US2733461A - gross - Google Patents

Description

Feb. 7, 1956 c. J. GROSS 2,733,461

MACHINES FOR PRESSING SOLES ON SHOE BOTTOMS Filed March 17. 1952 10 Sheets-Sheet 1 jm/en for Charles J. Gross Feb. 7, 1956 c. J. GROSS 2,733,451

MACHINES FOR PRESSING SOLES 0N SHOE BOTTOMS Filed March 17, 1952 10 Sheets-Sheet 3 fig. 3

29a 302 300 aoz 300 IIIIIIIIHIIHHIII HHIHHJH llllllllllmlllllll 3/4 3/2 1 155 j/NJ/Z yo 320 /42 i 320\ 322 [nvenior Charles J Gross H I B h: is Atijney Feb. 7, 1956 c. J. GROSS 2,733,461

MACHINES FOR PRESSING SOLES ON SHOE BOTTOMS Filed March 17, 1952 10 Sheets-Sheet Invenfor Char/es J Gross may Feb. 7, 1956 c. J. GROSS 2,733,461

MACHINES FOR PRESSING SOLES ON SHOE BOTTOMS Filed March 17, 1952 10 Sheets-Sheet 5 fiwenfar Charles J Gross rzey Feb. 7, 1956 c. J. GROSS 2,733,461

MACHINES FOR PRESSING SOLES ON SHOE BOTTOMS Filed March 17, 1952 10 Sheets-Smut 6 mlllll [n venzor Feb. 7, 1956 c. J. GROSS 2,733,451

MACHINES FOR PRESSING SOLES ON SHOE BOTTOMS Filed March 17. 1952 10 Sheets-Shea; 7

( aw w 33 47 7 A lglll entor Charles Grass jg V I an H By is litfiorhey 433 34a Feb. 7, 1956 c. J. GROSS 2,733,461

MACHINES FOR PRESSING SOLES ON SHOE BOTTOMS Filed March 17, 1952 10 Sheets-Sheet 8 m wv [n venzor Charles J Gross Feb. 7, 1956 c. J. GROSS 2,733,461

MACHINES FOR PRESSING SOLES ON SHOE BOTTOMS Filed March 17, 1952 10 Sheets-Sheet 10 United States Patent MACHINES FOR PRESSING SOLES 0N SHOE BOTTOMS Charles J. Gross, Melrose, Mass., assignor to United Shoe Machinery Corporation, Flermngton, N. J a corporation of New Jersey Application March 17, 1952, Serial No. 276,952

36 Claims. (Cl. 12-36.8)

This invention relates to machines for pressing soles on shoe bottoms and particularly to machines for use in the cement attachment of soles to shoes.

Objects of the invention are to provide a multi-station machine having inflatable pads with automatic mechanical means for applying pressure to a shoe and controlling inflation of the pad; also to provide in such an organization suitable safeguards to guide the operator and to insure proper and safe operation of the machine.

In the illustrated machine, a turret carrying four pad boxes is provided, each pad box supporting an inflatable pad having an inflating valve and a deflating valve and each pad being associated with screw means for pressing a shoe on the pad, there being provided at a loading station power-operated means for operating each screw means in turn to apply a predetermined pressure to the shoe and, by reversal, to relieve pressure from the shoe, there being also at the loading station means for inflating each pad in turn to a predetermined pressure through the inflating valve and means for opening the deflating valve of each pad in turn.

Means is provided for holding shoe and sole gages in operative position, with manually operated means for releasing the gages at any time and means for automatically releasing the gages controlled by inflation of the pad.

Manually controlled means is provided for initiating the action of the power-operated means for applying pressure to the shoe and inflation of the pad, and in case such application of pressure is unsatisfactory manually operated means is provided for releasing the pad pressure and then releasing the power-applied pressure on the shoe, operation of said manually operated means being conditioned on proper indexing of the turret. The turret being properly indexed, operation of the manually operated means causes deflation of the pad at the loading station and power operation of the screw means to release pressure on the shoe.

When pressure has been properly applied to the shoe, the turret may be indexed provided the gages have been released, provided the pad-inflating means is in operative position, and provided the power-operated means for turning the screw means has been disconnected.

These and other features of the invention will appear more fully from the following description when read in connection with the accompanying drawings and will be pointed out in the appended claims.

In the drawings,

Fig. 1 is a front elevation of the machine;

Fig. 2 is a side elevation, partly in section, showing the screw means on the turret for applying pressure to the shoe and mechanism for operating the screw means;

Fig. 3 is an elevation of mechanism shown in Fig. 2 taken from the opposite side;

Fig. 4 is a front elevation of parts shown in Fig. 2;

Fig. 5 is a sectional view of the screw-reversing mechanism shown in Fig. 4;

Fig. 6 is a front view, partly in transverse section, of parts shown in Fig. 2;

Fig. 7 is a view of a treadle-controlled valve shown in Fi 2;

liig. '8 is a front view of the inflating and deflating valves;

Fig. 9 is a sectional view of the inflating valve;

Fig. 10 is a side elevation, partly in section, showing the inflating nozzle and mechanism connected therewith;

Fig. 11 is a plan view, partly in section, of the control mechanism at the front of the machine; 1

Fig. 12 is a detail of parts shown in Fig. 11;

Fig. 13 is a front elevation of control mechanism at the front of the machine, the front casing being omitted;

Fig. 14 is a diagrammatic plan view of the power connections to the turret and the screw means;

Fig. 15 is a diagrammatic view of the fluid-pressureoperated means for controlling the power operation of the means for applying pressure to the shoe and the inflation of the pad;

Fig. 16 is a plan view, partly in section, of the clutch for controlling indexing of the turret;

Fig. 17 is a front elevation, partly mechanism for rotating the turret; and

Fig. 18 is a plan view of mechanism shown in Fig. 17.

As illustrated in Fig. 1, the machine has a turret 20 carrying four pad boxes 22, the turret being mounted on ball bearings 23, 23 (Fig. 2) for rotation about a vertical post 24 secured to a base 25. Secured to the turret 20 is a ring gear 26 meshing in a l to 4 ratio with a gear 28 (Fig. 1) which is driven through a one-revolution clutch 30 from a shaft 31 (Fig. 14) connected by a belt 32 to a motor M. The clutch 30 may be of the type disclosed in United States Letters Patent No. 2,202,005, granted May 28, 1940, on the application of E. A. Holmgren, and is set to connect the motor M to the turret by leftwise movement of a handle 33 (Fig. 1). The handle is fixed to a vertical shaft 34 having at its lower end an arm 35 connected by a link 36 to the clutch 30, a pull on the link serving to set the clutch.

