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Патент USA US3091796

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June 4, 1963
w. A. VORNBERGER
3,091,786
APPARATUS FOR LASTING POINTED TOE SHOES
Original Filed Oct. 21, 1960
3 Sheets-Sheet 1
M,”'
INVENTOR.
Walfar ?. Fbrzzégp’er
BY
W/YM
June 4, 1963
w. A. VORNBERGER
3,091,736
APPARATUS FOR LASTING POINTED TOE SHOES
Original Filed Oct. 21, 1960
5 Sheets-Sheet 2
,0; ‘J1
INVENTOR.
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hp
Walk’ JZVW/ZWBI'
A BY W/jMM
June 4, 1963
w. A. VORNBERGER
3,091,786
APPARATUS FOR LASTING POINTED TOE SHOES
Original Filed Oct. 21, 1960
3 Sheets-Sheet 3
INVENTOR.
l'l/klz‘er fl. I/W‘Mei' 02'
BY
United States Patent O?ice
1
,
h
ensues
2
In their retracted position the wipers have abutting edges
3,091,786
APPARATUS FQR LASTING PGINTED TOE SHOES
Waiter A. Vornberger, Medford, Mass, assignor to
Jacob S. Kamborian, West Newton, Mass.
'i
Patented June 4, 1963
_
Griginal application Oct. 21, 1960, Ser. No. 64,033. Dr
vided and this application Dec. 26, 1961-, Ser. No.
162,099
8 Claims. (Cl. 12_12.4)
forming a line of contact therebetween and divergent
edges extending forwardly of the forward end of the line
of contact. The center of curvature of the arcuate slots
in the wiper cams lies at a point that is forward of the
point where the divergent edges meet. Means are pro
vided to translate the plate toward the shoe and to con
comitantly swing the wiper cams about the center of‘
curvature of the slots thus causing the edges of the wipers,
This application is a division of copending application 10 forwardly of the center, to move toward each other and
Serial No. 64,033, ?led October 21, 1960.
hence to engage the lasting margin rearwardly of the
This invention relates to lasting the ends of shoes and
tip and the edges rearwardly thereof to move apart, there
more especially to an improved apparatus for lasting the
by leaving the margin at the tip unstressed. The bridging
toes of pointed toe shoes.
element is mounted on one of the wipers along the abut
In Patent No. 3,0>ll,l86, granted December 5, 1961, 15 ting edge and projects toward the abutting edge of the
in the names of Robert E. Dunlap and Jacob S. Kam
other wiper to wipe the lasting margin at the tip after
borian, there is shown a last positioned bottom side
having an upper and insole mounted thereon and toe
wiping means that includes a pair of toe wipers having di
wiped.
verging toe embracing surfaces that extend forwardly of
surfaces that are in abutting relationship when the wipers
with reference to the accompanying drawings wherein:
are in their retracted position. In this arrangement, the
wipers are caused to concomitantly move forwardly
toward the last and to swing toward each other about an
section, showing the parts for supporting and clamping
the shoe in the machine;
the lasting margin at the sides of the last have been
The invention will now be described in greater detail
FIG. 1 is a side elevation of the machine partly in
FIG. 2 is a plan view of the wipers and drive means
axis perpendicular to the plane of movement of the wipers 25 therefor with the wipers in retracted position;
and passing through the point Where the divergent sur
FIG. 3 is a plan view similar to FIG. 2, but showing
faces meet. Thus, when the wipers are moved forwardly
the wipers in their forward position in engagement with
to engage the upstanding lasting margin of the upper and
the shoe;
wipe the lasting margin down upon the insole, the toe
FIG. 4 is a bottom view of the wipers in their retracted
end of the last and the sides of the last, extending rear 30 position;
wardly of the toe, are engaged substantially simultane
FIG. 5 is a top plan view of the wipers in their forward
ously. While this has proved satisfactory in lasting most
position showing the manner in which the wipers engage
styles of shoes, it was found that when lasting pointed toe
the shoe; and
shoes the wiped down lasting margin became crowded at
FIG. 6 is a perspective view of the forward end of a
the toe end and that the simultaneous forces moving over 35 pointed toe shoe of the kind with which the method and
the bottom of the last, inwardly of the last at the toe end
apparatus herein disclosed is especially concerned.
