US1945640A - Foxing treating machine - Google Patents

Description

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L. E. JAMES FOXING TREATING MACHINE Filed Aug. 11, 1931 Feb. 6, 1934.

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Feb. 6, 1934. L, E, JAMES 1,945,640

F'oXING TREATING MACHINE Filed Aug. 11, 1931 6 Sheets-Sheet 2 Flg. 2.

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FOXING TREATI NG MACHINE Filed Aug. ll, 1931 6 Sheets-Sheet 6 Patented Feb. 6, 1934 STATES PATENT? OFFICE FOXING TREATING MACHINE Application August 11, 1931. Serial No. 556,351

45 Claims.

This invention relates to machines for operating upon the foxing areas of rubber-soled shoes of the tennis type, is applicable, for example, to machines for applying cement to the foxing areas,

or to machines for laying a foxing strip upon said areas, and is illustrated as embodied in a machine of the type disclosed in the application or Sidney J. Finn, Serial No. 395,346, filed September 26, 1929, for foxing treating machines.

In the manufacture of rubber-soled shoes of the so-called tennis type, which usually have canvas uppers, it is the practice to apply a stripe of cement to the lower marginal portion of the shoe upper, known as the foxing area, and then to apply to the cement-coated foxing area a rubber strip known as a foxing strip, after which a rubber outsole is pressed against the bottom of the shoe, the marginal portions of the outsole being secured to the foXing strip.

o The machine illustrated in the above-mentioned application is of the type in which the point of operation of a tool for treating the foxing area of a shoe is caused to be transferred around the foxing area by a relative movement between the tool and the shoe, and to this end the machine shown has provision for turning the shoe relatively to a tool which is mounted on a swinging arm and is maintained in Contact with the shoe regardless of variations widthwise of the shoe in the peripheral contour of the foxing area. In the operation of applying a foxing strip to a shoe by hand it is customary to overlap this strip, to avoid any gaping at the joint and to strengthen the construction, the practice of dif- 3 ferent manufacturers varying as to the amount and position of this overlap.

ln accordance with one 'feature of the present invention there is provided, in a machine of the general type referred to above, improved means for eiiecting a predetermined overlap of the foxing strip. l'n the illustrated machine, in which the shoe is rotated, the foXing applying tool presents the free end of the foxing to the shoe at a point located on one side of the heel portion of the shoe at a given distance from the extreme rear end of the shoe; and thereafter the shoe is given one revolution and a fraction of a second revolution sufficient to overlap the foxing from the point of beginning to a point on the other 00 side of the heel portion of the shoe at the same distance from the rear end of the shoe as is the point of beginning.

It is desirable that provision be made for variably controlling the extent of this overlap. To this end, and in accordance with another feature of the invention, such means is provided. In the illustrated machine the construction is such that the extent of the overlap varies with changes in the initial angular position of the shoe support in its horizontal path of revolution; and means are provided for controlling the overlap and at the same time varying this initial position so that the operator may see, when he adjusts the initial position of the shoe support, just what extent of overlap will be produced.

In machines of this general type, it is common to back oil the applying tool from the shoe at the completion of a cementing or a foxing laying operation upon one shoe and to move it into contact with a succeeding shoe prior to the beginning of the operation upon that shoe. Under these conditions the position of the tool at the end of an operation upon a shoe of the smallest size will be a considerable distance from that occupied by the tool at the end of an operation upon a shoe of the largest size. It is not desirable that the tool be backed off each time to the position required for the largest sized shoe since the great 'majority of shoes are of the smaller sizes. According, therefore, to another feature of the invention, the tool is backed off always to the same distance from the shoe regardless of its size; and, if the next shoe to be operated upon is of a much larger size, the operator may push the tool farther away.

Furthermore, it is important that the springpressed tool of the illustrated machine shall be automatically brought gently into contact with a piece of work at the commencement of an operation, and in accordance with still another feature the invention provides an improved construction of backing-off mechanism arranged to accomplish this end.

In the machine of the Finn application Where the tool is mounted on a swinging arm held against the periphery of the shoe, compensating mechanism is provided for changing the relation of the swinging tool carrying arm to the axis about which the shoe is rotated to compensa/te for the changing radius of the peripheral contour of the foxing area of the shoe. In that machine this is effected by moving the pivot point of the tool carrying arm through an irregular path, and the novel backing-off mechanism of the present invention is constructed and arranged to maintain an operating connection between the tool and said backing-off mechanism irrespective of the path of movement of the pivot or the position of the tool support.

These and other features of the invention will be best understood from a consideration of the following description taken in connection with the accompanying drawings, in which Fig. 1 is a front elevation of the complete machine with parts broken away and in section;

Fig. 2 is a plan View of the machine when embodying a ioxing laying tool;

Fig. 3 is a horizontal section on the line III-III of Fig. 1 and showing the actuating parts of the overlap mechanism;

Fig. 4 is a vertical section` through the movable pivot of the tool carrying arm;

Fig. 5 is an elevation with parts broken away and in section showing a portion .of the overlap mechanism of Fig. 3;

Fig. 6 is a detail in vertical section on the line VI-VI of Fig. 5;

Fig. 7 is a horizontal section on the line VII-VII of Fig. 1 showing the backing-on mechanism;

Fig. 8 is a vertical section through the upright shoe-carrying spindle and associated parts;

Fig. 9 is a View of a portion of the backingolf mechanism shown in Fig. 7 with the parts in another position on a larger scale;

Fig. l() is a front elevation of these parts; and

Fig. 11 is a fragmentary view similar to Fig. 9 to show the parts in still another position.

