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Патент USA US3088154

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May 7, 1963
MACHINE FOR OPERATING ON SHOES
Filed June 8. 1960
3,088,146
J. L. FORMA
'
3 Sheets-Sheet 1
May 7, 1963
J. L. FORMA
3,088,146
MACHINE FOR OPERATING ON SHOES
Filed June 8. 1960
3 Sheets-Sheet 2
-INW
May 7, 1963
3,088,146
J. 1.. FORMA
MACHINE FOR OPERATING on SHOES
Filed June 8. 1960
.
3 Sheets-Sheet 3
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United States iPatent 0 “ice
insane?
Patented May 7, 1963
2
1
FIG. 8 is a front elevation of the supporting table
showing the gauge mounting.
3,088,146
i‘s/IACHINE FQR OPERATING ON SHOES
Referring to the drawings, there is shown a rigid bed
plate 10 supported horizontally at the upper end of a hol
low base 12, the (latter having fastened to it a footing
of Massachusetts
plate 14. Parts of the motivating means are supported
Filed June 8, 1960, Ser. No. 34,654
within the base 12, as will appear hereinafter. The
it} (Claims. (Ci. 12—87)
means for holding the work and operating on it, which
comprise essentially heel clamping means 16, a cutter 18
This invention relates to machines for operating on
heels and especially to automatically trimming llat heels, 10 and the mechanism for effecting engagement of the work
and cutter to trim the ‘work, are mounted on the bed
either unattached or attached to a preformed outsole,
above the base and are adapted to be enclosed while not
but before attachment to the shoe.
in use with 1a suitable cover 20 mounted on hinges so that
The principal objects of this invention are to provide
it maybe lifted upwardly and supported in an out-of-the
a machine for automatically trimming the peripheral edge
of flat heels, as distinguished from high heels, either be 15 way position while using the machine.
The heel clamping means consists of a supporting table
fore the heel is attached to the outsole or after it is at
22 and a ‘clamping foot 24. The table 22, which is in
tached thereto, but in any ‘case before it is attached to the
the form of a heel-shaped block, is removably fastened
shoe; to provide a machine in which one or a plurality
to the upper end of a shaft 26, the latter being journaled
of heels of the same size, with ‘or without the attached
insoles, may be trimmed at the same time; to provide a 20 in the bed 10 for rotation about a vertical axis, with its
upper end projecting above the bed and its lower end
machine which may easily be modi?ed by substitution
projecting below the bed. Endwise movement of the
of certain component parts, with no appreciable delay,
shaft is taken up by a suitable bearing 28 situated be
to trim heels of di?erent size and/ or shape; to provide
tween the upper side of the bed ‘and the underside of the
a machine in which trimming is accomplished without
producing chatter marks on the surface being trimmed; 25 table 22, and at the underside of the bed by a thrust
bearing 39. A pinion 32 is fastened to the portion of the
to provide a machine in which alignment of the heel
shaft projecting below the bed and rotation of the pinion
with the heel trimming cam is facilitated; and to provide
and hence of the shaft is effected by a rack 34 which is
a machine which is easy to operate, is of high productive
fastened to the protruding end of a piston rod 36 extend
capacity, durable, and involves no hazards.
As herein illustrated, the machine has a rotatable sup 30 ing from the cylinder of a ?uid motor. The motor is
suitably fastened to ‘a ‘bracket 40, which in turn is fas
port for receiving a workpiece, a cam ?xed to the support
James Louis Forma, Andover, Mass, assignor to Superior
Shoe Company, Inc, Lawrence, Mass, a corporation
' tened to the underside of the bed.
' and rotatable therewith, which corresponds in shape to
The clamping foot 24 is in the form of a ?at plate
the peripheral edge of the work to be operated upon, a
removably mounted on the lower end of a sleeve 42.
carriage movable toward the work support, a cutter and
follower on the carriage, means yieldably holding the 35 The plate corresponds in shape to the heel to be operated
on but is slightly smaller, so as to provide clamping pres
cutter and follower displaced relative to the carriage to
sure close to the peripheral edge without interfering with
ward the support, means for moving the carriage toward
the cutter. The sleeve 42 is rotatably mounted on the
the support to bring the follower into engagement with
lower end of ‘a piston rod 44 extending downwardly from
the cam, and means for effecting rotation of the support,
40 the cylinder of a ?uid motor 46, which is supported ver
the follower operating, by engagement with the cam, to
tically above the base, with the axis of the rod aligned
cause the cutter to move relatively to the work, ‘as the
with the axis of the shaft 26. Spaced channel members
latter is turned, to trim the work according to the dic
48-43 (FIGS. 1 and 2), fastened to the bed, perpendicu~
tates of the cam.
