US2648852A

US2648852A - Platform laying and platform cover turning machine

Info

Publication number: US2648852A
Application number: US159213A
Authority: US
Inventors: John T Lancaster
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1950-05-01
Filing date: 1950-05-01
Publication date: 1953-08-18
Anticipated expiration: 1970-08-18

Description

Aug. 18, 1953 J. T. LANCASTER PLATFORM LAYING AND PLATFORM COVER TURNING MACHINE Filed May l 1950 J. T. LANCASTER Aug, 1s, 1953 PLATFORM I .AYING AND PLATFORM COVER TURNING MACHINE Filed May l 1950 SheetsSheet 2 Aug. lS, 1953 .1.1'. LANCASTER PLATFORM LAYING AND PLATFORM COVER TURNING MACHINE 6 Sheets-Sheet 5 Filed May l 1950 Aug. T8, 1953 J. T. LANCASTER 2,648,852

PLATFORM LAYING AND PLATFORM COVER TURNING MACHINE FiledMay 1, 195o e sheets-sheet 4 f1 van for:

7.' Lancaser @m w QN @A www;

Aug. i8, 1953 .1.1'. LANCASTER 2,648,852

PLATFORM LAYING AND PLATFORM COVER TURNING MACHINE Filed May L, 1950 6 Sheets-Sheet 5 J. T. LANCASTER Aug. S, 1953 PLATFRM LAYING AND PLATFORM COVER TURNING MACHINE 6 sums-sheet s Filed May l 1950 424 Eby. l2

fnvenor: .Jo/7n 7." Lancaster' l/ Patented Aug. 118, 195g UNITED STATES PLATFORM LAYING AND PLATFORM CDVEn 'rUaNrNo MACHINE 15 claims.

This invention relates to machines for use in the manufacture of shoes and it is herein disclosed as embodied in a machine for laying plat,- form units upon the insoles, such as sock linings, of platform` shoes and also for turning the platform covers of the shoes. TheseV operations are performed upon partially completed platform shoes which may consist of sock linings, uppers, and platform covers united by stitching.

It is an object of this invention to provide a simple machine for readily and conveniently performing the above-mentioned operations.

In accordance with a feature of the invention, the illlustrated machine is provided with a Slle support which is yieldable downwardly and with a plunger which presses a precemented platform unit down upon the precemented sock lining of the shoe to effect adhesion and also to move the shoe together with its support downwardly while suitably arranged tools turn the platform cover.

appear from the following detailed description of an illustrative embodiment of the invention, when considered in connection with the accompanying drawings, and will be pointed out in the appended claims.

In the drawings,

Fig. 1 is a side elevation of an illustrative machine embodying the invention, the machine being shown in its initial position;

Fig. 2 is a plan view showing the positions of the various parts of the machine at the completion of the cover turning operation;

Fig. 3 is a front elevation of the machine, partly in section;

Fig. 4 is a half-sectional rear elevation showing the turning instrumentalities at one side of the heel portion of the shoe at an intermediate stage of the cover turning operation;

Fig. 5 is a view similar to Fig. 4 showing the turning instrumentalities at the completion o f the operation;

Fig. 6 is an angular view showing the turning instrumentalities on the side of the machine opposite to that shown in Figs. 4 and 5;

Fig. Y is an angular view of a portion of the mechanism at the front of the machine;

Fig. 8 is arear elevation of the machine, partly in section;

Fig. 9 is an angular exploded view showing a portion of the mechanism;

Fig. 10 is a View similar to Fig. l, showing the positions of the various parts of the machine at the beginning of the cover turning operation, parts being shown in section;

Fig. l1 is a sectional view in side elevation of mechanism for automatically controlling the friction tools;l

Fig. 12 is a Sectional view in rear elevation taken on the. line XII-X11 of Fig. 11;

Fig. 13 is a sectional View in plan taken on the line XIII-XIII of Fig. 11; and

Fig. 14 is an angular view of a portion or" the mechanism shown in Figs. 1,1, l2, and lf3.

The illustrated machine has a shoe support in the form of a jack 2 0 (Figs. 1 and 10) upon which is secured an upstanding last` pin 22 (Fig. 8 shows the entire pin; Figs. 1 and 10 show only the collar portion of the pin) ,and a toe rest 2d for supporting, a shoe in inverted position. The shoe, as shown herein, consists of an upper U, a platform cover C, and an insole in the form of a sock. lining S (Figs. 4, 5,y and 8), all joined together by stitching and mounted upon a last L. The last pin 22 engages a thimble hole in the cone of the last L.

One of the functions of the machine is to press a platform P against the sock lining of the shoe, the adjoining surfaces of the platform and the sock lining having been precoated with cement to cause them to adhere upon pressure. Such pressure is applied by a tread-le-operated plunger or presser 26y (Figs. 1 and 10) having a heel plate 28, and a toe plate Sii'. The jack 26 yields downwardly under the force of the presser t until its downward movement is limited by a stop (later to be described), whereupon the force of the presser is exerted positively against the platform. During the downward yielding movement of the jack 20, the platform cover C is turned by ay plurali-ty of blade-like members or horns 32, 3.4, 3G, 38,' (Figs. 1 and 1(1), 40 (see also Fig. 2), and 4,2 which enter between the platform cover C and the upper U as the shoe moves downwardly and which are themselves held against heightwise movement. The upper edges of the horns are thin, but blunt enough to iacilitate the rolling of the platform cover over these edges as it is being turned;l and these edges are slightly bent out away from the shoe (as best shown on the horn 32,r Fig. 1) to enable them to clear the line of stitching at the base of the socalled crease between the platform cover and the upper. Associated with the horn 32 and overlying it is a friction tool 4d which engages the outside of the platform cover C and which is urged upwardly as the shoe moves downwardly to assist in the turning of the platform cover. Similar friction tools 4%, 48, 56, 52 and 5-1 are associated respectively with the horns 35, 3%, 38, 4i) and 42.

