US2558847A

US2558847A - Machine for applying pressure to shoe bottoms

Info

Publication number: US2558847A
Application number: US751560A
Authority: US
Inventors: Gulbrandsen Helge; Milton H Ballard; Jr Lambert S Linderoth; Lloyd G Knowles
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1947-05-31
Filing date: 1947-05-31
Publication date: 1951-07-03
Anticipated expiration: 1968-07-03

Description

y 5 I H. GULBRANDSEN ETAL 2,558,847

MACHINE FOR APPLYING PRESSURE TO SHOE BOTTOMS 6 SheetsSheet 1 Filed May 31, 1947 14 fizz/anions Helge Gulfirarzalsm Milton/{Ballard Q LamkertSLz'ndemt/Lfi Lloyd G [flow/es lIl .nllll i y 195] H. GULBRANDSEN ET AL 2,558,847

MACHINE FOR APPLYING PRESSURE TO SHOE BOTTOMS Filed May 31, 1947 6 Sheets-Sheet 2 m m mm? 23w gags. w mm uwm aL .L

6 Sheets-Sheet 3 J y 1951 H. GULBRANDSEN ET AL MACHINE FOR APPLYING PRESSURE TO SHOE BOTTOMS Filed May 51, 1947 y 1951 H. GULBRANDSEN ET AL 2,558,847

MACHINE FOR APPLYING PRESSURE TO SHOE BOTTOM-S Filed May 51, 1947 6 Sheets-Sheet 5 Fad 7 2/3 [55 216 14 Inventors Helge Gulbrandsen Milton HBallard Lambert S. Linderoth Jr July 3, 1951 H. GULBRANDSEN ET AL 2,558,847

MACHINE FOR APPLYING PRESSURE TO SHOE BOTTOMS Filed May 51, 1947 Inventors Hel e Gulbr'andsen ML tonh. Ballard 536 Lambert SLz'naermh Jr.

G Knowles Patented July 3, 1951 MACHINE FOR APPLYING PRESSURE TO SHOE BOTTOMS Helge Gulbrandsen and Milton H. Ballard, Beverly, and Lambert S. .Linderoth, Jr., Wenham, and Lloyd G. Knowles, Hamilton, Mass., assignors to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application May 31, 1947, Serial No. 751,560

71 Claims.

- 1 This invention relates to machines for pressing soles on shoe bottoms and particularly to machines for permanently cement-attaching soles to shoes.

Objects of the invention are to improve and perfect machines of the type disclosed and claimed in United States Letters Patent No. 2,301,205, granted November 10, 1942, and No. 2,356,756, granted August 29, 1944, both in the name of Sidney J. Finn, without sacrificing any of the advantages of prior machines.

These machines, like the present machine, are of the twin type in which two pad boxes are arranged side by side, one being for a right shoe and the other for a left. In the last-mentioned patent, as in the present machine, sole gagesare provided for locating a sole on each pad. Shoe gages associated with the sole gages locate a shoe with respect to the sole, pressure is applied to the shoe to press it upon the pad, the gages are withdrawn during the application of pressure, the pad is inflated to apply more uniform pressure to the shoe bottom, and, after a predetermined time has elapsed, the pressure is automatically released. These operations are performed alternately on the two pads of the machine.

' It is desirable that soles, irrespective of their length, be placed on the pad with their ball lines substantially in the same location longitudinally of the pad. The illustrated machine is equipped with ball-line sole gages which move in rectilinear paths transversely of the pad equally and oppositely to engage the edge face of the sole substantially at the ends of the ball line and locate the sole centrally of the pad, the gages being held against retraction.

Toe gages for the sole and shoe, which may be similar to those disclosed and claimed in United States Letters Patent No. 2,262,759, granted November 18, 1941, in the name of Sidney J. Finn, are carried by a floating member which is moved toward the end of the sole to cause the sole gage, which is of the V type, to find the sole where it is located by the ball-line gages substantially as disclosed in Patent No. 2,356,756 above mentioned.

To assist in alining the forepart of the shoe with the forepart of a sole so located, a ball-line shoe gage may be provided on the outer side of the sole only.

The means for moving the floating member which carries the sole toe gage also operates means for moving a mask plate longitudinally of the pad, the pad and pad box having substantially the construction disclosed in Patent No. 2,356,756 above mentioned. As illustrated herein, and as a feature of the invention, the mask plate is retracted to the appropriate position for the largest shoe by spring means and is moved to position it for a smaller shoe in accordance with the length of the shoe as determined by engagement of the soletoe gage with the end of the sole.

For locating the rear end of the sole, gages are provided which engage the edge face of the sole in the vicinity of the ends of the breast line, these gages being connected for equal and opposite movement to centralize the rear end of the sole with respect to the pad. Shoe gages carried by the sole gages have downwardly and inwardly inclined surfaces to centralize the shoe with respect to the sole, as disclosed and claimed in United States Letters Patent No. 2,445,848, granted July 27, 1948, in the name of Sidney J. Finn. In fitting a shoe sole for attachment to a shoe, it may become distorted so that its rear part is in improper relation to the forepart. Accordingly, as a feature of the invention the breast-line gages are arranged for limited bodily movement transversely of the pad to enable the rear end of the sole held by the sole gages to be moved laterally against yielding resistance either to the right or left when the shoe, properly located at the forepart, is brought into engagement with the inclined faces of the breast-line shoe gages. As illustrated herein, the sole gages are closed against a sole by movement of a slide having a handle convenient for the operator.

The position of the sole toe gage varies in accordance with the length of the forepart, that is, with the length from the ball line to the toe; the length of the sole from the ball line to the heel end varies in a predetermined ratio to the length of the forepart in a given style. Accordingly, as a feature of the invention, the breastline gages are constructed and arranged to be automatically moved toward the toe longitudinally of the pad to a position determined by the toe gage. That is, the position of the breast-line gages longitudinally of the shoe is determined by the position assumed by the toe gage when in engagement with the sole.

The shoe is pressed upon the pad by two abutments, one for the cone of the last and the other for the forepart of the shoe. each abutment being carried by a bail. Each bail is operated to apply pressure to a shoe by pressure fluid acting upon one side of a piston in a cylinder and is retracted by pressure fiuid acting upon the opposite side of the piston, and the area of the piston utilized for applying pressure to the shoe is greater than the area utilized for retracting the piston to raise the bail.

As a further feature ofthe invention, means is provided to insure that the two sides of each pressure-applying bail will move at the same rate. As illustrated, each end of each bail is pivoted to a slide and the two slides of each bail are connected by equal arms fixed to the ends of a rockshaft having a fixed-axis.

The movement of the iorepart abutment or toe rest rearwardly of the shoe to position it over the toe is limited by a movable stop which is automatically located in accordance with the length of the shoe. Movement of the toe gage toward the sole causes movement against a spring of a bar which is connected to a stop which limits movement of the toe rest.

After the toe gage has engaged the toe end of the sole and a shoe has been located on the sole, the bail carrying the heel abutment, which is held toward the toe end of the pad box by a spring, is swung by the operator over the cone of the last and the bail carrying the toe rest gravitates rearwardly of the shoe. The initial movement of the bail carrying the toe rest releases means for locking the bar and hence the stop in position to limit the swing of the bail at the position appropriate for the length of shoe being treated.

The forepart of the pad box is adjustable about a transverse axis located about midway of the length of the forepart of a sole and has substantially the construction disclosed in Patent No. 2,356,756 above mentioned. When the pad is adjusted for shoes that are to have high heels, the position of the toe restas determined by the toe gage alone is improper for that shoe and the higher the heel the farther out of proper position the toe rest will be as compared with its position for a shoe of.the same length but which is to have a low heel. Accordingly, a feature of the invention consists in means supplementing the action of the toe gage for automatically locating the toe rest properly on the shoe as the forepart of the pad box is tipped to accommodate shoes which are to have heels of greater height. For this purpose the stop for the bail is carried by a pivoted arm having an inclined curved slot which is engaged by a pin on the bar movement of which is controlled by the toe gage.

After the two pistons which actuate the balls to apply pressure to the shoe have been operated, an inflatable bag in the pad under the shoe is filled with liquid, for example water, under pressure to insure that uniform pressure will be applied to the marginal portions of the shoe sole so that a reliable cement bond will be obtained at all portions of the surface of the shoe and sole to be united. The novel inflating mechanism of this invention, as illustrated herein, comprises two noncommunicating cylinders placed end to end in upright position, the upper cylinder being supplied with water and the lower cylinder with fluid under pressure at either side of the piston therein. The upper piston has an inwardly opening, spring-closed valve for an opening through the piston, the upper end of the cylinder being connected to a supply of water. The valve is held open when the piston is raised and is allowed to close upon initial downward movement of the piston. The pistons are connected externally of the cylinders by crossheads and tie rods so that movement of one necessitates movement of the other in the same direction. When fluid under pressure s admitted above the lower piston, the piston of the upper cylinder is moved down, the valve closes and the water in the cylinder is forced into the bag of the pad under the shoe. When the lower piston is moved up by application of pressure fluid beneath it, the waterpi'ston moves up, drawing water from the bag, and finally the valve therein is opened to communicate with the water supply again.

The ball-line and toe gages are held in retracted position by several springs all of which have to be overcome by depressing a treadle. To

relieve the operator of the considerable labor of depressing the treadle, there is provided by this invention a mechanism which, upon slight initial movement of the treadle, is activated to depress the treadle by power, a latch then holding the gages in operative position and permitting the operator to remove his foot from the treadle.

By means of novel mechanism constituting a. feature of the invention a second depression of the same treadle operates a treadle-controlled valve which sets the fiuid-pressure-operated mechanism into operation. The first depression of the treadle pulls down a bar which allows the forepart gages to move into operative position, the bar being latched in its depressed position. The second depression of the treadle pulls down another bar which shifts the treadle-controlled valve which is also latched in its shifted position.

