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Oct. 22, 1946.
,4 c. A. ROBlNSON
2,409,642
LASTING MACHINE
Original Filed Dec. 20, 1944_
2 Sheets-Sheet 1
2
Inventor
CharlesAJE’obinson
h is Afrorn e51
.
M!
Oct, 22, 1946. ,
c. A. ROBINSON
2,409,642
LASTING MACHINE
Original Filed Dec. 20, 1944
2 Sheets-Sheet 2
Charles A . Fobinson
Patented Oct. 22, 1946
2,409,642 ‘
UNITED STATES‘ PATENT ‘ OFFICE
2,409,642 ‘
LASTING MACHINE
Charles A. Robinson, Salem, Mass., assignor to
United Shoe Machinery Corporation, Fleming
ton, N. J., a corporation of'New Jersey
Original application December 20, 1944, Serial No.
568,964. Divided and this ‘application August
10, 1945, Serial No. 610,111
5 Claims. (01. 12-14)
2
This invention relates to lasting machines, the
present application being a division of a copend
ing application for Letters Patent for improve
ments in Machines for use in the manufacture
of shoes, Serial No. 568,964, ?led on December20,
1944. The machine shown in that copending ap
plication, in which the present invention is here
in illustrated as embodied, is a power-operated
in the upwiping operation ‘with danger of apply
ing excessive pressure to the upper.
The invention will now be more particularly
described with reference to the accompanying
drawings and thereafter pointed out in the claims.
In the drawings,
,
Fig. 1 is a view in right-hand side elevation of
a portion of the machine in which the invention
toe-lasting machine constructed in many respects '
is shown as embodied;
Fig, 2 is a plan view on an enlarged scale of
as disclosed in United States Letters Patent No. vl0
the wipers and of parts closely associated there
2,160,846, granted on June 6, 1939, on an appli
cation of F. C. Eastman’s and A. F, Pym’s‘. In
with; and
‘
r
Fig. 3 is a view partly in right-hand side ele
common with that prior disclosure the machine
vation and partly in section, also on an enlarged
is provided with wipers which in the course of
a cycle of power operations of the machine are 15 scale, showing portions of the wiper-operating
moved heightwise of the last to perform what is
means.
7
i
commonly known as an upwiping operation on
As more fully disclosed in the above-mentioned
the toe end of the upper and in ‘automatically
determined time relation to that movement are
advanced lengthwise of the last and are closed
inwardly widthwise of thelast into positions to
render them thus effective on the upper, such
invention is herein shown as embodied is pro
vided with a device 2 for positioning a welt
shoe in proper relation to the toe-lasting means
copending application, the machine in which the‘
by engagement with the bottom face’ of the toe
end of the insole and with the inner face of the
closing action on the wipers terminating after the‘
lip of the insole at the end and the sides of the
beginning of their movement heightwise of the
last. An object of the present‘invention is to 25 toe upon presentation of the shoe to the machine,
the position of‘ a shoe thus determined being
provide improved means for operating the wipers,
indicated by broken lines in Fig. 3. Shortly after
and especially to render more uniform their oper
the starting of the cycle of power operations of
ations on shoes of di?erent styles. While the in
the machine the shoe is clamped against the
vention is herein illustrated as embodied‘ in a
modi?cation of the wiper-operating means shown 80 shoe-positioning device 2 by a toe rest 4 which is
in the above-mentioned Letters Patent, it is to
be understood that it is not thus limited in its
moved upwardly into clamping position. As part
of the lasting means the machine has a pair of
wipers B which are advanced lengthwise of the
last and are closed inwardly widthwise of the
With the above-stated general object‘ in view,
the invention provides means for varying, as may 35 last to embrace the upper closely about the toe
end of the last and in automatically determined
be desirable for shoes of di?erent‘styles, the‘ time
time relation to their advancing and closing
in the operation of the machine when‘the closing
movements are swung upwardly to wipe the upper
action on the wipers to bring them into positions
heightwise of the last, after which they-are fur
for the upwiping operation is terminated. The
construction shown includes a cam and connec 40 ther advanced and closed to wipe the marginal
portion. of the upper inwardly over the feather
tions leading therefrom to the wipers for par
and against the lip of the insole, the lip being
tially closing them, and another cam which by
supported against the inward pressure ‘of the
relative movement of parts of those connections
wipers by the shoe-positioning device 2. The
supplements the wiper-closing action of the first,
wipers are secured to wiper holders 8 which are
cam and is adjustable to vary, the time of its
‘supported on a wiper carrier Hi and are guided
action on ‘the wipers. Accordingly, the, time
applicability.
