US1667761A - Leveling machine - Google Patents

Description

i Sheets-Sheet 2 )NVM/70H5.

LEVELING MACHINE Filed May 31. 1923 E. E. wlNKLEY ET A1.

May l, 1928.

1,667,761 i E. E. WINKLEY ET AL LEVELING MACHINE May 1, 1928.

Filed May 31, 1923 4 Sheets-Sheet 3 nem. l?? ll 1z0 @Ww May 1, 1928. 1,667,761

A E. E.- WINKLEY ET AL LEVELING MACHINE 4 Sheets-Sheet 4, Filed'May 31. 1923 /Nvf/v 70H5.

` lvery substantial pressure ofthe roll'on the Patented May l.,` 1928.

UNITED STATES. PATENT OFFICE.

` EBASTS EDWIN WllliiillY,l 0F LYNN., AND HERMAN AUGUSTUS DAVENPORT, 0F

"BEOCKTON, MASSACHUSETTS, ASSGNORS To U'Nirnn snor: MACHINERY CORPORA- TION, OF PATEIRSON,` NEW JERSEY, A CORPORATION NEW JERSEY,I ,l

LEVELING MACHINE.

Application led May 31,

This yinvention relates to ymachines for pressing shoes and is disclosed in its appli-Lv cation to a leveling' machine of the so-called automatic type in which va leveling` tool and a shoe carrying acl; `are automatically relatively reciprocated to cause the tool to operate over the shoe bottom in various paths. In machines of the above-mentioned type, as usually constructed, the jaclr` is moved from a kshoereceiidngl position torcarry the shoe, toe end foremost, under the leveling roll, and after suclrreciprocatory movements vas are necessary in theoperation ofthe roll on the shoe, returns to starting positionto` carry the shoe outk from under the roll. As the toe end of the shoe is carried under the roll it is necessary to guard against forcible impact ofthe roll on theend of the shoe, such for example as to bend the edge of the sole unduly and thereby damagethe shoe; and to avoid similar damage it is necessary to prevent the roll from falling abruptly from the toe as the shoe is carried out froml under the roll. To avoid such damage to the shoe, it is a common practice to jack the shoe so low that its toe end passes underv the roll.- and out from under it, Without .any

sole. As an alternative, machines are sometimes provided with a roll-receiver on the jack in front of the toe to guide the roll up. substantially to the level of the toe endV of y the sole before it engages thev shoe. f

Either of the above-mentioned expediente, y

the shoeso that there having in view-the prevention of damage to the toe end of the shoe, is open to serious objections since it is detrimental to good vork in the subsequent leveling operation. It is considered desirable for good results in leveling the toes of shoes that the leveling roll act on one side et the toe with its airis substantially inclined to the height of the shoe and then tip across the end yof the sole and act similarly on the opposite side of the toe, in order properly to close the crease between the vvelt or thesole and the upper. lf the shoe, however, is iaclred so loiv as to avoid damage to the sole at thebeginning and the end ofthe leif'elingr operation, the shoe is too lovv to receive adequate leveling pressure from the roll as the latter operates on the toe, and with the shoe in such relation tothe roll the -pressure is frequently not, as great as would '1923. serial No. 642,678.'

be desirablefon' other portions yof 'thesole On the other hand, if the ynachineis provided with a roll-rec'eivfn` in the above-mentioned relation to the toe@ tor supplement the act-ion lof themachine by'v more or less hand Work.

This invention affords 'Satisfactory results vrheretofore have' A, n I a solution of the above-mentioned difficulties by the provision of means for controlling the' relation betweenl the leveling tool and the shoe in such manner as to avoid damage to the shoe with# out objectionably limitingthe pressures applied in the leveling operation. vThe ma# chine herein shownhasv means for relieving the leveling roll and its rsupporter carrier of the force of its operating spring until after the toe end of the shoe is Iunder the y roll at the beginning'o'f the levelingoperation and when the toe passes out from under the ro-ll at the end of the leveling operation,

While rendering the spring effective at other times to applyr the required leveling pres-` sure. Still further to .assist in accomplislnl vlng the obj|ects 1n view, the invention pro@` vides means for supporting'the Lleveling tool substantially out of Contact with the shoe as thetoe passes under it or out from ,underit inthe relative movements of Athetool and isno danger of damage to the shoe by reason ofthe Weight of the tool Vand its carrier'. lWhile themachine herein shovvn thus comprises in its organi- Zation means for relieving the roll and its carrier of the force of its operating spring and means for supporting theL roll substan tially out of contact with thesh'oe at. times, as above' set forth, it Will be recognizedf'that in a substantial vdegreethe purposesfof the invention are served tures, although for isfactoryresults it is considered generally preferable to combine them.