of the last and along the sides of the last, caused the upper
The apparatus herein illustrated is concerned primarily
material to break at the pointed toe.
with wiping the upper at the toe of a shoe having a
The principal object of this invention is to' overcome
sharply pointed toe, as illustrated for example in FIG. 6,
the aforementioned disadvantages and this is accom 40 however it is to be understood that the apparatus .is useful
plished, according to the method herein disclosed, by
for any shoe making operation wherein dif?culties are en
?rst wiping the sides of the lasting margin extending rear
countered, because of the character of the upper material,
ward'ly of the tip and then wiping the lasting margin at
with crowding and hence excessive strain at t e toe which
the tip that was previously left unwiped. The mechanism
may result in cracking, breaking or other damage to the
for carrying out the method comprises a pair of wiper 45 upper.
plates having diverging wiping edges which collectively
form an opening ‘which, in shape, is substantially the
counterpart of the toe of the shoe, mounted for swinging
movement about a center which lies forwardly of the point
of intersection of their edges on a median line between
. In accordance with the method, in order to wipe the
upper over the sharply converging sides 124, 126 and tip
128 of a pointed toe last 122, such as shown in FIG. 6,
without excessive crowding of the margin and without
breaking the tip, the marginal edges 130 of the upper,
the edges and for translatory movement in unison along
along the sides 124, 126 rearwardly of the tip, are ?rst
said median line. As the edges of the wipers, forwardly
wiped
inwardly over the bottom and, following this, the
of the center, swing inwardly over the sides of the shoe,
end of the margin is wiped inwardly. The effect of such
they wipe the margins at the sides rearwardly of the tip
wiping is to bring the marginal edges at the sides to
into engagement with the bottom of the shoe. However, 55 gether, at the median line of the shoe, in substantially face
since‘ the edges of the wipers, rearwardly of the center,
to-face relation, forming thereby a narrow, relatively
move away from each other they leave the margin at the
straight rib r which extends rearwardly, the height of
tip unstressed. Accordingly, a bridging element is op
which is dependent upon the lasting allowance, without
erably associated with the wipers which is movable into
stretching of the margin at the tip and of there
a position opposite the end of the tip during swinging 60 substantial
after stretching the margin at the tip by shifting the rib
movement of the wipers to ?ll the gap between them and
rearwardly from the tip a small amount to pull the upper
hence to provide a wiping element movable forwardly
over the tip without increasing the bulk of the rib. Should
with the wipers as the latter are moved in translation to
the height of the rib be excessive due to an excessive al
wipe the margin at the up into engagement with the
it may, of course, be trimmed o? but will leave,
bottom. Translation of the wipers is effected by a plate 65 lowance,
‘as
before,
a relatively narrow rib disposed about medially
movable toward and away from the last and swinging
of the toe and rearwardly of the tip end.
movement by a pair of wiper cams slidably mounted on
The machine, by means of which the method may be
the plate, each wiper cam having an arcuate slot in which
carried
out, comprises a shoe support, wipers and driving
is located a pair’ of pins that are upstanding from the
means
for
wipers. The support ‘and wiper drive means
plate. A wiper is ?xed to each wiper cam and the wipers 70 correspondthe
substantially in form to that disclosed in the
are adapted to be moved forwardly across the insole to
above-mentioned Patent No. 3,011,186. The machine in
wipe the upstanding lasting margin down upon the insole.
cludes a frame 10v (FIG. 1). A carriage 12 is slidably
3,091,786
3
mounted on the frame for heightwise movement relative
to the frame. This is accomplished by heightwise move
ment of a sleeve 18, supported in a vertical position on
the frame 10 by brackets 24 and 26. The carriage is
fastened to the sleeve by brackets 14 and 16 and a pair
of collars 20 and 22 are rigidly connected to the sleeve
above and below the bracket 14 to provide for movement
of the carriage with the sleeve. A ?uid operated motor
28, having a piston rod 30 connected to the lower end of
in their retracted position (FIG. 4), the line of contact
terminating at its forward end at a point 106. Forwardly
of the point 106, the wipers have diverging edges 108 and
110 that are intended to embrace the toe portion of the
shoe and be spaced laterally of the shoe in the retracted
position of the wipers, the space between the edges 108
and 110 being substantially the counterpart of the toe of
the shoe.
