Note: Descriptions are shown in the official language in which they were submitted.
~036q~V
The present invention relates to an apparatus and
method for wiping a selected portion of the margin of an upper
against the corresponding portion of an insole.
In lasting operations by machines such as that dis-
closed in U.S. Pabents Nos. 3,320,626 and 3,631,554, it is the
practice to provide a shoe assembly formed of a last having an
upper mounted ~hereon and an insole accurately and immovably
located on the last bottom, usually by tacks. The shoe
assembly is mounted bottom-up on a support that is movable
I 10 heightwise in a particular direction and a hold down of the
I machine is located above the shoe assembly. The machine in;cor-
porates wiping means that are mounted for inward planar move-
i ment in a wiping stroke with respect to the shoe assembly in a
¦ particular plane that is substantially at right angles to said
particular direction from a retracted position to an advanced
, position, the bottom surface of the wiping means lying in a
wiping plane that is substantially parallel to said particular
plane.
In the operation of these machines, the wiping means
wipes a selected portion (disclosed as the heel portion) of the
margin of the upper against the corresponding portion of the
insole. Initially the support and the hold down are so retained
that the hold down bottom and the insole are spaced from each
other with said insole portion substantially lying in a plane
that is parallel to and offset from the wiping plane. Then
such relative heightwise movement is imparted in said partic-
ular direction between the hold down and the support as to cause
the hold down to engage the insole to thereby clamp the shoe
assembly between the support and the hold down and to bring
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said insole po~tion substantially into said wiping plane. After
this, a wiping stroke is imparted to the wiping means to thereby
cause the wiping means to wipe said margin portion against said
insole portion.
In order to avoid the expense of tacking the insoles
to the last bottoms and then removing the tacks and to avoid the
damage to the last bottoms caused by the tacks, there has been
provided lasts having prongs upstanding from their bottoms onto
which the insoles are impaled by pressure applying mechanisms.
Examples o~ such an arragement are illustrated in Patents Nos.
3744074, 3772721 and 3833958.
According to the present invention there is provided
¦ an apparatus having a support mounted for heightwise movement in
a particular direction~ A shoe assembly, formed of a last having
an upper mounted thereon and the insole located on its bottom
with the upper margin portion extending upwardly of the periphery
of the insole portion can be supported bottom-up on the support.
Wiping means is mounted for inward planar movement in a wiping
stroke with respect to the shoe assembly in a particular plane
that is substantially at right angles to the particular direction
from a retracted position to an advanced position. The bottom
surface of the wiping means lies in a wiping plane that is
substantially parallel to the particular plane, and a hold down
is located above the shoe assembly. At least one prong is
mounted to the last and extends upwardly of the last bottom beneath
the insole, the prong being in register with the hold down along
the particular direction. Retaining means initially retain the
support and the hold down so that the hold down bottom and the
insole are spaced from each other with the insole portion su~-
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stantially lying in a plane that is parallel to and offset to, theparticular direction from the wiping plane~ Moving means are
provided for thereafter imparting the relative heightwise move-
ment between the support and the hold down in the particular
direction so as to cause the hold down to engage the insole and
press the insole against the prong to there~y restrain the insole
against movement on the last bottom and clamp the shoe assembly
between the support and the hold down and to bring the insole
por~ion substantially into the wiping~plane. Means are also
provided for thereafter imparting the wiping stroke to the wiping
means to thereby wipe the margin portion against the insole portion.