During the application of pressure to the shoe the latch holding the forepart gages in operative position is automatically released by a novel timing mechanism and the gages are retracted by springs. Pressure on the shoe is built up to the desired value and is maintained by check valves, the amount of pressure being determined by adjustment of a sequence valve. This valve then shifts, admitting pressure fluid, through a check valve, above the piston of the lower cylinder of the pad-inflating mechanism, whereupon the pad is inflated and thus uniform pressure applied to the shoe bottom. After the lapse of time suflicient to effect proper attachment of the sole and shoe, the latch holding the .treadle-controlled valve in depressed position is automatically released and the valve shifts to its initial position, whereupon pressure fluid is admitted beneath the piston of the inflating mechanism and beneath both pistons of the bails, the check valves being held open by fluid pressure to allow free exhaust of the fluid above all of the pistons. Re lief of pressure above these three pistons relieves pressure on the timing valve, which is then shifted by a spring to admit pressure fluid to one end of a cylinder having a piston rod the end of which when fully extended from the cylinder engages and releases the latch holding the treadlecontrolled valve in pressure-applying position. On the side of the piston opposite the piston rod is a stiff spring tending to extend the rod and adjustable means is provided to limit the travel of the piston. When pressure on the timing valve is released, as above indicated, the valve shifts to admit pressure fluid to thetiming cylinder to retract the piston against the spring as far as permitted by the adjustable means. When pressure is applied to the upper end of the cylinder of the inflating mechanism, it is applied also to the timing valve which is shifted to cut off the supply of fluid to the timing cylinder and to connect the cylinder to exhaust through a narrow orifice. As the fluid leaks out through the orifice, the spring behind the piston of the timing cylinder advances the piston rod which finally trips the latch of the treadle-controlled valve, allowing it to be returned to normal position by a spring. Means is provided to enable the operator to effect quick release of the fluid in the timing cylinder and hence the quick release of pressure on the shoe if, for any reason, it is desirable to release the pressure after it has been applied, for example, if the shoe and sole were found not to be properly located with respect to each other.

It is desirable to prevent accidental adhesion between the shoe and sole rearwardly of the breast line. Accordingly, as a feature of the invention a thin steel plate is attached by a sheet of plastic material to the member carrying the breast-line gages. The plate overlies the sole and the heel-seat portion of the shoe rests upon it and, since the breast-line gages are moved longitudinally of the sole in accordance with the length thereof, theplate is also automatically located with its toeward edge substantially at the breast line irrespective of the length of the shoe.

These and other features of the invention will appear more fully from the following detailed 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 perspective view of a two-station machine embodying the present invention, the right side of the machine being shown in full and the left side partly in outline;

Fig. 2 is an elevation of the left side of the right-hand pad box;

Fig. 3 is an elevation of the right-hand side of the right-hand pad box, the pressure-applying abufments being shown in pressure-applying position upon a last;

Fig. 4 is a plan view of the pad box shown in Figs. 2 and 3;

Fig. 5 is a view of the gage mechanism for the rear end of a shoe looking in the direction of the arrows in Fig. 4;

Fig. 6 is a side elevation showing the pad-in fiating mechanism and the bail-operating mechanism, the pad box being indicated in outline;

Fig. '7 is a front elevation of the treadle mechanism for the right-hand side of the machine; and

Fig. 8 is a diagrammatic view showing the connections between the various valves and fluidpressure-operated means.

The present invention is embodied in a twostation cement sole-ataching machine the righthand portion of which is shown in Fig. 1, the left-hand pad box being indicated in outline only and being understood to be the same as the right-hand side except that most of the parts are reversely arranged as they would be in a mirror image of the right-hand box. The manual controls of the left side of the machine are, however, shown as located so as to be convenient for the right hand and foot of the operator.

In the following description attention will be paid to the right-hand side of the machine, it being understood that the left side is similarly constructed and operated. A single oil pump Ill (Fig. 8), a motor I2 and pressure-control valve I3 are provided, the other parts being duplicated.

A hollow cast iron frame or casing I4 (Fig. 1) has legs I6 resting on the floor and is provided with manholes having covers I8, 20 and 22 for access to the interior of the casing in the bottom 6 of which there is a supply of oil 24 (Fig. 8). referred to as a sump. Bolted at 26 to the inclined top of the casing I4 (Fig. 1) is a support .28 for the pad box which has a. construction similar to that disclosed in Patent No. 2,356,756 above referred to. The pad box (Fig. 2) has a base 30 having a pair of uprights 32 to which a pair of depending ears 33 (Fig. 4) on a forepart 34 of the pad box are pivoted by a transverse shaft 36. A shank part 36 (Fig. 2) of the pad box is pivoted at 40 to the forepart 34 and at 42 to a rear part 44. The rear part is connected by links (56 to upstanding ears 48 on the base 30 and is supported at its mid portion on a five-sided cam 56 rotatably mounted on uprights 52 and provided with a hand wheel 53. On the forepart 34 of the pad box is a portion 54 extending downwardly and toward the heel end, said portion lying between two halves of a double wedge 56. A pin 58 is passed transversely through the portion Hgeach end resting on one part of the double wedge 56. A gib 59, L-shaped in cross-section, is secured to each side of the Wedge with a portion thereof overlying the pin 58 so that movement of the wedge longitudinally of the pad box will raise and lower the pivot 46. The wedge is so moved by a screw 66 having a hand wheel 62. The portion '54 has a curved upper surface struck from the axis of the pivot 40 as a center which engages a correspondingly curved surface 63 on the shank part 38 to afford additional support for the shank part.

Novel gage mechanism for locating the ball portion of the forepart of a sole comprises a pair of slides 66, 66 (Fig. 4) mounted in ways on the under side of the forepart 34 for rectilinear movement transversely of the pad box, each slide having pivoted thereto a block 68. Two angle levers are pivoted to the under side of the pad box at III, I2 and have short arms I 1, I6 geared together at W and their long arms 78, 86 forked to receive the blocks 68. An arm 82 on the lever 86 is pinned to a block 84 which enters an inclined slot 66 in a slide 86 guided for movement longitudinally of the pad box. Movement of the slide 88 will therefore move the

slides

66, 66 equally and oppositely toward and from each other transversely of the forepart 34 of the pad box. The outer ends of the

slides

64, 66 turn upwardly and are secured by screws 88 (Figs. 2 and 3) to downturned portions of arms 96, 92. To the arm 90 is pivoted at 94 a gage arm 96 and to the arm 92 is pivoted at 98 a gage arm I00. The

pivots

94, 98 are some distance from the ends of the arms 96, I06 and at the end of each arm there is a knob I62 recessed on its under side to receive a light compression spring I64 (Fig. 4) which yielriingly holds the opposite ends of the gage arms 96, I" in contact with the pad. On the arm 90 is a sole gage I06 arranged to engage the edge face of a sole substantially at the end of the ball line and on the arm I06 is a similar sole gage I08, and above the sole gage I08 is a shoe gage III) arranged for adjustment relatively to the sole gage. The arms 96, I00 are movable bodily transversely of the pad and the gages I06, I08 will engage the ends of the ball line of a sole of any width when the sole is placed with its ball line in the same position lengthwise of the pad.

Toe gages for the sole and shoe may be similar to those disclosed'in Patent No. 2,356,756 above mentioned. Sole gage plates H2, H3 are separately pivoted to each fork of a gage member H4 which has a shank H5 lying between surfaces H6 formed on a member II1 to which it is pivoted at H8. The surfaces H6 prevent lateral lost motion of the member H5 should the pivot H8 become loose. The member H1 is held by screws I to a floating plate I22, the screw-holes in the member H1 being elongated to permit lateral adjustment of the sole toe gage relatively to the plate I22. A shoe toe gage I23 is mounted for lateral adjustment by a screw I24 on a slide I25 which can be adjusted longitudinally of the pad relatively to the sole gage fork H4 by turning ascrew I26 which moves a transverse slide I21 having on its under side an inclined groove engaging an upstanding pin on the slide I25.

The marginal portions of the floatin plate I22 at its sides extend into slots in guide members I28 secured to a pad box cover plate I30, the slots in the members I28 being deepened laterally to provide space for lateral movement of the plate I22 to enable the sole gage fork H4 to find the toe of any right shoe that may be positioned on the pad by the gages I06, I08. The slots in the guide members I28 provide a loose running fit for the plate I22, and hardened plates I29 are fixed to the cover plate I30 beneath the plate I22. A pair of cam levers I32 (Fig. 2) are each pivoted on eccentric pins between ears on the plate I22, their cam-shaped'lower ends being arranged to engage the hardened plates I29 when their upper ends are swung toward the 8 (hidden by the lever I44) the lower end of which is loosely fulcrumed on the shaft I46. Between pad box and to lift the floating plate I22 against the overlying portions of the guide members I28, thus frictionally locking the plate against movement.

A link I34 (Figs. 2 and 4) having a universal joint at each end connects each of the levers I32 to an upright arm I35 fixed to a rockshaft I36.

' The universal joints at the ends of the links I34 are preferably of the type disclosed and claimed in United States Letters Patent No. 2,173,155, granted September 19, 1939, on application of Frederic E. Bertrand. Stops for adjustably limiting movement of the levers I32 in each direction are providedby screws I31 threaded through upstandin lugs on the plate I22. Tension springs I38 connected between the upper ends of the levers I32 and pins on the plate I22 keep the levers from turning until the toe gage encounters a sole on the pad. Then, due to resistance to movement of the sole, the levers I32 turn and lock the plate I22 against movement away from the sole. The rockshaft I36 is journaled in brackets I39 depending from the forepart 34 of the pad box and has an upright arm I40 (Fig. 3) fixed thereto which is connected by a link I42 to the upper end of a lever I44 by a pin I45 which normally is in line with the axis 36 about which the forepart 34 of the pad box is adjustable. The lever I44 is fulcrumed on a short shaft I46 to the base 30 and is connected between its ends by a link I48 to the mid portion of an upright arm I50 of an angle lever loosely fulcrumed on a shaft I52 to the base 30. The angle lever has a nearly horizontal arm I53 on which is a pin I 54 for engaging a slot I55 in the upper end of a vertical bar I56. A block I51 (Fig. 8) is secured to the bar and is connected by a heavy tension spring I58 to the arm I53.