A shoe 10 to be treated is held in an upright position in the machine between an upper clamp 12, 14 and a lower clamp 16 including a detachable shoe supporting plate 76. Provision is made for rotating the shoe around a vertical aXis by a synchronized movement of these clamps. Before the machine is set in motion, the shoe is located between the clamps by means of locating devices 18 and 20 engaging the toe and heel ends, respectively, when drawn down by a rod 28 connected to a treadle 30, and they are arranged above the operating zone so that they are out of the way. The bell cranks 22 which support the shoe centering devices are pivotally mounted upon a casting 40 (Fig. 2) forming part of a bracket 42 (Fig. 1) the lower end of which is bent inwardly and clamped by means of a bolt 44 on the upper end of a sleeve 46 (Fig. 8) which passes down through a bearing 48 integral with the frame 32 and through a lower frame bearing 50, said sleeve being concentric with the axis of rotation of the shoe, and being normally still during the operation of the machine but capable of adjustment when the overlap mechanism is being set. The bracket 42 is provided with a thin plate 52 (Fig. 2) having a toothed edge 54 for engagement with a worm 56 journaled in the frame of the machine and provided with a hand-wheel 58 at the upper left corner of said frame. By turning this hand-wheel the operator adjusts the position of the shoe locating and clamping devices and the starting position of the shoe so as to determine the amount of overlap, as will be later described. These locating devices are withdrawn from engagement with the shoe before the machine starts and the shoe is depressed to its operating zone before it starts to rotate.

The shoe is supported with its bottom facing downwardly and is turned to present successive portions of the foxing area to a treating tool such as the foxing laying tool 501 illustrated in Figs. 1 and 2. In order to allow for the changing contour of the shoe, the tool is mounted upon an extension of a tool carrying armV 260 capable of being swung in and out and up and down and the Varying speed and contour is compensated by mechanism to be later described arranged to move the pivot point on which the tool carrying arm swings in a predetermined path.

The upper clamping devices 12, 14 are mounted on a shaft 72 journaled in an overhanging arm 60 which extends outwardly from a portion 62 slidably mounted in a guide standard 64 on the frame 32. Within this upright portion 62 is a shaft 94 which is connected to the shaft 72 by a chain and is arranged to be actuated by a drive shaft 108 whereby the upper clamp is rotated in synchronism with the lower clamp. The latter is driven through a hollow shaft by a connection through gears 92 to which power is supplied through the same drive shaft 108. Tilting movement is imparted to the shoe, as described in the Finn application, so as to present all parts of the foxing area 1l at approximately the level of the operating tool by means of a rod 11() which lifts the shoe suporting plate 76 for pivotal movement around a cross bolt 84. On the upper end of this rod 11() is a roller 116 (Fig. 8) which, when the rod 110 is lifted, is brought to bear against the bottom side of the shoe supporting plate 76.

The tilting movement is carried out in timed relation to the rotation of the shoe by means of a xed cam 120 bolted to a bracket 122 at the bottom of the machine. On the upper surface of the cam 120 rides a roller 124 on an arm attached to the lower end of the upright rod 110, this arm 128 fits in a notch at the lower end of a sleeve 130 which is journaled in a bushing in the frame 32 and is splined at its upper end to the double spiral gear 92 by means of which the shoe supporting sleeve is driven.

Drive elements The machine as illustrated is driven by power supplied from an electric motor (not shown) having a shaft 152 which transmits power through a pinion and annular gear (not shown) to an aligned shaft on which is mounted a worin. This worm meshes with a worm gear 156 (Fig. 1) directly connected to the driving half 160 of a clutch. This clutch is of the one-revolution type and is substantially like the construction shown in Letters Patent ofthe United States No. 1,011,- 903, granted December 19, 1911 upon an application of Arthur Bates. The driven half 162 of the clutch is keyed to a clutch shaft 158 and when a starting treadle 164 is depressed the two parts 160 and 162 are locked together for a single rotation. Their engagement will be interrupted by means of a knock-off lever 166 acting automatically to apply a band brake 168. Carried on the clutch shaft 158 is a pinion which meshes with a large gear 172 keyed to a cam shaft 174. An internal cam face for operating the knock-off lever 166 is provided on the outside lateral sury face of said gear 172.

Intermittent gear drive Means involving an intermittent gear is employed for giving a constant angular velocity to the shoe and at the same time confining the time of its rotation to about two-thirds of the cycle of the cam shaft. This allows time intervals before and after the rotation of the shoe for other power operations such as jacking the shoe, backing on the tool-carrying arm and returning the shoe to the starting point. Power to operate the machine is transmitted from the cam shaft 174, on which the large gear 172 is mounted, to a jack shaft 176 by means of a mutilated or intermittent gear carried on said cam shaft 174 which meshes with a pinion 180 (Fig. 3) on said jack shaft 176. In order to avoid the shock which would result from the contact of the end tooth of the intermittent gear 178 with the pinion 180, there is provided a cam 182 attached to the inside of the large gear 172 (Fig. 3) which cam has an open cam track to receive a roll carried on the end of a short arm 188 which is keyed to and rotates with the pinion 180. The cam track 184 is so designed that it gives a slight acceleration to the pinion 180 just before the end tooth of the intermittent gear contacts therewith and when the action of the intermittent gear is finished it decelerates the pinion 180 in much the same fashion. On this jack shaft 176 which carries the pinion 180 and which is journaled in bearings 190 (Fig. 3) and 192, provided in the frame of the machine, is splined a worm 194 which meshes with the lower toothed portion 196 of the double spiral gear 92 (Fig. 8) carried on and driving the upright sleeve 80. Through this connection power is provided for rotating the lower shoe clamp 16. The upper toothed portion 198 of this double spiral gear 92 meshes with a spiral gear 200 which is keyed on the drive shaft 108 also journaled in the frame of the machine and carrying at its extreme left-hand end the skew gear 106 which meshes with a similar skew gear 104 on the upright shaft 94, as shown in Fig. 3. Through this connection a drive is provided for the upper shoe clamp l2-14.

