US1259796A - Work-holding means for shoe-machines. - Google Patents

Description

v L- F. STANDlSH. WORK HOLDING MEANS FOR SHOE MACHINES.

APPUCATION FILED MAY 23. I916- Patented Mar. 19', 1918.

1. F. STANDISH. WORK HOLDlNG MEANS FOR SHOE MACHINES.

- APPLICATION FILED MAY 23. I916- 1,259,796. Patented Mar. 19, 1918.

3'SHEETS-SHEET 2-.

'1. F. STANDISH.

WORK HOLDING MEANS FOR SHOE MACHINES.

APPLICATION FILED MAY 23. 1916- v Patented Mar. 19, 1918.

3 SHEETS-SHEET 3- i for Shoe-Machines, of which theffollowing provide work holding means for shoe ma-' V the said device s rigidly against movement UNITEDSTATES PATENT oFFIo Joan; srANDrsH, or wnvri-inor, assacrrusnrrs, nssreivon, BY MESNE Assisi:- 'MENTS,"TO UNITED snon MAcnINEaYcoaroRArroN, or PATERSON, NEW JERSEY,

A CORPORATION OF NEW JERSEY. 7

WORK-HOLDING MEANS FOR SHOE-MACHINES.

To all whom it may comm.-

Beit kno n that I, JOHN F. S'iAN'DIS H, a,

citizen of the United States, residing. at VVinthrop,,in the county of Suffolk and State of Massachusetts, have inventedcertain Improvements'in VVork-Holding Means description, in connection with the accompanying drawings, is a. specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to work holding means for shoejmachines and, in the following specification and accompanying draw: ings, it. is, described and illustrated asapplied to a heeling machine of the type disclosed in U. S. Patent N 0. 1,157,688, granted Oct. 26, 1915. Itshould be'understood that this is merely for the purposeof making an adequate disclosure of the f invention and that the invention is not limited in its util-' ity to embodiment in this particular. type of machine but that it may be advanta geously used in a variety ofmachines for operating upon boots or shoes. In attaching or securing together the dif:

I ferent parts of a shoe, it is frequently necessary to adjust one or moreofrthe parts in order that they may be brought into proper relation toeach other before they are se cured together. .VVhen the shoe is mounted upon a wooden last,it' is :alsofrequently necessary to adjust the shoe or last supporting member to conform to non -symmetrical or misshapen lasts. WVhile it is desirable to be able to makethese adjustments frequently and eXpe ditiously', it is nevertheless frequently desirable, and often necessary,

thatthe parts beheld rigidly in adjusted position while the operation of attaching them together isvbeing carried out. 7

The object of thepresent invention is to this object in view an important feature of" the invention consists in the provision of a freely movable work supportrand a freely, movable work clamp in combination with.

means, preferably; automatic, for locking Specification of Letters latent. Patented Mfaf, 19,- 1918, Appiicationfi1edMay23, 1916 serial No. 99,227. i after the desired adjustments have been made. 7 In the preferred form of the mvention themovements of the clamp are effectedby, movementcf the work support so that by moving the Worksupport or jack to the position to locate the shoe properly relatively to the part tobe attached to it, for} example,a heel, the clamp will automati cally be located in theproper position to re.-

ceive the shoe. It is, furthermore, pres ferred to provide separate sets of stops 'foi' independently determining the limits of movement of the Work clamp and the shoe supportto theend that, in their finalposi t1ons, they may be made to occupy any desired relation to each other, and this result is conveniently accomplished by supporting the stopsforthe shoe support upon the carrier which carries the clamp.-

A further featureoffthe invention relates,

to a YOIkClELHlP comprising clamping members, or jaws, which are relatively movable to receive the work and to accommodate ork of different sizes, in combination with meansfor locking the said jaws solidly agams't'movement' after the work has been introducedbetweenthem, so thatthe force applied in the subsequent operations .upon' the work Q cannot displace it. This resultmay be conveniently secured by providing a normally noperative. lock or clutch for the clampingaws and a controlling mem ber, such as, for example, a back stop,'ar-

ranged towthrowc the look into operation when the saidcontrolling member is encompanying drawings, in which:

