US1935625A

US1935625A - Leveling machine

Info

Publication number: US1935625A
Application number: US636873A
Authority: US
Inventors: Eppler Andrew
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1932-10-08
Filing date: 1932-10-08
Publication date: 1933-11-21
Anticipated expiration: 1950-11-21

Description

NOV. 21, 1933. EPPLER 1,935,625

LEVELING MACHINE Filed 001.- 8, 1932 5 Sheets-Sheet l Fig: 1.

B F I VE/V 70/1 Mum NOV. 21, 1933. A P ER 1,935,625

LEVELING MACHINE Filed Oct. 8, 1932 6 Sheets-Sheet 2 Fig 2.

I69 /-d ms fij 220 lag I 246 24% I86 3 I Q 288 l Nov. 21, 1933. A. EPPLER LEVELING MACHINE Filed Oct. 8, 1932 6 Sheets-Sheet 3 Nov. 21, 1933. A, E E 1,935,625

LEVELING MACHINE Filed Oct 8, 1952 6 Sheets-Sheet 4 Fig. 4.

Nov. 21, 1933. EPPLER 1,935,625

LEVELING MACHINE Filed Oct. 8, 1932 6 Sheets-Sheet 5 Nov. 21, 1933. A. EPPLER LEVELING MACHINE Filed Oct. 8, 1932 6 Sheets-Sheet 6 x 1 x u l x Patented net. 31,. 1933 LEVELING MACHINE Andrew Eppler, Lynn, Mass, assignor to United Shoe Machinery Corporation, Paterson, N. J at corporation of New Jersey Application October 8, 1932. Serial No. 636,873

46 Claims.

This invention relates to machines for use in the manufacture of 'boots and shoes (hereinafter referred to generically as shoes) for performing what is known as the leveling operation.

Ihe invention is herein illustrated as embodied in a machine of that type in which the shoe is .operated upon progressively by relative movements of a shoe support and a leveling tool, such as a roll, in directions lengthwise of the shoe,

' 11 and-in which the relative movements are effected by power-operated means continuously under control of the operator so that different portions of the sole of the shoemay be treated selectively in the manner determined by the operator in accordance with the requirements of the particular shoe. It is to be understood, how ever, that in various novel aspects the invention is not limited to machines of that particular character. I I

'An object of the invention, among others, is tov provide improvements in machines of the above-mentioned type, to the end that shoes may be more efiectively and satisfactorily treated than heretofore by the use of such machines, It is alsoan object to provide a machine convenient for use'and one that may be operated and controlled with but little effort on the part of the operator. To these and other ends, the machine herein shown, in one important aspect, comprises novel means whereby relative movements of the shoe support and the leveling tool are effected and controlled in such manner as to permit the extreme toe end' of the sole to be satisfactorily treated without any danger of ex cessive bending of the margin of the sole by the action of the tool thereon. In the construction shown the shoe supporter jack 'is moved relatively to the leveling roll in directionslengthwise of the shoe by power-operated means which is continuously under control of theoperator as and for the purpose hereinabove described; and mechanism is provided for imparting automatically to the roll in predetermined relation to the movement of the shoe support, movementheightwise of the shoe into initial engagement therewith on the bottoinface of the toe endof the sole and reverse movement finally out of engagement with the shoe from aposition in the same relation to the .toe end of the sole. There is accordingly no dangerof excessive bending of the margin of the toe end .of the sole by running of the roll on or off the shoe. As herein illustrated, the roll receives its movement into engagement with the shoe prior to the first rearward movement of the shoe support (i. e., movement of the support in a direction away from the operator), and is carried out of engagement with the shoe only after the final forward movement of the shoe support, the movements'of the roll and the shoe support being effected under control of power-driven cams shaped and arranged for the accomplishment of these results, By reason of this construction the proper leveling of the toe end of the sole is facilitated, since the operator may readily bring the machine to a stop with the shoe support at the limit of its forward movement and the roll in engagement With-the toe end of the sole, after which he'may tip the roll laterally of the .shoe by means provided for that purpose to. shape the toe end of the sole properlythroughout its width. To facilitate the mounting of the shoe on the shoe support and its removal therefrom, the construction shown is also such'that the roll is moved'lengthwise of the shoe in forward and rearward directions simultaneously with its movements heightwise thereof as above-described, so that it is'well retracted from over the toe end of the shoe prior to and after the leveling operation; and in this aspect a novel feature of the invention is further to be recognized in means for imparting to the leveling tool positioning and retractive movements lengthwise of the shoe.

As a further feature, the invention provides novel means whereby the leveling tool may be controlled by the operatorin such manner as to apply theleveling pressure selectively to one or more portions of, the shoe bottom Without pres- Q sure onother portions or to vary the amount of pressure applied. As herein illustrated the leveling roll is pressed down upon the shoe bottom by power-operatedmeans including a rod connected to'a vertically swinging carrier that supports the roll, and for the purpose in view there is provided. 'treadleoperated mechanism arranged to act through this rod to support the roll or lift it from the shoe at any time when the operator so desires. I

Facility in the control of the machine is further afforded, in :the construction shown, by the provision of hand-operated members at opposite sides of the machine, one for controlling the power operation of the machine and the other for tipping the roll laterally of the shoe, combined with means whereby the roll is pressed upon the shoe bottom as a part of the power operation without special attention on the part of the operator. Accordingly all that the operator has to do under most operating conditions is to manipulate these two controlling members. On

the other hand, at any time when it is desirable for the operator further to control the leveling roll by use of the above-mentioned treadle, he is free to do so since there is no other member which he is required to control with his foot.

The above and other features of the invention, including various novel details of construction and combinations of parts, will now be more particularly described by reference to the accompanying drawings and pointed out in the claims.

In the drawings,

Fig. 1 is a view in front elevation of a machine embodying the present invention;

Fig. 2 is a view in left hand side elevation of the machine shown in Fig. 1;

Fig. 3 is a plan View with parts broken away;

Fig. 4 is a view similar to Fig. 2 illustrating the positions of the parts at the completion of rearward swinging movement of the jack;

Fig. 5 is an enlarged detail view of the jac mechanism as seen from the left; a

Fig. 6 is a View partly in elevation and partly in section of a reverse friction driving mechanism and controlling means therefor with which the machine is provided;

Fig. 7 is a section on the line VIIVII of Fig. 6;

Fig. 8 is a view partly in end elevation and partly in section on the line VIIIVIII of Fig. 6;

Fig. 9 is a section on the line IXIX of Fig. 3, and

Fig. 10 is a section on the line XX of Fig. 3.

