US2609552A - Machine for shaping uppers over lasts - Google Patents

Machine for shaping uppers over lasts Download PDF

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US2609552A
US2609552A US81917A US8191749A US2609552A US 2609552 A US2609552 A US 2609552A US 81917 A US81917 A US 81917A US 8191749 A US8191749 A US 8191749A US 2609552 A US2609552 A US 2609552A
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gripper
toe
machine
grippers
last
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US81917A
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Kestell Thomas Aubrey
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United Shoe Machinery Corp
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United Shoe Machinery Corp
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    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43DMACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D21/00Lasting machines
    • A43D21/16Lasting machines with lasting pincers and toe- or heel-embracing wipers
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43DMACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D21/00Lasting machines
    • A43D21/12Lasting machines with lasting clamps, shoe-shaped clamps, pincers, wipers, stretching straps or the like for forming the toe or heel parts of the last
    • A43D21/125Lasting machines with lasting clamps, shoe-shaped clamps, pincers, wipers, stretching straps or the like for forming the toe or heel parts of the last with a plurality of pincers
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43DMACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D21/00Lasting machines
    • A43D21/18Lasting machines with lasting pincers and straight-acting wipers, also for forming the shank portions of shoes

Description

Sept. 9, 1952 T. A. KEsTELl. 2,609,552
MACHINE FOR sHAPING UPPERs ovER LAsTs Filed March 1v. 1949 4 sheets-sheet 1 F. l v Inuenoh /Lg l Thomas; A. lsell Sept. 9, 1952 T. A. KEsTELl.
MACHINE FOR sHAPING uPPERs ovER LAsTs 4 Sheets-Sheet 2 Filed March 17. 1949 fnueno Thomas/1 Kese By L' @L ww Tlllll Ill Sept. 9, 1952 T. A. Kl-:sTELL MACHINE FOR SHAPING uPPERs OVER LAsTs 4 Sheets-Sheet 5 Filed March 17. 1949 Invenor Thomas A. Kese/Z Sept. 9, 1952 T. A. KESTELL 2,509,552
MACHINE FOR SHAPING UPPERS OVER LAsTs Filed Maron 17. 1949 4 sheets-sheet 4 4 fnveno .Thomas A. Kese/l invention relatesr to machines for' use in x thfe" manufacture of shoes for shaping uppers over lasts,and more particularly to machines having meansfor grippingthe marginal portion of anv upper gona last and for pullingthe upper. Among e its objects, the invention has especially in View' the provision of certain improvementsinmachines known as pulling-'over machines, which are commonly` provided with grippers Vfor gripping. the marginaljportion of the 'upper respectively at the end ofthe toeand vthe sides 'of the 'forepart andv for pulling the upper over the last and alsoiwith means ,for thereafter driving fastening's to r fasten the "upper `inV pullediover condition. The vinven-v tion'is herein shown as applied to a pulling-over machine of thev type exemplified by the disclosure of" United Statesv LettersPatent No. 1,962,250, grantedjron June'12, 1934, on an application of W.' f1. B. Roberts, in which the `shoe occupiesan inclined position with its bottom facing downwardlyand rearwardly, but'the inventionis not' limited to an-organization in'which the shoe is positioned in that particular manner.
Before presenting a shoe to a pulling-over machine it isN a common practice, in the interest of goodshoemak'ing, to apply a preliminary pull to the* toe end of the upper and'thereb'y to tighten the" upper'lengthwise of theA last preparatory to they pull to be applied thereto by the toe gripper inge-the course ofv a cycle of power operations ofA thev machine. For this purpose it is customary 'to""use either hand pincers or bench pincers such as` 'shown in United States Letters Patent No'.
1,139,613, granted on May 18', 1915, on an appli'l cation of P. J. Wentworth'. Thepreliminary pull thus appliedserves, amongother advantages, to'
' upper between the` jaws of *the Vseveral grippers.
1t will be'ev'ident thatpreparation of theupper in the manner above described requires a substantialv amount of time and that ,considerable care andjskill also are required thus" to prepareit and to'hold it in proper position on the last while presenting the shoe tothe 'machine'. The presenty invention accordingly vprovides means associated witlitheftoe gripper for' gripping'y the toe Yend of the ppeafte theshoe has"'be'n presented in has'abeen customary heretofore- In theme tion'herein shown kthe preliminary'pull isrelected-by vfurther movement of theabove=,men-gI Varid combinations of parts', win iiow 15e 'or'l" y f Ti'iomaseiibrey Resten; Leinster England as signorto United Shoe Machinery-Corporatio11,v
Flemington-,"Nxik, 'a corporation of'NeW Jersey [Aiiiijliciiiiqnjluarch ,177, 1949;- sefia No.L 815911 1 InGreat-Britain April 9, 1948 es' claims." (01. iig-10.74) t positionfor 'thefpullingover operationandi fr j applyingY a preliminary pull. tov the, upper hiero" it is gripped bythe toe grippenthusjelimin the need` for such `preparation fof' lthe upp applied by addiiionai toe- "gripperspositiii spectivelyat opposite Tsides ofhthe main toe grip-f' per V'and rli "ving jawsveo arranged as torec'eive the margin ofethetoe encl'of` theupp'i b them without the necessity for anys'p -Y on theoperators part presenting the shoe, the additional grippers being closed and operated to pull'thefupp'er'by a treadle prior te the start 'l oftliecycle efoperations'oithe mchi e. Y e additienallgripper's are moved a `direction!mer nearly-lengthwise of the last than the'main- 'teeVJ` gripper and-*serve to presentthemarg'in ofth f upper betweenthe javi/S, O f the mainftoefgijip in proper'position to be gripped by the latter ift? thestarting'r ofA the machine, Ythe ad'di-tienalri'p-1V 'A persA releasing thelupp'er automatically v'aff-te it4 has thus been gripped. Conveniently, as'Afurt herein `illustrated, the starting' o f the niaelijv tione'd treadle. N
4TheV invention further provides novel gripper'-YY operating and controlling means, herein shown A associated withl the addiiioiiaijto grinders" t i' netf thus limitedin lits applicability. In 4the cen-' struction shown each of thesegrippersg isii'rs'fv closedcn the upper through gripper-closingm anisinand isthereafter operated to pull tlifeup er ley-continued force appliedtol this mechanism in the gripper-closing direction, a device-'5eme f` vided for locking it positively'against' uppl movement until it has thus been clos for then automatically releasing it; Thegrippe' closing mechanism includesa toggle which y straightenedto `close the gripper and is; the eaf broken by further movement in the same;y tion to cause Ythe gripper` toA release the upper; A Straightening. ofthe toggle bein mitd'bv which thereafter releases' it tfpermit s' c ther movement thelof, i As urther'herei mated; the; closing of iijieigjiipper by' the f ening oi theftoggle 'and yits movement he t to'Y pull theV upperv are effected thrpi assojciated' witn'wiiiciiis positif/ineens arranged? to suppiemeiii ine-force of tnesjpriiig'iiearuie of the' gripper-closing,operation to nsurejthe,
stiai'g e'niiig of tiieto'ggiei yThe above. and other features of, the ijiiv including various novel pdtai1s'tficorstu lines and the greater portion of the rest of the machine in broken lines, with parts omitted;
Fig. 1a is a plan view of certain treadles shown in Fig. 1;
Fig. 2 is mainly a plan view, on an enlarged scale, of the additional toe grippers and of parts associated therewith;
Fig. 3 is a view in left-hand side elevation of the structure shown in Fig. 2, illustrating the position of the toe end of a shoe when the shoe is presented to the machine;
Fig, 4 is a front View of a portion of the machine, showing the main toe gripper, the side grippers, the additional toe grippers and a shoe rest with which the machine is provided;
Fig. 5 is a section on the line V-V of FigJB;
'Figs. 6,"7 and 8 are views similar to Fig. 3, on a smaller scale, showing the positions of the parts at different times in the operation of the machine; and Y Fig.` 9 is a view in left-hand side elevation of the main toe gripper and of controlling mechanism associated therewith, parts of this mechanism beingbroken away.