Considered in anothery aspect, the invenby either of these fea-l better insurance of sattion provides a means, preferably resilient,

tendingl to support the leveling tool out of contact with the shoe at all times, and ak pressure mechanism for overcoming lor vinhibiting the action of this means at desired points. In the described machine, this means is a spring just strong enough to support the leveling arm, and the main pressure spring, Which is much stro-nger, compresses the Wea-ker spring when the leveling action is taking place.A

In the construction herein shown as a preferredA embodiment of the above-mentioned features, the means for controlling the level-` ing tool in such manner as to avoid damage to the shoe is independent of the shoe support, so that there is nothing in the character of the shoe support to interfere with the proper action of the tool in leveling the toe yend of the sole. The invention thus provides an organization adapted to apply proper leveling pressures to the toes ,of

shoes by the action 0f a leveling tool tipped or inclined at theopposite sides of the toe and rocked about the end of the toe in such manner as to bend the margin of the sole as much as is necessary to produce a properly closed crease.

ln another aspect, the invention provides for the automatic leveling of forepart edges by moving the center of the roll beyond the tip end of the toe so that the overhanging periphery of the roll will mold the toe end of the sole as desired. Preferably the adjustment Will be such that the slant of the overhanging periphery at such. times will be approximately the same as the inclination of the shoe engaging surface of the roll laterally of the shoe during the molding of the lateral edges ofthe forepart.

It has heretofore been impossible to level a sole edge under a horizontal as distinguished from a tipped roll,as the roll tipping mechanism has made no provision for positioning the roll Without some degree of tip on either side of the shoe when operating` on the edge. The present invention provides mechanism for such treatment of the shoe when desired.

rllhese and other features of the invention, comprising, among others, novel means for varying the leveling` pressure, and a novel gage to aid the operator in correctly jacking the shoe, Will be better understood from the following description of a preferred embodiment of the invention shown in the drawings in Which,

Fig. l isa side elevation of the machine;

Fig. 2 is a rear elevation;

Fig. 3 is a detail of the roll tipping mechanism;

Figs.` 4c, 5 and 6 are details showing the pressure mechanism;

Figs. 7, 7a and 8 are details illustratingthe passage of the roll around the toe; and

Fig. 9 is a detail of the pressure cam.

The main frame 10 of the machine has the leveling arms or roll carriers l2 pivoted by trunnions in its upper rear portion as shown at 14. These leveling arms are tubular and contain shafts 16 which at their forward ends carry the heads 18 in which the levelingr` rolls 2O are pivotallymounted. These shafts are rocltable by theseglnents 22 (Figs. V.2 and 3) mounted en them in substantial alinen'lcnt with the trunnions lll, so that 'the vertical n'iovement of the arms does not lsubstantially interfere with the rocking mechanism, the segments being operated by racks 24: for the purpose of tipping the rolls as will be well understood. This tipping movement is accomplished by a main tipping cam mounted on the main shaft 25 upon the rear side of the disk 26 as seen in Fig. 1, Which operates through link and lever connections comprising a link 28 attached Vto a crank ari n 8O on a shaft 32 carrying a slotted crank arin 34:. ln the slot in this crank arm is mounted for adjustable up ana down movement a head 52 which carries the end of a link 36 the other end of ivhichis attached 'to a rack 24. There are two racks 24 one foi1 each levelingvarm and they are connected by a pinion 38 (Fig. 3) so that their movements will be oppositely directed at all times. The adjustable end of the link 36 is universally jointed to and moved by the horizontal arm 4l() of a bell-crank having a vertical arm 412 with a roller -ffllivhich is operated by any one of four Wing cams 46 corresponding respectively to the traverses of the leveling rollover the inside and outside shank and for'ep'art of the shoe, these cams being controlled from the front of the machine by suitable adjusting mechanism and operatedby a corresponding set of fly cams, not shown, on the main shaft 25. The structure thus far described for tilting the leveling rolls will be found described fully in Letters Patent No. 889,287, issued June 2, l908, on the application of E. E. VVinkley,r to which reference may be made. lts operation may bebriefly described by saying that the main cam, through the mechanism 28-30-82, produces a standard tipping cycle, and the cams 4-6. through the mechanism 42-40-36, modify this tipping' cycle according to the setting of the head 52 produced by their action.

