US2460933A - Leveling machine - Google Patents

Description

Feb. 8, 1949. F. 'v. HART LEVELING MACHINE 5 Sheets-Sheet 1 Filed Nov. 1, 1947 In ventan Fre d V. Ham

Feb. 8,1949. F. v. HART LEVELING MACHINE Filed Nov. 1, 1947 5 Sheets-Sheet 2 [rl van i01 Fred M 170.7 Z-

Feb. 8, 1949. F. v. HART LEVELING MACHINE 5 Sheets Sheet 5 Filed Nov. 1, 1947 frzvehfan 7 Fred \ll'lafit eb- 1949- F. V.'HART 2,460,933

LEVELING MACHINE Filed Nov; 1, 1947 5 Sheets-Sheet 4- ni -l 7159.8. In vemm Y Fred V. Hart Feb. 8, 1949. F. v. HART LEVELING MACHINE 5 Sheets-Sheet 5 Filed Nov. 1, 1947 In van for Fred If Hart Patented Feb. 8, 1949 PATENT QFF ICE.

LEVE IHWG Fred V H'art, Lynn, Masse assign) to United Shoe Machineryfiorpo'ration Flemington,.N. a corporation (if-New Jersey Applicatiort now-renter 1, 1m, Sefimf-Nm teams This invention relates to machines for opera'ting-v upon shoes, and more particularly to ma chines for shaping or levelingthe bottoms of shoes, The invention is illustrated herein with reference tothat type of machine in which the bottom of a shoe is acted upon by alevelingf roll,

the roll: being mounted for movementslengthwiseof the shoe and for tipping movements trans versely of the shoebottoma- It is an object of the invention to: provide an improved machine of the type referred toabove inwhich movements of the roll lengthwise of the shoebottom are efiect'ed by power opeiated' means which is in turncontrolled by a manual operating member in such manner that the rollis moved into positions corresponding to the positionsintoqwhich the operating member is moved by the operator.

In accordancewith: a

feature ofthe invention, the operating member" is the form of apair of handles mountedat opposite ends of the roll but movable relatively Provision is made for locking the support thereto, the handles being arranged tobe moved by the operator into positions corresponding to the positions towhich it is desired to: move the roll; The handles control the" flow of pressure fluid to a fluid-pressure motor by which movements of the roll lengthwise of the shoe are efiected, there being provision for cuttingoff the flow of pressure fluid to the: motor upon movement of the roll to a position corresponding to that of the handles.

In accordance with a further teatur of the invention, the handles are also mountedfor tippingmovements about an axis extending trans versely of the axis of the leveling roll and: the

the invention, is a motor by which spindle"on" handles control, by their tipping movements; the

flow of pressure fluid to a fluid-press-ure-oper ated roll-tipping motor, there being provision-for cutting off the flow of pressure fiuidtothis motor upon movement of the roll into a position correpower, thereby minimizing fatigue onthe part of the operator in carrying. out the leveling operatiom In accordance with a. still further feature of theihventi'ong the leveling. roll is i oroed by 'a fluid pressure motor into engagement with the" shoe bottorng the: introduction of pressure fluid into the motor being controlled by one of the aforementioned operating handles. By a slight heightwise movement at the handim the roll may be-li fiteet the shoe: bottom or forced into engagement therewith Thus; the operator has:

complete-confl ct at all times over "all: movements 0% the levling'irollz whetherobziect oi the invention is to provide:- an"; ianptoved leveiinglmaehine in when the .levei mg operation may be commencedeither at the toe-"ended the: shoe or at the heel end ac cordance with the desires-of the operator. 'l his is-acconrplishedg in accordance with afurther faainnie the: invention, by providing a sup" port fior'tne shoewhich may? be" turned into the-1" 01 two positions which the toe ehdl of the shoe orthe heel: end thereot is? directed reaq wardly.

either oi its: twcr positions; With the toe end dii ected rearw-amdly; the" leveling: operation willstart at the toe end, whereas it \vtl1 stant at" I the heel end when the heel end== oi the shoeis I directed rearwardly. Associated with the" shoe support, in -accordance with another featurdof the heel 'supporting" member of the" shoesupport is rocked: tof orcethe toeend oi the sho'e against a toe post to support theslioe" firmly for the actiomofitheleveling rolh 'T he above and other features of the inven' 'tioh, including various novel det'aiisof constant-1 tion and combinations of parts,- will now be do sesibed by reference to the drawings and pointed teem-enema m tli'e di 'awihg'sy mg 1 aside elevation; partly in sect ofthe fii -i er portion of one form of a machine I Fig; Zi-s'a vrewsiinnarto-Fi 1, of the lower pdrti-bnof the-machine:

Fig. 3' a" detail v'ifcw'in' side devotion of a f ortion: or the mechanism for" operating" thei'pres sure-resenting valve an d the main: control valve oftl'iefiiiid pressure system of the machines 4 is a-front elevatibm partly in section,-

of thenpper'portion otthemachine;

Fig. can ahplan view of a portion of the "mechan'i'sm for moving. the roll vertically into and'out oi cbntactwith the work; g I

Fig. 7 is a detail view, partly in section, of a portion of the mechanism for tipping the leveling roll;

Fig. 8 is a plan view of the handles for controlling movements of the leveling roll;

Fig. 9 is a section on the line IXIX of Fi 1, and

Fig. 10 is a plan view partly in section of the means for adjustin the heel and toe posts of the jack. I

