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Патент USA US2120781

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June 14, 1938.
w; F.‘ GREEN
'
2,120,731
SIDE LASTING MACHINE
_
' Filed Sept. 9, 1935
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Juhg14,1938.
'
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W.F. GREEN
_
'
2,120,781
SIDE LASTING MACHI‘NE
Filed Sept. 9, 1935
2 ‘Sheets-Sheet 2
"
I/v VENTOE
4 Wf/h'am Ff Green.
2,120,78l
Patented June 14, 1938
UNITED STATES PATET OFFECE
2,120,781
SIDE-LASTING MACHINE
William F. Green, St. Louis, Mo., assignor to
Valley Shoe Corporation, St. Louis, Me, a cor
poration of Missouri
Application September 9, 1935, Serial No. 39,695
5 Claims.
This invention relates generally to shoe-manu
facturing machinery and, more particularly, to a
certain new and useful improvement in shoe
machinery of the type commonly known as side
5
lasting machines.
‘
Side-lasting, as is well known, comprises that
step in the bottoming of shoes especially of the
glued or cemented type, wherein the upper at
its lower margin is concurrently pulled over and
10 temporarily tacked or nailed to the inner sole
for retaining or securing the upper in its pulled
or stretched condition during the setting or hard
ening of the glue, cement, or other adhesive.
For perfection in side-lasting and in the re
15 suiting fit of the shoe, it is essential, as I have
discovered, that the pulling, on the respective
sides of the shoe, be started adjacent the toe
and continued progressively stepwby-step toward
the heel, with the direction of the pull at all
20 times diagonally from the heel toward the toe,
and that the pull on the upper on both sides of
the shoe be substantially uniform and equal.
Now, in side-lasting machines for the produc
tion of cemented shoes as today generally con
25 structed, so far as I am aware, the pulling over
device or lasting gripper is so located for opera
tion adjacent the nailing device that two oper
ators are required to complete the lasting of a
single shoe, one operator lasting one side of the
30 shoe and the operation of lasting being then in
terrupted for delivery of the shoe to the second
operator for lasting of the other side thereof.
No two operators working exactly or precisely
alike, it results that the pull on the upper is
35 non-uniform or unequal, the fit and appearance
of the ?nished shoe being consequently impaired
and the cost and time of production being to such
extent increased.
My present invention has hence for its primary
4 0 object the provision in a side-lasting machine
of a pulling over device which is selectively and
at the will of the operator shiftable for opera
tion on either side of the nailing device, whereby
the shoe may with ease, convenience, and facility
45 be completely lasted by the same operator, the
lasting operation continuing to completion with
out interruption and a uniformly lasted and sub
stantially perfectly ?tting shoe resulting with a
corresponding reduction in time and cost of pro
50 duction.
And with the above and other objects in view,
my invention resides in the novel features of
form, construction, arrangement, and combina
tion of parts all as presently described and pointed
55 out in the claims.
(Cl. 12-—2)
In the accompanying drawings (two sheets) ,—~
Figure l is a broken or iragmental view of a
side-lasting machine embodying a shiftable pull
ing over device of my invention, merely such
parts of the machine being shown as are op-
5
eratively associated therewith and other parts
of the machine being omitted;
Figure 2 is a diagrammatic fragmentary per
spective view of the pulling over device as dis
posed on one side of the nailing device;
10
Figure 3 is a view, similar to Figure 2, show
ing the pulling over device disposed on the other
side of the nailing device;
Figure 4 is a fragmentary perspective view of
a shoe being worked on one of its sides by the i5
side-lasting machine, merely fragmentary rep»
resentation of associated parts of the machine
being shown and other parts omitted;
Figure 5 is a fragmentary perspective view,
similar to Figure 4, showing the shoe being 20
worked on its other side; and
Figure 6 is a fragmentary plan view taken
approximately along the line 6—ii, Figure 1.