Invview of the disclosures in the previously mentioned Letters Patent No. 1,962,260, and in others, of characteristic features of machines of the type to which the invention is shown as applied, including especially the disclosure in United States Letters Patent No. 1,029,387, granted June 11, 1912 on an application of R. F. McFeely, the machine herein shown will be described in detail only in so far as is necessary for an understandingof the invention. A machine of this type includes a shoe rest 2 (Fig. 4) which, when the machine is organized as shown in Letters Patent No. 1,962,260, is so arranged that the shoe occupies aninclined position in the machine with its bottom facing downwardly and toward the rear of the' machine, the shoe rest including two presser feet 4 which engage the insole at the opposite sides ofy the forepart and another presser foot 6 which engages it near the end of the toe. The upper of the `shoe sov positioned is pulled over the last by a toe gripper 8 which grips and pulls it at the end of the .toe and by opposite side grippers l0 which grip and pull it at the opposite sides of the forepart, respectively. The several grippers thus pull the upper in downwardly and rearwardly inclined of the main toe gripper or with the operations f directions in the rst stage of a cycle of power operations of the machine initiated by depression of a starting treadle l2 (Fig. l), after which the machine comes automatically to a stop with the upper held under tension to permit the operator to inspect the work and to make any necessary adjurstments. Thereafter the operator again depresses' the treadle l2 to initiate'the second stage ofthe cycle of operations during which the margin of the upper is wiped inwardly over the insole and tacks are driven to fasten it in pulled-over position, the grippers releasing the upper. Near the end of this stage of the cycle the parts of the machine are returned to their starting positions.
For purposes of this invention the machine is provided with a pair of additional toe grippers I4 located respectively at opposite sides of the main 4 ditional grippers comprises a relatively xed lower jaw IB extending in a generally horizontal plane and an upper jaw I8 pivotally mounted on a pin 20 on the lower jaw for swinging movements toward and from the latter. As shown in Fig. 4, the upper-engaging face of each lowerjaw,.which is serrated, is arranged to extend in -a somewhat downwardly inclined direction widthwise of the shoe away from the main toe gripper. 'Ihe additional toe grippers are preferably so adjusted, in a manner" hereinafter described, that their lower laws I6 are positioned at substantially the same level as the forwardly extending upper-engaging portion of -a lower'jaw 22 of the main toe gripper 8 when this gripperis properly adjusted lengthwise of the shoe by means with which machines of the type herein shown are provided. The addithough the upper materials are somewhat scantily' tout. It will be understood that the limit of the forward movements of the additional grippers will be adjustably varied in accordance with the scantiness of the upper materials. l
To outline briefly the purpose and the manner of operation of the additional toe grippers, it may be stated at this point that after the operator J has presented a last with an upper loosely assembled thereon to the machine with the marginal portion of the toe end of the upper materials overlying the lower jaws I6 of the additional grippers, he causes these grippers to grip the upper and to4 move rearwardly to apply a yielding pull to the upper in a direction generallylengthwise of the last by depression of a treadle 24 (Fig. l). In this operation the additional grippers present the marginal portion of the upper in position `to be properly gripped by the lower jaw 22 and an upper jaw 26 of the main toe gripper 8. The additional grippers hold the upper until it is gripped by the main toe gripper substantially at the beginning of the cycle of operations ofthe machine, whereupon they are automatically opened and are quickly moved farther rearwardly to positions where theyv do not interfere with the normal upper-pulling action of other instrumentalities of the machine.
To facilitate, the positioning of the marginal portion of the upper materials between the open jaws of the'main toe gripper by the additional toe grippers in the manner above described, the
jaws ofthe main toe gripper are differentin shape from those of the corresponding gripper shown in Letters Patent No. 1,962,260. A.That is, V vthey are so shaped that the upper-gripping faces of the jaws when the gripper is closed extendv in substantially horizontal directions forwardly and rearwardly of the machine. These faces, morein downwardly inclined directions widthwise of the machinev as hereinabove described. It will be evident that this curvature. toe gripper A8k (Figs. 2 andfl) Each of vthese ad- 75 9f the JWS 0f .the main toeglppel and the itlGii-f` nationsvof. the upper-gripping faces ofthe lower I jaws'lofthe additionalgrippers, in view of the natural curvature ofthe marginal portion roffthe toe endof the. upper as it'lies looselycn ,the last when. the work is presented to the machine,
facilitates the presentation of thev upper to the:
grippers by the operator. A portion o f the upper jaw 26 of the main toe gripper at the rear of its serrated upper-engaging'face is hollowed out, as shown at 28 (Fig. 3), toinsure that in any event themargin of the upper materials pulled between the jaws .of the main toe gripper bythe addif tional grippers will not tend `to interfere with the proper closing of they main toe gripper. The serrated upper-engaging faces of the` jaws of the additional grippers may extend, for example,
about half an inch lengthwiseof theupper, and the. rear edges of these faces. vwhen the grippers ar'eclosed maybe spaced about half Van inch forwardly of theV pivot pins 20. Insurance is ythus afforded that these grippers will properly grip, not lonly the outer layer of the upper materials,
but'also any inner layer which may terminate ofthese brackets is such that the additional toe f grippers I4 are about an inch and a half apart with the main toe gripper 8 between them. The two brackets 36 are suitablybolted together in the above-,mentioned spaced relation and are positioned respectively at opposite sides of a central bracket 38 which is secured toa portion of the frame of the machine. v n has an upwardly extending portion provided near its upper end with ribs i9 (Fig..5), one on eachside thereof, which lie in parallel inclined guideways` 42 in the brackets 36. adjustably secured to` the bracket 38 by a bolt 44 anda nut 136 (Fig. 5), the bolt extending These brackets vare Y This central b-racket through inclined slots 158L (Fig. 3) in the brackets f 36 and througha bore inthe bracket38. .The bolt 44 hasA ahead 5 0 lprovided with a vflattened portion which engages a surface on the righthand bracket 36 to prevent the bolt from turn.- ing. The glldeways 42 in the ybrackets`36 and the ribsd) on the bracket38 are so inclined that the brackets 36 may be adjusted relatively to the bracket 38 in forwardly and rearwardly inclined directions each at an angle of approximately-45 to the horizontal.A By such adjustment the lower jaws`l6 of the additional toe grippers are caused to move in paths substantially parallel to the inclination ofthe shoe rest 2 and also approximately parallel to the path of adjustingy movef ment, of they main toe gripper in directions lengthwise`V of the shoev for shoes of Adiierent lengths. persmaybe readily adjusted to occupy similar initial positions relatively to the main toe gripper in its diierent adjusted positions, the adjustment of the' additional grippers being effected by loosening the nut 46, moving the brackets. along the ribs 4E' and" thereafter tightening the nut,` An'upwardly and forwardly extending portion of the bracket 38"(Fig. 1.) supports lat, its front. enda tipgline Lgagingrclevice. 52 withlwhieh; a pulling?,