Returning now to the slide 88 movement of which operates the ball-line gages, it will be seen from Fig. 3 that the slide 88 is connected by a link I60 to the upper end of a lever I62 its ends the lever l62 is connected by a link I64 to an angular lever I66 fulcrumed on the shaft I52. The lever I66 has a forward projection I68 which overlies an arm I10 projecting toward the forepart of the pad box from the vertical bar I56. Clockwise movement of the levers I44, I62 is limited by stops I1I on the base 30.

The lower end of the bar I56 (Fig. 8) has a pin I12 engaging a short slot in a bar I14 which extend down past a treadle I16. The treadle is pivoted at I18, so that it can be turned up out of the way, to a treadle lever I fulcrumed on a shaft I82 held in the frame I4, the lever having an arm I84 which is embraced by a fork I86 held in the frame. Shoulders I81 on the arm I84 engage the lower side of the fork to limit upward movement of the treadle lever I80 in response to a tension sprin I88 connected at its lower end to the treadle lever and at its upper end to the frame. Downward movement of the treadle lever is limited by a pin I90 which engages the upper side of the fork I86 when the treadle lever is fully depressed.

A spindle I92 (Fig. 7) forked at each end extends transversely through the lever I 80 which can turn relatively to the spindle. The spindle, however, is held from turning by the bar I14 which extends throu h the fork in the right-hand end thereof. In the same fork a toothed dog I94 is pivoted to the spindle I 92 and opposite the tooth of the dog is a notch I96 in the bar I14 toward which the dog is urged by a leaf spring I98 attached to the frame. In the fork at the opposite end of the spindle a. similar dog 200 is pivoted with its tooth opposite a notch 202 in another vertical bar 204 which, like the bar I14, extends down through the fork at that end of the spindle. The dogs I94, 280 are held spaced from each other by a link 206 pivoted at one end tothe dog I94 by a pin 208 and having a slot at the other end which engages a pin 2I2 on the dog 200, the pins 208, 2I2 bein connected by a tension spring 2I4 which holds the dogs .yieldingly toward each other. Normally the bar I14 is held raised and the gages are held in retracted positions by a. tension spring 2 I 6 connected at its lower end to a pin 2I8 on the bar and at its upper end to the frame. It will now be seen that depression of the treadle I16 will cause the dog I94, which is now held by the leaf spring I98 in position to engage the notch I96 in the bar I14, to pull down on the bar, the lost motion between the bar I14 and the bar I56 being first taken up and then the bar I56 moved down. The arm I53 (Fig. 3), held by the spring I58 with the pin I54 in the lower end of the slot I55, will move down and, through the links I48, I42, will rock the shaft I36, causing the toe gages to move inward over the pad toward a sole placed thereon. At the same time the arm I10 on the bar I56 will move away from the projection I68, allowin a tension spring 220 connected at one end to the lever I50 (Fig. 8) and at the other to the lever I62 to move the lever I62 and, through the link I60, to move the slide 88, thus causing the ball gages to approach and locate the sole centrally of the forepart of the pad. If the ball gages engage the sole first, the sprin 220 can yield to allow the toe gage to move farther, find the sole and then become locked. When all the forepart gages are in as far as the sole permits them to go. the bar I66 may still be depressed farther by tensioning the heavy spring I58 (Fig. 8) which can be done because of the pin-and-slot connection I54, I55. The treadle is depressed until a button 222 urged by a compression spring 224 snaps over the upper corner of the block I51, thus locking the forepart gages in work-engaging positions.

In order'that the gages may be released at the will of the operator should conditions require it, a manual release button 226 is provided depression of which (Fig. 8) causes partial rotation of a shaft 228, a slabbed-oif end of which engages a surface on the upper end of the button 222 causing it to be released from the block I51, the parts being then restored to normal positions by the spring 2 I 6 and other springs.

After the gages are locked in operative positions by the button 222. the treadle is released and, as it rises in response to he spring I88, the dog I94 (Fig. '7) engage", a cam surface on the bar I14 above the notch I96 and is rammed out of the notch against its spring I98 because the bar I14 is held from movement. Outward movement of the dOg I94 acts through the link 286 and spring 2I4 to swing the dog 288 into position to engage the notch in the bar 284 so that when the treadle is next depressed the bar 284 will be moved down.

This movement is utilized to control pressurefiuid-operated mechanism, to be described, by which pressure is applied to the shoe and the pad is inflated. As explained more full in Patent No. 2,356,756, the pad comprises a thick layer 238 of rubber (Fig. 8) under which is a normally collapsed inflatable bag 232 of rubber or other elastic material. Between the rubber layer and the bag is a mask plate 234 arranged to slide longitudinally of the forepart and normally held retracted by compression springs 236 (Figs. 2 and 3) threaded on rods 238 sliding in recesses in the top of a plate 248 overlying the forepart 34 of the pad box and having headed ends engaging lugs 242 on the mask plate. On the rockshaft I36 is fixed on arm 244 having a projection 246 adjustably fixed thereto which extends rearwardly of the pad and engages the mask plate 234. Therefore, when the shaft I36 is rocked to move the toe gages to engage a sole on the pad, the mask plate will be moved a distance proportional to the movement of the toe gages and will therefore be automatically located in accordance with the length of the sole.

On the left-hand side of the pad box (Fig. 2) is a bar 3I8 arranged to slide longitudinally and maintained normally at the leftwise limit of its movement by a compression spring 3I2 on a headed rod 3I4 partially occupyin a bore in the forepart 34 of the pad box, the head of the rod engaging a lu 3I6 on th bar. The rockshaft I36 carries an arm 3I8 on which is adjustably secured a projection 328 arranged, when the rockshaft is rocked to move the gages in, to strike the end of the bar 3I8 and move it to an extent controlled by the length of the sole. The other end of the bar carries a pin 322 which engage an oblique, curved slot 324 in the upper portion of an arm 326 pivoted at 328 to the base 38 of the pad box. On the arm 326 is a pin 338 located in the path of a bail 332 carrying a toe abutment or rest 334. The bail straddles the pad box and each end is pivoted by a headed pin 336 (Fig. 6) to a slide 338 movable substantially perpendicular to the surface of the pad. Initially the bail is swung to the position there shown with a notch 348 in the edge of the bail engaging a pin 342 pro- 10 jecting from the pad box and preventing accidental downward movement of the ball. The opposite side of the bail has a similar notch and pin. In this position (Fig. 2) the bail engages and moves toeward a tail 344 of a pawl 346 pivoted to the pad box 341, the pawl being urged by a torsion spring 348 toengage teeth 358 on the bar,

3 I 8. After the shoe is located on the pad, the bail 332 is allowed to swing by gravity (Fig. 6) over the forepart of the shoe, thus releasing the pawl 346 which engages the teeth of the bar 3I8, and looks it against movement toward the rear end of the pad box. When the bail reaches the proper position to engage a shoe of the lengthalready located on the pad by the toe gage, it engages the pin 338. Thus the toe rest is automatically located longitudinally of the shoe in accordance with the length of the shoe.

The slot 324 in-the arm 326 permits up-anddown adjustment of the joint 48 of the pad box by manipulation of the wedge by the hand wheel 62. The adjustment of the pad surface to correspond to the longitudinal curvature of shoes that are to have different heights of heels changes to some extent the position longitudinally of the pad which the toe rest should assume in order to engage the forepart at the proper point longitudinally thereof, and the inclination of the slot and its curvature are such that the toe rest is stopped at the proper location with respect to the shoe irrespective of the adjustment of the pad for shoes that are to have heels of different heights, the position of the rest with respect to the length of the shoe bein taken careof by the movement of the stop pin 338 in accordance with the position of the toe gage as determined by the length of the sole, as before described.

Another bail 368, which has notches normally engaging fixed pins 36I, straddles the rear part of the pad box and carries a last abutment 362 movable transversely of the last by means of a handle 364, as disclosed in Patent No. 2,445,848 referred to above. Each end of the bail 368 is pivoted to a slide 366 (Fig. 6) parallel to the slide 338. To insure that the two sides of the bail 332, or the two slides to which they are connected, shall move uniformly, a transverse rockshaft 368 is journaled beneath the pad box, the rock-shaft having at each end an arm 318 pinned thereto which carries near its nd a pin 312 engaging a block 313 which fits a transverse slot 314 in each slide 338. Thus, the two slides, one at each side of the pad box, are constrained to travel at the same rate. A similar construction is provided for effecting uniform movement of the slides 366 of the bail 368. The arms 318 have adjacent to the pins 312 projections 315 overlapping the heads of the pins 336 to hold them in place.

Breast-line gages 316 (Figs. 3 and 4) for the sole are fixed to bars 318 pivotally mounted at 388 in bifurcated ends of

arms

382, 384. These arms are eachpivoted at 386 to a U-shaped member 368 and inwardly extending portions of the arms are geared together at 398 to confine the gages 316 to equal and opposite movements. The member 388 is pivoted on a headless stud 392 to a slide 394 mounted in a guideway 395 secured to a plate 396 which is held on the rear part 44 of the pad box by screws 398 (Fig. 4). The movement of the slide 394 is in the direction of the longitudinal median line of the rear part of the pad box and its movement rearwardly of the pad box is limited by a stop 399 on the guideway 395 (Fig. 2). Shoe gages 488 are adjustably 11' mounted on the bars 318 over the sole gages 316 and have on their inner ends downwardly and inwardly inclined surfaces 402 which guide a shoe into central relation to a sole located by the sole gages 316.

