US2104183A

US2104183A - Machine for operating upon shoeheels

Info

Publication number: US2104183A
Application number: US727509A
Authority: US
Inventors: Charles G Brostrom
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1934-05-25
Filing date: 1934-05-25
Publication date: 1938-01-04
Anticipated expiration: 1955-01-04

Description

Jan. 4, 1938. c BROSTRQM 2,104,183

MACHINE FOR OPERATING UPON SHOE HEELS Filed May 25, 1934 7 Sheets-Sheet l Fig. 1

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MACHINE FOR OPERATING UPON SHOE HEELS Filed May 25, 1934 7 Sheets-Sheet 2 1938. c. G. BROSTROM MACHINE FOR OPERATING UPON SHOE HEELS Filed May 25, 1934 7 Sheets-Sheet 3 Fig.

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MACHINE FOR OPERATING UPON SHOE HEELS- Filed May 25, 1934 7 Sheets-Sheet 4 20 2/4 M56111 2 4 1 w W Jan. 4, 1938. w c. G. BRosTRoM I MACHINE FGR OPERATING UPON SHOE HEELS Filed May 25, 1934' 7 Sheets-Sheet 5 we mm Jan. 4, 1938. c 5. BROSTROM 2,104,183

MACHINE FOR OPERATING UPON SHOE HEELS Filed May 25, i934 v '7 Sheets-Sheet 6 Fig. 5 w

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MACHINE FOR OPERATING UPON SHOE HEELS Filed May 25, 1934 7 Sheets-Shed 7 Patented Jan. 4, 1938 UNITED STATES PATENT OFFICE MACHINE FOR OPERATING UPON SHOE- HEELS Application May 25, 1934, Serial No. 727,509

171 Claims.

My invention relates to means for performing operations" upon the heels of shoes, being more particularly concerned with the finishing or burnishlng of the curved peripheral portion, as that of the top-lifts of heels before their attachment to the shoes. It is an object of the invention to perform the finishing or other operation automatically at a relatively high rate and with the production of uniform results.

In the attainment of this object, I utilize, as a feature of the invention, a movable tool which may be rotated or oscillated and which, in the present instance, is a burnishing tool. About this tool the heels to be operated upon are carried by holders, there being preferably a plurality of these holders upon the heels in which the tool acts simultaneously. This plurality of holders may be mounted upon a rotatable turret. As herein disclosed, the movement of the holders is one of revolution about both the axis of the tool and of the turret, the holder or holders rotating also about the longitudinal axes of the heels they contain. Byfiproducing these movements at the proper relative speeds and uniformly, all portions of the peripheral surface of each heel to be operated upon may be subjected to the action of the tool for the same length of time, the work being completed during the travel of the holder once about said tool. Moreover, the holders may be maintained in the same angular relation about their axes during this revolution. This facilitates the application or loading ofthe heels, since a breast-bar or other gage upon each holder will be kept in a chosen relation to the loading position. With plural holders, the tool will be caused to act simultaneously upon all the contained heels, these being applied and removed successively as the holder passes through a limited arc of their travel at the loading position. At this position there may be means for'facilitating the loading of the holders and means for ejecting the finished heels. To insure continuous contact with the tool of the curved surfaces operated upon, the holders may be moved bodily with respect to the tool, 45 as by being mounted upon individually movable carriages normally urged toward the tool, this being conveniently effected by springs. Control is exercised over this bodily movement of the hold- 50 ers, as by a cam or cams, and at certain periods during their travel the holders will be removed from the tool to give opportunity for loading and unloading. At this time, elements of the holders which clamp the heels may be caused to separate \automatically and again approach each other to produce their clamping effect. Movement of a holder into co-operation with the tool when no heel has been applied, with possible resulting damage, is prevented by locking means released only by the presence of a heel in clamped relation.

Other features of the invention involve the structure of the heel-holders, the manner in which they position and retain the heels, their action in clamping and unclamping said heels, and their rotation upon their supporting carriages; the means for moving the carriages and for controlling this motion, including a locking device for each carriage; a support under the guidance of which the heels may conveniently be inserted by the operator between the clamping members of the holders, a machine-driven element being disclosed as a possible part of this loading arrangement; the establishment of a proper loading relation between the support and the holders; the ejection of the finished heels from the holders; the structure of the burnishing tool and the manner of its adjustment, both bodily and sectionally, and of applying heat to it; the gaging or positioning of portions of v the heel-holders; and interchangeable connections whereby the tool may be either rotated or oscillated.

In the accompanying drawings, a particular embodiment of the invention is illustrated,

Fig. 1 being a front elevation of my improved machine, with parts broken away;

Fig. 2, a similar view in side elevation, lookin from the left in Fig. l; s

Fig. 3, a broken top-plan view;

Fig. 4, an enlarged horizontal section on the line IV--IV of Fig. 2, parts being omitted;

Fig. 5, an enlarged elevation, partly in section, of the upper portion of the machine;

Fig. 6, an enlarged sectional detail on the line VIVI of Fig. 5;

Fig. 7, an enlarged vertical section through the shafts of the turret and burnishing tool and through associated adjusting means;

Fig. 8, a similar view through half the burnishing tool and its immediately associated adjusting elements;

Fig. 9, a detail in front elevation of the cams for controlling the work-holding carriages;

Fig. 10, a perspective view of the elements controlling the work-clamping means, the parts being shown as separated;

Fig. 11, alike view of a turret-actuated loading device for the heel-holders;

Fig. 12, a detail. in perspective of a portion of said device; while Fig. 13 shows in perspective a driving connection for producing oscillatory movement of the burnishing tooi.

The apparatus has a frame furnishing both a support for the active elementsand an enclosure for the major portion of those, other than the ones to which direct access by the operator is desired. The principal mechanisms A and B are respectively that by which .the heels or other work-pieces are held for the operation upon them, and the means, more essentially a movable tool I),

which performs such operation.

Considering first the work-presenting mechanism A, there is journaled vertically in the frame a tubular shaft 22 having fast upon its upper extremity a horizontal spider 24 furnishing the major element of a turret. This spider is shown as divided into four equal sections between which are spaces having at each side parallel ways for the guidance radially of the turret of a carriage 26, which may have anti-friction rolls 2'! (Fig. 6) for contact with the opposite sides of the spiderarms. Each of the four carriages has mounted upon it the lower portion of a clamp which will hold a heel H with an attaphed top-lift T for presentation to the tool I). Secured in an "upright position in the carriage is a sleeve 28 (Fig. 5), and rotatable in this sleeve is a spindle 30. The spindle is bored to receive a plunger 32 yieldable downwardly against the resistance of a relatively heavy spring 34 contained in the bore. Said plunger is compelled to rotate with the spindle by a slot-and-pin connection 36 and has secured to its upper end a double prong 38 arranged for engagement with the heel-seat-end of the heel. Keyed to the spindle 30 to rotate therewith is a sleeve 40. The adjacent ends of the

sleeves

28 and 40 support or are provided with contacting cam-surfaces 42, both of which surround the axis of rotation of the spindle and are best shown in Fig. 10. The purpose of these cams will be later explained. Surrounding the upper portions of the spindle 30 and sleeve 40 is a carrier-sleeve 44, yieldable downwardly against a spring 46 interposed between it and the sleeve 40 and rotated with said sleeve by a slot-and-pin connection 48. The carrier-sleeve, at all times turning with the spindle, is to be considered a portion thereof. Trunnioned at 50 upon the carrier-sleeve is a work-clamping table 52. The heel-seat-end of the heel rests upon this table, the pivotal mounting allowing it to accommodate itself to heels of different pitches. Depending from one side of the table is a fork 54, and arranged to turn about the adjacent trunnion of the table is an arm 56 provided with a portion extending between the branches of the fork. The arm may be fixed in different angular positions, to correspond to the pitch of the heel being operated upon, by the engagement of a spring-actuated detent 58 which it carries with a toothed segment 60 (Fig. 5) attached to the carrier-sleeve 44. Between the arm and the fork is a torsion-spring 62 which tends to turn the table clockwise. The movement of the table in either direction upon its pivotal mounting is limited by the contact of the fork with the arm. The heel may be correctly located upon the table by a breast-gage, in the form of a bar 64 extending across one side of said table, and by opposite side-gages, shown as

arms

66, 68 pivoted upon the table. These arms are geared at 68 to turn together, a spring I0 (Fig. 3) holding them normally toward each other. The breast-bar and aide-arms are preferably mounted upon a slide I2'movable transversely of the table and furnishing a portion of its supporting surface. The slide is secured in position by a camlever I4. This provides for the positioning of these gaging members to correspond to the varying relation between the heel-seat-ends of heels of different types and their tread-surfaces. The prongs 38 of the plunger 32 project upwardly through an opening in the center of the table 52 to such an extent thatthey will engage a heel applied to said table.