Accordingly, the' additional toe gripf smemberin vided: f
VThe movable kupper jaws I8 ',Qfa thei iditlnnab toegrippers. which are ,pivotally -molintedson th pins 2l] as hereinbeforedescribed-, are arrangedgv to extend upwardly inftheir fully, openpositions with iheir'serrated upper-engaging faces;.subf-,y This enables the.; operators readilyA lto y-I osi11ior-1 the marginal portion car-the.:k upper in proper relation tothelower jawszlin :Dre senting the-.workfto the frnachiine.;` For- Swingin the Aupper jaws Atoward the flower.,y jawswtozgrip: the Upper, .there arepivotally connected. vtotzhefT upperjaws, ,by :means ofrstudsf 54, front end;por,:. i .i tionsef rod-likeclinkstt. When the upperfiaws: y I8k arein ,fully openypositionspthelinks 56 ex?` tend' downwardly :and rearwardly: as shown in; Fig; 3,the 'rearV end portions ofthe .links belngg.. slidably mountedy in bores 5,8 drilled diamstrically@A through transverse pivot Dns whichare-.roflk tatably mounted in alined bearingsin bifurcatedr v end portions of links 62.1 The-.other Aends'ofthe;l 1 links 62 are' secured to-gear segments564'pivf-- otally mounted for swingingmovements on transf- Springs68 surrounding the links-56 are mounted betweenv thepins 60 and nuts 'I0 ythreadedon the linksf.. Collars 12faston the rear endsof'the links.- 561 prevent these links from moving forwardlylouts.V
stantially vertical.
verse pins-66 secured rto the arms v30.
of the bores 58 in the pins 60 under the action'of theesprings 68.
shown in Fig. 6 the jaws I8 are swung about the pins 28 toward the jaws I6,` the springsA 68 being compressed toan extent depending upon thethickness of the upper materials between theVV upper and lowerA jaws.
TheV gear segments 64 are in-meshwith teeth* cut in the lower faces of smallrack membersfM haVIlgT-Shaped ribs 'I6 (Fig. 2) slidingl-y mounts;
ed in correspondingly shaped guidewaysf 'I8 the slides 3,2.
bars 14, are slide bars 86.
rearwardly extending lugs 84 to whichis pivotally connected by means of a pin 86 'arrearwa'rdly exi" Y" tending link 88 operated as hereinafter describedJV TheA crossbar 82 has end portions projecting widthwise of the machine somewhat 'beyond the slide bars 88 and provided' with pins 96 which serve to anchorA the rearends oftension springs 92, the front endsof these springs being anchored- Y to the rackmembers 'I4-by means of threadedrods 94 extending. Hrearwardly from outturnedlugs 96 on the front ends of ythe rack members; f
The threaded rods 94 extend freelythrough bores` in the lugs 96 and have nuts 98 Vthereon by meanswf `of Which-thetension of the springs 92. canbe-'I- varied, locknuts |60 being provided Vattherear:l of the lugs for holding theV rods; in adjustedf 1' positions. When the parts, are inv their. initial-` y positions, kasv shown in Figs.1f2 andiBp-.theorackf are held` br the. snringsfs 2: wltlritheir 1.a
The links 56 and 62 constitute` jaw-controlling togglesfor closingl and opening the additional toe grippers, thee tOggIesbeingv` broken downwardly, as shown in'Fig. 3, when thel jaws I 8 arein their initial open positions. Whenr l the togglesare straightened to.- the position'sif accepte-2 rear' end faces in abutting relation to the front end faces of the slide bars 8 0, the slide bars being positioned at this time as determined by engagement ofthe crossbar 82 with the rear ends of the slides 32.vv A spring |02 (Fig. l) connected to the above-mentioned link 88' by means hereinafter described tends to move the slide bars 60 inforward directions and, through engagement of the crossbar 82 with the rear ends of the slides 32. also -to move these slides in forward directions. Such forward movement's'of the slides 32 are limited by engagement of stop plates |04 (Fig.-
3) extending downwardly from the rear ends of the slides with a crossbar |06 which extends widthwise of Vthe machine just below thelower edges of the brackets 36 andis secured at its opposite ends to forwardly extending plates |08 adju'stably secured to thebrackets 36 by bolts 0 extending into the brackets through slots ||2 in the plates. Accordingly,`by adjustment of the plates |08 relatively to the brackets 36 the initial positions-of the additional toe grippers with respect to-forward and rearward movements may be .variably determined without varying the height at which they are positioned in the machine. `It will be understood that this adjustment is effected with reference to the scantiness or fullness of theuppers of the shoes on which the machine is to operate. l
The above-mentioned link88 connected to the crossbar 82 is pivotally connected at its rear end (Figi 1) to the upper end of an arm y| I4 which is fast o-n a transverse shaft l I6 rotatably mounted inbrackets IIS, the brackets being secured, one at each side ofthe machine, to a column |20 forming part of the frame of the machine. Also fast on the shaft I6 is an arm |22 pivotally connected to the upper end of a downwardly and forwardly extending rod |24 the lower end portion of which is slidingly mounted in a transverse bore formed in a stud |26 rotatably supported Yon the rear end of an arm |28. This arm is'pivotally mounted on a rod |30 on the frame and is connected by a link` |32 to an upwardly extending arm |34 fast on a shaft |361, this shaft having also fast thereon thev previously mentioned treadle 24. Depression of this treadle, therefore, swings the arm .|28 in` a downward direction against the resistance of a return spring 31, and by the'engagement ofthe stud |26 on the arm with a nut 38 on the lower end of the rod |24 the .rod is moved downwardly against resistance of the spring |02 to impart rearward movement to thecrossbar 82 and .the slide bars 80. As the crossbar 82 is thus moved rearwardly it acts throughrthe springs 92 to move the'rack members 14 alsogin that direction and, `through the action of lthese rack members on the gearA segments 64, to straighten the toggles formed by the links 56r and 62 and thereby to swing the jaws I6V of the additional grippers toward the jaws '|6 to 'y grip the marginal portion of the upper.
Toavoid the necessity of usingunduly strong their front ends to outwardly extending lugs |42 y l Dinsl .gonithe crossbar'82. Threaded on the rear edsof these rods are nutsV |44 which initially are spaced substantial distances rearwardly from the pins 90. Accordingly, when the crossbar is moved rearwardly it acts first through the springs 92 in the manner above described until the toggles 56, 62 have been nearly straightened, lafter vwhich the engagement of the pins with the nuts |44 causes the crossbar to act positively through the rods |40 fully to straighten the toggles.
