US2489416A - Machine for use in manufacture of shoes - Google Patents

Description

Nov. 29, 1949 H. A. IMHOF MACXQNE FOR USE IN MANUFACTURE OF SHOES 1O Sheets-Sheet 1 Filed Dec. 10, 1947 Event-077" //RMA 1v ,4. Mil/0f 3) V5 Nov. 29, 1949 H. A. IMHOF MACHINE FOR USE IN MANUFACTURE OF SHOES 10 SheetsSheet 2 Filed Dec. 10. ,1947

Man/9A no! 01/70/- IAv I mes;

Nov. 29, 1949 H. A. IMHOF MACHINE FOR USE IN MANUFACTURE OF SHOES Filed Dec. 10,1947

10 Sheets-Sheet 3 mass Nov. 29; 1949 H. A. IMHQF 2,489,416

MACHINE FOR USE IN MANUFACTURE OF SHOES 10 Sheets-Sheet 4 Filed D60. 10, 1947 H. A. lMHOF MACHINE FOR USE .IN MANUFACTURE OF SHOES Nov. 29, 1949 10 sneaks-sheet 5 Filed Dec. 10. 1947 Nov. 29, 1949 H. A. lMHOF MACHINE FOR USE IN MANUFACTURE OF SHOES 1O Sheets-Sheet 6 Filed Dec. 10. 1947 W la? SE 5 222% HER/w A /M/(OF HA. IMHOF MACHINE FOR USE IN MANUFACTURE OF SHOES l0 Sheets-Sheet 7 Filed Dec. 10; 1947 Q Q 1 eninr ///?M,4A/4 01/10;

Nov. 29, 1949 H. A. .lMHOF v MACHINE FOR USE IN MANUFACTURE OF snons 19 Sheets-Shae! 8 Filed Dec. 10, 1947 mejzizw" 1 /55/ 44 4. /Mf/0/' Wibzess Nov 29, 1949 H. A. IMHOF MACHINE FOR USE IN MANUFACTURE OF SHOES l0 Sheets-Sheet 9 Filed Dec. 10, 1947 1 i I FI FI lllll I A cWMM/AJMHQF Nov. 29, 1949 H. A. IMHOF MACHINE FOR USE IN MANUFACTURE OF SHOES Filed Dec. 10, 1947 10 Sheets-Sheet 10 w 6 M 4 M m H Patented Nov. 29, 1949 MACHINE FOR USE IN MANUFACTURE OF SHOES Herman A. Imhof, Beverly, Mass, assignor to United Shoe Machinery Corporation, Flemington, N. J a corporation of New Jersey Application December 10, 1947, Serial No. 790,880

39 Claims. 1

The present invention relates to machines for use in the manufacture of shoes and is herein illustrated as embodied in an automatic side lasting machine of the type disclosed in United States Letters Patent No. 1,706,619, granted March 26, 1929, No. 1,999, 98, granted April 30, 1935, and No. 2,201,866, granted May 21, 1940, all on applications of Robert H. Lawson.

In the machine of the above noted patents, a shoe supporting jack is provided mounted for movement relatively to the side lasting devices of the machine to enable a shoe on the jack to be presented properly to the lasting devices throughout the length of the shoe. The jack has a shoe supporting cradle pivoted for rocking movement about the lengthwise axis of the shoe thereon so that both sides of a shoe bottom may be operated upon simultaneously, the operating pressures of the devices against the shoe bottom being balanced about the pivot of the cradle. In the prior machine the shoe is applied to the jack and presented to the lasting devices as a necessary manual operation. After the lasting has been completed the shoe is removed from the jack as a second necessary manual operation.

An object of the present invention is to provide a machine for operating upon shoes having a shoe supporting jack in which the number of necessary manual operations is reduced to a minimum and more particularly in which it is unnecessary to remove a shoe manually from the machine, the jack being so constructed as to admit unobstructed downward passage of a shoe released from the jack. With such a machine the operator is relieved of a substantial proportion of the effort required in maintaining continuous production.

A further object of the invention is to provide a machine of the type referred to having devices operating with a pressure applied simultaneously to opposite marginal portions of a shoe in which the pressures of the operating devices on the shoe may more readily be balanced and in which the operation of said devices is rendered more effective than in prior machines as well as more readily regulated for use with shoes having relatively great lengthwise curvatures. Still further objects are to improve the construction and to simplify the mode of operation of a machine of the type referred to in such a way as to enable the machine to be attended by a relatively unskilled operator and, at the same time, to require less attention and exertion on the part of the operator than heretofore.

- rest against which the shoe is clamped by con- One difficulty in the operation of the machine tinued movement of the last pin. At the end of a lasting operation on the shoe the last pin is retracted from the toe rest to release the shoe, the heel end of the last on which the shoe is mounted still being impaled by the last pin. It is then necessary for the operator to remove the shoe manually by lifting it from the last pin. In some instances the removal of the shoe is resisted by binding action between the last pin and a metal sleeve lining the last pin hole as a result of,

canting the shoe on the last pin while lifting the shoe.

To avoid these difliculties, in accordance with an important feature of the invention, the pres-- ent machine has a shoe supporting j-ack provided with heel and toe engaging members in which one of the members is mounted upon a horizontally offset arm to admit unobstructed downward passage of a shoe from a position engaging the heel and toe members. Thus, when the heel and toe engaging members act only at the outer sur-' face of a shoe being operated upon, without the use of a last pin in the jack, the action of gravity alone is sufficient to cause the shoe to be discharged from the machine. As a result, it is necessary only for an operator to apply a new unlasted shoe to the machine after which the next operation will be performed automatically and the completed shoe will be ejected without special attention. Preferably the heel and toe engaging members are carried by a bar in the jack from which they are offset horizontally so that a sufficient space for downward passage of.

the shoe when released from the jack will be provided beneath said members.

To assist in removing the shoe from the machine a chute is arranged on the jack beneath the heel and toe engaging members to receive the shoe after the operation is completed, the chute being directed to a suitable transfer apparatus or to a packing case as convenience may indicate. These and other features of the invention are embodied in a machine having the devices, combinations and arrangements of parts hereinafter described and claimed, the advantages of which will be readily understood from the following description taken in connection with the accome panying drawings, in which,

Fig. 1 is a view in left side elevation of an automatic shoe side lasting machine embodying the features of the present invention;

Fig. 2 is a view in front elevation on an enlarged scale of the upper portion of a jack in the machine illustrated in Fig. 1 with a shoe clamped therein;

Fig. 3 is a similar view of the jack with the shoe removed;

Fig. 4 is an enlarged view in right end elevation of the jack illustrated in Figs. 2 and 3 with a shoe in operating position, parts of the lasting units in the machine being indicated in connec tion with the shoe;

Fg. 5 is a sectional view taken along the line VV of Fig. 4;

Fig. 6 is a view in left end elevation of the jack with a shoe illustrated in clamped position during operation of the machine;

Fig. 7 is a detail plan view of a left and right shoe adjusting collar .as viewed from the line VII-VII of Fig. 6;

Fig. 8 is a side elevation of the collar illustrated in Fig. '7;

Fig. 9 is a view in elevation of the collar of Fig.7;

Fig. 10 is a sectional view of the right and left shoe adjusting mechanism taken alon the line VII-VII of Fig. 6;

Fig. 11 is a view in rear elevation of the upper portion of the jack;

Fig. 12 is a detail sectional view taken along the line XIIXII of Fig. 11;.

