US1697983A - Pulling-over mechanism - Google Patents

Description

Jan. 8, 1929. 1,697,983

J. T. LANCASTER PULLING ,QVER MEGHANISM Filed Dec.` 23, 1925 0 3F40 ffw/i yllllllI/IIIIIIIIIIIL NVE/v ma r Patented Jan. 8, 1929.

u i g intese- JOHN T. LANCASTER, OF NEWTON, MASSACHUSETTS, ASSIGNORTO: UNITED "i SHOE MACHINERY COEPQRATGN, OF PATERSON, NEVJ JERSEYNA 'CORPORATION ,OF NEW j j JERSEY.

PU'Ll'iIlT."Gr-OVERv MECHANSM. f l

Application filed December 23, 1925. Serial No. 77,277.

This invention relates to mechanism for use in the manufacture of boots and 'shoes for l pulling uppers over lasts. Among its objects the invention aims to provide simple, compactand convenientlyai'ranged means for operating upon an upper in different spaced locations about a shoe in preparation for the driving ofthe fastenings for holding the upper in pulledover position, and isV herein shown as embodied in a plurality of gripper and wiper units which present various novel features of construction and arrangement for the purposes in view, ashereinafter more particularly set forth. y f '1 A. more particular object of the invention is to provide an organizationrof .such a character that theupper-pulling means and the j upper-fastening means will have ample space in which to perform'their respective operations without the necessity of resorting to ,special design or to special movementsof one or both of said means in order to avoid conflict between them. `For the purposes in view, the 4construction herein shown comprises grippers whichare so arranged as to extend outwardly from thelateral periphery of the shoe, instead of extending in directions substantiallyY perpendicular to the plane of the shoe bottom as common heretofore.

ySpace is thus afforded opposite tothe .bottom siderable distance from the field of operation of the grippers. The outwardly extending grippers, moreover, are arranged 4to be operated and controlled inrsuch manner as to facilitate the introduction of the margin of the upper between the gripper jaws and to provide for the proper pulling of the upper over the last. As herein illustrated,each gripper is arranged to gripthe margin of the: upper in a plane substantially parallel to the plane of the shoe bottom. and is independently mounted for upper-pulling movement about an axis which is located at a considerable distance outwardly from the shoe beyond the gripper jaws so that the effective pulling movement of the jaws is in a direction substantially perpendicular to the plane of the shoe bottom. To permit the margin of ythe upper to be readily inserted between the gripper jaws, the latter are arranged to present initiallyian upper-receiving opening whichshoe, and as herein shown the gripping of the upper is eifected by closing movement of` that aw only which grips the upper on the outer face of the latter, so that in closing the tendency is to tighten the upper over the last in lpreparation for the subsequent pulling there'- `after described for wiping the upperinwardly over the bottom of the last. To accomplish y*effectively the objects in view, theidift'erent gripper jaws in the construction shown yare arranged to be controlled independently'of eachother in respect to their closing and opening movements. n

ln accordance with a further featureof the invention there is provided a novel combinationiof means for gripping and pulling the upper'and for wipingv its'margin inwardly over the bottom 'of the shoe. As' herein shown, each gripper, arranged as hereinbefore described to grip the upper in a plane substantially parallel to the plane of the shoe bottom, is provided with means extending in substantially parallel-relation to the plane'in which the upper isgripped for wiping the margin inwardly after Vthe upper-ptlling operation. Moreparticularly, the construction shown comprises a wiper 'pivotally mounted on thatjaw of the gripper 4which grips the upper onits outer face, this wiper being operative to wipe the upper inwardly in response to longitudinal movement ofthe gripper. The position of thewiperis thus determined by that gripper jaw on which the wiper is mounted, by reason of which it isdesirable that the release of the upper be 'effected by movement of the v'other jaw in the manner above explained.'

The invention further provides a novel construction andv arrangement of means for pulling the upper and for wiping it over the lateral periphery of the last toward theedge i of the shoe bottom, i. e., for upwiping the upper. In its embodiment of this feature the construction shown comprises a4 Wiper combined with each gripper tomove therewith as unit in theupper-pulling operation, this wiper being movable lengthwise of thegripfv per toward and from the shoe and arranged to serve after the Vupwiping operation to clamp the upper adjacent to the edge of the shoe bottom during the overwiping and up- 1 per-fastening operations.

The above and other features of the invention, including various novel detalls of construction and combinations of parts, will 1 now be more particularly described by refer- .enc'e to the accompanying drawings and pointed out in the claims.