Each heel-clamping means may be completed by an upper contact member or. pad arranged for engagement with the top-lift of the heel. At each side of the table 52 a rod or upright 82 rises from the corresponding carriage 26, the upper extremities of each pair of rods being tied together by a bar 84. Guided upon these rods is a bar or slide 86, the central portion of which is yoked vertically at 88. The lower half of the yoke carries the pad 80, backed by an anti-friction bearing 83 to permit freerotation. .The upper portion of the yoke has connected to turn in it a screwthreaded through the bar 84. By turning the screw by its hand-wheel 92, the pad 80 may be adjusted vertically to bring it to the proper relation to the table 52 for heels of different heights. It may be locked in this adjusted position by a' divided portion 94 of the bar 84, this divided portion being clamped upon the screw 90 by a screw 96 turned by a hand-wheel 98.

The four tables 52 with their pads 80 are revolved by the turret 24 about the tool b, so the operating point is gradually shifted about said tool. At the same time, each of these workclamping holders is rotated about a vertical axis, so the point of operation is correspondingly moved about the periphery of the top-lift. The movements of revolution and rotation are in the directions indicated by the arrows in Fig. 4 and are provided by the following actuating mechanism: The shaft 22 of thel rret iiisgrotated to revolve the holders from a main driving shaft I00 (Figs. 1 and 2). This shaft I00 is journaled horizontally at the bottom of the frame and receives power through a belt from a source not illustrated, said belt operating over fast and loose pulleys I02. Application of power to the shaft I00 is controlled by a belt-shifter I04 movable along a support I06 by a chain of elements consisting of a link I08, a crank H0 and a bevel-pinion II2 upon a shaft H4, and a bevelsegment IIS and hand-crank II8 upon a shaft I20 extending from the rear to the front of the machine. Fixed upon the shaft I00 is a worm I22, with which meshes a worm-wheel I24 upon a short vertical shaft I26 journaled upon the frame parallel to the shaft 22. Alined with the shaft I26 and rotatable in the frame is an intermediate shaft I28 joined by spur-gearing I30 to the shaft 22. Surrounding the shaft I28 is a tubular shaft I32 which is geared at I34 to a vertical shaft I36. This, in turn, is connected by worm-gearing I88 to a horizontal shaft I40 extending to the front of the machine, where it carries a hand-crank I for rotation by the operator. At the upper portion of the shaft I26 and the lower portion of the shaft I82 are the opposite members I42, I42 of a double jawclutch. An intermediate clutch member I44 is splincd to the shaft I28. The member I44 has acting upon it a shifting yoke I46 held down by a spring I48 surrounding a depending rod I50. The lower end of the rod rests upon the rear of a treadle-lever I52. It will be seen that normally the clutch member I44 occupies its lowest position, connecting the shaft I28 with the shaft I26 so the turret will be rotated under power. If the operator wishes to turn the turret slowly, as for the purpose of making adjustments, the treadle I52 is depressed and may be temporarily locked down by a latch I54 pivoted above it upon the frame. The rear of the treadle lifts the rod I50 to cause the engagement of the upper half of the clutch. The turret-shaft is thus disconnected from the power-shaft and is joined to the shaft I32 to receive rotation, as slowly as the operator may desire, from the crank Hi. When the machine ,is ready for normal power-operation, the latch I54 is released, so the treadle'is free to allow the engagement of the lower portion of the clutch.

To rotate the heel-holders upon the turret as they are revolved thereby about its axis, each spindle 30 is united by a universal joint I68 (Fig. 7), a telescopic shaft I62, and a second universal joint I64 to a short shaft I66 journaled in a disk I68 secured to the shaft 22 with the spider 24 and forming a part of the turret. Vertical rods I 69 may join the disk and spider to each other. At the under side of the disk a gear H8 is keyed upon each shaft I66 and meshes with an idle pinion E12 rotatable about a stud I14 fixed in the disk. This pinion engages a gear H6 fast upon the frame and common to all the heel-holders. As the turret rotates and the heelholders revolve about the tool 1), the planetary gearing just described causes each holder to turn about a vertical axis passing through the heel which it carries. The gearing is preferably so designed that, for each revolution of the holder by the turret, it will be once rotated upon said turret and at a uniform speed. Consequently, each heel introduced into one of the holders at a loading position, before it again reaches such position, will have had the entire periphery of the top-lift of a heel clamped in it presented to be operated upon, and at a uniform rate. The described movement of the holders will cause them to be kept throughout their travel in the same angular relation about their vertical axes, when referred to a stationary line, as that along which heels are supplied. That is, the breastbars 64, for example, will always be parallel to the front of the machine. introduction of the heels into the holders. The presentation of the heels to the tool is modified as will be hereinafter developed.

During the presentation of each heel, its toplift may be held in operating engagement with the tool 12 by movement of the carriage 26 upon which the holder is supported. Formed upon the carriage outside the heel-holder is a casing I88 (Fig. at the center of which a vertical spindle I82 is arranged to turn. Normally this movement is prevented by a detent I84 pivoted upon the slide and engaging a ratchet-wheel I86 secured to the spindle. Turning about the spindle is a pinion I88 meshing with a rack I90 (Fig. '7) attached to the spider 24. Connecting an enlargement upon the hub of the pinion to the spindle is a spiral spring I92. The force applied by the spring to the pinion, and by said pinion through the rack to the turret, is such as to exert a constant tendency to carry the heel-holder toward the tool, except when otherwise controlled, to hold against the tool the periphery of the top-lift of the heel clamped in theholder. The maximum extent of movement may be determined by a set-screw I94 threaded into the This facilitates the spider between the carriage-ways. The force of the spring may be varied by rotating the spindle I82 to different angular positions, it being retained by the detent I84. If desired, auxiliary may be employed alone, if the forces created are sufficient.

By the present machine, the tool b is to be caused to act only upon the curved periphery of the top-lift and not'at the breast of a heel. Moreover, to avoid interference, each holder should be removed from the tool upon the entrance of said holder to the unloading and loading positions. To cause the spring mechanism to move each carriage inwardly only when the rotation of the heel-holder places the top-lift in the proper angular relation to the tool, and to move the carriage away from the tool for the discharge of a finished heel and to allow the operator to apply another heel to the holder, I have provided controlling means which removes each carriage from its active position through a definite angle in the rotation of the turret. This is preferably for that portion of the revolution or bodily movement of the carriage during which the breast of the top-lift is being turned by the holder toward the tool. This not only limits the action of said tool to the desired portion of the top-lift, but also gives time for the insertion by the operator of a heel in the holder and the ejection of the heel after the burnishing of its top-lift. Considering particularly Figs. 4 and 9, sliding in segmental guides 200 below the spider 29 are carriage-controlling members having segmental shanks 28i, movable in the guides and with cam-portions 2M overlapping each other and lying in planes above the shanks. An additional guiding effect may be furnished by studs fixed in the frame and having portions 202 lying in arcuate slots 2% in the cam members. Each carriage 26 has depending from its outer extremity a roll 286 (Fig. 5), and when this roll is in contact with arcuate edges 288 of the cams, the carriage is drawn out against the force of its springs I92 and I96, with the top-lift of the heel in its holder removed from the tool b. At this time a heel may be inserted in the holder, following the ejection of the heel previously operated upon. At 2I8 an inwardly inclined surface of one of the cams permits the springs to carry the holder into the operating position, just as the breast-corner is brought by the rotation of the holder into position for contact with the tool. When the roll 206, in the operating travel of the holder, reaches the opposite extremity of the cam, it engages an outwardly inclined surface 2I2 of the second cam, which leads to the overlapping arcuate surfaces 208 concentric with the axis of the turret. This removes the top-lift from the tool, placing the heel in position for ejection. The time of removal of the holders from and their return to the active operating position may be altered by changing the relation of the camsurfaces 2H) and 2I2 circumferentially of the turret, this being accomplished by sliding them simultaneously in their guides. For this purpose each shank 20I bears upon its outer edge a rack 2I4, and with this meshes a pinion 2 I6 fast upon the upper extremity of a short vertical shaft 2". Bevel-gearing 220 joins each of the shafts M8 to one of two horizontal side-shafts 222 connected to an intermediate shaft 224 through bevelgearing 226. One of the shafts 222 is extended to the front of the machine where it carries a hand-wheel 228. This single actuating or adjusting means, when turned by the operator, not only moves the cams at the same time but also maintains the carriage-advancing and -retracting inclines 2l0 and H2 symmetrically disposed with respect to the inactive position of the holder. The accurate presentation and withdrawal of the breast-corners for different sizes of heels is thus insured.

