US1996103A - Machine for shaping uppers over lasts - Google Patents

Description

April 2, 1935. H. E. ELLIOTT ET AL MACHINE FOR SHAPING UPPERS OVER LASTS' Filed May 1, 1954 2 Sheets-Sheet 1 April 2, 1935.

H. E. ELLIOTT El AL MACHINE FOR SHAPING UPPERS OVER LASTS Filed May 1, 1934 2 Sheets-Sheet 2 f w w m H v x L m l v 8 H F d m M Q N nub ummm m if 4 W T No W Patented Apr. '2, 1935 porationfo New'lerseyj I Application:

This --invention relates to machines fof use in the manufacture of shoes-for shaping-tippers over lasts'; and-is herein illustrated as applied' to a f machine for pulling over theuppers of'stitchdown 'i lshoespthe 'machine shownbeingone of the salnea'lVIay :1 1934; Serial" a In Great Britain" general type' 'as di'solosed in Letters "Patent No; 1,813,983L'granted-on July 14," 19'31 upon;an;ap

plie'ation'of ArthurBaEtesb It is' to beiunderstood,

however; that "in various aspeets the invention is not limited to maehin'es' of the illustrated type nor to machines=foroperating -on-"sho'es* of that particular character;

A-mach-ine"organized as dis mentioned Letters Patent'is Yp'rfovided with'a pair of side grippers forpuliing theupper-transversely per for subjecting the upper to-long'itudina-l tension. A'n 'obj ect of the" present invention," among others," is to provide improved upper pulli-ng a column 12," the casting l0 'being substantiallyf -means suchas to afiord 'incr'eased insurance that the upper }will be' satisfaetorilj' tensioned i-longitudinall-y under all conditidnstr and fto? this end the machinehereinshown'-has novel-means whereby the toe gripper is operated' topull the, upperindependently' of the' 'side grippers; As"- illustratedi the'jpullingmovementof the toe grip per I required" 'to' stretch and shape the upper properly is effected by a spring-to "the action of which the toe-gripper is releasedi-the side *grip -pers being operated by other means to'f which movement is imparted-througha clutch; The

construction shown is further-such that the toe gripperis released-to the a ctioh of its"springf1: y a member which thr'ough iurther movement serves toactuate-the clutch and thereby to start in operation-the means that' operates the side :grippersj Accordingly, the upper is first pulled tightly aboutthe heel end of the last' and'is sub lol: n 9) v shownin section; and osed inthe aboveing difierentfpaths of movement of the toel g'ri I H .per under different conditions of adjustment over tlie forepait of the last and -with aitoe grip-i Nopvzaez s gust 3051-1933 reference to the accompanying pointed-'outin the claims.

mthecirawings, a Fig. 1 is a view in right-hand side elevation *ofa drawingsand;

machine in whi'oh th'e invention is emb'OdiedQthe side g 'rippers-and certain-other portions of the structure'being broken away; 2 is a. view on a-larger scale showing the side grippers and other parts associated therewith infrear *ele'vationand illustrating how the-I 19 grippers pull an upper over a last parts F1gs .-s}an4 are diagrammatic views .ilhistratf In general similarity to the disclosure .of lt "above mentionjed Letters Patent, "the? machineff herein 'shown' has a head casting l U mounted on U -shaped having vertically upstanding por {Supported onthecrossbar l6 is a'sleelve" l flf'hav j jing ears EBFCFig. 2) projecting from-its",opposite j the upper is pulled. is supportedjbottomhown j ward, 'as' more particularly hereinafter described 1 on a worl; support 'memberi zd which unlilze jth construction shown in theipreviouslv mentioned Letters Patent, is mounted'in a. fixed position on;