In the drawings, Fig. 1 is a plan view, with parts in section,

showing a-gripper and wiper unit construct- Y ed in accordance wit-h the present-invention and illustrating the relationof the unit to shoe-positioning and upper-fastening mechanisms in a machine in which the shoeis positioned with its toe pointing vertically' uprFigs. 2, 3 and 4 are views similar to Fig. 1,

'illustrating different successive positions of the parts 1n operating upon a shoe; and

Fig. 5 shows in rear elevation a group of units of the character illustrated in Fig. 1,

, positioned in different locations about a. shoe.

For positioning the last with its shoe mate- 'rials including the upper and thesole or insole (herein referred to generically as the sole regardless of the type of shoe), any suitable means` may be utilized,fthe construction shown comprising a sole rest 1() such as is shown and described in detail in my copending application, Ser. No. 77,276 led on December 23, l1925. As herein illustrated, the

arrangement is. such that-the shoe is positioned With its toe pointing vertically upward so as to present the top of the forepart conveniently within view of the operator of the machine,'although the invention is not lim'- ited to an organization in which the -shoe is positioned in this particular manner. For

'pulling the upper and for wiping it into a position to be fastened to the sole, it is conl templated that there will be utilized a plu- "the shoe, these different units being substantially identical in construction except as to width.

.The construction of one of the gripper vand wiperunits is shown in detail in F ig. 1. For gripping and pulling the upperV there are .provided cio-operating gripper jaws 12 and 14 n arranged to engage the upper respectively uponthe outer and inner surfaoesof the latter. Both the gripper aws are pivbtally mounted at 16 on a gripper bar 18 which is movable lengthwise in directions toward and from the vmatters of design and vided a yoke which is pivotally connected to the gripper bar 18 at the opposite sid-es of the latter and is operated 'by a member' 32 to which the yoke is pivotally connected at 34 so as to permit longitudinal movements of the gripper in response to rvthe action of the slide 22.

The gripper jaws 'l2 and 14 are movable independently of each other about the pivot 16 and are independently controlled with respect to such movements by separate operating connections. For this purpose there is slldably mounted 1n the gripper bar 18a rod 36 which is connected by a link 38 to the grip?" )er `aw 12 so that swino'inCr movements of 7 D c v this jaw toward and from the other jaw are effected by movementslof the rod 36. For

`controlling the j aw 14 there is provided a red 40 which extends along one side of the bar 18 through the yoke 30,r ,It will be understood that the rods 36 and 40, and likewise theother connections herein ,described for imparting the various movements to the different operating instrument-alities, are to be connected to suitable mechanical means .for operating them in the required time relation to one another, such operating means not being illustrated, since the details thereofare merely Yferm no part of the present invention.

In accordance with one of the objects of the present invention, the gripper is' utilized after the pulling of the upper to wipe the margin of the upper inwardly over the sole. To this end, there is pivotally mounted on the gripper jaw 12 a wiper 42 which has its inner end slightly upturned to assist in guiding it over the shoe bottom, this wiper being free to rock to a limited extent on the grip-V per jaw about an axis extending laterally of the jaw to permit it to apply a substantially uniform wiping pressure across the margin of the upper.`v` It will be understood that the gripper Y receives its longitudinal wip-ing movement from the slide 22 when the latter is operated by the bell crank 26. l

Combined with the gripper there is further provided a. device for engaging the upperupon the lateral. periphery of the last and for wiping the upper heightwise of the last to the edge of theV last bottom. This device comprises a slide or wiper 44 which is mounted adjacent tothe gripper bar 18 fandisguided by a lateral extension- 46 on:

the bar, the wiper having 'at its inner end a yfacing or pad 48 ofyieldable material for engagement with. the shoe. `It will thus be seen that the wiper 46 and the gripper are moved as a unit heightwise of the shoe by the action of the member 32. Movement of .the wiper 44 lengthwise of theA bar 18 to carry it into and out of engagement with the slice is effected by means ot a link 50 con- .'nected 4to suit-able operating mechanism'.