lar thereto support a horizontally disposed beam 5-0 to
The invention will now be described in greater detail
45 which the cylinder of the motor 46 is fastened on end.
with reference to the accompanying drawings wherein:
Corner braces 52 (FIG. 1) make the superstructure rigid
FIG. 1 is a front elevation of the machine with the
so that clamping action is positive. A thrust hearing or
leasing broken ‘away in part to show the component parts;
sleeve 54 (FIG. 2) is mounted on the rod 44 with its
FIG. 2 is an enlarged vertical section taken on the line
‘lower end engaged with an antifriction bearing 56 rest~
2-—2 of FIG. 1, at the upper part of the machine, show
ing the operating components partly in elevation and 50 ing on the upper end of the sleeve 42 and its upper end
engaged by lock nuts 58 for holding it against the anti
friction ‘bearing. To provide lateral support, a bracket
partly in section;
FIG. 3 diagrammatically illustrates the component
parts of the machine and the motor means for effecting] > ' plate 51 is fastened to the beam 50 so as to extend down
their operation;
FIG. 4 is an isometric view of a heel blank comprised
of several layers, such as may be trimmed on the appa
wardly therefrom parallel to the axis of the sleeve and a
‘55' block 53, having a vertical passage through it for slidably
accommodating the sleeve 54 is fastened to the bracket.
The clamping foot 24, ‘as thus supported, is free to rotate
about the vertical axis of the rod 44 and is movable to
and from the table 22.
ratus disclosed herein;
FIG. 5 is an isometric view of a pre-cut sole with a
heel blank attached thereto;
FIG. 6 is a plan view of several soles with heel blanks
60
The table and foot constitute vertically spaced clamp
ing members movable into engagement to support the work
attached thereto, stacked ‘for trimming;
for rotation about an axis perpendicular to the plane of
FIG. 7 is a fragmentary side elevation of the manually
the work. The work to be operated upon is placed on the
operable linkage for raising and lowering the upper
table 22 and clamped down by lowering the foot 24 into
clamping foot; and
65 engagement with it, whereupon, the clamps are rotated as
3,088,146
>
4
3
a unit with respect to the cutter which is brought into
engagement with the work, as will appear hereinafter.
To effect trimming, according to the shape desired, a cam
60 is fastened to the lower part of the supporting table,
the peripheral surface of which corresponds to the shape
that the cutter will follow the contour of the work and
thus trim it according to the dictates of the cam. Right
and left sole blanks with heel blanks attached may be
stacked one on top of another as shown in FIG. 6.
The motivating means for various parts is shown dia
which is to be imparted to the work. The cam 60 may be
grammatically in FIG. 3 and comprises essentially an
an integral part of the table or a separate part and, in
oil reservoir 120, a pump P and a motor M2 for driving
any event, the two are removably ?xed to the shaft 26
the pump so as to deliver oil from the reservoir at a suite
so as to be readily removable for replacement with a
able pressure to the cylinders of the several motors 38,
table and cam of different size and/or shape. A gauge 10 46 and 76 and to the cylinder of the motor 86. Pressure
roll 61 is mounted on the table 22 for positioning the work
?uid is delivered to the cylinder of the motor 38 through
and,ywhen the latter is a heel (FIG. 4), for engagement
a valve V1, the position of which is controlled by a sole
'with the breast line of the heel. The breast line of the
noid S1; pressure ?uid is delivered to the cylinder of the
supporting table contains a vertically disposed dovetailed
motor 46 through a valve V2, the position of which is
groove ‘63 (FIG. 8) for removably receiving a slide 65 15 controlled by a solenoid S2; pressure ?uid is delivered to
and the latter supports a gauge plate 62 (FIG. 5) which
the cylinder of the motor '76 through a valve V3, the
supports a pair of spaced pins 64 for positioning the work
position of which is controlled by a solenoid S3; and
on the table when the latter is a sole with the heel at
pressure ?uid is delivered to the cylinder of the motor 86
tached thereto.
through a valve V4, the position of which is controlled by
The cutter 18 (FIG. 2) is arranged to be moved into 20 a solenoid S4. The solenoids S1, S2, S3 and S4 are
engagement with the Work when the latter is clamped
connected to a timer 122, the latter ‘controlling the
between the supporting table and the clamping ‘foot and
sequence of operation of the several solenoids, so that
to be guided so as to follow the contour of the work by
?uid pressure is ?rst supplied to the motor 46 to apply
a follower 66, which is adapted to engage the cam 60.
pressure to the presser foot to hold the work against the
Movement of the cutter vand follower to and from the ’25 table, pressure ?uid is then delivered to the motors 76 and
workpiece is effected by a carriage 68 slidably mounted
86 to advance the ‘carriage to bring the follower into
on a ?at plate 70 fastened to the bed. The plate 70 has '
engagement with the cam and to the motor 38 to initiate
rotation of the support when the contact is made and to
spaced parallel, re-entrant ways 72-72, between which
the carriage Zis mounted, the latter having ribs 73—73
‘withdraw the carriage when the trimming is completed.
