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Патент USA US2409448

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15,‘ 1946.
A._ PERRI
I 2,409,447
RE-LASTING MACHINE
Filed ‘Jan. 13, 1945 .
5 Sheets-Sheet 2
Oct 15, 1946.
' A. PERRI
‘
'
RE-YLASTING MACHINE
Filed Jan. 13, 19,45
_
7
2,409,447
‘
5, Sheets-Sheet 3
INVENTOR.
4M
2,409,447
Patented Oct. 15, 1946
UNITEDSTATES PATENT, OFFICE ,
RELASTING MACHINE
Angelo Perri, Groveland, Mass, assignor to Allied
Shoe Machinery Corn, Haverhill, Mass, a cor
poration of_ Massachusetts
Application January 13, 1945, Serial No. 572,620
11 Claims. (01. 12-15)
1
ing‘ member is removably, and yieldingly carried‘
This invention relates to mechanism for insert
ing lasts in shoes. More particularly it relates
on the plunger for forcing the strap over the
last as the plunger descends, the strap-engaging
member conveniently and effectively being sup
previously has been lasted and which has been
removed from the last on which it was lasted.
in ported between coacting springs of the plunger.
Frequently it is necessary or desirable to re
It is, moreover, my purpose and‘object gen
to a machine for inserting a last in a shoe which
erally to improve upon prior re-lasting machines
move from its last a shoe in process of manu
facture after its upper has been lasted andsub
and mechanisms.
.
.
‘
sequently to re-insert a last therein preparatory
In the accompanyingv drawings:
Figure 1 is a top plan view of a re-lasting"
to performing some later operation thereon, such 10
as applying the heel, for example. Although
machine embodying features of my invention;
conventional lasts have their fore and aft sec
Figure 2 ‘is an elevationof the upper part of v
tions hinged together ‘so that a last may be bro
the machine of Figure 1, looking in the direction
ken at its hinge to facilitate its insertion in and
of the arrows on line 2-—2 of Figure 1;
removal‘ from a shoe, it is difficult ‘to re-insert a 15
Figure 3 is a cross-sectional view of the lower
last in a previously lasted shoe because the last
part of the machine of Figure 1, online ‘3-3
ing operation necessarily conforms the shoe up
of Figure 1;
,
'
'
‘
'
per preciselyv to the last curvatures and, having
Figure 4 is a fragmentary elevation illustrate
removed the last, its re-insertion involves forcing . ing the plunger after it has descended into en
itrinto a cavity which, due to some resiliency 20 gagement with a shoe, and showingthe last ex
in the lasted ‘upper material, usually is smaller
tended and the shoe re-lasted;
‘
f
v ' »
than the last. ‘In any event the ?t is so tight
Figure 5 is a view similarto Figure 4 but with
that considerable force is required; to get a last
the last. elevated to reset the plunger;
Figure 6 is a fragmentaryelevation showing
back into a shoe subsequent to a removal of the
25 a strap type upper re-lasted with the aid of a
last upon which the shoe initially was formed.
depending strap-engaging member which is
It is an object of my present invention to pro
vide mechanism for quickly and effectively re
shown in’ dotted outline in Figure 2;
inserting a last in an alreadylasted shoe. I pro
Figure '7 is a rear face view of the shoe horn -'
vide a low cost treadle operated press in which ‘a
and its supporting levers; and
plunger is spring-actuated in response to depress 30 Figure 8 is a perspective of the belljcranklever _'
ing of a treadle to forcibly engage the rear por
tion of a lasted shoe- whose forepart has been
placed on a last while the latter is broken at its
hinge. ‘ The last is unyieldingly supported in the
for operating the latch releasing plate.
‘
Referring to the drawings, the embodiment of
my invention astherein represented,- has a base.
Hi from which rises the vertical hollow standard
past of the plunger, and the stroke of the plunger 35 l2. Carried at the upper end ofstandard I 2 is.
forces the rear portion of the shoe over the last
and simultaneously snaps the last to its extended
condition.