For fastening the'upper after it hasbeen .wipedinwardly over the sole, there may be z conveniently utilized tacking mechanism of the saine character asithat shown and de scribed in. my copending application here- .inbei'ore mentioned, although the .invention is not dependent yupon the use of fastening means of any particular character.- Fastening mechanisml such as shown in said co- .pending application comprises a plurality of .tack holdersor tubes with tack drivers therein, the tubes and thed'rivers being positioned opposite to the bcttomof the shoe and moved lengthwise toward'. the shoe and then operated to drive the tacks after theoverwiping operation. For illustrative purposes a single t-ack tube 52 and its tack driverv 54 are shown in the drawings. rlhe number of such t-acking devices willdependon the number or' points atfwhich it'is'desired to fasten the upper, the drawings illustrating an arrangement whereby three tacks aredriven at leach side ot' the forepart ot the shoe and a single tack at the end of the toe. The arrangement is such that thetacks are drive-ii Vthrough that gripper jaw which is neXt to the bottom of the shoe and through the wiper mounted thereon, the jaw and thev wiper being provided with slots, indicated bydotted lines at 56 in Fig. 5, top permit thetacks to be driven. For supporting the shoe against the pressure of the overwiping and fastening means there is provided ashoe restv58.

In the operation of a. machine provided with upper-pullingA and wiping means such .as above. described the shoe is-presented in 'the position illustrated in Fig.` 1,- the gripper .jaws v12 and 14 being arranged to present at that time a comparatively wide opening l oppositeto the lateral periphery of t-he shoe Y to permit lthe upper to be readily inserted between them. It will be observed that, as the jaws are thus positioned, the upper-engaging `iace ot' the jaw 14 extends in a general direction substantially parallel to the` shoe bottom. The gripping. oie the upper is preferably effected by. swinging movement of the jaw 12 only, in response to the action of the)r v rod 36, while the opposite j aw 14 is held stationary by its rod'` 40. 1n this manner the jaw'12 tends to tighten, the upper over the4 y last as it swings heightwise` ofthe shoe into' position/to grip the margin oi the `upper against the jaw 14. Afterthe margin -oi' the upper has thus been grippedin a plane substantially parallel to the plane of the shoe bottom, the pulling of the upper isefi'ected by swinging `movement of the gripper about member. 32. It will be observed that `the pivot 20. about whichthe gripper swings is located at a considerable distance farther loutwardly from the shoe than the gripper jaws and substantially in vthe plane of the shoe bottom, so

that the'effective pulling movementot'the jaws .is in a direction substantially yperpendicular to the plane Vof the shoe bottom.

After'the margin of the gupper has ybeen gripped by the gripper jaws, and it maybe after the jaws have begun their pulling movement, the wiper 44 is moved vinwardlyinto enf gageinent with .the upper on the lateral perelease the upper is preferably effectedv when .the gripper and wiper unit .has arrived substantially ory nearlyy at vtheend of itsoperative movement heightwise of 'the slice. lhen the gripper and wiperunit has thus arrived at the 'end of its movement, the gripper jaw .y 12and ther wiper 42 are in position to beginv the overwipiiig operation. vRelease of the vupper by the gripper is effected' by swinging move-ment of thejaw14 only, this jaw being swung outwardly far enough to be clear of the tacking mechanism when the latter is operated todrivethe tacks.

. After: the gripper has releasedthe upper,

the overwiping operation is effected Vby longitudinal movement of thegripper in'response to the action of the slide 22, the gripper aw` 12 being held at thistime by' its voperating connections in position to bring effective wiping .pressure to bear upon the upper through thewiper 42. During `this.overwiping operation .the wiper .44 remains in position to actas a clamp to assist in holding the upper on t-he lateral periphery' of the last. At the .end of the overwiping operation the tacking mechanism is moved toward the bottom of the shoe and the tacks are driven. Thereafter the various parts of the machine are returned to their starting positions and the shoe is released. f

y'It will* be observed that since the gripper and'wiper units are arranged to radiate outwardly fromv the shoe in directions transverse to the lateral periphery of the shoe and, as

herein shown, in .directions substantially. parits pivot 20 in response to the action of' the i'io ' allel to the plane of thefshoe bottom, there is i ed independently for swinging movement 'j heightwise of the shoe to pull the upper.

afforded ample space opposite to the bottom of they shoe for the upper-fastening mechanism to be permanently positioned Vand operated at a considerable distancefrom the field of operation of the grippers, so that the organization does not present any special problems resulting from dangerv of possible conflict between the grippers and the upper-fastening devices. Y

IVhile the invention is herein illustrated by Vreference to an organization comprising gripper and lwiper units substantially ident-ical in construction for operating upon the upper at the end andat' the opposite sides of the shoe,

the invention is not thus limited, and references in the claims to a plurality of grippers or of gripper and wiper units are not intended as definitions of an organization in which all of the grippers or ofthe` gripper and wiper units that are utilized are necessarily constructed as set forth.