A novel feature introduced by the present invention involves the construction of the crank arm 34. rlhis arm entends outwardly on both sides of the shaft 32 upon which it mounted and includes tivo transverse arms 48. Upon the ends of the arms f8 is mounted a slotted bar 50 in which is mounted the sliding head 52 which carries the end of the link 36. The slot in this bar also extends to both sides of the shaft 32 so that the amount of the roll tip during the operation of the given Wing cam 46 may be reduced to zero or'even reversed if desired, by moving the head 52 into line with the shaft 32, or beyond it. This enables the operator to l high points upon the cam 98 raise the 94 vand exert pressure level an outside shank for example, vWithout any roll tip, of certain styles of slices, and hasnot here-r tofore been possible with an automatic leveling machine. I

The shoe 54 lis held` on a jack comprising a heel post y56 and a toe post 58 pivoted together at 60 to permit adj'usti'nent to accommodate different lengths of shoes and mounted on a shaft 62 which is rocked by a link and lever mechanisn'i operated by a main cam 6st and a pair of auxiliary Canis 66. rlhe jack (of which there are tivo)- and its operating mechanism ivill be found fully described in Letters Patent Nos. 1,011,301, issued Dec. i12, 1911 onY the application of E. E. VVinkley, and 1,239,664, issued Sept. 11, 1917 on the application'of' WV. C. Baxter,A and need not be further described here.

The leveling'rolls are resiliently forced doivn upon the shoe by the `pressure of springs 68 mounted in vertical channels in the main frame. These `springspress their bottom ends upon leversO pivotedv at their rear ends on the iii-ain frame 'at' 'f2 and at their front ends to vertically links l74 which are pivoted to the leveling arms 12. The upper ends of the sprin s are engaged by plungers 76 engaging screivs 78 extending upwardly in tapped ysleeves 80, pro vided with lugs 82 `with which arms 84 on a rock-shaft 86, which isv mounted'on the frame, are in engagement. The turn# ing of the screivs 78 by'handles 88 alters the distance between the lugs 82 and the plungers 76 for any given position ofthe arms 84 and thus exerts more or less pressure on the leveling arms, foryany the mechanism.

The vrock-shaft 86 is oijieratedfby a link 90 (Fig. 1) pivoted to an arm 91 on the shaft and to the -end of a lever 92 upon whiclris adjust-ably mounted the end of a link 94 having a roll 96 contacting with a cani 98 mounted on the main shaft 25. end of the link 94e has a slotted bearing on the main shaft to hold it in'position. rllhe link through the sp rings 68 upon the leveling arms and the loiv places on the cam are designed to relieve this pre-5J on certain parts ot sure to a desired extent the shoe or to remove it entirely as may desired. The cam'98 revolves once during a leveling cyclev and its highV and lo'iv points determine the pressures applied at' different atr different times Specifically, in the machine shovfn the depression 98a. i'elievesthe pressure of the spring 68 entirely at the beginning and end of the cycle, vwhen the roll is going on or coming off the toe of the shoe. The high portion 98" corresponds to the travel of the roll down theiniddle of during this cycle.

which is desirable in -thc oasev one side; 98e to extending 'i given condition of The lower i yment of the objects kof the invention.

theforepart; the .depression98` to a relief of the pressure. at the ballline as the roll passes to the shank; the portion98d tothe reciprooationfiip and down the vshank on a relief of pressure as the roll goes back over the ball; 98f'to the traverse over the'sanieside of the forepart and back to the ball on the otherside; 98g to another reliefas theroll goes back over the ballto the shankon the other side; 98h to the reciprocationof the rollover the shank ou that side; 98i to a relief in going back l over the ball and middle of the forepart to the toe.v

98j to the return ouvert-he Our invention provides,l infaccordanceg `with one feature, fortlie elimination otpres-k sure relief incidents of theleveling cycle at will, by means tion in the depressions by'bolts 98 (Fig. 9).