‘
‘
l
>
'
the horizontally disposed p1ate..l3' which con-v
veniently may have securedthereto in any suit-.
able manner the Work table sections 14.‘
>
Another object is to provide means for reset
ting the plunger againstthe resilience of its ac
tuating springs. According to the invention, de
‘
‘
A last supporting shaft 16 extends vertically
40 and slidably within standard 12 ‘and upward
through plate l3 to a substantial height above the '
work table, its upper end being reduced as at I8 .
pression of a treadle after a shoe has been re
lasted elevates the last with the shoe thereon to
force the plunger upward‘ until a latch‘ engages
and maintains the plunger in elevated set con-t
for engaging in the usual socket of a last. 20,
for mounting the last on the shaft l6. .The‘
lower end of shaft-IE is connected by link 22 to‘
dition ready for another re-lasting work stroke.
one end of a treadle lever 24 which is pivoted at
Afurther feature resides in the‘pr‘ovision of
26 intermediate its ends on bracket 28 suitably
secured on base Hi.
a shoe horn facilitating movementofthe rear
Standard l2 has an opening
portion of'a ‘shoe onto a last in response to a
30 in its wall through which the treadle lever
stroke of the plunger, and the shoe horn con 50 extends so that the forward pedal end '25 of the
veniently is withdrawn from the re-lasted shoe
lever is imposition ‘to be conveniently engaged
during the operation ‘of re-setting the plungerw
and depressed by the foot of an operator.
Still another object is to provide for re-lasting
Secured above and to the table I4 is the yoke
shoes having only ajstrap extending around the
indicated generally at 32 which has the lower
rear part of the upper.
A notched strap-engag
55
bearing portion‘ ‘34, through which the shaft‘ l5 ,
2,409,447
a
4
slidably extends, and the vertically aligned upper
bearing portion 36 wherein is slidably mounted
the plunger shaft 38 having the head 40 secured
actuating shaft 80 and the carried actuating arm
‘I8 will cause counter-clockwise movement of bell
to its lower end. Shaft 38 has a keyway 42
therein in which set screw 44 in bearing portion
36 engages, to prevent rotation of the shaft while
permitting vertical movements: thereof. Acollar
plate 64 to the left in Fig. 2. Upon a predeter
mined movement of plate 64 a pair of projecting
tively weaker coil spring 56 on shaft 33. engages
between the lower side of collar 46 and the
III), “.2 pivotally mounted on its top side as at
H4, H6, with a spring II8 urging the arms to
plunger head 46.
gether., However, aivertically projecting part I 26
crank ‘I0 with an accompanying movement of
pins I08 on latch '54 are engaged and the latch
swung to unlatched position, immediately upon
46 is slidably keyed on plunger shaft‘ 38 with a‘
which the springs 48, 56 snap the‘ plunger 36, 46
relatively heavy coil spring 48 on the shaft and
downward into forcible engagement with a shoe
engaging between the ?xed bearing portion 36 of 10, onlast 2!], as seen in Fig. 4.
yoke 32 and the upper side of collar 46. A rela
As herein shown, the plate 64 has a pair of arms
'
. of. thev plate intervenes between the arms adja
The upper end of plunger shaft 38 has adjust
cent their pivots and limits their movement
ably threaded thereon a ?nger nut 52 which may
toward each other so that they normally extend
be adjusted along the threaded- upper end of‘
in. spaced parallelism as seen in Fig. 1. When
plunger shaft 38 to vary the stroke of the plunger
the plate 64 moves to the left, as previously de
which normally is held elevated by the latch lever
54._ As represented,.the latch lever 54 is pivotally 20 scribed, it is the ends of‘ arms H6, H2 that en
gage the latch pins 566 and, after the plunger
suspend'ed'from a collar 56 which is in turn sus
pended'from the ?nger nut 52 by means of hook
has descended, the arms, on'the return‘ stroke of
plate 64, can yield to get past the part 56 on
elements58 loosely engaging in~ groove 60 of' the
shaft‘ 38 which will have dropped between them.