I thejhead casting lil'andis stationary throughout sides,i-and-pivotally mounted at Zlgon theseearsf are members-22 having upper and lower'po'rtionsg 'bored to 'serveas'guides fora'pair of side grippers arranged to "grip and pull the upper atrthe oppo' site'sidesof ,the fore'part, The las'tpover which 1,;

the-l operation of the machine. The side grippers, i 35 as shown in Fig. 2; have innerjaws'ifi' mounted rigidly on the upperends of hollow shanlsmem-Q ber s"28"whichare arranged to slide downwardly if jected to 'thefdesired long-i'tlidinal tension by the it widthwise and pull it tightly over the for'epart of the-"last. ln aceordanc'e with afuither feature toe gripper,- after which the' side grippers'stretch of the "invention, the machine herein shown is V providediadditionally with 'means for varying the 45 pathsof movement: of thetoeygripper soythat in a component of rmovernent either' forwardly or rearwardlylengthwise of t'he last to' adaptit better for operationion' different kinds bt work, as

including 'means: whereby the itoe 4 gripper may be further controlled bythebperatornand v'arious 5.3 parts -.:will now 'be'more.:particularly deseribed by a and upwardlyin the guidei'portions of the mem-% 4 4. 1

tions lengthwise of'the shoe alongithe' cross-bar l5 by a hand screw 36 (Fig. 1) and mayalsqbej i screw 38" (Fig. 2)' in the samefmanrier as in r the" prior ma'chine. The side' grippers' are' operatedif novel details of construction andicombinationsof bers22; and have alsofouter jaws 30 pivoted to' I the jaws 26' and connecte'd by links32 to stems 3 421 slidingly mounted in the hollowshank member 1 I I 23 for imparting upper gripping and releasing] movements to thejaws 3B. Springs 35 connected at their lower ends tothe shank members 2 8'and. its "movementaheightwise 'of the last-"it may em at their upperends of the guide'membe'rs' 22 hold the grippers initiallyTin their uppermost posi tions. The side grippers may beiadjusted in direce adjusted toward or from 1 each 'otherffby a hand to grip and 'pullthe upper thro ughlinks -ownmn a p, connect-.tl1e-lowerjends er the stems'3ltoafsub- 5? between itsopposite ends on a bar 44. This bar is fast on the head 46 of a cylindrical stem 48 which is guidedfor vertical movements in a bore v 42 is. mounted to turn in a vertical plane on the bar 44' to enable'the operator to move the side" grippers relatively to each other while they are holding the upper under tension; as in the prior machine. 1

I The toe gripper of the machine -herein sl' o'wn; also comprises an inner jaw 26 and an outer jaw. '38 pivoted to the inner..-jaw and1 controlled by- :links :32, the links in this. instance being con-- V nected to acentral stem 50"which isconnectedat; v.its lower end to a spring-operatedlever 52 :where bythe jaw 88 is operated to, grip theupperand the gripper is moved downwardly toj pull the] .upper, as more particularly hereinafter described. The jaw 26 is fast on ashank member 54 which is- -controlled by a swinging link 56 pivotally con- .aio

in the head casting I II andis operatedashereinafter described. It will be understood'thatwhen V the head 461s carried downwardly the grippei" jaws 38 are first closed upon the'upper by downward movements of the stems-34, after which both pairs of. jaws are moved downwardly with the shank members .28jagainstfthe resistance of the springs to pull the upper. In' these movements of the side grippers they may turn in .their guides I 22; such turning movements, being-limited by engagement of studs 49 in the guides with flat faces.

(not shown) on the shank membersv 28. The lever nected at one end to the shank member: and ad- I :of the jaws maybe varied,. as illustrated ,dia-

grammatically in Figs. 3 and '4. If the outer end justable :atSits other end along-an arcuate slot; 58 formedin'abracketiill fast on the cross-bar I6. Springs 62, oneonly of whichisfshown, are connected to the shank member 54 and'yield toperl mit this member toibe carried downwardly with the jaws to pull the upper bytlieoperation ofthe 'lever' .52 after the gripping of the upper by the initial' downward movement of the stem 58 .rela-t I tively to the shank'meniber. 7 It will be understood that when the gripper is operated to pull the upper thepath of .movement of its. jawsis determined by the swinging link 56, and by adjustment of the outer end of this link along theslot 58 the path .01 the link is set at the upper end, of the slot 58,