The shoe gages 400 are each adjusted in and out with respect to the sole gages by turning a screw 404 rotatably mounted on a block 406 in which the shoe gage slides. Above each shoe gage is a slide 408 having an upstanding lug 409 through which the screw 404 is threaded. The under side of the slide 408 has an inclined slot which engages an upstanding pin (Fig. 2) on the shoe gage.

To close the gages on a sole, the plate 388 is provided with a guideway for a slide 412 which is moved longitudinally of the pad box by a handle 4. In the slide 2 is a slot 4l6 which is engaged by a depending pin 4" on'the gage arm 384. The slot 416 is inclined sufliciently to the direction of movement of the slide 412 so that movement of the slide will move the gages equally and oppositely to engage the sole and lock them against separation.

The breast-line gages are movable bodily transversely of the pad box about the pivot 392 to a limited extent in either direction against equal resistance. For this purpose the plate 388 has on its under side (Fig. 5) two grooves 420 which are spaced from each other by the width of the guideway 395. On the under side of the member 388 are secured two blocks 422 having alined holes extending through them. Lcngitudinally movable in each hole is a headed rod 424, and between each head and the corresponding block is a compression spring 426, the springs being preferably under equal compression. The heads on the rods extend into the grooves 420 and the springs tend to hold the heads on the rods against the sides of the guideway 395 and to hold the inner sides of the grooves 420 in alinement with the top corners of the guideway, the breast-line gages being then in central position with respect to the pad. If, on locating a shoe by the gages 402 with respect to the sole held by the gages 316, it is necessary for the sole to move laterally with respect to the shoe as the shoe is pressed on one or the other of the inclined surfaces 402, the gages and the sole can move bodily against the resistance of one or the other of the springs 426 to allow the sole to be centralized with respect to the shoe. This movement, however, is limited by engagement of the outer wall of the groove with the head of the rod 424 the spring 426 of which is being compressed. As shown in Fig. 5, the gages have been swung bodily to the left of the pad, thus putting the spring 426 at the left under increased compression while the opposite spring 426 remains under initial compression with the head of its rod 424 pressed against the inner wall of its groove. The gages may therefore be moved bodily laterally about the pin 392 in either direction to a limited extent against the compression of one or the other of the equal springs 426. The whole rear gage mechanism may be lifted off the stud 392 if desired.

The breast-line gages are movable bodily longitudinally of the pad box to accommodate shoes of difierent lengths the ball lines of which are located in the same position on the pad, the longitudinal position of the gages being controlled by the position of the toe gage. FOr this purpose the slide 394 carries a dependin bolt 430 (Fig. 2) on which is pivoted a block 432. The block is embraced by a fork on the end of one arm'434 of a lever pivoted at 436 (Fi 4) on a bracket 438 secured to the rear part 44 of the pad box. Another arm 440 of the lever is connected by a tension spring 442 to the pad box, the spring holding the slide 394 in its rearmost position against the stop 399 (Fig. 2). The arm 440 is pivoted at 444 to a twisted link 446 the rear end of which is slotted longitudinally at 448 (Fig. 3) and is connected by a pin 450 in the slot to the upper end of the upright arm I which controls movement of the forepart gages. The link 446 is preferably made in two parts slidable longitudinally with respect to each other and held in adjusted position by a screw 452 fixed in one part passing through a slot 454 in the other part and provided with a wing nut 455. When the treadle l16 is depressed to allow the gages at the forepart to approach the sole, the lever arm I50 moves toward the heel end of the pad and operates the

lever

434, 440 to move the slide 394 and the breast-line gages toward the toe end of the pad box, the amount of movement being determined by the length of the forepart of the sole as measured by the sole toe gage I I4. When the forepart gages are released and withdrawn, the breast-line gages may remain in position, the pin 450 movin in the slot 448. When the operator releases the breast-line gages by operating the slide M2, the spring 442 will retract them, their movement being arrested by the stop 399, at which time the pin 450 may or may not have engaged the heelward end of the slot 448, depending upon the adjustment of the link 446. The amount of movement of the breast-line gages relatively to the movement of the toe gage varies under different conditions and may be controlled by adjustment of the length of the link 446 or by setting the stud 392 in a diflerent hole in the slide 394, an additional hole being indicated at 459 in Fig. 4.

The slides 338 which carry the ends of the forepart bail 332 are connected by a crossbar 460 (Figs. 6 and 8) which is pivoted at its center to a large piston rod 462 which has a piston 464 workin in the cylinder 466 fixed in the portion 28 of the frame, the piston rod having a substantially oil-tight running fit in the head of the cylinder. A similar piston and cylinder are associated with a crossbar 468 connected to the slides 366 of the bail 360 for the heel end of the pad. The ball 360 is swung toward the forepart of the pad box by a tension spring 469 (Fig. 1) connected at one end to a pin on the ball and at the other end to a bracket 410 fixed to the frame. A rod 412 (Fig. 3) is pivoted at 414. to the forepart bail 332 and extends through an ear 418 on the bail 360. On a reduced portion 418 of the rod is a slotted washer 480 and on the rod between its pivot 414 and the washer is a compression spring 482. When the bail 360 is swung over the heel end of the last by the operator against the tension of the spring 469, the bail 332 will swing by gravity against the stop 330, as will be clear from Fig. 6. When, after pressure has been applied to the shoe, the bail 360 is released from pressure, the spring 469 will swin the bail toward the toe end of the pad box and the ear 416 will engage the washer-480 and swing the bail 332 with it toward the toe end of the pad until the notches 340 engage the pin 342 and then the spring 469 will compress the spring 482, which is weaker, and insure that the notches in both bails will be held in engagement with their respective pins. Lock nuts 483 on the 13 end of the rod 412 are merely to prevent the bail 360 from being moved rearwardly of the pad box far enough to release the rod.

The

bails

332, 360 having been located over the shoe as above explained, the admission of pressure fluid to the upper sides of the pistons 464 by pipes 482 (Fig. 8) will cause the bails to descend and apply pressure to the shoe. The inflatable bag 232 in the pad box is now to be inflated, and for this purpose mechanism mounted on the rear of the machine is provided. As best shown in Fig. 8, the mechanism comprises a reservoir 484 which is filled to the level determined by a test cock 486 by pouring water into a funnel 488 and opening a cock 490, the level of the water in the reservoir being substantially the same as the upper end of the inflatable pad 232. The reservoir communicates by a pipe 492 with the upper end of a cylinder 494 in which is a piston 496 through which there is a passage 498. From the bottom of the cylinder a flexible hose 500 leads to the inflatable bag 232 so that in the position shown the reservoir communicates freely with the bag. Any air in the system when being first filled is allowed to escape through a valve 502 in the upper end of the bag, the valve being closed when water begins to flow out. When the piston 496 is raised, a stem 504 of a valve 506 engages the top of the cylinder and holds the valve open and, when the piston begins to descend, the stem 504 is released and the valve is closed by a spring 508, thus cutting off communication with the reservoir, the water in the cylinder being then forced into the bag 232.

Below the cylinder 494 is a cylinder I0 in which is a piston 5I2 having a large piston rod 5I4 sliding oil-tight through the head of the cylinder and carrying a crosshead 5I6. A piston rod 5I8 fixed to the piston 496 carries a crosshead 520 which is connected positively to the crosshead 5I6 by tie rods 522 so that pressure fluid admitted to the upper end of the cylinder 5I0 by a pipe 524 will operate the piston 496 to inflate the bag. The piston rod 5I8 has a substantiall watertight fit in the head of its cylinder 494, The piston 5 I 2 is moved up by admission of pressure fluid through a pipe 526 connected to the lower end of the cylinder 5 I0, and the pistons 464 are moved up by pressure fluid admitted through pipes 528 connected to the lower ends of the cylinders 466. Of course much less power is required to push these pistons up than to move them down. Hence the use of large piston rods so reduces the eflective area of the lower sides of the pistons that it is practical to utilize fluid at the same pressure per square inch to move the pistons up as is used to move them down.

The valves and fluid-operated devices which remain to be described are located in the casing I4 and, since it is their connections with each other and not their actual physical locations in the machine that are important, they are best shown diagrammatically as in Fig. 8. The pump I0, driven by its motor I2, pumps oil from the sump 24 through a line 532 to the pressure-control valve I3 and thence through a line 534 to the right-hand side of the machine and through a pipe 536 to the left-hand side. When pressure in the lines 534, 536 builds up to a pressure determined by the tension of a spring 538 the tension of which may be changed b turning a screw 540, a conical valve 542 lifts and allows oil to flow through an outlet pipe 543 to the sump 24. Pressure fluid in the line 534 passes through a 14 treadle-operated valve 544 to a line 548 having a branch 548 which supplies oil to raise two pistons 550 each of which engages, but is not connected to, a check valve 552. The pistons raise and hold open the check valves against their springs 554, allowing the lines 482 leading to the tops of the bail-operating cylinders 466 to exhaust the oil therefrom, as will be later explained.