Fig. 13 is a plan view of the jack showing a shoe in operating position thereon;

Fig. 14 is a detai1 view of an ofiset arm for supporting the toe rest of the jack;

Fig. 15 is a sectional View taken along the line XVXV of Fig. 13;

Fig. 16 is a detail view on an enlarged scale illustrating a portion of the heel clamp controlling mechanism;

Fig. 17 is a sectional plan view taken along the line XVIIXVII of Fig. 16

Fig. 18 is a sectional View of the same parts taken along the line XVIHXVIII of Fig. 16;

' Fig. 19 is a detail sectional view taken along the line XIX-XIX of Fig. 16;

' Fig. 20 is a vertical sectional view of the same :parts taken along the line XXXX of Fig. 16;

Fig. 21 is a further vertical sectional view taken along the line XXIXX[ of Fig. 16;

' Fig. 22 is a perspective view of a heel clamp retaining pawl of the jack locking mechanism;

' Fig. 23 is a perspective view of a link connecting the heel clamp with its actuating spring;

'Fig. 24 is a sectional view of the heel clamp controlling mechanism taken along the line XXIV-XXIV of Fig. 17 showing the parts with the heel clamp held in retracted position; and

Fig. 25 is a similar view of the same parts shown in positions taken while the heel clamp is engaging and locked against a shoe.

' The machine illustrated in the drawings is an automatic side lasting machine of the type illustrated in the patents referred to, acting automatically and simultaneously upon opposite bottom margins of a shoe. A shoe in condition to be operated upon by the machine comprises an upper 2 (see Fig. 2) mounted on a last 3 having temporarily attached thereto a ribbed insole 6.

To last and secure the marginal portions Of the upper to the bottom margin of the insole 6, the machine has two pairs of lasting grippers 8, best shown in Figs. 1 and 4-,. stapling units 10 and rib 4 guided presser feet or staplin anvils 12, each acting with pressure against the corresponding bottom margin of the shoe. During the operation of the machine on a shoe the gripper and stapling units are moved toward and from each other by the movement of the presser feet along the inner surfaces of the insole ribs as the operation proresses step-by-step from the shank of a shoe toward the toe end, downward and outward pressure of the presser feet on the insole 'within the rib acting to guide the operations of the lasting units.

The machine of the patents above identified is provided with a toe rest and a last pin on which a shoe is secured in position on the jack. The toe rest and last pin are mounted for relative movement on a cradle pivoted to rock about an axis extending lengthwise of the shoe on the jack. To support the cradle mounting, the jack has a frame and a frame supporting structure comprising a horizontally extending link similar to that indicated in the drawings at M, one end of which link is pivotally connected to the frame and the other end of which is pivotally connected to the upper end of an arm Hi. The arm i5, in turn, is pivotaily mounted upon a base to swing about an axis extending transversely to the direction of feed and substantially parallel with the plane of the bottom of a shoe supported on the jack. The axis of the pivots connecting the link M with the jack frame and arm is are also parallel with the axis about which the base swings during feeding movement of the shoe. With this supporting structure proper positioning movements are given t the shoe during lasting operations to .present the shoe properly as it is fed and the mechanism for imparting these movements are similar to those disclosed in the patents.

By reason of the manner in which the shoe is attached to the jack in the machine of the patents, it is necessary to lift the shoe manually heel of a shoe.

from the last pin after being released from engagement with the toe rest. While the mere lifting of the shoe from the last pin ordinarily presents no serious obstacle it does require some eiTort on the part of the operator and occasionally may delay the presentation of a new shoe to the jack unless the removal from the last pin is carefully accomplished, avoiding the possibility of cramping the last pin within the last pin hole of a last. Thus, if an attempt is made to remove the shoe horizontally and the toe end of the shoe is lifted higher than the heel end, the metal ferrule in the last pin hole may bind against the last pin. In this way the removal of the shoe may be retarded, resulting in loss of time and annoyance and requiring particular attention on the part of the operator to complete the removal of the shoe before a new shoe may be substituted.

The jack in the machine embodying the present invention has a toe rest. similar to that of the prior machine but instead of employing a last pin to support the heel end of the shoe, the heel end is clamped in the present machine externally and the heel and toe en aging members of the toe rest and heel clamp are oiiset horizontally from their supporting structure to admit unobstructed downward passage from clamped position of a shoe under natural gravitational. force when released from the jack. The heel clamp is in the form of a bloci; 53 having a reentrant V-shaped recess provided with decreasing-width in a downward direction to surround and prevent downward movement of the The toe rest is formed from a '5 block 20 and is cupped to fit the upper surface of a shoe toe and to extend upwardly above the bottom surface of the shoe when the shoe is presented to the jack in upside-down relation, thus preventing displacement of the shoe under lengthwise clamping action. Accordingly, the toe rest has an upwardly extending surface 22 inclined slightly toward the heel end of the shoe.

The shoe engaging members are mounted and connected together on an inclined bar 24 and the heel clamp is movable along the bar relatively to the toe rest to secure or release the shoe from the jack.

To admit unobstructed downward passage of a shoe under the action of gravity from a position between the shoe engaging members, the members are offset horizontally from the bar '24. For connecting the toe rest to the bar and for supporting the toe rest end of the bar the toe rest block 20 is clamped to an arm 26 made fast to the bar. The arm 26 is ofiset along its length and carries a guideway mounting block 28. The heel clamp is pivoted on an upwardly projecting ofiset arm 38 mounted for rocking movement on a bolt 32 passing through a slot in a block 34 clamped to the heel end of the bar 24.

The toe rest, heel clamp, ofi'set supporting arms 26 and 38, and the bar 24 in the illustrated machine constitute a shoe supporting cradle which is pivoted for rocking movement about the lengthwise axis of a shoe clamped in the jack, the shoe being rocked and subject to linearmovement transversely of its lengthwise axis in a manner similar to that disclosed in the patents above identified. The mounting for the cradle which enables the shoe to be subject to linear movement transversely of its lengthwise axis comprises the guideway block 28 and angularly disposed rolls 36 and 38. The axis of roll 36 extends parallel to the lengthwise axis of the shoe and the axis of roll 38 extends at right angles thereto in a vertical direction. The axis pivots or studs about which the rolls rotate are indicated at 38 and are secured directly to the upper end of an arm 40 constituting the main jack frame, the stud for the roll 36 permitting rocking movement of the cradle with the cradle in any transverse position.