During the above-described closing of the additional grippers by the rearward movement of the crossbar 82 movements of the slides 32 in rearward directions by the force applied through the springs 92 .are positively prevented. For this .purpose two latch members |46, one on each of the slides 32, are pivotally mounted on shouldered studs |48V on the slides. These latch members have stop' faces |50 arranged to engage stop faces formed on small blocks |52 secured to the plates |08. Tension springs |54 connected to the latch members and to pins |56 on the slides 32 hold the latch members normally in the positions illustrated in Fig. 3 to prevent rearward `movements of the slid-es. It will be evident that since the blocks |52 are secured to the plates |08 which Vare adjustable to Vary the limits of forward movement of the slides 32, they are in positions to cooperate properly with the latch members |46 regardless of such adjustments. For swinging the latch members |46 about the studs |48 to release the slides 32 for rearward movement, there are fast on the gear segments 64 segmentlike plates |58 arranged to engage pins |60 on the latch members and lto swing these members as the above-described jaw-closing toggles arrive in their straightened positions. 'Upon such release of the slides 32 they .are moved rearwardly by the already tensioned springs 92 to cause the additional grippers to pull the upper and to position its margin between the jaws of the main toe gripper 8, the rearward movements of theadditional grippers ceasing when the resistance oiered by the upper materials balances the force of the springs 82. each of the additional grippers is thus operated through the separate spring 92 associated therewith, the grippers may 'be moved different distances depending upon the resistance of the different portions of the upper materials on which they act. To hold the crossbar 82 in its rearmost position after the pull on the upper, even though the operator releases the treadle 24, there is provided a latch |62 pivotally mounted on one of the brackets 36 for swinging movements about a stud |64. This latch has in its rear end portion a recess providing a shoulder |66 for holding engagement with the crossbar.
In order to .prevent the toggles 56, 62 from being broken upwardly beyond their straightened positions in the closing of the gripper jaws I8 on the upper, mechanisms are provided which act through the latches |46, the pins |60 and the segment plates |58 to limit the. turning movements of the gear segments 64 at this time.
These mechanisms include pawls |68 secured on 'I b latches when they are operated bythe segment plates |50 to release the slides 32 (see Fig. 6)
It will be evident that since downward and. rearward directions..
In ithis manner' turning. of thegear `sectors 64' ifisfstopped when the togglesarriveintheir fully A*straightened positions.
To position the last lengthwise"whenfsthework is'presented toithe machine. theilower. jaw 22 of the main toe. gripper 3. has; anabutmentface 16 thereon. for engagement with the toe endof the lastior of the insole. To' prevent the last from -moving .lengthwise ina rearward direction during thepulling of .the .upper by the additional ftoegrippers the .usuali downwardly andrearwardlly extending bar |18 (Fig. 9) .of the maintoe gripper .has thereon. a .member |580 provided with .-arecess |82 to receive 'a roll. |84 mounted on .a `rgripper-controlling armiI86. When the .gripper barzisinits uppermost position, as it is` when the additional grippers pull. theupper, the roll |84. is ivvithinV the .recess ,|82 and the arm I prevents any rearward swingingmovement ofthe mainfftoe gripper. Whenthe bar :IIzis :moved `downwardly to close the gripper on the upper 'and tojpull the upper at the beginning .of the cycle of. operations .of ithetmachine the.. member |80.. is 'carried downwardly' beyond Ythe roll |84.
The .arm |80 corresponds otherwise purpose andfunction to the gripper-controlling. arm` 343 yishown inthe previously mentioned Letters Patent i No.` 1,029,387. It will; therefore be .understoodthat ritz-.is through movements .ofthis arm that the main toe. gripper is `adjusted .inrdirections lengthwise'of. thelasttand iscontrolled with respect .to forward andY rearward .swinging movements in` the :course .of the operation .of the machine.
After the additional 'toe' grippers have .been
operated by the treadle 24 to apply their pull to theupper, the operator; if.' he is'satisfied with the pullingofthe upper by these vgrippers, depresses the treadle I2 to start the power operation of 'the..machine. Conveniently the treadle :2d .has thereon a bar: |31 T(Fig. la) extending over the treadle I2, so thatV the depression of the latter maybe effected by further lmovement of the treadle. 24. If theoperator isnot satisfied with themanner in which the upper has been gripped andpulledbythe additional grippers, hemay,
before 4starting 'the cycle of operations, cause `these grippers to release the upper and to revturn'to their initial positions. For this purpose there is provided a handlever |88 mounted for VVswinging movements on one .of the' brackets 36 'and'arranged to act-throughanarm |530 andV a lirikflilZ to lift thelatch .|52 and .thus to release fthecrossbar 82. It will be understood that when the crossbar is thus released the parts are returned to their :initial positions bythe springs A.92.and |02. Y
. After having pulled the upper and `positioned Ait relatively to ther main toe gripper, the additional toe gripperscontinue .to hold it'untilV the main. toe gripper is closed thereon near the beginning of vthe cycle of operations. As soon as .themain .toe'gripper .has "closed, the additional grippers are opened and are then moved quickly in. arearward direction by vthe springs "92 to out-of-the-way positions while the crossbar.82 isstill'lheldbythe :latch |62, the limits tof such rearward .movements of the additionalv grippers 'being determined by engagement of small plates |94 ontheslides 32with the front end vfaces of the bracketsv 36. For thus automatically causing the additional grippers to open and toy move rear- Awardly 'the inner ends of theV rotatable studs ITB-"have integrally formed thereon smallfingers I9 ofgeneral'ly triangular. shapev which extend'in frame. .is varranged to `be-.engaged by'an abutment-'AIB 'gers lieadjacent tothe inner `faces of the brackets 36, bracketsbeing provided with forwardly :and rearwardly' extending slots through which the .studs I i'I 0 extend and. along which they'move during the rearward movements of the slidesl'32. ..Midway between their opposite ends the studs their front ends on studs=202-projectinginwardly Vfrom the brackets 93B. The inner side; portions of these brackets are provided withV forwardly andzrearwardly :extending recesses to' .provide clearance for the .armsa200 and .for the fngers |95. The .ll-shaped lever-20| ispivotallycon- .nected at its rear'end tov the=upper end of a .downwardly and rearwardly; extending rod .204
yieldingly -connected throughja compression springf205 tor-the Arear end-fof an arm V-2Ili^(Fig.
l.) fast on a shaft 208 which has-also fast thereonfan'arm 2I'0. The -shaft-208is journaledjin extendingf downwardly and rearwardly-f. therefrom, the lower end of thebracket 2 |2be ings ecured toa member2^|4which formsfpartcfsthe The :front .endportion yor. they .arm -2 i 0 extending outwardly from Athe vrear endf ofthe usual --updraw lever-r2|8-connectedto the-bar |18 (Fig. v.il))j.ofj.the. main toe. gripper V8v. .Itf-will be understood that-.the vrear` end :of thisA updraw lever swings downward in operating thefgri-pper tdpullthe upper. `rI'he arrangementwissuchY y that as-this lever 'swings downwardsu-ciently tocause themain toe gripper-tof;closerori-ithc r upper the-abutment 2|6 gimparts -vdownward swinging movement to' the4 arm-2 I0 against-.the :resistance of a return-springiZI'Q; connected-to the arm .205 and, through fthe `mechanism defscribed, .swingsl the arms-f 2007of x:the Uy-shaped :trip.lever '20| upwardly about the: studs 1202. The upper-Ledges oftheearms thereupon-engage the fingers |96, regardless. of the distanceA these .-ngers have been moved in rearward directions during the upper-pulling action' offthe.V addi- .tional-toegrippers, and swing lthe Vlingers-in't1-,1e
directionsto withdraw the pawls g I B8 ,from-1 engagement. with the Vstop f faces |14.- on.- the A.latches |46. This permits IVthe lgear-segmentslflliui'toabe f swung Y still 4farther inl counterclockwisevv Vdirections with reference-to Fig.-3 by the'springs.92, thus causing. thetoggles 56, 62 to. break in upward directions (Fig.) and partially tofopenmthe additional-'grippers I4. Upon such openingsof `vthese grippers they are immediately retracted by Athe springs 92 vto the :positions determined-.by
engagement cf theplatesr 94 withfthebrackets-.