The line 546 leads to a cylindrical valve casing 556 and supplies pressure fluid to actuate a piston 558 having a stem 560 the end portion 562 of which is reduced to form a bearing for a valve member 564 and to form a shoulder to limit movement of said member under the influence of a compression spring 556. The valve member 564 comprises a disk-like portion fitting the bore of the cylinder 556 and guiding fingers 512 integral therewith which externally fit the cylinder 556 and have passages between them so that, when the member is pushed to the left against the spring 566 by pressure fluid, the fluid can pass from an inlet pipe 514 between the fingers 512 to either of two outlets. one to the pipe 524 and the other to a pipe 516. When there is pressure against the piston 558, as shown in Fig. 8, the valve is held open so that fluid can exhaust freely through the pipe 524 of the inflating mechanism. When there is no pressure against the piston 558, the spring 566 holds the valve closed, the disk-like portion of the member 584 being then within the bore of the cylinder 556; the spring 566, however, can be overcome and the valve opened b fluid entering the valve by the pipe 514. Under the conditions being described, the valve will be held open by pressure in the line 546. This line connects with the line 526 and with the two lines 528 so that the piston 5I2 and the pistons 464 are all held up.

Pressure fluid in line 534, without passing through the valve 544, goes via a line 580 to a timing valve 582 and via a flexible hose 584 to a booster mechanism 586. From the line 580 fluid passes through the valve 582 and via a line 588 to a timing cylinder 590 in which is a piston 582 having a piston rod 594. A screw 596 is threaded through the end of the cylinder opposite the piston rod to adjustably limit leftward movement of the piston and hence the volume of fluid the cylinder will contain. A compression spring 598 urges the piston toward the right, the piston rod 594 when fully projected engaging a latch to be described.

In order to allow the forepart gages to move into contact with the sole, the treadle spring I88 and the spring 2I6 have to be overcome as well as the mask plate springs 236 and the spring 3I2 which retracts the bail stop 330. Also, in the final depression of the treadle, the strong spring I58 may have to be further tensioned to allow the gages to be locked in by the button 222. Thus, the continual depression of the treadle in the course of a. days work is onerous. Accordingly, mechanism is provided to substantially relieve the operator of this labor. The mechanism comprises a piston 690 having a piston rod 602 pivoted to a lug 604 on the frame and a cylinder 606 having at its upper end an arm 608 pivoted to an inner arm 6I0 of a lever ful crumed on a shaft 6I2 fixed to the frame, an outer arm 6I4 being pivoted to the bar I56. Attached to the bar I14 is a bracket 6I6 connected by a pin 6I8 to an arm 620 of a lever fulcrumed on the shaft 6I2, its other arm being pivoted to a slide valve 622 arranged to admit pressure fluid from the flexible hose 584 either above or below the piston 600 and, as shown in Fig. 8, it

is admitting pressure fluid to the lower side of the piston 'to hold the cylinder down. When the treadle I16 is first depressed to allow the gases to come in, the bar I14 moves down slightly relatively to the bar I56 because of the pin-andslot connection at I12. This movement rocks the lever 620 to lift the valve 622 sufficiently to admit pressure fluid from the flexible hose 584 to the upper side of the piston 600, causing upward movement of the cylinder 606 and therefore clockwise rocking movement of the lever 6I0, 6I4 to depress the bar I56 by power, the fluid below the 'piston 600 being exhausted through an exhaust pipe 6I5 over the sump 24 When the treadle is released, the spring 2I6 lifts the bar I14 and rocks the lever 620 counterclockwise. thus shifting the valve 622 to the position shown in Fig. 8 so that the fluid above the piston can exhaust through an exhaust pipe 6I1 to the sump and pressure fluid is again admitted below the piston, but the cylinder cannot move down because the lever 6I0, GM and the bar I56 are locked by the button 222. When the button is released, the boost:r mechanism will assist the springs I88, 2I6 in removing the gages from operative position if pressure has not been applied to the shoe.

Assuming now that, as already described, the Iorepart gages have been allowed to move into sole-engaging position by the first depression of the treadle I16, that a, shoe has been located on the sole and that the

abutments

334, 362 have been swung into position over the shoe, the treadle I16 is depressed a second time, causing the dog 200 to engage and depress the bar 204. This bar has a pin-and-slot connection to an arm 630 of a lever fulcrumed at 632, the pin being held at the bottom of its slot by a tension spring 634 connected at one end to the arm 636 and at the other end tothe bar 204 depression of which will, through the spring 634, turn the arm 630 clockwise and another arm 636 thereof in the same direction. The arm 636 is normally held against a fixed stop 638 on the frame by a tension spring 640 connected at one end to a pin on the bar 204 and at the other to a fixed part of the machine. The arm 635 is slotted at its inner end to receive a pin on the outer end of a lever 642 fulcrumed at 644 to fixed ears on the frame, its inner end being pivoted to a latch plate 646 pivoted to a stem 648 or the treadle valve 544, the stem being held raised by a tension spring 650 connected to the outer arm of the lever 642 at one end and to the frame at the other. The pin-and-slot connection between the bar 204 and the lever 630 and the spring 634 provide a yielding connection to pre-- vent undue strain from being applied to the valve mechanism by depression of the treadle. The valve stem 648, when fully depressed, is held down by a pivoted spring latch 652 which is in the path of the piston rod 594. Through the connections described, the second depression of the treadle I16 shifts the valve stem 648 downwardly where it is locked by engagement of the latch 652 with a projection on the latch plate 646. In this position of the valve the line 546 is exhausted through a pipe 654 to relieve pressure on the lower sides of the bail pistons 464 and of the piston 5I,2 of the inflating mechanism. Pressure is also relieved on the pistons 550 to release the check valves 552 to closure by their springs and to relieve the piston 558 so that the spring 566 will move the valve member 564 against the shoulder on the stem 562 so that In this position of the valve stem 646 the pressure-supply line 534 is connected to a line 658 leading to a sequence valve 660 in which is a shiftable member 66I having a small piston 662 at the lower end and a larger piston 663 at the upper end, the member 66I being chambered to receive a spring 664 the tension of which may be varied by turning an adjusting screw 655. In the position shown in Fig. 8, the line 514 can exhaust through ports 668 at the lower end of the spring chamber to the exhaust line 610 and, when the valve stem 648 is depressed, pressure fluid from the line 658 can pass around between the

pistons

662, 663 to a pipe 612 leading to the top of a dearating tank 614 which contains enough oil to fill the cylinders 466 and their connecting lines when pressure is applied to the bails and is for the purpose of allowing air or other gas dissolved or entrained in the oil a chance to work out and pass through the line 658 which, when the valve stem 648 is in the position shown in Fig. 8, connects with an exhaust line 615. The tank, since it is located below the pipe 612, always remains full of oil. From the bottom of the tank 614 a line 616 leads to the check valves 552 which are nowheld yieldingly closed by their springs 654. Pressure fluid, however, overcomes the springs and goes through these valves to the lines 482 leading to the upper sides of the pistons 434 to operate the

bails

332, 360 and apply pressure to the shoe. The line 616 is connected to a line 618 having a constriction at 680 and leading to a fluid-operated plunger 682 arranged to engage a projection 684 on the button 222. By the time considerable pressure has been applied to the shoe enough oil will have passed through the constriction 680 to operate the plunger 682, release the button 222 and allow the forepart gages to be retracted by their springs. As pressure on the shoe builds up, the pressure on the large piston 663 of the sequence valve will become enough greater than that on the piston 662 to overcome the spring 664, causing the piston to rise and connect the line 658 with the line 514 leading to the valve 556, where pressure on the member 564 will overcome the spring 566 allowing fluid to pass both to line 524' and to line 516; that passing through the line 524 operates the piston 5I2 to inflate the pad and that passing through the line 516 shifts at s ool-shaped piston 685 of the timing valve 582 against a spring 686 until arrested by a pin 688, thus cutting ofi the supply line 500 and connecting the line 588 of the timing cylinder 590 with a small orifice 690. In this orifice is a rod 692 of a size and shape to allow slow passage of oil from the cylinder 590, thus determining the time it will take for enough oil to be forced out of the cylinder 590 by reaction of the spring 598 to allow the piston rod 594 to strike the latch 652 and release the valve stem 648, thus allowing the

springs

640, 650 to reset the valve stem in its initial position. This time may be varied by changing the amount of oil initially admitted to the cylinder, that is, by ad justing the screw 596.

If, for any reason, it is desired to release the pressure upon the shoe without waiting for the predetermined time to elapse, the rod 692 is partly withdrawn, the inner end of the rod being made smaller or cut away so that when partially withdrawn the oil may be released quickly from the cylinder 590 and hence-the pressure quickly connected by a link 186 to'an arm 182 of a rocker member 184 carrying the slabbed-off shaft 228 and operated by the releasebutton 226. Operation of the button 226 to release the gages before pressure is applied to the shoe will, of course, operate the rod 692 but that has no effect since at that time the spool-shaped piston 685 will be raised by its spring 686.

To prevent the heel end of the sole from sticking to the shoe rearwardly of the breast line, a spring-steel plate 1|0 (Fig. 4) having radial slots 2 extending outwardly from a notch 1 l4 therein is provided, the plate being connected to a plastic sheet H6 which is secured to the inner edge of the U-shaped member 388. The plastic sheet is flexible enough to permit lifting of the plate 118 when a sole is being placed on the pad and has sufficient resilience when released to assume a position over the sole before the shoe is placed upon it. I A pressure gage I (Figs. 1 and 6) is suitably connected to the lower end of the cylinder 494 to indicate the pressure towhich the bag 232 is subjected.