A pump P driven by the motor M (Fig. 14) through the belt 37 supplies air under pressure to a reservoir R (Fig. 15) through a pipe 38. The pad boxes 22 are each provided with gage mechanism such as that disclosed in United States Letters Patent No. 2,558,847, granted July 3, 1951, upon the application of Helge Gulbrandsen et al. At the front of the machine is a vertical bar 40 (Fig. .2) arranged for longitudinal movement in a bracket 41 and having at its upper end a T-slotted head 42. The bar 40 is normally lifted by a compression spring 43 arranged between the head 42 andthe bottombf a counterbore in the bracket 41. Associated with each gage mechanism carried by the turret is a bar 44 parallel to the bar 40 and having a T-head 46, these T-heads being engaged in turn with the T-slotted head 42 on the bar 40 when the bars 40, 44 are in axial alinement. The bar 44 is arranged for longitudinal movement in a counterbore in a bracket 47 carried by the turret 20 and is sustained by a compression spring 48 in a counterbore in the bracket and confined between a flange on the bar 44 and the bottom of the counterbore, its upward movein section, of the ment being limited by engagement of the head 46 with the bracket 47. Should the spring 48 fail to lift the bar 44, the head 46 will, in its passage toward the load ing station, engage a. plate 49 (Fig. 13) supported on the frame, curved from the axis of the turret as a center and having its left-hand end bent downwardly so that.

When the bar 40 is depressed to allow the gages to ena 3 gage a sole on a pad, fastener 50 is in the path of an arm 51 (Fig: 13) secured tothe shaft 34' so' that theshaft cannot be turned far enough in its clutch-tripping direction to operate the clutch-tripping arm 35 and link 36; When the gages are out of operation, the arm 51 can pass under the collar and, except for other conditions to be explained, the indexin clutch may be tripped. V p

The bar 40 is depressed to permit operation of the gages at the loading station to locate a sole on a pad 52 by means best indicatedin Fig. 15 The lower end of thebar 40" carrier a piston 53" in cylinder 54. The cylinder is supplied with compressedair from the reservoir R through pipes 56', 5-8" and 59 leading to a valve V1 having a plunger depression of which against a spring 62 opens the valve. A-treadle T-i' is connected by a-link 64 to alever 66' one end of which is pivoted to the bar 4'0 and the other end lies over the plunger 6%. Depression of the treadle opens the valve, allowing air to pass first m a chamber 70 and thence to the cylinder 54 above the piston and causing the piston and bar 40 to be depressed; The bar'4'0'is held depressed by a latch 72 en a ing a notch 73 in. the bar. When the treadle T-1 is released the valve V-1 is closed by the spring 62 and the air in the cylinder 54 and chamber 70 passes out through a restricted passage 74* controlled by a screw 75.

The latch 72 is pivoted at 76 to the bracket 41 and above the pivot is an arm 78 of the latch which is impelled by a compression spring 80", located between the arm and the bracket, to engage' the notch 73. Below the pivot 76 is an enlarged arm 82- of the latch which is bored to receive a plunger 84 engaging a strut 85 on a front panel 86 of the frame; the bracket 41 being secured to the panel. The latchj72' may be released by air pressure supplied by a tube 87 to the plunger 84.

The latch 72 may be released rnanually at any time by downward pressure on a handle '88 (Fig; 2 connected to a vertical rod 90 sustained by a spring 92 on the rod between the handle 88 and the bracket 41, the lower end of the rod having a slot94 engaging a pin in an arm 96 of the latch.

The mechanism for applying pressure to the shoe is similar to that disclosed in United States Letters Patent No. 2,621,348, granted December 16', 1952, in the nameof the present applicant. The operator, after having vplaced a sole on the pad 52 at the loading station, depresses the treadle T-I to bring the gages into engagement with the edge face of the sole. He then places a shoe on the sole which also is positioned on'the sole by the gages. He thenswingsa' bail 1 60 (Fig. 2') over the shoe against a tension spring and brings an abutment 104 (Fig. l) on the bail over the rear end of the last. This movement of the bail Will,- through a rod 106, move a hail 108 to locate a toe abutment 1H9 thereon over the toe of the shoe. As shown in Fig. 2, each leg of the bail 10 0 is pivoted a't 11 0 to a not 112 and each leg of the bail 108 is pivoted at 114 to a similar nut 11 6. Each nut has a projection 11S slotted to engage an up right on a yoke 122 depending from the turret 20, the nuts being thus prevented from turning. Screws 124 and 126', which respectively carry the nuts 1 12 and 116, are rotatably mounted in the yoke 12 2 carried by the turret and are-provided' -at their lower ends with tooth clutches 128, 130 which cooperate at times with corresponding toothclutches 132, 134 which are normally rotated in a direction to release pressure on the shoe but can be reversed to rotate the screws in a direction to apply pressure to the shoe; As shown in Figl 3', both clutches v132, 134 are driven in the same direction by a gear 136 meshing with a gear 138 connected to the clutch 132 and a gear moraine-create the clutch 1 34. The gear 136 isoii a shaft 142 suitably journaled in the frame carrying a sprocket connected by a sprocket chain 146th a sprocket 148 (Fig. 5) on a shaft 150. The

4, shaft is mounted on ball bearings in a casing 151 and carries a" gear 152 meshing with twobevelgears 154-, 156 both loose on a shaft 158 on which is asprocket 160, .this sprocket being connected by a chain 161 to a sprocket 162 which is driven by the motor M (Fig. 14). The gears 154, 156 (Fig. 5) are held in place by nuts 163 threaded on the hubs of the gears, the hubs having ball bearings 164.

Splined on the shaft 158' (Fig. 5) is a collar 166 hav ing on one side teeth 168 to engage teeth on the gear 154 and on the other side teeth no to engage teeth on the gear 156. A groove 172' in" the collar" 166 is engaged by a yoke 174 on a shaft 176 which carries also an angle lever having arms 178,- 179. Movement of the arm 178 will slide the collar 166 on the shaft 158 and reverse the direction of rotation of the sprocket 148 and hence that of the clutches 132, 134.

The arm 178 is bifurcated at its upper end, the bifurcatio'ns having holes in which is journaled a member 1'80 flattened between its ends. Through this flattened portion a piston rod extends, the right-hand porti'on' lS i of the rod being larger than the left-hand portion 1'86 (Fig. 5). At the junction of the two sizes of the rod is a set nut and nut 188 which bears on the member 180. On the end of the smaller portion 186 of the rod is a nut and set nut 1'90 and between the nuts and the member 180 is a compression spring 192 Also between the bifurcated end of the arm 178 and the head of a cylinder 194 is a compression spring 196.

The cylinder 194 is pivoted at 198 to a bracket 200 which is secured at 202 to the casing 151 of the reversing mechanism. Air is admitted to the cylinder 194 through a flexible pipe 204 to move the piston 206 in the cylinder to the right, the piston rod then actingthrough the spring 192 to move the arm 17S clockwise and shift the collar 166 to disengage the teeth 168 and engage the teeth with the teeth on the gear 156', thus reversing the direction of rotation of the sprocket 148 and hence the direction 'of rotation of't he clutches 132, 134 to screw the nuts down.