During the time each holder is in a loading and ejecting position, withdrawn from the tool I) by the cam-surfaces 203 as just described, the table 52 and the prong 30 are lowered to allow the introduction of a heel. This is effected by the cams 42 upon the ends of the

sleeves

28 and 40, the latter being rotated continuously by the gearing I10, I12, I16. These cams are of such form, as appears in Fig. 10, that during the loading and unloading periods the sleeve 40 is allowed to descend and with it the spindle 30 and the carrier-sleeve 44, thus separating the table and prong from the pad 60 and leaving a space for the introduction of a heel. The downward movement is under the influence of a helical spring 234 surrounding the spindle 30 and interposed between the upper member of the universal joint I60 and a thrust-bearing 235 abutting against the lower extremity of the sleeve 26. At this time, the operator applies a heel to the table 52 with its breast against the gage 64 and between the arms 66, holding it momentarily. Then, as the holder approaches the point at which the cam-surface 2l0 allows its carriage to move into the operating position, the contour of the cams 42 causes the

sleeves

40 and 44 and the spindle 30 to be forced up against the resistance of the spring 234, so the top-lift strikes the abutment-pad 00. Movement of the table-carrier stops, and the spindle continues to rise to the maximum height produced by the earns 42, compressing the spring 46. The prong 30 is thus forced into the heelseat-end of the heel, the spring 34 yielding. The heel is now clamped firmly in the holder, with the top-lift at a level determined by the adjustment of the pad 80. The double prong holds it both against transverse displacement upon the table and rotation about a vertical axis. When the holder reaches an unloading position, the cams 42, by their relative rotation, release the table and prong, so the spring 234 lowers them to permit the ejection of the heel.

Were the cams 204 alone depended upon to govern the just-outlined movement of the holder, in absence of an applied heel danger might arise by the contact of the tool with such elements as the rods 02. I guard against this by making the inward travel of each carriage 26 depend upon the presence of a heel in the holder. About the lower portion of each carrier-sleeve 44 is an annular horizontal flange 236 (Fig. 5), presenting at its under side a continuous contact-surface. Guided in the carriage, with its upper end in contact with the flange, is a rod 238 secured at the lower extremity to a hook 240 pivoted at one side of the carriage. A spring 242 urges the hook upwardly, so the engagement of the rod with the flange is maintained. Without a heel in the holder, the carrier-sleeve 44 is elevated by its spring 46, and the correspondingly raised flange 236 permits the rod and hook to assume their upmost positions. With the carriage 26 at the outer portion of the turret under the control of the cams 204, as it is for the loading of the holder, the hook is at the outer side of a retaining pro- Jection 244 fixed to the turret. In this condition the carriage is locked in an inactive position, so the cam-surface 2l0 will have no effect upon it, and contact of the holder elements with the tool is guarded against. But when the operator inserts a heel in the holder the table 52 and sleeve 44 are thereby lowered, and the flange 236 depresses the rod 238, carrying the hook 240 below its retaining projection. This leaves the cams 204 in full control.

To support the heels and facilitate their application to the holders, an inwardly and upwardly inclined loading platform 250 is provided, the angle approximating that of the heel-seatends of the heels in the holders. Its inner edge is curved at c on the arc of a circle having its center at the axis of the turret (Fig. 3), lying close to the path of the heel-holders and extending through the loading position. To adjust the platform for different types of heels, it is mounted to tilt upon the frame on trunnions 25l and has a horizontal pin 252 (Figs. 1 and 2) carried at its under side and movable in a slot extending transversely of the upper end of a bar 254 mounted to slide vertically upon the front of the frame. At one edge the bar is formed with rack-teeth engaged by a pinion 256 fast upon a short horizontal shaft 258. The shaft may be turned by a hand-wheel 260 to raise or lower the outer end of the platform. A lever 262 having an eccentric portion bearing upon the bar may be used to clamp said bar in its adjusted position. To enable the operator to conveniently make this adjustment for heels having known characteristics, the platform may have secured to it a vertically extending scale 264 movable along an index-point 266 projecting from the frame. The scale-divisions correspond to the pitches of various heels. Preferably, the scale is made readily removable as by being received in guides at opposite sides of an arcuate holder 260. It may be removed from the holder by a finger-piece 210 at its upper end and replaced by another scale differently graduated to correspond to another group of heel-types.

The platform 250 is shown in Fig. 11 as carrying a gage 265, under the guidance of which the adjustment of the breast-bars 64 of all the heelholders may be made uniform. There may be applied to the upper face of the platform a readily removable block 261 slotted to receive a shank 263 to which is pivoted the gage 265. The shank is slotted longitudinally and is held adjustably in place upon the block by a set-screw 21 I. When a change in the heel-form calls for a variation in the gaging means on the heel-holders, the block 261 is positioned on the platform with the gage turned down and located in the correct gaging relation by the screw 2. Then the slide 12 of a holder at the loading position is adjusted to bring the gaging face of its breast-bar into contact with the end of the gage. This having been accomplished, the gage is swung back to its inactive position, clear of the turret, and said turret rotated by the crank I to bring the succeeding heel-holder into position and the gaging operation repeated until completed for all the holders. The block and gage are thereupon removed from the platform.

The holder-tables 52 have already been described as being free to tilt on the carriage-sleeves 44 to an extent permitted by their forks 84,, to adapt themselves to the inclination of the heels. It is important that while each holder is traveling through the loading position, the outer edge of its table shall be at such a height that the heels will slide upon it from the platform without interference, and that after a heel has been seated upon the table said table shall be so inclined that the tread-surface of the top-lift is substantially parallel to the engaging surface of the pad 88. The arm 58 is therefore so adjusted that the table-edge is normally held by the spring 62 slightly below the adjacent edge of the platform 258, the latter having been properly adjusted for the pitch of the heel being operated upon. Projecting from the under side of the table at its outer edge is an angular finger 212. This, in the leading position of the holder, travels just below a stop or limiting bar 214 (Figs. 3 and 5) lying beneath and transversely of the upper end of the platform and with its inner edge curved to correspond to the path of the finger. The bar has at its extremities upwardly extending

arms

216, 216 guided by standards 218 upon the frame to move vertically. Tension-springs 288 joining the bar to the standards draw said bar against the platform. As a consequence of this arrangement, the bar is kept in the same relation to the platform however the latter may be adjusted.

The downward and outward projection of the finger 212-is such that as it passes beneath the platform it is always under the bar, and, as the table 52 tilts when the operator slides the heel upon it from the platform, contact of the finger with the bar limits the movement of the table. The angle of the table to the heel-engaging surface of the pad 88 is now substantially that between the heel-seat-end of the heel and its treadsurface, this being one which will correctly present said tread-surface to the pad 88 when the holder closes to clamp the heel. This limiting contact, it will be observed, because of the extension of the bar 2'14, will be effective during the entire travel of the holder through the loading position.

The finished heels may be discharged, when the holders are opened by the earns 42, in the following manner: Turning about one of the rods 82 of each holder is a compound lever L (Fig. 3) consisting of a main arm 282 upon which is pivoted a contact-arm 284 so arranged that it lies at the inner side of the breast of a heel in the holder, being forced yieldably out by a spring 286 situated between it and the arm 282. This latter arm has an outer cam-edge 288. A torsion-spring 288 surrounding the rod 82 holds the arm 284 away from the heel in the holder and the surface 288 in a position which will cause it to strike a contact-projection 288. This projection is secured by a. set-screw 282 in a holder or support 284 for adjustment toward and from the path of the cam-arm 282, while the holder is adjustable upon the frame along the path of the arm by a slot-and-screw connection 296. These adjustments are so made, that just as the earns 42 act to free the heel in a holder the cam surface 288 contacts with the projection 298, with the result that the arm 284 is swung quickly against the heel. The yield of this arm, because of the spring 286, enables the contact with the heel to be made promptly upon release without the frame. The discharged heels may be collected in a receptacle 382 remoyably supported upon a bracket 384 projecting from the frame.