The main frame 20 of the illustrated machine has pivotally connected thereto a shoe support or jack 22 to which swinging movements are imparted by power-operated mechanism, hereinafter described, to carry the shoe back and forth beneath a leveling roll 24 which is yieldingly forced down on the shoe bottom to apply leveling pressure progressively to the sole and to which lateral tipping movements may be imparted by means under control of the operator to cause the leveling pressure to be applied to the margins of the sole. The jack 22 is in many respects similar to the disclosure of Letters Patent No. 1,239,664, granted on September 11, 1917 upon an application of W. C. Baxter, and comprises a toe post 26 fulcrumed on a short transversely extending shaft 28 mounted in suitable bearings in the frame 20 and a heel post 30 also fulcrumed on the shaft 28 and connected to the toe post by a threaded adjusting rod 32. The rod 32 is provided with oppositely threaded portions which engage

members

35, 37 pivotally connected respectively to the toe and

heel posts

26, 30. Fast to the outer end of the rod 32 is a hand wheel 34 fer turning the rod to move the heel post 30 toward or from the toe post and thus to vary the size adjustmentof the jack to accommodate shoes of different lengths. It will be evident that by this adjustment the ends of the toes of slides of different lengths are positioned in substantially the same location. The toe and heel posts are provided with means for supporting a shoe and last for the leveling operation compris ing a self-adjusting toe support 36 carried by the toe post 26 and a spindle 38 carried by the heel post 30, the construction being such that a longlegged boot also may be supported on the jack. The spindle 38 extends through an enlarged opening formedin a plate 40 also carried by the heel post 30, which plate is free to tip about an axis extending rater-any of the shoe to adjust itself to the top face of the cone of the last. This plate and the the support 36 are constructed substantially as disclosed in a copending application of mine, Ser. No. 628,354, filed August 11, 1932, and accordingly are not described herein in detail. The spindle 88 iscarried by a block 42 which is pivoted at 44 to the top of the heel post 30 to swing in directions lengthwise of the shoe. The block 42 is connected by a link 46 to mechanism which will presently be described whereby the block and spindle may be swung to press the toe end of the shoe firmly down upon the toe support 36.

The illustrated machine may also be provided with a saddle 48, shown in Fig. 5 but omitted from the other views, for use in jacking a shoe alternatively with the spindle-tipping mechanism just referred to. The saddle 4S, similarly to the disclosure of Letters Patent No. 1,263,361, granted on April 23, 1918 upon an application of W. C. Baxter, is connected to the two arms of a bifurcated lever 50 by strong springs 52, and when the saddle is used the lever 50, the arms of which are pivoted at 54 to blocks slidingly mounted in slots 56 on the toe post 26, pulls it down tightly over the shoe and is then locked to a segment 58 on the heel post. The slots 56 are concentric with the shaft 28 to permit relative movements of the toe and heel posts without disturbing the relation between the lever 50 and the heel post, as explained in the last-mentioned Letters Patent.

The relation of the lever 50 to the spindletipping mechanism will now be described. Pivo'tally connected at 60 to the heel post 30, one on each side thereof, are links 62 the rear ends of which are connected to the arms of the lever 56 by short upwardly extending links 64. The links 62 have pivotally connected thereto at 66 downwardly extending links 68 which carry a horizontal pin 70 extending through a slot 72 formed in a member 74 (Figs. 1 and 5) pivoted to the lower end of the link 46. Pivotally conmay be swung up into position to serve as an abutment for the horizontal pin 70,as shown in Figs. 1, 2 and 4, or down as shown in Fig. 5. When the member 76 is in the latter positionthe pin 70 has free movement in the slot 72 as the lever 50 is swung downwardly so that no motion is imparted to the link 46 in operating the saddle 48. When the member 76 is in the position shown in Figs. 1, 2 and 4 downward movement of the lever 50 forces the link 46 downward to operate the spindle 38 by engagement of the pin 70 with the member 7 6. The member 7 6 is held in the position shown in Figs. 1, 2 and 4 by a spring-press ed pin 78 which enters a hole 80 therein (Fig. 5) The mechanism for thus rendering the lever 50 effective to operate either the saddle '48 or the link 46 is generally similar to the disclosure of Letters Patent No. 1,719,158, granted on July'2, 1929 upon an application of E. E. Winkley and H. A. Davenport.

In the illustrated machine the jack 22 as a whole is swung about theshaft 28 by a cam 90 and connections therefrom to the jack which may be'adjusted to vary the extent of the swinging movements of the jack in accordance with the length of the shoe being operated upon. The cam 90 is formed in one side of a cam wheel 92 carried by a cam shaft 94 which is mounted transversely in the frame 20 and is connected to power-operated means, hereinafter described, which is'continuously under manual control and is arranged to rotate the cam wheel 92 in opposite directions at the will of the operator to impart to the jack its swinging movements. As shown *11 nected to the member 74 is a member 76 which. 3

a spindle 132.

particularly in'Fig. 5, the toe post 26 is provided with a rearwardly extending arm 98 connected by means of a link 100 to a rocking lever 102 which is pivoted at 104 to the frame and carries at itsrear end a roll 10,6 engaged by the cam 90. The arm 98 and the lever 102 are provided respectively with

segmental slots

108, 110, in which there are slidably mounted

blocks

112, 114, pivotally connected to the ends, of the link 100. The link 100 is pivotally connected intermediate its ends at 116 to a link 118 pivoted at 120 to the frame 20. The jack 22 is thus oscillated. by the rocking of the lever 102 about its fulcrum and its amplitude of oscillation can be adjusted by swinging the link 100 about its pivot 116 to vary the effective lengthsof the arm 98 and the lever 102. s

For adjusting the position of the link 100 there is provided a lever 122 fulcrumed at 124 to the arm 98. Thelever 122 is connected by means of a link 126 to a downwardly extending arm 128 with which the heel post is providedand has pivotally connected toits upper end a member 130 in which there is rotatably mounted The spindle 132 is provided with a rearwardly extending threaded portion which extends through a member 136 pivoted on the upper end of the link 100. The spindle 132 is held against lengthwise movement relatively to r the member 130 by oppositely disposed collars 138.