Engagement of the clutches is eifected by mechanism shown in Figs. 2, 4 and 6. When the anglerlever 178, 179 (Fig. 4)' moves clockwise as described to reverse the rotation of the clutches, the arm 1 79 pulls up on a link 203 pivoted thereto at 210. The lower end of the link has a slot 211 engaging a pin 212 on a lever 214 pivoted at 216 to the casing 151. The lever 214 has a roll 218' which lies in one or the other of two recesses 220, 221 in alever 222 pivoted at 224 to the casing 151 and bearing on a stem 226 of a valve 228 held closed by a spring 229. Between the recesses 22:), 221 is a projection 230 which is engaged by the roll 218 in its passage from one recess to the other to swing the lever 2'22 counterclockwise to open the valve 228, the'valve being held open by engagement of the lower end of the lover'- 222 with a latch lever 232 fulcrun'red at 234; The valve stem 226 has a port 236 which is open when the valve is closed to exhaust air from the flexible pipe 233 leading to a cylinder 240. The slot 211 in the link 2112' allows surficient movement of the yoke 174 to operate the reversing mechanism before the valve 228 is opened. 7

The cylinder 24! has a piston rod-242 pivoted at 244 to a lug 245'on the casing 151, the cylinder moving up and down with respect to its piston in response to air pressure introduced through the valve 228" from a pipe 24-6 and passing, when the valve is open, through the flexible pipe 238, to the cylinder 240 above its piston causing the cylind'er to move up. Asthe cylinder approaches its limit of upward movement it engages a tappet 248 on the latch lever 232 and releases the lever 222, permitting the valve 228 to be closed by its spring 229 and the cylinder 24% to be exhausted through the port 236,- whereupon the cylinder is drawn down by a spring 249' (Fig; 2).

The cylinder 240 (Fig. 2) is pivoted-at 250' to an arm 251 of a three-armed lever fulcrum'ed at 252 on the frame. To the: anti 251:.is; connected; one: end of. the: spring-.249,; the other end being; secured to a: fixed' partii of the. machine. An arm 254- of the lever carries a=springr pressed. latch 256* adapted toengage a projection: on, alongitudinally' movablev bar 258.. A similar bar 260? is simultaneously operated by a latch-262 on. an arm 264: of

anzangle lever fulcrumed at 266m the frame: andr having: a depending arm 268- connected by an. adjustable: link. 270.

to.a third arm-272 on the lever fulcrurnedx at'2-52.

Upward movement of the cylinder 240 will therefore 132 and 130, 134 for spinning the screws. When the bar 258 is" drawnldown by upward movement of the: cylinder 24.0: it operates to setthe toothclutches-128, 132 to=spin the; screw 124. The bar 258- is-1 depressed against the tensionof a spring 278 connected between. a pin 279" on the bar and a pin 280- ona lever arm 282 until a latch 283 pivoted at 284 tothe lever arm 282; impelled by a. compression spring 285, engages a' notch 286 in the bar The bar'is. connected by a link,

258; and.holds it down, 287 to a lever 288 fulcrumed at 289 on a bracket 290;

The. lever 288 is branched to form". two arms, one2911 above a lever 292 also fulcrumed at 289- and the: other 293. beneath. it. The arm 293 carries. a: compression spring294 seatedpartly in the arm and partly in the lever 292.. The arnr 291.carries a: screw- 296 to engage the lever 292-when. the lever 288. is moved counterclockwise.

' The. lever 2532 has ayoke having arms 298 (Fig. 3-)-- embracing a'sleeve 300, the arms carrying rolls- 302 en-- gaging. a. groove304 in the sleeve 30.0. The. sleeveis splined to ashaft 385 at. 306. (Fig. 6) and is movablelongitudinally. of the shaft which is being; spun by the gear. 13.8. As the bar 258- is drawn down, the: lever arm- 293' through. the spring 294 pushes: yieldinglyupward on thelever. 292,.causing. the rolls 302 to lift, the. sleeve 300 andtengagethe tooth clutches 128,. 132. to. spin thescrew 124inthe direction to draw. the bail 109 down; Depressionof. the. bar 268 at the same. time: as the bar. 258 operates thro'ugh similar mechanism to setthe clutches 138, 134' torotate the screw 126 anddraw the bail 108 down on the-forepart of the shoe.

Securedto the lower end ofi thelshaft 305. isa cup 307- (Figs; 3 and 6) and above the cup is a sleeve-308 which islrotatabl'y connected to. the cup by tongues-309 on the sleeve which extend down into. recesses 310. (Fig. 3) in the rim of'the cup3tll. In the upper portionlofthe sleeve 308' are two. notches 312 with. downwardly and-inwardly I lBCIlHCCl WfilliWl'llCll are. engaged by complemental pro' jections 314- on: the gear 138;. The sleever308 is sustained by a stiii spring 316 (Fig. 6), and the gear 138Wlll therefore rotate the shaft 385 because of; the pressure. of the spring upon; the sleeve to hold it. against: the projections 314 carried by the gear 138 until resistance to movement of the shaft is built up by pressure on theworlc sufficieut to cause the projections 314 to slip part way out of the notches 312, thereby depressing the sleeve 308"againstthe sprihg 316. The sleeve 308 has a groove 318 engaged byrolls320" on a yoke 322 (Fig; 6) forming part ofthe. leverarm 282' fulcrnmed at 324 and carrying the latcht283l The lever 282' has a surface 326 which, when the latch- 283" engages thenotch 286 in the bar 258,. substantially engages a surface 328 on the. bar. Therefore,v when the. sleeve 308 is, forced down, by relative movement of the projection 314 and' the notch 312,, due to resistance of the shoe to pressure, the lever 282, 32-2 iszturned counterclockwise, the surface 326 engaging, the surface 328401 lift the; bar 258.. to disengage the. clutches 128,. 132,, a

tail 338 on. the. latch- 283 thenengaging, a stop screw' 3321.

on; the frame tamelease; the bar 258 which is thenyfree' to be furtherlifted by; the: spring 278,

A rod 333- (Fig; 2?); extends transversely of. the bars 258, 260 and is guided in a bracket 3341011111611'31116, a compression spring. 3375 being mounted on the rod-- be.- tween the bracket and the pin inthe rod. The other end of the rod 333 is extended by a smaller rod 336 guided-in. asleeve 337 supported'in a bracket 338 on the. frame. The rod. 336 is connected to a Bowden cable 339. As shown in Fig.6, the rod 333 intersect'sthe bars 258-, 260 which have notches 3'40 permitting longitudinal movementof therod' when the. bars are in their inoperative on upper position. When the rod 333- is in its. normalposition-in response to the spring 335 there are slabbed-off places 341 onYthe rod opposite the bars 258,. 260 permitting normal operation. of the bars as described, and, when the rod 333 is moved longitudinally against the spring 335 by a pull on the cable 339, circular p0rtions of the rod 333 enter the notches 340 in the bars and prevent their operationt This pull-v on the cable is effected by leftwise movement of the handle 33 in a manner to be described. Pressure on the handle 33' totrip the. indexing clutch will: therefore be ineffective unless the horizontal rod 333' can slide by the vertical bars 258, 268,.whichcanonly happen when the bars are raised and the tooth clutches out of operation.