The heel end of the shoe supporting cradle is maintained in position by cantilever action, one fulcrum of which includes the roll 38 at the toe end of the cradle, acting in the guideway block 28 enclosing the rolls 38 and the other fulcrum of which comprises a pair of spaced vertical arcuate guideway plates 42 and 44 secured to flanges projecting upwardly from the jack frame. A pair of rolls 46 and 48 project from the central portion of the cradle in angular relation to each other and engage the plates 42 and 44, having mounting studs 58 and 52 (see Fig. 4) carried by an ofiset arm 54 secured in turn to the cradle bar 24. Ihe arrangement is such that downward pressure at the heel end of a shoe on the jack is translated into horizontal pressures between the rolls 46, 48 and the plate 42 in one direction and the roll 38 and the guideway block 28 in the other direction to form a supporting couple of forces. With this construction the space beneath the heel end of a shoe in the jack is entirely free and unobstructed so that when the shoe is released, even though the toe end should engage the plate supporting flanges of the jack frame, the heel end of the shoe will continue to drop by action of gravity until it is entirely cleared from the toe rest. The location of the plates also is such as to permit free rocking and transverse movements of the cradle in the jack frame. With the shoe thus free to drop there is little obstruction to downward movement of the shoe from the entire jack supporting structure.

To facilitate removal of the shoe by the action of gravity clear of the jack supporting structure, a shoe conducting chute is provided beneath the clamped position of the shoe. A shoe released from the jack is received within the chuteand slides out of the machine clear of the jack. .The chute is in the form of a series of parallel bars 56 having their forward ends bent away from each other and their central portions welded to a pair of arms extending from a block 58 secured to the upper surface of the jack supporting link H. The lower ends of the bars are extended to the left as far as necessary to clear the jack supporting structure and to enable use of a packing case or other shoe receiver into which the chute empties. To brace the upper ends of the bars they are welded to a second pair of arms also projecting from the block 58.

In the embodiment of a further feature of the invention, the heel clamp i8 is so mounted on the inclined bar 24 by the arm 38 and a slide connection that the heel clamp moves proportionately to higher positions along the bar with decreasing sizes of shoes. A shoe is thus maintained in a level position regardless of shoe size, a lower depth of the shoe heel for smallsizes being compensated for by the higher position of the heel clamp. For mounting the ofiset arm 38 the pivot bolt 32 passes through a pair of spaced slide blocks 68 best shown in Figs. 18 and 21, mounted between surfaces of guideways formed between a plate 82 secured to the undersurface of the slot in the block 34 and the horizontal flanges of angular members 63 secured to the lower edge of the slot with vertical flanges extending downwardly into a vertical portion of the slot in the block 34. As the arm 33 rocks about the pivot bolt 32 the pivot bolt moves along the slot carrying the slide blocks 68. The arrangement is such that as the heel clamp moves upwardly in an inclined path to maintain a level position in a clamped shoe regardless of shoe size, it approaches closer to the toe rest.

To insure maintaining a level position of the heel clamp and to cause the pivot bolt 32 to move as the arm 38 is rocked, a downward extension on the outer of two plate portions of the arm is pivotally connected at 84 to a link 65 which in turn swings about a pivot screw 68 on the block 34. The pivot bolt 32 has an enlarged disk-like head screwed to one side of an arm 58 mounted outside the outer plate portion of arm 38. A downward extension of the arm as is pivotally connected at 18 to a link 72 rotatable about a pivot screw 13 on the block 34. The upper end of arm 68 is provided with a roll 74 (see Figs. 2 and 6) engaging a flat surface 16 on the heel clamp below a pivot pin 78 connecting the heel clamp with the arm 30. The arms 38 and 58 are so arranged and the pivots 84 and i8 connecting the respective links 65 and 12 are so located that the centers of the pin 18 and the roll 74 move the same distance toward or from the toe rest as the bolt 32 moves within the slot of the block 34.

To move the heel clamp toward the toe rest in clamping a shoe the slide blocks 58 and pivot bolt 32 are acted upon yieldingly by a spring to draw it toward the toe rest. ,For this purpose the central part of the bolt passes through an angularly ;imd the johp iiig amo of the' shoe enew" fsition' against separation ir'onrftheftoe *fes members 153. The 'detents *onjthe'p pressed y'ieldihglyfagainstthei'ratoliet by's fling" *40""balancedthanwould be if the rocking axis were pressed plunger's' Hi4 mountedir'iopenin nection andfthe link 82""tow I v I Tin F1924. Leftward movement of e the bolt 32 bringing theundersiirfa portion in the link against laterally projectin ilug's'on thepawls H32. "Continuedleftward'fnovefurther'leftwja'rd movementfor v w "away from the toe rest to its extreme spaced 1" position from the toe" rest anaem a the" s "f bd'ii k -81: ee .5- 1811,23 n wflzfisforiiied with a fiat upperQsur'faoe which, uringtheimovement of the bolt 32; towardtiie "toe rest, engages the 'un'dersurfa'ce of the plate 'flahd'slides'along this plate (Figp'25) The link )2 also is iorrned with spaced downwardly 'exj'tending portions" throughj whichip'a'ss""a"pin s 3 connectin a spring actuatedlinlfflfi interposed between :the spaced portions ofi the "'nk. The

link, in turn, is pivotally'conneete t m rod 9n slidingljjniounteid w hlrl'th ariid fl'lhe rod 90 is oonnected'to the' centralfniembersfpf f a Bot/den wire, the sheathTofwliich indicated fatal: (see Figs, 3 and 11) Rome endjbf hesheath ,jQis clamped to the upper' e q or t e r "124 and the other end is' c amped 'toa re f" within the jack frame lil Withidthei 40' the central member 9?"io"the:Bow en wire connected to aspring "pressedplunge eassess 34; pysc'rewstsandis. The latch l06is actuated "'yielding'ly toward'a raised position bya' coil "spring 1 i2 'str'etch e'd between" a pin on the latch and a pinon'the' block' 108.

fAfter presenting a shoe to the jack the link 82 isreleased from the latch I06 and the heel iclamp is moved into" engagement with the shoe. To release the link 82 the latch has a central "'cutfand carries a transverse pin Ht against ta-v'fitna lw'wmch the inner end of an actuating lever- H6 acts'within the central cut. The lever il6' is "fulcrumed on a pin H8 and is provided with a handle I28 clamped to a block I22 in turn secured to theouter arm of the lever.

li'riegd'fbar w Dueto the'construction of the cradle with the f't'oe restand heel clamp in oifset relationship to the bar 25 on which they are mounted, the weight of the bar tends torock the cradle to one side. "To balance the weight of the bar and cradle ing coiled about it thespring}indma'ted"at 8,* mountingarms; the cradle is acted upon by-a members rendered orefresp'onsive to "the eon: trols thanrin' the patentedmachine,

To look the heel clamp' in ashoeclarripin nbolt 32 is surrounded at either the link .by' similar but oppositely shaped paths "i132 {see spring 124 (see Figs. 4, 6 and 11), one end-of which surrounds a pin I26 carried by the'upffw'ardly extending arm of a cradle shifting lever 128. The other end of the spring is hooked about a pin-i38- projecting from the toe rest supporting arm 26. This spring not only resists rocking movement "of thecradle out of balanced "position but also aids in centering the cradle'on "the jack frame in a direction transverse to the axis of rocking movement.