The construction is therefore such that as the heel post 30 isswung about its fulcrum 28 by movement of the threaded adjusting member 32 in accordance with the length of the shoe to be operated upon the link 100 is moved along the

segmental slots

108, 110 to vary correspondingly the extent of the swinging movements of the jack. When the parts are in theirinoperative or idle positions,

thesegmental slots

108, 116

j are concentric with thefulcrum 116 of the link 100 so that this adjustment may be made without moving the toe post 26. The parts are therefore so designed that the extent of the swinging movement imparted to the jack 22 by the cam is proportional to the size adjustment of the jack. In order further to vary the extent of the swinging movements of the jack to accommodate shoes ofdiflerent styles, there is provided means for initially adjusting the position of the link relatively to the arm 98 and the lever 102 without adjustment of the jack. As shown in Fig. 5, there is rotatably mounted in the member 130 a rod 140 which is held against lengthwise movement relatively to the member 130 by a collar 142 and a skew gear 144 which is fast on the rod 140 and the teeth of which mesh with the teeth of a skew gear 146 fast on the spindle 132. The rod 140 extends forwardly and has secured to its outer end a hand wheel 148 conveniently accessible to the operator and by means of which the rod and the spindle 132 may be rotated to move the link100 along the segmental'slots 108, without disturbing the size adjustment of the jack.

The machine herein shown is so constructed that the leveling roll 24 is maintained initially in a position higher than that which it occupies in operating upon the shoe and in which also it is retracted rearwardly lengthwise of the shoe. In predetermined relation to the first rearward swinging. movement of theijack, prior to thebe-' ginning or" such movement; the roll receives a forward positioning movement and is also swimg downwardly to. carry it into initial engagement with'the shoe on the bottom .faceof the toe end after the jack has arrived at thelimit of its forthe roll :24 is moved forwardly at the time and of the sole, thus insuring against any damageto the sole or undue bending of it's margin at the toe end by contact of the roll with its edge. The roll is mounted for turning movement on the rod 159 supported by a holder 160 and is movable also lengthwise of the rod, springs .161 being provided at the opposite ends of the roll which normally centralize it lengthwise of the rod but permit it to move in one direction or the other along the rod for better acoommodation'to the shapes of different portions of the shoe bottom. The holder 160 is a yoke-shaped1 device, portions of which are slidinglymovable lengthwise of the shoe in guideways formed in the" arms of a forked roll carrier 162 which is clamped at 164 to the forward end of a hollow shaft 166, this shaft being-mounted for turning movement in an arm 168 provided with a forked rear end fulcrurned at 170 on the frame of the machine for swinging movements heightwise of the shoe. The holder 160 is provided with a depending lug 172 in which'there is threaded the forward end of a rod 174 that extends rearwardly through the hollow shaft 166 and is connected at its rear end to a yoke 176 in which it is mounted 100 for turning movement. At its forward end the rod 1'74 is shaped at 178 to receive a wrench by which it may be turned to adjust the holder 160 lengthwise of the shoe, the holder being held in adjusted position by a lock nut 180.105 The yoke 1'76 is connected to the upper end of a lever 182 bya link 184, the lever being fulcrumed at 186 on the frame 20, and pivotally connected to the lower end of the lever is one link 188 of a toggle, the other link 190 of which is 110 pivoted to the frame. A tension spring 192 is connected at one end to the frame 20 and at its other end to a bar 194 connected tothe knee joint of the toggle, the spring therefore acting, when permitted, to straighten the toggle and thereby to impart forward movement to the holder 160 and the roll 24.

The toggle is controlled by a peripheral cam 196 on the cam wheel 92 through a lever 198 which is connected to the bar 194 by a rod 200. 0 The lever 198 is fulcrumed-at 202. on the frame 20 and carries at its forward end a roll- 204 (Fig. 2) engaged by the cam 196. The earn 196 is so shaped and arranged that at the beginning of the first turning movement of the camwheel 92 from its initial position, prior to the swinging of the jack by the cam 90, it permits the spring 192 to straighten the

toggle

188, 190, and thus to move the roll 24-forwardly' to a position over the toe end or" the sole before the roll engages the sole. In the final portion of the reverse turning movement of the cam wheel at the end of theoperation of the machine upon the shoe,"

ward movement, the cam 196 acts through the 35 lever198 and the rod 200 to'break'the toggle and thus to move the holder 160 and the roll toa retracted position so as not to interfere with theremoval of the shoe and the mounting of another shoeon the jack.

For controlling downward swinging movement ofv the arm 168 and for raising the arm tocarry' the roll 24 upwardly away fromthe shoe there is provided a rod 206 adjustable as to lengthand pivotally connected at 208 to the above-mentioned lever 198, the rod being provided at its upper end with a head 210 arranged to engage the lower sideof the arm. It will thus be seen that as in the manner above described the downward 248 (Fig. 4) and is fastened to this member by movement of the rod 206 under control of the lever 198 permits the roll at the same time to be swung downwardly by the arm 168, and when the jack is at the limit of its final forward movement the roll is swung upwardly away from the shoe by the rod 206 simultaneously with itsretractive movement lengthwise of the shoe effected by the swinging of the lever 198.

The downward swinging movement of the roll 24 which results from the above described downward movement of the rod 206 is effected yieldingly through a heavy spring 214 which is connected at one end to a lever 216 pivoted at 218 on the frame and at the other end to a rod 220 extending upwardly through the head 222 of a member 224 pivotally mounted on the arm 168, the rod being secured to the head 222 by clamping

nuts

226 and 228. Formed on the cam wheel 92 is a peripheral cam 230 in engagement with a roll 232 (Fig. 4) mounted on a downwardly extending arm 234 of the lever 216. The earn 230 thus acts through the spring 214 to press the roll upon the shoe bottom with the required force. The cam is so shaped that when the jack is in position for the roll to act on the downwardly curved shank portion of the shoe bottom the lever 216 is further depressed, thus not only compensating for the downward curve of the shank, but increasing the pressure of the roll upon this portion of the shoe bottom, which is desirable in view of the more pronounced transverse curvature of the shank portion of the sole as compared with the forepart. To limit the downward movement of the roll in case the machine is operated without any shoe on the jack, there is provided a screw 236 on the frame arranged to serve as an abutment in engagement with arm 168. The screw 236 is locked in adjusted position by a nut 238.