(BIG. 2) at its edges slidably engaged with the ways to
guide the carriage linearly ‘to and from the Work. The
There is an adjustable relief valve 124 in the line con
necting the valve V4 with the motor 86 and ‘this permits
carriage is connected at its rear end to a rod 74 extending
a from the cylinder of a ?uid motor 76, the latter being
the slide carrying the follower and cutter to move rear
fastened to a bracket plate 78, which in turn is fastened
to the bed 10. A slide plate 80 is mounted on the car-‘~-35
riage 68 between re-entrant Ways 82—82 for movement
forwardly and rearwardly with respect to the Work on the
carriage. The rear end of the slide, plate 80 is connected
. to ‘a rod 84 which projects forwardly from the cylinder
‘of a motor 86 mounted on a bracket 88, which in turn is
. fastened to the rear end of the carriage. Normally, the
ment with vthe heel manually before clamping pressure is
applied to permit ‘adjustment of the work without danger.
of injury. To this end the block 53 has at its opposite
slide plate 80 is held forwardly displaced with reference
to the carriage by the motor 86. A bearing block 90
, is bolted to'the top side of the slide 80 and has at its
forward end a vertically disposed bearing sleeve 92 in
which there‘is journaled a‘shaft 94, the latter being held
against endwise displacement by suitable: thrust bearings
wardly as the follower is displaced, by rotation of the sup
port, by allowing ?uid to vent from the rear end of the
motor 86 when the rearward pressure exceeds a predeter
mined amount. The resistance to displacement is con
trolled by an adjustment 126 (needle valve), at the rear
end of the motor, which permits ?ow of ?uid from the
motor 86 to the reservoir.
It is desirable to bring the clamping foot into engage
sides vertically disposed slots 130-430 (FIG. 7). The
45 sleeve ‘54 has on it diametrically disposed pins 138-138
96 and 98 at its upper and lowenends, which have con
tact, respectively, with 'theup'per and lower ends of the
V which extend through the slots.
A yoke member 128,
having a pair of spaced parallel arms 132—132, is ?xed
to a horizontal shaft 134, the latter ‘being supported by
the'spaced arms 136-136 of a U-shaped bearing bracket
7137 fastened to the bracket plate 51 on the beam 50.
suitablerkind is ‘shown herein as having a plurality of 50 The arms 132-132 ‘of the yoke member 128 which is
sloping teeth circumferentially thereof, and is fastened
?xed to the shaft 134 are bifurcated to receive the out~
7 to the lower end of the shaft 94. It is obvious that any
wardly projecting ends of pins 138-138. An am 142
suitable ‘kind of cutting tool may be substituted for the
is fastened to 'the shaft 134 and at its distal end there is
‘one shown in accordance'with the character of the work.
a rod 144 which extends downwardly therefrom to the
55
The upper end of the shaft ‘94 has ‘fastened'to it a pulley
foot of the machine where there is a treadle 146 for
102 and 'a belt 104 'is entrained "about this pulley and a
re?ecting rotation of the shaft 134. Rotationvof the shaft
pulley 105 fastened ‘to the ‘downwardly projecting shaft
134 will rock the "arms 132-132 about the axis of the
106 of *an electric motor M, mounted between brackets
shaft 134 as a center and hence raise or lower the sleeve
’ 108-108 fastened‘to the vtop of the bearing block.
42 relative to the table 22.
7 bearing sleeve.
The cutter 100, which may be of any .
The follower 66 is mounted ‘on a vertically disposed 60
“pin 1110, ‘vertically below and axially ‘aligned vwith the
shaft 94 on a'bracket 112, which is fastened to the for
" wardfiend'or an adjustable plate 114. The plate '114 is
slidably mounted ‘in a groove, at the underside ‘of the
‘block 90 and adjustment is eifected by'a'screw 116 con
nected to the rear end of the plate and threaded through a
?ange 118311116 rear side of the bearing block.