The machine of the patents above identified 'lisprovidedwith mechanism including a cam shaft mounted on the jack frame for changing the position of the shoe supporting cradle trans- Fig. 22) havingdownwardly'direotediietentserrve ly of' its rocking axis during the lasting ding gaging spaced ratohets formedhyfupst teeth along theap'exfof the angle fbet'tv' n the pawls I02 in proper positionstoileh' agij' ii along the undersurfacejof' the'p tewzfdurihg J movem'ent of the slide blocks 66' towardand item the rest' U, v

Atthe end, of a lastihgoperationhrr a" shoe the heel clamp" unlocked noveda ay' from the toe "restftofrelease ashoe by i n generally similar" to that e moving the rod 95 through i :first causes the Home swingtio ed" ment of the deo press s the 'liigs'hi'i the 11s downwardly and raises' the detnts" 'ifom; in :ratchets, thus'mnlockingtheheel eliinp. Still oper'ation'toaccommodate shoes of varying-degreeso'f lengthwise curvature. By so doing; the upivard pressure of the shoe against the presser feet H of the lasting units is more equally maintained in fixed relation to the shoe. For operating on right a'ndleft' shoes it is necessary to reverse the positioning movement of the cradle in the jack frame and for'this purpose connecstions "for rotating the position changing cam on f'the shaft are disconnected and reconnected to bring arever'seportion of the cam into operation. In some instances shoes are encountered having extremely large lengthwise curvature with j'which' it is necessary in 'the patented machine f lJO substitute a different cam for the one in the jack frame inorder to increase the range'of eradle movement transversely of its rocking axis sufficiently to maintain the pressures on the j'presser feet balanced throughout the length of "the" shoe. In the illustrated machine necessity "of" changing cams in the jack frame to accom- "modateshoes of widely varying lengthwise curvais avoided and'suitablern'anual adjustments eo"'are provided in "the cam "actuated connections *r r'iaccompushin the same purpose. 'To accommodate shoes of widely varying lengthwise curvature in the machine of' the present invention, the lever I28 is connected with "the'cradle' through a link I32 surrounding the "pm 426 at'one'end and a pin I34 (see Fig. 13) carried by th'e'offset'arm 28 in approximate aline- 'rn'ent'with the axis of the roll 36 and the lever is connected through connections adjustableboth "for'changing the range of transverse movement 'f'impar'ted to'the cradle as well as for shifting the limits of transversemovement of the cradle without changing its range of movement; Thus, if ashoe is encountered having a relatively large 'zstmnsverse curvature a greater range of "transverse movement must be imparted to the cradle but Since most of the movement necessary between the shoe and the mounting of the cradle in the jack frame is at one side of the point at which a lasting operation is started, it is necessary, in addition, to shift the limits of transverse movement of the cradle in the jack frame more or less to one side of a central position. The limits of the transverse movement also must be reset without changing the range of movement when the cradle positioning movement is reversed for operation on a left shoe after operating upon a right shoe and vice versa, since the direction of curvature in a left shoe is opposite to that in a right shoe.

To change the range of transverse movement imparted to the cradle in the jack frame, the lever I28 is fulcrumed on a rock shaft I36 (see Figs. 4, 11 and 13) mounted in bearings projecting from the rearward side of the jack frame. The lower arm of the lever I28 is grooved (Fig. and has slidingly mounted therein a block I31 perforated to receive the rearward end of a bolt I38 adjustably clamped within a slot in an arm I40 clamped to one end of a rockshaft I42 rotatable in an elongated bearing sleeve formed on a fulcrum supporting member or arm I44. The arm I44 is rotatable loosely on a shaft I46 and has a downwardly extending portion, the lower end of which has clamped to it two pairs of perforated plates I48. The perforations in the plates I48 are of conical shape, best shown in Fig. 10, and are disposed to form receivers for balls I 50 spaced to engage the flange of either of a pair of cradle movement limit resetting collars I52 adjustably mounted on a manually actuated rotatable threaded shaft I54. The balls I50 thus act as a follower engaging the peripheries of the collars I 52.

During operation of the machine on a shoe, movements are imparted to the cradle moving lever I28 through the clamp bolt I38 to the arm I40 and shaft I42. At the opposite end'of the shaft I42 is pinned a gear segment I56 meshing with a similar segment of slightly larger radius I58 pinned to the shaft I46 forming a part of a bell crank identified by the same reference character. A downwardly extending arm of the bell crank I58 carries a cam roll I60 engaging a slot in a cradle moving cam I62 secured to a hollow shaft I64 rotatably mounted in the jack frame 46. The hollow cam shaft I64 is given a part of a complete rotation less than 180 during each operation of a shoe by mechanism to be more fully described hereinafter. For a right shoe one part of the cam is effective to move the roll I66 and for a left shoe an opposite part 7 of the cam is effective. The shape of the cam along the parts rendered effective for right and left shoes is such as to reverse the transverse cradle positioning movement.

In order to reverse the cradle movement, the cam I62 is manually disconnected from the cam shaft I64 and is rotated 180 with relation to it. For this purpose the hollow shaft I64 has clamped to its end, opposite the cam, a cradle transverse movement reversing arm I66 provided with a spring pressed locking plunger I68 arranged to enter either of two holes located at diametrically opposite points in a disk I16 secured to the hub of a pulley I72 through which the hollow shaft I64 passes. The plunger has a knurled handle to retract it from the holes in the disk tracted from the disk the cam is' disconnected I10. When the plunger is re- To release the shoe from the jack from the shaft and when the arm I66 is rotated relatively to the disk I10 the cam I62 is rotated relatively to the pulley I12, whereupon it is reconnected in reversed position. 6

' The pair of limit resetting collars I52 are connected for rotation with the cam I62 through a pair of pins I14 projecting at right angles to the plane of the respective collars into loose fitting the cradle shifting cam I62 one collar or the,

other will engage the balls I 50 in different relations. The rims of the collars are beveled at their ends and extend into close proximity to each other through an arc of approximately so that no difficulty will be encountered in rotating the collars past the balls I50. To shift the limits of transverse cradle move ment without changing the total range and in.

addition to being reversed by rotation of the arm I66, the threaded shaft I54 is rotatable concen-' trlcally within the hollow shaft I64 and has secured to its forward end a knurled adjusting wheel I15. rotated to reset the limits of transverse cradle movement between operations on left and right shoes the threaded shaft moves with it so that no displacement occurs between the collars I52, the collars rotating with the cam I62 and hollow shaft. When the adjusting wheel is rotated the collars will shift the follower balls I50 and the fulcrum arm I44. Shift of the fulcrum arm will.

move the cradle in the jack frame to different starting positions.

