Note: Descriptions are shown in the official language in which they were submitted.
lO`i'~ 9
This is an improvement on cement lasting machines of the
type shown in U.S. Patent No. 3,963,840 issued June 15, 1976.
This is a division of copending Canadian Patent Appli-
cation Serial No. 29~,398, filed January 5, 1978.
The prior art machine is operable on a shoe assembly
formed of a last having an insole located on its bottom and an
upper mounted thereon with the toe portion of the upper margin
being wiped against and secured to the lnsole and unwiped portions
of the upper margin extending heelwardly of the wiped toe portion
of the upper margin. The machine applies cement in the corners
between the unwiped margin portions and the corresponding
portions of the insole periphery. The machine includes a shoe
assembly support for supporting the shoe assembly bottom-up with
the toe end of the shoe assembly facing forwardly. A pair of
nozzles, located above the shoe assembly, are mounted for forward-
rearward movement, for heightwise movement, and for inward-
outward movement. In order to apply cement into the corners
heelwardly from the boundaries between the wiped and unwiped
margin portions, the nozzles are caused to move forwardly while
they are in upper and inner positions until an engaging member,
that is mounted for forward-rearward movement with the nozzles~
int0rsects a stop member. The stop member is so located as to
stop the forward movement of the nozzles when the nozzles are
over the widest part of the shoe assembly bottom heelwardly of
said boundaries. After the stop member stops forward movement
of the nozzles, the nozzles are lowered and moved outwardly into
the corners heelwardly of said boundaries. The stop member is
then moved out of intersecting relationship with the engaging
member so that the nozzles can again resume their forward movement
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so as to bring the nozzles to said boundaries. When the
nozzles have arrived at said boundaries, they are caused to
move rearwardly while being maintained-in said corners and
cement is extruded from the nozzles into the corners during
this rearward movement. In order to properly stop the first
mentioned forward movement of the nozzles in the appropriate
position for the particular length of shoe being operated on,
the forward-heelward location of the stop member is manually
adjusted.
According to the present invention there is provided a
machine which is operable on a shoe assembly formed of a last
having an insole located on its bottom and an upper mounted
thereon with the toe portion of the upper margin being wiped
against and secured to the insole with unwiped portlons of the
upper margin extending heelwardly of the wiped upper margin
portion, the machine being adapted to apply cement in the corners
- between the unwiped margin portions and the corresponding portions
of the insole periphery. The machine has a shoe assembly
support for supporting the shoe assembly bottom-up with the toe
end of the shoe assembly facing forwardly, a pair of nozzles
which are located above the shoe assembly and are mounted for
forward-rearward movement, for heightwise movement and for
inward-outward movement, and a housing. The machine has a stop
member which is mounted to the housing and is located in a
particular location, and also an engaging member which is mounted
for forward-rearward movement in unison with the nozzles and is
located rearwardly of the stop member in intersecting relation-
ship with the stop member. Means is provided for initially
retaining the nozzles in rearward, upper and inner positions, and
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there are means for thereafter moving the nozzles, together
with the engaging member, forwardly until the engaging member
intersects the stop member. The machine has means thereafter
effecting lowering and outward movement of the nozzles to move
the nozzles into the corner heelwardly of the boundaries between
the wiped and unwiped upper margin portions. Means are provided
for thereafter removing the stop member from the particular
location to enable the nozzles to resume their forward movement
so as to bring the nozzles to the boundaries. The machine has
means operative when the nozzles have arrived at the boundaries
to effect rearward movement of the nozzles while maintaining the
nozzles in the corner and means for extruding cement from the
nozzles into the corners during the rearward movement of the
nozzles. In the present invention, the stop member is mounted
to the housing for forward movement from a rearward stop member
position that is determinative of the particular location to a
forward stop member position that is in intersecting relationship
with the engaging member. The means for removing the stop member
from the particular location includes means for moving the stop
member from the rearward stop member position to the forward stop
member position. The intersection of the engaging member with
the stop member during the resumption of the forward movement of
the nozzles when the stop member is in the forward stop member
position is determinative of the arrival of the nozzles at the
boundaries.
Thus, there is provided an improved arrangement for moving
the stop member out of intersecting relationship with the en-
gaging member after the engaging member has intersected the stop
member to stop the first mentioned forward movement of the
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nozzles and for stopping the resumed forward movement of the
nozzles when the nozzles have arrived at said boundaries~ It
may be seen that this is accomplished by mounting the stop
member to a housing for forward movement from a rearward stop
member position which is the position the stop member assumes
when the engaging member engages the stop member to stop the
first mentioned forward movement of the nozzles and a forward
stop member position that is in intersecting relationship with
the engaging member. After the stop member, in its rearward
stop member position, has been engaged by the engaging member
to stop the forward movement of the nozzles and the nozzles have
been moved into said corners, the stop member is moved to its
forward stop member position to permit resumption of the forward
movement of the nozzles until the engaging member again inter- :
sects the stop member, the parts being so related that the
second intersection of the engaging member with the stop member
takes place when the nozzles have arrived at said boundaries.
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BRIEF DESCRIPTION OF THE DRAWIN~S
Figure 1 is a front elevation of the machine;
Figures 2 and 3 are side elev~tions of the machine respectively taken
along the lines ~-2 and 3-3 of Figure l;
F~gure 4 is a partially sectional view of a mounting o~ the shoe asse~b~y
support;
Figures 5 and 6 are views respectively taken alon the lines 5-5 and 6-b
of Figure 4; ..
Figure 7 is a par~ially sectional elevation of a toe rest-detector member
.~ ~o assembly and the mounting therefor;
Figure 8 is an eleva~ion of-the toe rest-detector mem~er assembly;
Figure 9 is a view taken along the line 9-9.o~ Figure 8;
Figure 10 is an elevation of a side lastin~ unit;
Figure 11 is a view taken along the line ll-ll of Figure 10;
Figure 12 is a view taken along the line 12-lZ of Figure 11;
Figure 13 is an isometric view of a side.lasting instrumentality that ls a
part of the side lasting unit;
Figure 14 ~s a side elevation of a portion of the machine showing fnstru-
mentalities operating on the heel portion of the shoe assembly and the; cement
applying no~zles;
Figure 15 is a view taken along the line 15-15 of Figure 14;
Figure 16 is a side elevation showing instrumentalities operating on the
,
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. heel p~rtion of the shoe assembly and drive mechanisms therefor;
Figure 17 is a view tak.en along the line 17-17 of Figure 16i
Figure 18 is an elevation of a cement pumping mechanism;
Figure 19 is a section of part of the cement pumping mechanism;
Figure.20 is a side elevation of a nozzle raising and lowering mechanism;
Figures 21 and 22 are respectively v;ews taken along the lines 21-21 and
22-22 of Figure 20;
Figure 23 is a side elevation of a portion of the machine that inc.ludes
the extrusion rate control means;
o Figures 24 and 25 are respectively views taken along the lines 24-24 and
25-25 of Figure 23;
Figure 26 is a side elevation of a portion of the machine that includes
the stop member and the mounting therefor;
Figures 27 and 28 are respectively views taken along the lines 27-27 and -
28-28 of Figure 26;
~ Figur-e 29 is a view of a braking mechanism that is cooperative with the
stop member to lock it, together with the detector member, in a forward-rean~ardposition.
