shaft B carries a gear 1 which meshes with gear 2 carried by the vertical
shaft 3, mounted in suitable bearings in frame A.
The vertical shaft 3 carries a suitable eccentric 4 which is connected by suitable
connecting rod 5 with the swinging lever 79 one end of which is pivoted on frame A,
and the other connected by suitable pivotal slotted connection with the bed 6.

page_text: The roll carrier bed 6 is free to slide in suitable ways in frame A, and upon it is
mounted the roll carrier 26, the outer end of which is forked and provided with
bearings in which is mounted the levelling roll R.
To obtain and regulate pressure on the roll R I find the following to be a
convenient device, but I do not wish to limit my invention thereto, as other devices
may be substituted therefor without affecting the essential nature thereof.
The roll carrier 26 at its inner end is pivoted to the roll carrier bed 6 and
normally rests on the same, its outer end carrying the roll R, extending beyond
the bed 6-and, conveniently curving downward to bring the roll R into convenient
position to operate as hereinafter described.
Upon the carrier bed 6 near its outer end-is-mounted the rod 27, around which is
wound a spring 28 which bears against the roll carrier 26 and wheel 29, which
has a grooved hub which engages with threads on the upper portion of the rod 27.
By this arrangement the roll carrier 26 is raised against the tension of spring 28,
which may be regulated by raising or lowering the wheel 29 by turning it
on rod 27.
I find it preferable to construct the roll carrier 26 in two parts capable of a
slight rocking motion with reference to each other, regulated by interposed
springs 30, 30. By so doing I provide the roll with a spring controlled laterally
rocking bearing, which is vertically adjusted by raising or lowering the roll
carrier 26. The roll carrier 26 may however be made integral and springs 30, 30
omitted and good results secured in many grades of work.
The last supporting jack is shown at E, but forms no essential feature of my
invention in the form shown in the drawings (Figure 1). It is provided with last
rests adjustable vertically by hand wheels 31, 31 and horizontally (along the jack)
by hand wheel 32. The toe rest may be conveniently arranged to slide in bearings
under wheel 31 and provided with a cam and lever 99 for raising and lowering
same for convenient removal or adjustment of shoe. I however claim no invention
in such arrangement.
To change the relative longitudinal position of the roll and jack I find it preferable
to oscillate the jack E but I do not wish to limit my invention to such construction
for it is evident that by slight changes in the intermediate mechanism hereinafter
described the roll R may be similarly oscillated and the same result secured.
would further say that by the term oscillating I wish to be understood as
including a "to and fro" motion generally whether along a rectilinear or a
curvilinear path.
A preferred form of mechanism for securing the above result is described as
follows:-
The shaft B carries a sleeve 7 on which is cut a worm 8: and the sleeve 7 is
free to rotate about the shaft B but is prevented by suitable stops from sliding on
the same.
+
By a clutch mechanism hereinafter described the sleeve 7 may be made to rotate
with the shaft B. In the frame A above and transversely to the shaft B is mounted
a shaft C which carries keyed or otherwise rigidly secured thereto a worm gear 9
which engages with worm 8 on sleeve 7.
Upon the shaft C also rigidly secured thereto is a wheel D having on its face
the path cam 10 the form and function of which will be hereinafter more fully
set forth.
The shaft C may be an idle shaft in which construction the worm gear 9 and
wheel D are both free to rotate about same and are connected by suitable rigid
connections 89, 89. In other construction parts 89, 89 may be omitted.
In the cam 10 runs the cam roll 12 carried by the sliding bar 13 the rear end of
which is forked and embraces the shaft C and which at the other end is provided
with suitable bearings in frame A or suitable bracket thereon.
arm 24.
The sliding bar 13 is connected by suitable pivoted connecting rod 14 with the
The connection between rod 14 and arm 24 is rendered vertically
adjustable by the circular slot 33.

page_text: The arm 24 supports the jack supporting carriage 22 in which in bearings 23, 23.
is mounted the jack E being free to swing transversely therein.
The arm 24 is mounted upon suitable bearings in the frame A upon which it is.
free to swing.
The relative lateral inclination of the roll and jack is changed either by rocking
the jack E on a longitudinal axis or rocking roll R on a transverse axis.