The portions of the operating mechanism B more directly associated with the work are shown in detail in Fig. 8. Through the tubular turretshaft 22, a tubular shaft 3| 8 extends: carrying near the upper extremity a downwardly recessed plate 3| 2 upon which is secured to rotate with it a cover-plate 3l4, furnishing a support for the active operating portions of the bumishing tool. Since the peripheries of top-lifts to be operated upon will lie at different angles with respect to the longitudinal axes of diverse types of heels, it is desirable that the operating surface of the tool be angularly adjustable so it may contact accurately with the top-lifts of the heels clamped in the holders. I therefore form the tool sectionally in divided rigid segments 3l6 arranged in a closely placed series, These segments are pivoted upon a transversely curved circular rib 3l8 at the periphery of the plate 3l4, this rib entering a curved slot 328 lying across the under side of each segment. Opening inwardly through each segment from the slot 328 is a radial slot 322 into which extends one of a circular series of upward projections 324 from the plate 3. Upon this mounting the segments 3|6 may rock and yet be retained against circumferential displacement. Each segment has a peripheral operating surface 326, arranged for contact with the entire width of a top-lift, and an overhanging projection 328 which will extend over the margin of the tread-surface of said top-lift. The contour of the surface 326 longitudinally of the axis of the tool b is constant, corresponding generally to the transverse contour of top-lifts. To hold the segments in place upon the rib 3l8 with a capacity for angular adjustment, there engages their inner ends inside said rib a circular rib 338 depending from a plate 332 splined to move vertically upon a hub 333 of the plate 3 l4. This hub surrounds a shaft 334 which furnishes a separable continuation of the shaft 3l8. The rib 338 is forced yieldably against the segments by a spring 336, which is about the hub 333 and abuts at its upper extremity against a collar 338 threaded upon said hub. Change in the vertical position of the collar varies the force exerted by the spring upon the segments to raise their outer portions. This movement is resisted and governed by the contact with the segments outside the rib 3l8 of an annular rib 348 upon the outside of a ring 342 surrounding the plate 332 and having its hub 344 splined to the hub 333. The tendency of the spring 336, acting through the segments, is to force the ring up, but this is resisted by contact of the hub 344 with a hand-wheel 346 threaded upon the upper extremity of the hub 333. Consequently, rotation of this hand-wheel will either cause the operating surfaces of all the segments to be simultaneously lowered or will permit the spring 336 to raise them. In this way the angle of all the surfaces 326 will be altered to the same extent, while the practical continuity of the bumishing periphery of the tool remains unaltered. A hand-nut 358, threaded upon the upper extremity of the shaft 334, holds the tool-assembly against displacement.

To impart to the segment-surfaces 326 the proper bumishing temperature, there may be situated in the recess of the plate 312 a circular electrical heating unit 352. Two conductors 354, supplying current to this unit, pass through the shaft 3l8 and are brought out below the surrounding shaft 22 to two collector-rings 366 (Fig. 7). Contacting with these rings are brushes 358 carried by a casing 360. The current-de- I livering device, consisting of the rings, casing and brushes, is so mounted that it may move vertically as a unit with the shaft M0. The brushes are joined by conductors in a flexible cable 362 to a junction-box 364 (Fig. 1).

The burnishing tool should be capable of adjustment vertically for action upon the top-lifts of heels of different heights. The shaft 3I0 has fixed to it two

collars

310, 310, lying upon opposite sides of a supporting yoke 312 (Fig. 2) between the arms of which the casing 360 is mounted. Opposite extremities of the yoke are guided for vertical movement by

rods

314, 314 secured in the frame. Between these rods the yoke has a vertical threaded opening to receive a screw 316 rotatable in the frame. turned through bevel-gearing 316, a horizontal shaft 380 and a hand-"wheel 382 upon said shaft at the front of the frame. Rotation of the handwheel turns the screw 316 in one direction or the other, correspondingly raising or lowering the yoke, and thus altering the vertical position of the burnishing tool. In connection with this adjustment of the tool, the heel-clamping pads 60 will first be adjusted to the desired uniform.

height by their hand-wheels 32. To facilitate this, there may be used as a gage a bar 384 (Fig. 1) arranged to be turned from an inactive to an active position about a standard 366, rising from the frame at one side of the turret and carrying a collar 361 upon which the bar rests. The collar may be secured at different heights by a setscrew 368. The pads 60 having been positioned under the guidance of this gage, when it is swung into proximity to the path of the holders, the tool may be correspondingly adjusted by turning its hand wheel 382. Below the yoke 312 the shaft 3I0 passes through a bearing 330 in the frame (Fig. 7), and beneath this hearing power is applied to the shaft to rotate it, and the tool b, continuously during the operation of the ma.- chine. This is directly effected by spiral gearing 392 joining it to the driving shaft I00. The arrow in Fig. 3 shows the resulting direction of rotation of the tool. It is the same as that of the turret 24 and opposite to the rotation of the heel-holding platforms 52. The shaft 3I0 is splined to move vertically through its gear during the adjustment resulting from the movement of the yoke 312.

To outline the operation of the machine, and assuming that the type or size of heel the toplifts of which are to be burnished is changed. the operator disconnects the driving shaft I00 from the turret 24 by depressing the treadle I52, this joining said turret to the shaft I40. By the crank I4I each of the heel-clamping

holders

52, 80 may be brought into the loading position opposite the platform 2.50, and by the

gaging members

265 and 384 the heel-locating means of the clamping table 52 and the pressure-abutments 80 are respectively adjusted to place the heel clamped in the holder in correct relation to receive the action of the tool b. Said tool is also adjusted vertically by the hand-wheel 362 to correspond to the tread-abutments, and the angle of the burnishing periphery of its sections 3I6 caused to agree with the edge of the heellift through rotation of the hand-wheel 346. By the hand-wheel 260, the angle of the loading platform is caused to correspond to that of the heel-seat-end of the heel in the holder when its The screw is shown as tread-surface is resting against the abutment 60. Through adjustment of the arm 66, each table 62 is brought to a position in which its finger 212 will pass somewhat below the platform-controlled bar 214. The treadle I62 may now be released from its latch I64 and the belt-shifter I04 actuated to apply power to the driving shaft I00. This produces continuous rotation of the turret, revolving the heel-holders and at the same time rotating them about their respective vertical axes upon their carriages 26 movable radially of the turret by the springs I 62 and I86. As each holder passes the loading position opp site the platform 260 and the unloading position immediately preceding this and opposite the chute 236, contact of the roll 206 of its carriage with cams 204 moves said holder outwardly away from the tool. Upon this movement, holder-cams 42 separate the clamping members 62 and 60 for the discharge and reception of the heels. With a holder thus traveling open along the platform, the operator takes a heel H from a tray 400 (Fig. 1), supported at one side of the machine by a bracket 402, and places it heel-seat-end down upon the platform 260. He then 'slides the heel inwardly and in the direction of advance of the holder until it rests upon the passing table 52 with its breast against the bar 12 and its sides held by the gages 66. By the uniform rotation of the holder once during each revolution by the turret, the breast-bar 64 is held always parallel to the front of the machine, so the introduction to and positioning of heels in the holder is facilitated. At this time the earns 42 release the table, the spring 234 carrying the tread-surface of the top-lift T against the abutment 60. The double prong 36 is forced into the heel to make its retention certain.

It may be found that the operator is not sumciently deft to render certain the application of the heels to the traveling holders. In that case, there may be added a loading device which operates, in part, under the power of the machine. As shown in Figs. 3 and 11, there is formed in the platform 260 and extending into the chute 266, a transverse slot 404, the direction of extension of which is also inwardly, approximating that in which the operator would advance the heel in purely manual loading. In the slot a slide 406 is mounted to move. Secured to the slide above the platform is a transverse bar 406, to the outer extremity of which is pivoted a heelpositioning contact member 0. This member may be fixed at different angles across the slide by a set-screw 4II threaded through the bar 406 and bearing upon a projection 2 from the member. A block 4 depends from the slide through the slot (Fig. 12) and has adjustably secured to it by a set-screw 6 a finger 6, for projection to different extents toward the turret. From the carrier-sleeve 44 of each holder is a projection 420, the path of which in the rotation of the turret and of the holder brings it into contact with the slide-finger. Consequently, the passage of each holder past the loading platform causes the slide to move in registration with it transversely of its path of advance, and then, as the holder-projection slips past the end of the finger, to release said slide. This is shown as returned to a. normal position by a spring 422, with the bar 406 resting against a wall 424 dividing the loading platform from the discharge chute. The spring may be of the helical type, joined at its ends to the under side of the chute and to the finger 6. A pad 426 of some the tool.

slide-projections will cause the slide and its member 4! to move with it. By adjustment of the projection or finger 8, the release of the slide may be caused to occur just aiter the heel is clamped in the holder. Therefore, with the member 4") adjusted as to angle to best present a heel to the holder, the operator needs only to slide the heel in under its guidance until said heel is seated upon the table 52, the travel of the member 4) maintaining the heel in proper loading alinement with the table during the travel of the latter along the platform. To do this, no particular skill is necessary.