It is unnecessary'in the case of manyshoesl notwhaving high arched shanks to relieve thc pressure'in passing over the ball, and yin some cases such relief maybe positively undesirable. lThe removable plug 'feature thus provides for the relief of pressure or not. at the Will of the operator;l

vThe leveling arm 12v-near front 'end rests upona vertical plungeL 102 (Fig. 5)

. which is supported by a spring 41O1the pressure of which can be adjusted by a scie'iv device 106. rThis plunger is supported in a. barrel 108 mounted upon the main frame of the machine and the'spring 101i is a trifle stronger than is necessary to sustain the Weight o f the leveling arm i and i'oll.

The plunger Ahas suflicient amplitude of y movement in its barrel'to permit the entire range of vertical movement of the levelingr arm which maybe found desirable, so that When the comparatively. powerfulv spring 68 comesinto action the, spring 10-ta`nd plunger 102 do not perceptibly interfere in any Way ivith the movements ofthe arm 12 under the pressures exerted bythe spring 68Handthe shoe 54. This auxiliary spring`10st and the relief feature of the cani 98'already alludedto are very important elements in .the accomplish` A great deal of difiiculty has heretofore been experienced in leveling properly the toes lof some types of shoes because, if the roll came von the toe under pressur at the beginning of the leveling operation, it was very liable to stub the toe, by'which' is meant to strike it longitudinally, and to bruisefor deform In order to avoid, this difficulty it has been the ycustom to set the shoe so'loiv iii its jack vthat little or no pressure was cxerted bythe roll as it iveiit onl to the shoe. (the spring 68V being con'iparativelyl lightly stressed when the roll is loiv), and with the shoe positioned in thisl ,relationto the roll adequate leveling pressure was never exerted of the plugs 98k held in posi-vv on the toe, and in some cases not on other' portions. Further, as a'lready suggested, if the jack was provided with a roll receiver to guide the roll, the roll would tip around the toe with more or less pressure on the receiver instead of on the shoe, so that the toe ill) would not be treated at all or very inadequately. rllhe action ot the roll in going around the toe properly, as provided by the present invention, is illustrated in Figs. 7 and 8. Fig, shows the relation of the center of the roll to the tip end of the sole at vthe middle of its passage around the toe. It will be noticed that the center of the roll is a little ahead of the end of the sole so that an upwardly sloping portion of the periphery of the roll is in Contact with the edge of the sole. Fig. 8, which is a view taken in the direction of the arrow in Fig 1, illustrates the tipping of the roll around the end of the toe. It will be seen that there is nothing' about the toe to interfere with the tipping of the roll. The present invention, as already explained, in its illustrated embodiment provides that the pressure due to the main spring 68 is relieved entirely as the roll goes 0n to the toe, but this condition is only temporary and lasts only until the roll has gone on t0 the shoe. The auxiliary spring 104 lifts the leveling arm and roll to their limiting upward position when the main spring pressure is removed and thus enables the roll to pass on to the toe under no pressure whatever without any lowjacking of the shoe and consequent diminishing of the effective pressure of the roll in the remainder of the leveling operation. 1ndeed, the parts and shoe can be so adjusted that the roll is spaced a substantial distance above the toe end of the sole as it passes over it at the beginning, and so that, as the pressure goes on, it will initially strike an actual blow on the sole at the toe, thus simulating the effect of the hand hammer which has always had to be used at this point on many shoes. It should be noticed that the disclosed machine has no roll receiver in front of the toe, this member being quite unnecessary where the present invention is used.

The shoe will preferably be jacked so that its toe is in such relation to the center. of the roll, asthe roll acts 0n the end of the sole, that the tangent to the roll periphery lying in a vertical plane containing the long axis of the sole at the point of contact of the roll periphery and the sole will have about the same inclination to the horizontal as that of the shoe engaging surface of the roll as the roll treats the side edges of the forepart. Thus the overbending of the sole edge is secured at the sides of the sole by the roll tip and is secured at the end by the overhanging circular periphery ofthe roll.

F ig. 7a shows a more extreme condition than Fig. 7, secured by jacking the shoe a little farther back. u

The leveling roll 20 itself is mounted in a carriage or head 110 having arcor segmental shaped lateral extremities at 112 whereby it may be rotated about `a vertical axis in the head 18 and held in adjustable position by a screuI and slot arrangement at 114. This enables the roll to be adjusted to suit certain kinds and conditions ofV work. The roll may be adjusted, for example, 'so that its axis extends substantially `in the same direction as the ball line of the shoe and is substantially parallel to the heel breast line as the roll operates at the shank of the shoe, such adjustment ofthe roll being maintained throughout the leveling operation, so that the roll in operating at the toe has its axis more .nearly parallel to the edge line of the sole at the outer side of the toe than tothe edge line at the inner side.

