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Патент USA US2132979

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Oct. 11, 1938.
E. ‘q. WOLF
Filed July 16, 1937
2 Sheets-Sheet 2
<3 11,111,”: Y
In ven 740/”
gym? G. W/
Patented Oct. 11,1938’ '
* 2,132,979
5 f 2,132,979
. noucn ROUNDERJ
Eugene VG. Wolf, St. Louis,vMo., assignor to Lan
dis Machine Company, St.‘ Louis, Mo., a cor
poration of Missouri
Application July 16, 1937, Serial (No. 153,936
_14 Claims.
- The invention relates to shoe working machin- .
ery and more particularly to machines having a ’
clutch'connection between a driving member and
a driven mechanism, which clutch connection is
5 _ actuated by a treadle andywhich mechanism in
Figure‘ 1 is a side elevation of. a. machine head
embodying the invention and showing the parts‘
in position to- permit the insertion and removal
of the shoe which is indicated in dot and dash
cludes opposing elements forming a clampfor
the Work to hold it while it is being ‘operated
Figure 2 is a corresponding elevation sectioned
in part for better illustration of the mechanism
upon. One of the clamp elements may be’pr'o- _
vided with a lever or handle whereby the oper
and showing the parts with the‘ knives in oper
ating position. i
the work from the machine for inspection ‘or
Figure 3 is a front elevation‘of the machine 107
head shown in Figures 1 and 2.
Figure 4 is a top view of a detailof the con
after the operation/is ?nished.
10 ator may open the clamp to facilitate insertion
of the work into the machine or for removal of
This clamping
element may mount a knife for cutting a stitch
15 r receiving channel inthe sole contemporaneously
withthe rough rounding of the sole edge.
An illustrative example’ of such machines is
that used for rough rounding the shoe sole after
the upper has been lasted'thereto,‘ the machine
20 clamp being arranged to hold the work against
the thrust of the cutting edge 'of the knife and
to feed the work for successive knife ‘operations.
Such a rough rounding machine may also-inf
elude a knife for cutting a stitch-receiving chan
25 nel ‘in the sole’ simultaneously with the rough,
rounding of the sole edge.
The present invention is_ applicable, but is not
limited, to a rough rounding machine as de
(01. 12-18)
When operations are started, it‘is necessary to
see that the movable clamping ,elementfand the
channeling knife thereon, if a channeling knife
isrpresent, is spaced from'the other clamping
element so that the shoe sole may be inserted in
Flgure 5 is a vertical transverse section taken
on the line 5--5 of Figure 4.
Figure 6 is a view showing the machine head
and its supporting frame with the foot treadle
connection forming a part of the control device.
Machine, head I is mounted upon an upright
stand 2 and journals a‘ mechanism shaft '3‘ car
rying a‘ hand wheel 4‘, ?xed'thereto, and a'pul
ley 5 loose on the shaft and driven'by belt 6
from a suitabledrive-shaft (‘not shown).
A familiar type of clutch is illustrated and-in-.
eludes rollers 1,.mounted on clutch yoke8, re 25
lease spring 8b, and a horizontal arm Ba con:
nected to a foot treadle I I which, whendepressed,
thrusts the rollers against pulley 5 to move the
same into engagement with disc 9, forming part
‘of the hand wheel, to rotate the operating shaft.
The machine head carries a stationary anvil l3
against which the shoe sole S may rest. An arm
It is pivoted to the‘ head at l5 and mounts a
slide'lli'provided with springs "5a which yield
ingly thrust the slide to the right. The chan
neling knife I‘! carried on the forward end of
is customary to provide a, hand wheel on the; slide [5 is thrust into the shoe sole by springs
. driven ~shaft whichrmay be rotated manually-to l 6a, the forward movement’ of the knife and slide
move the rounding kniferandrclamp to position being limited by contact of roller l 8 with the'face
‘ of the sole (Figure 2). ‘
40 to permit the insertion of the sole. The move
The roughv rounding knife I9 is mounted on
ment of the clamp lever or of the hand wheel
place. Then the clamp is closed’ and the oper
ation begun. vOnthe clutch type of machine, it
requires the use of one of the‘bperator’s hands
and, to a certain‘ extent, distracts his attention
from the manipulation of the shoe.