When the collars have their rims displaced,

the limits of movement of the cradle shifting lever will be reset in reversing the transverse movements of the cradle for a right or a left shoe. This is accomplished by a movement of the fulcrum arm I44 for a lever comprising arm. I40, rockshaft I42 and segment I56, causing the segment I56 to be turned about the segment portion of lever I58. The fulcrum lever I44 is then retained in position, the rim in each disk being the same shape throughout a cycle.

When a change is made in the range of transverse movement of the cradle relatively to its lengthwise rocking axis, the clamp bolt I38 is loosened and is moved along the slot in the lever I40 to change the effective lengths of the arm I40 and the lower arm of the cradle shifting lever I28. To provide a convenient reference point for the position of the adjusting bolt the bolt carries a rectangular washer I16 having an indicating pointer cooperating with a series of scale marks I18 on the arm I40.

The hollow cam shaft I64 is rotated in a manner similar to that of the cam shaft in Patent pleted, the cam shaft is rotated in a reverse direction, returning it to its initial position. During the reverse rotation of the cam shaft the shoe is released from the jack and set for a new operation.

When the hollow cam shaft I64 is,

the parts reautomati V:

cally, the hollowshaft L54 aetuates the plunger- 9 againstthe action of itsspnngtfi. To this" ctr thehub'pfthep'ulley 'lfl'i isprovided with" aseriesofgear teeth llli '(sg'eeFig. 3) which mesh with the teetho'n' a segment I80 rotatable about ap'in L8; in the jack frame 48. The segment 13p has pivot-ally connected with it a link' 183 d' atits upper'end with a pin I84 engage il'ig thelower end of the spring pressed plunger llhjelqawer end of the plunger has a shoulder nd downw dl e tendin fin er porti n. Wh n"thelinlg lg3"'is"lowere,d the pin I34eni' e tlis s qu e n the plun e d p n up we" mo ement of the linktheplunger is raised,

is" unlocked and moved away from t in amanher'already outlined; After la chips the heel "clampin its position separated fiQ' the toe rest the pin [84 rides against the beveled upper end of an adjustable plate 186', clampedto the l tch" frame to disengage th'ep'in thereon from the'shoulderon the plunger, thus rele ng the plunger for yielding operation} of thFhEeTcIampvvhjen the heel clamp is again r leased:

re ease? $110 fr the k manually tllb lt Wa tin or a tom t c releasing m t attheend of a lasting operation the jack hasprojecting from it a hand lever l8! s ion, a, i I 8. a d. rra ed with. i 0st and heneath the lower end of the 'QQL lgownward' movement of the proj' 5 arm oif'the'le'ver' l8? acts to raise the W red fin plun in e same an- 'e f 'sii f the wtfima q r lea i action. The n al ie sa insl erj sqno mal y h ld in oper tivefp'osition by a spring I351 coiled about. ie tr r th ev In. an act n Q the e atfqne; end an'd qn thejacl; frame at its other" end The nature and scope of the invention having} en ndi a ed a d. a s ec fic e bodi ent havin een. r bed; hat s c a m i .'i I m tbi e tor oper ti g upon tnebo mf a; o s oe ho Sup rt k, h e a in tQfe' nsas ng memb o. s c the! shjqeiigfthe jack, in combination with a horie it ly-efis arm Q11 wh ch n f d:

bers" is'niQunftedjt' admit unobstructed downward Des seqt a shoe. under. the ac i n, of ravit fi i s t on e wee t e-en in mem e s r' iim c ine oxormtins ponthe b m g inefi Shoes, a; h u po ti ia k. hav n e 1; nd to n ag ng mem tqs c r e heji qki nf mb nati n ith a bar'i o h h; as m mb rs r of t; h ri o ta l t jadmi unobstructed dpwnward, passage of a shoe h action f! s te iy' he r l s d. fr m? machine for operating upon the bottom" Y J i li e p or u ck hav er r en ng. memb s to se ure he. shoe iri'the jackfinf combination with a bar on whiphpne of said membersjis movable relatively to t therto clamp a d. release a shoe on'i'the jack: and from which said members, are offset. ho 'ntally to'admitunobstructed passage of a sh: under'theaction of" gravity at one side of r he e eased m he Ja kln 'ani'achine 'for'operating uponthejbottom A. f sh es; a k a n a heel clamp t e t. u omb a u th bar c a hei iss g lamp. and toe s and r 1 I jbar'carryin'gthe' heel clamp andtoe'r'est, inhorizontally offset relation'tc the bar toadtfln bs ructed dow a s ge of, a. sh e" shoe' in thejack; in combination with a horizontally offset arm on Which-one of said membersis mounted to admitunobstructed downward passage of a shoe under the action 0f gravity from a position between the engaging members and a chutearranged beneath the shoe- 0n the heel) and toe. engaging members to receive the shoe when released I from the jack.-

6} Ina machine for operating'upon the bottom margins of shoes, a jack frame, a cradle and aheel clamp andatoerest on-thecradle, in combination with mounting means for one end and: the. central portions of the cradle on the: jackframe arranged to support the other end of the" cradle 1 by cantilever action while guiding the cradleto enable relative rocking movement on" thajachframe of a shoe onthe cradle about-- the lengthwise axisof the shoeas the operation on, the shoe bottom progresses.

7L ,In a machine for operating upon the bottom margins of sl'1oes,a-jackframe, a cradle anda heel clamp engaginga-shoeexternally and a toe-rest-on the cradle, in combination with- Inounting means including a pivot in the jack" frame on which the cradle-rocks about the length wise axis; of a shoe thereon, and guiding means alongone endof the craclle and'guideway plates on the frame along the central portion of thecradle. for preventing downward movement of the other end of'the cradleduring rocking movement of'the cradle.

8.1 Ina-machine foroperatingupon the bottom margins. oi shoes, av jackframe, a shoe supporting cradle and'a heel clamp and a-toe rest onthe cradle, in combination with mounting means on the-jack frame. for the toe end: of the cradle and guideway plates on theframe'alongthe central portion of the. cradle arranged to support the heel erid'bf the cradle by cantilever action while guidinglthe cradle tor enable-relative; rockingmove-'- m'ent on the jack frame -of theshoe about its lengthwise axis and linear movement transversely to the'lengthwise axis of the shoev asthe operation: onthe shoe progresses.

91,. Ina machine for operating upon thebot-- tom marg-ins of; shoes,- a-jack frame; ashoe supporting cradleanda. heel clamp-and a toe rest on the cradle, in combination with mounting meansronathe jack framefor the cradle, includinga pivot on, the jack frame: onewhiclr the cradle- :cradle, enclosing the rollsarranged to-- enablemovement of" the cradle transverselyof the lengthwise axisof' the shoe thereon.