A pad 116 rests upon the top of the roll to wipe ofiA dirt. A gage 118 is mounted in the head 11() to extend outwardly over the front of the roll and serve as a guide for the jacking of the toe end of the shoe so that it may be properly placed horizontally and vertically prior to the beginning ,of the leveline; operation.

The toe post 58 has at its upper end a socket 120 arranged to hold a rubber toe pad 122, which is the sole invention of Herman Davenport, and is described and claimed in Letters Patent N o. 1,602,393, granted on October 12, 1926.

Having described our invention, what we claim as new Patent of the United States is 1. In a leveling machine, a shoe support, a leveling tool, means for automatically producing relative traverses of the leveling tool and a shoe on the support, mechanical means for exerting pressure on `the shoe through the tool, and means construct-ed and arranged substantially to relieve the pressure due to said means as the tool passes on to the shoe at the beginning of the operation.

2. 1n a leveling machine, a shoe support, a

leveling tool, means for relatively n'iovingVy the support and tool to cause the tool to cross the sole edge of a shoe on the support at the beginning of the leveling operation,

means for exerting pressure between the shoe and tool during the leveling operation, and means for holding the tool out of contact with the sole edge as it passes across it at the beginning of the leveling operation.

3. In a leveling machine, a slice support, a levelingy tool, means for relatively moving' the support and tool to cause the tool to cross the sole edge of a shoe on the support at the beginning of the leveling operation, and a resilient device for support-ing the tool out and desire to secure by Letters at the beginning of of `contact with the shoe at the time described.

4. In a. leveling machine, a shoe support, a leveling tool, means for relatively Vmoving the support and tool to cause the tool. to cross the sole edge oit a shoe on the support Y the leveling operation, a continuously acting Adevice for supporting the tool out of contact with the-shoe, a presf sure device tending to torce the tool into contact with the shoe, and means for causing the effect of the lirst said device to predominate at the beginningl oi the leveling operation.

5. ln a leveling machine, a shoe support, a leveling tool, means tor relatively moving the support and tool to cause the tool to cross the sole edge oft ashoe on the support at the beginning or the leveling operation, a continuously acting deviceA for supporting the tool out oi' Contact with the shoe, apressure device tending to torce the tool into` contact with the shoe and arranged normally to predominate in eliect over the first said device, and means for reversingthis condition .of predomination as the tool passes across the sole edge at the beginning of the leveling operation.

v6. ln a leveling machine, ashoe support, a`

leveling tool, means for relatively moving the support and tool, to cause the tool. Vto cross the sole edge ol a shoe on the support at the beginning ot the leveling operation, a resilient member arranged to support the tool so that substantially no pressure. will be impressed on the `sole edge at the instant oit crossing it, a. pressure mechanism for normally eil'ect-ing pressure between the tool and the Shoe, and cam operated means for.

rendering the pressure mechanism inoper-y ative at the said instant oft crossing.

7. In a leveling machine, a shoe support, a leveling arm pivoted for vertical movement substantially perpendicular to the sole toil" a shoe on the support, a resilient device arranged to support said arm so as to hold a tool acrried thereby at or above the level of thesole edge oi' a shoe on the support,

means for eifecting relative moven'ient of.

the arm and the shoe, a pressure device rarranged to exert pressure on the arm to torce it `toward the shoe and normally Ato operate said arm irrespective oit. the stress exerted by the resilient device, and a cani and connections for controlling the pressure device arranged to render it ineffective as regards opposition to the resilient device at the instant of the crossing oi the sole edge by the tool.

8.1n a leveling machine, a shoe support,

a leveling yarm pivoted Jfor vertical movee mentsubstantially perpendicular to the sole of a shoe on the support, aresilient device arranged to carry substantially the entire weight of the yarm and to hold it upout of pressing relation to the shoe at t-he instant of the crossing of the sole edge b a tool on the leveling arm, a spring for orcing the leveling arm down toward the shoe and substantially stronger than the resilient device so that the latter is ineffective to hold the arm up whenthe spring is in operation, and a cam and'connections for putting the. spring outof action atthe said instant of crossing.