The main frame I!) of the machine carries a shoe support or jack l2 for supporting a shoe S for the action of a leveling roll 14. The roll i4 is mounted, as will be described, for movements lengthwise of the shoe on the support for tipping movements laterally of the shoe bottom and for; heightwise movements relatively to the shoe so that pressure may be applied by the roll to the upper end of a lever 59 pivoted at 52 to the support 38 and urged by a spring 54 in a direction to move the locking pin 44 rearwardly into locking engagement with one of the holes 46. By exerting a rearward force on the lower end of the lever 56 the pin 44 is retracted whereupon the turntable may be rotated. As shown in Fig. 4, an angular groove '55 is formed in the turntable and connects the h'ole'sdfi but extends only half way around the turntable. The pin M rides in the groove 56 when retracted from the holes and prevents movement of the turntable except beshoe bottom or the pressure relieved at will. The jack [2 is held stationary during the leveling opp 'eration but is so mounted that the shoe may be supported with either its toe end or its heel end directed rearwardly toward the leveling roll, as will be described. Thispermits the operator to start the leveling operation from either the toe end of the shoe or the heel end as he desires.

The jack I2 includes a toe post l6 which carries at its upper end a toe support l8 and a support for the cone of the last. The jack also includes a heel post 22 to which is pivoted at 24 for swinging movements in directions lengthwise of the shoe a block 26 which carries a spindle 28 adapted to enter the thimble hole in the heel end of the last. The spindle 28 passes through an enlarged opening in a plate 39 also carried by the block 26, the plate being free to tip about an axis extending laterally of the shoe to adjust itself to the top face of the cone of the last. This plate and the toe support are constructed substantially as disclosed in Letters Patent of the United States 1,962,141, granted June 12,1934, on an application of A. Eppler, and accordingly are notdescribed herein in detail. The block 26 is arranged to be swung in a clockwise direction, as viewed in Fig. 1, after a shoe has been mounted in the jack thereby to press the toe end of the shoe firmly down upon the toe support [8, by mechanism to be described.

The toe and heel supports aremounted for movements toward and away from each other thereby to adjust the jack for shoes of difierent sizes. The lower ends of the toe and heel supports have laterally extending flanges 3|, as shown in Fig. 4, and are carried for sliding movements lengthwise of the machine in a way formed in the top plate 32 of a turntable 36. secured to the top of the plate 32 engage the upper surfaces of the flanges at the bottoms of the toe and heel posts to prevent vertical displacement of the posts from the slideway. The turntable 36 is rotatable on a circular support 38- secured to the top of the frame Ill and extending upwardly therefrom. The upper portion of the support 38 has an internal flange 40 which acts as a circular bearing for the turntable 36 in a circular guideway formed by the plate 32 and a plate 42 secured to the lower portion of the turntable, the construction being such as to maintain the turntable in place upon the support. The

turntable is arranged to be maintained in either of two positions spaced 180 apart by a pin 44 passing through a hole in the upper portion of the support 38 and arranged to enter either of two holes 46 (Fig. 1) in the turntable. The pin 14 is provided at its forward end with spaced flanges 48 between which is received the forked Gibs 34 tween predetermined limits defined by the holes. Consequently, the operator cannot rotate the turntable more than 180 in one direction. This 'is of importanceas otherwise the pressure fluid connections to be hereinafter described might become fouled.

For adjusting the toe and heel posts toward and away from each other to accommodate shoes of difierent sizes, screws 58, 60 (Figs. 1 and 10) are threaded through the toe and heel posts respectively, and are provided at their outer ends with handles 62, 64. Secured to the inner ends of the screws are bevel gears 55 which engage a bevel gear 58 journaled on a stud 10 carried by a post 12 secured to and extending upwardly from the turntable 36. It will be noted that the threads on the screws 58, 89 extend in the same direc-' tions but by virtue of the bevel gearing, above described, connecting the two screws, they will turn operator, rotation of this handle in a counterclockwise direction will produce the same result. This arrangement tends to avoid confusion to the operator when adjusting the relative positions of the toe and heel posts in determining which direction to turn the handle which is accessible to him.

After the shoe is placed on the jack the block 2s is moved in' aclockwise direction as viewed in Fig. l in order to force the toe end of the shoe firmly against the toe support l8. For this purpose a fluid pressure motor comprising a cylinder 74 is pivoted at 76 to an extension of the lower end of the heel post 22. A piston l3 movable in the cylinder 16 is connected by a piston rod 80 to the lower end of a bell crank lever 82 pivoted at as to the heel post 22. This lever has an arm 85 which extends rearwardly, when the jack is positioned as shown in Fig. 1, for engagement with a pin 88 in the lower end of a link SiLthe upper end of which link is pivoted zit-92 to the block 29. The pin 88 is connected "by a link 9t to the lower end of an arm 96 of a second bell crank lever pivoted at 98 to the heel post. This latter bell crank lever has an arm iii!) carrying a pawl H2 (Fig. 4) engageable with a ratchet I84 on the heel post,v the arrangement being such that the bell crank lever 96, Hi0 may be held in any one of a plurality of positions of adjustment, permitting adjustment of the fulcrum about which the link 94 pivots when the bell crank lever 82 is rocked about the pin 84 to move the block 23 in a clockwise direction. By this adjustment the leverage through which the pressure fluid acts is controlled thereby reg- .e-eaopa's ulating the force with which the shoe is urged against the toe support when pressure fluid is admitted through a pipe I86 into the right end of the cylinder 74. The mechanism for supplying and controlling the admission of pressure fluid into the cylinder 14 will be explained hereinafter.