Figure 1 is a perspective view of an embodnnent of the invention applied to a mu,

known type of heeling machine,

,Fig..2 is a sideelevation Oat s inellar nisin shown in Fig. 1, showing additional details of, its mounting and relation to the remainder of the machine;

Fig. 3 is a sectional view, taken in a ver tical, medial plane from front to rear;

Fig. :4? shows a detail of the adjustable stops for. the work clamp;

mechanism for thew ork clamp; and.v

Fig. 6 shows, upon anenlarged scale, de

V p .105] Fig. 5 illustrates detailsof the locking tails of the locking mechanism for the work support. 7 I

Referring" to the drawings, 10 indicates a-p'orti'on of the frame ofa Heeling ma chine. 12 indicates the usual jack supporting spindle connected to the iront end of the Walking beam, the rear end of which is operated; by the back rod: 14, all-as more ceiiipletelj disclosed in the prior patent above referred to. The werk sapperehere: in disclosed comprises a jack V16 pivoted at is it the jack Slide-20, ariied by the spin? dle 12; I 1

Inordertfo provide for transverse adjustment of the j ask, to compeh'sate'zfor various degrees of asymmetry in the form or 1 m: 7 tioh of thel'ast; the upper end'of the'j'a'ck post is transversely slotted, asshown at 22; and is mounted fotfree sliding movement on the gumem; The jack is'sep'arat'ed at -261into an upper section 28" and a lower settles 3'0, fe'sp'eetivelfv, the seeti n's being connected by a plunger "32. The upper.

eiidof the plunger carries a coriu g'ate'd plate 34wl11'ch 1s locatetl'ln a recess 36 in thesec'tion 28, the size of the recessbeing so proportioned thata' limited ainount'of ver tical movement of th'e'p'lunger 32" is permitted; Normally, the Weight of the lower jack section causes the plate 34b to rest in the bottom of the recess 36 but when the up ward pre'ssure is exerted on the j ac'k the plun erea and plate 3% are raised untilthe two" sections" of the jack abut and the teeth v upon the plate 34 m'esh'witli a corresponding series of te'eth' upon the lower face of a locking plate 38 rigidly mounted in the jack is held rigidly against movement from its adjusted position until the pressure is released. I

Iiroi deri to locatethe shoe relatively to theheel, a; clamp for enga i g.- the counter and rand crease of the Sl IOe' provided; Theslidetz is supported for movement forwardly and rearwardly of the machine in a I stationary dovetailed guide 44; Anjadj'ust ing screw 456, having at ts forward end a crank handle 48', is ournaledina bearing 7 56 'foiining" part of the slide 42 and enters a stationary nut 52 secured to the guide castii1g '4l4. By turning the crank 48 the slide 42a11d' the entire meehanism of the" clamp, c'arriedtheiebj Iare adjusted bodily forwardly or rearw'ardly. The claihp and its connections'to theslide' 12 will now be described'i arranged-to enter a: hole? 6 in the slide 42.

By pulling but the'pin 7%, the crank and the serewniay be turned anintegral number of revolutions and will be held in adjusted pesition by again allowing the pin to enter the liole The purpose of limiting the ad just'ment' to an integral number of revolutions of the screw will become apparent later. A slide 78 1s mountedl'or free verti cal movement in dove ta iled guides in the casting" 58' and is supported bya chain 80 which passes over an idle sprocket 82 and is connected to a hook 8 1 prcjecting' rearwardly from the jackpost'hanger 86. By insertingrthe hook 8st in difler'ent links of the chain 80; vertical adjustment of the slide 78 is sec'ured and, by means ofthe connecti'on's described, the slide is raised and lowered as the ackis swung outwardly and inwardly. This detail of construction is SlIhllElf to machines already known in the art:

A clamp headSS is secured by'clamping screws 90 to a stud 92 supported in the slide 78% loosening the screws 90; pivotal adjustment of the head and the clamp carried therebyin a vertical plane is permit'te'd' This is foi" the purpose of causing the clamping jaws to enter properly the rand creases of shoes having heels of differeiit height and pitch. A pair of clamping arms at, 96' are mounted upon the head;