The heel having been clamped, the holder is released by the cams 204 and carried into burnishing engagement with the tool I). The springs which eilect this movement are, however, only permitted to act if the holder has received its heel. In the loading and unloading positions of the holders, each is locked out against the force of the springs by its hook 240, which is released only as the application of a heel to the holder depresses the sleeve 44 and the rod 238. Passing from the loading to the operating position, the cam-incline 2l0 allows contact of the clamped heel with the surface 326 of the tool just as the rotation of the holder brings one breast-comer opposite said surface. Rotation of the tool and rotation of the holder causes the curved periphery of the heel to receive the burnishing action until the opposite cam-incline 2l2 removes the holder from active co-operation with the tool at the opposite breast-corner. The unloading position has then been reached; the cams 42 unclamp the heel; and contact of the lever L of the holder with the stationary projection 290 ejects the heel into the chute 298, to be conducted over the chute 300 to the receptacle 302. The holder now arrives at the loading position, having been both revolved and rotated through 360, and is ready for the reception of another heel. While the action of the tool has been described in connection with a single heel only, inspection of Fig. 3

of the drawings will make it clear that the burnishing of the heels in three holders is taking place simultaneously, while the fourth holder is discharging its heel and being again supplied.

Some shoe manufacturers prefer to use an oscillatory rather than a rotary burnishing tool. To meet this requirement, I have provided means for the ready conversion of the movement of the tool '1) from one type to the other. Fig. 13 illustrates connections for producing oscillation of Here the spiral gearing 392 has been removed and an arm 432 secured to the toolshaft 3l0. Fixed in vertical bores in the frame are

spindles

434, 434 spaced from one another and having turning upon them a yoke 436. In this yoke a horizontal shaft 438 is rotatable. One extremity of this shaft is joined by a link 440 to the arm 432. Clamped upon the shaft between the arms of the yoke is a head 442 having a cylindrical extension 444 entering an inclined bore in an enlargement 445 at the inner end of the shaft I00. As this shaft I rotates, the revolution of the inclined member 444 will oscillate the head 442 both vertically and horizontally and will communicate the latter motion to the yoke 436. This is transmitted through the link 440 to the arm 432 on the tool-shaft 3l0. The tool is thus caused to move back and forth in relatively short strokes across the work, which may be presented to it in precisely the manner already described in connection with the rotation of the tool. The arrangernent for either form of actuation requires no alteration of the structure of the machine but merely the interchange of a few simple and readily accessible elements.

Having described the invention, what is claimed as new and desired to be secured by letters Patent of the United States is:

1. In a machine for operating upon shoe-heels, a plurality of traveling heel-holders, and a movable tool for operating simultaneously upon the heels in plural holders.

2. In a machine for operating upon shoe-heels, a movable tool, a heel-holder traveling about the tool, and means for rotating the heel-holder during its travel.

3. In a machine for operating upon shoe-heels, a movable tool, and a heel-holder traveling about the tool and mounted for bodily movement with respect to the tool.

4. In a machine for operating upon shoe-heels, a movable tool, a plurality of heel-holders traveling about the tool, and means for rotating each holder during its travel.

5. In a machine for operating upon shoe-heels, a movable tool, a plurality of heel-holders traveling about the tool, and means for rotating each holder during its travel, each holder being bodily movable toward and from the tool independently of the associated holders.

6. In a machine for operating upon shoe-heels, a rotatable tool, a plurality of heel-holders revoluble about the tool, and means acting during such revolution for rotating each holder about an axis extending longitudinally of the contained heel.

'7. In a machine for operating upon shoe-heels, a movable tool, a plurality of heel-holders revoluble about the tool, and means acting during such revolution for rotating each holder in a direction opposite to its revolution about an axis extending longitudinally'of the contained heel.

8. In a machine for operating upon shoe-heels, an oscillatory tool, a plurality of heel-holders revoluble about the tool, and means acting during such revolution for rotating each holder about an axis extending longitudinally of the contained 9. In a machine for operating upon shoe-heels, a movable tool, a plurality of heel-holders revoluble about the tool, and means for rotating each holder about an axis extending longitudinally of the contained heel, such rotation occurring once during each revolution of the holder.

10. In a machine for operating upon shoe-heels, a movable tool, a plurality of heel-holders revoluble about the tool, and means for rotating each holder about an axis extending longitudinally of the contained heel, such rotation occurring once during each-revolution of the holder and at a uniform speed.

11. In a machine for operating upon shoeheels, a series of heel-holders, means for movin the holders in a closed path continuously during the operation of the machine, means for continuously rotating each holder during its travel, and a movable tool for operating upon the traveling heels,

12. In a machine for operating upon shoeheels, a series of heel-holders, means for moving the holders in a closed path continuously during the operation of the machine, means for continuously rotating each holder during its travel, a movable tool, and means for moving the tool in simultaneous engagement with the series of traveling heels.

13. In a machine for operating upon shoeheels, a movable tool, a heel-holder revoluble about the tool, and means for maintaining the holder in a constant angular relation about its axis with respect to a relatively fixed line past which said holder revolves altering its distance therefrom in such travel.

14. In a machine for operating upon shoe- .heels, a movable tool, a heel-holder revoluble about the tool, and means for maintaining the holder in a constant angular relation about its axis with respect to the front of the machine.

15. In a machine for operating upon shoeheels, a movable tool, a heel-holder revoluble about the tool, and means for maintaining the holder in a constant angular relation about its axis with respect to the line along which heels are introduced into said holder.

16. In a machine for operating upon shoeheels, a movable tool, a plurality of heel-holders revoluble about the tool, and means for maintaining all the holders during their revolution in a constant angular relation about axes extending longitudinally of the contained heels.

17. In a machine for operating upon shoeheels, a movable tool, a plurality of heel-holders revoluble about the tool and each having a breastgage, and means for maintaining all the holders with their breast-gages substantially parallel to the front of the machine.

18. In a machine for operating upon shoeheels, a movable tool, a plurality of heel-holders revouble about the tool, means for facilitating the loading of the heels into the holders, and means for maintaining all the holders during their revolution in a constant angular relation to the loading means about axes extending longitudinally of the contained heels.

19. In a machine for burnishing the top-lifts of shoe-heels, a rotatable turret, a generally circular tool movable at the axis of the turret, and plural heel-holders carried by the turret and all co-operating with the tool,

20. In a machine for burnishing the top-lifts of shoe-heels, a rotatable turret, a generally circular tool movable at the axis of the turret, plural heel-holders carried by the turret and all cooperating with the tool, and means for rotating each holder upon the turret.

21. In a machine for burnishing the top-lifts of shoe-heels, a rotatable turret, a burnishing tool rotatable about the axis of the turret, and plural heel-holders carried by the turret and all co-operating with the tool.

22. In a macihne for burnishing the top-lifts of shoe-heels, a rotatable turret, a tool movable in opposite directions, and plural heel-holders carried by the turret in simultaneous co operation with the tool.

23. In a machine for burnishing the top-lifts of shoe-heels, a rotatable turret, a generally circular tool movable at the axis of the turret, heelholders rotatable upon the turret, a gear fixed relatively to said turret, and gearing rotatable upon the turret and joining the fixed gear to the holders.

24. In a machine for burnishing the top-lifts of aromas shoeeheels, a rotatable turret, a generally circular tool movable at the axis of the turret, heel holders rotatable upon the turret, and gearing for rotating each heel-holder once during each rotation of the turret.

25. In a machine for operating upon shoeheels, a movable tool, a carriage traveling about and movable toward and from the tool, a heelholder rotatable upon the carriage, and means forrotating the holder during the travel of the carriage.

26. In a machine for operating upon shoe-heels, a movable tool, a plurality of carriages traveling about and movable toward and from the tool, a heel-holder rotatable upon each carriage, and means for rotating the holders during the travel of the carriages. f f

27. In a machine for operating upon shoe-heels, a plurality of traveling heel-holders, a movable tool for operating simultaneously upon the heels in plural holders, and means for moving all the carriages toward the tool.-

28. In a machinefor heels, a rotatable tool, a plurality of heel-holders revoluble about the tool, a carriage for each holder movable radially with respect to the axis of revolution, and means acting during the revolution for rotating each holder upon the carriage about an axis extending longitudinally of the contained heel; I

29. In a machine for operating upon shoe-heels, a series of heel-holders, means for movingthe holders in a closed path continuously during the operation of the machine, means for moving each holder laterally of the path, means for continuously rotating each holder during its travel, and a movable tool for operating upon the traveling heels.

30. In a machine for operating upon shoeheels, a movable tool, a plurality of carriages re- L voluble about the tool, a heel-holder rotatable upon each carriage, means governed by the contour of a heel in each holder for moving the carriage and heel toward the tool, and means for rotating each holder upon the carriage.