Referring now more in detail and by reference
characters to the drawings, which illustrate a 25
preferred embodiment of my invention in con
nection with a standard or commercial type of
side-lasting machine here only fragmentally
shown to such extent as is necessary to an un—
derstanding of the present invention, and of '30
such machine A is the so-called nailing device,
which, in turn, includes a stationary lifter-foot
or rest I over which, in the operation of the
machine, the marginal portion 2 of the upper 3
is shifted for lifting the same from the inner sole 35
4, and 5 is a reciprocatory presser-foot, which
during the nailing operation, ?rmly folds the
upper marginal-portion 2 over the marginal por
tion of the sole it, as will be well understood.
Similarly, ii is the nail—driving plunger, and 40
“I the nails ortacks which are driven through
the upper-margin 2 into the sole 4.
The pulling~over means or lasting gripper B
includes a bracket or arm M in ?xed position in
the machine, and mounted at an end in the 45
bracket M by means of a ball and socket joint,
such as that shown at 613, for both oscillatory
and axially rotative movement is a sleeve ll.
Fixed, in turn, on the lower end of the sleeve II
is a pincer'head 8 equipped preferably with a ‘50
stationary or ?xed jaw 9.
Pivoted on the head 8 for co~operation with
the jaw 9, is a movable jaw it adapted for actu
ation by means of a shaft or rod l2 disposed
within the head a and sleeve I! for lengthwise 55'
2
2,120,781
reciprocation under the in?uence in one direc
tion by a rocker-arm 53 and yieldingly in the
other direction by a spring 56 coiled on the
sleeve || intermediate an abutment or guide l5
on a presently described member C of the ma
chine and a pin 65 ?xed to the shaft I2 and
working in a slot longitudinally provided in the
sleeve H, all as best seen in Figure 1, the upper
margin 2 of the shoe being worked being slipped
to one extremity of a link 33, whose other end
is shaped to form a head 34 provided with a lon
gitudinal slot 35 through which projects vertical
cam-shaft 35 likewise suitably mounted for ro
tation in the machine.
The head 34 is equipped with a pair of spaced
follower-rollers 31, which have rolling contact
with the respective diametrically opposite pe
10 over the jaw 9 when the upper-margin is lifted
ripheral faces of a three lobe cam 38 mounted on
for such purpose by the foot I and the jaw H),
ametrically opposed by a valley b, whereby, on
during the operation of the machine, being ad
vanced toward and retracted from the jaw 5
for successively gripping and then releasing the
15 so lifted upper-margin 2.
C designates a carriage through whose boss
or abutment E5 the sleeve II is guidingly passed,
and whose body-portion l6 has engagement ‘for
sliding movement in bearings it on the respec
20 tive legs of a reciprocatory bifurcated member or
yoke l9. During the operation of the machine,
it may be stated that the yoke i9 is, by suitable
mechanism, not here shown, reciprocatorily shift
ed at suitable moments for advancing the pulling
25 over device or lasting gripper B for gripping the
3.0
upper-margin 2, and then biasing the device B
in the opposite direction for pulling or stretch
ing the gripped upper-margin 2 over and upon
the inner-sole 4, in the manner and for the pur
pose well known to those skilled in the art.
Having thus brie?y described such several parts
of the side lasting machine which are operatively
associated with my present. invention, I will now
proceed to a more particular description of my
35 present invention.
It may ?rst be stated that the yoke I5 is sym
metrically disposed with respect to the nailing
device A, and that the carriage C has its body
portion I5 extended at its opposite ends, as at IT,
IT, for shiftable movement transversely of the
yoke IQ for the purpose of swingably disposing the
pulling over device B to one side or the other
of the nailing device A.
A plate 20 is mounted on and between the
45 bearings l8 and at its respective opposite ends
is equipped with upstanding horns or stops 2|
adapted for impingement by the respective oppo
site, ends or shoes H of the carriage C‘ for strictly
limiting the transverse motion of the carriage C
50 for disposing the pulling over device B, when in
the respective opposite ends of its stroke, in pre
determined relationship with respect to, and on
corresponding opposite sides of, the nailing de
55
vice A.