in each of the four pad boxes carried by the turret is. onevof the inflatable pads 52 each of. which is connected by a pipe 342 to. two valves- (Fig. 8), an. infiatingvalve; 343? and a deflating valve 344,. thevalves being lined up in the direction of. rotation ofthe turret. When the:

turret stops at the loading station one. of the. exhaust valvesi344 is over a deflating lever 346 (Figs. l-land' l5) and afilling; valve 343 isoverianinflating nozzle 348; The described operation of the screws 124, 126 iswhich. may be depressed to release the latch by allever 357 (Fig. 7) pivoted at. 358: and operated; by a rod1359" (Fig. 13 leading to a horizontal; arm. 360 on a rockshaft 361 operated by a release handle 362'whichis heltl in upright position by a tension spring 364 connected at one end to the lever 360 and at the other to theframe. The stem 353 of thevalve. has a port 365 (Fig. 151)- in it which, whenthe valve is closed byits spring," linesup with passages in: the valve casing to exhaust. fluid: from apipe 366'. Fluid; pressure: from the reservoir R passesthrough the pipes; 56,. 58 and a pipe 368 tothe valve- V-2 and,, when the valve' is open, tothe pipe 366 and thence through the pipe=204 to the cylinder 194 to operate the screW-reversing' mechanism as described. The

,pipe 366 is also connected with a pipe 369 t'o apilot valve PV comprising a casingv 370 in which is 'a piston 371- connected' toe: valve stem 3'72 impelled upward by a spring. 374; Whem the valve is open, air: can pass from a pipe'376 through. avpipel 378 tothe airnozzle 348' and through the pipe 87* to operate the plunger 84 and release the latch: 72-. and permit the gages. tobe moved out of. operative position by the spring 482 When the valveisclosed, the pipe 378. is exhausted throughaport 380 in jthe valve stem 372- which then lines up with" passages in the valve casing: 370 leading to-the pipes 87 and 378.v I

The lever. arm: 282;-which moves up to disconnect the screw spinning; clutches, pulls on a Bowden wire 382 (Fig; 2-): to open a: valve V-3= (Fig; 15)" like the" valve V-2:' already described. The Bowden' wire 382" is" connected: to anvarm 386\ oi anangle lever pivoted at" 388 and; having an: arm 390 to engage a= stem-3'92 of the valve to open it when the arm 386 is pulled down. The

arm 386 when depressed is engaged by a latch 396, the latch being biased by a spring 398to engage a notch in the arm 386 when the valve is open. The latch 396 is pivoted at 400 together with a lever, one arm 402 of which engages a spring 404 mounted in a casing 406. The tension of the spring may be adjusted by a screw 410 threaded through the casing and engaging a disk above the spring. Another arm 412 of the lever engages a plunger 414 in a cylinder 416 in the head of which is a small pipe 418 leading from the pipe 376. Thus, pad-inflating pressure in the pipe 376 will gradually build up in the cylinder 416 and depress the plunger 414 which will turn the lever 402, 412 counterclockwise until a pin 420 on the lever pushes the latch 396 ofi the arm 386 and allows the valve to close and terminate the inflating operation after the pad has been inflated to a pressure predetermined by compression of the spring 404.

The pipe 378 (Fig. 10) leads to a cylinder 422 fixed to a bracket 423 fixed to the front panel 86 of the frame. A stern 424 of the inflating nozzle 348 is slidingly mounted in the cylinder, the stem being pushed upwardly by the pressure from the pipe 378. In the nozzle 348 is a valve 426 held closed by air pressure and having a stem 428 downward movement of which will open the valve.

The inflating valve 343 on the turret has the con struction best shown in Fig. 9. A valve stem 430 is guided for vertical movement by a perforated washer 432 held between the shoulder of a counterbore in a body portion 434 of the valve and a ring 436, the ring being engagedby a yielding washer 438 pressed upward by a screw cap 440 threaded on the body portion 434 and having a snout 442. The valve stem 430 has a fiange'444 held against the washer 438 by pressure in the pad. The open position of the stem is limited by engagement of the flange 444 with the perforated washer 432.

The deflating valve 344 is similar to the valve 342 except that the valve stem 430 extends beyond the snout 442 so that the valve stem is exposed for contact with a button 448 on the deflating lever 346. The valve in the inflating nozzle 348 is similar to the inflating valve of Fig. 9 except that, instead of the snout 442, it has an opening 450 to receive the snout of the inflating valve. As the inflating nozzle 348 is pushed up by air pressure, the snout 442 enters the opening 450 of the nozzle and presses against the yielding washer of the nozzle, sealing the two valves together, and the stems 428, 430 engage each other, the stem 430 of the inflating valve being first raised to its limit and further movement of the nozzle opening the nozzle valve permitting air to pass from the pipe 378 to the pipe 342 leading to the pad 52.

As the nozzle 348 rises, it operates a lever arm 452 I (Fig. 10) connected thereto by a yoke engaging a groove 454 in the nozzle. The lever arm 452 is pivoted at 455 to the bracket 423 and has a depending arm456 between which and a lug on the bracket is a spring 457 held in place by a screw 458. The depending arm 456 is arranged to engage a rear arm 459 of a lever pivoted at 460 to the bracket 423. A forward arm 461 of the lever engages a notch 462 in a vertical bar 464pivoted at 466 to the deflating lever 346 which is pivoted between its ends on the pivot 455 of the nozzle lever arm 452 As the nozzle rises, the lever 452, 456 is operated counterclockwise (Fig. IO) and the lever 459, 461 is turned clockwise to raise the bar 464, turning the deflating lever 346 clockwise and lowering the deflating button 448.

The bar 464 is extended by a rod 468 which passes through an ear 470 on the bracket 423 (Fig. 13) and has thereon a compression spring 472 confined between the ear 4 70 and nuts 474cm the end of the rod. When the bar 464 rises, therefore, the spring 472 is compressed and, to hold the bar up with the deflating button 448 depressed, a latch 476 is provided. The latch is mounted for free swinging movement on the vertical rod 34 and when the bar 464 is raised the latch 476 engages a notch 478 in the bar (Figs. 12 and 13), the latch being impelled by a compression spring 480 (Fig. 11) on a rod 482 which passes through an ear 484 on the latch and has a nut 485 on its end. The spring 480 is confined between the ear 484 and an extension bar 486 which is pivoted at 488 to an upright arm 490 of the hub of the lever 360 (Fig. 13) so that when the handle 362 is moved to the position there shown the latch 476 will be withdrawn from the notch 478 and the bar 464 and the spring 472 will react to raise the button 448 and open the deflating valve 344 and at the same time the rod 359 (Fig. 7) is pushed to close the valve V2. When the release lever 362 is in its normal upright position the spring 480 urges the latch against the bar 464 and, when the bar is raised, into the notch 47 8.