so that the link initially is substantially'horiZon V tal, as ,jillustratedin Figs. 1 and '3, the gripper:

jaws will.move,1in-pullin'g the upper, from the point a: tothje point y'along a path indicatedby the brokenline in Fig. 3,'so that the jaws as they imovedownwardly'have a component of movement lengthwise of the last in'a forward direction with respect to thelast; or toward the-rear of the machineJffI 'his is the setting preferably? used, for example, when the uppers'are comparatively flex ible or stretchy and areso'icut that. they are not unduly short or scant? If, on the other hand;

theouter end of the link is set at thelower end of l the slot 58, thejaws will move from the point a:

to the point z (Fig. 4) with a component of mo;ve--

mentlengthwise of theriast in theiopposite direction,li. 'e'.',' toward the frontofthe machine.

This often produces better .results'in the shaping of thetoe ends of the uppers when they areicom- What scant.

to the arm 88.

parativelystifiand, it maybe, also are cut some- 'l'he jlever 52, which operates the toe gripper is fast on arod 64 which isniounted to turn in a bearing the bracket-60. The lever is operated by aI'spring 66i 0nn ected at itslowere'nd to the f lever and at its upper end to ahook 68. slid-r.

' stantially horizontal lever 42. mounted midway 'ingly' mounted a lug 18 on the bracket lifl.

Threaded on theshank of the hook 68 is a wing 16- on-a armof the ,head'casting I0 and conthereof a plate "I8arranged toengage a shoulder ,88 formedjonf a*1atc h]82 which is pivoted at 84' "On the lever 52. By engagement of the plate 18 with-the. shoulder 88 the lever 52'is accordingly For this purpose Fhe'ld mas-111mm position.- For releasing the lever 52 and thereby lrendering the spring 66'feifective, q to close andoperate the toe gripper, there is pro I V-vided means for-lifting the'latch 82 to disconnect .;it from; the; plate I8. This-.meansjcomptises a pawl .88 pivotaliy suspended at its 'upperendon an i arm 88. which is mounted to .turn onjthe rod -64,

the pawl engagi inla' notch therein, the lower face of a lug 98 on ,thelatch-M. v Itwill be under-v stood that, the flatchlis lifted ,to release the lever r I ;52 by upward movement ofthe arm88 and the,

pawl 86. Such upwardmovement ofthe arm and" {the pawl iseifectedby depression of atreadle il i f fwhich is pivoted-at 94 onlthe base of the colu n'x au I2' and is connected at its rear end by arod' 96 treadle 92 returns it tots initial is relea sed by the operator.

t For operating the-bell-crank lever to return the lever 52 toiits. initial positionand thereby I "to raise the toe gripper andopenits jaws, and for also operating the sidegrippers to'pull the upper,. the machine: is provided with power-driven "means. Thismeanscomprisesa power shaft I80" A spring-88 connected to-the; ,7

position when it whieh may: be driven, .for example, from, a belt pulley: I82; and a clutcl'i llllv arranged to be actu--- I ated to connect the shaft {88110 a g r wheel I86 Thecons truction of theclutchis not shownin detailfisince any suitable], one-revolution clutch, such as oneof thelHorton type, may be utilized. a

The gearfwhe'el I86 is in mesh} with another gear. wheel] 88 fast on a shaft II Ii, this gear wheel hav-q in'g twice as'many teeth as the gear wheelIiI6 so thatthe shaft'llli turned throughfhali a revolution by each revolution of the' gear wheel I06'.- Fast on the shaft l Iliis an eccentric i I2 having t er e an- I I. w i h vo e lr .connected at itsupperend to a. floating lever" II 5* substantially: midway between the opposite ends of the lever. 1 The lever-H6 isfconnect'ed at its frontendby a'link III! to thejlowerenduof y a the stem 48. throughwhich the side'grippers arey Y operated; and at its. rear endthelever is pivotallyconnected to the rearendbf a 1ink5I20the front;

end :of which is pivoted at I22 onthe columnv I2. 1:- At its, rearend the floating lever, I-IFfurther I26 projecting downwardly" from a member I 28 pivotally suspended on the rear end 1 of I the lever,