The jack 2c comprises a horizontal bar 58 (Figs. 1, 3, 8 and 1Q) extending lengthwise of the shoe and having adjacent to its heel end a split socket into which a depending shank 53 of the last pin 22 is clamped in a desired position of heightwise adjustment by a bolt 6E and nut 62. The bar 5t adjacent to its toe end is shaped to form a guideway (Fig. 3) for a slide 54 which can be clamped by a setscrew 65 in any desired position of longitudinal adjustment along the guideway. The slide 6d has a socket which engages a stem 63 depending from the toe rest 26|. A setscrew 68 (Fig. 3) secures the stem 63 in any desired position of heightwise adjustment in its socket. The bar 55 is secured upon the upper end of a plunger 'i0 (Figs. l, 9 and 10) which is slidable heightwise in a stationary sleeve 12 and is held against turning in the sleeve by a key lll. The sleeve 'S2 has a flange 'i6 which is secured by screws 'E3 upon the upper end of a frame or standard 80 which rests upon the floor. The plunger i3 is normally held up by a coil compression spring 82 which surrounds a stem 84 depending from the plunger lil. The lower end of the spring |52 abuts against an internal flange SG on the sleeve 'i2 and the upper end bears against the lower end of the plunger l. The upper position of the jack 2B under the influence of the spring 82 is determined by a stop 83 secured upon the lower end of the stem 84 and engageable with the bottom face of the sleeve '|2. Downward movement of the jack 2G is limited by a shoulder 90 formed upon a boss depending from the bar 56 and engageable with the upper end of the sleeve 12. The jack 2G can be latched in an intermediate position by a latch 92 pivotally mounted upon a fulcrum pin 91| which is secured in the frame Se. The latch 92 engages the stop BB' to hold the plunger 'H down against the force of the spring B2. The latch 92 is urged into latching position by a coil compression spring 96 and can be released by a handle |33.

The presser 25 (Figs. l, 2 and l0) as already mentioned, has a heel-engaging plate 28 and a toe-engaging plate 3d. The toe-engaging plate is slidably guided in the presser for longitudinal movement of adjustment in accordance with the length of shoe to be operated upon and it is clamped in its adjusted position by a screw |38 threaded into the toe plate and extending through a slot Ii (Fig. 2) in the presser. Secured in the presser 23 is an upstanding pivot pin |02 (Fig. 10) which is journaled in a bearing formed in the end portion of an arm |24. A collar |36 on the upper end of the pin |62 engages the upper end face of the bearing and a boss |08 on the presser 23 engages the lower end face of the bearing to prevent heightwise movement of the presser 26 relative to the arm H34. A handle extending from the collar m enables the operator to manipulate the presser by turning it about the axis of the pin |2 and also by swinging the arm HM about an upright pin H2. The arm ist has a bearing which engages the pin ||2 and which has upper and lower end faces engageable with lugs I lli and I6 respectively extending from a sleeve ie secured upon the upper end portion of a treadle rod |20. The pin H2, which serves as a pivotal support for the arm m, is carried by the lugs ||l| and H5. The sleeve H8 is secured upon the treadle rod |20 with provision for heightwise adjustment by a pair of clamping nuts |22 and |24 threaded upon the treadle rod. The treadle rod is normally held up by a coil compression spring |26 which surrounds it and which has its lower end abutting against a lug |23 on an L-shaped bracket |3 secured to the frame 8d and its upper end bearing against a collar |32 on the rod |26. The upwardly extending arm of the bracket |30 is channel shaped to loosely embrace the rod |2il; and the upper portion of the bracket has formed in it guideways engaged by guide lugs |33 (Fig. 2) extending laterally from the sleeve HB to guide and support the presser 2S in its operative downward movement.

The horn 32 (Figs. l and l0) operates upon the toe end of the platform cover C and it is dovetailed in a groove in a block |36 for heightwise adjustment with respect to the block; and the block is pivotally mounted for tilting movement of adjustment about a transverse horizontal screw |36 which can be tightened to clamp the block in adjusted position between two ears constituting an upward extension of an arm |38. The lower end portion of the horn 32 is notched to engage a head his of an adjusting screw which is threaded into the block |32l and which is manually turned to Vary the heightwise adjustment of the horn. The lower end of the arm |38 is forked to form a pair of ears which are secured by set screws |42 (Fig. 7) to a horizontal transverse shaft |44 (see also'Figs. 3 and 10) journaled in bearings formed upon arms |59 and |52 respectively of a bracket |54 secured upon a squared upper end portion |52` of the sleeve l2. Secured upon an end portion of the shaft |44 is a gear sector |58 which engages a worm |60 fixed on a horizontal longitudinally extending shaft |62 which is journaled in bearings |64 and |65 formed in an upstanding portion of the arm |52. The shaft |62 has a knurled head |63 (Figs. l, 6, and 10) by which it can be turned. The worm |0 does not extend the full distance between the opposing end faces of the bearings |64 and |66 and the shaft |52 is permitted to slide as well as to turn in said bearings. A coil compression spring |58 surrounding the shaft |52 and interposed between the opposing end faces of the bearing |54 and the worm |69 urges the worm in a heelward direction tending to bring the heelward end face of the worm into engagement with the opposing end face of the bearing |66. It is evident that when no shoe engages the horn 32, the spring |68, acting through the gear |58, will urge the arm |38 heelward to an initial stopped position determined by the engagement of the worm |66 with the bearing |66 (as shown in Fig. l) and that when a shoe is placed upon the jack and the jack is lowered to the position shown in Fig. 10, the upper of the shoe will cause the horn 32 to yield in a toeward direction as permitted by the spring. The horn 32 is thus held yieldingly by the spring |68 against the upper of the shoe to enable the horn to enter between the platform cover and the upper as the shoe descends. The inital position of the horn 32 can be adjusted toewardly or heelwardly by turning the knurled head The friction tool 44 (Figs. 1 and 10) is pivotally `ir'ic'uinted upon a 'p'in |16 'secured "in the ul'p'er end portion of a stem |752 which is adjustably clamped by 'a screw 11d in -a split bearing formed in the upper end of a lever |15. The 'stein |12 is inclined upwardly and heelwa'rdly from its bearing in the lever |16. The lever adjacent to its lower end (see also Fig. 7) is Vpivotally mounted upon transverse horizontal pin |18 secured bete/een a pair of vears cn the forward end of a lever lil/l which is fulcrumed for free rocking movement on the shaft |44 and extendbetween the ears formed bythe forked lower end portion of the arm |33 (Fig. 7). Y A leaf spring 22 clamped in a split lug |83 on the lever |32 and acting upon the lever i 215 normally vinai'ntains the friction tool `44 ina position determined by a earn |84 (see also Figs. 2 and 9) engaging a roll |86 on the lower rvend portion 'of the lever |l6.