88' for pivotal movement, in a horizontal plane, and carry at theinfr'ontends jaws 98 for engaging the counter and rand crease of a shoe. A pairoflinks'IOO connects the rear ends ofthe clamping barstogeth'er and the links in' turn are pivotally connected by a center pin 102 which is mounted in a slide 104 mounted for movement forwardly and rearwardly in guides106 formed in the head S8. spring 108 is connected to the slide 104: and tends todraw the slide rearwardly, spreading therear'enjd's of the arms and forcing the jaws 98 toward each other. Thesp'reading movement of the rear ends ofthe arms and, consequently, the approaching. llIQ Vl'l'lent Of the'jaws are limited by a rod 110 threaded into an adjustable thumb nut 112. The clamping ar'ms are adjusted until the spacing between the jaws l is slightly less than the width of the shoe,

the sprin'g 108. permitting the jaws to yield outwardly as the heel end of theshoe is pushed into the clamp.

' In order to prevent yielding of the clamping jaws and consequent displacement of the shoe under the forceof the attaching operation, means is provided for locking the clamping jaws rigidly against relative movement after the insertion of'the work. 'A

back stop 114is mounted on a lever 116 pivoted at 118 injthe head 88and pivoted at its upper end to a-conne'ctingdink 120 which, Y in turn, is yieldingly connected through a spring 122 to a roller cage 124. The cage 124 contains a ball or roller 126 arranged to engage the upper face of the slide 104. Above the roller 126 a cam plate 128' is secured to 'the head 88 in such arelation tothe parts.

already described that,"when the roller cage 124 is drawn forwardly, the roller binds beautomatically the transverse movement of the work clamp,-and at the same time to limit thetransverse movement of the jack both absolutely andrelatively tothe work clamp, the jack is provided with a rear- Wardly extending projection 130 which en} ters between two stops 132, 134 carried by the slide 78 which moves transversely with the work clamp. The stops 132,134 are mounted in a guide 186 and by means of a right and left screw 138 may be adjustedsimultaneously toward and from each other.

When they are adjusted toward eachother until the space between them is onlysuflicient to admit the projection 130, the jack and theclamp move transversely together as a unit. If the stops are separated by a greater distance lost motion occurs'between the projection 130 and the stops and, by varying the adjustment of the stops, the final position of the jack relative tothe work clamp may be controlled as desired;

V This is particularly useful in adjusting the jack to lasts in which the cone or pin hole is at oneside of the center;

, 1 In order to lock the Work clamp against lateral movement from the posltion into which it has been moved by the operative shifting the jack to one. side or the other, the following automatic mechan sm 18 provided: A segmental, toothed locking bar 140 is secured upon the rear face of the clamp carriage 58. A rocker shaft 160, ournaled inthe slide 42, carries; a toothed locking segment 162 adapted to mesh with'the teeth upon the bar 140. A pinion 164, formed f upon the rocker shaft, meshes with a toothed segment 166 formedupon one end of alever f 170 which is also pivoted at 172 in the slide 421 The other end of the lever 170'i's pive otally connected, through a yieldin' spring pressed plunger 173, to. anadjustzfi le link 174 connected at its opposite end to the walking beam of the heeling machine. Af-

ter the parts of the work hare been properly positioned relatively to each other and the operative has stepped upon the treadle of the machine, the walking beam descends to press the parts of the work into engagement with each other. This operation,

to engage the bar 140, positively lockingthe latter, and the clamp carriage upon which 'it is mounted, against lateral movement; The spring'pressed plunger 173 acts as-a safety device to prevent breakage i n "the event of the teeth upon the segment 162 and .the vbar 140 not meshing properly -This contingency, however, is not likely to occur, since the pitch of the teeth is the through the link 174, causes the segment 162 same as the pitch of the screw 70-, so-that one revolution of the screw moves the stops 66, 68 the distance of one toothupon the stagment 162. If, 'now,'the,clamp carriageis moved against either of the stops 66 or 68,

the teeth of the'locking'device will mesh properly and they are furthermore sharp: ened somewhat on their edges in order-to cause them to go easily into mesh, even though they may not be exactly in register.