From the foregoing description it will be evident that the machine is so constructed as to prevent excessive bending of the margin of the toe end of the sole by the roll 24, such as might otherwise result from the action of the spring 214 on the arm 168 as the roll passes on or ofi the shoe, since the roll is always advanced to a position over the bottom face of the toe end of the sole before it engages the shoe and the jack in its forward movement never passes beyond a position in which the roll is in that relation to the sole, the roll being lifted from the shoe after the jack has arrived in that position. The roll 24 may be tipped laterally of the shoe at various inclinations for operating along the side edges of the shoe bottom by turning movement of the previously-mentioned hollow shaft 166. For this purpose there is provided a lever 240 loosely mounted on the right-hand end of the shaft 28 and connected at 244 to a' rod 246 which extends rearwardly through a

member nuts

250, 252. The member 248 is pivoted on an arm 254 which is fast on one end of a shaft 260 (Fig. 3) rotatably mounted in the frame 26,

the shaft having fast thereon a segmental bevel gear 264. The' gear 264 engages a similar gear 266 fastened to the shaft 166 by a clamping screw 268. The lever 240 is provided with a handle portion 270 extending forwardly into a convenient position for use by the operator and by means of which the lever may be swung to tip the roll 24 as desired.

The construction of the machine is further such as to enable the operator to determine selectively the portions of the shoe bottom upon which the leveling roll operates by control of the swinging movements of the arm 168. More particularly, as illustrated, the operator is enabled to swing the roll upwardly away from the shoe bottom at any time, or to hold it upraised so as not to contact with the shoe until some particular portion of the sole is positioned under the roll. For this purpose there is associated with the rod 220 a gripping device comprising a plurality of plates 272 (Fig. 2) controlled by a lever 274 and provided with apertures through which the rod 220 extends. The lever 274 is fulcrumed at 276 to the frame and is connected by a rod 2'78 to a treadle 280 pivoted at 202 on the frame. A spring 282 holds the treadle normally in raised position against an adjustable stop 283. The plates 272 are clamped at one end against a depending lug 284 on the lever 274 by a screw 286 on the lever, while at their opposite ends they rest against an upstanding lug 288 on the frame 20 and are pressed downwardly against this lug by a spring plunger 290 on the lever 274. Normally, as shown in Fig. 2, the plates are thus positioned in such relation to the rod'220 as to permit the latter to move freely upwardly or downward through the apertures in the plates. If the treadle 280, however, is depressed by the operator, the upwardswinging movement of the lever 274 causes the plates to tip and thereby grip the rod 220 and thus not only to prevent downward movement of the rod but by further movement of the 'treadle to lift the rod. The operator may thus hold the roll upraised until the jack is in position for the roll to operate on the shank portion of the sole, in case it is desired to level the shank portion without leveling the fore-part. In operating, moreover, on shoes of the cottage shank type the operator may, after leveling one side of the shank with the roll in an inclined position, lift the roll by the treadle and place it in an oppositely inclined position onthe other side of the shank without engaging the central ridge of the sole. Use of the treadle, moreover, enables the operator to lessen at any time the force with which the roll is pressed down upon the shoe bottom through the spring 214.

The cam wheel 92, through the operation of which the leveling roll is controlled automatically in the manner previously described and through which swinging movements also are imparted to the jack, is operated by power-driven means which is continuously under control of the operator so that he may interrupt the operation of the machine at any time and may also cause the jack to swing in one direction or the other as desired. For this purpose the shaft 94 on which the cam wheel is mounted has fast thereon a worm gear 292 (Fig. 6) engaged by a worm 294 on a shaft 296. The shaft 296 is driven in opposite directions at the will of the operator through oppositely disposed clutches 298, 300, the driving members of these clutches being constantly rotated in opposite directions and the driven members so mounted that either clutch can be made to drive the shaft 296 at will. In the illustrated machine power is derived from a motor 362 (Figs. 1 and 3), which by means of a belt 304 drives a pulley 306 fast on the outer end of a short shaft 308 journaled in the frame 20 in parallel relation to the clutch shaft 296. Loosely mounted on the clutch shaft 296 in spaced relation are a pair of

gears

310, 312, the gear 312 being constantly rotated by a gear 314 (Fig. 9) fast on the shaft308. The gear 310 is constantly rotated in the opposite direction through an idler gear316 (Fig. 10) which meshes with it and with a gear318 fast on the shaft 308. The

gears

316, 312 are provided, as shown, with laterally extending flanges 326, 322;:which have internal clutch surfaces and'a'ct respectively as the driving members of thev opposed clutches 298,300. Cooperating therewith are driven members 328, 330 carried by a sleeve 332 which is mounted for slid- .ing movement lengthwise of the shaft 296 and is connected to the shaft by splines 334. The sleeve 332 is moved lengthwise of the shaft 296 to move one or the other of the clutch members 328, 330 into engagement with its cooperating clutch member by a lever 336 which is pivoted at 348 to the frame 26 and has pivotally connected to its upper end arod 342 whichi's connected at its-opposite end by means of a yoke 344 to the upper end of an arm 346 fast on the right-hand end of a rock shaft 348 journaled in the front of the frame 20. The lever 336 has a downwardly extending arm'358 which is bifurcated to straddle the sleeve 332, and pivotally connected to the lower end of this armare blocks 352 which fit between'thrust washers 354, 356 mounted on the sleeve 332 between the blocks and the clutch members 328, 330. Loosely mounted on the lefthand end of the rock shaft 348 (Figs. land 2) is a lever 358 carrying at its upper end a handle 360. The lever 358 is secured, as shown, to a second lever 362 fast on the rock shaft 348 by means of

bolts

364, 366, which extend respectively through arcuate slots 368, 870 formed in the lever 362, the construction thus being such that the lever 358 may be adjusted relatively to the lever 362 to move the handle 360 into a convenient position to be grasped by the hand of the operator. It will be understood that by the use of the handle 368 the lever 358 may be swung to'move the sleeve 332 either forwardly or rearwardly to connect either of the friction clutches v 238, 360, to the shaft 296, thus causing the jack 22 to be swung in either direction desired. The lever 358 is held normally in an idleposition with the machine at rest by equalizing springs 374,