1 controlled by-fi spring;I24 which-surrounds a rod 7 I28 and at itslower end ;on a member I30 sup ported on the rear end of a lever I32 'which'jis' pivotedon thecolunm12. The member I-38,i through which the rod' I26 extends, is threadedin 'a-col1ar I33 which is .pivotallymoun'ted on the:

i v The lever I32 is arranged to be held adjustably in a fixed posi- V forked endofthe lever I3'2.

tion by a' pawl member I34'pivotally mounted on the lever, and having thereon a plurality'ofteeth i I the spring bearing at its'upper end on themember reeegros I3fiznnerorfianotherrof :which isl'arranged' to beiengaged by apixr; k381onbthe column;l2. It fwillathus be evident that by :a'djustment off the: lever .I32 the initial "compression ;or the. spring-J2 4 a maybe varied. a When the 'fioating lever' H6: isxmoved downwardly by the turning" of the eccentric I I I2, downward movement iszimpartedzzthereby'rto;the stem-=48 through which the side grippers are noperated to:grip and to:pu1l thezupper in the manner hereinbefore described. When the resistance of the upper to the pull of the grippers becomes greatenough, therear end of the'floating lever H6 is ;carried downwardly against the resistance Ofthespring I24 so that theupper is sub'jectedto a yielding pull :thejforce of kwhich'may be-varied byadjust-ment ofwthe compress-ion ofwthe spring as :a-bove described. "It will be understood ,fthat by: turningthe member -I against --which the J lower end of the spring I241 abuts aifineradjustment of the compression ofsthespring-maybe effected than is-provided-for by the teeth I 36- and thetpin-I38. V

The vbellcrank lever? which controls the :toe gripper lever 52 is itself I controlledby the floating lever. I I6 through avlink I4II connected at itsupper end to a downwardly and .rearwardly 4 extending arm oftthe'bell-crank lever and at its lower end to thefloating-leverl I6 subst antially midway between the opposite ends of this lever-and immediately above the connection" of v the leverto the-eccentric strap- I-I4. When the floating lever II 6 is moved downwardly to I operate the side grippers in themanner above described; it acv plateJB rbeyondethe shoulder 80 on the latch 82. 7 When the 1 lever I I 6 is thereafterimovedlupwardly to return" the s-ide'grippers totheir starting positions, the upwardly extendingarm'of the bellcrank lever 14 is swung tothe left andacts through ithe latch 32 toswing the lever'52against the resistance- 0f the spring '66 andthus to return the toe gripper'toits starting position and to. open thegripper'jaws. a. m m

i (ThecIutch I04 is actuated to stop the gear wheel- I-IIBi-atthe end of each complete revolution armed. leverrlg42 onearm of which is arranged to engage a shoulder on'a clutch ring 144 .The' clutch isactuated to start the .power operation of the Imachine by swinging the lever I42 ina, clockwise-direction so as to release, theclutch;

ring Ii44,iandwfor this purpose there is provided angupwardly extending rod I46 having thereon a plate 'I48.arrangedto engage a plate "I50 "on one arm of "the lever I42. At its lower end the rodI4B is connected to the'rear arm of aiever, I52 mounted on the same pivot'94' as thetr'eadle t'oe gifipper 'lever52' has been released to the action of its spring '66. For this purpose a pro jection-I 58- on the treadle 92 extends into a -slot. ISO in the forward end of the lever I52,' -thi's slot permitting 'sufiicient depression'of the treadle "to release the toe gripper lever-52 before the treadle becomeseffectiveto trip the clutchthrough its movementofthe lever I52. To-insure the return of th'e lever'l42' intoposition to stop'the power operation of *the' machine 'at the end of a single revolutionbf' the gear wh'eel I-llfi *regardless of how v ith ez operator's controls the treadlea 92,3 the machine is provided. with automatic'imeanssfor releasin'gthe'lever from-theirodilflii. *lThis-means comprises an-pain of :pinsnk I62 :onthe'send offiltlie.