‘
‘
i
1
when the wipers by their closing movements ar
by the carrier for movements about an axis ex
tending heightwise of the shoe substantially at
rive in positions for effective upwiping action on
the end of the toe to close the Wipers inwardly
the “upper may be advanced or delayed relatively
to the time of their movement heightwise of the 50 widthwise of the shoe. The wiper carrier is sup
ported at its front end for movements to advance
last, depending upon the style of shoe to be lasted,
and retract the wipers lengthwise of the shoe on
so that if the, shoelhas a comparatively low or
a pair of links I2 which are spaced apart width
receding toe the wiperswill not be closed so far
wise of the shoe and are pivotally connected at
inwardly as to necessitate that they be thereafter
wedged apart substantial distances by the shoe 55 their upper ends to the carrier. At its rear end
2,409,642
4
the wiper carrier is further supported on the
upper end of a lever 54 which is pivotally mounted
between its upper and lower ends on a fulcrum
rod [5. The upper arm of the lever M is pivot
movement is imparted to the bell-crank lever 4G
to close the wipers in time relation to their
advancing movement lengthwise of the shoe and
when reverse movement is imparted to the arm
ally connected by a rod I8 to the Wiper carrier Ci 5'6 the wipers are opened. By the portion a of
the cam track'52 closing. movements are imparted
and, in effect. serves as a link substantially
to the wipers preparatory to the wiping of the
parallel to'the links l2: The links F2 are pivotally
upper heightwise of the last, and by the portion 1)
connected at their lower ends to arms 25, only one
of.‘ the cam track they are thereafter further
of which is visible in the drawings, these arms
being fast on a rockshaft 22 mounted in bearings - 1 O.
closed-to wipe the marginal portion of the upper
in the frame of the machine. Also fast on the
rockshaft 22 is an arm 24 provided with axrollfz?.»
which lies in a cam track 28'2f'orm‘ed ineone'side
of a cam member (not shown) fast‘o'n a cam
inwardly over the insole, these movements being
herein
shaft 36.
shown
Only
byadotted
fragment
lines,of but
this.itcam
corresponds:
trackis.
withpartial'retractive movements thereof length
to the cam track I98 of the above-mentioned Let:
wise of» the‘ shoe; the downward pressure of the
wipers on the upper having been somewhat re
lieved at that time by the action of the cam
track 28 on the Wiper carrier Iii. Thereafter the
portion (1' of the cam. track 52' again closes the
wipers simultaneously with a second advance
thereof lengthwise of the shoe, in' time relation
to which movements they are again moved down—
wardly to increase their pressure on the upper,
all in accordance generally with the disclosure
of the above-mentionedLetters Patent.
It will be evident that if'the closing movements
ters Patent No. 2,160,846. Through this mecha
nism the wiper carrier ii) is swung upwardly
about the rod it to cause the wipers to wipe
the upper heightwise of the last and is later oper
ated to increase the downward pressure of‘ the
wipers on the marginal portion of‘ the upper over
the insole. To advance and retract the wiper
carrier and the wipers lengthwise of the shoe,
the lever I4 is swung about the rod‘. l6‘ by a cam
track 32 formed in one side of a gear ‘wheel 3!!»
on the‘ cam‘ shaft 33, the lever carrying a roll 35
which lies in the cam track; It will be under
stood that' when the wiper carrier is thus oper
ated‘l the links [2‘ swing idly about their pivotal
accompanied by: corresponding bodily advancing
movements of the’ wipers lengthwise of the shoe.
