US925509A - Sole-leveling machine. - Google Patents

Description

J. H. RIGBY. SOLE LBVELING MACHINE.

APPLIUATION' Hman AUG'. 17, me.

Patented June '22, 1909.

3 SHEETS-@HEBT 1.

Z/messe J. H. RIGBY. SOLE LEVELING MACHINE.' AlfPLIoA-TION ULEB AUG. 17. 1908.

925,509. Patent-,ea June 22, `1909.

a SHEETS-SHEET a.

,zz i -E 3 I I r d 720 I I UNTED STATES JOHN H. RIGBY, OF LYNN, MASSACHUSETTS,

Parana? onnicn.

ASSIGNORTO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SOLE-LEVELING MACHINE.

I Specification of Letters Patent.

Patented :rune 22, 190e.

Application filed August 1'7, 1908. Serial No. 448,836.

l useful Im rovements in Sole-Leveling Machinos; an l do hereby declare the following to be a full, clear, and exact description of the invention, such as Will enable others skilled iii the art to which it appertains to make and use the same.

This invention relates to sole leveling machines and more articularly to that class of sole leveling mac ines which comprise a sole leveling tool and a shoe supporting jack, relatively movable to change both the relative. vertical and longitudinal positions of the leveling tool and ack. In this class of leveling machines the desired amount of pressure on the sole of the shoe is secured by means of a s ring, the tension of which may be initia y varied to suit the class of work being operated on, but which is maintained at a substantially constant tension for all shoes of the same class. rlhe inward limit of vertical movement of the relatively movable parts is determined b a stop which may be adjusted to vary sucfiv limit, as may be required by a change in the class of shoe being operated on. As `these machines have been constructed heretofore, a change in the position of the stop to vary the inward limit of movement of the relatively movable parts also varies the amount of pressure a plied to the shoe. This is undesirable as t e initial setting of the pressure mechanism regulates its amount so that the best results will be obv tained from the pressure thus determined,

and any variation in the amount of pressure will, therefore,'result in poorer work. In the earlier machines this defect4 could be overcome by a separate readjustment of the ressure mechanism when the stop Wasjadjusted, but fre uently the operator failed to make such readjustment.

The principal object ofthis invention is to provide means for insuring a retention of the amount of pressure for which the pressure mechanism is-initially set, nomattei' what the adjustment of the means 'for varying the inwar limit of vertical movement of the relatively movable arts'inay be, thus avoidof the pressure mechanism.

`Another object of the invention is to pro- 55 vide a stop and a pressure mechanism for the purposes described, which may be adjusted either simultaneously or independently at the will of the operator.

l/Vith these objects in view, actuating me ans 6 O have been rovided between the means for i adjusting t 1e stop and the means for adjusting the pressure mechanism by virtue of which an adjustment of one of these devices necessitates a simultaneous and proportionate adjustment of the other to suit the new conditions. The actuating means is detachably connected to the adjusting means for the pressure mechanism and detached when therefrom the amount of pressure to be a 70 plied to the shoe may be varied independent y of any adjustment of the stop.

The invention is intended primarily for use in turned shoe work and has, therefore, been illustrated -as applied to a machine rovided l `with a longitudinally movable jac and a vertically movable leveling roll, suoli, for instance, as the sole leveling machine disclosed in the coending application of -Andrew Eppler ile May 8, 1906, Serial No. 315,024,

although it should be understood that, except as defined in the claims, the invention is l not limited thereto but may be employed in other sole leveling machines provided with adjustable pressure lmeans and means for varying the initial relative vertical position of the workand tool. l

In addition to the features of the invention already referred to, the invention consists in certain devices, combinations and'arrange- 90 ments of parts hereinafter described and claimed, the advantages of which will be 0bviou-s to those skilled in the art. y

The preferred embodiment of the invention is illustrated in the accompanying. drawings l Y Figure' l is a side elevation of .the machine, Fig. 2 is a plan ofthe parts shown in the up- I per portion of Fig. 1, Fig. 3 is aside elevation of the parts comprising the present improvement, and Fig. 4 is an enlarged detail on the line 4 4.- of Fig. 2.