.9. .In a leveling machine, a leveling arm mounted onl a'liorizontal pivot to move vertically, a jack on a horizontal pivot, arranged to carry a shoe back and' forth underia roll mounted on the ar1n,ak.spring connected with the arm arranged to support it at the upper limit of its vertical path, ya second and much stronger spring arranged to. torce the leveling arm downward toward theshoe, and means for vrelieving'the pressure of the stronger spring at the instant the tool crosses' a leveling roll, means for efecting relative traverse between the roll and a shoe on the support, and means for tipping the roll about an axis generally parallel .to the length oi' the shoe, comprising a main roll tipping cam, .a lever connected therewith, and a. head adjustable' along the lever and yconnectedto the leveling roll, said .head and lever being constructed to permit the positioningvof the head at the pivot of the lever, if desired, to counteract the laction of the main tipping cam. y y

12. In a leveling machine, a shoe support, a leveling roll, means for effecting relative traverse between ythe roll and a shoe on the iou' support, means for tipping the roll about anl axis generally parallel to the length of the shoe, comprising a main roll tipping cam, a. lever connected therewith, and a. head adjustable along the lever and connected to the leveling roll, said head and lever being constructed tok permit the positioning of the,head,'in line with the pivot of the lever if desired, and automatic means for ei'ecting the positioning of the head during the operation of leveling a shoe.

13. In leveling machine, a shoe support, leveling roll, means for effecting relative traverse between the roll and a shoe on the support, means for tipping the roll about' an axis generally parallel to the length of the shoe, comprising la main roll tipping cam, a lever connected therewith, and a head adjustable along the vlever and connected to the leveling roll, said head and lever being constructed to permit the positioning otl the head in line With the pivot of the lever if desired, and adjustable means tor automatically effecting the positioning oli' the head during the operation of leveling a shoe.

14. lin a machine of the class described, a shoe holding jack, a leveling arm, a tool on the arm, and a gage in operative relation to the leveling tool and jack to determine their relative adjustment prior to the beginning ot the leveling operation.

15. In a machine of the class described, a shoe holding jack, a leveling arm, a tool on the arm, and a gage mounted on the arm in operative relation to the jack to determine the relative adjustment ot the shoe and tool prior to the beginning ot the leveling operation.

16.111 a machine oit the class described, a shoe holding jack, a leveling arma tool on thearm, and a gage adj ustably mounted on the arm in front of the tool to determine the height to which the shoe is to be set prior to the beginning of the leveling operation.

17. In a leveling machine7 a shoe support, a leveling tool, means for automatically producing relative traverses of the leveling tool and a shoe on the support, means for tipping the tool around the toe 'of the shoe as it passes from one side of the torepart to the other, mechanical `means for exerting pressure on the shoe through the tool, and means constructed and arranged substantially to relieve the pressure due to said means as the tool passes on to the shoe at the beginning of the operation.

18. In a leveling machine, a shoe support, a leveling tool, means lor relatively moving the support and tool to cause the tool to cross the sole edge ot a shoe on the support at the beginning of the leveling operation, means for exerting pressure between the shoe and tool during the leveling operation, means for carrying the 'tool around on the end of the toe during the leveling operation, and means for holding the tool out of contact with the sole edge as it passes across it at the beginning of the leveling operation.

19. ln a levelingv machine, a shoe support, a leveling tool, means for relatively moving the support and tool to cause the tool to cross the sole edge of a shoe on the support at the 'beginning' of the leveling opera-tion.

means 'for traversing and tipping the tool around on the end oi the toe of the shoe` and a resilient device for supporting the tool out ot contact with the shoe at the said beginning of the operation.

20. ln a. leveling machine, a shoe support, a leveling tool, means for relatively moving the support and tool to cause the tool to cross the sole edge of a shoe on the support at the beginning of the leveling operation,

means for exerting pressure between the shoe and tool during the leveling operation, means tor hoiding'the tool out of contact with the sole edge as it passes across itat the beginning of Athe leveling operation, and meansy for abruptly establishing pressure ben tween the tool and the sole immediately a'ter said passage.