Figure 30 is a section of the stop member; -
Figure 31 is an isometric view showing linkage connecting the stop member
and the detector member;
Figure 32 is an isometric view of the connection of the side wiping means
to the slide plate;
Figure 33 is a side view of the shoe assembly as it appears in the machine
at the beginning of a machine cycle;
Figure 33A is a view taken along the line 33A-33A of Figure 33;
Figure 34 is a plan view of the shoe assembly as it appears in the machine
after the side and heel portions of the upper have been clamped to the last; .
Figure 34A is a section taken along the line 34A-34A of Figure 34; and
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Fi~ure 35 is a view showing the nozzles as they appear when applying
cement to the shoe assembly.
DESCRIPTION OF THE PREFERRED EM~ODIME~T
The operator is intended to stand in front of the machine as seen in
Figure 1, to the left of the machine as seen in Figure 2, and to the right of
the machine as seen in Figure 3. Directions extending toward the operator-will
be designated as "forward" and directions extending away from the operator will
be designated as "rearward". The front of the machine is closest to the oper-
ator and the back of the machine is furthermost from the operator.
~0 Referring to Figures 4-6, the machine includes a sleeve 10 that is mounted
to a bracket 12. A bar 14 is mounted in the sleeve 10 for he;ghtwise movement.-An air operated motor 16, that is secured to the bracket 12, has an upwardly
extending piston rod 18 that is secured to the bottom of the bar 14, whereby
the motor 16 can effect heightwise movement of the bar 14. A last pin 20 and a
support plate 22 are secured to the top of the bar 14. A flange 24 is a~fixed
to the front of the bar 14 by means of screws 26 that connect the flange 24 and
the bar 14 and that extend through slots 27 ;n the sleeve 10; A strut 28 is
secured to and extends forwardly of the flange 24.
Referring to Figures 7-9, a housing 30 is slideably mounted to the strut
28 for forward-rearward movement. An air operated motor 32, mounted to the
flange 24, has a forwardly directed piston rod 34 that is connected to the
housing 30. A column 36, extending upwardly of the housing 30, has an air
operated motor 38 formed therein. The motor 38 has an upwardly directed piston
rod 40 that is secured to a bracket 42. A toe rest 44 is secured to and` extends
upwardly of the bracket 42. An air operated motor 46, formed in the brac~et 42,has an upwardly directed piston rod 48 and a clevis 50 is secured to the top of
the piston rod 48. An arm 52 is pivoted to the clevis 50 by a pin 54 for
swinging movement about the horizontal axis of the pin 54 in a vertical plane
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that lies at right angles to the transYerse axis of the pin 54. A detector
member or finger 56 is so`mounted to the arm 52 as to extend upwardly~of the
back of the arm 52 forwardly of the toe rest 44. A compression spring 58,
interposed between the fronts of the clevis 50 and t~e arm 52,yieldably urges
the arm 52 clockwise (figure 8) about the axis of the pin 54 to thereby yield-
ably urge the finger 56 rearwardly about this axis to a position ~Jherein the
bottom of the back of the arm 52 abu~s the clevis 50. A valve 60, mounted to
the front of the bracket 42, has an upwardly directed valve spool 62 that is
resiliently urged upwardly by a conventional spring in the valve 60 into
engagement with the front of the arm 52.
The last pin 20, the support plate 22 and the toe rest 44 const;tute a
shoe assembly support 63 (Figure 1).
Duplicate side lasting units 64 (Figures 1-3) are located on opposite
sides of the shoe assembly support 63. Referring to Figures 2, 3 and 10-12,
: each side lasting unit 64 includes a table 66 that is mounted to the machine
frame on opposite sides of the shoe assembly support 63. An air actuated
motor 68, mounted to each table 66, has a piston rod 70 t'nat is mounted to a
frame 72. Each frame 72 is mounted to its associated table 66 for inward-
outward movement by the frames 72 being slideably mounted on rods 74 that are
20 secured to the tables 66. A sled 80 is mounted to each frame 72 for forward-rearward movement by the sleds 80 being slideably mounted on rods 82 that are
secured to the frames 72.
In the manner shown in U.S. Patent No. 3,962,741, a base 84 is adjustably
mounted to each sled 80. A side lasting instrumentality 86 of the type shown
in U.S. Patent No. 3,962,741 is mounted to each base 84 (see Figure 13).
Referring to Figures 2, 3 and 14-17, a head 88 is located rear~lardly of
$he last pin 20 and the lasting units 64. A main slide plate 90 is slideably
mounted in the head 88 for forward-rearward movement in the manner shown in
U.S. Patent No. 3,963,~40. A fluid actuated motor 92, mounted to the head ~8,
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has a piston rod 94 connected to a bracket 96 mounted to the main slide plate
90 to effect forward-rearward movement of the main slide plate 90. In the man
ner shown in U.S. Patent No. 3,963,840, a forwardly facing heel clamp 98 and
forwardly facing heel wipers 100 are movably mounted to the main slide plate 90
w;th the heel ~"ipers 100 being located above the heel clamp 98. A hold-down
102 is movably mounted to a cover 104 of the main slide plate 90 for forward-
rearward movement and for heightw;se movement in the manner shown in U.S Patent
No . 3,963,840.
Referring to F;gures 1-3, 14 and 15,a pair of front posts 106 and 108 and
o a pair of back posts 110 and 112 are upstanding from the head 88. The two
front posts and the two back posts are located on opposite sides of the head 88
and a slide rod 114 extends between the posts 106 and 110 and between the posts
108 and llZ so as to be located on opposite sides of the head 88 and so as to
extend in forward-rearward directions. A bearing block 116 is slideably
mounted on one of the rods ll4 and a bearing block 118 is slideably mounted on
the other of the rods 114. A plate l20 extends between the slide rods 114 and
is secured to the bearing blocks 116, 118, the plate 120 thus being mounted ~OE~forward-rearward movement. A lug 122, that is upstanding from a bracket 124
secured to the head 88, has an ~ir operated motor 126 pivoted thereto. The
0~0 motor 126 has a forwardly directed piston rod 128 that is mounted to a prong130 depending from the front of the plate 120, whereb~ the motor 126 effects
forward-rearward movement of the plate 120 and the parts, described below,
mounted thereto.
Referring to Figures 18 and l9, a cement pumping mechanism 132 is mounted
to the slide plate 120 for forward-rearward movement therewith. The mechanism
132 includes a funnel 134 into which solid granules of thermoplastic cement is
supplied and from which it gravitates into a storage chamber 136 wherein it is
melted by heating means (not shown). The molten cement gravitates from the
chamber 136 into a bore 137 formed by the interior of a hollow sleeve 138 by
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way of a passage 140 in the hollow sleeve 13~ that provides communication
behleen the chamber 136 and the bore 137 and by way of the interior of a valve
142 and a passage 144 that communicates with the bottom of the bore 137. An
air actuated motor 146 has a do~nwardly directed piston rod 148 that is con-
nected to a plunger 150 the plunger 150 being slideable in the bore 137. A
post 152 is secured to and extends downwardly o~ the mechanism 132. Passages
154 provide communication between the opposite sides of the periphery of the
post 152 and the bottom of the bore 137.