The leveling roll I4 is journaledin the forward end of a support I88 which is in turn pivotally connected by a pin H8 to a forwardly and rear- Wardly extending shaft I I2, journaled in a crosshead H4. This crosshead is carried by trans versely-extending shafts H6, H8, the shaft H6 being jou'rnaled in theupper ends of a pair of spaced ,arins I28 which are interconnected by Webs I22, I24 (Figs. 1 and 2) to form a rigid structure. lihe arms I28 are secured to a shaft I26 journaled in brackets I 28 extending upwardly from a plate I88 forming the top of a fluidreservoir I32 carried by the lower portion of the frame I8. The shaft II8 is similarly carried by a pair of spaced arms IBQinter-connected by a web I36 and carried by a shaft I38 journaled in the brackets I28. It will be understood that as the pairs of arms I28, l8t are moved about the axes of the shafts I26, I38 the leveling roll will bemoved lengthwise of a shoe on the jack I2. For thus moving the arms I28, I84 and the leveling roll, the arms I28 are connected by a link I48 (Fig. 2) to a piston I42 movable in a cylinder I44 pivoted at I46 within the frame of the machine. Upon admission of fluid under pressure through a pipe I48 into the cylinder I44 the pis- 'ton I42 will move forwardly causing similar motion to be imparted to the leveling roll, and the roll will be moved rearwardly upon admission of pressure fluid through a pipe I58 into the for- Ward end of the cylinder. u

Provision is made for moving the leveling roll heightwise of the shoe on the support by rocking the roll support I88 about the pin H8. EX- tending upwardly from the support I88 is a pair of parallel curved arms I52 (Figs. 1 and 4) having slots I58 adjustably to receive a pin I56 carried by the forward end of a piston rod I58. This rod is connected to a piston I68, movable in a cylinder I52 pivoted at I54 to a supporting bracket I88 keyed to and extending upwardly from the rearward end of the shaft H2. Upon admission of pressure fluid through a pipe I68 into the rearward end-of the cylinder I62, the piston I 88 is moved forwardly thereby moving the roll support I88 downwardly about the pivot I'III causing movement of the roll toward the shoe bottom. To lift the roll out of engagement with the shoe bottom, fluid under pressure is admitted through a pipe I'I8 into the forward end of the cylinder I52 moving the piston I68 rearwar'dly. To vary the pressure exerted by the leveling roll on the shoe for a given movement of the piston I68 the position of the pin I56 can be adjusted heightwise of the arms I52;

Tipping movements are imparted to the roll by a fluid pressure motor I.'l2 (Figs. 1 and 9) carried by a plate II I extending downwardly from the crosshead H4. cylinder I18 pivotally secured at I18 to the plate I14 and a piston I88 movable vertically in the cylinder. An upwardly extending piston rod I82 is pivotally connected to an arm I84 extending laterally from the bracket I68 which is keyed to the shaft 2. It will be understood that up n the piston I88 is forced upwardly moving the This motor includes a' arrifiIBt-iiii: a counterclockwise direction as viewed inz'Fig- 9.-t*o :tip' the iron in the same direction. Reverse tipping of the leveling zro'll takes :plaee upon the .-introductio'n or fluid under pressure ii-ito the upper .end of the cylinder -I- 'I t through a pipe I88.

For supplying pressurelfluid to the vafidtlSHn0= tors heretofore described a pump I98 (Fig. 12) is mounted within the -fluid reservoir I232. This pump is-driven-by 'a-motor I 92 carried by the top I38 of the reservoirand connected by iabelt I84 to -a;-pulley.-I96 onthe' shaft of the pump. u'lhe high pressure side of the 'pump is connectediby a pipe v"I98 tea .pressure regulating "valve 288 which may be similar to the .pressure-sre'gulating' valve-246 illustrated and described in Letters :Pat entof the UnitedSta-tes 2,238,244 granted February 4, :1941 on an application filed in. the names of Fred V. :Hart and John iAustin. This-valve includes a: rod 282 which, when in its upper aposition; as illustrated :in Fig. 2, permits :fluid to flow from the pipe I88 directly back' to the reservoir I32 by way of a pipe 284. However, when the rod 282 is moved downwardly bythe straight= ening of a toggle 286 (Fig. 3) pressure fluidfthen of approximately 30 the 'pipe 2-I4-com'fnun'lcates Withthe .pipe288 from the valve .288 by way l'jfi passageway-e218; 2218:within'thevalve. 'Thewalve memberZ I2 .:is also provided with a:port12.-2I;tl'ie sole purpose of which is to balance the pressures exerted on the interior of the valve-housing 2'I8 to-avoid sticking orthe valve which might other wise i'oc'cur.