The wiper 74 has an arcuate recess 112 in
its undersurface 101, which recess intersects the edge 102.
the sleeve, provides for effecting heightwise movement of 10 A disc 114 is located in the recess 112 and is secured to
the wiper '74 by spot welding or in any other appropriate
the sleeve 18 and hence the carriage 12. The sleeve 18
supports a toe post 32 upon which is mounted a toe
rest 34.
manner. The bottom of the disc is a ?at face 115 that
lies in the same plane as the undersurface 101 of the
wiper 74.
A toe clamp 36 for clamping a last 37 against the toe
The wiper>76 has a recess 116 in its undersurface inter
rest 34 is slidably mounted in the carriage 12 for move 15
secting the edge 104. The recess 116 is adapted to re
ment heightwise of the carriage by being connected to
ceive the disc 114 and therefore has a depth substan
a plate 38 which is slidably mounted in a guideway 40
tially equal, to the thickness of the disc and a curved edge
secured to the carriage 12. The plate 38 is connected to
118 complcmental to the curved periphery of the disc.
the piston rod 42 of a ?uid-actuated motor 44 mounted
on the carriage 12. Thus, actuation of the motor 44 to 20 The recess 116 has a length that is greater than the di—
ameter of the disc to facilitate assembling the wipers in
raise or lower the piston rod 42 causes a corresponding
the machine.
raising or lowering of the toe clamp 36.
The aforementioned cam slots 70 form segments of a
A heel clamp 46 engageable with the heel end of the
circle whose center of curvature is positioned forwardly
last is slidably mounted for horizontal movement at the
top of the carriage 12. The heel clamp, comprising a pair 25 of the point 186, de?ning the termination of the line of
contact between the wipers in their retracted position and
the point at which the diverging wiper edges 108 and 110
of divergent jaws 48 adapted to engage the heel end of
the last 37, is connected'through a post 50 to a bracket
52. The bracket 52 is connected to a piston rod 54 of a
?uid-actuated motor 56, so that actuation of the motor
56 to move the piston rod 54 causes a corresponding
movement of the heel clamp 46 towards or away from
the heel end of the last. A ?uid-actuated motor 58 is
mounted on the frame and drives a latch 60 into engage
ment with a toothed bar 62 on the heel clamp 46- to lock
meet. This center of curvature is designated by the let
ter c in FIGS. 2 and 3. The point c is spaced forwardly
of the point 106 an amount su?icient to allow the edges
102 and 104 to move apart
each other when the
wipers are moved forwardly over the shoe in the manner
described below. When the wipers move apart the disc
the heel clamp into clamped position.
ends of the edges 108 and 110 and the edge 117 of the
disc, thus exposed, provides a tip wiping element mov
The frame 10 includes a block 64 (FIGS. 2 and 3) upon
which is slidably mounted a plate 66. A pair of wiper
114 maintains a bridge across the gap between the rear
able into engagement with the margin at the tip following
movement of the edges 108 and 110 into engagement with
the sides, as will appear hereinafter.
cam slots 70 therein to receive pins 72 that are upstand
With the wipers in their retracted position as seen in
ing from the plate 66. A pair of wipers 74 and 76 are 40
FIG. 2, and the carriage 12 in an elevated position, the
rigidly attached to the wiper cams 68.
last with the upper and insole thereon is placed on the
A ?uid-actuated motor 78, mounted in the frame 10,
toe rest 34. The toe clamp 36 is lowered against the in
is connected to the plate 66 and the wiper cams 68 so
sole to clamp the last between it and the toe rest 34 and
as to concomitantly impart rectilinear translation of the
plate 66 with respect to the stationary block 64 and arcuate 45 the heel clamp 46 is brought into engagement with the
heel end of the last. The motor 28 is actuated to lower
movement of the wiper cams 68 with respect to the plate
the carriage 12 an amount sufficient to bring the upwardly
66 about the center of curvature of the slots 70. The
facing surface of the insole below the bottom surface
motor 78 has a‘piston rod 80 that is coupled to a block
of the wipers an amount substantially equal to the thick
82, the latter being slidable in ways 84 bounding the
edge of a slot 86 in the plate 66. Short links 88 are 50 ness of the lasting margin. At this time the lasting mar
gin 130 is upstanding from the sides 124 and 126 and
pivotally connected at one end to the block and at their
point 128 of the last (FIG. 1). Adhesive may now be
opposite ends to the levers 90. The levers 90 are pivot
applied into the angle formed 1by the lasting margin and
ally connected to the plate 66 intermediate the ends by
insole to bond the lasting margin to the insole during
pivots 92 and at the ends remote from the links 88 to
links 94. Each link 94, in turn, is pivotally connected 55 the subsequent wiping operation. Alternatively, the shoe
upper may be precemented with adhesive that becomes
to the block 64 at a ?xed point 96 in a slot 98 in the
effective under the pressure created during wiping. It is
block 64. The block 82 has links 100 pivotally connected
cams 68 are slidable over the plate 66 and have arcuate
also within the purview of the invention to use other con
thereto at one end. The links 100 are pivotally connected
ventional attaching means such as tacks or staples to se
at the ends remote from the block 82 to the cam plates 68.