:Near the end of, the. .cycle of operationsjhe latch I 62 is swung-upwardly, by means hereinafter' described, toV release the crossbar 82; whereupon .the spring l|02 (Figi) -by-itsactionpn the rod |24, the arms ,|22 and .I I4 and-theilink 08 imparts forward: movement tov thecrosstbar.
As the crossbar. is .thus moved forwardlyv the slide springs 6% ilo-the @gravare-meramente tee .toggles 56, 62 from the positions shown in Fig. 7 the 'forward movement of the crossbar rst causes the slides 32 and the parts carried thereby'to be moved forwardly to the initial positions determined by engagement of the plates |04 with the crossbar |06. AThereafter the crossbar 82 is moved forward relatively to the slides 32, caus- Y ing the toggles to be swung downwardly and thereby fully to open the additional toe grippers. As the gear segments 64 are thus turned reversely the plates |58 thereon are swung upwardly, thus permitting the springs |54 and |12 to return the latches |46 and the pawls |68 to their initial positions.
For swinging the latch |62 upwardly as above described the latch has extending laterally therefrom a small pin 220,(Fig. 3) arranged to be engaged by a shoulder 222 on a latch-releasing ringer 224 located between the rear end portions v4of the brackets 36 and pivotally mounted on a pin 226 extending transversely from an upper end portion of a link 228. The pin 226 is guided for vertical sliding movements in slots 230 formed in the rear end portions of the brackets 36. The
link 228 extends downwardly and rearwardly (Fig. 1) and is pivotally connected at its lower end to the upper end of a latch-releasinglever 232 rwhich is pivotally mounted between its oplpo'site lends on a pin 234 on the bracket 2|2.
Mounted in the lower end of the lever 232 is a screw 236 adjustably secured to the lever by a locknut. A spring 238 (Fig. 3) connected to `a`rearwardly extending tail portion 246 of the nger 224 and to the link 228 tends to swing the finger in a counterclockwisedirection with Y' reference to Fig. 3 and, when the crossbar 82 is held by the latch |62 in its rearmost position,
holds the finger in a substantially verticalposition against the pin 220 (Fig. 6). Prior to the beginning of the cycle of operations of the machine, however, and during a portion of the cycle the finger is maintained at such a height that its shoulder 222 is above the level of the pin 220, as shown in Figs. 6 and '7. The finger is maintained at this height by engagement of a member 242 (Fig. 1) with the screw 236 on the lever 232. The member 242 is a portion of mechanism ineluded in a machine of the type shown for swinging the wiping and tacking devices inwardly toward the shoe after the pulling of the upper,
yfor releasing the tack drivers to cause them to drive the tacks and for later retracting the drivers and returning the devices to their initial positions. Such mechanism is identiiied as spreader mechanism 120 in United States Letters Patent No. 2,305,535, granted on December l5, 1942 on an application of H. Lane, and the member 242 herein shown corresponds to one of the members 184 shown in said Letters Patent. In the second stage of the cycle of operations of the machine this member is moved in a forwardly and downwardly inclined direction, and near the end of the cycle it is moved reversely toward the rear of the machine and is also swung iirst upwardly "and then downwardly. When the memberY is moved as above described in a forwardly and Vdownwardly inclined direction it disengages the 'screw 236 and thereby releases the lever 232,
lthe pin 226 (Fig. 3) is at the lower ends of the slots 2 30. When the member 242 is thereafter moved reversely toward the rear of the machine and is swung upwardly as above described* near the end of the cycle it is carried to a position where it is again over the screw 236, and in its subsequent downward swinging movement it swings the lever 232 inthe direction to impart upward movement to the nger 224, thusV causing the nger to lift the latch |62 and thereby to release 'the Vcrossbar 82 (Fig. 8). As the crossbar 82 approaches the limit of its forward movement after it has thus been releasedxby the latch |62 a small plate 246 carried by the crossbar and extending forwardly therefrom -between the brackets 35 strikes a pin 248extending from the latch-releasing finger 224 and swings the ringer forwardly to carry its shoulder 222V clear of the pin 220, thus permitting the latch |62 to be swung downwardly Aby gravity into engagement with the crossbar.;82 ready to hold the crossbar when it is moved rearwardly in the operation of the machine on the nextshoe, at which time the link 228 will notv have been moved downwardly to lower the iingen The plate 246 is so arranged that regardless of the initial positions of the slides 32 and the crossbar 82, depending upon the position to which the crossbar |66 has been adjusted, the linger 224 is swung far .enough forwardly by the plate to release the pin 220. `When the crossbar |66 is positioned at or' near the limit of its forward adjusting movement the plate 246, after swinging the iinger 224to the position inwhich it is shown in Fig. 3, rides overl the top of the pin 248, as shown. Whenthe crossbar |06 is positioned farther rearwardly, the movements of the slides 32 and the crossbar 82 may be arrested before the iinger 224has been swung far enough forwardly to permit the plate 246 toride over the pin 248. 1
In pulling-over machines of the typeshown in Letters Patent No. 1,962,260 it has been customary for the toe gripper to close and at least to begin the pulling of the'upper prior` to the closing and pulling action ofthe side gripper-s. Since in the machine herein shown the additional toe grippers apply a lengthwise pull to the upper prior to the closing of the main toe'gripper, it has been found to be unnecessary for the main toe gripper to close and to begin its upperpulling action prior to the closing and pulling actions of the side grippers. For this reason it is preferable to shape the cam which .operates Ythe side grippers in such manner that they grip and pull the upper at substantially the same time as the main toe gripper. The side-gripperoperating cam is, therefore, operative during a greater portion of the cycle than heretofore, and this has rendered less necessary, in operating on some kinds of upper materials, the use of a uid check or dashpot such as shown in United States Letters Patent No. 2,007,973, granted on July 16, 1935, on an application of B. Jorgensen, for retarding the upper-pulling movements of the side grippers.