?nger nut. Collar 56 is slidably engaged around
shaft 38 and is held against'rotation thereon We 25 It should be understood, however, that the plate
6'4'itself maybe so' shaped that‘ it directly may
set screw 62‘ engaging in keyway‘ 42'of’the‘shaft.
engage and release the latch 54.
Fig. 2 shows latch 54' engaged with the bearing
The tight ?t of‘ a pre-lasted' shoe which is'to
portion 36 and acting as a strut‘ maintaining
be'relastedl requires‘ a shoe born to get the'rear
plunger 38, 46. in- elevated position against the
resiliency'of'both springs*48,,56. Whenthe latch : part of the shoe" on the last. I'provide a suitable
shoe horn I22 pivoted'at I24 at the upper ends
is disengaged, by“ means to be described, the
of a pair of links I26- whose lower ends are piv
plunger‘is snapped downward into forcible en
gagement' with a shoe‘ on last 26, as shown in
oted at I28 on the yoke 32.
The horn has a
counter-weight I30‘ thereon tending to swing the
The means for‘disengaging‘latch 54 comprises u bl horn clockwise aboutiits' pivot‘ I24 and, in con
junction with the weight of the horn and the
a forked plate 64 whose forked end rests on the
links I26; tending to rotate the links clockwise
top of bearing portion 36 of yoke 32, straddling
about'their pivot I28. A stop I32 on the-yoke
shaft 38,v and‘ whose other; end is pivotally-con
Fig. 4.,
.
32 constitutes an abutment against'which coun
nected at 66 to. the long arm’ 68' of bell crank
' ter-weight I36 engages upon gravitational clock
lever ‘I0 which is pivotally‘ mounted at "I2 on yoke
wise swinging thereof’ when the horn is‘ disenr
32. The shorter. arm ‘I4v of the bell crank‘ lever
gaged from a shoe; The horn is adapted for
has a pin 16‘ projecting'therefrom. at one" side,
manual‘ engagement in a shoebetween' the’ back
under which engages'the upper end of an actuat
of the shoe and‘the last‘ 20 preliminarily'to op
ing.arm.'IB which is carried on the actuating,r shaft
80. whose lower" end‘ is connected to a second ' eration of 'the-plunger'forforcing a shoe onto‘ the
last.
treadle'lever 82 pivotallymount‘ed' at a mid-loca
In the operation of" my improved Ice-lasting
tion alongit at‘ the pivot-26. The-forwardlypro
machine, the operator stands‘ at the front of‘ the
jecting-pedal part 83 of this treadle is elevated a
little above the pedal‘v 25 asshown in Fig. 3', and‘ _ machine as seen in‘ plan' in‘ Fig; 1, beside the
‘I " pedals 25, 83'. He or she, with‘ the right hand,‘
overlies‘ it a little‘
shown in’ Fig; 1.
places‘a last 20; broken at'it's' hinge and having
Referring to‘ Fig.‘ 2; it‘ will‘ be seen that the
actuating-arm 18" is indirectlysupported on actu
a‘ shoe on its forepart, on thereduced' upper end
ating shaft‘ 80' by being-pivotally mounted" at 84
I8‘ of'shaft I 6‘. With the left‘ hand‘, the shoe
liorn- I 22'may‘be‘ insertedin place; as'indicated'
on- one. of a spaced pair of‘links' 86, 88 which are
pivotally‘connected at 90, >92 to the headpiece ' ’~ in'F'i'g'. 2.‘ During'this' operation of- inserting a
last‘, the Plunger 38; 406‘ will be in‘ the elevated
94 on the upper end of‘ actuating: shaft’ 86. A
position of ‘Fig. 2, held up by the latch 54.