31. In a machine for operating upon shoe-heels, a movable tool, a plurality of carriages revoluble about the tool, a heel-holder rotatable upon each carriage, means governed by the contour of a heel in each holder for moving the carriage and heel toward the tool, and means for maintaining all the holders during their revolution in a constant angular relation about axes extending longi tudinally of the heels. 1

32. In a machine for burnishingthe top-lifts of heels, a rotatable turret, a tool movable at the axis of the turret, a plurality of carriagesmovable upon the turret, and a heel-holder rotatable upon each carriage and co-operatin'g With.the tool. I

33. In a machine for burnishing thetop-lifts of heels, a rotatable turret, a burnishing tool rotatable about the axis of the turret, a plurality of carriages movable upon the turret radially with respect to the tool, and a heel-holder rotatable upon each carriage and co-operating with the tool.

34. In a machine for operating upon shoeheels, a tread-abutment, a carrier movable toward and. from the abutment, a table pivoted upon the carrier opposite the abutment and arranged for contact with the heel-seat-end of a heel, a breast-gage secured to the table, and side-gages yie dable at opposite sides of the table. I

operating upon shoe- 35. In a machine for operating upon shoeheels, a tread-abutment, a carrier movable toward and from the abutment, a table pivoted upon the carrier opposite the abutment and arranged for contact with the heel-seat-end of a heel, a slide movable upon the table, and a breastgage and side-gages carried by the slide and being adjustable together with reference to the tread-abutment as the pitch of the heels being operated upon changes.

36. In a machine for operating upon shoeheels, a tread-abutment, a carrier movable toward and from the abutment,.a table pivoted upon the carrier opposite the abutmentand arranged for contact with the heel-seat-end of a heel, a slide movable upon the table. heel-gaging means carried by the slide, and means for clamping the slide in different positions upon the ward and from the abutment, a table pivoted upon the carrier opposite the abutment and arranged for contact with the heel-seat-end of a heel, gaging means secured to the table for engagement withsthe heel, means adjustably limiting the pivotal movement of the table, and means for normally holding the table at onev of its extremes of movement.

38. In a machine for operating upon shoe-heels, a tread-abutment, a carrier movable toward and from the abutment, a table pivoted upon the carrier opposite the abutment and arranged for contact with the heel-seat-end of a heel, a fork extending from the table, and a stop variable in position upon the carrier between the branches of the fork.

39. In a machine for operating upon shoe-heels, a tread-abutment, a carrier movable toward and from the abutment, a table pivoted upon the carrier opposite the abutment and arranged for contact with the heel-seat-end of a heel, a fork extending from the table, an arm turning upon the pivot of the table and extending between the branches of the fork, and a detent movable upon the arm and engaging the carrier.

40. In a machine for operating upon shoe-heels, a rotatable turret, carriages movable radially of the turret, uprights rising from the opposite sides of each carriage, a table pivoted upon the carriage, and an abutment mounted upon the uprights opposite the table.

41. In a machine for operating upon shoe-heels,

' a rotatable turret, carriages movable radially of threaded through the yoke, a slide movable upon the uprights by the screw, and an abutment mounted upon the slide opposite the table.

43. In a machine for operating upon shoeheels, a movable tool, a rotatable turret, heel holders rotatable upon the turret and co-operating with the tool, a main driving shaft, a shaft arranged to be rotated manually, and means arranged to connect selectively either shaft to the turret to effect its rotation.

44. In a machine for operating upon shoe-heels, a movable tool, a rotatable turret, heel-holders rotatable upon the turret and co-operating with the tool, a main driving shaft, a shaft upon which the turret is supported, a shaft arranged to be rotated manually, two intermediate shafts, gearing connecting one-intermediate shaft to the tur ret-shaft, gearing connecting the other intermediate shaft to the manually rotatable shaft, andmeans for selec' ively connecting the first intermediate shaft to either the driving shaft or the second intermediate shaft.

45. In a machine for operating upon shoe-heels, a movable tool, a rotatable turret, heel-holders rotatable upon the turret and co-operating with the tool, a main driving shaft, a shaft upon which the turret is supported, a shaft arranged to be rotated manually, an intermediate shaft, a tubular shaft surrounding said intermediate shaft, gearing connecting the intermediate shaft to the turret-shaft, gearing connecting the tubular shaft to the manually rotatable shaft, and a clutch arranged to connect the intermediate shaft to either the driving shaft or the tubular shaft.

46. In a machine for operating uponshoe-heels, a movable tool, a carriage revoluble about and movable toward and from the tool, a heel-holder rotatable upon the carriage, means for rotating the'holder during the travel of the carriage and a spring exerting a constant force to move the carriage toward the tool.

47. In a machine for operating upon shoe-heels, a movable tool, a carriage revoluble about and movable toward and from the tool, a heel-holder rotatable upon the carriage, means for rotating the holder during the travel of the carriage, a spring exerting a constant force to move the earriage toward the tool, and means arranged to vary the force of the spring.

48. In a machine for operating upon shoe-heels, a movable tool, a turret rotatable about an axis at the tool, work-carriages movable upon the turret, a spring mounted upon each carriage, and gearing connecting the spring and turret.

49. In a machine for operating upon shoe-reels, a movable tool, a turret rotatable about an axis at thetool, work-carriages movable upon the turret, a spring mounted upon each carriage, gearing connecting the spring and turret, and means arranged to vary the connection of each spring to its carriage.

50. In a machine for operating upon shoe-heels, a movable tool, a turret rotatable about an axis at the tool, work-carriages movable upon the turret, a spindle rotatable upon each carriage, a

spring connecting the spindle and carriage, means for retaining each spindle in different angular positions about its axis, and gearing connecting said spindle to the turret.

51. In a machine for operating upon shoeheels, a movable tool, a carriage revoluble about and movable toward and from the tool, a heelholder rotatable upon the carriage, means for rotating the holder during the travel of the carriage, and a tension-spring joining each side of the carriage to the turret.

52. In a machine for operating upon shoe-heels, a movable tool, a carriage revoluble about and movable toward and from the tool, a heel-holder rotatable upon the carriage, means for rotating the holder during the travel of the carriage, a tension-spring Joining each side of the carriage to the turret, and means arranged to varythe point of attachment of one extremity of each spring.

53. In a machine for operating upon shoe-heels,

a movable tool, a rotatable turreta plurality of heel-holders revolved by the turret about the tool, said heel-holders being rotatable upon the turret and movable on said turret toward and from the tool, and means for controlling the movement of the holders with respect to the tool.

54. In a machine for operating upon shoeheels, a movable tool, a rotatable turret, a plurality of heel-holders rotatable upon the turret and movable on said turret toward and from the tool, and means fixed relatively to the turret and acting upon one only of the heel-holders at a time to remove it from the tool, the other holders being left free to present heels to said tool.

55. In a machine for operating upon shoeheels, a movable tool, a rotatable turret, a plurality of heel-holders rotatable upon the turret and movable on said turret toward and from the tool, means for controlling the movement of the holders with respect to the tool, and means arranged to cause the controlling means to act through difierent lengths of time in the rotation of the turret.

56. In a machine for operating upon shoeheels, a movable tool, a rotatable turret, carriages movable upon the turret, heel-holders rotatable upon the carriages in co-operation with the tool, a cam normally fixed against movement and acting to move the carriages, and means arranged to vary the position of the cam circumi'erentially of the turret to control the initiation and termination of the operation upon each heel.

57. In a machine for operating upon shoeheels, a movable tool, a rotatable turret, carriages movable upon the turret, heel-holders rotatable upon the carriages in oo-operation with the tool, a cam comprising a plurality of sections acting upon the carriages, and means for simulfaneously adjusting the cam-sections to different positions.

58. In a machine for operating upon shoehee s, a movable tool, a rotatable turret, carriages movable upon the turret, heel-holders rotatable upon the carriages in co-operation with the tool, a cam comprising a plurality of sections acting upon the carriages, and an actuating member common to the sections and by which they may be moved simultaneously in opposite directions.

59. In a machine for operating upon shoeheels, a movable tool, a rotatable turret, a plurality of heel-holders movable by the turret in co-operation with the tool through a loading and unloading position and an operating position, means for normally moving the holders toward the tool, and means for withdrawing said holders from the tool at the loading and unloading position.

60. In a machine for operating upon shoeheels, a movable tool, a rotatable turret, a plurality of heel-holders movable by the turret in co-operation with the tool through a loading and unloading position and an operating position, means for normally moving the holders toward the tool, means for withdrawing said holders from the tool at the loading and unloading position, and means for causing the action of the withdrawing means at difierent points in the rotation of the turret.

61. In a machine for burnishing the top-lifts of heels, a movable burnishing tool, a turret rotatable about an axis at the tool, a plurality of carriages movable radially of the turret, a heelholder rotatable upon each carriage, means for normally moving the carriages to bring the holders into co-operation with the tool, and means acting upon the carriages to withdraw the holders from the tool during the presentation thereto of the breast-portion of the top-lift.