While the manner inwhich the mechanism provided by the present invention is used and operated will be understood from the foregoing description, it will now be briefly summarized. The operator will, if necessary, adjust the main toe gripper 8 in a direction lengthwise of the shoe, in the manner customary in pulling-over machines of the type shown, in accordance with the size of the shoes on which the machine is to operate. He will also adjust the brackets 36 upwardly or downwardly in the inclined path determined by the ribs 40 on the bracket 38 to posiencaisse 1.'."13 the lower lj aWs |61 of .theradditionalitoegripward or rearward. directionl ofthe cross-bar |06 ,.'andithe plates |553. The extent of thisadiustment will depend upon the degree of scantiness with which the uppers of. the. shoes to be operated :Having made the adjustments above described, =the operator presents a :last having an upper zloosely assembled thereonto themachine, `the r'lasthaving on its bottom face .aninsole which is either loosely .mounted thereon or temporarily secured thereto by one or more tacksV and which .is .presented iny engagement with the shoe restV E.
y Inithus'presentingthe shoe to the machinethe .:operator positions the toe' end ofthe last or thev kedge of the insole thereon against'therabutmentf race |16 on the lower jawf22 of the main toe gripper 3, as shown in Figiand positionsthe marvfgin'al. portionv of the toe-end of the upper matefrials on the horizontal lower jaws I-Goi-theadditional toegrippers I4 and over a portion-of the v lower jaw 22 of thermain toe gripper.
Having thus presented the shoe-to the machine, V-the operator depresses the treadle 24, thus caus- 'ing the additional toe grippers to grip the mar- `gin-'of the v'upper and then to move rearwardly -to'apply-.a -pull to-'the upper lengthwise orf the Vlast in the manner hereinbeiore described, these grippers, in thus pulling the lippen-presenting 4its margin in proper position-between the jaws of the 'main toe gripper (fFigp). Since lthe addi` tional grippers are spacedy a substantial distance *ra-part, they apply their` pull over asubstantial widthwise extent of the upper, as is considered desirable. The additional grippers, after thus pulling the upper, are held by the latch |62 against return movements while maintaining the upper under tension. Ief'the operator is notsatisiie'd with the manner in which the upper is thus jpulled, he liftsV the latch |62 by means of the 'hand lever |88 and'thus causes the'additional grippers, to return to their initial positions and tolrelease the upper preparatory to gripping and pulling ita. second time. Otherwise the operator starts the cycleY oi operations of the machine by further-depressing 'the treadle '24 to Vcause' the bar |81 thereon to depress the starting treadle i2, It will be understood that as the treadle 24 fis *thus f'urther'depressed the tension of 'the springs iiiis somewhat further increased by'rearvwardinox/ement ofA the crossbar beyond'the `positioirinL ywhich 'it is held' by' the latch |62.
"Shortlyafter the starting ofthe cycle of 'operations the main toe gripper 8 and also the side ""grippers In are closed'on Athe upper and fare moved downward in Arearwardly inclined direcltions tojpullv the upper. As the updraw leverY 2|!)` -pawlsff |68n to' lrelease the latches. |46, whereupon thejjaw-'closing toggles 5 6, 62V of' the' additional "toen grippers *are vbroken f in jupward" directions (Fig.v 7) A'bytheV action of the" springs`- 92' to cause Vthesegrippers 1z0-release the upper'andtobe moved farther rearwardlyby Athe springs to out-2 (if-the-wavl positions: TheV main toe`l gripper and Aftl'ieside grippersl 'beginto pull:,'Ltheruppersimullta-i'ieously; but' Ain *accordance with ="the""usual manneriv of apperationf= of -armachineoixftheritype .ushowni the rnainitc'e;gripper moves morerragzpidly, v-.than therrside grippersf-andziin thefcourse (1f-th l fupper--pullingoperation relieves .theiforoe soffrits 5 .cpull.: somewhat 'and then 1 increases :the ."forceszof the pull ,while the.; sidergrippers VAare .fsteadilyrinf frcreasing thez-forcewhichl theyA vapply to'. the .Lup- After-fthe .pull the machine Vcomes llanto- 1 maticai'ly@torni-stop :asusual whilethe'upper':is
i held under tension pato. permit inspectionfrof: the y 'supper V:and fany necessary@adj ustment.. lThere- 'darter-the operator starts'thermachine again'rto fcausel itzto completefathe cycle. In'this'stagezf'of fthe icyclefthej wiping iand tacking :devicesy are '.iffffswiung :inwardly toward the i vshoe `to wipe 1. the
margin :of the' :upper .z inwardly over theains'ole r--andwthestack drivers Vare:thenfoperatedto drive theeupperefastening*'tacks;thesev` operatioiisg-.ffmscurring in. response .tomoy'ement "of thees'preader A`ris :1a part? As hereinbefore"explained, the@ -forward movementof this member. in a` downwardly inclined ldirection releases thelever 232 .andsthus ca-uses the-` latch-releasing ringerv 224 yto bes-low- 25 ered from the position in wl'iichii'it'v isshown'X-r-in Figs; 6 and 'l to a position inwhiohits shoulder -222 is under the pin'220 on'fthe 'latch |62. '.'Ihe spreader mechanism thereafter lis operatedfto move the wiping and tacking devices outwardly to their initial positions and" tov retractthe tack drivers, the member 242 'reengaging they screw 236 on the lever. 232 Vand by its downwardsswinging movement moving 1 the 'finger 224 upwardly Vto lift'the latch |62 (Fig. 8). This causeslthe Y additional toe' grippersto bereturnedmtoftheir -initial positions and openedin the manner' hereinbeforedescribed. Fig. 8 shows the'positions of :the parts when theadditional"toe'grippers lhave been .only partially opened, the.' crossbarzf! 40 not having been movedforwardly'far enough'to cause the'plate-24B (Fig. 3) thereonto swing'rtlie finger 224`from under'theY pin 220"to thermal position in which it is shown in Fig.`3.
If itshould be `desired-for anyv reasonlto o perate the machinewithout the use of the-'advditional toe grippers, these A grippers `may be `moved Arearwardly by the treadle 24'to out-ofthe-way positions and held in such positions byv the -engagement of'a latch 250 (Fig. '1) with a pin 252 on the arm |22, the latch having therethe United States'is:
l. In a machine rfor' shaping uppers' overlasts, a 'shoe vrest for 'positioning' a last withanupper thereon, a toe `gripper having upperigripping faces' arranged to extendgenerally widthwiseof -the last for gripping the toe end ofV theupper and for pulling the upper to tension it lengthwiseof the last positioned by said shoeire'st, additional upper-gripping means having uppergripping faces alsor arranged to extend'generally widthwiseof the last for gripping thetoeendfof the upper,'and mechanism for operating `rsaid additional upper-gripping means to pull the vup- Vper preliminarily lengthwise of'theflast' so"'po sitioned before the upper isgripvped'ibysaid toe v '70` gripper.
lT "of'the last forigripping the-toeendfloffthe upi-ifper sand vror: pulling theV upperj to tension it lengthwise-of the last positioned by said shoe rest, additional upper-gripping means having upper-gripping faces also arranged to extend 'generally widthwiseof the last for gripping the -itoeend of the upper,` and mechanism for oper- 'atingsaid additional upper-gripping means to "apply a' preliminary pull to the upper to tension `it lengthwiseo'f thelast so positioned before the .upper is grippedby said toe gripper, said additional upper-gripping means comprising upperf 'gripping jaws arranged to engage the upper in `locations at opposite sides of the toe gripper.