short link 96 ‘connects the upper ends of these
The operator next depresses pedal 85 which‘ele
links and has 'a lower edge‘ 98*for engaging from
vates actuating shaft 8|] ‘and actuating‘ arm‘ ‘I3
above- the pin 161 which projects between the
thereby rotating bell crank lever ‘I0 counter‘
spaced’ links 8638' and which‘ is engaged from
clockwise and’ sliding‘plate64‘ to the left‘ in'Fig; 2
below by the upper end of actuating‘arm 18' as
until “the arms H0, H2 engage the latch pins'16
previously- described. The pivoted lower end‘ of‘
thegactuating arm has a projecting foot I06 there
on‘; and; head: piece~64 has the chambered‘ boss
I02 for-seating one end'of'a coil'spring I64'whose
otherend' bears against foot" I00 tendingto rotate
and‘disengage thelatch, to cause downward snap‘
movement of plunger‘ 38; 40 by‘the-~springs“48',
' r50. The'forcible impingement of plunger head
40 against‘ the rear' part of‘ the shoe-forces it
down the shoev horn I22 and‘ snaps thelast to
actuating arm ‘I8, clockwise and thus‘ tending
extendediposition'. A further depression of ‘pedal?
to- maintain its upper‘ end, which has slightly- in
83 engages pedal 251so' that the» latter is de
clined curvature‘ as'at ‘I9, pressed against pin ‘I61
A setscrewrIOG permits“ adjustment of the ten Ti pressed'to elevate the last with the shoethereon
thereby to causewith'drawalbfitheshoe horn.
sion of’spring I64; This link construction‘ at the
upper endof‘ actuating shaft 80 provides flexibility
Duringthis- elevation of-‘th‘e lasti20, the inci
dental‘ further upward ‘travel’r of‘act'uating shaft
in its connection with pin ‘I6.
861 causes" the end: of ’ actuating’ arm‘: ‘I8’ to ride
It will be obvious-that, with the construction‘
shown and described; an upward‘ movement of I 011' the-pin ‘I6;- the’ arm swinginga‘littleicountere
2,409,447‘
6
clockwise against the resilience of spring‘ I04.
Hence, the plate?64 andltsarms ‘H0, H2 are
for a last,a plunger mounted ‘for movement be
tween an inactive position and a position in which
freed for return to‘ the-rightlin Fig. 2. Also, as
the last 2|] is elevated, the plunger 38, 40 is forced
upward against the ‘resilience of springs 48, 50
and the latch 54 ultimately drops by gravity into
latching engagement with upper bearing part 36
y.
it engages‘a shoe partially engaged over a last
on said support, means biasing the plunger to its
said shoe-engaging position, releasable means for
holding the plunger in its said inactive position
against the said bias, treadle-actuated means‘for
of the yoke 32, to re-set the device. for a similar
procedure on the next shoe.
"
When the pedal 83 is released, the shafts “I 6 and
releasing said holding means thereby to cause
forcible snap movement of the plunger to its said
80, with their ‘carried parts, drop by gravity back
to their positions of Fig. 2, the shoe horn I22
having meanwhile ‘dropped’by gravity to its dot
gagement of the shoe over the last, and means .
shoe-engaging position for completing the en;
for elevating said support for a last against the
said bias of the plunger to restore the plunger to
ted position of Fig. 2. The last with a shoe
thereon may then be removed and another in
serted to receive similar treatment. ‘
its said inactive position.