The cam |84 is mounted on a spider arm |88 of a bracket '|90 (Figs. 7 and 9) which is rotatable about the axis of the sleeve 12 and which may be turned into and out of operative position by a handle N2. To provide for radial adjustnient, the cam |841. is carried not directly by the spider arm tot but b'y a dovetail slide |94 which is radially `slidable in the spider arm and which has an interlocking extension let (Fig. 9) also slidable in the same guideway. Formed in the e''tension |96 is an'arcuate slot |83 which is 'subf 1'itially coaxial 'with the spider bracket |90 and h is engaged by a roll 2536 on a pin '262. sed and depending from a slide 204. This `dovetailed 'for longitudinal sliding "adent in a guideway formed in an under porof the bracket i551, such adjustment being secured upon a shaft 2H). The

i haft 2 it? is journalle'd in bearings formed in the bracket arms |53 and |52 and it is operated by a link 2i2 the lower end of which is pivotally connected by a pin 2M to a gear 'sector 216 (to be mentioned later) secured by a pin 2|"8 to the shaft. The upper end of the link 2|-2 (Fig. 7) is pivotally connected by a pin 22? toa lug'222 extending frorn the arm |38. It is evident that as the shaft |62 is turned to adjust the horn 32 'corresponding opposite adjustment of the cam l il!! will oe effected through the linkage and gears 'above described. The cam 181i acts upon the lever |15 below the pin |18, and hence the cam is adjusted in a 'direction opposite to that of the horn 32 in order Vthat A`the adjustments yof 'the horn 32 and the 'friction tool 44 will take place in the same direction.

The bracket |50 consists of a central boss 'from which extends the spider arm |28 and from which also extend Vlive other spider arms (Fig. 2) later to be described. This boss |90 restsupon the upper surface of the flange 16 (Figs. 9` and l0) and is rotatable about the sleeve 12. The operative surface of the cam |84 is not circumferential but is spiral to enable the operator as he moves the handle |92 counterclockwise (as viewed `from above) to bring the cam from .an out-'ofthe-way position into an y operative posi-tion wherein it engages the roll |86 and swings the frictit'in tool 44 into an initialposition whereinit `wil1 be out of the way -of a shoe which is to be placed upon the jack 20. After the shoe has been placed upon the jack, and the jack has been rlowered vto the position shown in Fig. 10, the operlator turns the lspider in a clockwise direction to release lthe friction tool which, un'de'r 'the in- '6 viiuence ofthe spring |82, will come yieldingly into engagement with the 'exposed surface of the platform cover. l

The lever '|80 is fulcr'um'ed 'upon the shaft |44 and can rock with respect thereto. 'The end of the lever opposite to the end 'which carries the pin |18 has mounted therein a pin 224 (Fig. 7) which carries ian antifricti'on roll 228 (Figs. 1, 7 and 10). Depending from the bar 56 is a vlug 228 having an vunder surface which, when the jack 20 descends, engages the roll 226 and swings the lever |80 in a clockwise direction to 'raise 'the friction tool 44. A tension spring 230 having its lower end anchored to a stationary pin 232 (later to be described) and its upper -end hooked to the forward portion of the Ylever |80 holds the lever in an initial position (Fig. 1) determined by a stop (not shown). YWhen the jack 20 descends and the lug 2.28 engages the roll 226 (Fig. '10), the spring 230 will hold the vroll up yieldingl'y against the lug. The distances between the lshaft I 44 and the pins |18 and 224 respectively 'are Asubstantially equal and it is evident, therefore, that as the jack 20 descends the friction tool 44 will rise ata speed substantially equal to that of the descending shoe and thereby urge the outer portion lof the platform cover C upwardly while the platform cover is being drawn down vover the upper edge of the horn 32.

The horn 34 (Figs. 6 and 10) operates upon one side of the platform cover at the forepart of the shoe. It has a depending cylindrical shank 234 which turns freely in a Vsocket 236 formed in the upper end portion of a bar 238. A tension spring l240 having its upper `end hooked to the horn 34 and its lower `end anchored to the ubar 238 holds the shank 234 down in its socket and also holds the horn in a neutral or initial'angular position about the axis of its shank, from'which angular position the horn can readily turn to conform to the direction of that portion of 'the shoe surface which it engages. 'On vthe lower portion of the bar 238 is a hub 242 which is slidably keyed upon 'a horizontal "shaft 244 extending lengthwise ofthe shoe and having a Ykeyway -246. The shaft 2'44 is journal'ed in three bearings 248 (Fig. 6), '250, and 252, the bearing 248 being integral with a lug 254 extending laterally from 'the bracket arm "|52, and the bearings "250 and 252 being 'integral lrespectively with

arms

256 and 258 extending from a bracket 260 (see also Fig. 7) secured to a lateral face of the squared upper portion |56 ofthe sleeve 12. The shaft 244 is held against axial movement in its bearings by a retaining collar 262 secured upon its rear vend and a hub 264-secured upon its forward end. Depending from the hub 264 is a crank arm 268 (Figs. 3 and 7) having vin its lower end a slot 268 (Fig. 1) which fits loosely over the pin 232 (already-mentioned). This pin 232 extends through, and is fixed to, `the bracket arms |50 yand |52. Surrounding the pin 2-32 and .interposed between the bracketarrn |52 and the crank arm 266 is a coil compression spring 210 which urges the crank arm outwardly as rfar as permitted by a knurledstop `Anut 212. It is evident that, in the absence -of a shoe against the horn 34, the spring 210 `will cause the horn toassume a position determined vby the adjustment fof the vnut 212, and that, when a shoe isplaced upon the jack `and the .jack is depressed, the spring 210 will shorten and .permit the horn to yield outwardly as'it presses against the upper of the shoe ina Vposition to enter between the upper'a'nd the platform cover of tire-shoe.