The receding portion 0 of the cam track later
serves-partially to openthe wipers simultaneously
of the wipers to bringtheir edges into‘ positions
for wiping the upper heightwise of the last take
place, as heretofore, in an invariable time relation
to their upwipingmovements, the positions of the
edges of the wipers when they ?rst become effec
connections with the arms 29. Through spring
means not herein shown but fully disclosed in
tive on the upper may depend upon the style of '
Letters Patent No. 2,160,846 provision is afforded
for‘ yield to" prevent damage to the shoe or to - . the shoe. That is, in operating, foriexample, on a
shoe having a comparatively high toe the wipers
the machine when the upstanding margin of
the‘ upper is pressed against the lip of the insole
may not be closed inwardly to- any substantial
extent beyond’ the widest‘ portion of the toe, while
by the action of the lever M on the wiper car
in- operating on a- shoe having a comparatively
The wiper holders 8 are operated to close the 40 low or receding toe they maybe closed more or
wipers inwardly widthwise of the shoe through
less inwardly under the sides of’ the toe before
links 38 (Figs. 2 and 3) connected respectively
they become effective on the upper. In the lat
ter case the wipers are thereafter necessarily’
to the different holders and both operated by a
forced somewhat apart against the resistance of‘
slide 120‘ mounted for movements lengthwise of
the springs 42 by thewedging action of the shoe
the shoe on the wiper carrier I9. Associated with
these links are comparatively light springs 42
thereon as they are-moved farther upwardly. To
through which the wipers are pressed yieldingly
avoid any possible‘ danger of» excessive pressure
against the sides of the toe in the wiping of the
of the edges of the wipers on the upper under
upper heightwise of the last. As disclosed in
those conditions, the construction herein shown
Letters Patent No. 2,160,846, the yield'of these 50: is such that the time when- the- closing action on
the wipers to bring them into'positions for wiping
springs is limited to render the slide it] positive
the upper heightwise of the last is terminated
in its action on the wiper holders 8 when the
upper is thereafter pressed inwardly by the wipers
may be varied. To this end, the closing of the
rier.
against the lip of the insole. Through spring
mechanism 44, the construction of which need
not be herein described in detail in view of the
disclosure in the above-mentioned Letters Pat
ent, the slide G9 is operated to close the wipers
by a bell-crank lever t6 mounted to swing about
a shaft ‘it supported by the wiper carrier i5), this
be1l~crank lever being connected by a pair of
links- Bil, only one of which is herein shown, to
the‘ spring mechanism. This spring mechanism
is yieldable to prevent damage to the shoe or
to the machine when the upper is pressed against
the lip of the insole by the closing of the wipers.
wipers to those positions'is effected, not alone by
- the cam track 52, but by additional means which
supplementsthe action of this cam track and the
time of operation of which is adjustably variable.
As» shown in Fig. 3, the means connecting the
wiper-closing bell-crank lever 4.6 to the arm 8-’)
which operates it comprises a pair of toggle links
62 and Eli pivotally connected respectively to the
bell-crank lever and to the arm and connected
together by a pin 66. This pin is connected by
a link 68 to an arm ‘H3 which is fast on the pre
viously mentioned shaft ‘38 on which the bell
crank lever 46 is loosely mounted, and also fast
The bell~crank lever 4-5 is operated by a cam
track 52 formed in one side of the gear wheel
34 and acting on a roll 54 carried by an arm 55
on this shaft is an arm 12 (Fig. 1) connected by
a link ‘M to the upper end of an arm 76 which is
pivotally mounted at its lower end on a bracket
which is fast on a roc'kshaft 58 on the frame.
Also fast on this rockshaft is an arm 6% con
'18 on the frame.
nected to the bell-crank lever 45 by means pres
ently to be described, so that when swinging
movement in a counterclockwise direction (Fig.
of a cam 82 which is secured on one side of an
3) is imparted to the arm 56. corresponding
Mounted 0n the arm 16 is a
roll BE} arranged to be engaged by the periphery
other cam 84 with which the machine is provided,
this cam being fast on the cam shaft 30. The
cam 82 is thus adjustably secured to the cam 84
2,409,642
by screws 86 extending through slots 88 in the
cam 82. A spring 90 connected to the arm 16
tends to swing the arm toward the left, as the
parts are viewed in Fig. 1, and thereby tends to
turn the shaft 48 in a clockwise direction, the roll
at being initially spaced somewhat from the cam
82. A screw 92 (Fig. 3) which is threaded in an
upwardly extending lug on the upper end of the
link 64 and engages a lug on the side of the link
*62 limits the turning of the shaft 48 under the i
in?uence of the spring 90 and adjustably deter
mines the normal positions of the toggle links 62,
64 with the toggle broken toward the left as the
parts are viewed in Fig. 3. In these positions the
links provide an operating connection between
6
tions thus to act on the upper, said wiper-closing
means being adjustable to terminate such closing
action on the wipers at a variably predetermined
time with respect to said relative movement.