ln the embodiment of the invention illustrated in the drawings, a leveling roll Ris supported on the forward end of the frame F j pivoted at l to the frameA of' the machine. ing the necessity o a separate readjustment j The roll carryingframe .F is counterbalanced "l by a spring F suitably connected to the` frame of the machine and the rear end of the frame F. The shoe to he operated on is supported upon any convenient forni of jack indicated. by J, which. jack is sustained in a jack carrying frame J pivoted at 2 on the machine frame in a manner to provide a relative longitudinal movement between the shoe and the leveling roll. The. iaclr frame is oscillated about the pivot 2 by means of a reversible friction driving mechanism, indi cated at D, which, through suitable connections, oscillates a cra-.ilr C carried by shaft 3 and connected to the jack frame hy means oi a linlr Ll. The reversible friction driving 1.5 mechanism. is operated through belting B en aging suitahly arranged pulleys and driven ilroin the driving shaft -3joiii1ialed in the lower portion of the machine trame. This mechanism is controlled hy means of a handle H, Suit-ably arranged helting i3 from the driving shaft S imparts a continuous rotation to the leveling roll. .i'iutomatic mechanism for preventing ovcrthixw ol. the iaelr frame in case the operator does not move the handle ll at the proper time is indicated at O.

All of the parts just described may he and preferably are substantially the saine similar' parts fully illustrated and described in the co-pending application -of Andrew Eppler, hereinbcfore referred to.

The mechanism for providing the desired pressure 1hetween` the leveling roll and the shoe and for imiintainiiigr the roll in. contact wi th the shoe during` the leveling operation is substantially similar to the mechanism used for this purpose in the co-pending application of Andrew Eppler, hereinhefore referred to, but it is essentially difl'erent in some respects 4G as will hereinafter appear. The roll carryingr frame l" is connected to a treadle "il pivoted at 5 in the lower part of the frame of the machine by means of a. yielding linlr connection.

This connection comprises ahousing d. con-4 neeted at its lower end to the treadle hy' means of a link 7, and closed at its upper end except for an openingy through which extends a rod 8 the upper end of which passes through an opening in the frame F. A hand wheel 9 is keyed to the upper end of this rod by means voi which it may be rotated. A coil spring i() surroundsthe rod 8 within the housing, the closed upper end of the housing forming,r the upper end bearing for this spring and a block rl1, assed through dian'ictrically opposed vertically arranged slots it?, in the housing and threaded on the lower end of the rod,

*forming the lower end bearing for the spring. l

The spring l() is normally under tension, Whichftension is determined by an adjustment ofthe block 11 by means oi the hand wheel 9, and the trcadle thereby held in contact with thc under side of a stop '.l" at the front of the .machine trame (scdottcd lines in Figs. l and 2), Thostop 'll' serves to senseo limit the upward movement of the treedle but permits a free downward movement thereof.

in performing the leveling operation, as the jack is oscillated back and forth beneath the rotating roll, the pressure on the shoe varies somewhat, Because oi' the fact that the treadle is held from upward movement by the stop fl", the tension of the pressure spring is increased as the roll is raised hy thc hall et the shoe passingI under it hut the spring expands again as the roll is lowered when it passes into the 'shank of the shoe. if it is desired to place more pressure on the shoe than afforded by the tension of the pressure spring, as is frequently necessary at the shank of the shoe, the operator. depresses the 'treadle during this part of the leveling operation, thus further increasing the tension on the springl 10 and the pressure applied to the shoe. It has been found in performing the levelingr operation, that the various classes of work operated on require yvaryingI amounts ot pressure from theroll lt and,

"uefore, the tension of the pressure spline is ini tialiy set, hy an adjustment of the blocI i il, to all'ord the required pressure for the particular class of work in hand.

A. stop is usually provided to limit ilui downward vmovement of the leveling roll when disengaged from the shoe and the pres sure mechanism is adjusted in` accordano. with this position of the roll so that the le quired pressure will he applied whenI the niuchine is set in operation. lt will hc 'obvious to those skilled in the art that when varyingr sizes or styles of vshoes are jacked, their heights, relative to the lowermost prelimi nary position ol the leveling,r roll `as determined hy the stop, will vary and, therefore, this position. of the roll should be varied to suit cach new location of the work. With the construction of the pressure mechanism heretofore described, a vertical movement of the roll carrying,r trame F to vary the limit of downward movement of the tool will alter the tension of the pressure sprinu 1() by changing the distance between the hloek 11 and the upper closed end of the housing thus changing the amount of pressurethat will be apalicd to the shoe. In order to maintain the same pressure on the shoe as had before been used, notwithstandingr the n variation inthe initial vertical position ofthe roll, it wz s necessary, with the form ol' stop heretofore in use, 'to readjust the pressure mechanism bf restoring the pressure spring to its initial tension. lt the o )elator tailed to so readjust the pressure mechanism, and a shoe higher than the shoe previously in the machine were being operated on, the increased pressure caused by a raising of the leveling` rhll to suit the new work might pos sibly be injurious to the shoe. lf the new shoe were lower than the shoe previously in ilk" the machine, a lowering of the leveling roll without a readjustment of the pressure mechanism would decrease the pressure and the sheemight not receive enough pressure to properly level it. This serious defect is overcome in thepresent invention by providing means Afor insuring a retention' of the initial adjustment of the pressure mechanism, no