376 which surround the rod 342 and bear at their inner ends against 2. lug 378 on the frame 20 and at their outer ends against collars 38 6, 382 fastened to the rod 342.

illustrated machine is further= provided with means for automatically throwing the above-described friction driving mechanism out of operation and movingthe handle 360 to its idle position the cam'wheel 92 is turned beyond a predeterrn... dpcint in either direction, thus insuring againstdamage to the machine. As shown, thi means comprises a pin 384 which is carried by e worm wheel 292 and is arranged to engage the rearwardly extendingarm 386 of a bell-cranklever fulcrumed at 398 on the frame of the machine. This lever is provided with depending arm 392 which is forkedto straddle a bushing 394 (Fig. '7), the bushing being threaded on the rod 342 and heldin adjusted position by a is accordingly such that if the cam wheel 92 is tu ed beyond a definite point in either direction pin 384 engages the arm 386 and through the yielding connections above described. moves the rod 342 in the direction to disconnect the friction driving mechanism from the shaft 296. It will be seen that in this movement the rod 342 also acts through the arm 346 to rock the shaft 348 in a direction to move the clutch-controlling lever 358 and the handle 360 to idle position. v

Simultaneously with the throwing out of the friction driving mechanism, either by the abovedescribed safety device or by normal use of the hand lever 358,2. brake'band410 is applied to a brake drum 412 on the shaft 296 so as to-hold the shaft from further rotation. The brake band 7 the frame 20 by a bolt 418 and with a laterally extending arni42o'arranged to be engaged by an j adjustable screw 422 carried by a lever 424 ful-' crumed at 426 on the frame of the machine. The lever 424 has pivotally connected to it at 428 one member 430 of afoggle the other member 432 of which is pivoted at 434 to; the frame 20. The member 432 of the toggleis provided with a pair of upwardly extending

arms

436, 438 which are slotted to receive a pin 440 carried by a member 442 clamped to the rod 342. I With this construction, when the rod 342 is moved in either direction to disconnect the friction driving mechanism from the shaft 296 the toggle member 432 is swung about its pivot 434 to straighten thetcggle. Straightening of the toggle causes the lever 424 to beswung downwardly and through the screw 422 to apply the brake band 416 to thebrake drum412, thus holding the shaft 296 from rotaticn. When the rod 242is moved in a direction to connect one or the other of theclutches 298, 300,

to the shaft 296 the toggle member 432 is swung about its pivot to break the toggle and release the band 410 from the drum 412.

'In the operation of the machine, briefly summarized, the operator mounts a shoe on the spindle 38, turns the hand wheel 34, if necessary,

to adjust the jack tothe length of the shoe, and? then by'movement of the lever 50 tips the spindle 38 to clamp the shoe firmly on the toe support 36. It will be understood that if the saddle 48 is to be used, the spindle-tippingmechanism will be disconnected from the lever 50 by turning the abutment member '26 downwardly and the shoe will be pressed firmly against the toe. support 36 by the saddle 48 when the lever is operated. The operator then grasps the handle 360 and by pushing upon it connects the clutch 298 to the shaft 296t0 cause the cam wheel 92to be rotated in a clockwise direction as viewed in Fig. 2. The first result of this-movement of the cam wheel is that the'lever 198 is permitted to turn in a counterclockwise direction by its con trolling cam 196 under the influence of the spring 192, the latter accordingly straightening the

toggle

188, 190 to impart forward movement to the roll 24. Simultaneously the rod 206 is lowered by the lever 198, thus permitting downward swinging movement of the arm 168 and the roll 24" under the influence of the spring 214. The roll is accordingly moved in an inclined path indicated diagrammatically at a in Fig. 2 so as to engage the shoe initially upon the bottom face of the toe end of the sole in such a location as to avoid any excessive bending of the margin of the sole, yet near enough to the end of the toe to permit proper leveling of the toe portionof the sole. It will be understood that the location in which the roll thus first engages the shoe may be variedlby adjustment of the roll holder 160 through turning movement of the rod 174. By reasonof the relation of the cam 196 to the jack-operating cam 90 the above-described movement of the roll takes place prior to any movement of the jack. If the operator continues to push upon the handle 360 the cam 90 next becomes effective to impart to the jack its first rearward movement to cause the leveling roll to operate progressively along the shoe bottom, during which movement and thereafter during such other movements as the jack receives the operator may, by use of the handle 270, tip the roll 24 in one direction or the other at any desired inclination for applying the proper leveling pressure to the margin of the sole. At any time, moreover, by control of the handle 360 the operator may stop the movement of the jack and may throw the clutch 300 into operation to reverse the direction of the movement. A plurality of short movements of the jack. may thus be effected while the roll is operating upon some particular portion of the shoe bottom, such as the shank. A forward movement of the jack also may be effected to the limit determined by the shape of the cam 90, whereupon the operator may bring the machine to a stop with the roll still in contact with the toe end of the sole and may then tip the roll to assist in properly leveling this portion of the sole. If it. should be desired at any time to prevent the roll from operating upon some particular portion of the shoe bottom, for example to prevent it from engaging the sole at the ball line in operating upon shoes of certain styles or to prevent it from engaging the sole along the central line of the shank in. operating on cottage shank shoes, the operator may lift the roll from the shoe by depression of the treadle 280. When the leveling operation has been satisfactorily completed the cam wheel 92 is made to turn far enough in one direction to lift and retract the leveling roll lengthwise of the shoe, such movement of the roll occurring after the jack has arrived at the limit of its forward movement. The operator may then remove the shoe and mount another one on the jack, the roll 24 occupying such a retracted position as not to interfere in any way with these operations.

Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a leveling machine, a shoe support, a level-- ing tool, means for moving said shoe support in directions lengthwise of a shoe thereon to cause the leveling tool to operate progressively along the shoe bottom, and mechanism for imparting to said leveling tool a movement lengthwise of the shoe from a retracted position to a position over the toe end of the shoe bottom prior to the operation of said tool upon the shoe.

