CA1040362A - Lasting machine having flexible lasting strap - Google Patents

Abstract

LASTING MACHINE HAVING FLEXIBLE LASTING STRAP
ABSTRACT OF THE DISCLOSURE
A lasting machine for operating on a shoe assembly formed of a last hav-ing an upper mounted thereon and an insole located on its bottom by wiping the side portions of the margin of an upper against the corresponding portions of an insole. The wiping is performed by flexible lasting straps having rigid top segments which are moved from a position wherein the top segments are folded part way towards the insole to positions wherein the top segments press the upper margin against the insole to wipe the upper margin against the in-sole and bond the wiped margin to the insole by means of cement. The machine has nozzles that travel along the corners between the upper margin and the insole periphery, while the top segments are folded part way towards the insole, and apply the cement into the corners during this travel. The shoe assembly is supported bottom-up on a support that applies a yieldable upwardly directed force to the shoe assembly.

Description

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This invention relates to a lasting machine disclosed in Canadian Patent No. 977,108, issued November 4, 1975, and in Canadian patent application Serial Nos. 223,065, filed March 6, 1975, and 236,733, filed September 30, 1975, wherein there are disclosed lasting machines operable on a selected portion of a shoe assembly formed of a last having an upper mounted thereon and an insole located on its bottom by wiplng the corresponding portion of the margin of the upper agalnst the corresponding portion of the insole. These machines each include a support means for supporting the shoe assembly bottom-up with the margin portior. extending upwardly of the insole :
portion. A lasting strap is located outwardly of the upper portion and has a relatively rigid top segment and ,~~ a relatively flexible remainder extending downwardly of the top segment, the top segment anA the remainder being ~ - ~olned by a juncture. A nozzle is located upwardly of } the shoe assembly and is mounted for movement in a cement applying stroke along the corner ~ ~ kam:mar ;i::,. . :: : . . : : . :: : -: . - . . - , : , . :, : . : .: : , ` 104V36'~
zthee[l the margin portion and the periphery oE the insole portion.
In the operation of each of these prior machines, the lasting strap is caused to so engage the upper portion as to cause the lasting strap remainder to press the upper portion against the last with the top segment extending upwardly of the insole portion and with the juncture located approximately level with the upwardly facing bottom of the insole portion. The top segment is so folded that it extends part way towards the insole portion. This is followed by a cement applying stroke of the nozzle during which the nozzle applies cement into the corner between the margin portion and the periphery 10 of the insole portion. After this, the top segment is Eurther folded towards the insole so as to cause the top segment to wipe the margin portion against the insole portion in a wiping operation and bond the margin portion to the insole portion by means of the cement.
The top segment is folded part way towards the insole to force the upper margin against the insole periphery and create a barrier between the upper margin and the lnsole that inhibits the creeping of the cement between the upper marg-ln and the side of the last. In additlon, the Eorce exerted against the upper mar8in pursuant to the folding of the upper margln part way towards the inssle serves as a back-up to limit outward movement of the nozzle during the cement applying stroke.

SUMMARY OF THE INVENTION

It is desirable that the juncture be located substantially at the level of the upwardly facing bottom of the insole during the wiping operation.
However, if the juncture is at this level during the cement applying stroke the top segment tends to be folded so far towards the insole as to block the nozzle from reaching far enough into the corner between the margin portion and the insole portion to apply the cement far enough into this corner. The object of th~s invention is ~o overcome this difficulty.

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According to the present invention there is provided a lasting machine which is operable on a selected portion of a shoe assembly formed of a last having an upper mounted thereon and an insole located on its bottom by wiping the corresponding portion of the margin of the upper against the corresponding portion of the insole. The machine includes support means for supporting the shoe assembly bottom-up with the margin portion extending upwardly of the insole portion and a Lasting strap, located outwardly of the upper portion and having a relatively rigid top segment and a relatively flexible remainder extending downwardly of the top segment, the top segment and the remainder being joined by a juncture. A nozzle is located upwardly of the ~hoe assembly and is mounted for movement in a cement applying ~troke along the corner between the margin portion and the peri-. . .
phery of the insole portion. Resilient means is provided for sobearing against at least a part of the support means as to yieldably urge the shoe assembly portion upwardly. Means cause the lasting 8trap to so engage the upper portion as to cause the lasting strap remainder to press the portion of the upper against the last with the top segment extending upwardly of the insole portion and with the juncture located below the upwardly facing bottom of the insole portion. Means are provided for so folding the top segment that it extends part way towards the insole portion, means are provided for thereafter effecting the cement applying stroke and for causing the nozzle to apply cement into the corner during the cement applying stroke. Means thereafter further fold the top segment towards the insole so as to cause the top segment to wipe the margin portion against the insole portion in a wiping operation A ~ ab/sb ~ - ~a -1~)4V36Z
the resilient mea~s enabling the part of the last that is part of the shoe assembly portion to be depressed during the wiping operation to bring the juncture to the level of the upwardly facing bottom of the insole portion.
It may be seen, therefore, that the machine of the present invention is modified by having resilient means that bear against the support means in such a manner as to yieldably urge the shoe assembly portion upwardly. The lasting strap is so constructed that when the top segment is folded part way towards the insole the juncture is located below the upwardly facing bottom of the insole portion to thereby prevent the top segment from being folded too far toward the insole portion. When the top segment is folded against the insole during the wiping operation, the pressures generated by this folding causes the part of the last that is part of the shoe assembly portion to be de-pressed against the force of the resilient means to thereby bring the juncture to the level of the upwardly facing bottom of the insole portion.