A form
of mechanism for accomplishing this result by the first of above suggested methods
is the following
Upon the wheel D is a periphery path cam 11 the particular form and function
of which will be hereinafter more fully described in which runs a cam roll 17 carried
on a lug 18 secured to the vertical cross head 19. The cross head 19 is mounted
and free to slide in suitable ways 20, 20 on frame A.
In the cross head 19 is a rertical slot 50 into which extends the handle of the
crank lever 21 connected with and adapted to rock the last supporting jack E.
My second method for securing the above suggested result is described as follows
particular reference being had to Figures 5 and 6.
The construction of the roll carrier bed 6 is similar to that already described
except that its sides and the ways in which it slides in frame A are circular in
form to allow a rocking motion. The form and arrangement of roll carrier 26
may be similar to that already described or the same may be made integral and
springs 30, 30 omitted as shown in Figure 5.
The ways 20, 20 are so arrauged that the cross head 19 is held horizontally
instead of vertically as in construction heretofore described. The cross head 19 is.
provided with a longitudinal slot 50 in which is mounted a roll 51 haring suitable
bearings at each end of slot 50 and free to rock in the same.
The roll 51 is also provided with a longitudinal slot 52 into which extends a
tongue 53 secured to the roll carrier bed 6.
This arrangement permits the lateral motion of cross head 19 to rock the bed 6.
leaving it free to vibrate longitudinally.
The connection between lever 79 and bed 6 is swivelled so that the vibrating
motion is not interfered with by rocking hed 6.
The cross head 19 is provided with a rigid extension 18 which carries a cam.
roll 17 working in periphery cam 11.
No other change in mechanism hereinbefore described is necessary except to.
rigidly secure jack E to arm 24.
The clutch or stop mechanism hereinbefore mentioned is described as follows:-
As already stated the sleeve 7 carrying worm 8 is free to rotate about the shaft B.
but is prevented from sliding thereon by suitable stops.
Upon the shaft B is another sleeve 37 free to rotate about shaft B and to slide-
thereon.
The sleeve 37 is connected with sleeve 7 by a suitable clutch 36 which allows the
same to move along shaft B toward and away from sleeve 7 without disengaging
itself therefrom. The sleeve 37 carries the inner wheel of a friction clutch 39-
(which is a form of clutch well known in the arts) the outer wheel of which is.
rigidly secured to the shaft B. A spring 40 interposed between sleeves 37 and 7
normally holds the parts of clutch 39 in engagement and sleeve 7 rotates with
shaft B.
In the frame A is mounted a rod 41 free to rotate and slide in suitable
bearings.
On the sleeve 37 is a collar 42 free to turn thereon but prevented from sliding-
along same by suitable stops. To a lug on collar 42 is pivoted a connecting rod 43
which is pivotally connected to an upright 44 secured to a sleeve 47 which is
rigidly secured to rod 41. The wheel D carries a dog 45 which as the wheel
revolves strikes the rod 44 or a projection 46 therefrom causing the rod 41 to
slide in its bearing carrying with it the rod 44 and by means of connecting rod 43.
driving back sleeve 37 against the tension of spring 40 and disengaging clutch 39.

page_text: rotation of cam.
and lietot stopping F
To the rod 41 is secured a treadle 80 by means of which it may be rotated.
A downward pressure upon treadle 80 rotates rod 41 and turns back rod 44 (by
turning sleeve 47) so that its projection 46 is out of the path of the dog 45 and the
spring 40 closes clutch 39.
Treadle 80 may be conveniently supported by a spring secured to frame A (not
shown).
Through the roll carrier 26 runs a threaded bolt 48 the lower end of which rests
on bed 6. By turning this bolt in its grooved bearings in carrier 26 the carrier 26
may be raised or lowered upon its bed 6 and the lowest point to which roll R will
fall determined.
By means of the hand wheel 49 the connecting rod 14 may be raised or lowered
in slot 33 and the length of the oscillations of jack E proportionally varied.
From the foregoing description it is evident that the number and length of the
oscillations of jack E are controlled by the cam 10 and the number and extent of
the changes in the relative lateral inclination of the roll and jack are controlled
by cam 11.
It
The cams 10 and 11 controlling these movements may be so constructed as to
produce any combination thereof heretofore produced by manual interference of the
operator in the operation of machines of the class heretofore known in the art.
will be noted that in the construction in which the roll is mounted in rocking
spring controlled bearings such method of mounting assists the cam 11 as it enables
the roll to conform under pressure to minor variations in the contour of the bottom
of the last.