Referring to Figures 14 and 15 the post 152 is seated in a block 156 that
is swingably mounted on the post 152 and is held on the post 152 by a retaining
ring 158 (Figure 19).
Referring to Figures 14 and 15 a pa;r of spindles 160 are rotatably
mounted in extensions 162 of the block 156 for swinging movement about a hori-
zontal axis and a heightwise extending spindle 164 is swingably mounted in each
spindle 160 for s~Jinging movement about a heightwise extending axis in the man-ner shown in U.S. Patent No. 3 963 840. A nozzle carrier 166 is mounted to
each spindle 164 so as to extend forwardly thereof and a nozzle holder 170 is
pivotally mounted to the front of each nozzle carrier 166 for s~Anging movemenL
about a heightwise extending axis substantialiy as shown 'n ~.S. Patent No.
2 3 901 181. A motor 172 mounted to each sp;odle 160 has a forwardly directed
piston rod 174 that is connected to each nozzle holder 170 to ef~ect swinging
movement of its associated nozzle holder 170. A nozzle 176 is mounted to and
extends downwardly of each nozzle holder 170. Interconnected passages not
shown in the members 155 162 160 164 166 and 170 provide communication
between the passages 154 and the bottoms of the nozzles 176 substantially in
the manner shown in U.S. Patent-~os. 3 901 181 and 3 963 840. Strategically
located electric heaters not shown serve to maintain the cement in these
passages molten.
An arm 178 extends radially from each spindle 164. One of the arms 178 is
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conllected to the cylinder 180 of an air operated motor 182 and the other arm
178 is connected to the piston rod 184 of the motor 182 whereby the motor 182
may effect rotation of the spindles 164 in the spindles l60 and thereby effect
in\Jard and outward movements o~ the nozzles 176.
Referring to Figures 14, 15 and 20-22, a frame 186 is attached to the
block 156. Flanges 188 extend rearwardly of the frame 186 on each side of the
frame 186 and an air operated motor 190 is pivoted to the back of each flange
188 by a pivot pin 192. The forwardly directed piston rod 194 of each motor
190 is secured to a clevis 196, Each clevis 196 is pivoted by a pin 198 to a
lug 200 that is secured to and depends from one of the spindles 160. A rear-
~ardly facing plunger 20Z is secured to each clevis 196 and a valve 204 is
secured to each flange 188. The stem 206 of each valve 204 is located rear-
wardly of and in registry with its associated plunger 202. The motors 190 can
thus be seen to effect swinging movement of the spindles 160 in the block
extensions 162 and thereby effect heightwise movement of the nozzles 1i6. A
stabilizer bolt 208 (Figures 14 and 15) is mounted to and extends rearwardly of
each side of the ~rame 186. A spring return air operated motor 210, moullted to
each side of the plate 120, has a forwardly directed piston rod 212 that is in,
registry with ,its associated stabilizer bolt 208. Each piston rod 212 has a
head 214 mounted thereon that is adapted to engage its associated bolt 208 in
the manner described below.
Referring to Figures 23-25, a brace 216 is anchored to the main slide
plate 90 for forl~Jard-rearward movement therewith. A mount 218 is secured to '
the brace 216 and a housing 220 is secured to the mount 218. The housing 22n
is slideabiy moùnted on a rod 222 that extends between the posts 106 and 110
and the bottom of the housing 220 has a roll 223 fixed thereto that is slide-
ably received in- a cut out 224 in the head 88, thus enabling the housinq 220 topartake of the forward-reanrJard movement of the main slide plate 90.
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A valve bank 226 is pivotally mounted to the housing 220 for heightwise
swinging movement about a p;vot pin 228. The valve bank 226 includes three
side by side valves 230, 232 and 234 which respectively have upwardly extending
valve actuators 236, 238 and 240. An air actuated motor 242, mounted to a
hanger 244 of the housing 220, has a piston rod 246 that is connected to the
valve bank 226 thus enabling the motor 242 to effect heightw;se movement of the
valve bank 226. A strut 248 connected to the bearing block 116 mounts a cam
bank 250. The cam bank 250 consists of three side by side rearwardly directed
cams 252, 254 and 256 that are respectively in registry with the valve actua-
o , tors 236, 238 and 240 when the valve bank has been raised by the motor 242 toan upper position. The cam 254 extends further rearwardly than the cams 2~2
and 256. A latch 258 is mounted to the valve bank 226 for he;ghtwise movement
therewith and, when raised to an upper position by the motor 242, is in inter- ',,
sect;ng relation with a detent 260 that is mounted to the strut 248.
Referr;ng to F;gures 26-28, a pair of vert-ically spaced rods 262 and 2~4
, are so mounted to the head 88 as to be'below and outwardly offset from the rod
114 extending between the posts 108 and 112. A housing 266 is slideably moun'edon the rods 262, 264 for forward-rearward movement. A valve bank 268, contain-
ing three side by side,valves 270, 272 and 27,4, is mounted to the housing 266
~o for forward-rearward adjustment. The valves 270, 272 and 274 respectivel'y
have upwardly extending valve actuators 276, 278 and 280. An air actuated
motor 282 is so mounted to the housing 266 as to have piston rod 284 directed
rearwardly with the piston rod located forwardly of and in alignment wîth the
valve actuator 276. A stop pin 286 (see Figure 30) is mounted to the motor 282
for for~Yard-rearward adjustment and is located within the cylinder 288 of the
motor 282 forwardly of the piston 290 of the motor 282. An adjusting mechanism `'
292 50 connects the stop pin 286 and the valve bank 268 as to enable them to be
adjusted forwardly and rearwardly in unison. A tail 2~4 depends from the
hous;ng 266.
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As shown in F;gure 29, a bracket 296 extends between elements 298 and 300
of the head 88. A pair of arms 302 and 30a are pivotally mounted to the bracket296 and a brake pad 306 is pivoted to the top of each of these arms ~Jith the
brake pads being located on opposite sides of the tail 29a. The bottom of the
arm 302 is pivoted to the cylinder 308 o-F an air operated motor 310 and the
bottom of the arm 304 is pivoted to the piston rod 312 of this motor. The
motor 3I~ is therefore actuable to move the brake pads 306 towards and away
from the tail 294.
Referring again to Figures 26-28, a cam bank 314 is mounted to the bearing
o block 118 for forward-rearward movement therewith. The cam bank 314 includes
cams 316, 318 and 320 that are respectively in alignment with the valve actua-
tors 270, 272 and 274, the cam 320 also being in alignment w;th the piston rod
284. The cam 320 extends further forwardly than the cams 316 and 318.
Referring to Figures 28 and 31, a link 322 is sec~red to the housing 266
and depends from and extends forwardly of this housing. A link 324 is secured
to and extends reanlardly of the housing 30. A pin and slot connection 326
connects the ~inks 322, 324 for unitary for~rard-rearward move~ent whereby the
motor 32 effects concurrent forward-rearward movement of the housings 30 and
266.
Referring to Figures 11, 12, 16 and 32, a lug 328 depends from each side
of the front of the main slide plate 90 and a rod 330 is adjustably mounted to
each lug 328 for forward-rearward adjustment. Each rod 330 is captured ;n a
gib 332 that is secured to each sled 80, the gibs 332 being 50 constructed as
to enable the main slide plate 90 and the sleds 80 to move forwardly and rear-
wardly in unison while permitting the sleds 80 to have inward-outward movemen.
with respect to the main slide plate 90.