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- BRIEF DESCRIPTION OF TH~ DRAWINGS
Figure 1 is a front view of the machine;
Pigure 2 is a side view of the machine;
Figure 3 is a partially sectional elevation of the support means;
Figure 4 is a view taken along the line 4-4 of Figure 3;
Figure 5 is a side elevation of a base mounting;
~igure 6 is a plan view taken along the line 6-6 of Figure 5;
Figure 7 is a section taken along the line 7-7 of Figure 6;
Figure 8 iB a section taken along the line 8-8 of Figure 7;
Figure 9 i8 an isometric view of a side lasting instrumentality;
Figure 10 is a partially sectional view of a side lasting instrument-ality;
Pigure 11 i8 a side view of the shoe assembly as it appears in the machlne at the beginning of a machine cycle;
Figure llA is a view taken along the line llA-llA of Figure 11;
~ Plgure ~2 18 a plan view~of the shoe assembly as-it appears ln the machlne ~fter the side and heel portlons of the upper have respectively been clamped e~ the la~t by the slte lasting lnstrumentalltles and a heel clamp;
Flgure 12A 18 a sectlon taken along the llne 12A-12A of Plgure 12; and Figure 13 is a view showlng nozzles as they appear when applying cement into the corners between the side portions of the upper margin and the correspondlng portlons of the lnsole perlphery.
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DESCRIPTION OF THE PREFERRED E~BODIMENT
The operator is lntended to stand in front of the machine as seen ln Flgure 1 and to the rlght of the machine as seen ln Flgure 2. Dlrections ~, , extendlng toward the operator (left to rlght in Flgure 2) will be designated as "forward~ and dlrections extendlng away from the operator (right to left ln Figure 2) will be designated as "rearward". The front of the machine i9 closest to the operator and the back of the machine is furthermost from the ~30 ~ ~

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operator. Referring to figures 3 and 4, the mdch1ne fra~e includes a bracket lO hav1ng flanges 12 bolted thereto. A hous1ng 14 1s pivoted to the flanges 12 b~ means of a pivot pin 16 for swinging movement about the vertical ax1s , of the p1n 16. A sleeve 18 is located cn the hous1ng 14 for~ardly of the p1vot p1n 16. An up,wardly and forwardly 1ncl1ned last pin 20 1s secured to the top of a bar 22 that is mounted for heightwise movement 1n the sleeve 18.
A flange 24 1s mounted to the front of the bar 22 by means of screws 26 that connect the flange 24 and the bar 22 and that extend through slots 28 tn the sleeve 18. A plate 30 1s ~ounted to and extends forwardly of the flange 24.
A column 32 is mounted to and extends upwardly of the plate 30 by spaced legs 34 (Figure t) and an air,operated motor 36 is mounted to and extends upwardly of the plate 30 between the legs 34. The p~ston rod 38 of the motor 36 1s secured to a post 40 and the post 40 1s ~ounted for heightwlse move-ment 1n the column 32. A toe rest 42 1s ~ounted to the top of the post 40 , and 1s located forwardly of the last pin 20. A screw 44, threaded 1nto a fl~nge 46 that 1s bolted to the post 40, 1s 1n al1gnment with a lug 48 that 1s anchored to the column 32.
A palr of forwardly directed wings 50 are mounted to the housing 14 and are located on oppos1te s1des of a cam 52. ,The cam 52 1s mounted to a bracKet 54 for forward-rearwdrd ad~ustment and the bracket 54 1s secured to a cross-p1ece 56 o- the mach1ne frame. An atr actuated motor 58, p1 w ted to the bracket lO, has a forwardly d1rected piston rod 60 that 1s p1voted to a lug 62 of the houstng 14.
The last p1n 20 and the toe rest 42 co~st1tute a work support 64 for support~ng a shae assembly that 1s descr1bed below.
Dupl~cate side last~ng mechanlsms 65 are lacated on oppos~te sides of the work support 64 (see F1gure l). Referrlng to Flgures 1, 2 and S-8, each lastlng,un1t 65 1ncludes a table 66 that ~s mounted to the machine frame on s each slde of the work support 64. An a1r actuated motor 68, mounted to each ' . . .~ , , ' '. . ' ' ' , ",, ' ~: :