matter for what'limit of vdownward movement of the leveling roll may be set. The roll carrying frame F is provided with a lug 13 at one side through which is passed a stem 14, having a hand wheel 15 ke ed to it above 'the frame, and provided wit an enlarged and tapped end 16 below the frame. This arrangement permits rotation of the stem 14 but prevents a lengthwise movement thereof. The shank of a stop 17 is threaded into the tapped endl. The stop 17 is provided with a depending portion 18 whichfits into a longitudinal'slot 19v in the upper surface of a bracket 20 secured to the frame of the machine. This arrangement permits lengthwise movement of the stop device but events its rotation. Thus the sto i 17 may e adjusted toward or from the bracket 2Q by a rotation of the handjvheel 15. A pinion 21 is keyed to the'stemn14 above the frame F and lthis inion meshes with an idler pinioi 22 rotata ly mounted in the frame. Th idler pinion in turn meshes with a pinion 23 having a collar journaled in the frame F and loosely surrounding the rod 8. Sufficient space between the rod and collar of the inf ion is provided to permit play between t iese arts as theframe is moved vertically about its pivot. The pinion 23 is secured in liXed relation to the hand wheel 9 by means of a removable pin 24 passed through a hole in the and into one of a series of holes hand Whee 25 in the upper face of the pinion. A latch 26 is fulcrumed on the frame F in a position -to engage between the teeth of the idler pinion22 thus locking all of said pinions against rotation and maintaining them in any@ adjusted position. With this construction a rotation of the hand wheel 15 to adjust 'the length of the stop device and thus varyfthe limitof downward movement of the leveling roll -will also, when the latch 26 is removed fromj locking position and the in 24 is resting'in one of thefholes 25 of t e inion 23, caus'efa rotation of the rod 8. Ifptheflimit of `downward movement of the leveling roll is elevated, thus lengthening the yielding link coniiection, the rod 8 will be rotated in a direction to cause it to be simultaneously unscrewed from the block 11.

lf the limit of downward movement of the roll is lowered, thus shortening the yieldinglnk connection, the rod 8 will be' rotated in a direction to causeit to be simultaneously passed through the block 11. The pitch of the threads on the stop 17 and the. rod 8 is the same and,

therefore', for every increment of movementI of the frame F there is a corresponding incre` ment of movement of the rod 8, in one direction or the other, through the block 11. With this arrangement of adjusting mechanisms the block 11 is always maintained at a Mconstant distance from the upper closed end of the housing 6 throughout al variations in the initial position of the leveling tool. This insures a constant tension on the spring 10 no matter what vertical position the frame F may preliminarily assume. Those skilled in the art will readily see'that if the pressure mechanism is initially set for a .particular class of work, its initial adjustment will be retained no matter in what vertical position the leveling roll may be placed in order to properly operate u on varying heights of shoes of any particu ar class. The actuating devices connecting the stop device and pressure mechanism constitute, therefve, automatically acting means for nullifying the effect on the'pressure mechanism caused by anl adjustment of the stop.

By removing the connectin `pin 241, between the hand wheel 9 and te pinion 28, the pressure mechanism may be adjusted independently of the adjustment of/ the This feature of the invention is `of pressure required for the particular class of work to be operated on.

.In the following claims, all references to position or direction of movement of the elements are to be interpreted as terms of designation and not of limitation, as' obviously it is the relative position or relative direction of movement which is alone of im iortance.

ilVhile the 'particulars yof construction vherein set forth are well suited to one form of the invention, it is not to be understood that these particulars are essential since they may be variously modiiied within the skill of the artisan without departing from the true scopeof the actual inventionas de'- i'ined by the following claims. -What is claimed as new is 1. A sole leveling machine, combination, a shoe supporting jack and a sole leveling tool relatively movable both vertically and longitudinally,v ressure mech--` anism for forcing one of sai( parts toward.