In the idle condition of the machine: the p;ston rod 18 is retracted into
the motor 16 to maintain the shoe assembly support 63 in a lo~er position; the
piston rod 34 is projected out of the motor 32 to maintain the toe rest a4, the
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finger 56, the valve bank 268 and tne motor 2~2 in for~ard positions; the motor
3B causes the piston rod 40 ~o move upwardly to thereby resiliently urge the
toe rest 44 upwardly under the force of pressurized air in the motor 38; the
piston rod 48 is projected out of the ~otor 46 to maintain-the finger 56 in an
upper position with respect to the toe rest 44 with the finser extending
upwardly of the toe resti the piston rods 70 are retracted into the motors 68
to thus maintain the bases 84 in outer posit;ons and thus position the side
lasting instrumentalities 86 in outer positions wherein they do not interfere
~ith the placement of a shoe assembly on the shoe assembly support 63 as
o described below, the piston rod 94 is retracted into the motor 92 to maintainthe main slide plate 90 and the heel clamp 98 and the heel wipers 100 carried
by the main slide plate 90 in rearward positions, the motor 92 also, through
: the connection provided by the members 328, 330 and 332 thus maintain;ng the
sleds 80, together with the side lasting instrumentalities 86, in rearward
positions on the rods 82; the piston rod 128 is retracted into the motor 126 to
thereby locate the plate 120 and the parts carried thereby? including the noz-
zles 176, in a rearward position ~ith the detent 260 located rear~Jardly of the
valve bank 226 and the latch 258; the piston rod 148 is retracted into the
motor 146 so that the bottom of the plunger 150 is above the passage 14n; the
piston rods 174 are projected out of the motors 172 so that t;ps 334 (Figure 14) ~.
at the bottoms of the. no2zles 176 point out~ardly substantially at r;ght angles-
to the long;tud;nal center line of the machine; the piston rod 184 is retracted
into the cylinder 180 of the motor 182 so that the nozzles 176 are swung about
the axes of the spindles 164 to positions that are relatively close to each
other; the p;ston rods 194 are projected out of the motors 190 to thereby move
the nozzles 176 about the ax;s of the sp;ndles`160 to raised pos;t;ons; the
p;ston rods 21? are projecting out of the motors 210 with the heads 214 bearing
against the stabilizer bolts 20B so that the block 156, to~ether with the ...
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nozzles 176, is restrained against movement about the upright axis of the post
152; the piston rod 246 is retracted into the motor 242 to thereby lower the
latch 250 out of intersecting relationship with the detent 260 and to lower the
valve bank 226 out of intersecting relationship ~ith the cam bank 250; the pis-
ton rod 284 is projected to its greatest extent rearwardly of the motor 282. as
shown in Figure 30, so that the piston 290 is spaced from the stop pin 286, the
cam bank 314 at this t;me being rearward of the valve bank 2~8; and the piston
rod 312 is retracted into the cylinder 308 of the motor 310 so that the ~rake
pads 306 are spaced from and not in engaqement with the tail 294.
~O Thermoplastic cement is deposited in the funnel 134 of the pumping mech-
anism 132 and gravitates into the storage chamber 136 wherein it is melted
The molten cement flows from the chamber 136 through the passage 140 and throughthe interior of the valve 142 and the passage la4 into the bottom of the bore
137. From the bottom of the bore 137, the molten cement flows through the pas-
sages 154 and the above mentioned interconnected passages in the members 156,
162, 160, 164, 166 and 170 up to valves in each nozzle holder 170 that are
similar to the valves in the nozzle holders shown in U.S. Patent ~o. 3,90?,181.
A shoe assembly 336 (Figures 33 and 33A) comprising a last 338 hav;ng an
insole 340 located on its bottom and an upper 342 mounted thereon is placed
bottom-up on the shoe assembly support 63 ~ith the vamp of the shoe assembly
resting on the toe rest 44, with the back cone 344 of the last resting on the
support plate 22 and with the last pin 20 inserted into the thimble 346 in the
heel portion of the last so that the toe of the shoe assembly faces forwardly.
At this time the detector finger 56 is located forwardly of the toe end extrem-
ity of the shoe assembly 336 an amount that is dependent on the length of the
shoe assembly 336 and that is also dependent on the distance bet~leen the
thimble 346 and the toe end extremity of the shoe assembly. Prior ~o place-
ment in the machine, the shoe assembly 336 had been toe lasted so that the toe
portion 347 (see Figure 34) of the upper margin had been wiped against and
attached to the insole 340.
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Pursuant to the placernent o~ the shoe assembly 336 on the shoe assembly
support 63, a valve (not shown) is shifted to so actuate the motor 32 as to
retract its pis~on rod 34 rearwardly under the yie~dable force of pressurized
air to thereby yieldably move the bracket 42, together ~ith the toe rest 44 and
the detector finger 56, rearwardly with the toe rest sliding under the shoe
assembly vamp until this rearward movement is term;nated by the engagement of
the detector finger 56 with the toe end extremity of the shoe assembly 336 as
indicated in Figure 33. The links 322, 324 and the connection 3~6 enables the
housing 266, together with the valve bank 268 and the motor 282, to move rear-
wardly on the rods 262, 264 in unison with the rearward movement of the bracket
42.
In response to the engagement of the detector finger 56 with the toe end
of the shoe assembly, the detector finger is swung counter-clockwise (Figure 8)
about the axis of the pin 54 to thereby cause the arm 52 to engage and shift
the valve spool 62 of the valve 60. In response to this shifting of the valve
60, the hold-down 102 ;s caused to move forwardly over the heel portion of the
shoe assembly 336 and to be lowered to a position wherein its bottom is at sub-
stantially the same elevation as the-plane of the bcttoms of the heel ~ipers 98
in $he manner shown in U.S Patent No. 3,963,840. This is followed by an actu-
ation of the motor 16 to project its piston rod 18 upwardly under relatively
low pressure to thereby raise the bar 14, together with the shoe assembly sup-
port 63 and the detector finger 56, until the heel seat portion 348 (Figures 33
and 33A) of the insole bears against the bottom of the hold-down 1~2 to thus
locate the ;nsole heel seat portion 348 in a plane substantially level w;~h the
plane of the bottoms of the heel wipers 98 in a plane parallel to the plane of
movement of the heel wipers 98.
Referring to Figures 4 and 5, a brake plate 350 is connected to the bar 14
for heightwise movement therewith and is located between a pair of brake arms
352 that are pivotally mounted on levers 354. The levers 354 are pivoted to
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the bracket 12 by means of pins 356. The back end of one of the levers 354 is
pivotally connected to the piston rod of an air actuated motor 358 and the back
end of the other lever 354 is pivotally connected to the cylinder of the motor
358.
In the idle condition of the machine, the motor 358 is so actuated as to
cause the brake arms 352 to be spaced from the brake plate 350 so that the
brake arms 352 will not interfere with the aforementioned raising of the bar 14
Pursuant to the raising of the bar 14 and the bearing of the insole heel seat
portion 348 against the bottom of the hold-down 102, the motor 358 is actuated
o to force the brake arms 352 against the brake plate 350 to thereby lock the
bar 14 and the shoe assembly support 63 in their riased positions.