According to one embodiment of the invention the retain-
ing means retains the hold`down bottom substantially in the wiping
¦ plane, and the moving means so raises the support as to bring the
! insole into engagement with the hold down bottom.~`
The present invention also relates to a method of
wiping a selected portion of the margin of an upper against the
corresponding portion of an insole and includes the steps of
providing a support mounted for a heightwise movement in a partic-
ular direction and supporting bottom-up on the support a shoe
assembly formed of a last having the upper mounted thereon and the
insole located on its bottom with the upper margin p0rtion extend-
ing upwardly of the periphery of the insole portion. The method
further includes the steps of providing wipin~ means mounted
for inward planar movement in a wiping stroke with respect to the
shoe assembly in a particular plane that is substantially at
right angles to the particular direction from a retracted poctition
to an advanced, the bottom surface of the wiping means lying in
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103676~
a wiping plane that is substantially parallel to the partic-
ular plane. A hold down is provided that is located above the
shoe assembly, and at least one prong is provided that is mounted
to the last and extènds upwardly of the last bottom beneath
the insole, the prong being in registry with the hold-down
along the particular direction. In the method, the support and
the hold down are initially so retained that the hold down bottom
and the insole are spaced ~rom each other with the insole portions
substantially lying in a plane that is parallel to an offset in
the particular direction from the wiping plane. Thereafter such
relative heightwise movemen~ is imparted between the support and
the hold `down in the pa~ticular direction as to cause the hold down
to engage the insole and"pxe~ t~e insole against the prong to thère~y re-
strain the ~ole ayain~t movement Ofthe last bottom and clamp the shoe
assembly between the support and the hold down and to bring the
insole portion substantially into the wiping plane. The wiping
stroke is thereafter imparted to the wiping means to thereby wipe
the margin portion against the insole portion.
It may be seen that in this invention, a last having
at least one prong upstanding from its bottom may bè utilized in
machines of the type shown in U.S.Patents Nos. 3320626 and
3631554 to thus avoid tacking the insole to the last bottom and
then removing the tacks without using a separate pressure applying
mechanism to impale the insole on the las~t bottom. This i9 accom-
plished by so supporting the shoe assembly on the support that the
prong is in registry with the hold down along said particular
diroction. Therefore, the relative heightwise movement between
the hold down and the support that enables the shoe assembly to
be clamped between the hold down and the support also causes
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the hold down to engage the insole and press the insole against
the prong to thereby restrain the insole against movement on
the last bottom.
BRIEF DBSCRIPTION OF THB DR~WINGS
Figure 1 is an isometric view of a last having prongs
projecting from its bottom;
Figure 2 is a section taken along the line 2-2 of
Figure l;
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Figure 3 is a view taken along the line 3-3 of Figure 2;
Figure 4 is a view of the last supported on a support, the last having
'an upper ~lounted thereon;
'¦ Figure 4A is a view taken along the liné 4A-4A of Figure 4;
~ Figure 5 is a v~ew similar to Figure 4, but showing an insole on the last'¦bottom and a toe hold down bearing against~the toe portion of the insole;
Figure 5A is a view taken along the line 5A-5A of Figure 5;
il Figure 6 is a partially sectional elevation of an applicat~-hold down
~`unit;
, Figure 7 is a view of a shoe assembly in the machine showing the hold
~down pressing the insole against the prongs;
n Figure 7A is a view taken along the line 7A-7A of Figure 7; and I `
'I Figure 7B is a section tàken ~along the linè 7B-7B of Figure 7.
DESCRIPTION OF THE PREFERRED EMBODIMEN~ ¦
Figure 1 shows a last 10 having a plug 12 embedded in the heel seat portio
" of its bottom 14 along its longitudinal center line. The bottom of the plug
'`~12 is mounted substantially coextensive with the bottom of the surrounding
~ area of the last bottom 14. Referring to Figures 2 and 3, a pair of spaced
!' prongs 16 extend aw~y from bottom of the plug 12 and the last bottom 14. The .
prongs 16 are substantially rectangular in cross-section and extend along
parallel longitudinll axes that are substantially parallel to the longitudinal !center line of the last 10. The last 10 serves as part of work that is acted I -
on by a heel lasting machine of the general b Pe shown in Patent No. 3,320,626 !~n which is modified as set forth below. Reference is made to this patent and to ~
'~ other patents set forth below for a disclosure of the mechanisms for operating ¦
',`the machine parts.
The machine includes a work support which has been modified to take the
,I form shown in Patent No.3,484,880. Referring to Figure 4, a plate 20 and a
iilast pin 22 are mounted to the top of a column lR with the last pin 22 extending
¦. upwardly of the plate 20. A toe rest 24 is located forwardly ol the column 18.¦
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An upper 26 is so mounted on the last 10 that the margin of the upper extends
away from the last bottom 14. The last-upper assembly is placed bottom-up in
the plate 20 with the last pin 22 entering the conventionial last pin hole in
the last. The toe portion of the last-upper assembly is supported on the toe
rest 24. The plate 20 and the toe rest 24 thus serve as the work support.