Supposing the parts of the machine to be in the positions shown, its operations may be briefly summarized as follows. The motor l2 will be started to operate the pump I8 whicl pumps pressure fluid, for example oil, from th sump 24 through the pressure-control valve l3 to the lines 534 and 536, the line 534 supplying the right side of the machine operation of which is being described. The operator places a right sole on the pad at the right-hand side of the machine. He may place it with the ends of the ball line adjacent to the gages I06, I08 or he may place it in the V-shaped opening formed by the plates H2 and N3 of the sole toe gage. He then depresses the treadle I16 to take up the lost motion between the bars I14 and I56, whereupon the valve 622 is operated to admit pressure fluid above the piston 680, causing upward movement of the cylinder 686 and consequently downward movement of the bar I56 to move the gages toward the sole. If the sole is located too far toeward, the toe gage will move it rearwardly and the ball-

line gages

686, 608 will move toward each other and engage the sole substantially at its widest part, that is, at the ends of the ball line. I

engage the ends of the breast line of a sole of the length determined by the position of the toe gage; also, the plate 1l0 which is located over the sole was positioned lengthwise of the shoe automatically with its free edge substantially at the breast line of the sole. The operator moves the slide M2 by its handle M4 to cause the breastline gages to engage the sole or this may have been done earlier in the procedure. The operator having removed his foot from the treadle, now places a right shoe upon the sole with its toe end against the shoe toe gage I23 and, it may be, with the outer end of the ball line in engagement with the shoe gage H8. If now, due to distortion of the sole, it is not located centrally of the shoe, downward pressure of the shoe upon the inclined surface 402 of the shoe gages at the breast line causes the breast-line gages to move bodily to the right or left against one or the other of the springs 426 and causes the sole to be properly located with respect to theshoe. The operator now grasps the handle 364 and swings the bail 368 toward him, at the same time swinging the handle 364 toward the right to bring the heel abutment 362 laterally over the cone of the last. The bail 332, upon release of compression on the spring 489 by movement of the bail 368, now swings by gravity toward the heel end of the shoe until arrested by the stop pin 330 which locates the toe abutment 334 properly with respect to the shoe irrespective of its length and irrespective of the tipped position of the forepart of the pad box about its pivot 36.

Upon release of the treadle, the dog 288 was moved into position to depress the bar 284. The operator now depresses the treadle I16 a second time, shifting the valve stem 648, thus furnishing pressure fluid to the sequence valve 668 through which it passes to force the fluid in the tank 614 through the check valves 552 into the upper ends of the pistons 464, causing the abutments to be lowered to press the shoe and sole firmly against the pad, fluid at the same time passing through the constriction 880 to operate the plunger 682 to release the button 222 and permit the forepart gages to be withdrawn from operative position. When suflicient pressure has thus been applied to the shoe, the piston of the sequence valve 668 moves upwardly, admitting pressure to the line 514 leading to the valve 564 which is now held closed by its spring. The pressure fluid opens the valve and passes through the line 524 to the upper side of the piston 5 I2, causing it to move down and force the water in the cylinder 494 into the pad to inflate it and apply final uniform pressure to the shoe bottom. During inflation of the pad, pressure fluid passes also through the line 516 to depress the plunger 685 of the timing valve 582, thus cutting oil the supply oif pressure fluid to the cylinder 590 and connecting the cylinder with the small orifice 698 through which the oil in the cylinder is forced by reaction of the spring 598 until the piston rod 594 strikes the latch 652 and releases the valve stem 648, whereupon the parts are returned to initial position in which pressure fluid is supplied through the

lines

546 and 548 to open the check valves and to the

lines

528 and 526 to move upwardly the pistons 464 of the balls and the piston 5 I 2 of the inflating mechanism. There being no pressure now in the line 516, the timing valve plunger 685 is raised by its spring, permitting pressure fluid from the line 588 to again flow to the cylinder 590 and hold back its piston against the spring 598. The mechanism for assisting the operator during the first depression of the treadle is continuously supplied with pressure through the flexible connection 584.

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

1. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, a toe gage arranged for movement heelward of the pad to engage the sole, a pair of gages for engaging the sole near its heel and on opposite sides thereof, and variable connections between the toe and the heel gages for causing toewardv movement of the heel gages in predetermined 'ratio to the movement of the toe gage toward the heel end of the pad.

2. In a cement sole-attaching machine, the

combination of a pad to receive an unattached sole, a toe gage arranged for movement heelward of the pad to engage the sole, a pair of gages for engaging the sole near its heel end on opposite sides thereof, and connections between the toe and the heel gages for causing toeward movement of the heel gages as the toe gage moves toward the. heel end of the pad, the movement of the heel gages being in a predetermined ratio to the movement of the toe gage.

3. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, a pair ofgages for engaging a sole in the vicinity of the breast line, said gages being movable longitudinally of the pad, and means engaging the toe portion of the sole for determining the amount of bodily movement of said gages toward the toe end of the pad.

4. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, a pair of gages for engaging the sole in the vicinity of the breast line, said gages being movable bodily longitudinally of the pad, movable bodily against yielding resistance transversely of the pad and movable equally and oppositely, manually operated means for moving the gages toward and from each other, and means controlled by the position of the toe end of the sole for determining the position of the breast-line gages 1ongitudinally of the sole.

5. In a cement sole-attaching machine, the combination of a pad to receive anunattached sole, a gage for the toe end of the sole arranged for bodily movement longitudinally of the pad,-

gages for engaging the heel portion of the sole in the vicinity of the ends of the breast line arranged for bodily movement longitudinally of the pad, and connections between the toe and heel gages for causing mutual approach of the gages.

6. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, a gage for the toe end of the sole arranged for bodily movement longitudinally of the pad into and out 'of operative position, a gage for the li'ee l portion of the sole arranged for bodily movement longitudinally of the pad, connections between the .toe and heel gages for, causing mutual approach of the gages, and said connections including means to allow the heel gage to remain in the position longitudinally of the pad to which it has been moved when the toe. gage is withdrawn from operative position.

7. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, a toe gage arranged for movement heelward of the pad to engage the sole, a gage for engaging the sole near its heel end, connections between the toe gage and the heel gage for causing toeward movement of the heel gage as the toe gagev moves toward the heel end of the pad, and means whereby more or less of the movement of the toe gage is communicated to the heel gage.

8. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, 2. gage for the toe end of the sole arranged for bodily movement longitudinally of the pad, a gage for the heel portion of the sole arranged for bodily movement longitudinally of the pad, and connections between the toe and heel gages for causing mutual approach of the gages, the toe gage being movable away from the sole without affecting the position of the heel gage.

9. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, a gage for the toe end of the sole arranged for bodily movementlongitudinally oi the pad into and out of operative position, gages for engaging the heel portion of the sole in the vicinity of the ends of the breast line-arranged for bodily movement longitudinally of the pad, and connections between the toe and heel gages for causing mutual approach of the gages, said connections being constructed and arranged to allow the breast-line gages to remain in the position longitudinally of the ad to which they have been moved when the toe gage is. withdrawn out of operative position.

10. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, a pair ,of equally and oppositely movable gages for locating the fore-part of a sole placed on the pad by engaging the sides thereof, a floating toe gage movable toward the sole located by the side gages and having oppositely inclined surfaces to find the toe end of the sole, and equally andop'positel-y movable gages to engage the sole in the vicinity of the ends of the breast line, said breast-line gages being movable bodily lengthwise of the pad.

11. In a cement sole-attaching machine, the combinationof a pad to receive a sole, a pair of side gages movable equally and oppositely in rectilinear paths to engage a sole at its widest part. and equally and oppositely movable gages for engaging the sole in the vicinity of the breast line, the breast-line gages being movable longitudinally of the sole with respect to the side gages to accommodate soles of varying length.

12. In a cement sole-attaching machine, the combination of a pad to receive a sole, a floating gage for engaging the toe end of the sole at opposite sides, thereof, equally and oppositely movable gages for engaging the sole in the vicinity .ofthe ends of the breast line, means for moving the toe gage longitudinally of the pad, means responsive to resistance to movement of the sole for locking the toe gage in sole-engaging position, equally and oppositely movable gages for engaging the sole in the vicinity of the breast line, and connections between the toe gage and the breast-line gages for moving the breast-line gages bodily toward the toe gage in conjunction with the movement of the toe gage toward the sole.

13. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, equally and oppositely movable gages to engage the edge face of the sole in the vicinity of the ball line to locate the sole centrally with respect to the pad, a toe gage arranged for movement laterally and longitudinally of the pad to find the toe end of the sole, means for locking the toe gage in operative position, breast-line gages movable bodily longitudinally of the pad and movable oppositely toward eaclirbther, and means controlled by the operative position of the toe gage for determining the position of the breast-line gages longitudinally of the pad.

14. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole with its ball line in predetermined position on the pad, equally and oppositely movable gages to engage the edge face of the sole in the vicinity of the ball line to locate the sole centrally with respect to the pad, a toe gage arranged for movement laterally and longitudinally of the pad to find the toe end of the sole, means for locking the toe gage in operative position, breast-line gages movable bodily longitudinally of the pad and movable oppositely toward each other, means controlled by the operative position of the toe gage for determining the/position of the breastline gages longitudinally of the pad, means for moving the breast-line gages toward each other, and means for varying the position assumed by the breast-line gages longitudinally of the shoe when soles of the same length from toe to ball line butof different length from ball line to breast line are being operated upon.

15. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole placed thereon by an operator with its ball line in a predetermined location longitudinally of the pad, ball-line gages movable transversely of the pad to engage the ends of the ball line of a sole so placed, a toe gage movable heelward of the pad to engage the toe end of the sole, breast-line gages, and connections between said toe gage and breast-line gages including a lengthwise adjustable link for moving the breastline gages toeward of the pad.

16. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole placed thereon by an operator with its ball line in a predetermined location longitudinally of the pad, ball-line gages movable transversely of the pad to engage the ends of the ball line of a sole so placed, a toe gage movable heelward of the pad to engage the toe end of the sole, breast-line gages movable toeward of the pad to positions opposite the ends of the breast line of a sole so located, and manually operated means for moving the breast-line gages equally and oppositely to engage the sole.

17. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, gages for engaging the sole in the vicinity of the ends of the breast line, and means for mounting said breast-line sole gages for movement as a unit transversely of the pad about va center located at the rear of the pad.

18. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, and gages for engaging the sole in the vicinity of the ends of the breast line, said gages being bodily movable transversely of the pad in either direction against yielding resistance.

19. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, and gages for engaging the sole in the vicinity of the ends of the breast line, said gages being bodily movable transversely of the sole in either direction against equal resistance.

20. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, a slide movable in the direction of the longitudinal median line of the shank-and-heel part of the sole, a U-shaped member pivoted to said slide.a pair of arms pivoted to said member and geared together for equal and opposite movement, a sole gage on each arm, and a shoe gage on each arm, said gages being bodily movable transversely of the pad in either direction in response to lateral pressure.

21. 'In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, gages for engaging the sole in the vicinity of the ends of the breast line, shoe gages carried by the breast-line gages and having downwardly and inwardly inclined surfaces, and means mounting said breast-line sole gages for movement transversely of the pad in response to greater pressure of a shoe upon one of the inclined surfaces of the shoe gages.

22. In a cement sole-attaching machine, the

combination of a pad to receive an unattached sole, gages for engaging the sole in the vicinity of the ends of the breast line, shoe gages carried by the breast-line gages and having downwardly and inwardly inclined surfaces, and means for mounting said gages for movement against yielding resistance in response to pressure of the shoe upon the inclined surfaces of the shoe gages.

23. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, gages for engaging the sole in the vicinity of the ends of the breast line, shoe gages carried by the breast-line gages and having downwardly and inwardly inclined surfaces, and means for mounting said gages for movement transversely of the sole in either direction against equal resistance in response to pressure of the shoe upon the inclined surfaces of the shoe gages.

24. In a cement sole-attaching machine, the combination of a pad [or receiving an unattached sole,'a slide movable in the direction of the longitudinal median line of the shank-andheel part of the sole, a U-shaped member pivoted to said slide, a pair of arms pivoted to said member and geared together for equal and opposite movement, and a shoe gage and a sole gage carried by each of said arms.

25. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, a slide movable in the direction of the longitudinal median line of the shank-and-heel part of the sole, a U-shaped member pivoted for lateral movement to said slide, gages on said member, and means for yieldingly holding said member in predetermined position relatively to the slide.

26. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, ball-line gages movable transversely of the pad to engage the sole at the end of the ball line, a floating V-Shaped toe gage movable longitudinally of the pad to find. the toe end of the sole, a V-shaped shoe gage carried by the toe gage, a shoe gage carried by one of the ball-line gages, equally and oppositely movable gages for engagin the sole in the vicinity of the breast line, shoe gages carried by the breast-line gages, said shoe gages having downwardly and inwardly inclined surfaces, and means for mounting said breast-line gages for movement bodily against equal yielding resistance in either direction to enable the rear part of a sole to be located properly with respect to a shoe located by the toe shoe gage and the ball shoe gage.

27. In a cement sole-attaching machine, the combination of a pad to receive an unattached sole, a slide movable in the direction of the longitudinal median line of the shank-and-heel part of the sole, a U-shaped member pivoted to said slide, a pair of arms pivoted to said member and geared together for equal and opposite movement, a sole gage on each arm, and a shoe gage on each arm having a shoe-engaging surface downwardly and inwardly inclined relatively to the pad, said gages being bodily movable transversely of the pad in either direction in response to greater pressure of a shoe on one of said inclined surfaces.

28. In a cement sole-attaching machine, the combination of a pad to receive a sole, a sole toe gage movable toward the sole to engage the sole, a bail having an abutment to engage the forepart of a shoe on the pad, a stop forthe ball, a mask plate movable lengthwise of the pad, sprin3' means for retracting the mask plate, a rockshaft, an arm "on the rockshait for moving the gage, an

amass? toe gage, a pair of ball-line sole gages, spring means for retracting the toe and ball-line gages, a mask plate movable longitudinally of the pad,

spring means for retracting the mask plate, a

rockshaft, connections from the rockshaft to the gages and mask plate to move them in unison, and means forrocking the shaft to cause the toe and ball-line gages to move into contact with the sole and to effect movement of the mask plate longitudinally of the shoe.

30. In a cement sole-attaching machine, the combination of a pad to receive a sole, breast-line sole gages movable longitudinally of-the pad, a mask plate movable lengthwise of the pad, a rockshait, 'an arm on the rockshait for moving the mask plate, a second arm on the rockshaft, connections therefrom for moving the breast-line gages in the opposite direction, and means for rocking the shaft to cause the mask plate to be moved in accordance with the movement of the breast-line gages.

31. In a cement sole-attaching machine, the combination of a pad to receive a sole, a pair of breast-line sole gages, spring means for retracting the gages, a maskplate movable longitudinally of the pad, a rockshaft, connections from the rockshaft to the gages and mask plate to move them toward each other, and means for rocking the shaft to cause the breast-line gages to move toward the mask plate and to efiect movement of the mask plate toward the breastl n s es.

32. In a machine for applying pressure to shoe bottoms, the combination of a pad, abutments movable irom and toward the pad to apply pressure to a shoe thereon, fluid-pressure-operated means; for moving the abutments away from the shoe, fluid-pressure-operated means for moving the abutments toward the shoe, a valve biased to a normal position in which fluid pressur is supplied to the means for moving the abutments away from the shoe, manually operated means for shifting the valve, means for locking the valve in shiifted position in which pressure fluid is supplied to the means for moving the abutments toward the shoe, and means for unlocking the valve.- after a predetermined time has elapsed to permit its return to initial position.

33; In a machine for applying pressure to shoe bottoms, the combination of a pad having a forepart arranged to tip about a transverse horizontal axis midway of the length of the forepart to accommodate the pad for shoes that are to have heels of varying height, a bail arranged to swing longitudinally of the shoe, a toe abutment carried by the bail, a bar movable longitudinally of the forepart of the pad box, means for locating said bar longitudinally of the forepart in accordance with the length of a sole placed on the pad, a pin on the bar, an arm on a fixed axis having a curved slot engaging said pin, and a stop carried by the arm for limiting swinging movement of the bail heelward of the shoe.

34. In a machine for applying pressure to shoe bottoms, the combination of a pad having a forepart arranged to tip about a medial transverse horizontal axis to accommodate pads lor shoes Pm box.

having bottoms of varying longitudinal curvature, means for applying pressure to a shoe to press it upon the pad comprising a bail arranged to swing longitudinally of the shoe, a toe abutment carried by the ball, a stop for arresting movement of the bail, means for automatically setting the stop in accordance with the length of the shoe, and means for varying the position of the stop in accordance with the tipped position of the forepart of the 35. In a machine for applying pressure to shoe bottoms, the combination of a pad, a pad box having a forepart arranged to tip about a medial transverse horizontal axis to accommodate the pad for shoes having bottoms of varying longitudinal curvature, means for applying pressure to a shoe to press it upon the pad comprising a slide movable heightwise of the shoe at each side of the pad box, a bail having each end pivoted to one of the slides so as to swing longitudinally of the shoe, a toe abutment carried by the bail, a stop for arresting movement of the bail, and means for automatically setting the stop properly to locate the toe abutment longitudinally of the shoe irrespectively of the length of the shoe, of the tipped position of the forepart of the pad box and of .the varying position of said slides.

36. In a machine for applying pressure to shoe bottoms, the combination of .a pad having a forepart arranged to tip about a transverse horizontal axis midway of the length of the forepart to accommodate the pad for shoes that are to have heels of varying height, a ball, a toe abutment carried by the bail, a slide pivoted to each end of the bail, a bar movable longitudinally of the forepart of the pad box, means for locating said bar longitudinally of the forepart in accordance with the length of a sole placed on the pad, a pin on the bar, an arm on a flxed axis having a curved slot engaging said pin, and a stop carried by the arm for limiting swinging movement of the bail heelward of the shoe, said slot being shaped and located to cause the bail to be arrested in position properly to engage the shoe notwithstanding adjustment of the forepart of the pad box about its axis and the corresponding varying positions of the slides heightwise of the shoe.

37. In a machine for applying pressure to shoe bottoms, the combination of an inflatable pad to receive a shoe and sole, means for pressing the shoe and sole together, a cylinder connected with the pad, a piston in said cylinder, means for supplying fluid to said cylinder, a second cylinder not communicating therewith, a piston in the second cylinder, means external to the cylinders for connecting the pistons together, and means for supplying pressure fluid to operate the piston of the second cylinder and thereby to operate the piston of the first cylinder and cause inflation of the pad.

38. In a machine for applying pressure to shoe bottoms, the combination of an inflatable pad to receive a shoe and sole, means for pressing the shoe and sole together, a cylinder connected with the pad, a piston in said cylinder, means for supplying fluid to said cylinder, a second cylinder in axial alinement with the first but not communicating therewith, said second cylinder having a head, a piston in the second cylinder, a piston rod of large diameter having a substantially fluidtight fltin the head of the second cylinder, means v 25 and thereby to operate the piston of the first cylinder and cause inflation and deflation of the pad.

39. In a machine for applying pressure to shoe bottoms, the combination of an inflatable pad, means for applying pressure to a shoe on the pad, means for inflating the pad comprising a pair of vertically disposed cylinders with their longitudinal axes in alinement, a piston and piston rod for each cylinder with the rods extending in opposite directions through heads on the cylinders, the upper cylinder being connected at its lower end with the pad and at its other end with a supply of water, a valve in the piston of the upper cylinder opening downward into the cylinder, a spring tending to close the valve, a stem on the valve which engages the cylinder head when the piston is raised to open the valve, and tie rods outside the cylinders connecting the piston rods of the two pistons.