1-01 In=a machine'for operating uponthebottom margins-of shoes; 2; jackframe, ar-shoesupporting? cradle. and-a heel clamp-and a toe reston-- the. cradle, in: combination; with mounting" meanson, the jack framefor the-cradle, includ-- inga pivot on the jackframe onwhichthe cradle rocksabouttthelengthwise axis of a shoe thereon, asec'ond pivot on the jack frame at right angles: to.-the lengthwise-axisof the shoe,.r0lls on saidpivots guideways at the toerestendoi the cradle for therjolls arrangedlto enable movement of the cradle transversely oflthelengthwise axis of the shoe;- thereon: and an additionaliguideway and.

13 roll mounting at the central portion of said cradle arranged to support the heel end of the cradle by cantilever action.

11. In a machine for operating upon the bottom margins of shoes, a jack frame, a shoe supporting cradle and a heel clamp and a toe rest on the cradle, in combination with mounting means on the jack frame for the cradle, including a pivot on the jack frame on which the cradle rocks about the lengthwise axis of a shoe thereon, a second pivot on the jack frame at right angles to the lengthwise axis of the shoe, rolls on said pivots, guideways at the toe rest end of the cradle for the rolls arranged to enable movement of the cradle transversely of the lengthwise axis of the shoe thereon, spaced plates and rolls disposed therebetween with their axes in angular relation to each other connecting the central portion of the cradle and jack frame to support the heel end of the cradle by cantilever action while permitting rocking movement of the cradle about the lengthwise axis of the shoe on the jack and linear movement of the cradle on the jack frame transversely of the lengthwise axis of the shoe.

12. In a machine for operating upon the bottom margins of shoes, a jack frame, a shoe supporting cradle and a heel clamp and a toe rest on the cradle, in combination with mounting means on the jack frame for the cradle, including a pivot on the jack frame on which the cradle rocks about the lengthwise axis of a shoe thereon, a second pivot on the jack frame at right angles to the lengthwise axis of the shoe, rolls on said pivots, guideways at the toe rest end of the cradle for the rolls arranged to enable movement of the cradle transversely of the lengthwise axis of the shoe thereon, spaced plates and rolls disposed therebetween with their axes in angular relation to each other connecting the central portion of the cradle and jack frame to support the heel end of the cradle by cantilever action while, permitting rocking movement of the cradle about the lengthwise axis of the shoe on the jack and linear movement of the cradle on the jack frame transversely of the lengthwise axis of the shoe, said heel clamp and toe rest being mounted on oifset arms on the cradle to admit unobstructed downward passage of the heel end of a shoe under the action of gravity from clamped position in the cradle.

13. In a machine for operating upon the bottom margins of shoes, a jack frame, a shoe supporting cradle and a heel clamp and a toe rest on the cradle, in combination with mounting means for the cradle on the jack frame including a pivot on the jack frame on which the cradle rocks about the lengthwise axis of a shoe thereon, a second pivot on the frame at right angles to the lengthwise axis of the shoe, rolls on said pivots, guideways at the toe rest end of the cradle for said rolls arranged to enable movement of the cradle transversely to the axis of the shoe, spaced guideway plates and rolls between said plates disposed with their axes in angular relation to each other connecting the central portion of the cradle and jack frame to support the heel end of the cradle by cantilever action while permitting rocking movement about the lengthwise axis of a shoe on the cradle and linear movement of the cradle transversely to the lengthwise axis of the shoe, said heel clamp and toe rest being mounted on offset arms on the cradle to admit unobstructed downward passage of the heel end of a shoe under the action of gravity from clamped position in the l4 cradle, and a chute onthe jack frame beneath the cradle to receive a shoe released therefrom. 14. In a machine for operating upon the bottom margins of shoes, a shoe supporting cradle comprising an inclined bar, a toe rest and a heel clamp on the bar, in combination with an arm connection on the bar for the heel clamp to cause the heel clamp to move proportionately to higher positions on the bar with decreasing sizes of shoes.

15. In a machine for operating upon the bottom margins of shoes, a shoe supporting cradle comprising an inclined bar, a toe rest and a heel clamp on the bar, in combination with an arm to which the heel clamp is pivoted, a slide block on which the armis mounted, a guideway on the bar for the slide block and a link connected between the arm and the bar to cause the heel clamp to move in an upwardly inclined path to higher positions on the bar as the heel clamp moves toward the toe rest.

16. In a machine for operating upon the bottom margins of shoes, a shoe supporting cradle comprising an inclined bar, a toe rest and a heel clamp on the bar, in combination with an arm to which the heel clamp is pivoted, a slide block on which the arm is mounted, a guideway on the bar for the slide block, a link connected between the arm and the bar to cause theheel clamp to move in an upwardly inclined path to higher positions on the bar as the heel clamp moves toward the toe rest, and a second arm fulcrumed on the block having a bearing on the heel clamp and a second link connected to the second arm to cause the heel clamp to maintain a level position as it moves toward and from the toe rest.

17. In a machine for operating upon the bottom margins of shoes, a shoe supporting cradle comprising an inclined bar, a toe rest and a heel clamp on the bar, in combination with an arm to which the heel clamp is pivoted, a slide block on which the arm is mounted, a guideway on the bar for the slide block, a link connected between the arm and the bar to cause the heel clamp to move in an upwardly inclined path to higher positions on the bar as the heel clamp moves toward the toe rest, and means for locking the slide block to prevent displacement of the shoe when the heel clamp is moved into clamping engagement with a shoe.

18. In a machine for operating upon the bottom margins of shoes, a shoe supporting cradle comprising an inclined bar, a toe rest and a heel clamp on the bar, in combination with an arm to which the heel clamp is pivoted, a slide block on which the arm is mounted, a guideway on the bar for the slide block, a link connected between the arm and the bar to cause the heel clamp to move in an upwardly inclined path to higher positions on the bar as the heel clamp moves toward the toe rest, a spring operatively connected to the slide block to move the heel post toward the toe rest into clamping engagement with a shoe, and a ratchet and pawl for locking the heel clamp against separation from the toe rest.

19. In a machine for operating upon the bot tom margins of shoes, a shoe supporting cradle comprising an inclined bar, a toe rest and a heel clamp on the bar, in combination with an arm to which the heel clamp is pivoted, a slide block on which the arm is mounted, a guideway on the bar for the slide block, a link connected between the arm and the bar to cause the heel clamp to move in an upwardly inclined path to higher positions on the bar .as the heel clamp moves toward the grea es toe rest, a springoperatively connected to the slide'block to move" the heel post toward the'toe rest into clamping: engagement: with a shoe, a ratchet and pawl for locking the" heel clamp against separation from. the. toe rest, and a latch acting to retain the heel clamp in a position spaced from the'toe rest:

20. In a machine for. operating upon the bottom margins of shoes, a shoe supporting cradle comprising an'inclined bar, a toe rest and a heel clamp on the bar; in combination with an arm to" which'the heel clamp is pivoted, a slide block on which the arm isni'ounted, a guideway on the bar for the slide block, a link connected'betweenthearm and the bar to cause the heel clamp to move in an upwardly inclined path to higher positions on the bar as the heel clamp moves'toward the toe rest, a spring for moving the heel post toward the toe rest, an angularly disposed link through which the spring'acts, a ratchet, and a spring presse'd pawl rotatable on the pivot for the heel clamp supporting arm and provided with a lug engaged by the spring connected link to move the pawl out of engagement with the ratchet" when the spring" is rendered inoperative.