The main object of’the present‘ invention is
to leave both-of the operator’s hands free to
manipulate the shoe and- at the same time pro
vide for. manual control of the parts so that the‘
sole may be inserted into the machine and re
50 ‘moved therefrom without interference from the’
mechanisms which operate thereon.‘
This main object and other detailed objects
as will be explained later are :attained- by the
structure illustrated in theac companying draw
55 - ings, in which
the lower end of a lever 20 pivoted to the head
at 2|. An eccentric E on shaft 3' oscillates lever
20 bymeans of a link 40 having a collar 4| sur
rounding feccentric‘yE. " r
When'the machine is operatingfeed ?nger 25
starts at right (Figure 3), movesinwardly (Fig
ure 2)‘, and then to theleft (Figure 3) to-feed
, the work.’ Channeling knife I'I mountedon slide
l6 moves to the left (Figure 3) in unison with 50'
feed ?nger 25. Feed ?nger 25 then backs away
from the vwork (Figure 2) and returns one-half
the distance to the right (Figure 3) to position
itselffor oncoming rounding knife I9. While
rounding knife I5 is in the work, channeling knife 55 '7
l1 moves to the right to cut a stitch-receiving
channel. Knife l9 then recedes from the work
and feed ‘?nger 25 moves the balance of the dis
tance to the right (Figure 3) to its original start—
‘ing position.
All of the above described construction and
operation corresponds to that shown in Meyer
and French Patent 600,883 and is well known to
those, skilled in the art and in itself ‘does not‘ con
functioning of the‘ rough rounding and chan
neling structure.
Rough rounding machines of this type do not
always include the channeling knife, and it will
be understood that this element and the groove
cutting function thereof may be omitted from
the machine without, eliminating the construc
tion and function of the associated parts where
bythe work is‘ clamped in position to be held
stitute the present invention.
against the thrust and release of the rough round
Channeling knife withdrawing mechrmismrr1v ing knife. Under these circumstances,’ when the
The upper end of rod 10 is connected to the outer operation is terminated and the pedal released,
end of arm 26 of a bell crank pivoted at 27 to the clamp will be opened and the rounding, knife
the head and having a lower arm 28 pivotally held withdrawn from the work. The single man
15 mounting a block 29 slidably engaging the‘upper ' ually operated device comprising treadle H and
arm 30 of a bell crank pivoted at 3| to the head, rod; l0 utilizes the convenient foot control, but
and ‘having a lower arm 32 opposing a roller‘33 , the same general effect would be readily obtained
mounted on a bearing projecting from the ‘side by use of a part designed to be engaged by the
of slide I6.
I operator’s'knee, elbow, or even by one of the
When. treadle II is depressed to pull rod’ l0
downwardly (Figure 2), bell crank 26—28 is
operator’s hands.
rotated in a clockwise direction and bell"'crank
modi?cations in details of the machine'may be
made without departing from' the spirit‘ of the
invention and exclusive use of such modi?cations
20-32 is rotated inananti-clockwise direction‘
to free roller 33, leaving springs I6a free to thrust
slide l6 forwardly, as shown in Figure 2. When
pressure on treadle H is removed, coil spring'34,
engaging tailpiece 35 on bell crank 25428, move-s'
the latter in an anti-clockwise direction " and
moves bell crank, 3U—32 in a clockwise ‘direction
These variations in general structure and other
as come within the scope of the claims is con
I claim:
1. In a machine for rough rounding shoe solesf
a rounding knife, an 'anvil for supporting’ the
to engage roller 33 and move slide I8‘ to the'l'eft, shoe sole, a member opposing said anvil, a clamp 30 if
withdrawing knife l‘lfand roller 18 from the" ing spring for thrusting said member towards
work, (Figure '1), thus ‘automatically 'fr'eeing'the said anvil to clamp the sole between them. mech
work from the channeling knife whenever'the anism for reciprocating said knife to cut through
treadle is released, thedriving mechanism be
the sole, a driver for said mechanism, a clutch
35. ing de-clutched by the upward movement of-bell
for engaging said mechanism and said driver, a 35..