Also pursuant to the raising of the bar 14 and the bearing of the insole
heel seat portion 348 against the bottom of the hold-down 102, the motor 32 is
actuated to relieve the rearwardly directed movement of its piston rod 34 and
thus relieve the rearwardly directed force applied by the detector finger 56
' against the toe end of the shoe assembly 3~6and the motor 46 is actuated to
lower its piston r~d 48 and thereby lower the detector finger 56 out of engage-
ment with the toe end of the shoe assembly 336. The relieving of the rearwardlydirected force of the detector finger 56 against the toe end of the shoe
assembly 336 enables the detector finger to move downwardly without snubbing or
being caught on the toe end of the shoe assembly. However, due to inertia and
the yieldable upwardly directed pressure applied by the toe rest 44 against the
vamp of the shoe assembly 336 by the'motor 38, there is no significant forward-
rearward shifting of the bracket 42 and the housing 266 when the rear~Jardly
directed movement of the p;ston rod 34 is relieved. '
Also pursuant to the raising of the bar 14 and the bearing of the insole
heel seat portion 348 against the bottom of the hold-down 102, the motor 92 is
'actuated to move its piston'rod'94 forwardly to thereby move the ma;n slide
plate 90 fbrwardly. As shown in Figure 17, the heel clamp 98 has a bight 360
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and a pair of legs 362 extending forwardly and divergenLly from the bight. In
the idle position of the machine, the heel clamp is held in an open position
ith the legs 362 spaced relatively far apar~ by the mechanism shown in U.S.
Patent No. 3,963,840. The forward movement of the main slide plate 90 causes
concurrent forward movement of the heel clamp 98 and the heel wipers 100, this
forward movement being terminated in response to the engagement of the clamp
bight 360 with the heel end extremity of the shoe assembly 336 by the mechanism
disclosed in U.S. Patent No. 3,963,840 to thereby position the heel clamp 98 in
a clamping position and the heel wipers in a position of readiness for wiping
o in a desired relationship with the heel end of the shoe assembly 336 regardless
of the location of the heel end of the shoe assembly, the location of the heel
end of the shoe assembly being dependent on the forward-rearward distance
between the spindle 346 and the heel end of-the shoe àssembly. Due to the con-
nection formed by the members 328, 330 and 332 shown in Figure 32 between the
main slide plate 90 and the sleds 80, the sleds 80, together wi~h the side last-
. .
ing instrumentalities 86, partake of the forward movement of the main slideplate with the sleds 80 moving along the rods 82. By the mechanism shown in
U.S. Patent No. 3,963,840, in response to the engagement of the clamp bight 360
with the hee~ end of the shoe assembly 336, the clamp legs 362 are caused to
~O move inwardly-to clamp the sides of the heel end of the shoe assembly to thereby
enable the clamp g8 to clamp the entire heel end of the shoe assembly as shown
in Figure 34.
Referring to F;gures 13 and 35, each side lasting instrumentality 86
;ncludes a lasting strap 366 made of an elastic, flexible and deformable mate-
rial such as urethane. The top of each lasting strap 366 is formed into a
plurality of rigid top segments 366a.
At this time in the machine cycle, the operator momentarily shifts a pair
of valves mounted at the tops of posts 370 (Figures 1-3) at the front of the
machine. The shifting of these valves actuates the motors 68 to move the sleds8
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togetiler with the bases 84 and the side lasting instrumentalities 86,inwardly
to positions wherein the side lasting instrumentalities are close to but not in
engagement with the sides of the shoe assembly 336, this inward movemen~ being
permitted by the gibs 332 moving inwardly along the rods 330. This is fol-
lowed, in the manner shown in U.S. Patent Nos. 3,775,797 and 3,962,741 by a
movement of the lasting straps 366 to the position shown in Fig~res 34, 34A and
35 wherein the lasting straps are pressing the side portions of the upper 342
against the sides of the last 338 with the side portions 372 of the upper margin. extending upwardly of the insole 340 and being folded partway towards the insole
~o by the top segments 366a.
The shoe assembly engaging parts are now in the position sho~n in Figures
34 and 34A with the heel clamp 98 pressing the heel portion of the upper 342
against the last 338 and the side lasting instrumentalities 86 pressing the sideportions of the upper against the last.
The momentary shifting of the valves in the posts 370 also so actuates the
motor 310 as to force the brake pads 306 against the tail 294 and thus lock the
; housing 266, the valve bank 268 and the motor 282 in the position they had
assumed pursuant to the engagement of the detector finger 56 with the toe end
extremity of the shoe assembly 336.
The momentary shifting of the valves in the posts 370 also so actuates the
motor 126 as to project its piston rod 128 for~lardly to thus move the plate 120 :
and the parts carried thereby, including the nozzles 176, forwardly with the
now raised nozzles moving over the hold-down 102, The plate 120 continues îts
forward movement until the cam 320 engages the piston rod 284, the cam 320 ~ :intersecting the valve actuator 280 to shift the valve 27~ just before it
engages the piston rod 284. During the forward movement of the plate 120, the
hold-down 102 is raised from the shoe assembly 336 and is moved rearwardly to -
its idle position in the manner shown in U.S. Patent No. 3,963,840 to prevent
interference bet~Jeen the hold-do~m and the nozzles 176 during the belo~
: -20- '~
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.. . . . .. . . .
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described redrward cement applying movement of the nozzles. The heightwise
position of the shoe assembiy 336 is not affected by the disengagement of the
hold-down 102 from the shoe assembly due to the aforementioned locking of the
bar 14 against heightwise movement by the actuation of the-motor 358.
The return of the hold-down 102 to its idle position causes a valve to
shift. Pursuant to the shifting of this valve and of the valve 274, the motors
190 are actuated to retract their piston rods 194 rearwardly under the forces
of pressurized air and thus cause the nozzles 176 to be yieldably lowerèd until
they engage the insole 340 in the general region indicated by the number 374 in
/D Figure 33A wherein the nozzles 176 are spaced from the upper margin and the
insole periphery laterally of the side portions of the upper margin and the
insole periphery that are between the toe and heel portions of the shoe assembly336 and that are rearward and heelward of the boundaries between the previously
lasted toe portion 347 of the upper margin and the unlasted side portions 372
of the upper margin. This desired location of the position of engagement 374
of the nozzles 176 with the insole 340 is accomplished automatically regardless
of the length of the shoe assembly 336 and regardless of the forward-rearward
distance between the last thimble 346 and the toe end extremity of the shoe
assembly due to the forward-rearward position of the housing 266, and thus of
20 the valve 274 and the valve actuator 280, being determined by the position ofengagement of the detector finger 56 with the toe end extremity of the shoe
assembly 336.
The lowering of the nozzles 176 causes the plungers 202 to shift the valves
204. The shifting of the valves 204 shuts off the flow of pressurized air to
the mo~ors 210 so that the return springs of these motors retract the heads 214
out of engagement with the stabilizer bolts 208 to thereby enable the motor 182
to move the nozzles 176 outwardly. The shifting of the valves 204 also so :
actuates the motor 1~2 as to move its cylinder 180 and piston rod 184 away from
each other and thus move the nozzles 176 outwardly under the yieldable force of
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pressurized air into the angles bet~een the insole 340 and the upper margin
side portions 372 until the nozzles reach the corners between the insole and
the upper margin side portions as indicated in Figure 35.