2. In a leveling machine, a shoe support, a leveling tool, power-operated means for moving said shoe support in directions lengthwise of a shoe thereon to cause the leveling tool to operate progressively along the shoe bottom, and poweroperated means for imparting to said leveling tool apositioning movement lengthwise of the shoe in automatically determined relation to the movement of the shoe support prior to the operation of said tool upon the shoe.

3. In a leveling machine, a shoe support constructed to receive a shoe with its toe end pointing rearwardly, a leveling tool, power-operated means for moving said shoe support in directions lengthwise of a shoe thereon to cause the leveling tool to operate progressively along the shoe bot-.

tom, and automatic means for maintaining said tool initially in a rearwardly'retracted position and for imparting to it a forward positioning movement substantially at the beginning of the operation of the machine.

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

leveling roll, power-operated means for moving said shoe support in directions lengthwise of a shoe thereon to cause the roll to operate progressively along the shoe bottom, and mechanism constructed and arranged to maintain said roll initially in a position retracted from over the bottom of the shoe and to impart to it a movement lengthwise of the shoe to a position over the toe end of the shoe bottom in automatically cally determined relation to the movement of the shoe support prior to the operation of the roll upon the shoe.

6. In a leveling machine, a shoe support, a leveling roll, power-operated means comprising a cam for moving said shoe support in directions lengthwise or" a shoe thereon to cause the roll to operate progressively along the shoe bottom, mechanism for imparting to said leveling roll a movement lengthwise of the shoe to a position over the toe end of the shoe bottom substantially at the beginning of the operation of the machine, and a cam movable in fixed relation to said firstmentioned cam for controlling said mechanism.

'7. In a leveling machine, a shoe support constructed to receive a shoe with its toe end pointing rearwardly, a leveling roll, power-operated means for moving said shoe support in directions lengthwise of a shoethereon to cause the roll to operate progressively-along the shoe bottom, mechanism comprising a spring-operated toggle for imparting to the roll a forward movement substantially at the beginning of the operation of the machine, and a cam arranged to control said toggle.

8. In a leveling machine, a shoe support, a leveling roll, power-operated means for moving said shoe support in directions lengthwise of a shoe thereon to cause the roll to operate progressively along the shoe bottom, a roll carrier movable heightwise of the shoe to press the roll upon the shoe bottom, and automatic means for imparting to the roll a positioning movement lengthwise of the shoe relatively to said carrier substantially at the beginning of the operation of the machine prior to the operation of the, roll upon the shoe.

9. In a leveling machine, a shoe support, a leveling tool, power-operiated means for moving said shoe support in directions lengthwise of a shoe thereon to cause the leveling tool to operate progressively along the shoe bottom, and automatic means for imparting to said tool a movement lengthwise of the shoe from a retracted position to a position over the toe end of the shoe bottom prior to the movement of the shoe suptoe end pointingrearwardly, a leveling roll, pow-i."

er-operated means for imparting to said shoe support first a rearward movement and thereafter forward and rearward movements to cause the roll to operate progressively along the shoe bottom, and automatic means for imparting to said roll forward movement from a retracted position to a position over the toe end of the shoe bottom prior to the first rearward movement of the shoe support. g

11. In a leveling machine, a; shoe support, a leveling tool, power-operated means continuously under controlof the operator for moving said shoe support in opposite directions at the will of the operator to cause said tool to operate progressively along the shoe bottom, and power-operated means for imparting to said leveling tool apositioning 'movement lengthwise of the shoe in automatically determined relation to the first movement of the shoe support prior to the operation-of said tool upon the shoe.

12. In a leveling machine, a shoe support constructed to receive a shoe with its toe end p0inting rearwardly, a leveling roll, power-operated means continuously under control of the operator for moving said shoe support first rearwardly and thereafter forwardly and rearwardly at the will of the operator to cause the roll to operate progressively along the shoe bottom, and mechanism for imparting to said roll a forward positioning movement in automatically determined relation to the first rearward movement or" the shoe support prior to the operation of the roll upon the shoe.

13. Ina leveling machine, a shoe support, a leveling roll, power-operated means continuously under control of the operator for moving said shoe support in opposite directions atthe will of the operator to cause the roll to operate progressively along the shoe bottom, and cam-controlled means for imparting to said roll movementfrom a retracted position to a position over the toe end of the shoe bottom prior to the first movement of the shoe support.

14. In a leveling machine, a shoe support, a leveling tool, means for moving said shoe support in directions lengthwise of a shoe thereon to cause the leveling toolto operate. progressively along the shoe bottom, and'mechanism for imparting to said leveling tool movement lengthwise of the shoe from a retracted position to a position over the toe end of theshoe bottom and for also moving it heightwise of the shoe toward the shoe bottom prior to the operation of the toolupon the shoe.

15. In a'leveling machine; a shoe support, a

leveling roll, power-operated means for moving said shoe support in directions lengthwise of" a shoe thereonto cause the roll to operate progressively along the shoe bottom, and mechanism for imparting to said rollpositioning movement lengthwise of the shoe and also movement heightwise of the shoe toward the shoe bottom in auto I matically determined relation to the movement of the shoe support. s

16. Ina leveling machine, a shoe support constructed to receive a shoe bottom upward withits toe end pointing rearwardly, a leveling roll, power-operated meansifor moving said shoe support in directions lengthwise of a shoe thereon to cause the roll to operate progressively along the shoe bottom, and mechanism constructed and a ranged to maintain said roll initially in a rearward retracted and upraised position and for moving it forwardly and downwardly in automat ically determined relation to the movement of the shoepsupport to carry it into initial engagement with the bottom face of the toe end of the sole of the shoe. 7

17. In a leveling machine, a shoe support, a leveling roll, power-operated means for moving said shoe support in directions lengthwise oi'a shoe thereon to cause the roll to operate progressively along the shoe bottom, andautomatic 1 means forfimparting to said roll positioning movement lengthwise of the shoe and also move-' mentheightwise oi the shoe toward the shoe bottom prior to themovement oi the shoe support.

In a leveling machine, a shoe support, a leveling roll, power-operated means continuously under control of the operatorfor imparting to said shoe support movements ll'l opposite directions at the will of the operator'to cause the roll.

to operate progressively along the shoe bottom, and automatic means for moving said roll lengthwise oi the shoe to a position over the toe end of the shoe bottom andfor also moving it heightwise of the shoe into shoe-engaging position prior 7 to the first movement oi the shoe support.