Thus in general the power supplied by the electric motor is transferred through the motor shaft 152 to the clutch shaft 158 which is connected by gears to drive the cam shaft 174. This in turn provides an intermittent drive for the jack shaft 176 which is directly connected by the worm 194 and spiral gear 196 to the upright sleeve 80 carrying the lower shoe clamp 16. A continuation of this gear connection through the gears 198, 200 to the drive shaft 108 `provides for a supply of power to the upright shaft 94 by means of which the upper shoe clamp 12-14 is rotated in synchronism with the lower clamp.

Foxing overlap mechanism It is common shoe-factory practice in the manufacture of rubber-soled shoes of the tennis type to so apply the foxing strip that the ends overlap. Some manufacturers overlap the ends of the strip at the inside of the shoe and others at the rear of the shoe. When the illustrated machine is used for applying foxing it is arranged to overlap the ends of the foxing strip at the rear of the shoe so that the ends of the strip lie equally distant irom the extreme end of the shoe upon opposite sides thereof. The overlap mechanism now to be described is arranged to control the rotation of the shoe so that the shoe may ce rotated as far as desired, from one complete revolution, at which point of adjustment there will be no overlap, to an adjustment in which the ends of the strip overlap each other by several inches. Adjustment is eiected by rotation of the hand wheel 58 used for varying the angular position oi the shoe locating elements. It should be noted that rotation of this hand wheel 58 also causes a rotation of the shoe support or clamps (in the manner to be later described) and thus enables the operator to see by inspection just where the overlap will start by noting the position of a foxing applying roll 204 (Fig. 2) with respect to a shoe thus angularly -displaced with respect to the frame 32. In considering the shoe shown in outline in Fig. 2 the operator may adjust the hand wheel 58, for example, so that the applying roll 204 of the foxing laying tool 501, is opposite the point l A on the shoe.

In the foxing laying tool which is illustrated incidentally in this application, the tool carrying arm 260 is provided with an extension frame 500 (Figs. 1 and 2) carrying the applying roll 204. Near the forward portion of this frame the foxing strip F is delivered to this applying or laying roll 204 by means of a belt 504 passing over said laying roll and a pulley 502 pivoted at the extreme rear end of the extension frame 500. This foxing laying tool is guided up and down to cause it to apply the stripexactly at the desired level by means of a shoe contacting disk (not shown) at the -outer end of an arm 514. The foxing strip F is pressed into position by means of a pressure roll 542 (Fig. l). f the machine is started with the shoe in the position shown in Fig. .2 the overlap mechanism will be effective automatically rst to carry the shoe counterclockwise so that the applying roll is opposite the point B to start laying a foxing strip F. The point B is equidistant with the point A from the extreme rear end C. This movement takes place before the foxing laying tool including the applying roll 204 is brought into contact with the shoe. After this the shoe is given a complete rotation clockwise and in addition a fractional rotation suicient to bring the applying roll to the point A. The mechanism is arranged to superimpose this additional turning movement i upon the turning movement provided .by the normal driving mechanism which would of its own accord turn the shoe for one complete revolution'. The additional movements to produce the overlap are imparted through the worm 194 ."T

(Fig. 3) of the normal driving mechanism, without in the least disturbing the connections of that mechanism, by sliding said worm 194 along a spline 206 on the jack shaft 176. The worm 194 is extended at 195 and has integral with it a grooved collar 208. Extending into the groove oi this collar at opposite sides thereof are rolls 210 and 212 (Fig. 5) carried by a forked member 214 pivoted on an upright stud 216 which is mounted in a portion of the frame 32 of the 'i -f machine. At the upper end of this forked member 214 is provided a roll 218 received within a hollow cam 22() having parallel spaced sides and integral with the lower end of an upright stud 222. Carried on and keyed to the upper end or" this stud is a forked crank 224 joined by a long link 226 to a cani lever 228. The cam lever 228 has a broad upright web forrigidity and is pivoted about a xed point, being actually mounted upon a sleeve 280 surrounding an upright rod if.

232 which is journaled in the frame of the machine and is utilized, as will be later described, for an entirely separate purpose. The lever 228 carries on its under side a cam roll 234 working in a cam track 236 formed about the periphery of a cam 240 which is mounted on the left-hand end of the cam shaft 174, as seen in Fig. 1. The cam track 236 is so designed as to give the crank 224 on the hollow cam 220 a sharp quick niovef ment from the position indicated in Fig. 3 to a lower position an amount angularly equally distant from a horizontal line through the center of the stud 222. The cam track then operates to return the crank 224 and with it the cam 220 to the position shown in Fig. 3. As shown in Fig. 3 the parts are so located that the cam roll 218 on the forked member 214 is directly below the pivot stud 222 of the hollow cam 220. Consequently no sliding movement will be imparted to the worm 194 with the parts in this adjusted position. However, the upright stud 222 carrying the hollow cam 220 is pivoted in a slide 242 which is cross-shaped at its left-hand end 244 and is received within a correspondingly shaped guideway formed in a bracket 246 bolted between the bearing member 190 and the frame 32. The right-hand end of the slide 242 is provided with a T-slot 248 as shown in Fig. 6 to receive a block 250 secured by a screw 252 to the frame 32 of the machine. The side of the slide 242 is provided with a rack meshing with a segment 254 clamped by a bolt 256 (Figs.r3 and 8) to the outer sleeve 46 surrounding the upright shoe rotating sleeve 80.