When the nozzle 348 is connected to the valve 343 for inflating the pad at the loading station, it should be impossible to index the turret. Accordingly, there is on the shaft 34 an arm 492 (Fig. 11) which lies in the path of the depending lever arm 456 when that is depressed by raising the nozzle 348. Thus, turning of the shaft 34 by the handle 33 to index the turret is prevented. When after inflation the nozzle is moved down by the spring 457 to clear the inflating valve the lever arm 456 is above the arm 492 (Fig. 10) and the shaft 34 can be turned to trip the clutch and index the turret.

The turret should not be indexed While the screws are being operated to apply pressure to the shoe. Accordingly,the vertical shaft 34 has an arm 494 (Fig. 10) pivoted at 496 to a rod 498 slidable in a sleeve 500 (Fig. 11) held in the bracket 41, the rod being connected to the Bowden wire 339 connected to the rod 336 (Fig. 2) which, as explained, cannot be moved longitudinally unless the bars 258, 260 are up and hence the screw-spinning clutches inoperative. The indexing handle 33 can be moved to the left to cause indexing of the turret only when the nozzle 348 is down, when the gages are out, when the knurled collar 50 is above the arm 51 on the shaft 34, and when the tooth clutches 132, 134 are disengaged so the rod 333 can be moved longitudinally against the spring 335 by a pull on the Bowden wire 339 connected to the arm 494 on the vertical shaft 34.

The treadle T2 having been operated, the shoe is under final pressure at the operating station. Should it be discovered that the shoe and sole are improperly positioned or if for any reason it is desired to release the shoe before indexing the turret, the release lever 362 (Fig. 1) is moved toward the left. The lever is fixed to the rockshaft 361 on which is an arm 501 carrying a roll 502 which lies directly under the ring gear 26 on the under side of which are four recesses 503 (Fig. 13) into one of which the roll 502 may enter if the turret is' properly indexed; otherwise the release lever cannot be operated. When operated, it does two things: it exhausts the padand causes operation of the pin clutches in reverse to relieve pressure on the shoe.

Swinging of the handle362 to the left (Fig. l) pulls on the bar 486 (Fig. 11) to swing the latch 476 out of the notch 478 in the bar'464, permitting the spring 472 to pull down the deflating lever 346 and raise the button 448 against the deflating valve 344 to open it and deflate the pad 52 at the loading station. The horizontal arm 360 (Fig. 13) on the rockshaft 361 is connected by the link 359 to the member 357 (Figs. 2 and 7) which engages the arm 356 of the latch 355 of the valve V-2 and allows it to close, thus exhausting the pipes 366 and 204 (Fig. 15) leading to the cylinder 194. The spring 196 then reacts to slide the sleeve 166 into the position shown in Fig. 5 and open the valve 228 (Fig. 4) to cause operation of the cylinder 240 with resultant setting'of the tooth clutches to rotate the screws 124, 126

.in a direction to move the abutments away from the shoe.

firessur'e. onthe piston. 371.. of. the pilotvalve RV is also.- released, causing it to be closed by thetsprin g-374 tocuts ofii supply of air to the nozzle 348.

If, after having. applied. pressure to; the shoe, its an pearance seems satisfactory to. the operator, he will index the turret by. leftward movement of. the indexing. handle 33 (Fig. 1). It is safe to index. the turret only. if theinflatingnozzle is down, if the: gages. are. released, the. tooth clutches are not. operating and if the deflating-button is down. The inflating nozzle will. be down because, after the application. of. predetermined pressure in the inflatable pad, the latch 396. was, released, allowing. the valve V3- to close. Upward. movement of the inflatingv nozzle, due to. the air pressure, acting on. the lever. 452,. turned it counterclockwise, causinggthe lever 459,, 461 to turn. clockwise (Fig. 10), and lift the bar 464 until engaged by the latch 476 in the notch. 478 (Fig. 12) so that. when the valve'v V-3 closed, the air Wouldl be exhausted from. the. cylinder 422,. allowing the spring 457 to react to move the nozzle down. The gages are released. because during inflation.- ofthepad air pressure inthe pipe 87 operated the lever 82 to release the latch 72. and allow the bar 40 to risevv and lift the collar 50- out of the path' of the arm 51 on the shaft 34. The tooth.

cause when the inflating nozzle was raised the bar 464. was lifted and locked up by the latch 476 and the lever- 34.6. was turned clockwise, to lower the button. 448.

Under the conditions above noted, the handle 33 can be turned to the left to rotate the shaft 34, causing the arm 35 to pull on the link 36 connected to a clutch lever 505 (Fig. 16) having a fixed pivot at. 506. Onthe lever 505 is an arm 507 carrying a spring plunger 508 which rests against an arm 509 carryinga roll. 510 which is in the path of a cam 512 on a driven part 514 of the clutch..

The arm 509 is pivoted at 516. to the lever 505, and a stop arm 518 is pivoted at 506' and has its freeend in engagement with a projection 520 integral with a halfround stud 522 carried by the driven member 514- ofv the-clutch, the. driving member being 524. Thestop arm. 518 is upheld by a tension. spring 526 connected between apin on the arm 518 and a pin on the arm 507. On the arm 509 is a projection 528 overylinga. lug. 530 on. the

stop arm 51850 that a pull on. thellink 36 willmove the. stop arm 518 away from the projection 52.0;v allowing.

a spring plunger 532 acting-on the projection 520 to rotate the half round stud 522 and. cause it to engage one of a series of half round recesses 534 formed in the driving member 524 of the clutch.. Duringv revolution of the driven member 514 the cam 512. thereon engages the roll, 510 andmoves the arm 509 to. disengage the projection 528 from the lug 530. and allow the. spring-.526 to raise the stop to engage the projection 520 after. the

' driven member 514 has made one revolution, the. half round stud 522 being then. turned into the. positionshown,

freeing the driving member 524 from the driven member 514; As shown in Fig. 1.6,v a second half round stud 535 is provided having two projections, one on each side. A projection 536 engages the spring plunger 532 and. a-

vent turning the. turret though its rate of movement is.

projection 537 engages a plunger 538 impelled by" a compression spring 539 so that when the projection 520 is released to set the clutch'both: studs v 522. and 535 will be turned but in opposite directions, one engaging first one side of one of the recesses 534and theother'engaging first the opposite side of another one of the recesses. Thus, any relative movement between. the driving and driven members after the studs engage is prevented.