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table fi6 has a p1ston rod 70 that i5 secured to a frame 72 Eac~ frame 72 1s mounted to its assoc1ated table 66 for ~nward-outward movement by means of rollers 74 A valve 76 is mounted to a bracket 78 that ~s secured to e~ch table 66. The outwardly fac1ng stem 80 of each valve 76 ls 1n reglstry w1th a rod 82 that 1s mounted to 1ts assoc~ated frame 72 A sled 84 is mounted to each frame 72 for forward-rearward moverent A shaft 86 1s rotatably mounted to each frame 72 and 1s threaded into its assoc1ated sled 84 A handle 88 is secured to each shaft 86 whereby rotation of each handle 88 effects forward-rearward adjustment of ~ts assoc~ated sled 84 w1th respect to 1ts associated frame 72 An a1r operated motor 90 1s p1votally mounted to the sled 84 by a pin 92 and extends rearwardly of the p1n 92 The piston rod 94 of the motor 90 1s p1votally connected by a p1n 96 to a lug 98 The lug 98 is secured to and extends outwardly of a hous1ng lO0 The housing lO0 1s pivoted to the s1ed 84 by a p1vot p1n lOZ for arcuate movement about the ax~s of the pin 102 the p1n 102 being located at the lnner rear port~on of the sled 84 Forwardly of tne p1n 102 a p1n 104 1n the housing lO0 1s mov~ble in an arcu~te slot 106 1n the sled 84 the center of curvature of the slot 106 co1nc1d1ng ~1th the ax1s of the p1n 102 A stud 108 mounted to the sled 84, 1s located rearwardly of and in reg1stry w1th the lug 98 An upwardl~ concavo tr cx llO 1n each hous1ng 100 that extends ln forward-rearward d1rect1Ons sl1dably mounts a bracket 112 A pin 114 is mounted 1n each bracket llZ for hetghtwise movement 1n a slot 116 Eaeh pin 114 threadedly rece1ves a bolt 118 that 1s rotatably mounted to 1ts assoc1ate~
hous1ng lO0 A handle 120 1s mounted to the front of each bolt 118 so that rotat~on of each handle 120 can effect forward-rearward movement of 1ts assoc1ated bracket 112 1n the arcuate path of the track llO;
A br~ce 122 1s secured to and extends upwardlj of the outer front and back port10ns of each bracket 112 The top of a li~b 124 1s pivoted to the top of cA brace 172 b/ a p1n 126. A p1n 128 rotatabl~ mounted 1n each .' . ... , .
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bracket 112, rotatably mo~nts a bolt 129 that extends outwardly of its assoc-iated bracket 112. A base 130 is secured to and extends between each pair of limbs 124, the bases 130 overlying the brackets 112. A lug 132, that is secu~ed to and depends from the outer end oE each base 130, rotatably mounts a pin 134. Each pin 134 threadedly receives its associated bolt 129. A
handle 136 is secured to the outer end of each bo~t 129 whereby rotation of each handle 136 can effect heightwise movement of its associated base 130 about the axis of its associated pins 126.
Referring to Figures 9 and 10, each side lasting mechanisn 65 comprises a side lasting instrumentality 138 that is mounted to each base 130. The side lasting instrumentalities 138 are constructed similarly to the side lasting instrumentalities disclosed in applications Serial Nos. 223,065 and 236,733. Each side lasting instrumentality 138 comprises a plurality of supports 140 that are located side by side on each base 130. An outer bracket 142 i8 mounted to and extends upwardly of each support 140. An inner slide bracket 144 is mounted to each support 140, inwardly of its associated outer bracket 142, for inward-outwart movement. An air operated motor 146 is pivoted to each outer bracket l42 and extends inwardly thereof.
A block 152 is mounted to each inner slide bracket 144.
Three plies of material are anchored to each block 152 by bolts 154.
The outer ply is a separate outer presser strap 156 for each support 140, the middle ply is a separate inner presser strap 158 for each support 140, ant the inner ply i9 a single lasting strap 160. The straps 156, 158 and 160 are made of an elastic, flexible and deformable material such as urethane.
The top of the lasting strap 160 is formed into a plurality of rigld top segments 160a. A relatively rigid metal clip 162 is secured to each segment 160a so as to bear against the inner face of the segment 160a. The top of each inner presser strap 158 is formed into a thickened relatively rigid top segment l~s/ ,'; i.