62. In a machine for burnishing the top-lifts of heels, a movable burnishing tool, a turret rotatable about an axis at the tool, a plurality of carriages movable radially of the turret, a heelholder rotatable upon each carriage, means for normally moving the carriages to bring the holders into co-operation with the tool, means acting upon the carriages to withdraw the holders from the tool during the presentation thereto of the breast-portion of the top-lift, and means arrangedto vary the extent of top-lift-periphery upon which the tool acts.

63. In a machine for burnishing the top-lifts of heels, a movable burnishing tool, a turret rotatable about an axis at the tool, a plurality of carriages movable radially of the turret, a heelholder rotatable upon each carriage, a spring acting upon each carriage to urge it towards the tool, and a normally fixed cam into engagement with which the carriages are moved by the turret.

64. In a machine for burnishing the top-lifts of heels, a movable burnishing tool, a turret rotatable about an axis at the tool, a plurality of carriages movable radially of the turret, a heelholder rotatable upon each carriage, a spring acting upon each carriage to urge'it towards the tool, and a normally fixed cam into engagement with which the carriages are moved by the turret, said cam having a portion concentric with the axis of the turret and terminal portions inclined inwardly therefrom.

65. In a machine for burnishing the top-lifts of heels, a movable burnishing tool, a turret rotatable about an axis at the tool, a plurality of carriages movable radially of the turret, a heelholder rotatable upon-each carriage, a spring acting upon each carriage to urge it towards the tool, a normally fixed cam into engagement with which the carriages are moved by the turret, said cam having overlapping movable sections, gearing connecting the sections, and means arranged for manual actuation and connecting the gearing of the sections.

66. In a machine for operating upon shoeheels, a heel-holder having opposed heel-clamping members and being rotatable about an axis passing through it and through a clamped heel, means whereby the rotation of the holder produces a force urging one of the members toward the other, and means made effective by the rotation of the holder for separating the members.

67. In a machine for operating upon shoeheels, a support provided with a cam, and a heelclamping member rotatable upon the support in one direction only and having a cam movable in contact with the support-cam, both of said cams surrounding the axis of rotation of the member and acting as said member turns to both clamp and release a heel.

68. In a machine for operating upon shoeheels, a support provided with a cam, a heelclamping member rotatable upon the support and having a cam movable in contact with the cam of the support, and a spring interposed between the member and the support and holding the cams in engagement.

69. In a machine for operating upon shoeheels, a support provided with a cam, a spindle rotatable upon the support and having a cam contacting with the support-cam, and a heelclamping member pivotally mounted upon the spindle.

, 70. In a machine for operating upon shoeheels, 9. support provided with a cam, a spindle rotatable upon the support and having a cam contacting with the support-cam, a heel-engaging table pivotally mounted upon the spindle, and a yieldable prong projecting through the table.

71. In a machine for operating upon shoeheels, a support provided with a cam, a spindle rotatable upon the support and having a cam contacting with the support-cam, a sleeve yieldable upon the spindle, and a heel-clamping member pivoted upon the sleeve.

72. In a machine for operatingupon shoeheels, a support provided with a cam, a spindle rotatable upon the support and having a cam contacting with the support-cam, a sleeve yieldable upon the spindle, a heel-engaging table pivoted upon the sleeve, and a plunger yieldable in the spindle and having a prong projecting through the table.

73. In a machine for operating upon shoeheels, a traveling heel-holder having opposite heel-clamping members, opposite relatively movable members traveling with the holder and having their relative movement only in portions of such travel for separating the clamping members, and means traveling with the holder and being movable independently of such travel for controlling the clamping members. i

74. In a machine for operating upon shoeheels, a traveling heel-holder having opposite heel-clamping members, means for rotating the holder during its travel. and means made effective by the rotation of the holder for controlling the clamping members.

' traveling with and individual to the holder and 'movable relatively to each other under the power of the machine to change the clamping action of the members.

76. In a machine for operating upon shoeheels, a traveling heel-holder having opposite heel-clamping members, a plurality of cams traveling with and individual to the holder and movable upon said holder relatively to each other, and means for continuously producing such compound movement with and upon the holder.

77. In a machine for operating upon shoeheels, a traveling heel-holder having opposite heel-clamping members, means for rotating the holder during its travel, a non-rotatable cam traveling with the holder, and a cam rotatable with the holder and contacting with the nonrotatable cam.

78. In a heel-burnishing machine, a rotatable turret, a series of heel-holders movable by the turret through a loading position and an operating position, and means movable continuously upon and relatively to the turret during its ad- Vance by the rotation of said turret for supplying forces for clamping in the holders in the operating position heels received at the loading position.

79. In a heel-burnishing machine, a rotatable turret, a series of holders having opposite heelclamping members movable by the turret through a loading position and an operating position, and a pair of cam members carried by the turret and movable relatively to each other under the power of the machine to clamp in the holders at the operating position heels received at the loading position.

80. In a heel-burnishing machine, a rotatable turret, a seriesv of holders having opposite heelclamping members rotatable upon the turret through a loading position and an operating position, a cam associated with each holder and fixed against rotation upon the turret, and a cam rotatabl-e with each holder and contacting with the fixed cam.

81. In a machine for operating upon shoeheels, a tool, heel-holders movable into co-operation with the tool, means for preventing such movement, and means dependent upon the application of a heel to the holder for releasing the movement-preventing means.

82. In a machine for operating upon shoeheels, a traveling heel-holder movable lateral y of the path of advance, means for imparting the lateral movement to the holder, means for normally preventing such movement, and means controlled by the application of a heel to the holder for releasing the movement-preventing means.

83. In a machine for operating upon shoeheels, a tool, rotatable heel-holders movable in co-operation with the tool, means for preventing such movement, and a member rotatable with the holder and movable into engagement with the movement-preventing means to effect its release.

84. In a machine for operating upon shoeheels, a tool, a carriage movable toward and from the tool, a heel-holder rotatable upon the carriage, a spring urging the carriage toward the tool, a lock joining the carriage to the turret to maintain the holder against the force of the spring, and means acted upon by the holder for releasing the carriage.

85. In a'machine for operating upon shoeheels, a tool, a rotatable turret, a series of heelholders each movable upon the turret toward and from the tool, and means controllable by the application of a heel to each holder for permitting such movement of said holder.

86. In a machine for operating upon shoeheels, a tool, a rotatable turret, a series of carriages movable upon the turret toward and from the tool, a holder mounted upon each carriage and having relatively movable heel-clamping members, and means for locking each carriage upon the turret at a point removed from the tool, a clamping member of each holder having a portion contacting with the locking means to release the carriage.

8'7. In a machine for operating upon shoeheels, a tool, a rotatable turret, a series of carriages movable upon the turret toward and from the tool, a holder mounted upon each carriage and having relatively movable heel-clamping members, a locking member movable upon each carriage, and a retaining member fixed to the turret for engagement by the locking member, the locking member being movable by one of the clamping members to release it from the retaining member.

88. In a machine for operating upon shoeheels, a tool, a rotatable turret, a series of carriages movable upon the turret toward and from the tool, a holder mounted upon each carriage and having relatively movable heel-clamping members, means for locking each carriage upon the turret upon a point removed from the tool, a rotatable holder mounted upon each carriage and having a movable heel-clamping member and a relatively fixed heel-clamping member, a

locking member movable upon each carriage, and a retaining member fixed to the turret for engagement by the locking member, the movable clamping member having a portion acting during its rotation upon the locking member.

89. In a machine for operating upon shoeheels, a tool, a rotatable turret, a series of carriages movable upon the turret toward and from the tool, heel-holders rotatable upon each carriage, each holder having an annular flange, a hook pivoted upon each carriage for retaining engagement with the turret, and a rod rising from the hook and receiving contact of the holderflange.

90. In a machine for operating upon shoeheels, a movable tool, a rotatable turret, a plurality of heel-holders movable upon said turret toward and from the tool, means for controlling the movement of the holders with respect to the tool, and means for temporarily locking the holders out of co-operation with the tool.

91. In a machine for operating upon shoeheels, a movable tool, a rotatable turret, a plurality of holders rotatable upon the turret and movable on said turret toward and from the tool, means fixed relatively to the turret for controlling the movement of the holders with respect to the tool, and means carried by the turret for temporarily locking the holders out of co-operation with the tool.

92. In a machine for operating upon shoeheels, a movable tool, a rotatable turret, a plurality of holders rotatable upon the turret and movable on said turret toward and from the tool, the holders being carried by the turret through loading and operating positions, means for removing the holders from co-operation with the tool in the loading position and permitting means for locking the holders out of'co-operation with the tool in the operating position.