19. In a leveling machine, a shoe support constructed to receive a shoe bottom upward with its toe end pointing rearwardly, aleveling roll, power-operated means continuously under control of the operator f or imparting to said shoe support first arearward movement and thereafter movements in opposite directions at the will of the operator to cause the roll to operate progressively along the shoe bottom, and means for moving the roll'iorwardly and downwardly in auto matically determined relation to the first rearward movement of the shoe supportto carryit into initial engagement with the bottom faceoi the toe end of the sole oi the shoe. Y a

20. In a leveling machine, a shoe support, a leveling roll, power-operated means for moving said shoe support in directions'lengthwise of a shoe thereon to cause the roll tooperate' progressively along the movable heightwise of the means for moving the roll lengthwise of the shoe relatively to said'carrier for also moving the carrier heigh wise of the shoe to carry the roll into operating position substantially at the beginning of the operation of the 21. in a leveling machine, a shoe support constructed to-receive a shoe bottom upward with its toe end pointing rearwardly, a leveling roll, power-ofaerated means for moving said shoe support in directions lengthwise of a shoe thereon to cause,"

shoe bottom, a roll carrier shoe, and automatic" bottom, a roll carrier mounted for swinging move-I ments heightwise of the shoe,spring means for moving said carrier downwardly to press the roll upon the shoe bottom, mechanism for imparting to the roll a forward positioning movement rela-' tiv'ely to the carrier substantially at the beginningof the operation of the machine, a cam-operated lever for'controlling saix mechanism, and a device controlled by lever for holding the carrier initially upraised and for releasing it to permit its downward movement as the roll is moved forwardly.

22. In alevelin machine," a shoe said shoe support in directions lengthwisefof a shoe thereon to cause'the leveling tool to op-v into initial engagement with the shoe on the support, a leveling tool, power-operated means for moving bottom face of the toe end of the sole prior to the movement of the shoe support.

23. In a leveling machine, a shoe support, a leveling tool, power-operated means for moving said shoe support in directions lengthwise of a shoe thereon to cause the leveling tool to operate progressively along the shoe bottom, and automatic means for imparting to said leveling tool movement lengthwise and heightwise of the shoe to carry it into initial engagement with the shoe on the bottom face of the toe end of the sole prior to the movement of the shoe support.

24. In a leveling machine, a shoe support adjustable to position the ends of the toes of shoes of different sizes in substantially the same location, a leveling tool, power-operated means continuously under control of the operator for moving said shoe support in opposite directions at the will of the operator to cause the leveling tool to operate progressively along the shoe bottom, and mechanism movable in automatically determined relation to the movement of the shoe support to carry the tool into position to contact with each shoe initially in a location over the bottom face of the toe end of the sole.

25. In a leveling machine, a shoe support, a leveling tool, power-operated means for moving said shoe support in directions lengthwise of a shoe thereon to cause the leveling tool to operate progressively along the shoe bottom, and automatic means for impartingto said leveling tool a positioning movement lengthwise of the shoe in automatically determined relation to the movement of the shoe support prior to the operation of the tool upon the shoe and a reverse movement after the leveling operation.

26. In a leveling machine, a shoe support constructed to receive a shoe bottom upward with its toe end pointing rearwardly, a leveling roll, power-operated means for moving said shoe support in directions lengthwise of a shoe thereon to cause the roll to operate progressively along the shoe bottom, and power-operated means for imparting tosaid roll a forward positioning movement and for also moving it downwardly in automatically determined relation to the movement of the shoe support substantially at the beginning of the operation of the machine and for lifting it and moving it rearwardly after the leveling operation.

27. In a leveling machine, a shoe support constructed to receive a shoe bottom upward with its toe end pointing rearwardly, a leveling roll,

' power-operated means continuously under control of the operator for imparting to said shoe support first a rearward movement and thereafter movements in opposite directions at the will of the operator to cause the roll to operate progressively along the shoe bottom, and automatic means constructed and arranged to move the roll forwardly and downwardly prior to the first rearward movement of the shoe support and to lift it and move it rearwardly after the final forward movement of the shoe support.

28. In a leveling machine, a shoe support constructed to receive a shoe bottom upward with its toe end pointing rearwardly, a leveling roll, power-operated means continuously under control of the operator for imparting to said shoe support first a rearward movement and thereafter movements in opposite directions at the will of the operator to cause the roll to operate progressively along the shoe bottom, and automatic means for lifting the roll and moving it rearwardly when the shoe support in its forward movement arrives in a position in which the roll movements in opposite directions at the will of the operator to; cause the roll to operate progressively along the shoe bottom, and mecha nism comprising a cam-operated lever for lifting the roll and moving it rearwardly when the shoe support in its forward movement arrives in a position in which the roll is in engagement with the toe end of the sole of the shoe.

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

leveling tool, power-operated means for moving said shoe support in directions lengthwise of a shoe thereon to cause the leveling tool to operate progressively along the shoe bottom, said means being so constructed as to terminate movement of the shoe support in one direction with the tool in engagement with the bottom face of the toe end of the shoe, and automatic means: for thereafter withdrawing the tool from engagement with the shoe.

31. In a leveling machine, a shoe support con- I structed to receive a shoe with its toe end pointing rearwardly, a leveling roll, power-operated means continuously under control of the operator for moving said shoe support first rearwardly and thereafter forwardly and rearwardly at the will of the operator to cause the roll to operate progressively along the shoe bottom, said means being constructed to prevent forward movement of the shoe support beyond a position in which the roll is in engagement with the bottom face of the toe end of the shoe, and automatic means for lifting the roll from the shoe at the end of the final forward movement of the shoe support.

32. In a leveling machine, a shoe support constructed to receive a shoe with its toe end pointing rearwardly, a leveling roll, power-operated means continuously under control of the operator for moving said shoe support first rearwardly and thereafter forwardly and rearwardly at the will of the operator to cause'theroll to operate progressively along the shoe bottom, said means being constructed to prevent forward movement of the shoe support beyond a position in which the roll is in engagement with the bottom face of the toe end of the sole, and means under control of the operator for tipping the roll about an axis extending lengthwise of the shoe while the roll is thus in contact with the toe end of the sole.