0436Z l l 158a that 1s 1ucated below its associated last1ng strap top segment 160a.
'' I The top of each outer presser strap 156 is formed ~nto a th1ckened relatively r1gld top segment 156a that 1s located below its assoc~ated lnner presser I strap top segment 158a.
¦ The piston rod 164 of each motor 146 is connected to 1ts assoc1ated outer presser strap 156 and inner presser strap 158 by a 11nkage 166 that is descrlbed ~n greater detail 1n applications Ser~al Nos. 223,065and .236;733 -An air operited motor 168 ls assoc1ated with each top segment 160a. Each motor 168 ~s p~voted to a bracket 170 that is secured to the top of each outer bracket 142 w~th the motors 168 extending 1nwardly of the brackets 170. A
socket 172 1s embedded in each last1ng strap top segment 160a. Each socket 172 rotatably rece~ves a ba11 174 that is mounted to the 1nner end of the p1ston rnd 176 of lts associated motor 168 to thereby prov1de flex1ble connec-t~ons between the p~ston rods 176 and the last~ng strap top segrnents 160a.
Referrlng to F1gures l and 2, a platform 178 is lacated rearwardly of the ~ork suppoPt 6~ and the s1de last1ng mechan~sms 65. A heel last1ng mechanlsm 180, as d1sclosed tn appl1cations Ser1al Nos.223,065 and 236,733 ls mounted to the platform 178. The'heel last1ng mechan1sm 1ncludes a heel clamp 182 and a pa1r of heel w1pers 18i, the heel wlpers 184 be1ng symmetr~-cally d1sposed about the forward-rearward ax1s of the mach1ne and be1ng' located above the heel clamp.
In the 1dle condit1On of the machine: the motor 36 causes the p1ston rod 38 to move upwardly to thereby resil1ently urge the toe rest 42 upwardly under the force of pressur1zed a1r in the motor 36; the p1ston rods 70 are retracted 1nto the motors 68 to thus force the bases 130 1nto outer posit1Ons and ~hus pos1t1On the s1de lasting mechan~sms 65 in outer pos1t1Ons where~n they do not 1nterfere w1th the placement of a shoe assembly on the work suppor 64 as descr1bed below; and the p1ston rods 164 are retracted 1nto the motors 146 dnd the p~ston rods 176 are retracted 1nto the motors 168 thus plac1ng the s~de last1ng 1nstrumental1t1es 138 1n outer pos1t1Ons on the supports 140.

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In the 1dle pos1tions of the side lasting 1nstrumental1t1es 138, the bllck end of each lasting strap 160 ls in approxlmate vertical reg1stry wlth 1ts assoc-1ated p1vot pin 102. ' , .
A shoe assembly ?85 (Figures ll and llb; compr1s1ng a last 188 hav1ng an 1nsole l90 located on 1ts bottom and an upper 192 mounted thereon 1s placed bottom^up on the work support 64 w1th the vamp of the shoe assembly resting on tl~ctoe rest 42 between upstanding toe rest f1anges 194 (f~gure l) and w~th the last pin 20 inserted into the thimble 196 1n the back port1cn of the ?
last so that the toe of the shoe assembly faces forwardly. The hole in the thimble 196 1n which the last p1n 20 is inserted has a greater inner d1ameter than the outer d1ameter of the last p1n to thereby provide play between the last p1n and the shoe assembly 186. The inclined last p1n engages the front of the hole 1n the th1mble 196. Pr10r to placement 1n the mach1ne, the shoe ' ~ssembly 186 had been toe lasted. In F1gures ll and llA, the shoe assembly 1s 111ustrated as be1ng for a left foot and the mach1ne operat1ng cycle , ' descr~bed below w111 be for a left foot shoe assembly., At the start of the machine cycle. the operator causes the motor 58 to be so operated as to retr,act 1ts p1ston rod 6Q and thereby swtng the work support 64 r1ghtw~rdly js seen ~n F1gure' l and counterclockwlse as seen 1n F1gure 4 about the ax~s of the p1vo~ p1n 16 unt11 the w1ng 50 on the left s1de of the mach1ne as seen 1n Figure l, which is the upper w1ng 50 as seen in F1gure 4, engages the cam 52. The cam 52 had been so adjusted 1n forward-rearward d1rections that the periphery of the heel portion 198 of the left foot shoe assembly 186 is symmetrical about the forward-rearward 11ne of symtetry 200 (see Figure 12) of the machine and of the heel w1pers 184 when the w1n9 50 referred to 1n the preceding sentence engtges the cam 52. This sym~etr1cal relationsh1p ensures that the heel wipers 184 w111 effic1ently perform the heel w1p1ng operat10n described below. The ax~s of the pin 16, about wh1ch the work support 64, together with the shoe assembly 186, 1s ' , ' ' . . ' ' ' -, ' .' ' . : ',' . " , ' , '.
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swung by the motor 58 is in approximate coincidence with the heel end extremity o~ the shoe assembl~, thus ensuring that the periphery of the heel portion 198 of the shoe assembly 186 is in the desired symmetrical location when it has completed its swing about the axis of the pin 16 for the left foot shoe assembly as described here and for the right foot assembly as described below.
When the shoe assembly has been brought into the symmetrical relationship re~erred to in the preceding paragraph, the right side shank portion 20Z (the bottom portion as seen in Figure 12) of the shoe assembly 186 diverges away from the line of symmetry 200 as this shank portion extends toewardly from the breast line 204 on the right side of the shoe assembly and the left side shank portion 205 i8 substantially parallel to the line of symmetry 200. At the start of the machine cycle, the motor 90 on the right side o~ the machine as seen in Figure 1 is actuated to project its piston rod 94 rearwardly to there-by swing the associated lug 98 rearwardly about the axis of the associated plvot pin 102 until this lug 98 engages the associated stud 108 and thereby swing the associated side lasting instrumentality 138 about the axis of the associated pivot pin 102, with the associated pin 104 moving in the asYociated 510t 106, to a position wherein the lasting strap 160 of the associated side lasting instrumentality is approximately parallel to the shank portion 202.
Also, at the start of the machine cycle, the motor 90 on the left side of the machine is actuated to retract its piston rod forwardly into this motor 90 to thereby swing the associated lug 98 forwardly about the axis of the associated pivot pin 102 to the extent permitted by this motor 90 and thereby swing the associated side lasting instrumentality 138 about the axis of the associated pivot pin 102, with the associated pin 104 moving in the associated slot 106, to a position wherein the lasting strap 160 of the associated side lasting instrumentality 138 is approximately parallel to the shan~ portion 205 _ g _ :.