22 designates a goose-neckedeshaped rod or
shifter-bar provided at one end with an eye 23,
through which and into the guide or boss l5 of
carriage C‘ is passed a cap-screw 23’ for pivotally
mounting the bar 22 on the carriage C.
to
-
At its free end, the bar 22 is slidably and loosely
embraced by an eye 24 on the one or forward
end of an arm 25, which extends rearwardly in
the machine, the eye 24 being engaged between
the opposing ends of a pair of coil or buifer
6.5
springs 25, 26', adjustably positioned on the bar
22 by respective sets of jam-nuts 27, as best seen
in Figure 1.
At its other or rear end, the arm 25 passes into
an aperture 28 provided in the free end of a
10.
crank 29, to which latter, the arm 25 is suitably
connected, as by a pin 30, the crank 29 being, in
turn, mounted, on a shaft 3| suitably disposed
vertically for rotation in’ the machine.
75
shaft 3|, is pivotally connected at its free end,
A second crank 32, also ?xed at an end on the
the shaft 36, each lobe a of the cam 38 being di
10
partial or step-by-step one-sixth rotation of the
cam 38, the carriage C is caused to take its re
spective oppositely shifted positions relatively to
the yoke l9.
15
Mounted also on the shaft 36, is a ratchet or
toothed wheel 39- having preferably six equally
spaced teeth, as best seen in Figure 6. On di
ametrically opposite sides of the ratchet 39, are
disposed respective pawls 40, 4|, and connecting
the pawls 4|], 4| for biasing the same on the pe
riphery of the ratchet 39, is a spring 42.
The pawl 40 is pivoted, as at 43, to a suitable
portioncof the frame 44 of the machine. The pawl
4| is pivoted, as at 45, to the upper leg of a
C~shaped yoke 46, best seen in Figure 1, which
embraces abracket 41 projecting from the frame
portion 44 and serving as a bearing for the shaft
36. At its lower leg, the yoke 46 is rigidly se
cured to a quill or sleeve 48 journaled on that por
tion of the shaft 36 which depends below the bear
39
ing 41.
The’ sleeve 48 is provided with a longitudinal
slot 49, in which is engaged or works a pin 50
laterally projecting from a standard 5| upstand
ing from a bell crank 52 pivotally mounted on
the shaft 36 for motion in a horizontal plane.
One arm of the bell-crank 52 is equipped with
a tensional member in the form of a spring 53,
which bears against a frame-portion 54 for bias 40.
ing the crank 52 for normally drawing the pawl
4| backwardly over the teeth of the'ratchet-wheel
39.,
To the other arm of the bell-crank 52, is piv
otally connected one end of a link 55, which ex 45
tends toward the front of the machine and at
its, other end is provided with a knee-cup 56, as
best seen in Figure 1.
- Intermediate its ends, the link, 55 is provided
with a longitudinal slot 51, which works over a 50
pin 58 depending from a machine-member 59,
whereby, when the operator of the machine pre
sents his knee, as 60, into the cup 56 and presses
thereagainst, the link 55 is guided for longitudinal
movement inwardly of the machine and rotatably 55
actuates the bell~crank 52 against the bias of the
spring 53. Such rotative movement of the crank
52 is, by means of the pin 5|) on the standard 5|,
communicated to the sleeve 48 and thus to the
yoke 46 for moving the pawl 4| against a tooth on 60
the ratchet-wheel 39.
Normally, the relationship between the pawls
40, 4|, and the ratchet 39 is such that the pawl
4i)v is engaged with a tooth c of the ratchet 39,
while the pawl 4| is riding on the periphery of a 65
diametrically opposite tooth d.
It will be observed that the movement of the
sleeve 48 is effected bythe motion of the knee
transmitted to it through the link 55 and the bell
crank 52. In the case of machines designed for 70
heavy work, it may be desirable to actuate the
three lobed cam38 by power driven means. This
may be accomplished, as shown in, Figure 6, by
providing a plunger 6| which could be reciprocal-_
ly mounted in a slide 52. The plunger 6| is con, 75
3
2,120,781
nected by a conventional train of mechanism
(not shown) to any suitable source of reciprocat
ing power in the lasting machine. Lasting ma
chines generally include a number of direct power
driven reciprocating parts of conventional design
which may be utilized as a source of reciprocating
power for the plunger 6| in a conventional man
ner; therefore this is not shown. The slide 62
is substantially wider than the plunger 6|, which
10 latter is spring~pressed against that wall of" the
slide 62 which is adjacent to the ratchet wheel 39.