'sion 214, of the horn sa.

rearwardly in accordance with the length .of the shoe and, for convenience, this adjustment is effected automatically by the forward and rearward adjustment of the horn 32. To this end the hub 242 has an extension 214 (Figs. l6 and 9) on the under side of which are formed rack teeth which intermesh with teeth on a gear sector 216 secured by a pin 218 to the shaft 2 L0. YIgnasmuch as the hub 242 is free to slide along the shaft 244, it is evident that the turning of the shaft 2I0 resulting from the adjustment of the horn 32 will serve to effect a similar adjustment, through the gear sector 216 and the rack exten- The friction tool 46 (Fig. 6)v is pivotally mounted upon a horizontal pin 280 with limited freedom ofheightwise swinging movement. The pin 280 is carried by an ear extending up from a short cylindrical rod 232 which can turn within a socket 284. A tension spring 2 86 anchored to the socket 284 and hooked to the rod 282 holds the rod down in its socket and also holds it in a neutral or initial angular position about its axis. The friction tool 46 can thus yield about two different axes to conform to the general plane of that portion of the shoe which it engages. The socket 284 constitutes the upper end portion of a bar 288 having, at its lower end, a hub 290 which is slidably keyed upon a horizontal shaft 292 extending parallel to the shaft 244. The shaft 292 is journaled in

bearings

294, 296 and 298 carried by a rocking frame comprising a longitudinal bar 380 and

rocker arms

382 and 364.

suitable collars

306 and 388 on thel end portions of the shaft 292 hold the shaft against axial movement. The

rocker arms

392 and 394 have hubs 3I0 and 3|2 by which they are pivotally mounted for swinging movement upon the shaft 244.

A torsion spring .3!4 acting on the shaft 292 to urge the friction tool 46tow'ard the shoe is normally opposed vby a cam mechanism which serves to hold the friction tool in an initial position. (Figs. 2 and 9) upon the outer end of a spider arm 318 which is integral with the spider bracket |98. The operating surface of the cam 3 l 6 is spiral with respect to the axis of the spider bracket I99, and it acts upon a cam roll 320 (Fig. 6) which is idly rotatable upon the lower end portion of a crank arm 322 depending from a hub 324 secured by a setscrew 326 to the shaft 292. Thus, when the handle |92 is moved to turn the spider bracket |98 clockwise, the friction tool 46 as well as the friction tool 44 will be released, and both friction tools under the influence of their respective springs will come yieldingly into engagement with the exposed surface of the platform cover.

The friction tool 46 is moved operatively up, while in yielding engagement with the platform cover, by mechanism comprising a lever 328 (Fig, 6) freely fulcrumed upon the shaft 2.44. The outer end of the lever 328 is integral with the bar 386, and the inner end carries an antifriction roll 330. A torsion spring 334 normally holds the lever 328 in an initial position wherein the roll 338 is up and the friction tool down, this initial position being determined by a stop (not shown). When the jack is lowered, a lug 332 on the jack will first engage and then depress the roll 339, thereby raising the friction tool.

Adjustment of the position of the friction tool 46 (Fig. 6) toewardly or heelwardly, in accord- This mechmism comprises a cam 3Il` ance with the size of the shoe, is effected autel.v matically by a pair of arms 336 extending out from the bar 238 and embracing the bar 288 to cause the keyed hub 290 to slide along the shaft 292 in accordance with the forward and rearward adjustment of the

horns

32 and 34 as previously described.

The horn 36 (Figs. 6 and 8) operates upon the platform cover at one side of the heel portion of the shoe. It has a depending flat shank 338 which is slidably mounted for heightwise adjustment in a block 346 having a suitable guideway for that purpose. A setscrew 342 (Fig. 8) holds the shank 338 in adjusted position. The block 349 is pivotally mounted for tilting movement of adjustment upon a horizontal clamping screw 344 carried on the upper end of a lever 345 having a hub 348 whereby the lever is freely fulcrumed upon the shaft 244. The lever 3,46 has a forked extension 350 below the hub 348 and embracing a transverse pin 352 (see also Fig. 8). A bracket 354 (see Fig. 9) has two rearwardly extending

arms

356 and 358 through which the transverse pin 352 extends and by which it is supported. A coil compression spring 369 surrounding the pin 352 and interposed between the bracket arm 353 and the lever extension 359 urges the lever extension outwardly to a stopped position `determined by a knurled nut 362 threaded on the outer end portion of the pin 352. When the jack 20 with a shoe thereon descends, the horn 36, the initial position of which is determined by the stop nut 362, can yield outwardly and the horn will be pressed against the upper of the shoe by the spring 360.

The friction tool 48 is mounted in an arcuate guideway formed in a block 364 and having a horizontal axis, the friction tool having a limited free tilting movement about said axis. A stop screw 365 in the block 364 engages a slot in the friction tool 48 to retain the friction tool in its guideway. The block 364 has a depending cylindrical shank 366 which can turn within a socket 368, a tension spring 310 being provided to hold the shank down in its socket and also to hold the shank in an initial angular position from which it can turn to conform to the plane of that portion of the shoe surface which it engages. The socket 368 is formed upon the upper end portion of a lever 312 having a hub 314 whereby the lever is freely fulcrumed upon the shaft 292. An arm 316, integral with the hub 314 and depending therefrom, carries a cam roll 318 which cooperates with a cam 380 (Figs. 2 and 9) on the end of a spider arm 382 integral with the spider bracket |90. A leaf spring 384 mounted on the rocker arm 364 urges the lever 312 inwardly to cause the friction tool 48 to press yieldingly against the platform cover. The operation of the cam 380 in holding the friction tool 48 in its initial position and in releasing it therefrom is similar to the operations of the cams S84 and 3|6, already explained. The operative upward movement of the friction tool 43 results from the upward movement of the shaft 232 upon which the hub 314 is mounted.