It will be recalled that the toothed flat plate 52 (Fig. 3) mounted on the bracket 42 which carries the locating arms is also clamped to the sleeve 46 and that the position of this plate 52 and hence the position of the bracket 42 is determined by adjustment of the hand wheel 58. Thus to control the overlap mechanism, the slide 242 is operated by the same hand wheel 58 which positions the shoe locating arms (and, as will be seen, the shoe clamps). Thus if the slide 242 is adjusted to the right in Fig. 5 and Fig. 3, then when the machine is started the rotation of the cam 246 along with the other mechanism of the machine will act through the hollow cam 220 to slide the worm 194 rst in one direction from its normal position, this movement taking place rather quickly1 and then will slowly bring it back to its normal position, thus superimposing on the normal rotation of the shoe holding clamps a movement such as that set forth previously to cause an overlapping of the ends of the foxing strip S from the point A to the point B. Since this overlapping is symmetrical with respect to the back of the shoe it is correct for either rights or lefts. This superimposition of one movement on another is permitted by the well understood relation of the worm 194 and the spiral 'gear 196 operating about axes at right angles to each other. A sliding movement of the Worm 194 will turn the gear 196 quite regardless of the rotational Vmovement imparted to said gear 196 through the rotation of the worm 194.

It is also by virtue of these connections that the operation of the hand wheel 58 is eiective to move the upper and lower shoe clamps with the shoe centering devices 18, 20. This will be better understood by considering the parts shown in Fig. 3. If the operator turns the hand wheel 58, in moving the plate 52 connected directly to the locating members, he will also cause a rotation of the segment 254 which will move the slide 242 to the right, for example, and dragging the hollow cam 220 along the roll 218 which is attached to the forked member 214 will cause said forked member to swing and thereby to slide the worm 194 along the jack shaft 176 to turn the gear 196 of the double spiral gear 92 and hence through the connections previously described to turn both the upper and the lower shoe clamps.

Raising the upper shoe clamp A cam track 239 on the left-hand side of the cam 240 is utilized for raising the upper shoe clamp supporting arm 60. To this end a lever 241 (Fig. 1) is pivoted upon the frame and is provided with a cam roll (not shown). The outer end of this lever 241 is connected by an upright link 247 to another lever (not shown) pivoted in the frame of the machine. The other end of this lever is connected by a long upright link 253 to the bracket 255 (Fig. 1) attached by bolts to the inner side of the upright slide 62. The cam track for actuating the lever 241 is designed to pull dov/n the arm 60 when the treadle 164 is depressed, thereby to depress the shoe and the lower clamp 16 against the tension of the spring 82. This operates to push the shoe below the level of the centering devices 18 and 20 and brings the foxing area 11 of the shoe opposite the operating tool.

Compensatz'ng mechanism Inasmuch as the shoe is rotated about its central axis at a constant angular velocity the tool 501 which is carried at the outer end o1c the swinging arm 260 would operate along parts of the shoe having a varying radius and consequently the tool would move along the foxing area of the shoe at a varying speed. To overcome this, a compensating mechanism is provided by means of which a spindle 262, upon which the C-shaped tool carrying arm 260 is pivotally mounted, is made to follow a path (such, for example, as an elongated flattened ellipse) such that in combination with the rotation of the shoe it will give an approximately uniform progressive movement of the tool relative to the shoe.

The compensating mechanism is also arranged and designed to maintain the drag of the work arm 26() substantially constant and at a small acute angle from a tangent to the shoe at the point of contact between the tool and the shoe. This arrangement maintains the various auxiliary members associated with the tool in proper relation to the shoe. If the arm 260 were mounted on a Xed pivot and held by a spring in contact with the shoe the angular relation between the arm and the shoe would be disturbed most when the tool progressed around the toe or the heel of the shoe. The mechanism acts to accelerate relative progressive movement between the side of the shoe and the tool at the heel and toe ends. The compensating mechanism herein illustrated embodies the principle of the corresponding very similar mechanism shown and described in Letters Patent of the United States No. 1,863,747, granted June 21, 1932, upon the prior application of Sidney J. Finn, for improvements in foXing applying machines.

Referring now to Figs. 4, 7 and 8 with occasional reference to Fig. 1, it is seen that the spindle 262 upon which the C-shaped arm 260 swings on ball bearings is carried at the outer end of a toggle (Fig. 7) comprising a triple webbed hinge member 270 (Fig. 8) joined by pivot pin 272 to another hinge arm 274, the hub of which surrounds and rotates freely upon the outer sleeve 46. The tool-carrying arm 260 is urged to swing clockwise about the hinge member 270, as viewed from above (Fig. 7), by a spring 261 connecting said member 270 and the arm 260. The hub of this arm 274 is positioned vertically upon that sleeve by a frame member 50 (Fig. 8) and a collar 276 which is pinned to the sleeve 46. Because of the considerable vertical extent of each of the hinge members 270 and 274 of this toggle a very considerable rigidity is imparted to the spindle 262 to avoid tipping thereof from the vertical. The position of the spindle 262 in a horizontal plane is determined jointly by a double link 278 and by an eccentric operated link 282. A shiitable center pin 286 (Fig. l) is carried in an arm projecting laterally from a plate 286 one end of which slides in a box 288 formed at the upper end of a pivot. The other end or the plate 286 is journaled on a crank pin carried by the lower arm of a double crank 294 mounted on an upright shaft 293 (Figs. 3 and 7) and rotated by a worm 295 (Fig. 3)V meshing with a worm gear 296 splined on the drive shaft 168. The design is such that the crank 294 is rotated twice for each rotation of the shoe. The double crank 294 has an upper arm integral therewith, and positioned, at a substantial angle from the crank arm 294. A housing 360 slotted above and below to receive square blocks 364 (Figs. 4 and 8) loosely journaled on the upright spindle 262 is pivoted at its other end upon a pin carried by said upper crank arm. Within the housing 366 gears are provided for rotating an eccentric surrounded by the strap of the eccentric link 282. At each rotation ci the drive shait 108 the double crank 264 will be rotated twice to give two complete reciproca-tions to the slide 286 carrying the movable center pin 286 and to impart two complete reciprocations to the eccentric link 282 and the combined eiect upon the tool carrying arm spindle 262 will be to move said spindle along an elongated path.