on 'aiislide bar I65; and thus to move athwbarnn :a forward' direction. In this-movement thehar-dfl toidiscon-necta the plate l48icfrom thesplate ="IE5III and-thuspto release-the lever' ;I-42-.a fl hemod MG, isithereafter swungirearwardlyiagain byi airspringrod; and isalsdconnected to'ionerarm oftthe ,threeei armedv leverli42' to control the lattern llft-wiilebe' I again carried iunder' thei plate I 50 ator releases the treadle."

'LThe :machine is runner lprovide'df which may be1=utilized to'. -control the; toe gripp manually. 'This meanslcomprises ahahda-leven I'III positioned at; the .ilefthandiside,ofatherimachiner within vc'onven-ient reach 'ofizthe "ljperator and fast onithe rod 64 towhichvvthe 'toe: gripper By lifting this hand lever the'operatormayzreey lax the 'i'fOYCGT. of: the pull of the. toe gripper. :on

starting positionwhere it is'againtheldfbyithe bell-crank 1ever 14 incase;:.-for" example,it did not 'grip and pulltthe upper properly-when lfi'l'stg,

released to the :action 0f? the spring "665- ,j'BXzdQ- pres'singthe lever I0,- on the'other hand tlie op-' erator may increase the-force-of rthe-pulltof the toe 'gripper on the upper ,either-before-or after theupper has been pulled byitheside grippers. The previously mentioned Lwork support member 24 has. mounted thereon alforepart rest mem- .ber I12 which is vertically adjustable by a1nutI' 'I4 threaded ,on a stem depending from thefm em-g her 112, and alsola .heel restmember I16 adjustable, along a forward extension Q I18 off the ember 24 and held in adjusted position by crew '80. I m I In the operation'of the machine; a lastwn which an upper is assembled" isplaced bottom:

downward on the members I12 and-"I 16 and the the-upper; or may return ithe"-grippergzto'zits.

margin of the upper is inserted between the" open toe, and side gripperjawsfi The operator then depresses the treadle 92 far enough to lift the'latch 82 and thus to 'release the toe g'ripper lever 52 from the belhc'rank lever 14*, whereupon the spring 56 swingsthe lever 52 to close the toe gripper jaws on the upper and toioperatethe gripper to pull the'upper tightly about the 3 heel end of the last ahdto subject it to longitudinal tension while its side margins are'fr'ee of"the"-fside'%grip- I pers. Before further depressing the tree-die"!!! the operator may, if desired; observe-the cbirdi tion of" the upper and byjm'anipulation'of 1-wehand lever I'IO may either increase or diminish the force of the pull'of the,tOe gripperprsmay' again release theflever'r52 to the :actio'nof -the spring 66 by a' second partial -depression of :the:

tre'adley 1Aftertheupperthasi-been pulledxprope erly by the toe gripper,ithe.ope1'ato1f':furtheri:de{

presses the treadletov-tripthelclutchiand start the power operation, of themachine, whereupomthel side grippers alone are 1 operatd 'torigripvand pull the upper, thus tensioningitthedipper: later I 4;

ally and: conforming its further: tortheicontdur' of the forepart I of the :last. Whether the" operae;

tor'has or: has. not released the'treadlefl, the machine-comes automatically toa stop withlthe side grippers holding. the upper, under tension.