As showninfiig. 17-, the driving menrbefiti hastfixedtthereto aworm. wheel. 540 drivenbya worm! 5.4L onzthea shaft-3l connected to the motor M. (Fig-. 14). [the driveni member 514. is secured to ashaft. 542. carrying; a gear.- 5T43.-which.is given a single revolution for each-operation. of the clutch. The. gear 543 meshes-with a: largerimt gear. 544 loose on a hollow'shaft 546. The rim gfiflr'has teeth onrboth. sides of itsrim, the inner teeth (Fig..1 8) meshing; with a..pinion 548.freelypivoted. to anqarm 5501 and to a disk 551'- having a. stub shaft 552 journaledin; the hollow shaft 546, the pinion 548 also meshing. with: a pinion 5.33 fixed toa shaft 554. The arm-SSQ-engagesi an. eccentrc pin 555 secured to the shaft 542. Oneroetation of. the gear 543turns-the rim-gear 544far enough:

. to impart one revolution to the pinion 548 whichimpar-ts:

one revolution to the pinion- 553,. the shaft; 554 and the gear 28 thereon, the gear 28 imparting one-fourth, of. a revolution to thering gear 26. 7

However, during one-fourth of the revolution; of the; gear 543'the eccentric pin 555 is moving the pinioni548 to. the right (Fig. 18). to decelerate the rotation. ofythe pinion 553, during the next half of the revolution the eccentric. is. moving the pinion 548- to the left'and accelerating the. rotation of the pinion- 553, and during the-last2 quarter of a revolution thepinion'is moving. to the right: and decelerating the pinion 553. Thus, the movement of the turret is. accelerated. and decelerated in accordance with. the principle disclosed in the James Patent No. 2314 278, granted March 16; 1943. 5.56pivotedr hr the disk 551 and meshing with the; rim: gear 5.44 and the pinion 553- are provided to distribute the, strain on the'mechanism anddo not affect the. opera-. tion as explained.

As indicated inFig. .14, theshaft 31 hasaaworm engag.-- ingza-worm wheel 560 located:in acasing 5.62 (Fig;- 1),, a shaft 5640f the worm Wheelcarrying thesprocket 162-; connectedto the sprocket 160' by thesprocketi chain1t61'v sothat the tooth clutch members'132, 134 are driven: continuously by the motor M.

When the: driving and driven members of the. clutcli are separated, there is nothing; so far. described, to pre'* 7 blocks- 57 0 ,one for each padbox. As theturret, while: being indexed, approaches the end of its movement onev of the blocks 570 engages an inclined surface 5.72 ona member-574 pivotedbetween its; ends toa fixed bracket. by a-screw' 576. An ar-m. 578" on the member 574.- is connected to a tension. spring 580 theother end; ofwhich is: anchored to the frame and holds an adjustable stop screw'582. in the member 574- against the front panel.- 86?; of: the. frame. engage the. inclined surface 572* of the member 574 and. a face; 586 at right angles tothe-face 584-. The member 574. has arighbangular notch 588 one face;ofwhich when-. thenotch. engages. the block, is parallel to the surface 584 and the othenface of which is parallel to the sun-- face 5.86: As the, turret approaches rest position, under the influence of the momentum member 568' the: clutch-- being. disconnected the block 570.: turns. the member 574-.

against the tension ofthe spring 58.0until its;surface:5.86" coincides with: the corresponding parallel surface in the; notch. 588,; whereupon the surface. 584'. is engaged by' action. ofv the spring: 58h: with the corresponding parallel.

surface in the-notch: 5.88. and the movement of th'etturret' is arrested. since further movement: thereof. would in volvefurther tensioning of; the spring 580. since. the? surface 584- and the corresponding surface of thetnot'clr which it engages are at a substantial angle to the path;

Two idle pinions.

The block 570 has one. flat face.584 to 1 1 of movement of the block 570 on the turret which, being then disconnected from the driving mechanism by release of the clutch, is merely drifting to a stop. Backward movement of the turret is positively prevented by engagement of the surface 586 with the corresponding surface in the notch 588 and further forward movement of the turret is opposed yieldingly by pressure between the'surface 584 of the block and the corresponding surface of the notch, the surfaces being then parallel and inclined to the direction of movement of the block. Thus, accurate registration of the turret with the valves 343, 344 in vertical alinement respectively with the inflating nozzle 348-and the deflating button 448 is assured, and also the tooth clutches 128, 130 associated with one of the pads are in operative relation to the tooth clutches 132, 134 mounted on the frame;

In removing shoes from the machine at the end of a run, the inflating nozzle will not always be used and hence thedeflating button maybe up. To insure that the deflating button will be depressed each time the turret is indexed, a cam piece 590 (Fig. 8) is secured to the snout 442 of each deflating valve 344 on the turret, the campiece having an edge 592 which engages the deflating button 448 and depresses it as the turret moves from the loading station. The latch 476 will, of course, hold it down until released by the handle 362.

Assuming the motor M to be running and the tank R .to be provided with'suitable air pressure by the pump P, the operator places a sole on the pad 52 at the loading station where the gage operating bar 40 has become connected at 42 with the bar 44 carried by the turret. The operator depresses threadle T-l (Fig. to open the valve V-1 and admit air to the cylinder 54, the piston 53 of which draws down the bars 40, 44 to bring the gages into contact with the sole, the bar 40 being held by the latch 72. Next a shoe is placed on the sole and located with respect thereto by the shoe gages carried by the sole gages. The bails 106, 108 are swung over the shoe, and the treadle T-2 is depressed, opening the valve V-2 to be held open by the latch 355. Air pressure from the pipe 368 then passes through lines 366 and'369 to the pilot valve PV and through line 204 to the cylinder 194, movement of the piston 206 of which reverses the direction of rotation of the pin clutches 132, 134 and opens the valve 226 to supply the cylinder 240 with air, causing the pin clutches to be raised to engage respectively pin clutches 128, 130 on the screws 124, 126. The spinning screws draw down the bails 100,108 until the resistance of the shoe causes the projection 314 (Fig. 6), in spite of the pressure of the spring 316, to move partly out of the notches 312, causing the lever arms 282 to move up and disengage the latches 283, whereupon the springs 27S draw up the bars 258, 260. The arm 28 2, through the Bowden wire 382, operates the lever 390 to open the valve V-3 to be held by the latch 396, causing air to pass from the line 56 through the pilot valve PV to the line 378 leading to the inflating nozzle 348 and to the pad 52, also through the pipes 87 to release the gages. When the pressure in the pad is suflicient to overcome the spring 494, the latch 396 is released to terminate the application of pressure to the pad and thus a predetermined pressure is applied to the pad. When the stern 424 of the inflating nozzle was pushed up to connect it to the inflating valve 343, the deflating lever was locked down by the latch 476 and, when the latch 396 was tripped off, the inflating nozzle was pushed down by the spring 457.until the lever arm 456 was above the arm 492. The pin clutches are out so the rod 333 can move endwise in response to a pull on the Bowden wire 339. Therefore the handle 33 can be swung to the left to set the clutch and rotate the turret one quarter of a turn. After being so turned, the clutch is thrown out and the turret left free to turn; at this point, however, one of the blocks 570 will be within the notch 588, 5.84 of the spring-pressed lever 574. Pressure of the 'notch on the block will cause the turret to be exactly indexed.