‘ crank arm 26 through connecting link 35 and its
clutch spring for releasing said clutch, and a
rotation of clutch arm 8a and the clutch yoke‘: 8;" manually controlled device connected to said
This position of the mechanism is ~assumed clutch ‘and to said member, and operable when in
" automatically, leaving both hands" of ‘the operator one position to hold said clamping member away
40 izfree'z-to manipulate the .work', including its" re ' from said anvil against" the action of saidclamp- ,
.moval from the ,machine'and its ‘replacement by?
another piece of‘work.
' ‘ ‘ Q
Roundz‘ng knife positioning mechanism-When
ing spring and in another position to engage .
said clutch against‘ the action of said‘ clutch
‘ 'treadle'l I and rod H} are) depressed (Figure 2),
2. In a machine for rough rounding shoe soles,
;tailpiece35 engages and lifts‘a brake'jshoe'3'l', a rounding knife, a rotating shaft by which said
pivoted at 38 to head I, and holds this-brake shoe‘ knife is moved to and from the work tocutthe
in the "elevated position shown in Figure_":2' so
long as the machine is, operating. A coiled spring
same, van- element mounted on said‘shaftecc'en
trically of its axis, atbrake shoe opposing said
39, anchored. to'head l and brake shoe 3?, tends element, a spring tending to thrust said shoe 'to
50 to thrust‘the brake ‘shoe in the‘ direction "of arj-~ wards said element, a driving mechanism, a clutch 4'
row 'A. Uponrelease of ‘treadle 'I I’ and; rod U]; ' between the same and said shaft, a spring tend
tailpiece 35 moves downwardly to theposition ing to release said clutch, and a single manually
shown in Figure 1, permitting‘brakeshoe 3'1' to~ controlled device for moving said- brake shoe‘
move in a; clockwise direction from“ the position away from said element and for'engaging- said
shown in Figure 2 to a position slightly more ad-‘
vanced than indicated in Figure 1.‘ As" the high ;
point of eccentric E comes opposite to brake shoe
3. In a machine for rough rounding shoe‘soles,
a rounding knife, a rotating shaft by which saidv
31', the collar 41 of link 40 will contact'the 'fric-’ ‘ knife is moved to and from the work to "cut'the'
tion lining 42 on brake shoe 31, which will ‘bring; ‘same, a driving pulley, ‘a clutch between said
60 the link, eccentric and shaft to rest‘ in the posi» shaft’ and said'pulley, an element mounted on
tion shown in Figure l with rough rounding knife saidshaft eccentrically of its axis; a'brake shoe 60
l9 spaced from the work. -
From the above description it will be seen
that release of the treadle H,- results inv the-auto
matic de-clutching of the driving mechanism and
opposing said element,rmeans thrusting said shoe
towards said element; a member counteracting
said means to hold said shoe outof engagement
with said element when said clutch is’function
'ing, and a‘single manually controlled device con 65
nected, to said clutch and said member to free ‘said
shaft from said pulley and topermit said shoe
1 to, move into contact with said element, said ele
the hand wheel ‘4 or being otherwise required to
ment being engaged 'by said‘ shoe' when said 70
divert his hands or his attention from the work rounding knife is withdrawn from the work.
in the movement of the’ channeling knife away’
from the work'and the stopping of the machine
with the rough rounding knife also spaced from:
the work; all vwithout theoperator manipulating
as has been necessary with previous ‘machines
of this type.