,
“
4. A re-lasting machine comprising a support
for a last, a plunger mounted for‘ movement be
‘
It is a feature of the invention that provision
tween an inactive position and a position in
which it engages a shoe partially engaged over a
is made for re-lasting shoes‘ of the open back
type which have only a strap part for engaging
last on said support, means biasing the plunger
to its said shoe-engaging position‘, releasable
means for holding the plunger in its‘said inactive
position against the saidbias, treadle-actuated
means for releasing said holding means thereby
around» the back of a foot. Such a shoe is repre- -
sent-ed on a last in Fig. 6, with its rear strap part
I34 engaged‘ over the shoe horn‘ I22. The get
ting of this‘strap part I34 to proper position on
a last in the re-lasting of a shoe presents a con
to cause forcible snap movement of the plunger
siderable problem. ‘According to my invention,
to its said shoe-engaging position for completing
the ‘engagement of the shoe over the last, and
a finger I36 may be removably'pivoted at I38
on the collar 46 which is between the two plunger
treadle-actuated means for elevating said sup
port for a last and the plunger engaging the shoe,
to restore the plunger to its said inactive position.
5. A re-lasting machine comprising a support
springs 48, 5D. ‘ When so mounted, it depends by
gravity and has a shoulder adapted to engage the
strap part'I34 to force the' strap over the shoe _
horn and the last ‘as the plunger 38, 40 snaps
for a last, a plunger mounted for movement be
downward on its working stroke. As the last is
tween an inactive position and a position in which
elevated for resetting the plunger, as previously
it engages a shoe partially engaged over a last on
described, the shoe horn iswithdrawn as in the
previously described case,‘ the ?nger I36 yield- '1
ing as may be necessary so as not to interfere
with movements of the parts.
It will be obvious from the foregoing descrip
tion that I have provided a relatively low cost
said support, means biasing the‘ plunger’to its
said shoe-engaging‘position, a latch movable by
tween an inactive position and a position in
which it engages a shoe partially engaged over a
last on said support, spring means biasing the
which it engages a shoe partially engaged over
a last on said support, means biasing the plunger
gravity into position to latch the plunger in its
said inactive position, a latch-actuating plate,
and means for moving said plate into releasing
engagement with said latch, thereby to cause
re-lasting machine which is extremely e?lcient 40 forcible snap movement of the plunger from its
and effective and which requires a minimum of
inactive to its shoe-engaging positionK for com
skill to operate.
pleting the engagement of the shoe over the last.
I claim as my invention:
6. A re-lasting machine comprising a support
1. A re-lasting machine comprising a support
for a last, a plunger mounted for movement be
for a last, a plunger mounted for movement be
tween an inactive position and a position in
to its said shoe-engaging position, releasable
plunger to its said shoe-engaging position, latch
means for holding the plunger in its said inactive
means for releasably holding the plunger in its 50 position against the said bias, a plate slidably
said inactive position, meansv for releasing said
mounted adjacent said holding means and mov
latch means thereby to cause a single forcible
able into releasing engagement with said hold
snap movement of the plunger to its said shoe
ing means, a pivoted lever operatively connected
engaging position for completing the engagement
to said plate, a treadle, and connections between
of the shoe over the last, and means for moving
said lever and said treadle whereby said hold
the last support in opposition to the said spring
ing means is releasable by depression of the
means biasing the plunger thereby to restore the
treadle for driving the shoe into completely en
plunger to its said inactive position.
gaged condition over the last.
7. In a re-lasting machine having a support for
2. A re-lasting machine comprising a support
a last and a plunger operable to and from a posi
tion where it engages a shoe partially engaged
over a last on said support for completing the
engagement of the shoe over the last, the com
bination therewith of a shoe horn insertible be
holding the plunger in its said inactive position 65 tween the rear part of a shoe and the last on
which the shoe is to be re-lasted for facilitat
against the said bias, treadle-actuated means for
releasing said holding means thereby to cause a
ing movement of the shoe onto the last in re
sponse to an operation of said plunger, means for
single forcible snap movement of the plunger to
for a last, a plunger mounted for movement be
tween an inactive position and a position in which
it engages a shoe partially engaged over a last
on said support, means biasing the plunger to its
said shoe-engaging position, releasable means for
its said shoe-engaging position for completing the
engagement of the shoe over the last, and trea
dle-actuated means for moving the last support
in opposition to the said plunger biasing means
for restoring the plunger to its said inactive po
sition.