' 3. Tn ay machine for shaping uppers over lasts, a shoe rest for positioning a last with an upper thereon, a toe gripper for gripping the upper at the end ofthe toe and for pulling the upper to i tension it Ylengthwise of the last positioned by s'aid'shoev rest, additional 'grippers arranged respectively Vat opposite sides of said toe gripper,I and means for operating said additional grippers to. grip the toe' end of the upper and to apply 'a preliminary pull thereto to tension the upper lengthwise of the last before it is gripped by the toe gripper.
' .4. Inra machine for shaping uppers over lasts, a shoe rest for positioning a last with an upper fthereon, a toe gripper having upper-gripping 1 facesiarrang'ed to extend generally widthwise of thelast forgripping'the toe endof the upper, Vsaid toe-gripper being mounted `for movement in a predetermined direction t'o pull the upper and "thereby totension it` lengthwise of the last positionedby said shoe rest, additional upper-grip- 4ping means having upper-grippingiaces also arranged to extend generally widthwise of the Alast for gripping the toe end of the upper, said ladditional upper-'gripping means being mounted for-upperpulling movement in a direction diierent from that of the movement of the toe gripvper and mechanism for thus moving said adf ditional upper-gripping means to apply a preliminary pull to the upper to tension it lengthwise -of the last positioned by said shoe rest before the'upper isfgripped by the toe gripper.
5. In a machine for shapinguppers over lasts, a shoe rest for positioning a last with an upper thereon -at such' an inclination that the bot- 'tom of theA last faces downwardly and rearward- .lyfa toe-gripper having upper-gripping faces arranged to extend generally widthwise of the last for gripping the toe end of the upper,l said toe-gripper being-mounted for movementin a downwardly and rearwardlyinclined direction to pull the upper and thereby to tension it lengthwise of the last-positioned by said shoe rest, AandadditionalA means having upper-gripping-faces alsoarranged -to extend generally Vwidthwise of the last for gripping the toe end of. the upper, said additional means comprising upper-gripping ljaws arranged toV engage the @upper in locations at opposite sides-of the toe `gripper and -mounted for movement -rearwardly in I a substantially horizontal. direction for applying a preliminary pull to the upper to tension it lengthwise of the last. before the upper is gripped by the toe gripper.
l' end-of the toe and mounted for movement in a downwardly and. rearwardly inclined direction .to pull' the upper and thereby. to wtension Ait 16 lengthwise of the last'l positioned by said shoe rest, additional grippers arranged respectively at opposite sides of said toe gripper for gripping the toe end of the upper, and means for moving said additional grippers rearwardly in a direction diierent from that of the movement of the toe gripper for applying a preliminary pull to the upper to tension it lengthwise of the last before it is gripped by the toe gripper.
7. In a machine for shaping uppers over lasts, a shoe rest| for positioning a last with an upper thereon, a toe gripper for gripping the toe end of the upper and for pulling the upper to tension it lengthwise of the last positioned by said `shoe rest in the course of a cycle of power operations of the machine, additional means for gripping the toe end of the upper, and mechanism for operating said additional upper-gripping means to tension the upper preliminarily lengthwise of the last and to position it relatively to said toe gripper prior to the starting of the cycle of operations.
8. In a machine for shaping uppers over lasts, a shoe rest for positioning a last with an upper thereon, a toe gripper for gripping the upper at the end of the toe and for pulling the upper to tension it lengthwise of the last positioned by said shoe rest in the course of a cycle of power operations of the machine, and additional grippers arranged respectively at opposite sides of said toe gripper and movable by the operator for gripping the toe end of the upper and for applying a, preliminary pull thereto to tension the upper lengthwise of the last and to position it relatively to said toe gripper prior to the starting of the cycle of operations.
9. In a machine for shaping uppers over lasts, a shoe rest for positioning a last with an upper thereon, a toe gripper for gripping the toe end of the upper and for pulling the upper to tension it lengthwise of the last positioned by said shoe rest in the course of a cycle of power operations of the machine, additional upper-gripping means for applying a preliminary pull to the upper at its toe end prior to the starting of the cycle of operations to position it relatively to said toe gripper and for maintaining the pull thus applied until after the starting of the cycle, and mechanism for causing said additional upper-gripping means to release the upper at a predetermined time in the cycle after the gripping of the upper by the toe gripper.
10. In a machine for shaping uppers over lasts. .a'shoe rest for positioning a last with an upper thereon, a toe gripper for gripping the toe end of the upper and for pulling the upper to tension it lengthwise of the last positioned by said n shoe rest in the course of a cycle of power operations .of themachine, additional upper-gripping vmeans movable by the operator prior to the starting of the cycle of operations for applying a preliminary pull to the upper at its toe end to position it relatively to said toe gripper, mechanism for locking said additional means to maintain the Apull on the upper, and mechanism for causing `said additional means to release the upper at a predetermined time in the cycle of operations after the gripping of the upper by the toe gripper.
`1l. In a machine for shaping uppers over lasts, a toe gripper lhaving jawsfor gripping the toe Aend-.of anupper 'on a last and for pulling the pu11 the, upper preliminerily lengthwise. 0i the' -.la,st and :to present it 'inproper position-between the Vjaws of said; the upper. .y I
i v12. lIna machineforshapingf-uppersoverlasts, af--toe gripperghav-inggjaws for gripping the toe end toe gripper beforenthey grip i of an upper on ia lastand for pulling the upper ito 4tension it lengthwise of the .last :in the course of a cycle of power operations .of themachiney additional uppen-grippingmeans for also griplgpingthe toefend-of the upperfand-forjpulling vthe upper fpreliminarilyr--to tension rit lengthwise of the -las't andv topresent it vin proper ,position between the jaws of said toegrpper 'before they grip theupper, andmeansmovable by the operator thus to operate said additional upper-gripping means priortothe Ys tartingofthe cycle of operations' 13. -In a'machine for'shapin'g uppersoverlasts,
a toe gripper for grippingithe'itoe lend lof van upper on razlast :and for `pulling."the upper to tension it lengthwise of the last in the course of a cycle of ,power operations of the machine, addiv.tional upper-gripping means fforgripping the toe .end of the upper'and fcrlapp'lying a preliminary .pull theretoto tension'the 'upper lengthwise of the last and to position 'it vrelatively tosaidltoc ygripper prior t thestartingof the cycle of operations, anda treadle for'thusoperatingsaid adto to tension the upper lengthwise of the last and to position it relatively to said toe gripper prior to the starting of the cycle of operations, and another treadle for thus operating said additional upper-gripping means and for thereafter by further movement operating said rst-named treadle to start the cycle.
15. In a machine for shaping uppers over lasts, a gripper for gripping an upper on a last, a gripper carrier supporting said gripper and movable to cause it to pull the upper, mechanism on said gripper carrier for closing the gripper on the upper, means for operating said mechanism thus to close the gripper and for thereafter moving the gripper carrier to pull the upper by continued force applied to said mechanism in the gripperclosing direction, a device for positively locking the gripper carrier against such movement until the gripper is substantially closed, and a member movable into engagement with said device to release 4the gripper carrier.