93. In a machine for operating upon shoeheels, a movable tool, a rotatable turret, a plurality of holders rotatable upon the turret and movable on said turret toward and from the tool, the holders being carried by the turret through loading and operating positions, means made effective in the rotation of the turret for removing the holders from co-operation with the tool in the loading position and permitting such cooperation in the operating position, and means dependent upon the absence of a heel in position on a holder for locking such holder out of cooperation with the tool in the operating position.

94. In' a machine for operating upon shoeheels, 2. tool, a holder traveling continuously in the operation of the machine to present a contained heel to the tool, and a heel-support extending along the path of the holder, said support being arranged to direct into the holder a heel moved over it by the operator, the support being inclined to generally correspond to the inclination of the heel-seat-end of the heel in the holder.

95. In a machine for operating upon shoeheels, a tool, a holder traveling continuously in the operation of the machine to present a contained heel to the tool, a heel-support extending along the path of the holder, said support being arranged to direct into the holder 9. heel moved over it by the operator, the support being inclined to generally correspond to the inclination of the heel-seat-end of the heel in the holder, and means arranged to adjust the angle of support to adapt it for use with different types of heels.

96. In a machine for operating upon shoeheels. a tool, a holder traveling continuously in the operation of the machine to present a contained heel to the tool, a heel-support extending along the path of the holder, said support being arranged to direct a heel moved over it by the operator into the holder, the support being inclined to generally correspond to the inclination of the heel-seat-end of the heel in the holder, means arranged to adjust the angle of support to adapt it for use with different heels, and an index-point and scale-holder movable relatively to each other upon variation of the angle of the support, the scale-holder being arranged to receive scales graduated to correspond to groups of heels having different pitches.

97. In a machine for burnishing the top-lifts of heels, a movable burnishing tool, a rotatable turret cooperating with the tool, a series of heelholders carried by the turret and having inclined tables, and a platform past the inner edge of which the tables are successively advanced, said platform being inclined to generally correspond to the inclination of the heel-seat-ends of heels in the holders.

98. In a machine for burnishing the top-lifts of heels, a movable burnishing tool, a rotatable turret co-operating with the tool, a series of heel-holders carried by the turret and having inclined tables, a platform past the inner edge of which the tables are successively advanced, said platform being inclined to generally correspond to the inclination of the heel-seat-ends of heels in the holders, a pivotal mounting for the platform, and means arranged to hold the platform at different angles upon its mounting.

99. In a machine for operating upon shoeheels, a tool, a holder traveling to present a heel to the tool, said holder having a heel-clamping member variable in its angular position, and means past which the holder travels for limiting the angular movement of the clamping member.

100. In a machine for operating upon shoeheels, a tool, a holder traveling to present a heel to the tool, said holder having a heel-clamping member variable in its angular position, means traveling with the holder for maintaining the clamping member at a predetermined limit in one direction, and means past which the holder travels for limiting the angular movement of the clamping member to a predetermined extent in the opposite direction.

101. In a machine for operating upon shoeheels, a tool, a holder traveling to present a heel to the too], said holder having a tread-abutment and an opposite heel-seat-end-engaging table, the table being pivotally mounted upon the holder and having its engaging surface inclined to the engaging surface of the abutment, means for normally maintaining the table in position to dispose the engaging surfaces at an angle different from that between the tread and the heel-seatend surfaces of a heel to be clamped and means for limiting the angular movement of the table to one in,which the angle between the engaging surfaces is substantially that of the angle between the engaged surfaces.

102. In a machine for operating upon shoeheels, a tool, a holder traveling to present a heel to the too], said holder having a heel-clamping member variable in its angular position, means past which the holder travels for limiting the angular movement of the clamping member, and

means arranged to vary the position of the limiting means.

103. In a machine for operating upon shoeheels, a tool, a holder traveling through a loading position and through an operating position, said holder having a heel-clamping member variable in its angular position, and means effective throughout the loading travel of the holder for limiting the angular movement of the clamping member.

104. In a machine for burnishing the top-lifts of heels, a movable burnishing tool, a rotatable turret, a series of heel-holders mounted upon the turret and each having a pivoted table free to tilt during the application of a heel by the operator, and a stop member into engagement with which a portion of the table may tilt during its travel and upon such application of a heel.

105. In a machine for burnishing the top-lifts of heels, a movable burnishing tool, a rotatable turret, a series of heel-holders mounted upon the turret and each having a pivoted table, means carried by each holder to limit the tilting movement of the table, and means common to the holders with which the limiting means contacts.

106. In a machine for burnishing the top-lifts of heels, a movable burnishing tool, a rotatable turret, a series of heel-holders mounted upon the turret and each having a pivoted table, means adjustable in position upon each holder to variably limit the tilting movement of the table, and. a stop member into engagement with which a portion of the table may tilt during its travel.

107. In a machine for burnishing the top-lifts of heels, a movable burnishing tool, a rotatable turret, a series of heel-holders mounted upon the turret and each having a pivoted table, a loading platform past which the holders travel, means arranged to vary the angular position of the platform, and a stop member limiting the tilting movement of the tables and movable un der the influence of the platform.

108. In a machine for burnishing the top-lifts of heels, a movable burnishing tool, a rotatable turret, a series of heel-holders mounted upon the turret and each having a pivoted table, a loading platform past which the holders travel, means arranged to vary the angular position of the platform, a stop-bar contacting with the platform and into engagement with which the tables may tilt, and a spring for maintaining such contact.

109. In a machine for operating upon shoeheels, a traveling heel-holder, a tool to which the holder presents heels, and ejecting means movable with and upon the holder and having a portion for contact with'a heel in said holder and arranged to yield bodily on the ejecting means.

110. In a machine for operating upon shoeheels, a traveling heel-holder, a tool to which the holder presents .heels, and a lever fulcrumed upon the holder and having an arm pivotally supported upon the lever and a spring urging one extremity of the arm about its pivotal connec tion to the lever toward a heel in the holder.

111. In a machine for operating upon shoeheels, a rotatable turret, a series of carriages movable upon the turret, a heel-holder mounted upon each carriage, a tool to which the holders successively present heels, a heel-ejecting member mounted upon each carriage, and a contact member into engagement with which the ejecting members are successively advanced by the rotation of the turret.

112. In a machine for operating upon shoeheels, a rotatable turret, a series of heel-holders mounted upon the turret and each having opposite clamp ng members with connecting rods, and a heel-ejecting member fulcrumed upon one of the rods of each holder.

113. In a burnishing machine, a tool mounted to turn about an axis and provided with a peripheral burnishing surface having a constant contour longitudinally of said axis duringan operation upon the work, and means arranged to vary the angle of such surface to the axis.

114. In aburnlshing machine, a tool mounted to turn about an axis and comprising a circumferential series of separate rigid sections furnishing at their outer ends a peripheral burnishing surface, and means arranged to vary the angle of the burnishing ends of the sections to the axis considered longitudinally thereof.

115. In a. burnishing machine, a tool mounted to turn about an axis and comprising a circumferential series of separate rigid sections furnishing at their outer ends a peripheral burnishing surface, and means acting simultaneously upon all the sections to vary the angles of their burnishing ends to the axis longitudinally thereof.

116. In a burnishing machine, a shaft, means for turning said shaft, a support carried by the shaft, and a series of segments pivoted upon the support to swing longitudinally of the shaft and placed in close relation to one another, said segments furnishing at their outer ends a substantially continuous burnishing surface.

117. In a burnishing machine, a shaft, means for turning said shaft, a support carried by the shaft, a series of segments pivoted upon the support and placed in close relation to one another, said segments furnishing at their outer ends a substantially continuous burnishing surface, and means arranged to fix the segments in different positions on the support.

118. In a burnishing machine, a shaft, means for turning said shaft, a support carried by the shaft, a series of segments pivoted upon the support and placed in close relation to one another, said segments furnishing at their outer ends a substantially continuous burnishing surface, and means arranged to tilt the segments upon the support thus varying the angles of their burnishing surfaces to the axis of the shaft.

119. In a burnishing machine, a rotatable shaft, means for turning said shaft, a support carried by the shaft, a series of burnishing segments pivoted upon the support, and an adjusting member engaging each of the segments at the opposite side of its pivotal point from the axis of rotation.

120. In a burnishing machine, a shaft, means for turning said shaft, a support carried by the shaft, a series of burnishing segments pivoted upon the support, and adjusting members engaging the segments at opposite sides of the pivotal points.

121. In a burnishing machine, a shaft, means for turning said shaft, a support carried by the shaft, a. series of burnishing segments pivoted upon the support, adjusting members engaging the segments at opposite sides of the pivotal points, a spring acting to force one of the members toward the segments, and manually operable means for adjusting the other member along the shaft.

122. In a. burnishing machine, a shaft, means for turning the shaft, a plate secured to the shaft and having a circular rib, burnishing sections pivoted upon the rib, and a member turning with