21'. In a machine" for operating upon the bot tommargins'ofshoesla shoe supporting cradle comprising an'incline'dbar, a toe rest and a heel clamp on the' bar, in combination with an arm to which'the heel clamp is pivoted, a slide block on which the arm is mounted; a' guideway on the bar for the slide block; alink'connected between the arm and theba'r to'cause the heel clamp to move in an upwardly inclined'path to higher positions on the bar as the heel clamp moves to- 3 ward the toe rest, a'spring for moving the heel post toward the toe rest, an an'gularly disposed link'through which thespring' acts, a ratchet, a" spring-pressed pawl rotatable on" the pivot for the heel clamp supporting arm and provided with a lug engaged by the spring connected link to move the pawl out of engagementwith the ratchet when the spring is rendered inoperative, and a latch acting on thespring connected link to retain the'heel post in a" position spaced from the toerestan'd to hold the pawloutofengagement with the ratchet;

22. In a machine for operating upon the bottom margins of shoes, a shoe supporting cradle" comprising an inclined Hana-toe rest and aheel clamp on the bar, in combination with an'arm. to whichthe heel clamp is pivoted, a slide'b'lock on which'the arm is mounted, a guideway on the bar for theslide block, a link connected between the arm" and' the bar tocause the'heelclamp to move in an upwardly inclined path to higher positions on the bar as theheel clamp moves toward the toe rest; a spring for moving the heel' post toward the toe rest, an angularly disposed link through which the spring acts, aratchet; a spring-pressed pawl rotatable on the pivot for the heel clamp supporting'arm and provided with a lug engaged by the spring connected link to move the pawl outo'f engagementwith the ratchet when the spring is rendered inoperative and mechanism acting on" the spring connected link to'disengage the pawl from the ratchet and to move the he'el'postaway from the toe rest.

23. machine' for operating upon the bot-j tom margins of shoes; a jack having a frame; a shoe supporting cradle pivoted'in the frame'comfpri'singa bar, a toe rest on the bar and a heel clamp movable on the bar toward and from the toe rest, in combination with mechanism for; moving the "heel clamp toward; andfrom'the' toe rest'including 'ai spring-pressed plunger in the clamp movable on the bar toward and from the toe rest, in combination with mechanism for" moving the heel clamp toward and from the toe rest including a spring-pressed plunger in the jack frame and a" Bowden wire connection between the'cradleand the jack frame and a rota'table shaft in the frame for actuating the "plunger against the action of its spring.

25. In a machine for operating upon the bottom margins of shoes, a jack having a frame, a shoe supporting cradle pivoted in the frame comprising a bar, a; toe rest on the bar and a heel clamp movable on the bar toward and from the toe rest, in combination with mechanism for moving the heel clamp toward and from the toe rest including a spring-pressed plunger in the jack frame and a Bowden wireconnection beshaft in the frame for actuating the plunger against the action of its spring, and means for disengaging the connection between the rotatable shaft and plunger after the plunger has been moved against the force of its spring. Y

26. In a machine for operating upon the bottom margins of shoes, a jack having a frame, a shoe supporting cradle pivoted in the frame comprising a bar, a toe rest on the bar and a heel clamp movable on the bar toward and from the toe rest, in combination with mechanism for moving the heel clamp toward and from the toe rest includinga spring-pressed plunger in the jackfram'e' and a Bowden wire connection between the cradle and the jack frame, a rotatable shaft for actuating the plunger against the action of its spring, means for disengaging the connection between the rotatable shaft and plunger force of it's spring, and manually actuated means in addition to the rotatable shaft for moving the plunger against the action of its spring.

27; In a machine for operating upon the botatom margins of shoes, a shoe supporting jack having a frame, heel and toe engaging members for clamping the shoe in position on the jack, and a cradle in which the heel and toe engaging members are mounted, pivoted to the jack frame :.for rocking movement about the lengthwise axis of a clamped shoe, in combination with arms on which said .heel and toe members are oiset horizontally on the cradle to admit unobstructed downward passage of a shoe under the action of eiigravity when released from clamping engagement by said members, and mechanism in the jack. frame for moving the heel engaging member relatively to the toe engaging member including a Bowden wire connection between the "*-cradle and the jack frame.

7 0 clamp movable relatively to the toe rest to clamp 28. In a machine for operating upon the bottom margins of shoes, a jack frame, a shoe supporting cradle mounted for rocking movement in the jack frame comprising a toe rest and a heel a handle lever pivo'tedon the 'cradle for releasing tween the cradle and the jack frame, a rotatable after the plunger has been moved against the.

ZA QA 17 the latch to cause a shoe to be secured on the cradle.

29. In amachine for operating upon 'the bottom margins of "shoes, a jack frame, a shoe supporting cradle comprising heeland toe engaging members and a 'bar along which said members are mounted'for relative movement to clamp and release a shoe from'the jack, in combination with a rockin and lineallymovable mounting for the cradle onthe jack frame including angularly disposed -rolls gonthe frame, .an offset arm at one end of the bar on which one of the rolls is mounted substantially in "line with the lengthwise axis of'a shoe on the cradle and on which another of said rolls is mounted at right angles to said lengthwise axis, a .second offset arm displaced from the first offset armalong the bar, and a roll and plate connection between the second arm and the jack frame in which others of said rolls are disposed in angular relation to each other and. at right angles to the lengthwise axis of the shoe.

"30. In a machine for operating upon the bottom margins of shoes, a jack frame, a cradle having a heel clamp and a toe rest mounted for rocking movement in'the jack frame about the lengthwise axis of a shoe secured therein, a bar connecting the heel clamp and toe rest and onset arms on the bar carrying the heel clamp and toe rest to admit unobstructed downward passage of a shoe under the action of gravity from clamped position between the heel clamp and toe rest, in combination with yielding means between thecradle and the jack frame for balancingthe weight of thebar and offset arms about the axis of rocking movement of the cradle in the jack frame.

31. In a machine'for operating upon the bottom margins of shoes, a jack frame, a shoe supporting cradle comprising heel and toe engaging members and a .bar along which said members are mounted forrelative movement to clamp and release ,a shoe from-the jack, in combination with a rocking and lineallymovable mounting for the cradle on the jack frame including angularly disposed rolls on the frame, an offset arm at one end of the bar on which one of the rolls is mounted substantially in line with the lengthwise axis of a shoe on the cradle and on which another of said rolls .is mounted at :right angles to said lengthwise axis, :a second offset arm displaced from the first offset arm along the bar, and a roll and plate connectionbetweenthe second arm and the jack frame in which others of said rolls are disposed in angular relation to each other and at right angles to the lengthwise axis of the shoe, and a spring between the cradle and the jack frame for balancing the weight of the bar and offset arms about the mounting rolls.