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ReEerring to Figures 3 and 4, the bar 22, together with the support 64, is connected to the piston rod 206 oE an air actuated motor 208 that is mounted to the housing 14. A brake plate 210 is connected to the bar ~2 for heightwise movement therewith and is lo~ated between a pair of brake arms 212 that are pivotally mounted on levers 214. The levers 214 are pivoted to the housing 14 by means of pins 216. The back end of one of the levers 214 is pivotally connected to the piston rod of an air actuAted motor 218 and the back end of the other lever 214 is pivotally connected to the cylinder of the motor 218.
In the manner disclosed in application Ser. No. 223,065, the motor 208 0 i9 now actuated to raise the bar 22, together with the support 64, to a posi-tion wherein the insole heel seat portion 220 (Figures 12 and 12A) is located substantially level with the bottoms of the heel wipers 184 in a plane substantially parallel to the plane of movement of the heel wipers 184 as shown in Figures 12 and 12A. After this the motor 218 is actuated to force the brake arms 212 against the brake plate 210 to thereby lock the bar 22 and the support 64 in this position. This is followed by a forward movement of the heel clamp 182 and the wipers 184 forwardly from an lnltial rearward out-of-the-way positlon to the forward working position shown in Figures 12 and 12A whereln the heel clamp engages the heel portion 198 of the shoe assembly 186 and clamps the heel portion of the upper 192 against the last 188 ant wherein the heel wipers 184 are close to but not in engagement with the heel portion of the margin 222 of the upper 192.
At about the same time as the heel clamp 182 and the heel wipers 184 are brought to the Figures 12 and 12A position, the motors 68 are so actuated as to project their piston rods 70 inwardly to thus move the bases 130, together with the side lasting instrumentalities 138, inwardly to positions wherein the rods 82 engage the brackets 78 and push the valve stems 80 to thereby shift the valves 76. As a result, the side lasting instrumentalities 138 are positioned close to but not in engagement with the side of the shoe `,~