Having described the invention, what I claim as new and desire to secure'by Letters Patent of the United States is 1. In mechanism ofthe classdescribed, the combination with shoe-positioning means, of a lplurality ofy grippers lfor pulling the upper respectively in diiferent spaced locations about the shoe, said grippers being arranged to radiate outwardly from the shoe in directions substantially parallel to the plane of the shoe bottom and each being pivotally mount- `2. In mechanism of the class described, the

combination with shoe-positioning means, of

a plurality of grippers for pulling the upper respectively in diierent spaced locations about the shoe, said grippers extending outwardly in directions transverse to the lateral periphery of the shoe and each beingindependently mounted for upper pulling move? ment heightwise of the shoe about an aXis located farther outwardly from the lateral pej i riphery ofthe shoe than its upper-engaging portion. y Y

3. In mechanism of the class described, the combination with shoe-positioning means, of a plurality of grippers for pulling` the upper respectively in different` spaced locations about the shoe, each of .said grippers being pivotally mounted independently for upperpulling movement heightwise of the shoe about an axis located substantially in Athe plane of the shoe bottom and farther outward- I v ly from the shoe than its upper-engagingpor-` tion.

4, In mechanism of the class described, the combination with shoe-positioning means, of a plurality of grippers for pulling the upper respectively in different yspaced locations about the shoe, said grippers beingarranged vto radiate outwardly from the portions of the lateral periphery of the shoe where they engage the upper and each .comprising a pair of jaws for gripping the Vupper in a plane suhstantially parallel to the plane of t-he shoe bottom throughout the upper-pulling opera.-

.tion.

1 5. In mechanism of the class described, the Y combination with shoe-positioning means, of

a plurality of grippers for pulling the upper respectively in different spaced locations the shoe bottom, each pair of jaws being independently mounted for upper-pulling movement heightwise of the `shoe about an axis located farther outwardly from the shoe than said jaws.

6. In mechanism of the class described, the combination with lshoe-positioning means, of a plurality of grippers for pulling the upper respectively lin different spaced locations about'the shoe, each of said grippers comprising a pair of jaws each mounted to swing toward and from the other and separately controlled in respect .to such-swinging f i movements. j

7 In the mechinism ofthe class described, the combination with shoe-positioning means,.of a plurality of Vgrippers for pulling the upper respectively in. different yspaced locations about the shoe, each of said grippers comprising a pair of jaws separately controlled in respect to vopening and closing movements and arranged to grip the upper in a plane substantially parallel to the plane of the shoe bottom. v

8. In mechanism ofthe class described, the combination with shoe-positioning means, of a plurality of grippers for pulling theA upper respectively in diderent spaced Vlocations about the shoe, said grippers being arranged to radiate outwardly from t-he lateral .periphery of the shoe and each comprising a pair lof separately controlled aws each mounted to swing toward and from the other and both mounted to swing as a unit heightwise of the shoe to pull the upper.

9. In mechanism of the class described, the 1' i of a plurality of grippersfor pulling` the upper respectively in different spaced'locations about the shoe, each of said grippers comprisplane of the shoe bottomafi id means for pre.

senting that jaw which-` engages the inner tace of theupper in an upper-receiving positionun which its upperfengaging;tace is substantially parallel to'theplane. o't-he. shoe bottomz and it'or eiecting they gripping of the upper'by movement/of the 'other jaw.

12. In mechanism ot' the class: described, the combinationwith shoe-positioning means,

` of a plurality of'grippers 'or. pulling the upper respectively in different spacedy locations aboutthegshoe, each otfsaid grippers comprising a pairot jaws arranged. to be independently controlledviin respect-toV openingand closing movements, 'and'. means; forv effecting fthe gripping ot' the upper by movement oone of said jaws and for effecting the release of the upper by movement of the other 13. In mechanism oit the class described, the combination with shoe-positioning means, of a plurality ot grip-pers for pulling the upper respectively in different spaced locations about the shoe, each of said grippers comprising a pair oi jaws arranged to grip the upper in a plane substantially parallel to the plane .of the shoe bottom, and means for eiecting the gripping oi the upper by movement of that jaw onlythat engages the outer face of the upper and for effecting the release of the upper by movement of the other jaw only.

14. In mechanism of the class described, the combination with shoe-positioning means, of a plurality of grippers tor pulling the upper respectively in different spaced locations about the shoe, each of said gripperscomprising a pair of jaws arranged to grip the upper in a plane substantially parallel to the plane ot the shoe bottom and having thereon means for wiping the upper inwardly over the bottom ot the shoe in locations only' where the pulling ot the upper takes place.