This desired result is effected without any sub
75 stantial changes in the construction and normal
' 4. In a machine for channeling shoe'solesfa
work supporting member, a channeling knife, a
knife mounting structure slidable to and from
said memberand also movable alongside of said
member for cutting a channel in a shoe sole rest-.
ing thereon,- means for thrustingsaid structure
and knife towards said ‘member, and a single
manually controlled device for rendering said
means ineffective
10. In a machine for operating on shoe'soles, a
channeling knife, a rough rounding knife, mecha
nism for moving said knives into positions to
out the work, means for driving said mecha
withdrawing said 1 nism, and a single manually controlled device for
structure and knife from said member. '
5.'In a machine for channeling shoe soles, a
sole supporting member, a channeling knife and
knife mounting structure slidable to and from
releasing said mechanism from said means and
for positioning said knives disengaged from said
11. In a machine for operating on shoe soles, a
10 said member, a spring thrusting said structure ' support for the sole,v a channeling knife and a 1O
towardssaid member, a main shaft for mov
ing said knife and structurealong said mem—
rough rounding knife, mechanism for moving
said knives towards said support to cut the work,
ber to out a channel in a sole, a driver for
means for driving said mechanism, and a single
manually controlled device for releasing said
said main shaft,’ means connecting said driver
15 and main shaft, a. device for holding said shaft
and driver disconnected and for counteracting
said structure spring, and a manuallyoperable
part for rendering said device ineffective.
' 6. Ina machine for channeling shoe soles, a
mechanism from said means and simultaneously 15
engaging different portions of said mechanism
to hold said knives in position disengaged from
said work.
12. In‘a machine for operating on shoe soles, a
channeling knife, a spring for moving said knife drivingpulley, a rough rounding knife, means for 20
into functioning position, a main shaft for "oscillating said knife to cut through the work, a
operating said knife, a driving member,’ a , channeling knife, a spring for thrusting said
channeling knife into the work, a shaft for driv
driven member ?xed on, said’shaft, and a clutch
between said members, a spring for holding said ing said means and mechanism reciprocating said
channeling knife and the work to cut a channel in, 25
clutch inoperative,
a foot
said treadle
clutch into
and functioning‘
connecting the latter, 'a driving pulley, a. clutch between said
position when said treadle is depressed, and a_de- I , pulley and shaft, a spring for disengaging said
vice operable automatically when said treadle’ is
clutch and for withdrawing said channeling knife
released for moving said knife out of functioning
from the work, and a pedal controlled device con
nected. to said spring for rendering said spring
7'7. In a machinefor channeling shoe soles, a
‘ ineffective;
13.. In a machine for operating on shoe soles, a
structure for thrusting the same towards said ‘ work support, a slidable clamping member‘ for
support, means tendingto move said knife away holding the work against said support, a chan
support for the work, a channeling knife, spring
from said support against the thrust of said
spring structure, and a foot treadle connected to
said means and operating when depressed to
render said means ineffective.
8. In a machine for operating on shoe soles,
40 work support, a spring actuated clamping member
for holding the work against said support, a
' rough rounding knife, mechanism for moving said
neling knife mounted, on said member, a spring 35
for thrusting said member towards said support
‘and thrusting said knife into the work resting
thereon, a rounding knife, a shaft for mechanism
operating said knives to cut the work, a driver for
said shaft, a clutch for engaging said shaft and 40
driver, there being a spring tending to move the
clutch structure to disengaging position, a lever
knife towards and from the work, a‘driver for connected tosaid clutch and member and mov
said 'mechanism, a device for realeasing said ' able in one direction to render said-latter men
45 mechanism from said driver and moving said tioned spring ineffective whereby said clutch en 45
clamping member away from said work support, gages said shaft and driver and said clamping
a brake controlled by said device for stopping member and channeling knife move towards said
said mechanism with said knife withdrawn from support and the work thereon, and a foot treadle
connected to said lever' for moving it in said
the work, and a single manually operable struc
ture for rendering said device ineffective and for , direction.
14. A structure as described in claim 13 which
engaging said mechanism and .driver.
I 9. In a machine for operating on shoe soles,'a ,
also includesmeans cooperating with said mech
channeling knife, a rough rounding knife, ‘a
anism to stop the same, when the clutch is re
shaft, for operating said knives to cut the
leased,'with the rounding knife withdrawn from
work, means for driving said shaft, a spring for
withdrawing said channeling knife from the work,’
and a single manually controlled device for en
gaging said shaft and means and'for counteract
the work.
ing the effect of said- spring.
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