The horn 38 (Figs. l and 10) operates upon the platform cover at the heel end of the shoe. It has a depending shank 386 which is heightwise adjustable in a slot formed in a block 388, the shank being secured in adjusted position by a setscrew 390. The block 388 constitutes the upper portion of a lever 392 which is freely fulcrumed on a transverse pin 394 extending through and secured in the

bracket arms

356 and 358. The

lever 392 has a downward extension 396 depend!- ing below the pin 394, and this extension has an opening which loosely surrounds an eye bolt 398 extending lengthwise of the shoe and having its eye portion fitted around and supported by the pin 352 (Fig. 8). A coil compression spring 400 (Fig. 1) surrounding the eye bolt 3% and interposed between the lever extension 39S and a shoulder on the stationary bracket 354 normally holds the lever 392 in an initial position with the extension against a stop nut 4522 threaded upon the rear end portion of the eye bolt. When the jack 2U with a shoe thereon is depressed` the horn can yield rearwardly while pressing against the shoe upper as the spring 400 shortens.

The friction tool 5D (Figs. 1 and l0) is mounted for limited tilting movement upon a transverse pin 404 carried by a pair of ears on the upper end of a lever 40B. This lever `M16 is fulcrumed upon a transverse pin 411B secured in and extending across a pair of ears formed on the rear end of a lever Mil which is fulcrumed at' its mid-point on the transverse pin 394. As shown in Figs. 8 and 9, the lever 392 is branched or divided toY provide an opening through. which the lever i9 extends at the locality in which both levers are fulcrur'ned on the pin 39e. The forward end of the lever 4| (Fig. l) carries an antifriction roll 4t2 which is engaged by an abutment MA on the heel end of the bar 55u/hen the jack 2t descends. A torsion spring dit' surrounding the pin 394V urges the lever Mil ina clockwise direction as seen in Figs. 1 and 10' to hold the roll l2 yieldingly against the descending abutment till or up in a limiting position determined by a stop (not shown) when the jack 2li is up in its initial position. A leaf spring M8 secured in the lever el@ and pressing against the lever tilt urges that lever forward toward the heel end of the shoe to an initial position determined by a cam 629 which is engaged by a roll 432 on an arm e2@- integral with the lever M36 and depending below the fulcrum pin 5&8. The cam 429 is carried by a spider arm 426 which is secured to the spider bracket IQU- by screws 428 (Figs. 1 and 8), the cam being releasable by the handle W22' to permit the spring M8' to urgev the friction tool 50 yield-ingly against the platform cover. The operation of the friction tool 5t is similar to the operations of the friction too-ls 154i-, 4t, and 48, already described.

rlhe horn lit and the friction tool 52, as shown in Figs. 2, 4,- 5, and- 8, are respectively symmetri-` cal' to the horn 36 and the frictionl tool 48"; and, moreover, all the supporting and operating membersassociated with the horn it and the friction tool 52 are' symmetrical to corresponding membersl associated with the horn 35' and the' friction tool 15S. Said corresponding members, therefore, will not be described further; and where they appear on the drawings they will be indicated by primed reference numerals corresponding to the unprimed reference numerals of the members to which they are symmetrical.

The horn (i2 and the friction tool ii-ll (Figs. 2 and' 3') are respectively symmetrical to the horn 34 and the friction. tool 45'; and, moreover, except as below noted, all the supporting and operating members' associated with the hornY i2 and the friction tool 5A are symmetrical to corresponding members associated with the horn 3e and the friction tool dit'. Such corresponding members will not be described further, and those which appear, in the drawings will be-rv indicated by pri-med'-v reference. numerals corresponding te the Liz) unprimed reference numerals of the members to which they are symmetrical.-

The exception mentioned in the foregoing paragraph concerns the adjusting mechanism operated by the link 2 l2 (Fig. 1). Only one such link is needed, and it is conveniently connected to the gear sector 216' (Figs.` 3 and 9) rather than to the gear sector 216.

In operating themachine as so far described, the shoe is placed upon the jack 26 and the platform P is placed by hand upon the sock lining.` All parte of the machine are in their initial positions, the presser 26 being up and in an outof-t-he-wa! position to one side of the shoe. The operator now grasps the handle H0 and swings the presser 2t about the axes of the pins |02 and i i2 to position the presser and center it above the shoe as shown in Fig. 1. I-Ie then depresses the treadle, causing the heel plate Z8 and the toe plate 3-9 to descendV and. engage the platform P. Continued lowering of the treadle causes the spring 82` to yield. and permit the shoe and the jack 2@ to descend. from their initial positions. As the shoe descends, various localities i of the upper U will engage the horns 32, 3e, 35,

3.8, dll, and i-Z, causing their springs to yield while maintaining the horns pressed. against the upper so as to enterl within the platform cover C. The operator continues to depress the treadle until the jack ZB has comer down far enough for' thel latch 92.-' to snap over the stop 8S and hold the liaclf. down, as shown in 10; at this point he stops further depression of the tre'adle while maintaining enough pressure on it to `hold the presser 2t* clown against the platform P. The upper edges of the horns will now be substantially in contactwith. the base -of the crease between the platform cover C and the upper U,` in which positions they will be ready to begin the turning operation; and the rolls 226, 33B', M2, and 335i will be in substantial engagement with their respective` abutments on the jack 29". While the jack 2li is thus latched. in the position shown in Fig. 10, the operator swings the handle 32' clockwise (as seen from above) to release all theY friction tools ed, 46, 48, 5E),- 52, and 54 from the cams which hold them backaway from the shoe. Upon such release, the various springs associated with these friction tool-s will urge. the friction tools yieldingly against the exposed surface o'f the platform cover. The operator then depresses the treadle further.- Now, as the shoe descends, the platform cover Will turn over the upper'edges of the horns from the wrong-sideout position inl which it is shown in Figs. i and- 10 to an upstanding position wherein it is right side out; and the descending jack will force the rolls 2245', 33%)', M2, andl 336 down, thereby forcing the

friction tools

44, 46", 43, 5B, 52,- and 55 up and causing them to aid the horns by easing tl''platfrm cover up over the edges of the horns (see Figs. 4 and 5). Since the levers which transmit motion' from the rolls to the friction tools are all fulcrumed at their mid-points, the friction tools' Will move' up atthe same speed as that at whichk the edge of the platform cover which is' attached tosthe shoe moves down, the friction tools thus Working in continuous cooperation with' descend-ing" jack to turn the platform cover. M w

All the' whileY that the shoe is descending, the platform is pressed against-the sock lining witlf'ia yielding pressure depending upon the strength of the spring S2. This. pressure causes pre- V'lir'n-inary setting-.of the cement with wi'ii'cl'rv the adjoining faces of the platform and the sock lining have been coated.