The above operations will be repeated on each pad until thepads are full. When the first shoe treated arrives at the loading station, the handle 362 is moved to the left (Fig. 13), thus pulling on the bar 486 (Fig. 11) to release the latch 476, whereupon the spring 472 (Fig. 10) reacts to operate the deflating lever 346, at the same time pushing on the rod 359 (Fig. 13) to release the latch 355 (Fig. 2), allowing the valve V2 to close and exhaust the line 366, 204 leading to the cylinder 194. Movement of the piston 206 by the compressed spring 196 operates the lever 178 to reverse the direction of rotation of the shafts which drive the pin clutches and opens the valve 226 to operate the cylinder 240 to connect the pin clutches and operate the screws to relieve pressure on the shoe at the operating station.

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

1. In a machine for applying pressure to shoe bottoms, the combination of a plurality of inflatable pads, means for presenting the pad in turn at a loading station, screw means for applying pressure to a shoe associated with each of the pads, power-operated means for operating the screw means, operator-controlled means for initiating the connection of the power-operated means to the screwmeans, means for automatically disconnecting the power means from the screw means after a predetermined pressure has been applied to the shoe, and means operated by said automatic means for causing inflation of the pads.

2. In a machine for applying pressure to shoe bottoms, the combination of a plurality of pads, means for presenting the pads in turn at a loading station, a pair of abutments above each pad, a nut connected to each abutment, a screw associatedwith each nut, rotation of the screws applying pressure to the shoe, a shaft at the loading station associated with each screw, operator-controlled means for connecting the shafts and screws, and means for automatically disconnecting the shafts and screws when the pressure applied reaches a predetermined amount.

3. In a machine for applying pressure to shoe bottoms, the combination of a plurality of inflatable pads, means for presenting the pads in turn at a loading station, a pair of abutments above each pad, a not connected to each abutment, a screw associated with each nut, rotation of the screws applying pressure to the shoe, a shaft at the'loading station associated with each screw, operatorcontrolled means for connecting the shafts and screws, and means for automatically disconnecting the shafts and screws when the pressure applied reaches a predetermined amount, and means responsive to the pressure applied to the shoe for inflating the pad.

4. In a machine for applying pressure to shoe bottoms, the combination of a plurality of inflatable pads, means for presenting the pads in turn at a loading station, screw means for applying pressure to a shoe associated with one of the pads, power operated means for operating the screw means, operator-controlled means for initiating the connection of the power-operated means to the screw means, means for automatically disconnecting the power means from the screw means after a predetermined pressure has been applied to the shoe, and means responsive to said predetermined pressure for causing inflation of the pad.

5. In a machine for applying pressure to shoe bottoms, the combination of a turret arranged for rotation about a vertical axis, a plurality of pads on the turret, screw means for applying pressure to the shoe, power-operated means'for operating the screw means, and means com-V prising a notched sleeve rotating with the screw means and a lever engaging said notched sleeve for automatically disconnecting the power-operated means from the screw 17. In a machine for applying pressure to shoe bottoms, the combination of a turret arranged for rotation about a vertical axis, a plurality of inflatable pads on the turret, means for rotating the turret to present the pads in turn at a loading station, a pair of abuments above each pad on the turret, a nut connected to each abutment, a screw associated with each nut, rotation of the screws applying pressure to the shoe, a shaft at the loading station associated with each screw, operator-controlled means for connecting the shafts and screws, means for automatically disconnecting the shafts and screws when the pressure applied reaches a predetermined amount, and means responsive to such disconnection for causing inflation of the pad.

18. In a machine for applying pressure to shoe bottoms, the combination of a frame, a turret rotatable about. a vertical axis on the frame, a plurality of inflatable pads on the turret, said turret having a plurality of recesses therein one for each pad, power-operated means for rotating the turret step by step to present the pads in turn at a loading station, a normally closed deflating valve for each pad, a lever at the loading station for opening the deflating valve, a spring for moving said lever to deflating position, a latch for holding said lever away from said valve, manually operated means engaging one of said recesses for releasing said latch, said manually operated means being inoperable unless it engages a recess, blocks on the turret, and a spring-pressed member having a notch, said member being mounted on the frame, to engage one of said blocks when the turret is properly indexed.

19. In a machine for applying pressure to shoe bottoms, the combination of at urret rotatable about a vertical axis, a plurality of inflatable pads on the turret, power-operated means for rotating the turret step by step to prevent the pads in turn at the loading station, a normally closed inflating valve for each pad, a normally closed deflating valve for each pad, deflating means at the loading station for opening the deflating valve, a nozzle at the loading station adapted to be connected with the inflating valve to inflate a pad, fluid-operated means for moving the nozzle toward the inflating valve, and means operated by the nozzle for moving the deflating means away from the deflating valve.

20. In a machine for applying pressure to shoe bottoms, the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, poweroperated means for rotating the turret step by step to present the pads in turn at a loading station, a normally closed inflating valve for each pad, a'normally closed deflating valve for each pad, a lever at the loading station for opening the deflating valve, a spring for actuating said lever to deflating position, a nozzle at the loading station movable toward the inflating valve, fluid-operated means for moving the nozzle to connect it to the inflating valve, connections between the lever and the nozzle for moving the lever against said spring when the nozzle is moved toward the inflating valve, and a latch for holding the lever against actuation by the spring.

21. In a machine for applying pressure to shoe bottoms, the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, power-operated means for rotating the turret step by step to present the pads in turn at a loading station, a normally closed inflating valve for each pad, an inflating nozzle at the loading station, means for connecting said nozzle to the inflating valve, a valve for supplying fluid under pressure to said nozzle, means for applying a predetermined pressure to a shoe at the loading station, and means responsive to such pressure for opening the valve to supply fluid to said nozzle.

22. In a machine for applying pressure to shoe bot toms, the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, poweroperated meansfor rotating the turret step by step to present the pads in turn at a loading station, a normally closed inflating valve for each pad, an inflating nozzle movable toward the inflating valve under fluid pressure at the loading station, means including a valve for supplying fluid under pressure to move said nozzle, means for applying a predetermined pressure to the shoe at the loading station, and means responsive to such pressure for opening the last-mentioned valve to supply fluid to said nozzle.

23. In a machine for applying pressure to shoe bottoms, the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, power-operated means for rotating the turret step by step to present the pads in turn at a loading station, a normally closed inflating valve for each pad, an inflating nozzle at the loading station, fluid-pressure-operated means for moving said nozzle toward the inflating valve,

means for supplying fluid under pressure to said fluidpressure-operated means, means for applying a predetermined pressure to the shoe at the loading station, means responsive to such pressure for establishing supply of fluid to said nozzle, and means for discontinuing the supply of fluid to saidnozzle after a predetermined pressure has been applied to the pad.