The toggle 286 (Fig. 3) includes Mink-222 connected tothe :upper end of the rod 1282 and sin arm 224 connected to the valve element .2I 2- When the toggle is straightened the am .224

turnedzin a clockwise direction moving the valve intoposition toconhect the high pressure outlet pipe 2880f, the -va1ve: 2188 with the pipe 214. occurs simultaneously with the operation ref the pressure-regulating valve 2.88"t'o supply fluid der pressure to the pipe'288 and to prevent nee discharge of the fluid through the pipe 284 Back to the reservoir. e s

EMT-carried by the bracket I28 is effective to press thertoggli Extending forwardly from the k eeof-ithe toggle 288 is a rod 234 the forward end or which carries a latch member 236. Pivot'd to this. latch-members an arm z'ea of a hell I 1e'vsr which .ls piv'o'ted at 'm to abracket's'ure to" the top I138 of the reservoir; This bell crank lever has a forwardly extending arin 242 when the parts; are in the positions shown inFig 2, is in the path of movement of a shoulder i248 formed at the upper endo fanarm 2'44 whic pivoted streets the; tieadle. 22's. The. arm.

is urgedpy a. spring 24.8]intoposition toengage the. arm so that upon downward. movementof-the treadle the bell crank l ver zit, m is moved in a counterclockwise direction causing therod 234 to move forwardly straightening the toggle 266. Pivoted to the frame of the machine below the latch member 236. is a latch bar 256 which is urged upwardly toward the latch member236 by a spring 252 connecting thetwo. The latch bar 256 moves into locking engagement with thelatch member 236 when the rod 234 is moved forwardly thereby locking the toggle in itsstraightened position. Upon release of'the pressure on the. treadle 226 itis returned into the position shown in Fig. 2 by a spring 254, this position being determined by an adjustable stop screw.256 which is engaged by the treadle. During this upward movement of the treadle the upper end of the arm. 244 engages the forward end of the latch member 2'36;which is now in its forward position thereby causing the arm 244 to move in a counterclockwise direction against the action of a spring 248. Pivoted to the upper end of the arm 244 is a latch 256 urged for movement in a clockwise direction relatively to the arm 244 by a spring 258 the extent of such movement being limited by a pin 260 carried by the upper end of the arm. With the treadle in its upper position after the toggle has been straightened itwill be understood that the arm 244 is held in a. position forwardly of the machine from that shown in Fig. 2. When in this position the latch member 256 is located above a pin 262 carried by the forward end of the latch bar 250 and extending laterally therefrom so that upon the next depression of the treadle 226 the latch bar 256 is moved downwardly out of engagement with the latch member 236 permitting the rod 234 to be moved rearwardly by the spring 230 and returnmg; the valves :to the positions shown in Fig. 2. At this time 'the arm 244 isout of the path of movement of the arm 242 of the bell crank lever when the lever returns into the position shown. When the treadle is again released after the parts have been returned to their initial positions,,the lower end of the latch 256 moves out of engagement with the pin 262 whereupon the spring 248 returns the arm 244 into the position shown, in readiness for the next operation.

Movements of the roll I4 during the'leveling operation are controlled by a pair of handles 266, 268 (Figs. 4, 5 and.8) which are carried by a supporting frame 210 and are preferably located substantially in alinement with the axis of the leveling 'roll at opposite ends thereof. The handle 266 is rigidly carried by the supporting frame 216 and the handle 288 is carried for pivotal movement thereon about the axis of a stud 212 (Fig. 4) for a. purpose to be described. The supportingframe 218 is pivoted on a block 214 (Fig. 5) for movements about a horizontal axis extending substantially parallel to. the roll I4, the block in turn being secured to a splined shaft ZTS-journaled in a boss 218 carried by the roll support I08 and extending upwardly therefrom. The splined shaft 216 is slidable in a. sleeve 280 formed with keys fitting the grooved portions of the shaft 216 so that the sleeve and shaft will turn in unison. The sleeve 280 is connected by a horizontal pivot pin 282 to a coupling member 284 which is in turn secured to a shaft 286 passing' through a bearing sleeve 288 having a depending portion keyed to the roll-supporting shaft H2. It will be understood that upon heightwise movement of the leveling roll the splined shaft 216 will partake of a corresponding movement causing the heightwise position of the 8 handles 266; 2558 always to correspond to that of the roll but at all times the shaft 216 to which the handles are connected, as heretofore described, is connected to the shaft 286 for a purpose which will appear as the description proceeds.

For controlling the admission of pressure fluid into the cylinder I44 (Figs. 1 and 2) thereby to control themovements of the leveling roll lengthwise of the shoe bottom, a valve 296 (Figs. 1 and 5) is provided and is carried by a plate 2! extending laterally from the roll support I08. This valve has a central port connected by pipes 292, 294 with the pipe 2M leading from the valve 2h! and through which fluid under pressure passes when the toggle 265 (Fig. 3) is straightened. This valve may be constructed like I the valve 234 of Patent No. 2,230,244, the arrangement being such that when the valve element is moved to the left, as viewed in Fig. 1, or forwardly of the machine, pressure fluid flows from the valve through the pipe 148 and when the valve is moved to the right or reawardly of the machine the'fluid leaves the valve through the pipe I56. However, when the valve is in a midposition the new of pressure fluid through either of these pipes is prevented. Connected to the valve element is a forwardly extending rod 360 pivoted at 382 to the supporting frame 218. This rod carries collars 384, 326 forming abutments for compression springs 328 the adjacent ends of which engage collars 369 at opposite sides of a flange 3 I 6 extending downwardly from the plate 29 I between which collars is a collar fixed to the rod. It will be understood that when the handles 266, 268 are moved forwardly by'the operator the rod 3ilil wil1 be similarly'moved operating the valve 292 to cause pressure fluid to flow from the pipe I48 into the rear end of the cylinder I44 where upon the leveling roll also moves forwardly. After the roll has moved forward a distance corresponding to the extent of movement of the handles the parts associated with the leveling roll will assume their relative positions shown in Fig. 1 so that the flow of fluid through the pipe I48 ceases. Upon rearward movement of the handles relatively to the roll pressure fluid flows through the pipe I56 into the forward end of the cylinder I44 causing the leveling roll likewise to move rearwardly. Thus it will be understood that forward and rearward movements of the leveling roll are caused by moving the handles 266, 268 forwardly and rearwardly, the extent and directions of movement of the roll corresponding to the eX- tent and directions of movement of the handles. The leveling roll, however, is moved by fluid pressure so that the forward and rearward movements of the roll which are controlled by similar movements of the handles are effected with a minimum of effort on the part of the operator.