32. In a machine for operating upon shoes, devices acting with a pressure against opposite bottom margins of a shoe, a jack frame, a shoe supporting cradle, a rocking mounting for the cradle in the jack frame in which the cradle is movable relatively to the jack frame transversely of the axis about which the cradle rocks to balance the pressures of the operating devices about the rocking axis of the cradle, and a cam actuated during operation of the operating devices for changing the position of the cradle transversely to its rocking axis, in combination with a lever connection adjustable to change the range of the transverse movement of the cradle relatively to its rocking axis in the jack frame.

18 33. In a machine for operating upon shoes, devices acting with a pressure against opposite bottom margins of a shoe, a jack frame, a shoe supporting cradle, a rocking mounting for the cradle in the jack frame in which the cradle is movable relatively to the jack frame transversely of the axis about which the cradle rocks to balance-thepressures of the operating devices about the rocking axis of the cradle, and a cam actuated during operation of the operating devices for changing the position of the cradle transversely to its rocking axis, in combination with means for shifting the limits of the transverse movement of the cradle relatively to its rocking axis to enable the pressures of the operating devices to be balanced for right or left shoes.

134L111 a machine for operating upon shoes, devices acting with a pressure against opposite bottom margins of ashoe, a jack frame, a shoe supporting cradle, a rocking mounting for the cradle in the jack frame in which the cradle is movable relatively to the jack frame transversely of the axis about which the cradle rocks to balance the pressures of'the operating devices about the rocking axis of the cradle, a cam actuated during operation of the operating devices for changing the position of the cradle transversely to its rocking axis, means for rotating the cam a part of a complete rotation during each operation of the operating devices, and means for changing that part of a complete rotation through which the cam is rotated to reverse the transverse movement of the cradle in the jack frame for right and left shoes, in combination with adjustable connections actuated by the position changing cam for resetting the limits of the transverse movement of the cradle when the movement reversing means is actuated for right or left shoes.

35. In a machine for operating upon shoes, devices acting with a pressure against opposite cttom margins of a shoe, ajacl; frame, a shoe supporting cradle, a rocking mounting for the cradle in the jack frame in which the cradle is movable relatively to the jack frame transversely of the axis about which'the cradle rocks to-balance'the pressures of the operating devices about the rocking axis of the cradle, a cam actuated during operation of the operating devices for changing the position of the cradle transversely-to its rocking axis, means for rotating the cam apart of a complete rotation during each operation of the operating devices, and means for changing that part of a complete rotation through which the cam is rotated to reverse the transverse movement of the cradle in the jack frame for right and left shoes, in combination with adjustable connections actuated by the position changing cam for resetting the limits of the transverse movement of the cradle when the movement reversing means is actuated for right or left shoes comprising a split collar connected with the position changing cam, separable parts of said split collar being independently adjustable, and manual means for relatively changing the positions of the split collar parts to shift the limits of transverse cradle movement.

36. In a machine for operating upon shoes, devices acting with a pressure against opposite bottom margins of a shoe, a jack frame, a shoe supporting cradle, a rocking mounting for the cradle in the jack frame in which the cradle is movable relatively to the jack frame transversely of the axis about which the cradle rocks to balance the pressures of the operating devices about the rocking axis of the cradle, a cam actuated during operation of the operating devices for changing the position of the cradle transversely to its rocking axis, means for rotating the cam a part of a complete rotation during each operation of the operating devices, and means for changing that part of a complete rotation through which the cam is rotated to reverse the transverse movement of the cradle in the jack frame for right and left shoes, in combination with adjustable connections actuated by the position changing cam for resetting the limits of the transverse movement of the cradle when the movement reversing means is actuated for right or left shoes comprising a split collar connected with the position changing cam, separable parts of said split collar being independently adjustable, manual means for relatively changing the positions of the split collar parts to shift the limits of transverse cradle movement, levers for moving the cradle on the jack frame, a follower engaging the split collar, and a fulcrum supporting member actuated by said follower on which is mounted one of said levers to cause the limits of transverse cradle movement to be reset when the right or left shoe cam rotation changing means is actuated.

37. In a machine for operating upon shoes, devices acting with a pressure against opposite bottom margins of a shoe, 2. jack frame, a shoe supporting cradle, a rocking mounting for the cradle in the jack frame in which the cradle is movable relatively to the jack frame transversely of the axis about which the cradle rocks to balance the pressures of the operating devices about the rocking axis of the cradle, a cam actuated during operation of the operating devices for changing the position of the cradle transversely to its rocking axis, means for rotating the cam a part of a complete rotation during each operation of the operating devices, and means for changing that part of a complete rotation through which the cam is rotated to reverse the transverse movement of the cradle in the jack frame for right and left shoes, in combination with adjustable connections actuated by the position changing cam for resetting the limits of the transverse movement of the cradle when the movement reversing means is actuated for right or left shoes comprising a split collar connected. for rotation with the cradle position changing cam, and a manually rotatable shaft having right and left-hand threaded portions 20 for moving the parts of the split cam simultaneously in opposite directions to shift the limits of transverse cradle movement without changing the range of such movement.

38. In a machine for operating upon shoes, operating devices acting to press simultaneously upon opposite bottom marginal portions of a shoe, a jack frame, a shoe supporting cradle pivoted in the frame to enable rocking movement of the shoe about its lengthwise axis and arranged for movement transverse to the pivot axis to enable the pressures of the operating devices to be balanced, a cam for changing the position of the cradle transversely of its rocking axis as the operation progresses, means for rotating the cam a part of a complete rotation during each operation on a shoe, a shaft on which the cam is mounted and a handle on the shaft arranged to disconnect the cam and change the part of the cam rotation for right or left shoes, in combination with a manually rotatable member concentric with the shaft for shifting the limits of transverse movement imparted to the cradle by the cam.

39. In a machine for operating upon shoes, operating devices acting to press simultaneously upon opposite bottom marginal portions of a shoe, a jack frame, a shoe supporting cradle pivoted in the frame to enable rocking movement of the shoe about its lengthwise axis and arranged for movement transverse to the pivot axis to enable the pressures of the operating devices to be balanced, a cam, connections actuated by the cam to change the position of the cradle transversely of its rocking axis as the operation progresses, means for rotating the cam a part of a complete rotation during each operation on a shoe, a hollow shaft on which the cam is mounted, and a connection on the shaft arranged to disconnect the cam and rotate the cam relatively to the shaft for right or left shoes, in combination with a manually rotatable shaft within the hollow cam shaft having right and left-hand threaded portions, a pair of collars connected to the first-mentioned cam and arranged with one collar on each threaded portion of the manually rotatable shaft and connections between the collars and the cam to reset the limits of transverse cradle movement on the jack frame when the cam is rotated relatively to the shaft.

HERMAN A. IMHOF.

No references cited.

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