24. In a machine for applying pressure to shoe bottoms, the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, power-operated means for rotating the turret step by step to present the pads in turn 'at a loading station, a normally closed deflating valve for each pad, a lever at the loading station for opening the deflating valve, a spring tending to move the lever towardthe deflating valve, a latch to hold the spring under compression, and means for releasing the latch to deflate a pad.

25. In a machine for applying pressure to shoe bottoms, the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, power-operated means including a clutch 'for indexing the turret step by step to present the pads in turn at a loading station, manually operated means for setting the clutch, a normally closed deflating valve for each pad, a normally closed inflating valve for each pad, a nozzle at the loading station, means for moving the nozzle to connect it to the inflating valve, means preventing actuation of said manually operated meansto index the turret unless the nozzle is disconnected, and means to prevent opening of the deflating valve unless the nozzle is disconnected from the inflating valve.

26. In a machine for applying pressure to shoe bottoms, the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, poweroperated means for indexing the turret step by step to present the pads in turn at a loading station, a normally closed inflating valve for each pad, a normally closed deflating valve for each pad, a lever at the loading station for opening the deflating valve at said station, a spring urging the lever to deflating position, a latch for holding the lever against the action of said spring, means to furnish fluid under pressure to said inflating valve, manually operated means for releasing said latch, and means for permitting operation of said manually operated means only when the turret is properly indexed.

27. In a machine for applying pressure to. shoe bottoms, the combination of a turret'rotatable about a vertical axis, a plurality of inflatable pads on the turret, poweroperated means for indexing the turret to present the pads in turn at a loading station, a deflating valve for each pad, a spring-impelled lever for opening the deflating valve, a latch for holding the lever in inoperative position, and manually operated means for releasing the latch.

28. In a machine for applying pressure to shoe bottoms, the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, power-operated means for indexing the turret topresent the pads in turn at a loading station, a deflating valve for each pad, a spring-impelled lever for opening the deflating valve, a

latch for holding the lever 17 in inoperative position, manually operated means for releasing the latch, and means to prevent operation of said manually operated means unless the turret is properly indexed.

29. In a machine for applying pressure to shoe bottoms, the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, poweroperated means for indexing the turret step by step to present the pads in turn at a loading station, a normally closed deflating valve for each pad, a lever at the loading station for opening the valve, a spring impelling the lever to valve-opening position, a cam on the turret adjacent to each valve acting, upon rotation of the turret, to move said lever against said spring, and a latch for holding the lever'from movement by said spring.

' 30. In a machine for applying pressure to shoe bottoms,

the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, poweroperated means for indexing the turret step by step to present the pads in turn at a loading station, a normally closed deflating valve for each pad, a lever at the loading station for opening the valve, a spring impelling the lever to valve-opening position, acam on the turret adjacent to each valve acting, upon rotation of the turret, to move said lever against said spring, a latch for holding the lever from movement by said spring, and manually operated means for releasing said latch.

31. In a machine for applying pressure to shoe bottoms, the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, poweroperated means for indexing the turret step by step to present the pads in turn at a loading station, a normally closed deflating valve for each pad, a lever at the loading station for opening the ,valve, a spring impelling the lever to valve-opening position, a cam on the turret adjacent to each valve acting, upon rotation of the turret, to move said lever against said spring, a latch for bold venting operation of said manually operated means unless the turret is properly indexed.

32. In a machine for applying pressure toshoe bottoms, the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, power-operated means for indexing the turret step by step to present the pads in turn at a loading station, a normally closed inflating valve for each pad, a normally closed deflating valve for each pad, a lever at the loading station for opening the deflating valve at said station, a spring urging the lever to deflating position, a latch for holding the lever against the action of said spring, means to supply fluid under pressure to said inflating valve, and manually operated means for releasing said latch and discontinuing said supply.

33. In a machine for applying pressure to shoe bot-- toms, the combinations of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, poweroperated means for indexing the turret step by step to present the pads in turn at a loading station, a normally closed inflating valve for each pad, a normally closed deflating valve for each pad, a lever at the loading station for opening the deflating valve at said station, a spring urging the lever to deflating position, a latch for holding the lever against the action of said spring, a nozzle movable toward the inflating valve, means to 'furnish fluid under pressure to move the nozzle into connection with the inflating valve, and connections operated by such movement of the nozzle to retract said lever to be held by said latch.

34. In a machine for applying pressure of shoe bot toms, the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads-on the turret, powering the lever from movement by said spring, manually v operated means for releasing said latch, and means prepresent the pads in turn at a loading station, a normally closed inflating valve for each pad, a normally closed deflating valve for each pad, a lever at the loading sta tion for openingthe deflating valve at said station, a spring urging the lever to deflating position, a latch for holding the lever against the action of said spring, a nozzle movable toward the inflating valve, means including a valve for controlling the supply of fluid under pressure to move the nozzle into connection with the inflating valve, connections operatedby such movement of the nozzle to retract said lever to be held by said latch, and manually operated means for releasing said latch and causing said supply valve to close.

35. In a machine for applying pressure to shoe bottoms, the combination ofa turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, power-operated means for indexing the turret step by step to present the pads in turn at a loading station, a normally closed inflating valve for each pad, a normally closed deflating valve for each pad, a lever at the loading station for opening the deflating valve at said station, a spring urging the lever to deflating position, a

latch for holding the lever against the action of said 7 spring, a nozzle movable toward the inflating valve, means to furnish fluid under pressure 'to move the nozzle into connection with the inflating valve, connections operated by such movement of the nozzle to retract said lever to be held by said latch, manuallyoperated means for releasing said latch, and means permitting operation of said manually operated means only when the turret is properly indexed.

36: In a machine for applying pressure to shoe bottoms, the combination of a turret rotatable about a vertical axis, a plurality of inflatable pads on the turret, power-operated means for indexing the turret step by step to present the pads in turn at a loading station, a normally closed inflating valve for each pad, a normally closed deflating valve for each pad, a lever at the loading station for opening the deflating valve at said station, a spring urging the lever to deflating position, a

References Cited in the file of this patent UNITED STATES PATENTS Re. 8,706 Blaney May 13, 1879 130,150 Perkins et al. Aug. 6, 1872 146,547 Perkins Ian. 20, 1874 1,274,723 La Rouche Aug. 6, 1918 1,630,156 Abel May 24, 1927 1,675,233 Sturm June 26, 1928 1,691,278 Furber Nov. 13, 1928 1,946,420 Brown, Jr. Feb. 6, 1934 2,080,035 ,Finn May 11, 1937 2,146,927 Barry Feb. 14, 1939 2,263,673 Brauner Nov. 25, 1941 2,390,649 Hoffman et al. 1 Dec. 11, 1945 2,608,703 Marasco Sept. 2, 1952 FOREIGN PATENTS 256,201 Great Britain Sept. 30, 1926 679,207

France Ian. 6, 1930

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