For controlling the flow of pressure fluid into the cylinder 62 (Fig. 1) for moving the leveling roll into and out of engagement with the shoe bottom a valve 3.12 is provided, this valve being similar in construction to the valve 290 and mounted on the top of the cylinder I 62. The central portion of this valve is connected to the pipe 294 by a pipe 3I4 and the opposite ends of the valve are connected by the pipes I68, I10 to the opposite ends of the cylinder I62. The element of this valve is normally held in a forward position so that when the toggle 286 is straightened fluid pressure flows into the forward end of the cylinder I62 holding the roll in raised position. During the leveling operationthe valve element ZAQQL QS.

is movedrearwardiy so that pressurefluid: flows through the pipe its to move therl'eveling; roll into engagement with the work. The val-vein-i cludes a valve stem Elli (Fig; 6).connected.by a harililwith the armature EZtlof solenoid322- carried by the cylinder 52 adiacent to the; Valve. 3-12. A spring acts on the bar Iildnornlally to hold the valve stem l-fi in its forward-position Upon energization of the solenoid, however, the armature 3-20 is drawn inwardly operating through the bar M8 to move theva-lve stem. 31 5. rearwardly so that pressure fluid flowshehind the piston sec and the leveling roll is forced a ainst the shoe bottom. For energizing; the solenoid switch 325 (Fig. 4) is mounted on the support.- ing frameZlfl and is-arrang d to be actuated by arm 3728 connectedto the handle 58 when the handle is moved about the pivot 21-2 inacounteroloelswise direction, thereby to close the circuit to the solenoid. An adjustable stop screw 33B limits the extent movement ,of thelhandle. 2% in switch-closing direction and the handle is normally held in the position shown-relatively to the frame 273 by a torsion spring 332.. 'l hus it will be seen that in order to force the leveling roll against the shoe loottom after it has been moved over the shoe bottom as heretofore; described, it is necessary for the-operator merely to apply slight downward pressure to the handle 258 closing the switch 325; and energizingthe solenoid 322. At any time during the. leveling operation that the operatordesires to lift: the leveling roll he need only relievethe downward pressure on the handle 263 whereupon-the switch 326 is opened and the solenoid is deenergized.

For controlling the tipping movements of -the leveling roll which are effected lovmovements. of the piston Hill (Fig. 9-) a valve-33.4fmprovided which may be similar to the valve. 290. The central portion of this valve is connected by apipe 335 to the pipe 29!!- (Figs. -1 and 2). which. isfin turn connected to the outlet of the valve; ll A The opposite ends of the valve 336 are connected bythe pipes I at, l8 s to theopposite. ends of. t pv inder I76. The valve includes. an upwardly pro.- jecting valve-operating. rod .338 pivotedto oneend. of a lever 348 the other end of which is donrleotedv by a pin 3M to a link 3.42. This link connects the lever 34!! to a lever 344which is in turnpivoted at 3.46 to a bracket projecting rearwardly from the plate I'l (Figs. land 7). The le'verilllili this 9) as pivo d t t a 3.9 a n 3. t -utt r end of which is pivoted to an arm 35llfsecu11edto the shaft 286 which is in turn connectedkto the handle-supporting frame 210 as heretbiorejde scribed. The lever 5. .4 is 'connectedhy, alink 3.52 to an oom 354 integral with the arml lfi d Joy.

which movements of the piston LLBilQca movements of the leveling roll.

Whe e d ins h e n o era erator desires to tip the leveling rollhef'fex'erts.

pressure on one of the handles 261B, 2 5,8 to rock the frame 2''! 11in the direction of the desired rolltipping' movement. This movement of the handle-supporting frame 214?. is communicated shaft I I2 in a counterclockwise@direction, so that, the leveling roll follows the movement of the handles in its tipping movement.- The tipping movement of the roll will continue until it ha moved into a. position corresponding to the posi tionsof the handles at whichtime the roll-tipping movement ceases. During the tipping movement, of the rollthe lever 344 moves downwardlyassum-. ing that the shaft- 286-has been turned in a oou ne tel-clockwise direction b movement of the. frame 210. whereupon the. lever. 34 0 moves-about" the pivot-335th OVe the valve hack toward its i i W n h 1 .1 has mow -an amount corresponding to the extent of movement of the handles the valve again returns to its midpgsitionl so that the roll-tippingmovementstops. It will understoodthat if the. shaft 286 isrookedin; a clockwise direction the roll will be tipped-in a. corresponding. direction, the piston. Mi let-this.

time moving downwardly.