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,,, I assembly 186. Due to the sw1nglng of the last1ng 1nstrumentalit1es 138 by the ~otors 90 bout the vertical axes of the p1ns 102, ~h1ch axes are 1n ¦~pproxlmate reg1stry with the back ends o~ the last1ng str~ps 160. the last1ng : straps 160 are now also approximately parallcl to the1r assoc1ated s1de or shan~ port10ns of the shoe assembly 186.
~he sh1fting of the valves 76 so operates the motors 146 and 168, in the manner shown 1n Patent No. s77,10gas to,br1ng the last1ng instrumental1t1es ~! 138 to the Figure 13 poslt10n wt~oYin the lasting straps 160 arc press1ng the side port10ns of the upper 192 aga1nst the side p,ort10ns of the last 188 with /0 the relat1vcly r1gid lasting strap top segmcnts 160~ extendlng upwardly of A the 1nsole 190 and bearing aga1nst the side portions of the upper marg1n 222.
Each'top segment.l60a at th1s t1me 1s folded partway towards the 1nsole 190 under a rcla,t1vely low b'ack up force appl1cd by a motor 168 as shown 1n PatentHo. 977,108to form an acute ingle with the 1nsole and thus fold the s1de . port10ns of the upper margin 222 part'way towards the 1nsole.
~, The shoe asse~bly engag1ng parts are now 1n t:le pos1t10n shown 1n F1gures 12 and 12A w1th the heel clamp 182 presslng the heel port10n o- the upper 192 ,, ~ga1nst the last 188 an~ the s1de last1ng 1nstrumental1t1es 138 press1ng the ~, " slde jortlons of the upper aga1nst the iast, the s~de last1ng 1nstrument~1it1es ,i, ' 2 0 138 be1ng located forwardly of the heel clamp 172 wlth substant1ally no space h,~ between the,rears of the s1de last1ng 1nstrumental1t1es 138 and the fronts of ~" , ~ legs 226 tFlgure 12) of Jhe cllampJ 82. ' Now, 1n th,e man,ner~hu~h~ 1n appl1catlon Ser. No..223,06snozzles 228 , (F19ures l,Z and 13) are caused to travel,rearwardly 1n the corners between the upper margln'222 and the perlphery of the lnsole 190 from the boundarles between the ~lped toe portlon of the upper marglb and the unw1ped s1de port10ns of the upper marg1n to the heel e,nd extrem1ty of the shoo assembly 126 while c _ nt ls extruded fro~ th nozzle- into these corners.' The nozzles 228 trave . -11- , . ' . ` ' , : ., '' '. . '':
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1~4~362 lengthwise of the shoe assembly while being urged outwardly against the upper margln. The cemen~ is extruded from the nozzles during their travel along the insole periphery, the cement being inserted into the angle between the upper margin 222 and the insole 190. The relatively low back-up force exerted against the upper margin 222 by the lasting strap top segments 160a forces the upper margin against the periphery of the insole 190 to create a barrier between the upper margin and the insole that inhibits the creeping o~ the cement between the upper margin and the insole and then between the upper 192 and the sides of the last 188. In addition, the force exerted against the upper margin under the relatively low pressure by the lasting strap top segments 160a into the Figure 13 position enables these top segments to serve as back-up members to limit the extent of outward movement of the nozzles 228 during their travel along the insole periphery.
It is desirable that the upper margins not be folded 90 far towards the lnsole by the top segments 160a as to prevent the nozzles 228 from reaching , . .
lnto the corners between the periphery of the lnsole 190 and the upper mar8in 222 during the travel of the nozzles. In order to prevent this untesirable contition from happening the junctures 224 (Figure 10) between the relatively rigid lasting strap top segments 160a and the relatively flexible remainders of the lasting straps 160 should be located below the upwardly facing bottoms af the insole peripheral portions that are proximate to the lasting straps as shown in Figure 13. In order to accomplish this and to ensure that the lasting straps 160 are facing the shank portions 202 and 205 of the shoe assembly prior to engaging the shoe assembly, the following ad~ustments were made by the operator, in dependence on the particular size and style of shoe sssembly being operated on:
a. The handles 88 were rotated to move the lasting instrumentalities 138 ~orwardly or rearwardly;
b. The handles 120 were rotated to move the lasting instrumentalities along the tracks 110, the center of curvature of the tracks 110 being sub-... .
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After the cement has been applied by the nozzles 228 as set forth above, pressurized air is applied by the motors 168 against the lasting strap top segments 160a under relatively high pressure so as to cause the top segments to move inwardly from the Figure 13 position and down against the insole 190 to cause the clips 162 to wipe or fold the side portions of the upper margin 222 against the insole 190 in side wiping operations and thus bond these portions of the upper margin to the insole by means of the previously applied cement.
During the side wiping operations, the junctures 224 between the relatively rigid top segments 160a and the relatively flexible remainders of the lasting straps 160 should be substantially level with the peripheral portions of the upwardly facing bottom of the insole 190 that are proximate thereto. In order : for this conditlon to take place, during the side wiping operations the lasting strap top segments 160a force the portions of the shoe assembly they engage townwartly against the upwardly directed yieldable force of the motor 36 to thereby force the toe rest downwardly until the junctures 224 are substantially level with their proximate peripheral portions of the insole 190. During this townward movement of the side and toe portions of the shoe assembly 186, the front of the hole in the thimble 196 moves forwardly of the inclined last pin 20 and the planar movement of the insole heel seat portion 220 with respect to the bottoms of the heel wipers 184 i8 inconsequential. The last pin 20 acts as a fulcrum about which the shoe assembly 186 tilts during the side wiping operations, the portion of the shoe assembly located toewardly of the last pin 20 tilting downwardly and the portion of the shoe assembly located heelwardly of the last pin 20 tilting upwardly. As is clear fram Figure 12A, the side lasting instrumentalities are located toewardly of the last pin 20 to enable all of the segments 160a to force their associated portions of the shoe assembly downwardly during their side wiping operations. The clamping 4~362 .essu~e of the heel clamp 182 against the heel portion 198 of the shoe assembly 186 is not great enough to preclude this tilting oF the shoe assembly about the last pin 20.
After the lasting strap top segments 160a have forced the side portlons of the upper margin 222 against the insole 190 for a sufficient length of time as to enable the side portions of the upper margin to be effectively bonded to the insole, the motors 68, 146 and 168 are actuated to return -the side lasting mechanlsrns 65 to their idle positions. This is followed, in the manner disclosed in applications Serial Nos. 223,065 and 236,733, by a movement of the heel wipers 10 184 in a heel wiping stroke wherein the heel wipers 184 move forwardly and inwardly from their Figure 12 and 12A position. During their heel wiping stroke, the heel wipers 184 engage the heel portion of the upper margin 222, that extends from the heel end extremity of the shoe assembly 186 to the rearmost ends of the side ; portions of the upper ~argin 222 that had previously been wiped against and bonded to the insole by the side lasting mechanism 65, and wipe the heel : portion of the upper margin agalnst the insole heel seat portion 220 and bond lt to the insole heel seat portion by means of the previously applled cement.
At or near the ent of the heel wiping stroke the motor 218 is so actuated ag to cause the brake arms 212 to disengage the brake plate 210 and thus unlock the support 64 for heightwise movement. At about the same time, air is introduced unter increased beddin8 pressure to the motor 208 to cause the support 64 to be so forced upwardly as to press the wiped heel portion of the upper margin 222 against the bottoms of the heel wipers 184 to thereby flatten the wiped heel portion of the upper margin and enhance the bond between the heel portion of the upper margin and the insole heel seat portion 220. When this bedding pressure has been applied for a sufficient length of time, the machine parts that have ~ not already done so are returned to their idle positions and the machine cycle j ls completed so that the lasted shoe assembly 186 can be removed from the machine.