Before the jack 20 has descended far enough for the shoulder 36 to engage the top surface of the squared upper end portion |56 of the sleeve 'i2 and thus positively stop the downward movement of the jack 26, the platform cover has been completely turned. Now, when the downward movement of the jack is thus stopped, the pressure exerted by the operator on the treadle will be transmitted positively through the platform and against the sock lining, greatly strengthening the preliminary adhesive bond already mentioned and insuring a rm and dependable attachment of the platform.

The operation is now complete, and the operator releases the treadle while holding back the latch 92 to let the various parts of the machine return to their initial positions. He then swings the handle |92 counterclockwise to cause the friction tools to be withdrawn from the shoe into out-of-the-way positions. He then grasps the handle l and swings the presser 25 to one side, and removes the shoe from the jack.

To adjust the machine for any particular type of shoe, the knurled head |53 is turned to bring the

horns

32, 34, and 42 and their cooperating

friction tools

44, 46, and 54 to their proper positions lengthwise of the shoe. The toe rest slide E4 also is adjusted along the bar 56 bringing it into proper position with respect to the length of the shoe, and the toe rest support stem 58 is adjusted heightwise in its socket to insure that the upper edges or the

horns

34 and 42 will be at the base of the crease between the platform cover C and the upper U when the shoe has been depressed to the position shown in Fig. 10. The shank 58 of the last pin 22 is then adjusted heightwise in its socket to a position which will insure an even distribution of pressure between the heel plate 28 and the toe plate 3U when the treadle is depressed. The remaining horns 32,

36, 33, and 46 are then adjusted to bring their upper edges at the base of the said crease when the shoe occupies the position shown in Fig. 10. Inasmuch as the heightwise positions of the friction tools are not critical, no provision for their heightwise adjustments is necessary.

Adjustment of the initial position of the horn 34 widthwise of the shoe is effected by turning the nut 212; and a similar adjustment of the horn 42 is effected by turning a nut (not shown) symmetrically related to the nut 212. Adjustment of the initial position of the horn 35 widthwise of the shoe is effected by turning the nut 362; and a similar adjustment of the horn 46 is effected by turning the nut 362. Adjustment of the initial position of the horn 38 lengthwise of the shoe is effected by turning the nut 402.

Automatic operation of the

friction members

44, 46, 48, 56, 52, and 54 by downward movement of the shoe supporting jack 20 can be e'ected by additional mechanism shown in Figs. 11 to 14 inclusive and now to be described. Such mechanism comprises an antifriction roll 43B positioned between two anges 432 depending from the spider arm 426, the roll 430 acting upon one of the flanges to turn the spider with its cams |84, 3I6, 380, 420, 386', and 3|6 in one direction and acting upon the other flange to turn the spider and cams in the opposite direction. One of the anges 432 has a lug 433 engageable with the roll 430 and extending into the space between the anges to avoid lost motion between the roll and the anges. The roll 430 is freely rotatable upon a pin 434 unstanding from a rocker arm 436 which has a hub 433 secured upon the upper end of an upright rockshaft 440 journaled in a bearing formed in the stationary bracket |34. A thrust collar 442 on the rockshaft 440 cooperates with hub 438 to hold the rockshaft against the heightwise movement, the thrust collar and the hub bearing against lower and upper surfaces on the stationary bracket |34. Secured upon the lower end of the rockshaft 440 is a hub 444 from which eX- tends a rocker arm 446 having a cam roll 448 mounted for free rotation upon a pin 444 at its outer end. Surrounding the rockshaft 44S is a torsion spring 45|] having its upper end anchored in the stationary frame 86 and its lower end secured to the rocker arm 446, the tendency of this spring being to urge the rockshaft 444 and its rocker arms in a counterclockwise direction (as seen from above).

The rockshaft 440 is operated by a release cam 452 and a restoring cam 453, both cams being movable with the stem 84 and engageable with the cam roll 448. The release cam 452, which serves to hold the rockshaft 446 in an initial position of rotation until the stem 84 has descended to a predetermined level and then suddenly to release the rockshaft to the action of the torsion spring 454, is slidable heightwise in a guideway formed in a block 454 integral with the stop 88. A cover plate 456 secured to the block l454 retains the cam 452 within the guideway. Interposed between the bottom of the guideway `and the lower end of the cam 452 is a compression spring 453 surrounding a stem 464 which depends from the cam and slides through a bore in the bottom of the guideway, the compression spring serving yieldably to hold the cam up in a normal position determined by a stop nut 462 on the lower end of the stem. The upper portion of the cam 452 extends above the top of the block 454 and has a vertical restraining surface 464 (Fig. 14) engageable with the cam roll 448, a horizontal surface 456 along which the cam roll travels under the influence of the torsion spring 450, and a vertical surface 468 serving as a stop to limit the movement of the cam roll under the inuence of the torsion spring. As the shoe support 26 and with it the block 454 descend from their initial positions, the restraining surface 454 holds the cam roll 448 in opposition to the torsion spring 45) until the horizontal surface 466 permits the torsion spring to swing the cam roll into a position determined by the stop surface 468, such action of the torsion spring serving, through the roll 434, to swing the spider arms in a clockwise direction to release the

friction members

44, 46, 48, 56, 52, and 54 to the actions of their individual springs whereby the friction members are moved yieldably into engagement with the platform cover C. The releasing operation of the cam 452 is so timed as to take place when the shoe supporting jack 24 has descended to the position shown in Fig. 10 and the cover turning operation is about to begin.