21. In a leveling machine, a shoe support,

a leveling arm pivoted for vertical move ment substantially perpendicular to the solev oit a shoe on the support, a resilient device arranged to carry sul'istantially the entire weight oi the arm and to hold it up out oft pressing relation to the shoe at the instant of the crossing of 'the sole edge by a tool on the leveling arm, a spring for forcing the leveling arm down toward the shoe and substantially stronger than the resilient device so that the latter is ineffective to hold the arm up when the spring is in operation, and a cam and connections for putt-ing the spring out oi action at the said instant of crossing, and l'or abruptly restoring the action ol the spi-inol immediately a'iter the said instant ot crossing.

22. ln a leveling machine, a shoe support, a leveling tool, means for relatively moving the support and tool to cause the tool te cross the sole edge ot' a shoe on the support at the beginning olf the leveling operation,

tact with the shoe at the time described, a

pressure device tending to torce the tool into contact with the shoe and arranged normally to predominate in eilect over the 'lirst said device, means for reversing thisfconditiou oit' predoinination as the tool passes across the sole edge at the time described, and means for abruptly restoring the said con.- dition immediately after the said passage.

23. In a machine olf the class described, a shoe support and a roll and means automatically to eiiect relative traverse of a shoe on the support and the roll in such manner that the center ot the roll passes beyond the toe tip as the Atoe tip is being leveled,to bend the sole at the toe tip by the overhanging periphery of the roll.

Q4. In a machine of the class described, al

lshoe support and, a roll and means automatically to effect relative traverse of a shoe on the support and the roll and to tip them relatively during the traverse, the shoe support, roll and traversing means being organized to carry the center of the roll beyond the tip ot the toe, as the toe'is being leveled, to such an extent that the toe tip ot thesole is bent by the over-hanging roll periphery to substantially the same extent that the lateral edges of the forepart are bent by t-he relative tipping of the shoe and roll.

25. `ln a machine ot the class described, a

shoe support, a roll, and means automatically toV eiect relative traverse of a shoe on the support and the roll, all constructed and arranged to move the center of the roll beyond the toe tip to a predetermined extent, and means ior tipping` the roll, whereby the toe tip is molded by relatively tipping the roll across the toe-tip while its center' is beyond the toe tip. I

26. In a machine o't' the class described, a shoe support, a leveling tool, means for e'ltecting relative traverse of the tool and a shoe on the support, a pressure mechanism for eiiectiug pressure between thetool and the shoe, comprising means for approximately removing all pressure exert-ed by the meclianism at predetermined points, and means ilor inhibiting the action oi the pressure removing means at the will of the operator. y

S27. ln a machine o'i the class described, a shoe support, a. leveling tool, means for et'- viecting relative traverse or' the tool and a shoe on vthe support, a pressure mechanism tor eliectiiig pressure between vthe tool and the shoe,comprising means for varying the pressure from `point to point on the shoe, and means 'tor inhibiting selected pressure variation incidents at will.

28. in a machine of the class described, a slice. support, ra leveling tool, means for elf- 'lecting relative traverse of the tool and a shoe on the support, a pressure mechanisi'u 'tor e'ticcting pressure between the tool and the shoe comprising acam, and means ior locally varying the shape of the cani.

2t). 'in a machine of the class described, a shoe support, a leveling etl'ectinn; relative traverse of the tool and a shoe on the support, and a pressure mechanism for eii'ecting pressure between the tool and the `shoe con'iprising a cam arranged for the insertion ot one or more auxiliary pieces ior the purpose of ei-l'ecting local alterations in its contour.

3i). ln a machine of the class described, a shoe support, a leveling tool, means for eiiecting relative traverse of the tool anda shoe on the support, a pressure mechanism for effecting pressure between the tool and the shoe comprising a cam, and detachable cam members tor the cam whereby its configuration may be locally alter-ed.

3l. ln a machine of the class described, a shoe support, a leveling tool, means fo eiiecting relative traverse of the tool and a shoe on the support, a pressure mechanism for eiiiecting pressure between the tool and the shoe comprising a cam having notches corresponding to incidents ot' the pressure cycle, and a plug arranged to i'ill a notch to inhibit the corresponding pressure incident.

32. ln a leveling machine, the combination with a shoe support and a leveling tool relatively movable to position the tool over tool, means tor.

the bottom of a shoe and then to cause the tool to operate `along the shoe bottom, of automatic means ytending to determine a@ 1 relation between `the shoe and the tool such the tool on the shoe until after the tool is over the edge of the toe end of the shoe bottom.