The con `ensating mechanism herein illustrated and Just described in part may readily be adjusted by means or a hand lever 320 pivoted at -j its lower end on the frame of the machine to care more readily for shoes of different sizes and more particularly for shoes of different ranges such as mens, womens and childrens.

The lever 326 is provided at its upper end with a spring-pressed locking pin operated by a handle knob 32.3 so that it may be secured in any one of a plurality of adjusted positions. At an intermediate pcrtion of the lever there is provided on its rear side a groove receiving a roll 336 (Fig. 3) carried on a housing 332 (Figs. 3 and 7). The housing surrounds and slides upon a sleeve 334 (Fig. 3) carried in the frame 32 of the machine which is coaxial with the drive shaft 168. At its other end the slide 832 has a bearing in a suitable recess 336 cut in the frame of the machine. This housing 332 encloses the gear 296 which is splined on the drive shaft and the meshing gear 295 pinned to the vertical shaft 293 oi the double crank to adjust the position of the elongated path with respect to the center ci rotation of the shoe support so that the machine will readily care for shoes of radically different sizes. The housing 332 is provided with a tail 338 (Fig. 3) sliding underneath a gib 346 which is screwed to the bearing block 196 to prevent rotation of the housing around the center of the drive shaft 108. Y

Backing ofi mechanism Since the machine is intended to operate upon shoes oi radically dierent sizes which are rotated around a xed vertical axis and since the tool is supported on a swinging arm 266 which is springpressed to carry it into engagement with the shoe, it will be seen that there may be a wide distance between the stopping point of the tool on a large sized shoe and the point of engagement of the tool with the next shoe which may be only a childs shoe. Provision must also be made for moving the tool away from the shoe at the completion of the operation and holding it, against the tension ofthe spring 261, to permit removal of the shoe and its replacement by another. Accordingly, there is provided a backing-offA mechanisrn shown in Figs. l, 7, 9, 16, and l1, which is arranged to rotate the tool-carrying arm 266 around its spindle 262 at the completion of a cycle to carry the tool a few inches away from the completed shoe and then at the beginning of a cycle to bring it gently against the next shoe which is positioned in the machine. Accordingly a small gear 356 is secured by screws to the tool-carrying arm 260 directly in line with the spindle 262. Meshing with this gear is a large loose idler 352 which is pivoted on the hinge pin 272 between the toggle arms 276 and 274 and this idler meshes with the vteeth of a smaller gear 354 loosely pivoted on the sleeve 46 (Fig. 8) which surrounds the axis of rotation of the shoe. This gear 354 is integra-l with a ratchet 356 which is engaged at intervals by a cam controlled rnenrber to move the tool away from the shoe and later upon the commencement of a succeeding operation of the machine to bring the tool gently against the shoe. To this end a pawl 353 is provided which is pivotal- 1y mounted at the outer end of an arm 366 and pressed by a spring 362 t-oward the ratchet. The arm 360 has a hub 3.64 which,as may be seen in Fig. 8 is directly above the ratchet 356 and which swivels on the sleeve 46 as does the ratchet. Secured to the arm 366 is a link 366 connected to a lever 368 which is secured to the upper end of an upright rod 232 pivoted in bearings on the frame of the machine. On the lower end of this rod is mounted a cam lever l376 (Figs. 1 and 3) having a cam roll 372 to engage an open cam track formed by inserts 374 placed within a recess 376 formed in the right side oi the cam 246 (Fig. 1) which is at the left-hand end of the cam shaft 174. A spring 377 between the frame and an arm 379 integral with the cam lever 376 holds the roll 372 against the inserts 374. Thus for every rotation of the cam shaft, which corresponds with one rotation or" the shoe, the cam lever 376, and hence the upper lever 368, is given a complete oscillation to carry the pawl 356 countercloclzwise around the center of the sleeve46, as viewed in Fig. 7, to move the tool away from the shoe and then clockwise to allow the tool to be carried inward against the shoe under the tension of theV spring 261.

' By properly shaping the cam the movement away from the shoe may be carried out rapidly and Vmovement into engagement with the shoev ferent sections of the top of the machine.r The l spindle 262 is given its major support by the toggle arms 276, 274 and is guided by the compensating mechanism. The idler gear 352 interposed between the gear 356 on the tool-carrying arm and the gear 354 on the ratchet 356 insures a constantconnection of the gear 356 and the ratchet 356 regardless of the position of the spindle 262. Provision is made then for keeping the pawl 358 out of engagement with the ratchet 356 until a predetermined point in the cycle of the machine has been reached so that it will back the tool off a fixed distance regardless of the movements of the tool carrying arm or the size of the shoe being treated. To this end the machine is provided with a iixed shield 380 depending from thecover rco izo

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portion 48 of the frame of the machine and with a swinging shield 382 depending from the rear side of an arm 384 pivotally mounted at 386 on the top .cover 48 and having at the extreme end of the shield 382 a pivoted spring-pressed iiap 388. The pawl 358 is provided with an upwardly extending cam roll 390 which rides over the iixed shield 380 and the swinging shield 382 and pushing the flap 388 aside allows the point of the pawl 358 to drop against the ratchet 356. During the remaining movement of the pawl carrying arm 360, the ratchet 356 is turned, and hence through the connections described, the tool-carrying arm 260 is swung around its spindle 262 to back the tool off from the shoe a xed distance where it is held by the cam-controlled pawl 358 at the close of the machine cycle.