having, in

the other to exert pressure on the sole of the shoe, a stop to determine the proipei r relative vertical position of said parts w ist the leveling tool is disengaged fromthe s hoe,

means for adiusting said stop to position th` parts properly for different-shoes, and means acting simultaneously toadju'st the pressure mechanism to cause it to exert substantially the sameA pressure on the dif ferent shoes. l

2. A sole leveling machine, having, in combination, a shoe supporting jack and a sole leveling tool relatively movable both vertically 'and longitudinally, an ladjustable stop todeterminc the inner limit of vertical movement of said parts when the tool is disengaged from the shoe to accommodate g shoes of different heights, a yielding link, connected at one end to one of said parts and held at its other end from movement toward said part, to force said part toward the other during the leveling operation, and

a single means to adjust the stop and simultaneously to adjust the link to secure substantially the same pressure on the. shoe Whatever its height may be.

3. A sole leveling machine, having, in combination, a sole leveling tool and a shoe supporting jack relatively movable longitudmally, a frame carrying the leveling tool movable toward and from the sole of thel shoe, a stop for said frame to limit the downward movement of the-tool when disengaged from the shoe, an extensible link connected at one end to said frame and held at itsj other end from upward movement, a spring in said link, means for tensioning said spring to exert pressure on the. sole of the shoe during thc leveling` operation, means for adjusting the sto i to position the tool properly for shoes of different heights, and means controlled by said sto) adjusting means for insuring a substantialfy constant tension on said spring prior to the leveling operation for all heights of shoes.

4. A sole leveling machine, having, in combination, a. sole. leveling tool, a shoe supporting jack movable longitudinally beneath the tool, a frame carrying the tool movable toward and from the soleA ofthe shoe, a stop for the tool carrying frame to determine the l position ot' the tool with relation to the sole of the shoe when disengaged therefrom, a treadle, a yielding link connection between the treadle and the tool carrying frame for forcing the tool against the sole ot' the shoe, means for adjusting the stop to position the tcol properly for different shoes, and means acting simultanemislyv to adjustthe link connection tosecuresubstantiallythe same pressure on the different shoes.

5. A. solel leveling machine, having, in come" bination, a shoe supporting jack and a sole leveling tool relatively movable both vertically and longittulilmlly, means preliminar-ily to determine the. inner limit of vertical movement of said parts when the tool is disengaged from the shoe, )ressure mechanism for forcing one of said ment is varied, and automatically,acting parts toward the: other during the leveling operation con-5 structcd and arranged so that thc amount of pressure to l i applied to thc shoe will bey f, varied as the inner limit of verti'fal movei l means for nulliiying the effect on the pressure mechanism caused by an adjustment of the stop, i

6. A sole leveling machine, having, in combination, a sole leveling tool anda shoe su porting jack relatively movable longitu inally, an adjustable stop device prelimmarily to determine the proper vertical position of j the tool relative to the shoe sole before it engages the sole, mechanism for applying pressure to the tool during theleve'ling Operation constructed and arranged to have its strength varied by a variation in the vertical position of the tool, and means oonsure mechanism caused by an adjustment of the stop.

7. A sole leveling machine, having, in combination, a sole leveling tool, a shoe sup orting jack movable longitudinally beneat the tool, a frame carrying the tool movable ton ward and troni the sole of the shoe, an adjustable and yielding link connected at one end to said frame and held at its other end from upward movement, to force the tool toward the shoe during the leveling operation, a stop also connected to said frame to determine the position of the tool relative to the sole of the shoe when disengaged therefrom, means for adjusting said stop to position the tool properly for diHerent shoes, and operative connections between said stop and link whereby an adjustment of the stop effects a simultaneous adjustment of the link lo exert substantially the same pressure on the dilferent shoes.

S, A sole leveling machine, having, in combination, a shoe. supporting jack and a sole leveling tool relatively movable both vertically and longitiulinally, pressure mechanism for forcing one of said parts toward the other to exert pressure on the sole of the shoe, an adjustable stop preliminarily to determine the inner limitof vertical movement of said parts before engagement of the tool and shoe to accommodate shoes of different heights, means for simultaneously adjusting said stop and pressure mechanism to position the parts for shoes 0f different i heights and to secure substantially the same pressure on the shoe whatever its height may 'be, and means permitting an independent adjustment of said stop and pressure mechanism.

`ln testimony whereof ,l allix my signature, in presence of two witnesses,`

yJOHN' ll. ltlGlSY.

it nesscs: n.

Fnmmuiok l. lCnMANos. .lanas ll. llo'nnnn.

nectmg said stop device and pressure mech.v anism acting to nulhly the efect on the presiV

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