Referring to Figures 4 and 4A, the forepart portions of~the upper margin
are now inserted between the jaws of pincers 28 and the pincers jaws are caused
to close and grip the forepart portions of the upper .nargin. This is followed,by means of mechanism shown in Patent No. 3,484,880, by a concomitant forward
and upward movement of the pincers 28 to cause the upper 26 to be stretched
tightly about the last 10 with the quarter of the upper extending tightly
about the heel of the last and the upper margin extend;ng upwardly c- the làst
bottom. The upper margin thus forms a fence exten~ing upwardly of the peripheryof the heel portion of the last 10.
Referring to Figures 5 and 5A, the operator now places an insole 30 on the
last bottom 14, the fence formed by .he quarter of the upper extending upwardly
of the last bottom acting as a suide in placing the insole evenly on the last
bottom. At this time the heel portion of the insole 30 is bowed about the
prongs 16 as indicated in Figure 5. After this, by mechanism shown in Patent
No. 3,484,880, a toe hold down 32 is brought to bear against the toe portion:
of the insole 30 to thereby hold the shoe assembly comprised of the last 10, theupper 26 and the insole 30 between the toe hold down 32 and the toe rest 24
and thus enable the.operator to stop holding the shoe assembly. The bearing
of the toe hold down 32 against the insole 30 inhibits the shifting of the
insole on the last bottom 14.
The machine of Patent 3,320,626 has been modified so as to substitue the
heel hold down, heel clamping mechanism and heel wiping mechanism shown in
Patent No 3,609,785 for the heel hold-down,heel clamping mechanism and heël
wiping mechanism shown in Patent 3,32~,626.
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0367~ 1
" In addition, the instant machine incorporates a cement applying mechanism
; of the type shown in Patent No. 3,609,785.
il Referring to Figure 6, which illustrates the heel hold-down and the cement
applying mechanism,the heel hold down 36 is secured to the bottom of a spindle I34. The cement applying mechanism includes a h-~b 38 that is rotatably mounted
ilto the spindle 34 and that has a radially extending nozzle 40 in its bottom.
i~The mechan;sm show~ in Figure 6 forms an applicator-hold down unit 42.
~I The heel clamping mechanlsm comprises a U-shaped heel clamping pad 44 and
~the heel wiplng mechanism comprises heel wipers 46 which are mounted for
for~ard-rearward planar mo~ement and for inward-outward planar movement about
Ij a vertex 48 in a particul àr plane.
`,~ Although the plane in which the wipers 46 lie and ;n which they move is
' inclined from the vertical, for ease of explanation they will be considered to !
¦~ be hori~Ontal~ The lonitudinal ax;s of the column 18 is at right angles to
1' the plane in which the wipers 46 lie and in which they move. For ease of
'`¦ explanation, this ax;s will b2 considered to be vertical.
In the manner shown in Patent No.3,484,880, the applicator-hold down unit j .
,~ 42 is moved from an initial rearward position to a forward position such that.~ the hold down 36 is positioned directly above the heel portion of the insole
' 30 in vertical registry with the prongs 16 and the bottom of the hold down 36
is slightly below the wiping plane formed by the bottom surfaces of the heel
, wipers 46. This is followed by the vertical raising of the work support, com-
prised of the plate 20 and the toe rest 24, and of the toe hold-down 3~2 under
~ the yieldable force of an air operated motor to thereby raise the shoe assembly
`' until the insole heel seat portion is brought into engagement with the bottoml of the heel hold down 36. This engagement causes the hold down to press the
insole 30 against the prongs 16 and the last bottom 14, as indicated in Figure
7B, so as to cause the prongs to partially penetrate the insole. As a result,
,'~ the shoe assembly is clamped between the plate 20 and the heel down 36 and
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..the heel seat portion of the insole is restrained against Movement by the prongs
16. The parallel longitudinal axes of the prongs 16 extend in forward-rear-
ward directions at this time to thereby inhibit sidewise twisting of the heel
~,end of the insole with respect to the last which would be undersirable in the
`;below described heel wiping operation. The location of the heel hold down
~,36 is such that, when the shoe assembly has completed its rise, the upwardly
`~facing bottom of the hèel seat portion of the ~ 30 lies in a plane
,parallel to and slightly lower than the wiping plane formed by the bottoms of
the heel wipers 46, which is desirable for the below described heel wiping ..