As shown in the drawings the cams 10 and 11 are so formed and timed with
reference to each other that every essential part of the sole is presented to the roll
and the greatest inclination of the roll will occur at the toe and shank the roll
likewise operating longest on such parts.
I find such operation preferable in practice owing to the curvature of the toe
and shank and owing to the fact that being slightly lower than the rest of the sole
they receive slightly less pressure from the roll. Such pressure on any given part
of the sole depending to a certain extent upon the height to which the roll is raised
by such part in passing under the same as the jack is oscillated.
It will be noted that when the lengths of oscillation of jack E are adjusted by
the device herein before described the time of the several oscillations is not altered
and therefore the changes in inclination of the roll will occur at proportional
intervals on the sole and since the parts of a sole in different sizes of shives vary
proportionally the machine by such adjustment may be adjusted for shoes of
different sizes.
The amount of inclination given by cam 11 to the jack E is regulated by means
of a slot 92 (shown by dotted lines in Figure 1) in the vertical arm of the crank
lever 21 in which the horizontal arm may be raised or lowered and suitable provision
for securing the horizontal arm at a desired position in the slot.
As the horizontal arm of the lever 21 is moved near to its centre of rotation the
amount of inclination given to the jack E by the sliding cross head 19 is increased
and if the horizontal arm is moved away from the centre it is diminished and by
this adjustment the machine may be adapted to soles of varying curvature.
The operation of my machine is as follows :-
The machine being in adjustment to receive the shoe to be levelled and power
being applied thereto the operator puts a shoe upon the jack E, raises the toe into
position by means of the cam and lever 99 and puts his foot upon the treadle 80
(removing it when the machine has started) the wheel D then begins to revolve
carrying the shoe under the vibrating roll R and moving it to and from while the
levelling roll vibrates over the same under pressure of spring 28 changing its
inclination from time to time on the several portions of the sole until the wheel D

page_text: has made a complete revolution when the clutch 39 is thrown out and the operation
ceases the jack having been thrown out by the cam 10 into convenient position for
the removal of the shoe therefrom.
I am aware that machines have been heretofore constructed having a vibrating
levelling roll and shoe supporting jack and means whereby the operator could
manually oscillate the jack and manually rock the roll or jack but I am not aware
that such operations or either of them have ever been performed by a machine
without manual interference of the operator.
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 :-
1. In a sole levelling machine, the combination of a vibrating levelling roll, a
shoe supporting jack, and connected mechanisms operating automatically to
change the relative longitudinal position and lateral inclination of the roll and jack,
substantially as described.
2. In a sole levelling machine, the combination of a levelling roll, a shoe
supporting jack, means for changing the relative longitudinal position and lateral
inclination of the roll and jack, and mechanism for variably actuating said means,
substantially as described.
3. In a sole levelling machine, the combination of a levelling roll, a movable
shoe supporting jack, mechanism for imparting a varying oscillation to said jack,
and connecting mechanism for changing the relative inclination of the jack and roll,
substantially as described.
4. In a sole levelling machine, the combination of a movable shoe supporting
jack, a vibrating levelling roll mounted above and transversely thereto, connecting
mechanisms timed with reference to each other operating automatically to change
the relative inclination of the jack and roll, and impart a series of varying longi-
tudinal oscillations to the jack under the roll, and means for proportionally
adjusting the length of said oscillations, substantially as described.
5. In a sole levelling machine, the combination with a levelling roll and its
vibrating mechanism of a laterally rocking vertically adjustable bearing for said
roll, and suitably placed springs for controlling the lateral and vertical movement
thereof, substantially as described.
6. In a sole levelling machine, the combination of a vibrating levelling roll
capable of being rocked laterally, a shoe supporting jack capable of being oscillated
longitudinally and connected mechanism for automatically rocking the roll and
oscillating the jack, substantially as described.
7. In a sole levelling machine, the combination of a vibrating levelling roll
and means for laterally rocking the same, a shoe supporting jack and connected
mechanism operating automatically to impart a series of longitudinal oscillations
thereto and means for adjusting the length of said oscillations, substantially as
described.
Dated this 5th day of April 1895.
J. G. LORRAIN, M. Inst. E.E., M. Inst. M.E.,
Chartered Patent Agent.