When the machine is started again the cam control for the swinging pawl carrying arm 360 brings the cam roll 390 against the other side of the ilap 388 and swings the shield 382 away from the ratchet allowing the tool on the tool-carrying arm 260 to be brought gently under the tension of the spring 251 against the side of the shoe. When the tool has touched the shoe, the pawl 358 continues its movement, sliding over the teeth of the ratchet 356. As soon as the cam roll 390 on the pawl 358 has been retracted far enough it rides up on the fixed shield 380 leaving the tool held by the spring 261 against the shoe. The roll 390 remains in that position until a time after the shoe has completed its rotation and it is necessary for it again to move forward to back the tool off from the shoe. This backingoi action is regardless of the size of the shoe and always moves the tool a xed amount away from the shoe. If a larger shoe is placed in the machine after work has been carried out on a small shoe then the operator simply pushes the tool aside to permit the mounting of the shoe by manually engaging a handle 392 (Fig. 1) on the toolcarrying arm. Ihe ratchet will slip under the pawl 358 and the tool arm will be held by the coacting pawl and ratchet in its new position as the machine stands at rest.

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

1. In a foxing laying machine, a shoe support, means for laying a strip of foxing on a shoe on said support, and machine-operated means for automatically effecting a predetermined relative movement between the shoe support and the laying means to carry the point of operation of the laying means once around the shoe and then to overlap the foxing strip.

2. In a foxing laying machine, a shoe support, means for laying a strip of foxing on a shoe on said support, and machine-controlled means for effecting a predetermined relative movement between the shoe support and the laying means to carry the point of operation of the laying means once around the shoe and then to overlap the foxing strip equal amounts upon opposite sides of the extreme end of the shoe.

3. In a foxing laying machine, a shoe support, means for laying a strip oi foxing on a shoe on said support, means for effecting relative movement between the shoe support and the laying means to carry the point of operation of the laying means once around the shoe and then to overlap the foxing strip, and adjustable means for controlling the extent of the overlap.

4. In a oxing laying machine, a shoe support,

means for laying a strip of foxing on a shoe on said support, means for effecting relative movement between the shoe support and the laying means to carry the point of operation of the laying means once around the shoe and then to overlap the foxing strip equal amounts upon opposite sides of the extreme end of the shoe, and adjustable means for controlling the extent of the overlap.

5. In a foxing laying machine, a shoe support, means for laying a strip of foxing on a shoe on said support, driving means effecting relative movement between the shoe support and the laying means to carry the point of operation of the laying means once around the shoe and then to overlap the foxing strip equal amounts upon opposite sides of the extreme end of the shoe, and adjustable controlling means varying the extent of the overlap, said adjustable means being operable to a position where the overlap is Zero.

6. In a foxing laying machine, a foxing laying tool, a shoe support movable to carry the margin of a shoe on the support past the tool, and means operative in a predetermined cycle for moving said shoe support tocause the traversing movement to cover more than one revolution whereby the ends of the foxing laid will be overlapped.

7. In a foxing laying machine, a foxing laying tool, a movable shoe support mounted for traversing movement in a predetermined cycle to carry the margin of the shoe past the tool, and operator-controlled means effective to pre-control said v cycle thereby to extend said traversing movement around a fraction of one revolution more than the complete periphery of the shoe to overlap the ends of the foxing.

8. In a machine for operating upon the margins of shoes, a tool support, a shoe support movably mounted for traversing movement to carry the margins of the shoe past the tool, and operator-controlled means eiective to extend the traversing movement from a deiinite point at one side of the extreme end of the shoe completely around the shoe and then to a corresponding point on the other side of the shoe equidistant with said first point from the extreme end of the shoe.

9. In a foxing laying machine, a foxing laying tool, a shoe support, driving means for said support to carry the margin of the shoe past the tool, and means controlling said driving means constructed and arranged to cause the shoe to turn in one direction more than one complete revolution and to turn in the other direction a fraction of a revolution.

10. In a foxing laying machine, a laying tool, a movably mounted shoe support, means for turning said shoe support backward a distance equal to the desired overlap and for turning said shoe support forward to carry the shoe past the laying tool one complete revolution and an additional amount equal to the overlap.

11. In a foxing laying machine, a laying tool, a shoe support, power-operated means including a one-revolution clutch for turning said shoe support to carry the whole margin of the shoe past the laying tool, and automatic means for superimposing upon said turning movement an additional movement equal to the desired overlap of the foxing strip.

12. In a foxing laying machine, a laying tool, a shoe support, power-operated means for turning said shoe support to carry the whole margin of the shoe past the laying tool, and automatic means for superimposing on said turning movement a reverse fractional rotation and an addivic ifi

tional forward rotation, which latter movement is equal to the amount of the overlap.

13. In a foxing laying machine, a laying tool, a shoe support, power-operated means including a one revolution clutch and a worm and gear drive ior turning said shoe support to carry the margin of the shoe past the tool, and means for moving said worm along its axis to superimpose upon the turning movement anadditional movement without interfering with the driving relation of the worm and gear.