2. In a lasting machine, wipers for engaging
an upper about the toe end of a last, power
operated means for effecting relative movement
of said wipers and the last to cause the wipers to
wipe the upper heightwise of the last, and means
for closing the wipers inwardly widthwise of the
last in predetermined time relation to said rel
ative movement to bring them into positions
thus to act on the upper, said wiper-closing
means including a cam adjustable to terminate
its closing action on the wipers at a variably pre
the arm 60 and the bell-crank lever 46. At a time
determined time with respect to said relative
in the cycle of operations which may be varied
movement.
by adjustment of the cam 82 about the axis of
3. In a lasting machine, wipers for engaging
the camshaft 30 in the manner permitted by its
an upper about the toe end of a last, power
screw-and-slot connection with the cam 84 a 20 operated means for effecting relative movement
rise 94 on the cam 82 engages the roll 8!] and
of said wipers and the last to cause the wipers to
through the mechanism described straightens the
wipe the upper heightwise of the last, means for
toggle 62, 64, thereby imparting further closing ' closing the wipers inwardly widthwise of the last
movements to the wipers supplementary to the
in predetermined time relation to said relative
closing movements effected by the portion a of . movement to bring them into positions thus to
the cam track 52. In this manner the wipers
act on.the upper, said wiper-closing means in
are closed to positions for the effective wiping
cluding a cam for partially closing the wipers
of the upper heightwise of the last. It will be
and another cam for further closing them, said
understood that in operating on shoes having
other cam being adjustable to terminate its clos
comparatively high toes the cam 82 will be so 30 ing action on the wipers at a variably prede
adjusted as to advance the time of the straight
termined time with respect to said relative
ening of the toggle, and that in operating on
shoes having comparatively low or receding toes
the cam will be adjusted to delay the straight
movement.
4. In a lasting machine, wipers for engaging
an upper about the toe end of a last, power
ening of the toggle relatively to the movement 35 operated means for effecting relative movement
of the wipers heightwise of the last, so that the
of said wipers and the last to cause the‘wipers
wipers will not be closed inwardly under the sides
to wipe the upper heightwise of the last, a cam
of the toe in such manner as to cause them there
and connections leading therefrom to the wipers
after to be wedged apart to‘ any substantial ex
for closing them inwardly widthwise of the last
tent by the action of the shoe thereon. It will 4 0 toward positions for thus operating on the up
further be understood that adjustment of the
screw 92 will serve to vary the initial positions
of the wipers widthwise of the shoe and corre
spondingly to vary the amount of movement im
parted to the wipers by the cam 82 by varying
the position of the roll 80 relatively to the cam.
Since the manner of operation of the construc
tion provided by the invention has been fully ex
plained above, no further explanation thereof is
necessary.
‘
Having described the invention, what I claim
as new and desire to secure by Letters Patent
of the United States is:
1. In a‘ lasting machine, wipers for engaging
an upper about the toe end of a last, power
operated means for effecting relative movement
of said wipers and the last to cause the wipers
to wipe the upper heightwise of the last, and
means for closing the wipers inwardly widthwise
of the last in predetermined time relation to 60
said relative movement to bring them into posi
per, and another cam for supplementing the
wiper-closing action of said ?rst-named cam by
relative movement of parts of said connections,
said other cam being adjustable to vary the time
of its action on the wipers.
5. In a lasting machine, wipers for engaging
an upper about the toe end of a last, power
operated means for effecting‘relative movement
of said wipers and the last to cause the wipers
to wipe the upper heightwise of the last, a cam
and connections leading therefrom to the wipers
for closing them inwardly widthwise of the last
toward positions for thus operating on the upper,
said connections ‘including a toggle bodily mov
able thus to act on the wipers, and another cam
associated with said toggle for ?exing it and for
thereby supplementing the wiper-closing action
of said ?rst-named cam, said other cam being
adjustable to vary the time of its action on the
wipers.
‘
‘
CHARLES A. ROBINSON.
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