16. In a machine for shaping uppers over lasts, a gripper for gripping an upper on a last, a
' gripper carrier supporting said gripper and movable to cause it to pull the upper, mechanism on said gripper carrier for closing the gripper on the upper, means for operating said mechanism thus to close the gripper and for thereafter moving the gripper carrier to pull the upper by continued force applied to said mechanism in the gripper-closing direction, a device for positively locking the gripper carrier against such movement during the closing of the gripper, and means movable by the gripper-closing mechanism to unlockY thecarrier when the ,gripper issubstantially y .'closed.
.17; amachine yforshapinguppers over lasts, aflpper for grip-pingen upperon alast, agripper-carrier supporting vsaid gripper `and .movable tcause rittopull the upper, mechanism on said gripper carrier for Yclosing the gripper on the upper, said mechanism-vincluding fa rotatable .geanmember and a rack bar -foroperati-ng said gmember, means ior operating said rackr bar to close the grh'iper'landj for thereafter Amoving the Ygripper `carrier Lto pullthe lupper by continued forceapplied jto the rack bar in the gripper- -closing direction, anda device for locking the gripper carrieragainst such movement until the gripper -is substantially closed and for thengautomatically releasing it to permit its movement.
'gripper carrier Afo1 closing fthe-gripperV on ,the
fupper, said mechanism `including a-Y rotatable Y gear member fend a reckbarfQr ,Operating seid member, means Ifor Aoperating Ysaid rack bar to VHclose the gripperand for thereafter moving the gripper carrier ,to :pull the upper .by continued .force applied vto-the rack, bari-in the ygripper-closing direction, a ...latch for .holding -the gripper rcarrier'against .such movement during the .clos- Aing' .of thegripper, andmeans onsaidlmotatable gear member'for operating said latch to release vthe carrier when the ,gripper is substantially closed.`
19. In a machine for shaping uppers over lasts, a gripper for gripping an upper on a last, a gripper carrier supporting said gripper and movable t0 cause it to pull the upper, mechanism on said gripper carrier for closing the gripper on the upper, means including a spring for operating said mechanism thus to close the gripper and for thereafter moving the gripper carrier to pull the upper by continued force applied to said mechanism in the gripper-closing direction, and a device for holding the gripper carrier against such movement by the spring during the closing of the gripper, said device being arranged to be operated by the gripper-closing mechanism to release the carrier when'the gripper is substantially closed.
20. In a machine for shaping uppers over lasts,V a gripper for gripping an upper on a last and for pulling the upper, a toggle arranged to be straightened to close the gripper on the upper,
a spring yieldable to permit the full straightening of the toggle, and means for thus straightening the toggle and for thereafter breaking it by further movement thereof in the same direction to cause the gripper to release the upper after the pull.
v2l. In a machine for shaping uppers over lasts, a gripper for gripping an upper on a last and for pulling the upper, a toggle arranged to be straightened to close thefgripper on the upper, means for thus straightening the toggle and for thereafter breaking it by further movement thereof in the same direction to cause the gripper to release the upper after the pull, and a device arranged to act as a stop to limit the straightening of the toggle and thereafter to release it to permit it thus to be broken.
22. In a machine for shaping uppers over lasts, a gripper for gripping an upper on a last and for pulling the upper, a toggle arranged to be straightened to close the gripper on the upper,
19 means including a spring for thus straightening the toggle and for thereafter breaking it by further movement thereof in the same direction to cause the gripper to release the upper after the pull, and a device for limiting the straightening of the toggle under the iniiuence of the spring and for thereafter releasing it to cause it thus to be broken by the spring.
23. In a machine for shaping uppers over lasts, a gripper for gripping an upper on a last, mechanism for closing said gripper on the upper, means including a spring for operating said mechanism yieldingly to close the gripper, and additional positive means arranged to supplement the force of said spring in operating said mechanism near the end of the gripper-closing operation.
24'. In a machine for shaping uppers over lasts, a gripper for gripping an upper on a last, mechanism for closing said gripper on the upper, a movable operating member, a spring for transmitting force yieldingly from said member to said mechanism for closing the gripper, and additional means for transmitting force positively from said member to the gripper-closing mechanism to supplement the action of said spring near the end of the gripper-closing operation.
25. In a machine for shaping uppers over lasts, a gripper for gripping an upper on a last, mechanism for closing said gripper on the upper, a movable operating member, a spring for transmitting force yieldingly from said member to said mechanism for closing the gripper, and a rod arranged to be operated by said member only 'nearr the end of the' gripper-closing operation to l THOMAS AUBREYKKESTEVLL.
REFERENCES `CITED The following references areof record in the iile of this patent:
UNITED STATES PATENTS Number Name Date 1,006,821. Bates Oct. 24, 1911 1,123,662 Bennion Jan. 5, 1915 1,687,824 Y Bodle et al. Oct. 16, 1928 2,222,212 'Lancaster Nov. 19, 1940 2,377,887 Jorgensen June 12, 1945 2,423,454 Jorgensen July 8, 1941 2,432,165 Lawson Dec. 9, 1947 FOREIGN PATENTS Number Country Date 12,123 Great Britain of 1911
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US2735117A (en) * 1956-02-21 p courchene etal
US2756445A (en) * 1952-02-26 1956-07-31 United Shoe Machinery Corp Machines for shaping toe portions of stitchdown shoes

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GB191112123A (en) * 1910-11-17 1911-12-07 Anton Stein Improved Pincers particularly adapted for use in the Manufacture of Boots and Shoes.
US1123662A (en) * 1912-08-03 1915-01-05 United Shoe Machinery Ab Pulling-over machine.
US1687824A (en) * 1925-07-01 1928-10-16 Goodrich Co B F Lasting machine
US2222212A (en) * 1939-06-17 1940-11-19 United Shoe Machinery Corp Shaping uppers over lasts
US2377887A (en) * 1943-04-24 1945-06-12 United Shoe Machinery Corp Lasting machine
US2423454A (en) * 1945-06-26 1947-07-08 United Shoe Machinery Corp Lasting machine
US2432165A (en) * 1945-03-14 1947-12-09 United Shoe Machinery Corp Shoe lasting machine

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US1006821A (en) * 1904-02-23 1911-10-24 United Shoe Machinery Ab Pulling-over machine.
GB191112123A (en) * 1910-11-17 1911-12-07 Anton Stein Improved Pincers particularly adapted for use in the Manufacture of Boots and Shoes.
US1123662A (en) * 1912-08-03 1915-01-05 United Shoe Machinery Ab Pulling-over machine.
US1687824A (en) * 1925-07-01 1928-10-16 Goodrich Co B F Lasting machine
US2222212A (en) * 1939-06-17 1940-11-19 United Shoe Machinery Corp Shaping uppers over lasts
US2377887A (en) * 1943-04-24 1945-06-12 United Shoe Machinery Corp Lasting machine
US2432165A (en) * 1945-03-14 1947-12-09 United Shoe Machinery Corp Shoe lasting machine
US2423454A (en) * 1945-06-26 1947-07-08 United Shoe Machinery Corp Lasting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735117A (en) * 1956-02-21 p courchene etal
US2756445A (en) * 1952-02-26 1956-07-31 United Shoe Machinery Corp Machines for shaping toe portions of stitchdown shoes

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