The shifting of the valves 204 also actuates a pneumatic timer, which
after the lapse of a predetermined time period, actuates the motor 282 to
retract its piston rod 284 in a for~ard direction until the piston 290 engaqes
the stop pin 286. The motor 126 is therefore able to impart a resumption of
forward movement of the plate 120, together with the nozzles 176, an amount
` that is equal to the amount of retraction of the piston rod 284 in the motor
o 282 when the cam 320 again engages the piston rod 284 to again stop forward
movement of the plate 120 and the nozzles 176. During this resumption of for-
ward movement of the nozzles 176, the nozzle tips 334 are resiliently urged
outwardly against the side portions 372 of the upper margin by the motor 182
and are resiliently urged downwardly against the insole 340 by the motors 190
so that they are being urged into the corner between the upper margin side por-
tions 372 and the insole 340 when this resumption of forward movement is termi-
nated. The shoe assembly is so cons-tructed and the stop pin ;s so located in
the motor 282 that the nozzle tips 334 are at the boundaries between the lasted
toe portion 347 and the unlasted side portions 372 of the upper margin when the
resumption of forward movement of the nozzles 176 is terminated.
The pneumatic timer actuated by the shifting of *he valves 204, after the
lapse of said predetermined time period, also actuates the motor 242 to project
its piston rod 246 to thereby raise the valve bank 226 about the pivot pin 228
to bring the valve actuators 236, 238 and 240 respectively into registry with
the cams 252~ 254 and 256 and to bring the latch 258 into registry with the
detent 260.
Pursuant to the aforementioned resumption of for~ard movement of the plate
120, the cams 316 and 318 respectively engage the valve actuators 276 and 278
to thereby respectively shift the valves 27n and 272. The shifting of the
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35a ~
valve 270 actuates the motor 126 to retract its piston rod 128 to thereby move
the plate 120, together with `the nozzles 176, rear~lardly. The shifting of thevalYe 272 actuates the motor 146 to project its piston rod 148 and thus move
the plunger 150 downwardly and force molten cement out of.the nozzle tips 334
into the angies between the side portions 372 of the upper margin and the side
peripheries of the insole 340. The downward movement of the plunger 150 cuts
off communication between the chamber 136 and the bore 137 through the passage
140. The pressures generated pursuant to the down~lard movement of the plunger
150 causes a ball 376 (Figure 19) that normally sits on a pin 378 to rise and
~o seat against the valve 142 to thereby cut off communication between the chamber -
136 and the bore 137 through the valve 142 and the passage 144. The piate 120,
together with the nozzles 176, continues its rearward movement until the detent
260 engages the latch 258.
The nozzle tips 334 continue to be urged into the corners formed by the
upper margin and the insole periphery from the boundaries between the lasted
... . .
toe portion 347 of the upper margin and the unlasted side portions 372 of the
upper margin to the heel end extremity of the upper margin during their rear-
ward movement in the manner shown in U.S. Patent No. 3,901,181, with the motors
172 being actuated to swing the nozzles 176 heelwardly about the axes of the
pivotal mounting of the nozzle holders 170 to the nozzle carr;ers 166 pursuant
to the shifting of the valve 230 by the engagement of the cam 252 with the
valve actuator 236. `
During this rearwar~ movement of the nozzles 176, the cam 256 engages the
valve actuator 240 to shift the valve 234. The shifting of the valve 234
causes actuation of the motor 180 to swing the nozzles 176 ;nwardly and towards
each other when the nozzles are proximate to the heel end extremity of the heel
portion 380 (Figure 34A) of the ùpper margin for the purposes set forth ~n U.S.
Patent No. 3,901,181.
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4~5~`
The eng2gement of.the detent 260 ~ith the latch 258 terminates the rean.~ar~
mov~me nt of the plate l20. and the concurrent rear~lard cem2nt applyiny move-
ment of the nozzles 176. The aforementioned forward movement of the ma;n slide
plate 90 to bring the clamp bight 360 into engagement with the heel end of the
shoe assembly 336 had also, through the connection between the main slide plate
90 and the housing 220 by the brace 216 and the mount 218, moved the latch 258
and the valve bank 252 forwardly ~o that the latch 258 and the valve bank 252
are located in forward-rearward positions that are dependent on the forward-
rear~lard position of the heel end of the shoe assembly 336, thus ensuring that
the nozzles terminate their rearward movement at the heel end of the shoe
assembly and also ensuring that the valves 230 and 234 are located in the
proper positions to ensure that the operations described above that are per-
formed pursuant to the shifting of these valves take place in a desired rela-
tionship to the heel end of the shoe assembly.
It is desirable that a uniform quantity of cement be applied in the corner
bet~leen the side and heel portions of the upper margin and the insole peripheryduring the heelward movement of the nozzles.l76 so that, during the belo~
described side and heel wiping operations, there will be an adequate amount of
cement to ena~le the side and heel portions of the upper margin to be bonded to
~o the insole pursuant to the side and heel wiping operations and ~o tha~ therewill not be an excess of cement applied which would cause the cement to be
squeezed out inwardly of the side and heel portions of the upper margin onto
the exposed insole pursuant to the side and heel wiping operations. When the
motor 126 is actuated to cause rearward movement of the slide 120 and the noz-zles 176, the nozzles commence their rearward movement at a relatively slow
speed before the motor 126 can cause the rearward movement of the nozzles to
accelerate to a desired speed. Therefore if the motor 146 causes cement to be ...
extruded from the nozzles 176 at the same rate during the entire rearuard ce~ent
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applying movement of the nozzles there ~ould either be an excess of ce.~ent
applied ~lhen the nozzles are moving rearwardly relatively slo~lly at thè coln- -
mencement of their cement applying movement or there would be an inadequate
amount of cement applied when the nozzles have accelerated so as to move rear-
wardly at a relatively high speed. In order to overcome this drawback, at the
commencement of the rear~lard cement applying movement of the nozzles 176, pres-surized air passes to the head end of the motor 146 through a regulator set at
a relatively lo~Y pressure to thereby cause the plunger 150 to move do~mwardly
at a relatively low speed and thus cause the cement to be extruded through the
~ nozzle tips 334 at a relatively low rate. Pursuant to the rearward cement
applying movement of the nozzles 176, the cam 254 engages the valve actuator
238 to thereby shift the valve 232, this valve remaining shifted during the
remainder of the rearward cement applying movement of the nozzles 176. The
shift;ng of the valve 232 cuts off the flow of pressurized air to the head end
of the motor 146 through the regulator set at the relatively low pressure and
~ instead causes pressurized air to pass to the head end of the motor 146 through
a regulator set at a relatively high pressure to thereby cause the ylunger 150
to move do~m~ardly at a relat;vely high speed and cause the cement to be
extruded through the nozzle tips 334 at a relatively high rate.
2~ The aforementioned shifting of the valve 240 by the cam 256 causes actua-
tion of a second pneumatic timer and a third pneumatic timer. After the iapse
of a predeterm;ned period of time, the actuation of the second pnellmatic timer
causes actuation of the motor 146 to retract its piston rod 148 to its idle
position and thus terminate the extrusion of cement through the nozzle tips 33A
After the lapse of a predetermined length of time, the actuat;on of the
third pneumatic timer actuates the motors 190 to project their p;ston rods 194
and thereby raise the nozzles 176 to their idle positions.