'At this pointin the cycle the'operator may eith- 1 er increase or 'i'elap the force of the pull'ot the .-toe. gripper on the upper by manipulation of the handiljever l10, and may adjust .theupper lat-c rally by useofithe lever 42 which controls the 1 I side grippers. 1 While the machine is'thus atrest its conformed' condition bydriving tacks where.

jdesired'orby the use of anysuitable clamping the operator securesthe upper temporarily in means, and -.thereafter. again; depresses 'the i treadle92 tottrip the clutch. It will he'funder 15.

stoodi that x in 5 this "second "depression of the treadl'e the: pawl 86 is'lifted without eflect upon "thetoe gripper, the b ell+crank lever 14 having 'mereIyhee'n-s'wung into positionto connect again "with? thelatch BZ .inthe first half. of the-cycle of the machinelj In this second half of the cycle thertoe and side grippers are return'ed auto matically toithein-starting positions and release the upper, the .bellgrank lever 14 returning'the toe, gripper lever 52 against the resistance of the springfiii." -5

1 Havingdescribed the invention, what we claim as new 'anddesire to secure by Letters Patent of theUnitedfStatesis: V

. upper first through the toe gripper alone to subject it to'substantially the full longitudinal ten 3. In a machine for shapmg uppers over lasts,

1. In a machine Iorshaping uppers over lasts, a toe gripper, side grippers, means for. pulling an sion red uiredto shape it over1'a last,- and automaticv means for thereafter pulling the upper through the side grippers alone vhileit is held under tensionhy the toe gripper. V V

' I2. In a m' achine for shaping uppers over lasts."

a toe gripper, side grippers, means for pulling an 6. upper first through the toe gripper alo ne to subject it to substantially the full longitudinal' tension required to shape it over 'alast, and powerdrivenmeans including a clutcharranged to be actuated topullthe upper thereafter through the side grippers alone; 1

a toe gripper, side grippers, means for pulling an upper first through the toe gripper alone to sub ject it to substantially the full longitudinal tension reouired to shape it overalast-before it is gripped by the side grippers, and automatic-meansv for. thereafter operating the side grippers alone to grip and to pull the-upper while it is held grippersalone to pull the upper while it is held a toe gripper and side grippers movable to pull an upper over a; lastat the end of the toe and the sides of vthe Vforepart respectively, cyclic, power-driven means for operating the side grippers to pull the upper, and mechanism for operating the toe gripper to pull the upper. indeQ I vpendentlyof said cyclic means.- V

6. In a machinei'or shapinguppers overlasts,

a toe gripper and side grippers movable to pull 7 an upper over-a last at the end of the toe and v the sides of the'forepart respectively, cyclic means including a clutch for operating the side grippers to pull the upper, and means for imparting to the toe gripper its entire upper-pulling inove v ment' independentlylof said clutch.

I "71111" a machine for shaping uppers 'over lasts;

a toe gripper and side 'grippersmovable to pull "an upper. over a last at the end of-the toe aridithe sides of the forepart" respectivelyfcyclic means including a clutch for operating the side grip pers alone to-.-pull the upper, anda for, op- V erating thetoe gripp'er'to pullthe upper. a 1

i 8. In amachineforshaping upperszover lasts, a toe gripper and side grippers movable to pull an upperover a" last at rthe' end 'of'the toe and the sides of the f orepart: respectively, cyclic'f'mea ns including a'clutch for operating the side grippers,

alone to pull the upper, a spring "for operati'ng the toe gripper topull the upper; and r'nan'sfor holding: the toezgripper initially in starting p'osi-v r tion against the resistance of. said spring and for releasing it {to the action of the spring; f-

. 9., In a machine for shaping uppers over. lasts;

l 0 a toe gripper, side grippers,- a spring arranged to operate said toe gripper to pull an 'upperi over'a' quired for the upper-shaping operation; 1 means for releasing the toe g'ripperto the action o'ffsaid last and of sufficient strengthto subject'the upper :to substantially the full longitudinal tensionf respring'to cause itt'o pull theupper and means for r V thereafter operating the side grippers-to pull jthe upper. I