The plunger BI is so arranged that it will re
ciprocate freely past the tooth e of the ratchet
35!, maintaining a sliding contact with the outer
15 peripheral surface thereof, as shown in Figure 3.
When the cup 56 is actuated under pressure of the
operator’s knee, the sleeve 48 is rotatively actu
ated, and, in turn, the ratchet 39 is rotated under
engagement of the pawl 4| with the tooth c,
whereupon the ratchet tooth e will press upward
ly against the plunger 6| and shift the same away
from the adjacent wall of the slide 62 toward the
opposite wall, thus permitting the ratchet 39 to
freely rotate under the impulse of the pawl 4|.
2-5 Meanwhile the plunger 6| is continuously re
ciprocating. and the plunger 6| returns into the
slide from its most extended position, it will pass
over the tooth e, and as it clears the tooth e on
its reciprocation, it will be moved sidewise into
30 position against the adjacent wall of the slide
$52, so that upon its next forward movement, the
leading edge of the plunger Bl will operatively
engage the tooth e in a pawllike action and pro
duce continued rotation of the ratchet 39. It
35 will be seen that, in this modi?cation, the ratchet
39 and its associated sleeve 48 act in cooperation
with the link 55 to condition the ratchet plunger
mechanism for mutual co-operation to advance
the pawl and correspondingly move the three
40 lobed cam 38 one step.
Whether the ratchet 39 is operated complete
ly by the action of the operator’s knee or partly
by the plunger arrangement above described, the
ratchet 39 is preferably so arranged that one
45 complete movement thereof will produce a rota
tion of GO-degrees in the cam 38, whereby the link
is shifted for, in turn, swinging the crank 29
and thus causing the arm 25 to compress one of
the springs, as 26, on the shifter-bar 22 for bias
ing the carriage C in a direction for causing the
same to move from its previous position to its
opposite position for swinging the pulling over
device B from one side to the other of the nailing
station A.
In use and operation, the pulling operation, as
has been said, is started at the toe and progres
sively worked, step by step, down one side of the
shoe toward the heel, the direction of the pull
being diagonally from the heel toward the toe,
which is e?ected by the mechanism of the ma
chine, which rotatably shifts the pulling over
device B in its vertical axis, as well known to
those skilled in the art.
.
It will be understood that, the margins of the
upper 53 and sole 4 having previously had the ce
ment or other adhesive suitably applied thereto,
in so traveling down, as it may be said, a side of
the shoe, the pulling over device B is, in the man
ner described, disposed in advance, that is to say,
70 on the heel-ward side, of the nailing device A, in
order that the successive nails 1 may be driven
through the stretched or pulled upper-margin 2
and into the sole 4 as shown in Figure 4, for tem
porarily securing the same together in lasted rela
75 tion during the setting of the cement.
When that particular side of the shoe has been
pulled-over and nailed, the operator turns the
shoe end forend, and, while doing so, also shifts
the pulling-over device B to the opposite side of
the nailing station A, for, in turn, again dispos
ing the pu11ing~=over device B in advance, or on
the heelward side, of the nailing device A for sim
ilarly lasting the other side of the shoe, as shown
in Figure 5, the direction of the pull on the upper
sing likewise diagonally from the heel toward 10
the toe.
,
Thus, in a simple and highly facile manner, my
invention provides for and enables the complete
lasting of a shoe by the same operator in sub
stantially a continuous, uninterrupted operation, 15
resulting not only in a reduction in cost and
time of production, but also in a graceful, neatly
and snugly ?tting, and uniformly lasted shoe.
It will. be understood that changes and modi
?cations in the form, construction, arrangement, 20
combination of the several parts of the ma
chine and pull-over may be made and substituted
for those herein shown and described without de
parting from the nature and principle of my in
vention.