The actuation of the third pneumatic time~,after the lapse of the pre-
determined length of time referred to in the preceding paragraph, simultaneously
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causes an inward wiping movement of the side lasting instrumentalit;es 86 in
the manner disclosed in U.S Patent No. 3,963,840 and a forward and inward
movement of the heel wipers 100 in a heel wieing stroke also in the manner dis-
closed in U.S. Patent No. 3,963,840 to thereby cause the side lasting instru-
mentalities and the heel wipers to respectively wipe or fold the side and heel
portions of the upper margin against the insole and bond these wiped margin
portions to the insole by means of the previously applied cement. During these
wiping movements, the side lasting instrumentalities 86 and the heel wipers 100
come close to each other but do not impinge on each other regardless of the
o position that the heel wipers assumed at the termination of the aforementioned; forward movement of the main slide plate 90 due to the side lasting instrumen-talities 86 partaking of the forward movement of the main slide plate 90 by ~
virtue of the connection formed by the members 32~, 330 and 332 between the
main slide plate 90 and the s;de lasting instrumentalities 86. Therefore,
regardless of any change in the length of the shoe assembly 336 and regardless
of any change in the forward-rearward distance between the thimble 3~6 and the
. heel end extremity between two succeeding shoe assemblies presented to the
machine, there is no need to manually adjust the forward-rearward position of
the side lasting instrumentalities 86 relative to the heel wipers 100 behleen
20 the machine cycles for the two succeed;ng shoe assemblies. During the side
ping opnrations b~r the side lasting instrumentalities 86, the upward yielding
of the toe rest 44 by the motor 38 coacts with the side lasting instrumentali-
ties 86 in the manner shown in U.S. Patent No. 3,962,741~ The detector finger
56 was lowered out of engagement with the toe end extremity of the shoe assembly336 prior to the side wiping operation to prevent interference bet~leen the
detector finger and the side lasting instrumentalities 86 during the side wipir~operation, this interference being most likely to take place if the detector
finger is not so lowered when operating on relatively short shoe assemblies.
At or near the end of the heel ~iping stroke, the motor 358 is so actuated
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''`' ' ~L~7~ 5~'
.
as to cause the brake arms 352 to disengage the brake plate 350 and thus unlock
the support 63 for heightwise''movement. At about the same time, air is intro~
duced under increased bedding pressure to the motor 16 to cause the support 63
to be so forced upwardly as to press the wiped~side and heel portions of the
upper margin against the side lastin~ instrumentalities 8~ and the heel wipers
98 under increased bedding pressure to thereby flat~en the wiped side and heel
portions of the upper margin and enhance the bon'd bet~seen these margin portions
and the insole. When this bedding pressure has been applied for a desired
length of time, the motor 242 is actuated to retract its piston rod 246 so that
the latch 258 is lo~lered out of engagement with the detent 260 and the valve
bank 226 is lowered out of engagement with the cam bank 250 thus enabling the
motor 126 to resume the rearward movement of the plate 120 and the nozzles 17~
to return them to their idle positions and the other parts that have not alreadydone so are returned to their id1e positions. The machine cycle is now com-
pleted and the lasted shoe assembly 336 is removed from the machine.
There follows a recapitulation of the description of the machine parts and
the mode of operation ~f the machine that are pertinent to th;s invention~
The machlne is operable on the shoe assembly 336
that s formed of the last 3i8 havina the~ insole 340
located on its bottom and the upper 342 mounted thereon with the toe portion'
347 of the upper margin be;ng wiped against and secured to the ins~le and
unwiped portions 372 of the upper margin extending heelwardly of said \iped
upper margin portion and the machine has the function of applying cement ~n the
corners between said unwiped margin portions and the corresponding portions of
the insole periphery. The machine comprises the shoe assembly suppor~ 6~ for
supporting the 5hoe assembly 336 bottom-up with the toe end of the shoe ass~m-
bly facing forwardly. The pair of nozzles 176, located above the shoe assem~ly
336, are mounted for for~ard-rearward movement, for heightwise movemen~, and
for in~ard-outward movement. The pis'ton rod 284 constitutes a stop member that
. - 27 -
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- . ~ .
is located in a particular location. The cam 320 constitutes an engaging mem~
ber, mounted for forvard-rearward movement in unison with the nozzles ;76, that
is located rearwardly of the stop member 284 in intersectin~ relatianship uith
the stop member. The motors 126, 190, and 182 res~ectively act as means for
initially retaining the nozzles 176 in rear~Jard, upper, and inner posîtions~
The motor 126 constitutes means ~or thereafter maving the nozzles 176, tagether
with the engaging member 320, for~ardly until the engaging member 320 engages
the stop member 284. The motors l90 and 182 respectively constitute means for
thereafter effecting lowering and outward movements of the nozzles 17~ to move
~ the nozzles into said corners heelwardly of the boundaries between said wiped
and un~liped margin portions. The motor 282 acts as means for thereafter remoY-ing the stop member 284 from said particular location to enable the nozztes 176
to resume their forward movement so as to bring the nozzles to said boundaries.
The motors 126, 190 and 1~2 act as means operative when the nozzles 176 have
arrived at said boundaries to effect rearward movement of the nozzles while ~
maintaining the nozzles in said corners. The cement pumping mechanism 132 acts
as means for extrud;ng cement from the nozz~es 176 into said corners during saidrearward movements of the nozzles.
The machihe described in the preceding paragraph is improved
~o by comprising a detector member, constitute~ b~ the
fingDr 56, tha- is mounted for forward-rearward movement. The rods 262~ 2O~
movably mounting the stop member 284 and the links 322, 324 connectîng the stop
member 284 to the detector member 56 constitute means so mounting the stop m~m-
ber 284 and so connecting the stop member to the detectar member 56 as to cause
the stop me~ber~to have forward-rearward movement in unison with the detector
member. The motor 32 acts as means for initially locating the detector mem~er
56 in a forward position that is forward of the toe end extremity of the shoe
assembly 336 and also acts as means, operative prior to the forward moYement o.
the no~zles 176 fir5t mentioned in the preceding paragraph, for yielda~ly mov,ng -~-
- 28 -
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.: ' ' . . . ' .; . : .' ' ' . ~ . .
l~r~v~
the detector member 56, together with the stop member 284,rearwardly to bring the detector member into e~gagement with
the toe end extremity of the shoe assembly and to thereby bring
the stop member to said particular location.
The above-described arrangement, including the detector
member, is also described and is claimed in parent Application
Serial No. 294,398.
The means mounting the stop member 284 and connecting
the stop member to the detector member 56 comprises the housing -
266, herein referred to as a back housing, to which the stopmember is mounted, the back housing 266 being mounted for
forward-rearward movement, and the connection formed by the
links 322, 324 between the detector me~ber..56 and the back
housing 266 enabling the detector member and the back housing to
have unitary forward-rearward movement. The stop member 2~4 is
mounted to the back housing 266 for forward movement
from a rearward stop member position that is determinative of
said particular location to a forward stop member position that
is in intersecting relationship with the engaging member 320.