2A. ln a leveling machine, the combination with a leveling tool, of a shoe support constructed to leave the end and the sides et the toe ot a shoe tree to permit the tipping of the tool about the toe for leveling the edge of the sole, means tor effecting relative movement olf the shoe support and the tool l lengthwise oi the shoe to position the tool over the toe end of the sole and then to cause the tool to operate along the sole, and means for positioning the tool in such relation tothe shoe to prevent substantial pressure ot the tool on the shoe until after theitool is over the edge of the sole and 'tor then bringing the pressure of the tool to bear upon the sole.-

35. lin a leveling'A machine, the combination with a shoe support and a. leveling tool relatively movable lengthwise of a shoe to position the tool over the toe end of the sole and then to cause the tool to operate along the sole, of spring means for pressing the tool forcibly upon `the sole, and mechanism operative in time relation to the relative movement of the tool and the shoe lengthwise ot the shoe to relax the force of said spring means until after the tool is over the edge ot the sole and then substantially to increase the force ot said-Yy spring means.

In a leveling machine, the combination with a shoe support and a leveling tool relatively movable lengthwise-of a shoe to position the tool over the toe end of ,they shoe bottom and thereafter to cause the tool to operate along the shoe bottom and then to restore the parts to starting position, 'of spring means ior pressing the tool forcibly upon the shoe bottom,` and automatic mechanism for relaxing the force of said spring means when the tool crosses the edge of the toe end of the shoe bottom both at the beginning` and at the end of the leveling operation.

37. In a leveling machine, the combination with a shoe support and a leveling tool lao relatively movable lengthwise of af shoe to level, the shoe bottom and ii'nally to cause the tool tofcross the edgeof the; shoe bottom in the return of the parts tol starting position, oli spring meansl for pressing the tool forcibly upon. the shoe bottom,` and. automatic mechanism for relaxing the force ot said spring means when the tool crosses said edged tofprevent dama-ge to the` shoe.

38. ln a leveling machine, the combination with a shoe support and a4 leveling tool relatively movable lengthwise of a shoe to level the sole thereof, olil automatic means independent oi.I theshoe support tending to support the tool out of contact with the shoe at all times, and pressure means lor nevertheless bringing the tool into operative pressing` relation to the shoe wherever desired.

39. ln a leveling machine, the combination with ashoe support and a leveling tool relatively movable lengthwise of a shoe to position the tool over the toe end of the shoe bottom. and then to cause the tool' to operate along the shoe bottom, ot' constantly acting` resilient means forsupporting the tool in a position higher than it occupies in. leveling the toe end of the shoe bottoni, and means ior 'lorcing'the tool downwardly against the resistance ot said resilient means to apply leveling` pressure only after the tool is positioned over the toe end of the shoe bottoni.

40. In a leveling machine, the combination witha. shoe support and aleveling tool -relatively movable lengthwise oil a shoe to level the shoe bottom and finally to cause the toolf to cross` the; edgei of theshoe bottom in the return oi the parts. toty startingl position, of automatic means for positionngjthe shoe and the tool insuoh relation. as to prevent substantial pressure of the tool oni the shoe as the tool crosses said.- edge without substantially affecting thesubsequent leveling pressure applied to the shoe;l

-l-l. ln a leveling machine, the combination with a shoe support and a leveling tool relatively movable lengthwise of. aA shoe, of; mecl'ianism for effecting relative tipping movement of 'the shoe and the toolt'o-ineline the tool relatively to thebottom faceo'f the sole iny operating on,` the side edges ofLA the sole,v said mechanism being so constructedl as. to permit relative positioning of the shoeand the tool with the tool substantially parallel to the bottom face of the sole in operating` on the side edges of thesole.

42. ln aL leveling machine, the combina,- tion with a shoe support and a leveling roll' relatively movable lengthwise of a: shoe, of automatic roll tipping mechanism for positioning the roll with its axis inclinedA relatively to the bottom l'ace of the sole in operating on the side edges of the sole, said roll tipping` mechanism being so constructed as to permit the roll to be positioned with its axis substantially parallel to the bottom face oil? the sole in operating on the side edges of the sole;

lfn testimony whereof we have signed our names 'to this specification.

` ERASTUS EDWlN W-lNKLEY.

HERMAN AUGUSTUS DAVENPORT.

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