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When operating on a right foot shoe asse~bly, the operator causes the motor 58 to be so operated as ~o project its piston rod 60 forwardly of the motor 58 and thereby swing the work support 64 leftwardly as seen in Figure l and clockwise as seen in Figure 4 about the axis of the pivot pin 16 until the wing 50 on the right side of the machine as seen in Figure 1, which is ~he lower wing 50 as seen in Figure 4, engages the cam 52 to thus bring the periphery of the heel portion 198 of the right foot shoe assembly into symmetrical relationship with respect to the heel wipers 184.
When operating on the right foot shoe assembly, the motor 90 on the left side of the machine as seen in Figure 1 is actuated to project its piston rod 94 rearwardly and the motor 90 on the right side of the machine is actuated to project its piston rod forwardly to thereby, in the manner described above, swing the lasting instrumentalities 138 about the axes of the pivot pins 102 to bring the lasting straps 160 to positions wherein they are approximately parallel to their associated side or shank portions of the right foot shoe assembly.
'-ln all other respects, the machine cycle in operating on a right foot shoe assembly i9 identical to the above describet machine cycle for operating on a left foot shoe assembly.
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- ll- 1040 62 There follows a recap1tulatton of the machtne constructlon and operat~on that form the baslc components of this 1nventton. The machlne oper~tes on a selected port10n of the shoe assembly 186 formed of the last 188 having the upper 192 mounted thereon and the 1nsole 190 located on 1ts bottom by wip1ng the correspondtng port10n of the margin of the upper agatnst the corresponding port10n of the tnsole The work support 64 constitutes support means for supporting the shoe assembly bottom-up w~th said margln portlon extend1ng upwardly of satd 1nsole port10n. A lasting strap 160, located outwardly of satd upper portton, has a relat1vely rtgtd top segment 160a and a relattvely flextble rema1nder extending downwardly of the top segment with the top segment and the rematnder be1ng ~otned by a juncture 224. A nozzle 228 ls located upwardly of the shoe assémbly and is mounted for movement tn a cement applytng stroke along the corner between satd margtn portton and the pertphery of satd lnsole portlon. The ~otor 36 constttutes restlte~t means so beartng agatnst at least a part of the support means as to y1eldably urge satd shoe assembly port10n upwardly.
The Inotors 146 and 168 constttute means that are operated, ln the m~nner shown 1n P~tent Ho. j77,~0~to so engage satd upper port10n as to cause the 1ast1ng strap rematnder to press sa1d port10n of the upper 192 agatnst the last 188 ~1th the top segment 160a cxtend1ng upward1y of satd lnsole portton and w1th the ~uncture 224 located below the upwardly fac~ng bottom of satd tnsole portton. The motor 168 constttutes means, operated tn the manner shown tn Patent No. 977,108, to so fold the top segment 160a that tt extends part way towards sa1d tnsole portton. Means shown tn appl1catton Ser. No. 233,065 thereafter effect satd cement applytng stroke and cause the nozzle to dpply cement lnto satd corner durtng the cement applytng stroke. The Inotors 168 ~nd thQ controls therefor shown tn Patent ~o. 977,108constttute means for thereaftQr ~urther foldtng the top segment 160a towards the 1nsole 190 so as I, . . ' ,' ~o cause the top segment to wlpe said margin portion a~ainst said insole portLon in a wiping operation, the resilient means enabling the part of the last 188 that is part of said shoe assembly portion to be depressed during the wiping operation to bring the juncture 224 to the level of the upwardly facing bottom of said insole portion.
In the preferred embodiment of the invention, the selected portion of the shoe assembly is a side portion of the shoe assembly. In this preferred embodiment, heel wiping means, constituted by the heel wipers 184, are located rearwardly of the lasting strip 160 and are mounted for movement from a retract-ed position to an advanced position in a heel wiping stroke. In this preferredembodiment the support means so supports the shoe assembly that the heel portion of the shoe assembly faces the heel wiping means and is located forwardly of the heel wiping means when the heel wiping means i9 in its retracted position whereby the heel wiping stroke causes the heel wiping means to wipe the heel portion of the upper margin against the insole. The support means, in thls :: preferret embodlment, comprises the last pin 20 insertable into the hole in the thimble 196 in the last and the toe rest 42, located forwartly of the last pin, atapted to support the vamp of the shoe assembly 186, the last pin having a smaller outer diameter than the inner diameter of the thimble hole and bein8 located rearwartly of the lasting strap 160. Finally, in this pre~erred embodiment, the resilient means bears against the toe ret 42 to yieldably urge the toe rest upwardly.