15. In mechanism of the yclass described,

the combination with shoe-positioning means,

of a plurality of gripperstor pullingtheup.- per respectively in'ditlerent spacedlocations l about the shoe, ,each otsaid gripperscompris ing a p air of jaws anran'ged-.to gripftheaippei; iny aplanesubstantially parallel tothe. plane of the shoe bottom, and awipen mounted 0n one of: the jaws of eachl gripperon-the oppositeside from its upper-grippingtace'and-.of substantially thesame extent lengthwise of the edge oftheupper assaid gripping face for wiping the upper inwardly, overthefbot# tom ot the shoe. .i i 17. In mechanism'oftheclassjdescribed,rthe combination with? shoe-positioning means,V of a plurality of grippers forpullingthefupper. respectively in different spaced?. locations about the shoe, each of said: grippers. having wipingmeans thereon and beng-mountedfor swinging'movement to pull tlieupperand-for rectilinear movementgto wipe theaupperingwardly over thebottom of the-shoe:

18. In mechanism'ofthe class describedtle combination with shoe-positioningmeans, of a plurality of grippers arranged t0 radiate outwardly, from the lateral. periphery offt'he shoe for pulling the .upper respectively,P in dinerent spaced locations about',y the shoe and each comprising a pair ofjawstorfgr-ipping the upper ina plane substantially.. parallel to' the planev ofl the. shoe bottom eachio said grippers having.r wiping means..` thereonI and being mounted for swinging movement heightwise of the shoe to p-ull the upper and for longitudinal movement to wipe the upper inwardly overfthe bottom of the shoe.l

19. In mechanism of the lclass described, the combination with shoe-positioning means,

of a plurality of grippers arranged to radiate outwardly Jfrom the lateral periphery of the shoe for pulling the upper respectively in diierent spaced locations about the shoe and lub each comprising a pair of upper-gripping jaws, one of the jaws of each of said grippers having thereon wiping means for wiping the upper inwardly over thebottom of the shoe llll in response to inward movement of said jaw over the shoe and provided with an opening through which a fastening 4may be driven for holding the upper.

20. In mechanismof the class described, the combination with shoe-positioning means, of a plurality of gripper land'wiper units for operating respectively in diierent spaced vlocations about the shoe,'each ot said units being movable heightwise of they shoev to pull the upper and including a wiper arranged toengage the upper on theV lateral periphery of the shoe and to wipeit toward the edge of the shoe bottom in the operative movement of` of the shoe bottomand each comprising aY gripper for pulling the upper and a wiper for wiping the upper heightwise'of the shoe to- Vward the edge ofthe shoe bottom.

22. In mechanism of the class described, the combination with shoe-positioning means, of aplurality of gripper and wiper units for operating respectively in different spaced locations about theshoe, each of said unitsy comprising a gripper arranged to extend outwardly from the lateral periphery of the shoe and a wiper movablelongitudinally of said gripper into engagement with the upper ad-v jacentto the gripper for wiping t-he 'upper heightwise of the shoe.

" 23." In mechanism of the class described, the combination with shoe-positioning means, of a plurality of gripper and wiper units for op- "erating respectively in diiferent spaced locations-.about the shoe, each of said. units comprising agripper arranged to grip thefupper in a plane substantially parallel to the'plane of the shoe bottom and movable height-wise of the shoe to pull the upper and a wiper movable with said gripper to upwipe the upper.

24. In mechanism of the class described, the combination with shoe-positioning means, of ay plurality-.of gripper and wiper units for operating respectively in diferent spaced loprising an, upper-pulling gripper having Y means thereon for wiping the upper inwardly over thebottom of the shoe and also comprising a wiper forwiping the upper `over the lateral periphery of the shoe. Y.

,- 26.- In mechanism of the class described, the` combination with shoe-positioning means, of a plurality of gripper and wiper units for op-l erating respectively in dierent spaced locations about the shoe, each of said units comprising a gripper movable heightwise of the shoe to pull the -upper and having thereon means for subsequently wiping the upperinwardly over the bottom of the `shoeand comprising also a wiper arranged to engage the upper on the lateral periphery of the shoe and movable with the gripper to upwipe the upper in the .upper-pulling operation.

LANCASTER.

' In testimony whereof 4I have signed my name to this specification. JOI-IN T.

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