The means for removing the stop me~ber 284 from said particular
location comprises the motor 282 which acts as means for moving
the stop member from said rearward stop member position to said
forward stop member position, the intersection of the engaging
member 320 with the stop member 284 during the resumption of the
forward movement of the nozzles 176, referred to in the precedin~
paraqraph, when the stop member 284 is in said forward stop ~.
member position being determinative of the arrival of the nozzles
176 at said boundaries.
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The shoe assembly support 63 comprise~ the last pin 20
and the support plate 22, which constitute a back support
element for supporting the back part of the shoe assembly 336,
and the toe rest 44, which constitutes a front support element
for supporting the forepart of the shoe assembly 336. The
housing 30, hereafter referred to as a front housing, is located
forwardly of the back support element 20, 22 and is mounted for
forward-rearward movement and the front support element 44 is
mounted to the front housing 30. The detector member 56 is
mounted to the front housing 30 and is located forwardly of and
extends upwardly of the front support element 44. The motor 32,
which acts as means for yieldably moving the detector member 56
rearwardly, is a yieldable force applying drive mechanism that
is connected to the front housin~ 30. The connection formed
~y the links 322, 32~ is between the front housin~ 30 and the
back housing 266 and enables the two housings to have unitary
forward-rearward movement.
The machine is operable on the shoe assembly 336 that is
formed of the last 338 having the insole 340 located on its
bottom and the upper 342 mounted thereon. The shoe assembly
support 63 supports the shoe assembly 336 bottom-up with the
toe end of the 9hoe assembly facing forwardly and with the side
and heel portions of the upper margin extending upwardly of
the insole. The main slide plate 90, locate~ rearwardly of the~ -
support 63, is mounted for forward-rearh~ard movement. The heel
wipers 100 constitute heel wiping means that are mounted to the
,
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.:
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slide plate 90 for forward movement with respect to this
slide plate in a heel wiping stroke from a retracted position
wherein the heel wiping means 100 is in a position in readiness
for wiping to an advanced position wherein the heel wiping
means 100 has wiped the heel portion of the upper margin against
the corresponding portion of the insole periphery. The heel
clamp bight 360 constitutes a shoe assembly engaging member that
is mounted to the slide plate 90 below the heel wiping means
100. The lasting straps 366 constitute side wiping means,
located on each side of the support 63, that are each mounted
for inward move~ent from a position of disengagement with the
shoe assembly 336 through a side wipin~ stroke ,o an inner
position wherein the side wiping means 366 has wiped a side
portion of the upper margin against a corresponding portion of
the insole periphery. The motor 92 acts as means for initially
maintaining the slide plate 90 in a rearward position. The heel
wiping means 100 is initially maintained in its retracted
position by an air operated motor 380 (Figures 16 and 17) being
so actuated as to retract its piston rod 382 in the manner
shown in U.S. Patent No. 3,963,840. The motor 92 is thereafter
so actuated as to provide means for thereafter moving the slide
plate 90 forwardly until the shoe assembly engaging member 360
engages the heel end extremity of the shoe assembly. The motor
380 is thereafter so actuated as to project its piston rod 382
and thereby, in the manner shown in U.S. Patent ~Jo. 3,963,840,
act as means for imparting a heel wiping stroke to the heel
wiping means 100. The projection of the piston rods 70 out of
the motors 68 constitutes means for initially maintaining each
side wiping means 366 in its position of disengagement. Motors
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384 and 386 (Figure 13) are thereafter so actuated as to
constitute means for imparting said side wiping stroke to each
of said side wiping means 366 in the manner shown in U.S.
Patent Nos. 3,775,797; 3,962,741 and 3,963,840
` The machine described in the preceding paragraph i9
improved, by comprising connecting means, constituted by the
rods 82, mounting each side wiping means 366 for forward-rearward
movement and means, constituted by the members 328, 330 and 33~,
so connecting each side wiping means 366 to the slide plate 90
as to cause forward movement of the side wiping means 366
concomitantly with said for~ard movement of the slide plate 90
whereby the heel wiping stroke and the side wiping strokes may
be performed simultaneously regardless of the position of
engagement of the shoe assembly ~ngaging member 360 with the
heel end extremity of the shoe assembly 336.
The machine incorporates the sled 80 located on each side
of the support 63 with each side wiping means 366 being mounted
to its associated sled for inward-outward movement to thereby
provide said mounting for inward-outward movement of the side
wiping means. The motors 68 constitute means for initially
maintaining each sled 80 in an outer position to thereby place
each side wiping means 366 in a relatively remote position
from the support 63 to permit placement of the shoe assembly
336 on the support 63. The motors 68 also act as means for
thereafter moving each sled 80 inwardly to thereby place each
side wiping means 366 in its position of disengagement. In
accordance with this invention, the machine has the improvement
wherein the connecting means comprises the connecting member in ~:
the form of the rod 330 associated with each sled 80 that i5
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rigidly connected to the slide plate 90 and is so connected
to its associated sled 80 as to permit inward-outward movement
of its associated sled.
The side and heel lasting machine, as described above,
is also described and is claimed in a copending Canadian
divisional Application Serial No. 325,310, filed April 11, 197
With respect to the present invention, the machine
incorporates a mechanism for applying a substantially uniform
quantity of cement along the surface of a workpiece. This
mechanism includes the nozzle 176 mounted for movement from a
starting position to a final position along the workpiece and
the motor 126 connected to the nozzle operable to effectuate
said nozzle movement. The motor 126 has controls that act as
means for initially causing the motor to maintain the nozzle
176 in said starting position and means for thereafter operating
the motor to effect said nozzle movement. The cement pumping
mechanism 132 constitutes means for extruding cement from the
nozzle 176 during said nozzle movement.
In accordance with the invention, the mechanism described
in the preceding paragraph has the improvement that includes
first extrusion rate control means, effective at the beginning
of the nozzle movement when the motor 126 is moving the nozzle
176 at a relatively slow speed, to cause the extruding means 132
to extrude the cement from the nozzle at a relatively slow rate
and second extrusion rate control means, operable after the
nozzle 176 has moved a prescribed distance from its starting
position that is less than the distance from its starting
position to its final position at which time the motor ]26 is
moving the nozzle at a relatively high speed, to cause the
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extruding means 132 to extrude the cement from thQ nozzle ata relatively high rate.
The cement applying mechanism includes the cam 254 which
acts as an actuating member and the valve 232 which acts as a
control member, the control member 232 being so located in
intersecting relationship with the actuating member 25~ as to
be intersected by the actuating member when the nozzle 176 has
moved through said prescribed distance. The cement applying
mechanism also includes a control that acts as means responsive
to the intersection of the actuating member 254 with the
control member 232 for operatinq said second extrusion rate
control means.
The extruding means 132 includes the motor 1~6 which
functions as a fluid pressure operated pump. The first
extrusion rate control means comprises means for causing
... .
pressurized fluid to pass to the pump 1~6 to operate the pump
at a relatively low pressure and the second extrusion rate
control means comprises means for causing pressurized fluid to
pass to the pump 1~6 to operate the pump at a relatively high
pressure.
The above-described cement applying mechanism is
also disclosed and is claimed in a copending Canadian
divisional Application Serial No. 325,311 , filed April 11, 1979.
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