' As thus arranged, it is apparent'that one or more work
For safety purposes the machine is designed so that it
cannot be started until the operator has removed his
hands from the vicinity of the clamps and cutter. To
this end, the timer 122, which controls operation of the
machine is wired so that it cannot be started without de
pression of both of the starting buttons a and b and these
are located at opposite sides of the base so that it is im
V-possible to close both switcheswith one hand.
'While the invention is described herein as designed for
pieces such as one or more heel ‘blanks (FIG. 4), com
trimming,
it is to be understood that the machine can per
' prised of‘one or more layers or'one or more precut sole 70
‘blanks with heel blanks attached thereto (FIG. 5), ‘may
'be clamped between the table and foot, whereupon, the
form ‘other operations on the edges of heels such as
‘bu?‘ing, blacking, knurling, and the like and, while for
V the sake of simplicity in the description of the organiza- '
carriage may be advanced to' bring the follower vinto en
tion of parts, the operating tool is referred to as a “cuty
gagement with the cam. As the'heel or heels are rotated
‘the slide 'on the carriage will move relative thereto ‘so 75 ter,” thelatter may be replaced by tools for performing
3,088,146
5
any of the operations suggested or their equivalent with
out departing from the spirit of the invention.
It should be understood that the present disclosure is
for the purpose of illustration only and that this inven
tion includes all modi?cations and equivalents which fall
within the scope of the appended claims.
I claim:
1. In a heel trimming machine, a rotatable support
having a ?at supporting surface, a cam ?xed to the sup
6
ment of the clamps to bring them into engagement with
the work, and other means for applying clamping pres
sure to the clamps after they have been brought into en
gagement with the work.
5. In a machine for operating on the peripheral edge
of a workpiece, a tool, a table, means mounting the table
for rotation, a clamping foot spaced from the table,
means supporting the clamping foot for rotation and for
movement toward the table, means for effecting move
port and rotatable therewith, said cam corresponding in 10 ment of the clamping foot toward the table to clamp a
workpiece between it and the table, means for applying
shape to the periphery of the heel to be trimmed, a gauge
clamping pressure to the clamping foot against the work,
on the support for aligning the heel with the cam, a clamp
and means for effecting rotation of the table and hence
situated opposite the ?at surface of the support movable
into engagement with a heel resting on the supporting
rotation of the clamping foot in unison therewith rela
surface to clamp the heel thereto, said clamp being free 15 tive to the tool.
6. In a machine for operating on the peripheral edge
to rotate with the support, a carriage movable to and
from the support, a cutter, and follower, a slide yieldably
mounting the cutter and follower on the carriage in a
of a workpiece, a tool, a table, a shaft supporting the
table for rotation, a clamping foot, a second shaft sup
porting the clamping foot for rotation and movement to
forwardly displaced position, means for effecting move
ment of the carriage to bring the forwardly displaced 20 ward the table, linkage operably connected to the second
shaft to move it in a direction to move the clamping foot
cutter and follower into engagement with the periphery
of the heel and cam respectively, means for effecting ro
tation of the support to turn the heel and cam relative to
against the work on the table, a ?uid motor operably
connected to the second shaft operable to apply pressure
the heel and cam respectively, means on the slide for
effecting rotation of the cutter, means on the bed for
to the tool.
to the clamping foot to clamp the clamping foot against
the cutter and follower, the follower operating to dis
place the cutter variably on the carriage, according to the 25 work on the table, and a ?uid motor operable to effect
rotation of the ?rst shaft, and hence rotation of the table
dictates of the cam, and means for effecting rotation of
and the clamping foot in unison relative to the tool.
the cutter while in contact with the heel.
7. In a machine for operating on the peripheral edge
2. In a heel trimming machine, a rigid bed, a shaft
of a workpiece, a tool, a table, a shaft supporting the
journaled on the bed with its axis of rotation perpendicu
lar thereto, a table fast to the shaft for rotation therewith, 30 table for rotation, a second shaft, a bearing supporting
said second shaft in alignment with the ?rst shaft for re
said table having an upper ?at surface for receiving a
tation, and for movement toward the table, a clamping
heel, a cam on the table corresponding in shape to the
foot ?xed to the end of the second shaft next to the table,
heel to be trimmed, a gauge on the table for aligning
a ?uid motor operably connected to said second shaft, a
the heel with the cam, a clamp mounted above the table
for movement into clamping engagement, a heel disposed 35 sleeve on said second shaft within which it is free to re
tate, means for effecting movement of the sleeve to move
on the table, the clamp being free to turn with the table,
said second shaft toward the table to bring the clamping
a carriage on the bed movable horizontally toward the
foot into engagement with the work on the table, means
table, a slide on the carriage, means yieldably holding
for supplying ?uid pressure to the ?uid motor to apply
the slide forwardly displaced with respect to the carriage,
a cutter and follower mounted on the slide and movable 40 clamping pressure to the clamping foot, and means for
effecting rotation of the ?rst shaft to turn the table and
therewith and with the carriage by movement of the latter
the clamping foot clamped against it in unison relative
to bring the cutter and follower into engagement with
8. In a machine for operating on the peripheral edge
effecting movement of the carriage to bring the follower 45 of a workpiece, a tool, a table, a ?rst shaft supporting
into engagement with the heel cam, and means for effect
ing rotation of the table, said follower being movable ac
the table for rotation, a ?uid cylinder containing a second
shaft mounted above the table with the second shaft in
alignment with the ?rst shaft, a clamping foot rotatably
mounted at the lower end of the second shaft, a sleeve on
the carriage as the cutter travels peripherally of the heel.