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Claims (2)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY OR PRIVILEGE
IS CLAIMED ARE DEFINED AS FOLLOWS:

1. A lasting machine, operable on a selected portion of a shoe assembly formed of a last having an upper mounted thereon and an insole located on its bottom by wiping the corresponding portion of the margin of the upper against the corresponding portion of the insole, comprising: support means for supporting the shoe assembly bottom-up with said margin portion extending upwardly of said insole portion; a lasting strap, located outwardly of said upper portion, having a relatively rigid top segment and a relatively flexible remainder extending downwardly of said top segment, said top segment and said remainder being joined by a juncture; a nozzle located upwardly of the shoe assembly and mounted for movement in a cement applying stroke along the corner between said margin portion and the periphery of said insole portion; resilient means so bearing against at least a part of the support means as to yieldably urge said shoe assembly portion upwardly; means for causing the lasting strap to so engage said upper portion as to cause said lasting strap remainder to press said portion of the upper against the last with said top segment extending upwardly of said insole portion and with said juncture located below the upwardly facing bottom of said insole portion; means for so folding said top segment that it extends part way towards said insole portion; means for thereafter effecting said cement applying stroke and for causing the nozzle to apply cement into said corner during the cement applying stroke; and means for thereafter further folding said top segment towards the insole so as to cause said top segment to wipe said margin portion against said insole portion in a wiping operation, said resilient means enabling the part of the last that is part of said shoe assembly portion to be depressed during said wiping operation to bring the juncture to the level of the upwardly facing bottom of said insole portion.

2. The machine of claim 1 wherein said selected portion of the shoe assembly is a side portion of the shoe assembly; further comprising: heel wiping means located rearwardly of said lasting strap mounted for forward movement from a retracted position to an advanced position in a heel wiping stroke;
wherein said support means so supports the shoe assembly that the heel portion of the shoe assembly faces the heel wiping means and is located forwardly of the heel wiping means when the heel wiping means is in its retracted position whereby the heel wiping stroke causes the heel wiping means to wipe the heel portion of the upper margin against the insole; wherein the support means comprises a last pin insertable into a thimble hole in the last and a toe rest located forwardly of the last pin adapted to support the vamp of the shoe assembly, said last pin having a smaller outer diameter than the inner diameter of the thimble hole and being located rearwardly of said lasting strap; and wherein said resilient means bears against said toe rest to yield-ably urge the toe rest upwardly.