14. In a faxing laying machine, a shoe supporting member, a ioXing laying member, means for producing relative movement between the members to lay the roxing on the shoe, means for adjusting one of said members into diierent initial positions, and means positioned by said adjusting means for controlling the extent of the relative movement.

l5. In a oXing laying machine, a shoe support, a foxing laying tool, means for rotating the support and for bringing it to rest, means for varying the initial angular position of the support in its path or" rotation, and means the setting of which is determined by this initial angular position for controlling the extent of the rotation imparted to the shoe support.

16. In a oXing laying machine, a foxing laying tool, a movable shoe support, power-operated means for moving said support to carry the margin or the shoe past the laying tool more than one complete revolution to cause the ioxing strip to be applied about the whole periphery of the shoe and to overla and operator-controlled means for adjusting the amount of said overlap.

17. In a faxing laying machine, a foxing laying tool, a movable shoe support, power-operated means for moving said support to carry the marof the shoe past the laying tool more than one complete revolution to cause the foxing strip to be applied about the whole periphery of the shoe and to overlap, and operator-controlled means for determining the initial position I" the shoe thereby to control the amount of the overlap.

18. In a foxing laying machine, a relatively nired tool support, a shoe support mounted for turning movement to carry the margin of the shoe past the tool through one complete revolution lus an additional overlap, and means for adiustahly controlling the position of said overlap upon the shoe.

19. In a foXing laying machine, a relatively xed forintT laying tool, a movable shoe support constructed and arranged to carry the margin of the shoe past the tool, operator-controlled means for adjusting the starting relation of the tool and the shoe, and power-operated means for moving the shoe support constructed and arranged to carry the foxing completely around the shoe and then to overlap an amount equal to twice the distance between the starting point or the operation and the adjacent extreme end of the shoe.

2G. In a ioxing laying machine, a foxing laying tool, a movable shoe support comprisingtop and bottom clamps, means for moving said clamps in synchronism to carry the point of contact between the tool and the shoe completely around the shoe and then an additional amount to cause the ioxing strip to overlap, and operator-controlled means for adjusting said top and bottom clamps in synchronism constructed and arranged also to control the amount of overlap.

2l. In a foxing laying machine, a foxing laying tool, a movable shoe support constructed and arranged to carry the shoe past the tool, poweroperated means for moving said shoe support through more than one complete revolution, said means comprising a fixed cam and an adjustable cam, and operator-controlled means for adjusting said latter cam thereby to control the amount of overlapping movement.

22. In a foxing laying machine, a foxing laying tool, a movable shoe support constructed and arranged to carry the shoe past the tool, poweroperated means for moving said shoe support through more than one complete revolution, said means comprising an adjustable cam, and operator-controlled means for both adjusting said cam and varying the starting position of the shoe support thereby to control the amount and position of the overlap.

23. In a machine for treating shoes, a tool, a swinging tool support, a spring normally holding said tool in various positions in Contact with the work, and cam-operated means operatively connected to the tool for backing the tool away from the work at the completion of an operation constructed and arranged to move the tool rapidly a xed distance from the shoe irrespective of the position of the tool in the machine at the completion of the operation.

24s. In a machine for treating shoes, a tool, a swinging tool support, a spring normally holding said tool in various positions in contact with the work, and cam-operated means operatively connected to the tool during part of the cycle of the machine for backing the tool away from the work at the completion of an operation constructed and arranged to move the tool rapidly a xed distance from the shoe irrespective of the position of the tool in the machine at the completion of the operation, said means being also constructed and arranged to return the tool gently into contact with the work at the commencement of the next operation.

25. In a machine for treating shoes, a tool, a movable support for said tool, tool backing-oir means mounted for movement over a predetermined range, and normally separated means movable into cooperative relation to, establish connection between said backing-od means and said tool Vsupport. at any position of the tool support thereby to back the tool away from the work a predetermined distance.

26. In a machine for operating upon the margins of shoes, a shoe support, a tool support, said supports being mounted for relative traversing movement to carry the point of operation of the tool around the margin of the shoe, and means for backing the tool away from the shoe a predetermined distance from the shoe irrespective of the size of the shoe.

27. In a machine for operating upon the margins of shoes, a shoe support, a tool support, said supports being mounted for relative traversing movement to carry the point of operation of the tool around the margin of the shoe, and automatically operated means for backing the tool away from the shoe at the completion of the operation a predetermined distance from the shoe irrespective of the size of the shoe.

2S. In a machine for treating the margins of shoes, a movable shoe support, a pivoted tool support, means for causing relative movement between said .supports to carry the point of operation of the tool around the shoe, and machine-operated means for automatically swinging said tool support to back the tool away f from the shoe at the completion of the operation a predetermined distance from the shoe irrespec tive of the size of the shoe.

29. In a machine for treating the margins of shoes, a rotatable shoe support, a pivoted tool support, a spring for swinging said tool support to hold the tool in Contact with the shoe, and automatic, power-driven means for moving the tool support against the tension of said spring Lo carry the tool a predetermined distance away from the shoe at the completion of an operation.

30. In a machine for treating the margins of shoes, a rotatable shoe support, a pivoted tool support, a spring for swinging said tool support to hold the tool in contact with the shoe, and automatic, positively-operated means for moving the tool support against the tension of said spring to carry the tool a predetermined distance away from the shoe at the completion of an operation and to hold it there pending removal and replacement of the work.

31. In a machine for treating shoes, a tool, a swinging tool support, a spring normally holding said tool in contact with the work, and camoperating means for swinging the support to back the tool away from the work at the completion of an operation constructed and arranged to move the tool support a xed distance from the shoe irrespective of the position of the support at the completion of the operation.