33. In a leveling machine, a shoe support, a leveling roll, power-operated means comprising a cam for moving said shoe support in opposite directions selectively at the will of the operator to cause the roll to operate progressively along the shoe bottom, mechanism for moving the roll into and out of contact with the shoe, and a cam controlling said mechanism and so formed and arranged in relation to said first-mentioned cam as to cause the roll to engage the shoe initially on the bottom face of the toe end of the sole prior Ill? 1 under control ofv the operator for effecting rel of difierent sizes in substantially the same-location, a leveling roll, power-operated means continuously under control of the operator formoving said shoe support in opposite directions ,at

.the will of the operator to cause theroll to operate progressively along the shoe bottom, and mechanism movable in automatically determined relation to the movements of the shoe support to carryv theroll heightwise of the shoeinto position to contact with, each shoe initially inra -1ocation over the bottom face of the toe end of the soleand to carry it reversely out of contact with the shoe when it is in the same relation to the sole. 7

35. In a leveling machine, a shoe support and a leveling tool relatively movable in directions lengthwise of a shoe on said support to cause the tool to operate progressively along the shoe bottom, a support for said tool movable heightwise of the shoe to press the tool upon the shoe bottom, a member movable by the operator, and a device arranged to connect with said tool support in response to movement of said member and thereafter to withdraw the tool from the shoe in response to further movement of the member.

36. In a leveling machine, a shoe support and a leveling tool relatively movable in directions lengthwise of a shoe on said support to cause the tool to operate progressively along the shoe bottom, a support for said tool movable heightwise of the shoe, mechanism comprising a rod connected to said tool support for pressing the tool down on the shoe bottom, a treadle, and a device arranged to grip said rod in response to movement of the treadle and thereafter to act through the rod to lift the tool from the shoe in response to further movement of the treadle.

37. In a leveling machine, a shoe support, a leveling tool, power-operated means for moving said shoe support in directions lengthwise of a shoe thereon to cause the tool to operate progressively along the shoe bottom, an arm supporting said tool and mounted for swinging movements heightwise or" the shoe, a member connected to said arm, a treadle, and a device arranged to grip said member in response to movement of the treadle and thereafter to act through said member to withdraw the tool from the shoe in response to further movement of the treadle.

38. In a leveling machine, a shoe support, a leveling tool, power-operated means for moving said shoe support indirections-lengthwise ofa shoe thereon to cause the tool to operate progressively along the shoe bottom, an arm supporting said tool andmounted for swinging movements heightwise ofthe shoe, power-operated means connected to said arm" for pressing the tool upon the shoe bottom, and a device movable by the operator and arranged to act through said poweroperated means to swingthe arm in a direction to withdraw the tool from the shoe.

39. In a leveling machine, a shoe support, a leveling tool, power-operated means for moving said shoe support in directions lengthwise of a shoe thereon to cause the tool to operate progressively along the shoe bottom, an arm supporting said tool and mounted for swinging movements heightwise of the shoe, power-operated means comprising a rod connected to said arm for pressing the tool upon the shoe bottom, a treadle, and a device movable by the treadle for first effecting a connection with said rod and for thereafter moving the rod to lift the tool from the shoe.

40. In a leveling machine, a shoe support, a leveling roll, power-operated means continuously to cause the roll to operate ,progressivelyalong the shoe bottom, mechanism also continuously under control of the operator for tipping the roll laterallyoff the shoe, means for maintaining-the roll in -pressure-applying relation to, the shoe without special attention on the part, of the operator, andrneans to enable the operator at will; to withdraw the rollfrom contact with the shoe.

41". In a leveling machine, a shoe, supportya leveling roll, power-operated means continuously under control of the operator for eiiecting relative movements of said support and roll in; opposite directions at the will of the operator to cause the roll to operate progressively along the shoe bottom, mechanism also continuously under control of the operator for tipping the roll laterally of the shoe, power-operatedmeans ineluding a spring for pressing the roll on the bottom of the shoe, and mechanism arranged to enable the operator at will to relax the pressure of the roll on the shoe.

4-2. In a leveling machine, a shoe support, a;

leveling roll, power-operated means continuously under control of the operator for efiecting relative movements of said shoe support and roll in opposite directions at the will of the operator to cause the roll to operate progressively along 1 the shoe bottom, a hand-operated member for controlling said power means, mechanism comprising another hand-operated member for tipping the roll laterally of the shoe, means for maintaining the roll in pressure-applying remtion to the shoe without special attention on the part of the operator, and treadle-operated mechanism arranged to enable the operator at will to withdraw the roll from contact with the shoe.

as. In a leveling machine, a shoe support, a ;1.15

leveling rOILpo'Wer-operated means continuously under control of the operator for efiecting relative movements of said shoe support and roll in opposite directions at the will of the operator to cause the roll to operate progressively along the shoe bottom, a hand-operated member for-controlling said power means, mechanism comprising another hand-operated member for tipping theroll laterally of the shoe, mechanism including a spring for pressing the roll upon a the shoe bottom Without special attention on the part of the operator, and treadle-operated means arranged to enable the operator at will to counteract the force of said spring.

,44. In a leveling machine, a shoe support, a leveling roll, power-operated means continuously under'control of the operator for efiecting relative movements of said shoe support and roll in opposite directions at the will of the operator to cause the roll to operate progressively along the shoe bottom, a hand-operated member for controlling said power means, mechanism comprising another hand-operated member for tipping the roll laterally of the shoe, an arm supporting-the roll and movable heightwise of the shoe, power-operated means including a rod connected to said arm for pressing the roll yieldingly upon the shoe bottom, and treadle-operated mechanism arranged to act on said rod at the will of the operator to relax the pressure of the roll on the shoe. I

.45. In a'leveling machine, a shoe support, a leveling roll,power-operated means continuously under control of the operator for imparting to said shoe support movements in opposite direc- 1,;

' shoebottom without special attention on the part of the operator.

46. In a leveling machine, a shoe support, a leveling roll, power-operated means continuously under control of the operator for imparting to said-shoe support movements in opposite directions at thewill offthe operator to cause the r'ol1 to operate progressively along the'shoe'bottom,

' a hand-operated member for controlling 'saiol power means, mechanism comprising another hand-operated member for tipping the roll laterally of the shoe at the will of the operator; a roll support, and power-operated cam means arranged to act on said roll support to press the roll upon the shoe bottom;

7 ANDREW EPPLERl