25
Having thus described my invention,_what I
claim and desire to secure by Letters Patent is,
1. In a side-lasting machine, in combination,
nailing-means, a pulling over means suspended
for swinging movement, a yoke, a carriage hav 30
ing engagement with the pulling over means and
shiftable in the yoke for swinging the pulling
over means from one side to the other of the
nailing-station for locating the pulling over
means'lfor lasting on either side of the nailing 35
means, and means for effecting shifting move
ment of the carriage relatively to the yoke, said
means including a cam shiftable to respective op~
erative positions and a ratchet and pawl mech
anism for actuating the cam.
2. In a side-lasting machine, in combination,
nailing means, a pulling over means suspended
for swinging movement, a yoke, a carriage hav
ing engagement with the pulling over means and
shiftable in the yoke for swinging the pulling 45
over means from one side to the other of the nail
ing means for locating the pulling over means for
lasting on either side of the nailing means, and
means for e?ecting shifting movement of the
carriage relatively to the yoke, said means in 50
cluding a cam shiftable to respective operative
positions, a ratchet and pawl for actuating the
cam, mechanism for shifting the pawl for actu
ating the ratchet for moving the cam from one
operative position to another, and a reciprocatory 55
member in the machine for then engaging the
ratchet for completing the movement of the cam
to the other position.
3. In a side-lasting machine, in combination,
nailing means, pulling-over means suspended for 60
swinging movement, a yoke, a carriage having en
gagement with the pulling-over means and shift
able in the yoke for swinging the pulling-over
means from one side to the other of the nailing 65
means for locating the pulling-over means for
lasting on either side of the nailing means, a car
riage arm mounted on the carriage, a link op
erably connected to the arm, a rock-arm con
nected to the link for moving the link, the car 70
ria ge and the associated carriage arm sidewise to
a selected position, a three lobed cam actuating
ly connected to the rock-arm, driving means for
producing stepwise rotation of the cam, and
means for selectively connecting the cam to the 76
4.x
2,120,781?"
drlvi-nglmeans‘tolproduce'a single stepwise move
ment thereof-.7
4‘. In a side-lasting machine, in combination,
nailing :means‘, pulling-over means suspended for
swingingimovement, a yoke, a carriage having
engagement with ‘the pulling-over means and
shift‘abIe in=the yoke for swinging the pulling
over means from one side to the other of the
nailing means for locating the pulling-over means
101 for lasting on either side of the nailing means, a
carriage arm mounted on the carriage, a link
op'erably'conn'ected to the arm, a rock-arm con
nected to the link for moving the link, the car
riage‘ and the associated carriage arm sidewise to
engagingvthexratchet for-completing the move-v
ment’ of the camrtothe'other position.
5; In! a; side-lasting machine, in combination,
nailing‘ means; wpulling-over means suspended
for swinging movement; a yoke, a carriage hav
ing'ienga‘gement‘with'the pulling-over means and
shiftable'in the yoke for swinging the pulling
overl means‘ from‘ one side to the other of the
nailing means for locating the pulling-over means
for lastingioperation'on either side of the nailing 10%
means;.aniarm connected to and extending out
wardly from» the carriage, a link connected to
a selected position, a three lobed cam actuatingly
the‘ arm forv limited resilient movement whereby
the‘carriage: and‘ arm~may move through short
distances with respect to the link in accordance 155
connected to the rock-arm, and driving means
for producing stepwise rotation of the cam, said
means including a ratchet and pawl for actuat
riage shifting movementof the link relative to
2033 ingthecam, mechanism for shifting the pawl
for actuating the ratchet for moving the cam
from oneoperative position toward another, and
a recipro'catory- member in the machine for then
with the normal ‘reciprocatory and vibrationary
movements of the machine without affecting the
carriage: position, and means for e?ective car
the'yoke; said means including a cam shiftable 20
to! respective operative'positions, and a ratchet
and pawlxmechanism for'actuating the cam.
WILLIAM‘ F. GREEN.
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