It will thus be seen that movement of the piston rod 60 cure the wiped lasting margin to the insole.
The motor 78 is now actuated to move the block 82
80 toward the right (FIG. 3), causes a corresponding
toward the right (FIG. 2) and move the ‘wipers over the
movement of the block 82. Due to the connection at
last to wipe or fold the lasting margin down over the
pivot 92 between the plate 66 and the lever 90, move
ment of the block 82 toward the right causes a correspond
insole. As the wipers move over the shoe, upward pres
ing translation of the plate 66, but at a slower rate than 65 sure may be applied to the last through the motor 28 to
the block. Due to the links 100, movement of the block
82 toward the right causes the wiper cams 68 to swing
with respect to the plate 66 about an axis lying at the
center of curvature of the cam slots 70 with the pins 72
riding in the cam slots during the translation of the 70
plate 66.
.
The wipers 74, 76 (FIGS. 4 and 5) comprise a pair
of thin plates, preferably of steel, having ?at undersurfaces
101 and 103. The wipers have ?at edges 102 and 104 that
create pressure between the undersurfaces of the wipers
and the upwardly facing ‘surface of the insole during the
wiping operation. Movement of the block 82 toward the
right causes the block 66 to move in a corresponding
direction, but at a slower rate than the block 82 and the
wipers to swing over the Ihlock and have relative move
ment with respect thereto about the point 0, that is, the
center of curvature of the cam slots 70.
Since the point
0 is spaced forwardly of the point 106, the abutting edges
abut and form a straight line of contact between the wipers 75 102 and 104 of the wipers separate as the edges 108 and
3,091,786
5
110 of the wipers move over the sides 124 and 126 of
the last along lines that terminate short of the toe end
of the last, so that the portion of the lasting margin at
the point 128 of the last and extending for a short dis
tance along the sides 124 and 126 is unengaged by the
a bottom coextensive with the bottom of the wiper, and
the other wiper has a recess in its bottom surface adapted
to receive said projection.
4. A toe lasting apparatus comprising: a support for
supporting bottom side up a last having a shoe insole and
upper mounted thereon; a pair of wipers having flat under
wiper edges 1% and 116*. This is followed shortly by the
engagement of the lasting margin at the point of the last
surfaees mounted for movement across the insole to wipe
by the now exposed edge 117 of the disc 114 to wipe
the upstanding lasting margin of the upper down upon
the portion of the lasting margin that was not wiped by
the insole, said wipers having in their retracted position
the Wiper edges 108 and 110. The effect of applying
abutting surfaces forming a line of contact therebetween
wiping stresses to the sides is to draw the margins in
and diverging surfaces adapted to embrace the toe of the
wardly at the sides into substantially surface contact,
last extending forwardly of the forward end of said line of
forming a low ridge or rib substantially medially of the
contact; and means to cause the wipers to be move-d for
shoe and leaving the margin at the tip substantially un
wardly toward the last and to be swung inwardly over the
stressed. Now, when the margin at the tip is wiped 15 last about an axis that is forward of the forward end of
inwardly, there is su?icient stretch left in the upper mate
said line of contact to thereby wipe those portions of the
rial so that it can be pulled in over the tip simultaneously
lasting margin that lie rearwardly of the toe end of the
with a shifting of the rib previously formed rearwardly,
last.