10. 'In a machine for shaping uppers over' lasts atoe'g'rippen'side grippers, a spring arranged to operate said toe gripper-to pull an upper over a last and of sufficientstrength'to' subject ,theiipper' tosubstantially thefiull longitudinal- }tension required {or the uppershapingio'peratioii,;nieans for-releasingthe toe grippento-theaction of said spring to causeitto'pu ll theup'per, and power erate the side 1 grippersalone "to "pull the upper and to comeautomati cally' to a s'toplwith'the up perheldunder tension. j 111 In a'machine'io'r- 'shaping in'g said toe gripper'to pull an'upper over a last, means for ,releasingsaid spring tofrender it 'opmeans including a clutch arrange'dto be actuated thereafter to cause the side grippers aloneto pull the upper.

a toe gripper, side grippers, ais'pring arranged sion required for the upper-shaping goperation, means for maintaining said spring under anfin- 12. In'a machine for 'sliapinguppers overfiiasta' driven means constructed andrarranged tofl opt,

40 V uppers -overla'sts, a toe gripper, side grippers, a spring tor operat erative on the toe gripper, and power-driven to operate said toe, gr pper to pull anupper over -a last and of sufiicient strength to subjectjthe upper ,to substantially the full longitudinal tenitial stress and for releasing'it'to render it opera -f tive to imparttheupper-pulling movement to the toe, gripper, and additional'means for o'r' erat-fw ing the side gripperstto pull'the upper. '13. In a machine for. shaping uppers over lasts;

a toe gripper; side'grippers, aspring foroperatin'g said toe gripper topullcan' upper over, a: last,

means forreleasin'g the toe gripperto thelaction of said spring to cause it to pull the upper, and

power-driven means for operating thesideg rip pers alone to pull thetupper; and for returning themto their 1 starting positions and ifor also re turning the toe gripperauton aticallytoits starting position against the resistance ofsaid spring.--

14.. In a machine for shaping uppersfover lasts, a toe gripper, side grippers, a spring for operating 'said toe gripper to pull an upper over alast, means for releasing the toe, g ipper'to theaction oilsaid E se z ii si 15. In a mac driven means foroperating the side grippers to pull the upper and forreturningthem to their starting positions, a: device connected to said power-driven means for maintaining the'toe gripper initially its starting position and for returning it to that position against the resistance of said spring after operating on the upper, and means for disconnecting the-toe gripper from said device to cause the spring toimpart to said gripper its upper-pulling movement. I

16. In a machine for shaping uppers over lasts, atoe gripper, side grippers, a lever movable to operate said toe gripperto pull an upper over a last, a spring for imparting to said lever'its operative movement, power-driven means for operating the side grippers to pull the upper and for returning them to their starting positions, a device operated by said power-driven means for returning the toe gripper to its starting position against the resistance of said spring and for maintaining it in that position, and a latch on said toe gripper lever arranged to be engaged by said device to control the toe gripper, said latch being movable to release the toev gripper to the action of its spring. 7

17. In a machine for shaping uppers over lasts, a toe gripper, side grippers, a lever movable to operate said toe gripper to pull an upper over a' last,.a spring for imparting to said lever its operative movement, power-driven mechanism including a lever for operating the side grippers to pull 'the upper and for returning them to their starting positions, a swinging arm connected to said last-named lever, and a latch on the toe gripper lever arranged to be engaged by said swinging arm to return the toe gripper to its starting position against the resistance of its spring, said latch being movable to release the toe gripper to the action of its spring. 7 Y

18. In a machine for shaping uppers over'lasts, a-toe grippe'nside grippers, a spring foroperating said toe gripper to pull an upper over a last, power-driven means for operating'the side grippers I said toe gripper to pull an upper over a last, a latch 'f or holding the toe gripper'initially in its'startin'g position against the resistance of said spring,

power-driven means including a clutch for operating the side grippers to pull theupper, and a member movable to operate saidlatch to release the toe gripper to the action of its spring and further movable to actuate said clutch and thereby start said power-driven means inoperation.