The operation of the mechanism heretofore described. is as follows: The jack beingswung into its outer position, as indicated ii -Fig. 2, a heel is placed in. the heelholder and a shoe, upon its last,-is placed upon the jack and pushed back intogthe clamp- The clamping aws yield outwardly to permittlie insertion of the shoe and are locked against i relative separating movement when the shoe engages the back stop 114 and throws the roller clutch into 013611161011. The jack is moved to the right or the "left, asthe case may be, until the projection 130 comes into engagement with its limiting stop, which is adjusted to locate the jack properly rela-- tively to the last in the shoe'held in the 1 clamp. The jack and clamp are then moved farther in the same direction until the projection 64, upon the rear face of the clamp carrier 58, engages its limiting stop, which is adjusted until the shoe occupies the proper transverse relation to the heel. The treadle is now actuatedand pressure is putupon the work. The locking segment 162 automate the cally meshes with the bar 140, holding an the clamp rigidly against movement,

.plate 34 meshes with the plate 38, holding thejack :solidly against transverse move- (rnent. The parts-otthe WOl'k are now held ifirmly stationary in their properrelative positions,-'all the Work holding elements bei-ngi positively locked, and; 110. relative movementof theparts of the workvbeingpossible -under the pressure appliedtothem. The ;.parts all remain inv this condition until the operationupon-the Work, in this instance, the attaching of the heel to the shoeis com- .pleted. N OW, upon the release of the presvsure, the parts return totheir normal posi- %tions, the jack and-work clamp being, asbefore, freely movable transversely to 1 permit l5-the'p.arts of thernext piece of workto be located as desiredrelatively to each other. 'lheilimiting stops forthe work clamp and rthegjack are. made simultaneously adjustable equally and oppositely in order automati- 2o=cally to provide for right and left shoes which are ordinarily symmetrical relatively to each other. J

'allaving described the invention, What is claimed as new anddesiredtobe secured by LettersPatent of the United -Stat-es is:

I 1. In a machine of the class described, the combinationof a shoe holding clamp nor- :mally freely movable transversely of the :shoe, and means.for automatically locking .the clamp againstmovement at apredeter- :mined period in the operation of themaschi-rie.

2. Ina machine of the class described, the icombination of .a shoe holding clam nor- ;mally freely movahle transversely of the -shoe, and means for automatically locking theclamp against movement When the ma- 7 chine is started. I

- .3. In a machine of the class described,

-.the combination of a shoe support, a work holding clamp movable relatively to the shoe support transversely of'the shoe, connec-- tions between the shoe support and the -cl-amp wherebythemovement of the clamp .45 is. centrolled bythe shoe support, and auto-' matic means for locking'the clamp against anovement.

4. In a machine of'th'e class described, the 'combin-ationqof a shoe support normally freelyamovabletransverselyin a right'line,

and means for locking the support against holding clamp both normallyireely movable transversely of the shoe, and means torlockmg both the support ancl the clamp against movementat a predetermined period in the operation ofthe machine 7 ,6- In a-machine of the class described, the combinationofv a shoe clamp movable transversely of'the shoe, stops for limiting the movementof the clamp, a transversely movable shoe support, and -a stop,.movable with the clamp, for limiting the movement of the shoe support. I p

7. In amachine of the class describechthe combination of a shoe clampmovable transversely of the shoe, adjustable stops for limiting the movement. of tl1e'-cla1np,-.atransversely movable shoe support, stop, movable With the clamp, for limiting themovement of the shoe support, andmeansfornautomatically lockingthe clainpin the posi- -.tion to which it is moved.

8. In a machine of the class described, the combination of a shoe clamp movable transversely of the shoe, adjustable stops for limiting the movementcf the clamp, amovable shoe support, and adjustable stops,

.movable With theclamp, to determining the limits'of-movement of the, shoe. support 1ndependently, of thoseofthe clamp.

9. In a machineof the class described, the

combination of a'work clamp having yielding aws for 13%11111tt111g the insertion of Work of difterent sizes, the clamp being freely .movable transversely to permit the Work tobe positioned as desired a work support freely movable transversely. to permit it to be positioned relatively to the Work, and -means for automatically locking theclamping jawsgtheclamp, and the Work support against movement, to hold the work rigidly; in .position While vbeing .op' erated upon.

In testimony ivhereof I:have signed my name to this specification.

' JOHN F. STANDISI-I.

.(Jopies of-this patent may beobtained. forfive cents each, by ,addressing the Gommissionerof Patents,

- Washington, I). C.

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