_
3. A re-lasting machine comprising a support
".1
holding said shoe horn stationary in said in
serted position, and means for elevating the sup
port for a last following a re-lasting operation
of the plunger, thereby to effect withdrawal of
the shoe horn from the re-lasted shoe and to re
store the plunger for a subsequent re-lastin
operation thereof.
‘
2,409,441
8'. In a-~,re-lasting= machine having; a: support
for‘ a‘ last, and. a-plunger. biased toward: a: last. on
said support’ and; releasab‘ly" held ' in an inactive
position against said bias; the combinationthere
with of means. for releasing said. plungencom
prising a pin-carrying- lever pivoted on a: ?xed
support, a swingable arm having its free end en
ing; from‘ said, collarr'andswingable . by gravity,
into engagement with theback‘of; a‘ last‘ onsaid
support for a last, said-?nger. having a vshoulder
thereon for engaging; behind a- strap of a-shoe
upper, meansfor releasably holding the plunger
inv an inactive: position against the resilience. of
said springs, means forreleasing said holding
means thereby to cause a re-lasting- actuation of
gaged against the'pin of saidleVerLmeans‘. for
moving said swingable arm bodily thereby to
the plunger and a simultaneous yielding move.
rock said lever; means connected with said. lever 10 mentof. said ?nger to force said:strap of upper
whereby a said rocking, thereof releases said
over: the.- rear part of the last,- and means. for
plunger; , and-means whereby saidswingable arm
elevating the: support for. a. last initially com,
pressingthelighter spring- to release the ?nger
from strap-engagement and ult-imately'compress
arm.~
15 ing- thesstronger spring for restoringthe plunger
9. A re-lasting; machine comprising a-support
to its inactive; position.
11. A re-lasting-machine comprising-asupport
for a last, a plunger spring-biased in direction
for, a last,».a plungermovablebetween. an inactive
toward said support; meansfor. releasablyl main
position and-.av re-lasting position andbiased to
taining. said plunger in an. inactive position
against'the said spring bias, ashoe horn swing 20 ward the. latter position, a latch’ for maintain
ing the plunger inits- inactive position against
ably mounted on- a‘ ?xed- pivot and insertible in
the said-bias; a latch-releasing member, a treadle,
a shoewhich is to be rel-lasted, means forz-re
moves: out of: engagement with said: pin follow
ing a predetermined movement of, said swingable
and‘ connections between the treadle and. said
leasing said plunger for. a- springr'actuated- re
member whereby an initial. depression of . said
lasting.engagement-thereof with a shoe on arlast
mounted. on-said-support, and means for elevat 25 treadle releases. said latch thereby to causev are
ing,~said:support for restoring- the plunger to its
lasting actuation of the plunger, a second treadle
inactive» position and for simultaneously with
drawing the 'shoe- horn fromthe re-lasted shoe.
10'. A- re-lasting machine comprising. av support
in. the path, of movement‘ of the- ?rst. treadle
whereby’ thelsecondi treadle is: depressed by thev
?rst, treadle following a predetermined initial
for a last, a support for ‘a. plunger,‘ a- plunger 30 movement of the latter, and connections be
mounted for movement in the plunger support
indirections toward and from said'support for 'a
last; a' relatively‘ strong- coil. spring and a rela
tween the second treadleand the support for a
last whereby thesaid support isielevated by’ de
pression'of the second'treadle, thereby to restore
the plunger to its inactive position following a
tively weak coillspring: both urging said plunger
in‘ direction toward the: support for a, last, a 35 re-lasting: actuation thereof.
collar slidably mounted‘ on the ‘plunger between
the two said:springs; a ?nger ‘pivotally depend
ANGELO PERRI.
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