After continued depression of the treadle has brought the jack 24 to its lowest point and the operation upon the shoe has been completed, pressure upon the treadle is released and the jack is permitted to rise under the influence of its spring 82. As the block 454 thus rises, the release cam 452 will rise with it until the hori- Zontal surface 466 encounters the cam roll 448, checking the upward movement of the cam and causing the spring 458 to be compressed. To

reset the release cam 452, the restoring. cam 453 f (which constitutes an upward extension of the cover plate 45E) has an inclined surface 410 (Fig. '14) engageable, as the restoring cam rises, with the cam roll 448 to push the cam roll across and out of the way of the horizontal surface 456 and thus permit the compression spring 458 to return the release cam to its normal position, with the cam roll against the vertical restraining surface 454. The restoring cam, in pushing the cam roll 443 across the horizontal surface M56, also reloads the torsion spring 450. A ange M2 on the restoring cam 453 affords additional support to the release cam i552` against the pressure of the cam roll 448.

It is evident that on a machine equipped` with the automatic mechanism just described, the latch 92 together with the handle 93 and its associated parts, and also the handle l92, are unnecessary and, if desired, can be omitted; and that the automatic mechanism enables the machine to perform its complete operation upon a single continuous depression of the treadle.

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

1. In a machine for use in the manufacture of shoes, a support for a partially completed platform shoe having an insole and an unturned platform cover, means for pressing a platform unit against the insole to cause precemented surfaces of the platform unit and the insole to adhere, means acting upon the shoe support for yieldinglv opposing the pressing means While permitting the pressing means to move the shoe and its support heightwise, a horn engageable with the platform cover to turn the platform cover as the shoe is thus moved heightwise, and a spring for yieldingly holding the horn against the outside of the shoe While the platform cover is being turned.

2. In a machine for use in the manufacture of shoes, a support for a partially completed platform shoe having an insole and an unturned platform cover, means for pressing a platform unit against the insole to cause precemented surfaces of the platform unit and the insole to adhere, means acting on the shoe support for yieldingly opposing the pressing means While permitting the pressing means to move the shoe and its supp-ort heightwise, means engageable with the platform cover to turn the platform cover as the shoe is thus moved heightwse, and a stop for holding the shoe support positively against the force of the pressing means when the I.- 7

turning of the platform cover has been completed, said stop thereby enabling the pressure between the platform unit and the insole to be increased and thereby complete the adhesion of cach to the other.

3. In a machine for use in the manufacture of shoes, a support for a partially completed platform shoe having an insole and an unturned platform cover, a guideway in which the shoe support is movable heightWise of the shoe, a presser engageable with a platform unit which has been placed upon the insole, means for forcing the presser against the platform unit to cause precemented surfaces of the platform unit and the insole to adhere, a spring acting on the shoe support to oppose the pressure applied by said forcing means, a horn sup-ported against heightvvise movement and engageable with the platform cover to turn the platform cover asthe shoe support moves along the guideway in remeans, a horn 14 spouse to the pressure of the forcing means, which movement of the shoe support isy permitted by the yielding of the spring, a second spring urging the horn in a horizontal direction toward the shoe, and an adjustable stop against which the second spring holds the. horn `in an initial position from which the horn can yield when engaged by the shoe.

4. In a machine for use in the manufacture of shoes, an upstanding last pin for supporting an inverted last on which is mounted a partially completed platform shoe having an insole and an unturned platform cover, a rest for supporting the forepart of the shoe and last, a common support for the last pin and the rest, a. guideway in which the support is movable heightwise, a plunger engageable With a platform unit which been placed upon the insole, means for forcing the plunger down against the platform unit to cause precernented surfaces of the platform unit and the insole to adhere, a spring acting on said support to oppose the pressure applied by the forcing means, and a plurality of horns supported against heightvvise movement and engageable within the platform cover to turn the platform cover as said support moves down its guideway in response to the pressure applied by the plunger.

5. In a, machine for use in the manufacture of shoes, an upstanding last pin for supporting an inverted last on which is mounteda partially completed platform shoe having an insole and an unturned platform cover, a rest for supporting the forepart of the shoe and last, a common support for the last pin and the rest, a guideway in which the support is movable heightwise, a plunger engageable with a platform. unit which has been placed on the insole, treadle operated means for forcing the plunger down against the plunger down against the platform unit to cause precemented surfaces of the platform unit and the insole to adhere, a spring acting on said support to permit the support to yield and thereby limit the initial pressure applied by the forcing movement and engageable. Within the platform cover to turn the platform cover as the platform unit and the shoe are forced down by the plunger, and a stop for limiting the downward movement of the common support and holding it positively against the pressure applied by the forcing means and thereby completing the. adhesion between the platform cover and the insole.

6. In a platform cover turning machine, an upstanding last pin for supporting an inverted last on which is mounted a partially completed platform shoe having an unturned platform cover, a rest for supporting the forepart of the shoe and last, a common support for the last pin and the rest, a guidevvay in which the sup-port is movable heightvvise, means for exerting downward pressure against. the shoe to move the shoe and the support down in a path determined by the guideway, a spring normally holding the support up and yieldable downwardly to the pressure exerting means, a horn engageable Witln in the platform cover at each end 'of shoe, means for holding the horns up to enable them to turn the platform cover as the shoe movesdown, a friction tool associated with each horn and engageable with the outer surface of that portion of the platform cover which over-lies its associated horn, and connections through which the sup-port in its downward movement causes I the friction tools to move up in engagement with supported against heightwise l the platform cover to assist the horns in turning the platform cover.