3. In a heel trimming machine, a rigid bed, a shaft 50 said shaft, a bearing block within which the sleeve is free
to slide axially, said bearing block containing diametric
journaled on the bed with its axis perpendicular thereto,
ally disposed slots, pins on the sleeve projecting through
a table fast to the shaft above the bed, a pinion fast to
the slots, an arm having bifurcated portions engaged with
the shaft below the bed, a ?uid motor mounted on the
the pins, a treadle operable to rock the arm in a direc
bed above the table containing a downwardly protruding
ram aligned with the axis of the shaft, the lower end of 55 tion to lower the sleeve and hence to move the clamping
foot into engagement with the work on the table, means
which is adapted to clamp a workpiece on the table, a
for supplying ?uid pressure to the fluid motor to apply
cam on the table corresponding to the shape of the work
clamping pressure to the clamping foot, and means for
piece to be trimmed, a carriage slidable on the bed to
effecting rotation of the ?rst shaft to rotate the table rela
and from the table, a ?uid motor fast to the bed operable
cording to the dictates of the cam to shift the slide on
to advance and retract the carriage, a slide mounted on 60 tive to the work.
the carriage, a cylinder on the carriage yieldably holding
the slide forwardly displaced relative to the carriage, a
follower and cutter mounted on the slide movable with
the carriage into engagement with the cam and the work
9. In a machine for operating on the peripheral edge of
a workpiece, a tool and spaced clamps, means mounting
the clamps for relative movement to bring them into en
gagement with the workpiece and to permit rotation rela
piece, a motor on the slide operable to rotate the cutter, 65 tive to the tool, said clamps being shaped to engage the
work close to the peripheral edge to be operated upon but
a rack engaged with the pinion and a ?uid motor oper
leaving a margin projecting from between them for en
able to effect movement of the rack to thereby rotate the
table, said follower being operable by contact with the
cam to cause the cutter to follow the contour of the
gagement of the tool therewith without engagement of
the latter with the clamps, said clamps being removable
work.
70 from said mounting means to permit replacement ac
cording to the size and shape of the work.
4. In a machine for operating on the peripheral edge
10. -In a machine for operating on the peripheral edge
of a workpiece, a tool, spaced clamps movable relative
of a workpiece, work-engaging clamps including means
to each other to clamp a workpiece between them, and
for moving the clamps into engagement with the work,
rotatable in unison about an axis perpendicular thereto
relative to the tool, means for effecting relative move 75 and a ?uid motor for applying clamping pressure to the
3,088,146
7
is
clamps, a carriage movable toward the work-engaging
move the carriage to engage the tool with the Work and
simultaneously to initiate rotation of the work.
clamps, a tool yieldably mounted on the carriage, a ?uid
motor for effecting movement of the carriage to bring the
tool ‘into engagement with the work, aV-?uid motor for
effecting rotation of the clamps to turn the work relative -
to the
means
as the
plying
tool While the latter is engaged with the Work,
for e?ecting movement of the tool on the carriage
work is rotated relative thereto, means for sup
?uid pressure to the ?uid motors, and a timer for
controlling the flow of ?uid pressure to the respective
?uid motors, to apply clamping pressure to the clamps,
1°
‘References Cited in'the ?le of this patent
UNITED STATES PATENTS
1,357,203
Overlin _____________ __ Oct. 26, 1920
1,384,348
2,606,582
Riedy ________________ __ July 12, 1921
Horansky __________ __ Aug. '12, 1952.
2,720,668
2,892,199
Liberty ____________ _._ Oct. 18, 1955
Murphy ____________ __ June so, 1959
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