32. In a machine for treating shoes, a tool, a swinging tool support, a spring acting on said support to hold the tool in` contact with the shoe during the operation of the machine, pawl-andratchet mechanism for moving said tool support to carry the tool away from the shoe at the completion of the operation, and means for holding said pawl away from the ratchet during the period of operation of the tool upon the shoe.

33. In a machine for treating shoes, a tool, a swinging tool support, a spring to hold said tool in contact with a shoe presented thereto, a ratchet operatively connected to said support to move the tool away from the shoe, a cam, a lever provided with a pawl associated with said ratchet and controlled by said cam to move the support upon rotation of the cam, and means for holding said pawl out of engagement with said ratchet during the application of the tool to the shoe.

34. In a machine for operating upon the margins of shoes, a rotatable shoe support, a tool support pivoted upon a movably mounted spindle, means for shifting said spindle bodily to control the relation of the tool support to a shoe being treated, a ratchet rotatable upon a fixed center, means for operatively connecting said ratchet to said tool support irrespective of the position of its spindle, a pawl associated with said ratchet, automatically-operated pawl-carrying means to move the ratchet, and means for holding said pawl out of engagement with said ratchet during the cycle of operation of the tool upon the shoe.

35. In a machine for operating upon shoes, a movable shoe support, a movably mounted tool, means for moving said tool into contact with a shoe, pawl-and-ratchet mechanism connected to said tool for moving the tool away from the shoe at the completion of an operation, means for moving said pawl forward to carry the tool away from the shoe and returning it to allow the tool to return to contact with the shoe, and means for holding said pawl out of engagement with the ratchet during a portion of said forward movement constructed and arranged to be ineffective during the return movement of the pawl.

36. In a machine for treating shoes, a tool, a swinging tool support, a pivot upon which said too-l support is mounted, means for guiding said pivot in an irregular path, backing-off mechanism constructed and arranged to carry the tool away from the Work at the completion of an operation, and rigid means for maintaining an operating connection between said tool and said backing-ofi' mechanism irrespective of the movement of the pivot.

37. In a machine for treating shoes, a frame, a tool, a movable tool support, means for guiding said support for movement in 4an irregular path the position of which with respect to the frame may be varied, a machine-operated backing-oli mechanism for moving the tool away from the work, and a driving connection between said support and said backing-off mechanism effective irrespective of the position of the support.

38. In a machine for treating shoes, a frame, a tool, a swinging tool support, a toggle-like bracket carrying said support to permit movement of the pivot point thereof in an irregular path with respect to said frame, a backing-ofi mechanism movable in a fixed path with respect to the frame, and means for maintaining an operating connection between the backing-off mechanism and the tool support irrespective of thc-I position of the latter.

39. In a machine for treating shoes, a frame, a tool, a tool-carrying arm, means for supporting said arm in the frame comprising hinged members one of which is pivoted on the frame and the other of which is pivotally connected to the tool-carrying arm, a backing-oir mechanism pivoted on the frame concentrically with the pivot of one of said arms, a gear on said tool-carrying arm, an idler pivoted at the hinge point of said arms meshing with said gear, and means for connecting said idler to the backingoiT mechanism whereby the connection is maintained between the backing-off mechanism and the tool-carrying arm irrespective of the position of the latter.

40. In a machine for treating shoes, a tool, a movable tool support, backing-off mechanism operatively connected to said tool support including a pawl and ratchet, means for causing forward movement of the pawl in one direction eventually to back the tool away from the work and movement in the other direction to bring the tool into contact with the work; and a shield adapted to be interposed between said pawl and ratchet to separate the two during a portion of said movement.

4l. In a machine for treating shoes, a tool, a movable tool support, backing-ofi mechanism operatively connected to said tool support including a pawl and ratchet, means for causing forward movement of the pawl in one direction eventually to back the tool away from the work and movement in the other direction to bring the tool into contact with the work, and a two-part shield adapted to be interposed between said pawl and ratchet to separate the two during a part of said movement in one direction constructed and arranged to separate them for a diierent period during movement in the other direction.

42. In a machine for treating shoes, a tool, a movable tool support, backing-off mechanism operatively connected to said tool support including a pawl and ratchet, means for causing forward movement of the pawl in one direction eventually to back the tool away from the work and movement in the other direction to bring the tool into contact with the work, and a twopart shield adapted to be interposed between said pawl and ratchet during a portion of said movements, one part of said shield being mounted for displacement during movement in one direction.

43. In a machine for treating shoes, a tool, a movable tool support, backing-01T mechanism operatively connected to said tool support including a pawl and ratchet, means for causing forward movement of the pawl in one direction eventually toback the tool away from the work and return movement in the other direction to bring the tool into contact with the work, a two-part shield interposed between said pawl and ratchet one part of which is mounted for displacement, and means for displacing said movable shield upon return movement of said pawl.

44. In a machine for treating shoes, a tool, a movable tool support, backing-off mechanism operatively connected to said tool support including a pawl and ratchet, means for causing forward movement of the pawl in one direction eventually to back the tool away from the work and movement in the other direction to bring the tool into contact with the work, and a movably mounted shield adapted to be interposed between said pawl and ratchet to separate the two `during part of said movements. said shield being constructed and arranged for displacement during another part of said movements.

45. In a machine for treating shoes, a tool, a movable tool support, backing-off mechanism operatively connected to said tool support including a pawl and ratchet, means for causing forward movement of the pawl in one direction eventually to back the tool away from the work and movement in the other direction to bring the tool into contact with the work, a movably mounted shield adapted to be interposed between said pawl and ratchet. and a guard iiap for saidshield constructed and arranged to cause displacement of the shield upon movement of the pawl in one direction.

LESTER E. JAMES.

Ami)

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