7. In a platform cover turning machine, a support for a partially completed platform shoe having an unturned platform cover, a guideway in which the shoe support is movable heightvvise of the shoe, a, spring normally holding the support in an initial position in its guidevvay, means for moving the shoe and the shoe support in a path determined by the guideway, a horn held against heightwise movement and engageable Within the platform cover, said horn having an operative edge over which the platform cover must turn as the shoe is thus moved from its initial position, a friction tool engageable with the outer surface of that portion of the platform cover which overlies the horn, a spring urging the friction tool against the platform cover, means for moving the friction tool to cause it to push the platform cover toward the operative edge of the horn and thereby assist the horn in turning the platform cover, releasable means normally opposing the second-mentioned spring to hold the friction tool in an out-of-the-way position away from the platform cover, and a latch for holding the shoe support in an intermediate position in its guideway to enable the operator to release the friction tool to the operation of its spring after the horn has entered within the platform cover.

8. In a platform cover turning machine, a support for a partially completed platform shoe having an unturned platform cover, a guideway in which the shoe support is movable heightwise of the shoe, means for exerting pressure upon the shoe to cause the shoe support to move along its guideway, a plurality of horns held against heightvvise movement and engageable within the platform cover, each horn having an operative edge over Which the platform cover must turn as the shoe is thus moved, a friction tool associate-:i with each horn and engageable with the outer surface of that portion of the platform cover which overlies its associated horn, means for yieldingly holding the friction tools in operating positions against the platform cover, means for operating the friction tools to cause them to push the platform cover toward the operative edges of their associated horns and thereby to assist the horns in turning the platform cover, and a common means for moving the friction tools from their operating positions to out-ofthe-Way positions wherein they avoid interference with a shoe which is to be placed upon or removed from the support.

9. In a platform cover turning machine, a piurality of tools engageable within an unturned platform cover of a partially completed platform shoe at spaced localities about the periphery of the shoe, each tool having an operative edge over Which the platform cover is to be turned, means for effecting relative movement between the shoe and the tools to cause the platform cover to be turned over the operative edges of the tools, a friction tool associated With each of the firstmentioned tools and engageable with the outer surface of the platform cover, a spring for holding each friction tool in operating position against the platform cover, means for operating the friction tools to cause them to push the platform cover toward the operative edges of the rst-mentioned tools and thereby assist the firstmentioned tools in turning the platform cover, and cam operated mechanism for simultaneously moving the friction tools from operating positions to out-of-the-way positions.

10. In a platform cover turning machine, a support for a partially completed platform shoe having an insole and an unturned platform cover, a pair of members engageable with opposite surfaces of the platform cover for turning the platform cover, means for causing one of said turning'members to press the platform cover against the other turning member, means for effecting relative movement between the shoe and the turning members to cause the platform cover to be turned, and interconnected means for simultaneously adjusting the positions of said turning members lengthwise of the shoe.

11.`In a platform cover turning machine, a support for a partially completed platform shoe having an insole and an unturned platform cover, a horn engageable within the platform cover, a friction tool engageable with the outer surface of that portion of the platform cover which overlies the horn, a spring for pressing the friction tool against the platform cover, means for effecting relative heightwise movement between the shoe, the horn, and the friction tool to cause the platform cover to be turned over the horn, and interconnected means for simultaneously adjusting the positions of the horn and the friction member lengthwise of the shoe.

12. In a platform cover turning machine, a support for a last on which is mounted a partially completed platform shoe having an insole and an unturned platform cover, a horn engageable Within the platform cover at the toe end of the shoe, a pair of horns engageable with-in the platform cover at the respective sides of the forepart of the shoe, a plurality of friction tools cooperating respectively with the horns, each friction tool being engageable with that portion of the platform cover which overlies .its associ- Y ated horn, a spring for pressing each friction tool against the platform cover, means for effecting relative heightwise movement between the shoe, the horns, and the friction tools to cause the platform cover to be turned over the horns, and interconnected means for simultaneously adjusting the positions of said horns and said friction tools lengthwise of the shoe to adapt them for operation upon shoes of different lengths.

13. In a platform cover turning machine, a support for a partially completed platform shoe having an unturned platform cover, a guideway in which the shoe support is movable height- Wise of the shoe, means for exerting pressure upon the shoe to cause the shoe support to move `along its guideway, a horn at each end of the shoe held against heightvvise movement and engageable within the platform cover, each horn having an operative edge over Which the platform cover must turn as the shoe is thus moved, a friction tool associated with each horn and engageable with the outer surface of that portion of the platform cover which overlies its associated horn, means for operating the friction tools to cause them to push the platform cover toward the operative edges of their associated horns and thereby to assist the horns in turning the platform cover, and a common means for adjusting the associated horn and friction tool at one end of the shoe toward or from the associated horn and friction tool at the other end in accordance with the length of the shoe.

14. In a platform cover turning machine, a support for a partially completed platform shoe having an unturned platform cover, means for moving the support with a shoe thereon heightwise from and to an initial position, a turning horn engageable with the platform cover to turn the platform -cover as the shoe is thus moved from initial position, a friction tool cooperating With the horn to turn the platform cover, and means actuated by the shoe support for automatically moving the friction tool into an operative position of engagement with the platform cover upon movement of the shoe support from initial position and for automatically moving the friction tool into an out-of-the-way position upon return of the shoe support to initial position.

15. In a platform cover turning machine, a Isupport for a partially completed platform shoe having an unturned platform cover, means for moving the support with a shoe thereon to and from an initial position, a turning horn engageable With the platform cover to turn the platform cover as the shoe is thus moved from initial position, a friction tool cooperaing with the horn to turn the platform cover, a spring` for urging the friction tool into operating position against the platform cover, a cam for holding the friction tool away from the platform cover, and means actuated by the shoe support for releasing the friction tool from said holding cam to permit the spring to move the friction tool into operative position when the shoe support has moved a predetermined distance from its initial position.

JOI-IN T. LANCASTER.

References Cited in the flle of this patent UNITED STATES PATENTS Number Name Date 460,526 Edgerly Sept. 29, 1891 584,590 Horton June 15, 1897 702,196 Gardner June 10, 1902 2,223,474 Willmott Dec. 3, 1940 2,422,737 Lawson June 24, 1947