. In the-operationofthe machine, theoperato places a shoe onthe jack, after the Jack. been properly adjusted .in. accordance with the size of the shoe to be leveled whereupon the .treadleQZZG.

is depressedto straighten the toggle 20.6 and pros; surefluidfiows into the right end of the cylinder 14 (Fig. 1). to tip the block 2.6. in-a clockwise-dime tion forcing the toe end of the shoev firmly down against. the toe support 18., The. operator-them grasps the handles 256 25 8. moving-them toward. him which causes operation of. thevalve ,290 to supply pressure fluid to the cylinder I44} thereby tov moveythe. roll overthe shoe loottom. Byeir}: ertihgslilght. downwand pressure on the handle 268 'the solenoid 322 .e is energized operating. valve 3l 2 (Fig. 6), and pressure fluid fiows into the rear end of the cylinder 16.2. (Fig. 1)- fQrJc in g the rollagainst the shoe bottom. The roll is now moved lengthwise-of theshoeby movingjth e han olleszfili, 25.8 toward-and away'from the operator in vthe manner of operating a rolling pin. l3y. eg entingpressure oripneor the other of. the handles ndiip ns th h lc n h i emev 12"!) the r valve 3.3.4 is .op rat d'to su l pressure-flu no one end or the other, of the cylinder lltiliig. 9)

causing the roll to tip accordingly. l

After the leveling operation ha-s been completed the leveling roll'is returned to the position shownw V in Fig.1: and the'treadle 22,6.is again depre sseld, re leasing t latch zstgwhereunon tn ..t ogg le..z.os; is broken by the spring 230 and'the valveele 2]; isreturned to the position shownin F 2 At the same time the pressureaegulating lve pump ii!!! to returndirectly to the reservoir.

From the foregoing it willbe seenlthatthefh'anjment with the axis of the handles. Hav us d sc i ed the nvent on wh claim as new desir t secure by Letters Bate. ent'of t Un tedsi is w i j In a level n ma hine sho sum-9 2i v lin 01 m unt or m e-mea i e m l of a h s qn th vpn r to. pau th 91 1 or. crate, progressively along the shoe bottom,.. .pow.eI:-.-

QR. en ows t nnes m vi sa d ral ie amass member movable by the operator for controlling said power-operated means to cause it to move said roll into positions corresponding to the positions into which said member is moved by the operator. I w 1 i 2."In a leveling machine, a shoe support, a leveling roll mounted for movements lengthwise of a'shoe on the support to' cause the roll to operate progressively along the shoe bottom, poweroperated means for thus moving said roll, and a membermounted adjacentto said roll for movements by the operator lengthwise of a shoe on the support for controlling said power-operated means to cause the roll to follow the movements of said member. f

3; In a leveling machine, a shoe support, a leveling roll mounted for movements lengthwise of a shoe on thesupport to cause the roll to operateprogressively along the shoe, bottom and also for tipping movements laterally of the shoe bottom, power-operated meansjfor moving said roll lengthwise of the shoe, power-operated means for imparting tipping movements to said roll, and a control member movable along one path for controlling the first of said power-operated means and movable along another path for controlling the second of said power-operated means.

4. In a leveling machine, a shoe support, a leveling roll mounted for movements lengthwise ofashoe on the support to Cause the roll to operate progressively along the. shoe bottom and also i'or tipping movementslaterally of the shoe bottom, power-operated means for moving said roll lengthwise of the shoe, power-operated meansfor imparting tipping movements to said roll, and a control member movable lengthwise of the shoe on the support for controlling the first of said power-operated. means to cause the roll to move into positions lengthwise of the shoe on the support corresponding to the positions into if which said member is moved by the operator, and movable laterally of the shoe on the support to control the second of said power-operated-means to cause the roll to tip into positions correspond erate progressively along the shoe bottom andalso for tipping movements laterally of the shoe bottom, power-operated meansfor moving .said roll lengthwise of the shoe, power-operated means for imparting tipping movements to said roll, a

control member movablellengthwise of the shoe on the support for controlling the first of said power-operated means to cause the roll to move into positions lengthwise of the shoe on the support corresponding'to the positions into which said member is moved by the operator; and movable laterally of the shoe on'the support to control the second of said power-operated means to cause the roll to tip. into positions corresponding tothe positions into which said member is moved laterally of the support, and means operated by said member for moving the roll heightwise of the shoe bottom. V

6.-In a leveling machine, a shoe support, a

leveling roll mounted for movements lengthwise of a shoe on the support to cause the roll to operate progressively along a shoe bottom, a pair of operating handles near the opposite ends of said roll, means mounting said handles for unitary movements by the operator in directions lengthwise of the shoe on the support, and poweroperated means controlled by said handles for causing said roll to follow the movements of the handles.

7. In a leveling machine, a shoe support, a leveling roll mounted for movements lengthwise of a shoe on the support to cause the roll to operate progressively along a shoe bottom, a pair ofoperating handles near the opposite ends of said roll, means mounting said handles for uni tary movements by the operator in directions lengthwise of the shoe on the support, poweroperated means controlled by said handles for causing said roll to follow the movements of the handles, and means controlled by one of said handles for causing the roll to be moved vertically toward and away from the shoe bottom.