40. In a machine for applying pressure to shoe bottoms, the combination of an inflatable pad, means for applying pressure to a shoe on the pad, means for inflating the pad comprising a pair of cylinders with their longitudinal axes in alinement, a piston and piston rod for each cylinder with the rods extending in opposite directions through heads on the cylinders, one cylinder being connected at its lower end with the pad and at its other end with a supply of water, a valve in the piston of said one cylinder opening downward into the cylinder, a spring tending to close the valve, a stern on the valve which engages the cylinder head when the piston is raised, means connecting the piston rods of the two pistons, and means for supplying pressure fluid either above or below the other piston.

41. In a machine for applying pressure to shoe bottoms, the combination of an inflatable pad, means for applying pressure to a shoe on the pad, means for inflating the pad comprising a pair of vertically disposed cylinders with their longitudinal axes in alinement, a piston and piston rod for each cylinder with the rods extending in opposite directions through heads on the cylinders, the upper cylinder being connected at its lower end with the pad and at its other end with a supply of water, a valve in the piston of the upper cylinder opening downward into the cylinder, a spring tending to close the valve, a stem on the valve which engages the cylinder head when the piston is raised, tie rods outside the cylinders connecting the piston rods of the two pistons, and means for supplying pressure fluid either above or below the lower piston, the lower side of the lower piston having a less effective area for the action of the pressure fluid thereon than the upper side.

42. In a cement sole-attaching machine, the combinationof a pad, a toe gage movable longitudinally of the pad toward and from a sole on the pad, breast-line gages movable longitudinally of the pad, connections between the gages to cause mutual approach and separation of the toe and breast-line gages, a bar connected to the gages, movement of the bar in one direction moving the gages longitudinally of the pad toward the sole and in the other direction moving the gages away from the sole, and a single fluid-pressure-operated means under control of th operator for moving the bar in either direction.

43. In a cement sole-attaching machine, the combination of a pad, forepart gages movable toward and from a sole on the pad, spring means for holding the gages away from the sole, a bar connected to the gages so that movement of the bar will cause movement of the gages toward the sole, said bar being in two parts with lost motion between them, a fiuid-pressure-operated cylinder having a piston, relative movement of the cylinder and piston operating to move the part of the bar directly connected with the gages, a slide valve for controlling the admission of pressure fluid to the cylinder, and a treadle connected to the remote part of the bar, movement of the treadle to take up the lost motion between the parts of the bar operating the slide valve to cause relative movement of the cylinder and piston to overcome the springs and allow the gages to move into operative positions.

44. In a cement sole-attaching machine, the combination of a pad, forepart gages movable toward and from a sole on the pad, spring means for holding the gages away from the sole, a bar connected to the gages so that movement of the bar will cause movement of the gages toward the sole, said bar being in two parts with lost motion between them, a fluid-operated cylinder having a piston and piston rod, the rod being secured on a fixed pivot and the cylinder being connected to the part of the bar connected with the gages, a slide valve for operating the cylinder connected to the part of the bar remote from the gages, and a treadle connected to the other part of the bar, movement of the treadle to take up the lost motion between the parts of the bar operating the slide valve to cause movement of the cylinder to overcome the springs and allow the gages to move into operative positions.

45. In a cement sole-attaching machine, the combination of a pad, sole gages movable on the pad to engage a sole thereon, means for applying pressure to a shoe placed on the sole, a pair of vertical bars depression of one of which causes the gages to move into operative positions, depression of the other of which causes the application of pressure to the shoe, a treadle, and means for connecting the treadle first to one bar and then to the other.

46. In a cement sole-attaching machine, the combination of a pad, sole gages movable on the pad to engage a sole thereon, means for applying pressure to a shoe placed on the sole, a pair of vertical bars depression of one of which causes the gages tomove into operative positions, depression of the other of which causes the application of pressure to the shoe, and means for connecting the treadle first to the bar which causes the gages to move in and on the next depression of the treadle connecting the treadle to the bar which controls the application of pressure to the shoe.

47. In a cement sole-attaching machine, the combination of a pad, sole gages movable on the pad to engage a sole thereon, means for locking the gages in operative positions, means for applying pressure to a shoe placed on the sole, a pair of vertical bars depression of one of which causes the gages to move into operative positions and become locked, depression of the other of which causes the application of pressure to the shoe and release of the gages, and means for connecting the treadle first to the bar which causes the gages to move in and on the next depression of the treadle connecting the treadle to the bar which controls the application of pressure to the shoe and release of the gage-locking means.

48. In a machine for applying pressure to shoe bottoms, the combination of a pad, means for locating a sole on the pad, means for applying pressure to a shoe placed on the sole, a first notched vertical bar movement of which causes the locating means to move into operative position, means for locking the bar in depressed position, -a second notched vertical bar movement of which controls application of pressure to the shoe and release of the first bar, a treadle lever, a pair of dogs carried by the treadle lever, and means for causing the dogs alternately to engage the notches in the vertical bars so that upon the first depression of the treadle the first bar will be depressed to cause movement of the locating means into operative position and to cause the bar to be locked, and the second depression of the treadle will operate the second bar to cause application of pressure to the shoe and release of the first bar.

49. In a machine for applying pressure to shoe bottoms, the combination of a pad, means for locating a sole on the pad, means for applying pressure to a shoe placed on the sole, a first notched vertical bar movement of which causes the locating means to move into operative position, means for locking the bar in depressed position, a second notched vertical bar movement of which controls application of pressure to the shoe, a treadle lever between the bars, a spindle forked at each end passing through the lever, each fork embracing one of the bars, a first dog pivoted in one fork of the spindle and a second dog pivoted in the other fork of the spindle, means for holding the dogs yieldingly in spaced relation, and a spring for holding one of the dogs toward. the first bar so that upon the first depression of the treadle the first bar will be depressed to cause movement of the locating means into operative position and cause it to be locked, release of the treadle causing the notch in the first bar to cam the first dog out of the notch in the first bar and cause the second dog to be moved into the notch of the second bar so that the second depression of the treadle'will operate the second bar to cause application of pressure to the shoe.

50. In a machine for applying pressure to shoe bottoms, the combination of an inflatable pad, fluid-pressure-operated means for applying pressure to a shoe on the pad, and a sequence valve through which the pressure fluid passes to apply pressure to the shoe, said valve acting after a predetermined pressure has been applied to the shoe to cause the pad to be inflated.

51. In a machine for applying pressure to shoe bottoms, the combination of an inflatable pad, fluid-pressure-operated means for applying pressures to a shoe on the pad, fluid-pressure-operated means for inflating the pad, and a valve through which pressure fluid passes to apply pressure to the shoe, said valve being shifted upon application of a predetermined pressure to the shoe to cause operation of the fluid-pressureoperated means for inflating the pad.

52. In a machine for applying pressure to shoe bottoms, the combination of an inflatable pad, means forinflating the pad, a pressure line leading thereto, fluid-pressure-operated means for applying pressure to a shoe on the pad, a valve comprising a cylinder, spaced connected pistons of unequal size movable in the cylinder, a spring biasing the pistons in the direction from the large to the small piston, and a pressure line conducting fluid pressure between the pistons to apply pressure to the shoe, the pistons shifting against the spring when a predetermined pressure on the shoe is attained to open the line leading to the iitlatingmeans and causing the pad to be ina ed.

53. In a machine for applying pressure to shoe bottoms, the combination of an inflatable pad, means for inflating the pad, a pressure line having a check valve leading thereto, fluid-pressureoperated means for applying pressure to a, shoe on the pad, a valve comprising a cylinder, spaced connected pistons of unequal size movable in the cylinder, a spring biasing the pistons in the direction from the large to the small piston, a pressure line having a check valve therein conducting fluid pressure between the pistons to the means for applying pressure to the shoe, the pistons shifting against the spring when a predetermined pressure on the shoe is attained to open the line leading to the inflating means and causing the pad to be inflated, and means for opening said check valves when the pressure is to be released.

54. In a machine for applying pressure to shoe bottoms, the combination of an inflatable pad, fluid-pressure-operated means for inflating the pad, a line leading to said inflating means, fluidpressure-operated means for applying pressure to a shoe on the pad, a valve comprising a cylinder, spaced connected pistons of unequal size movable in the cylinder, a spring biasing the pistons in the direction from the large to the small piston, a pressure line having a check valve therein conducting fluid pressure between the pistons to the means for applying pressure to the shoe, the pistons shifting against the spring when a predetermined pressure on the shoe is attained to open the line leading to the inflating means and causing the pad to be inflated, and fluid-pressureoperated means for opening said check valve when fluid pressure is exhausted from the fluidpressure-operated means.

55. In a machine for applying pressure to shoe bottoms, the combination of an inflatable pad, fluid-pressure-operated means for inflating the pad, a line having a check valve therein leading to said means, fluid-pressure-operated means for applying pressure to a shoe on the pad, a valve comprising a cylinder, spaced connected pistons of unequal size movable in the cylinder, a spring biasing the pistons in the direction from the large to the small piston, a pressure line having a check valve therein conducting pressure fluid between 1" the pistons to apply pressure to the shoe, the

pistons shifting against the spring when a predetermined pressure on the shoe is attained to open the line leading to the inflating means and cansing the pad to be inflated, and fluid-operated means for opening the check valves when fluid pressure is exhausted from the fluid-pressureoperated means.

56. In a machine for applying pressure to shoe bottoms, the combination of an inflatable pad, means for inflating the pad, fluid-pressure-operated means for applying pressure to a shoe upon the pad, a treadle valve biased to a position in which pressure is not applied to the shoe, a latch for holding the valve in pressure-applying position, and a sequence valve having diflerential pistons between which fluid passes to the fluid-pressure-operated means for applying pressure to the shoe, said sequence valve shifting upon application of a predetermined pressure to the shoe and supplying pressure fluid to operate the means for inflating the pad.

57. In a machine for applying pressure to shoe bottoms, the combination of an inflatable pad, fluid-pressure-operated means for applying pressure to the shoe, fluid-pressure-operated means for inflating the pad, a timing cylinder having a'