20. In a machine for shaping uppers over vlasts, a toe gripper, side grippers, means for moving said toe gripper heightwise of a last independently ofthe side grippers to pull an upper over the last, and means for imparting tosaid' toe gripper in its movement heightwise of the he at shahin uppersiover lasts,;.- at esriv errside r ppers, :asp n for operatin -i said tiles npenton ll arzupner ov a t, p w

al t agradius ab rr ria-b ei limovemer t-;.lenst .7 3 azmachin or shap nauppers ov rlasts,H a to l, .ripr .:.y ee ipp m an -;f0r-:m0ri s-- sa d; 1 ipp h i h w s of;- 4115 eiudependr t yfeiwt lside gripp rs t pu l a ,upp rspv herlast,landel i ina m ans a rane ditoim par .Ofie d: oe;s i p r .itscmoveme t he htw s of; he: l t. a: ovem t :a1so-;: ensthwisee of th last said guiding; means b i ,aadj ustab 9} cause the toe gripper'to move either forwardly or rearwardly lengthwise of the last.

22. In a machine forv shaping uppers over lasts,

a toe gripper, ,side grippers, means'for movingsaid toe gripper heightwise of alast independently of the side grippers to pull an upper over j a the last, and a swinginglink connected to said toe gripper for guiding it and for imparting to it in its movementheightwise of the last a movement also lengthwise ofthe last,- saidlink being adjustabletoidifierent positions to cause thetoe gripper to move either forwardly or rear-'- wardly lengthwise of the last;

a' toe gripper, side grippers, a; spring arranged to operate said toe gripper to: pull an upper. over,

'a last and of sufiicient strengthto subject the upper to substantially the -ful1,-longitudi.naltension required for the upper-shaping operation, means for rendering said spring effectiveto impart the upper-pulling movement to the toe gripper before the side grippers pull the upper,

resistance of said spring prior tothe pulling of the upper by the side grippers. a

2a. In a machine for shaping uppers over lasts, a toe gripper, side grippers, a spring for operatingsaid toe gripper to pull an upper over a last,

starting position against the resistance !of said spring prior to the actuation of said clutch. I

25. In a machine for shaping uppers, over lasts;

a toe gripper, side grippers, a spring for operat- 1 ing said toe gripper to pull an upper over a last, a latch'arranged to hold the toe gripper initially in itsstarting position and movabletorelease it to the action of said spring to cause it to pull the upper, power-driven means including 'a, clutch arranged to be actuated thereafter to' cause the side grippers alone to pull theupper, I

and means to enable the operator to move the toe'gripperreversely into position to be held, by said latch prior to theactuation of said clutch.

26. In a machine for shaping uppers over lasts a toe gripper, side grippers, a spring for operating said toe gripper to pull an upperover alast,

means for releasing the toe gripper to the, action of said spring to'cause it to' pull the upper,

power-driven means including, "a clutch for thereafter operating the side grippers alone to pull the upper, and means to enable the .operato operate said toegripper to pull an upper over. I

a last e e tly of the side grippers ,andiof t sufiicient strength to subject the upper to sub 6,- V r 1,990,103 7 t x stantially the fullf longitudinal tension-required a. lastfa rspringfor bperatini salid'flever to imfor the upper-shaping operatibn, mean; for repart} toi'the toe gripper its upper-pi'll lm'gmoveleasing the, toe gripper to the auction of said spring ment' independentlylof the side grippers;means 'to'cause it to pull the upper, and means to en- {qr releasing sa id lever t'o the, fiction- 01 {the 5 able the oper'atortojmove the. ;tbe gripperin a ;spring, and anoth' 'eplever connected tq said-tee 5 'e 7 direction to alter the force 61' its pull 'on the M gripperlevel jand mpvfibl'e' byithe bpetatozj to upper after it has-been operated by sai-spfing. ,alter the forceaof'the pu ll appliede to the; 1 1pper V V 28. In a, machine for shaping uppers b'Ver lasts by the' toe gripperg' I v a toe gripper,;side grippers,a'lever 'movablezto I HAROLDERNEST EILIOTI;

"moperate sg id toe gripper to pull an upper over FRANK; COLEMAN CHOICE;

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