8. In a leveling machine, a shoe support, a leveling roll mounted for movements lengthwise of a shoe on the support to cause the roll to operate progressively along the shoe bottorm'a pair of operating handles near the opposite ends of the rolls, means mounting said handles for unitary movement by the operator in directions lengthwise of the shoe on the support and also for unitary rocking movements laterally of the shoe on the support, power-operated means for moving the roll lengthwise of the shoe on the support, power-operated means for tipping the roll laterally of the shoe on the support, and means for operating both of said power-operated means in response to movements of the handles by the operator whereby the roll is moved into positions corresponding to the positions of the handles relatively to the shoe on the support,

9. In a leveling machine, a shoe support, a leveling roll mounted for movements lengthwise ofashoe on the support to cause the roll to operate progressively along the shoe bottom, a, pair of operating handles near the opposite ends of the rolls, means mounting said handles for unitary movement by the operator in directions lengthwise of the shoe on the support and also for unitary rocking movements laterally of the shoe on the support, power-operated means for moving the roll lengthwise of the shoe on the support, power-operated means for tipping the roll laterally of the shoe on the support, means for operating both said power-operated means in responseto movements of the handles by the operator whereby the roll is moved into positions corresponding to the positions of the handles relatively to the shoe on the support, and means controlled by one of said handles for causing the roll to be moved vertically toward and away from the shoe bottom.

10. In a leveling machine, a shoe support, a leveling roll, means mounting said leveling roll for movements lengthwise of a shoe on the support to cause the, roll to operate progressively along the shoe bottom, fluid pressure means for thus moving said roll, and means associated with said roll for controlling said fluid pressure means.

11. In a leveling machine, a shoe support, a leveling roll, means mounting said leveling roll for movements lengthwise of a shoe on the support to cause the roll to operate progressively along the shoe bottom, fluid pressure means for thus moving said roll, an operating member at one end of said roll mounted for movements by the operator in directions lengthwise of a shoe on the support, and mechanism operated by said member for controlling said fluid pressure means to cause the roll to follow the movements of said member. a 1

12. In a leveling machine, a shoe support, a

amasse- I 3 leveling roll, means mounting said leveling roll for movements lengthwise of'a shoe on the support to cause the rollto operate progressively eause the rolltoiollow the movements ofsaid member, and fluid pressuremeans controlled by said member for moving said rol'l' heightwise or the shoe on the support into and out of engagement with the shoe bottom. I

13. In a leveling machine, a shoe support, a

leveling roll, means mounting said leveling roll" for movements lengthwise of a shoe on the support to cause the roll to operate progressively along the shoe bottom, fluidpressure means for thus moving said roll, an opera-ting member at one end of said; roll mounted forrnoyements by the operator in directionslengthwise-oi a shoe on the'support, mechanism operated by said member for controlling said fluid pressure means to cause the roll to follow themovements of said member, fiuid pressure means controlled by said member for moving said" roll heightwise oi the shoe on the support into and out of engagementwith the shoe bottom, and other fluid pressure means controlled by said member for imparting t ipmng movements to the roll laterally of the shoebottom.

14. In a levelin machine, a shoe support; a leveling roll, a support for said leveling roll; power-operated means for moving" said ro ll support to move the leveling roll in directions 'lengthe wise of a shoe on the shoe support to cause the roll to operate progressively along the shoe bottom, and power-operated means associated with; said roll support for tipping. the leveling rolllaterally thereof.

1-5. In a leveling machine, a shoe supportpa. leveling roll, .a support for said leveling roll,

power-operated means for moving said roll support to move the leveling-rollin directions lengthwise of a shoe on the shoe support to cause the roll to operate progressively alon the shoe bottom, power-operated means associated with said roll support for tipping the leveling roll laterally thereof, and operating handles associated with said roll for controlling each of said power-operated means.

16. In a leveling machine, a shoe support, a leveling roll, a support for said leveling roll, power-operated means for moving said roll support to move the leveling roll in directions lengthwise of a shoe on the shoe support to cause the roll to operate progressively along the shoe bottom, and power-operated means associated with said roll support for moving the leveling roll heightwise into and out of engagement with the bottom of a shoe on the support.

17. In a leveling machine, a shoe support, a leveling roll, a support for said leveling roll, power-operated means for moving said roll support tomove the leveling roll in directions lengthwise of a shoe on the shoe support to cause the roll to operate progressively along the shoe bottom, power-operated means associated with said roll support for moving the leveling roll heightwise into and out of engagement with the bottom of a shoe on the support, and operating handles associated with said roll for controlling each of saidv power-operated means.

18. In a levelin machine, a shoe support, a

leveling roll, a'support for said levlelingiollg? power-operated means for moving said roll sup port to-move the leveling roll in directions length-z. wise of' a. shoe on the shoe support to cause the roll to operate progressively-along the shoe bottom, power-operated means associated with said roll support fol-tipping the, leveling roll laterally:

thereof, power operated means associated'with said roll' support for moving the leveling roll heiglitwise intoand out of engagementwith the b'ottomof a shoe on; the support, and an operating handle associated with said roll for controlling eachiot saidpower-operated means.