so that the initial or original narrow rib does not increase
5. The apparatus of claim 4, wherein one of said wipers
in bulk. By having the lasting margin wiped thusly in 20 has a ?at projection whose undersurface is coextensive
two stages, the wiped-in lasting margin has a minimum
with the wiper undersurface, said projection extending
of bunching at the toe end where the maximum crowd
laterally from its abutting surface, and the other Wiper has
ing of the material takes place and a much ?ner quality
a recess in its abutting surface adapted to receive said
product results than if all of the lasting margin were
projection.
wiped in at the same time, with the likelihood of a break 25
6. A toe lasting apparatus comprising: a support for
in the upper material at the toe being substantially elimi
supporting bottom side up a last having a shoe insole and
nated. This is especially true in lasting pointed toe shoes
upper mounted thereon; a plate mounted for movement
where there is a great deal of crowding of the lasting
toward and away from the last; a pair of wiper cams
margin.
slidably mounted on the plate; a wiper ?xed to each cam,
After the completion of the wiping operation, the motor 30 said wipers being movable across the insole to wipe the
28 is actuated to lower the last, the motor 78 is actuated
upstanding lasting margin of the upper down upon the
to retract the wipers, the toe clamp 36 and heel clamp 46
insole, said wipers having in their retracted position
are disengaged from the shoe and the carriage 12 is raised
divergent surfaces adapted to embrace the toe of the last;
to its starting position. The lasted shoe may now be
an arcuate slot in each of said cams, said slots having a
removed from the machine.
35 common center of curvature positioned forwardly of the
Although it is preferred to wipe the lasting margin at
the point of the toe with the disc 114 after the sides
have been wiped by the edges 108 and 11%, the wiper
edges 108 and 111} may be set to engage the lasting mar
point where said divergent surfaces meet; a pair of pins
projecting upwardly from said plate into each of said slots;
and means for concomitantly translating said plate for
wardly and swinging the wiper cams forwardly about the
gin very close to the point of the last and thereby wipe 40 center of curvature of the slots to thereby wipe those por
substantially all of the lasting margin and the disc ‘114
tions of the lasting margin that lie rearwardly of the toe
may be eliminated. The spacing between the edges of
end of the last.
the wipers in this case is small, however, it leaves sul?
7. In a toe lasting machine: wipers having diverging
cient stretch in the margin at the tip, so that the latter
edges de?ning an opening which is generally the counter
can be pulled inwardly over the bottom by the translatory 45 part of the toe of a shoe; means supporting the Wipers for
movement of the wipers without the added bridging ele
swinging movement of their edges toward each other about
ment.
a center situated forwardly of the junction of the edges
It should be understood that the present disclosure is
for the purpose of illustration only and that this inven
tion includes all modi?cations and equivalents falling
on the median line between the edges; other means sup
porting the wipers for translation along said median line
following swinging movement; and power operated means
Within the scope of the appended claims.
for effecting operation of said ?rst and second means.
I claim:
'8. In a toe lasting machine: wipers having diverging
1. A toe lasting apparatus comprising: a support for
edges de?ning an opening which is generally the counter
supporting bottom side up a last having a shoe insole and
part of the toe of a shoe; means supporting the wipers for
upper mounted thereon; a pair of wipers mounted for 55 swinging movement of the edges toward each other about
movement across the insole to wipe the upstanding lasting
a center situated forwardly of the junction of the edges
margin of the upper down upon the insole, said wipers
on the median line between their edges and simultaneously
having in their retracted position diverging surfaces
separating the edges rearwardly of said center; other
adapted to embrace the toe of the last; and means to cause
means supporting the wipers for movement in translation
the wipers to ‘be moved forwardly towards the last and 60 along said median line; a bridging element associated with
to be swung inwardly over the last about an axis that is
the wipers movable by said separation of the rearward
forward of the point Where said diverging surfaces meet
edges of said wipers to ?ll the gap rearwardly of said
to thereby Wipe those side portions of the lasting margin
center;
and means for effecting movement of the support
that lie rearwardly of the toe end of the last.
2. The apparatus of claim 1, wherein one of said wipers 65 ing means for the wipers.
has a projection extending toward the other wiper adapted
to wipe the toe end of the lasting margin after the wiping
of the side portions.
3. The apparatus of claim 2, wherein the projection
comprises a flat plate in the first-mentioned wiper having 70
References Cited in the file of this patent
UNITED STATES PATENTS
2,221,864
Cummings ___________ __ Nov. 19, 1940
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