;operation.
~' Now, with the mechanism shown in Patent ~o. 3,4 ~ 779, the heel clamping ¦.
pad 44 is caused to firmly engage the shoe assembly and clamp the heel portion
~`of the upper 26 against the last 10, as shown in Figures 7 and 7A, with the
'heel portion of the upper margin extending upwardly of the heel seat portion ¦
~of the insole 30. This is followed by a swinging of the hub 38, while cement
ids extruded through the noz~le 40, to thereby deposit cement on the margin
~of the heel portion of the upper 26 and/or the periphery of the heel portion of I
~he insole 30 (see Figure 7A). After this, the heel wipers 40 are moved
forwardly from their Figures 7 and 7A position and inwardly about the vertex 48
.in a heel wiping stroke so as to wipe the heel portion of the upper margin
~against the heel portion of thè insole periphery and bond the upper margin
'to the insole by means of the cement. During the heel wiping operation, the
,applicator-hold down unit 42 is raised out of the way of the heel wipers 46,
~and, at the end of the heel wiping stroke, the air operated motor associated f
with the work support moves the co~umn 18 upwardly under heavier pressure than
~had previously been applied to thereby apply bedding pressure between the wiped~upper margin and the bottoms of the heel wipers 46. After the bedding pressure~has been applied for a predetermined length of time, the machine cycle is
completed, the machine parts are returned to their idle positions, and the shoe I
'assembly is released. f
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I The insole 30 is securely anchored to the rest of the shoe assembly at
l! the completion of the heel lasting operation by means of the cementatious
connection between the wiped hee1 portion of the upper margin and the insole.
,I There follows a recapitulation of the machine construction and operation j
ilas they relate to this invention. I
,I The machine includes a support formed of the plate 20 and the toe rest 24 j
~; that is mounted for heightwise movement in a particular direction in the
` manner shown in Patent No. 3,320,626. The shoe assembly, formed of the last
lO having the upper 26 mounted theneon and the insole 30 located on ~ts bottom ¦~1! with a particular portion (the heel portion) of the upper margin extending
P upwardly of the corresponding portion of the insole, is supported bottom-up on !
I~ the support. Wiping means constituted by thè heel wipers 46 are ~lounted foru inward planar movement in a wiping stroke with respect to the shoe assembly, in
'~ the manner shown in Patent No. 3,609,7~5, in a particular plane that is sub-
' stantially at right angles to said particular direction from a retracted position
to an advanced position with the bottom surface of the wiping means lying in a
wiping plane, as shown in Figure 7, that is substantially parallel to said
,' particular plane. The hold down 36 is located above the shoe assembly. At
. lease one prong 16 is mounted to the last 10 so as to extend upwardly of the
last bottom 14 beneath the insole 30, as shown in Figure 5, the prong being
in registry with tne hold down along said particular direction.
~, In a machine cxcle, the retaining means disclosed in Patent No. 3,320,626
li initially so retain the support and the hold down that the bottom of the holdi' down and the insole are spaced from each other with said insole portion
substantially lying in a plane that is parallel to and offset in said particulaF~¦ direction from said wiping plane. In the illustrative embodiment of the inven-
~i tion, the retaining means retains the hold do~m bottom substantially in said
wiplng plane. Thereafter, the moving means disclosed in Patent No. 3,320,626
imparts such relative he1ghtwise movement between the support and the hold downl `
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~ in said particular direction ( a rising movement of the support in the illustr-
.~ ative embodilnent of the invention) as to cause the hold down 36 to èngage the
insole 30 and press the insole dgainst thè prong 16 to thereby restrain the
insole against mo\tement on the last bottol~ 14 and claï:~p the shoe assembly be-
~ ~,
tween the support and the hold down and to bring said insole portion (disclosed
~; as the heel portion) substantially into said wiping plane. Thereafter, by
the mechanism shown in Patent No. 3,609,785, a wiping stroke is imparted to the
~,~ wiping means to thereby wipe said margin portion against said insole portion.
P Although the illustrative embodiment of the invention discloses a heel
~ wiping operation, the in\~ention has utility ;n wiping other portions of the
~ shoe assembly as, for example, in wiping the toe portion of the upper margin
.~ against the corresponding portion of the insole. I
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