19; In a levelin machine, shoe support, a

leveling roll, a support for said'leveling roll mov--- able to carry the roll in directions length-wise oi a shoe on the shoe support, means mounting said roll on said roll support for tipping movement's' relatively thereto in directions laterally of'a shoe on the slice support for movements height- Wise of the shoe support toward and from the'shoe'bo-ttom, power-operated means for mov' ing-said roll support, and pow gpcrated means movable with said rollsupport for tipping the roll; r t

20. In a leveling machine, a shoe support, a

leveling roll, a support for said leveling roll movable tmcarrythe roll in directions lengthwise of a shoeon the shoe support, means mounting said roll on said roll support'for tipping movements relatively thereto in directions laterally of a shoe o-n'qthe shoe-support and for movements heightwise-of: the-shoe support toward and away'from" the shoe bottom, power-operated means for moving said roll support, power opera-ted means-mov-' able with said roll support for tipping the'roll, a

pair" of operating handles movabiy carried by said support'at opposite ends of said roll, and

means operated in responseto movement of said handles-in the desired direction of rolrmo'vem'ent" for controlling said pressure-operated means to cause movement of the roll in the direction" of movement ofthe handles.

' In a-leveling machine,v ,a shoe support; a

leveling roll; a'support for'said leveling u -av;

able 'to carry the roll in directions lengthwise 0f a shoe on the shoe support, means mounting said roll on said roll support for tipping movements relatively thereto in directions laterally of a shoe on the shoe support and for movements heightwise of the shoe support toward and away from the shoe bottom, power-operated means for moving said roll support, power-operated means movable with said roll support for tipping-the roll, a pair of operating handles movably carried by said support at opposite ends of said roll, means operated in response to movement of said handles in the desired direction of roll movement for controlling said pressure-operated means to cause movement of the roll in the direction of movement of the handles, said last named means being constructed and arranged to limit the extent of operation of said power-operated means and the movement of said roll inaccordance with the extent of movement of the operatin handles.

, 22. In a leveling machine, a shoe support, a leveling roll, means for effecting relative movement of said shoe support and said leveling roll in directions lengthwise of a shoe on the support to cause the roll to operate progressively along the shoe bottom, and means mounting said shoe support for turning movement whereby a shoe carried thereby has either its toe end or its heel end directed rearwardly.

23. In a leveling machine,- a shoe support, a

15 leveling roll, means for effecting relative movement of said shoe support and, said leveling roll in directions lengthwise of a shoe on the support to cause the roll to operate progressively along the shoe bottom, means mounting said shoe support for turning movement, and means for locking said support in either of two positions in which either the toe end of a shoe carried thereby or the heel end of the shoe is directed rearwardly.

24. In a leveling machine, a shoe support, a leveling roll, means mounting said leveling roll for movement, from an initial position in which it is located rearwardly of a shoe on the support, in directions lengthwise of the shoe to cause the roll to operate progressively along the shoe bottom, and means mounting said shoe support for turning movement into either of two positions in which either the toe end of the shoe or its heel end is directed rearwardly.

25. In a leveling machine, a shoe support, a leveling roll, means for effecting relative movements of said shoe support and said leveling roll in directions lengthwise of a shoe n the support to cause the roll to operate progressively along the shoe bottom, said shoe support comprising a toe support and a heel support, said heel support including a spindle arranged to enter the hole in the heel end of a last, means mounting said spindle for rocking movement about an axis extending' transversely of a shoe on the shoe support, and power-operated means for moving said spindle about said axis in a direction to force the toe end of the shoe firmly against the toe support.

26. In a leveling machine, a shoe support, a leveling roll, means for eiiecting relative movement between said shoe support andlsaid leveling roll in directions lengthwise of a shoe on the support to cause the roll to operate progressively along the shoe bottom, said shoe support including a spindle arranged to enter the hole in the heel end of a last, means mounting said spindle for rocking movement about an axis extending transversely of a shoe on the shoe support, means mounting said shoe support for turning movement into either of two positions in which either the toe end of the shoe or its heel end is directedrear- 16 wardly, and power-operated means carried by said support for moving said spindle about said axis in a direction to force the toe end of the shoe firmly against the toe support.

2'7. In a levelin machine, a shoe support, a levelingroll, means for effecting relative movement of said shoe support and said leveling roll in directions lengthwise of a shoe on the support to cause the roll to operate progressively along the shoe bottom, said shoe support comprising a toe support and a heel support, means for adjusting said toe support and said heel support toward and away from each other to accommodate shoes of different sizes, means carried by said heel support for forcing the toe end of the shoe firmly against the toe support, and poweroperated means movable with the toe support for actuating said last-named means.

28. In a leveling machine, a shoe support, a leveling roll, fluid pressure means for effecting relative movement of said shoe support and said leveling roll in directions lengthwise of a shoe on the support to cause the roll to operate progressively along the shoe bottom, fluid pressure means associated with said shoe support for holding the shoe firmly on the shoe support, a pump for supplying pressure fluid to said fluid pressure means, a pressure-regulating valve controlling the output of said pump, a valve for controlling the flow of pressure :fluid from said pressure-regulating valve to said first-named fluid pressure means, a valve for controlling the flow of pressure fluid from said pressure-regulating valve to said second-named fluid pressure means, an actuating member for operating said second-named valve to directpressure fluid to said second-named fluid pressure means and for simultaneously actuating said pressure-regulating valve to supply fluid at a high operating pressure to said first flow control valve, and a manually-operated member for controlling said first valve to control the relative movements of said shoe support and said leveling roll.

FRED V. HART.

No references cited.

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