US3305883A

US3305883A - Automatic edge gauge controls for strip attaching machines

Info

Publication number: US3305883A
Application number: US341066A
Authority: US
Inventors: Gerald W Cleversey
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1964-01-29
Filing date: 1964-01-29
Publication date: 1967-02-28
Anticipated expiration: 1984-02-28

Description

Feb. 28, 1967 G. w. CLEVERSEY 3,305,883

AUTOMATIC EDGE GAUGE CONTROLS FOR STRIP ATTACHING MACHINES Filed Jan. 29, 1964 6 Sheets-Sheet 1 '70 ine 74 [nvan for Gerald MC/euerae By his/12. torney Maw Feb. 28, 1967 G. w. CLEVERSEY 3,305,883

AUTOMATIC EDGE GAUGE CONTROLS FOR STRIP ATTACHING MACHINES 6 Sheets-Sheet 2 Filed Jan. 29, 1964 18 02 40 fl W W L n xi -n H VI-xxx Feb. 28, 1967 w, CLEVERSEY 3,305,883

AUTOMATIC EDGE GAUGE CONTROLS. FOR STRIP ATTACHING MACHINES Filed Jan. 29, 1964 6 Sheets-Sheet 5 Feb. 28, 1967 G. w. CLEVERSEY 3,305,883

AUTOMATIC EDGE GAUGE CONTROLS FOR STRIP ATTACHING MACHINES Filed Jan. 29, 1964 6 Sheets-Sheet 4 I =I 22 I H w 212 [/9 2&9 265 200 242 Feb. 28, 1967 w CLEVERSEY 3,305,883

AUTOMATIC EDGE GAUGE CONTROLS FOR STRIP ATTACHING MACHINES Filed Jan. 29, 1964 6 Sheets-Sheet 5 Feb. 28, 1967 G. w. CLEVERSEY AUTOMATIC EDGE GAUGE CONTROLS FOR STRIP ATTACHING MACHINES 6 Sheets-Sheet 6 wmEwRU MQQ @EWSQ QEQMEEQ mEQww QswEmE .FEQQEE QEREQ m: 3 w

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Filed Jan. 29, 1964 mmQ wiliom mw www KEQW mioismq United States Patent C) Filed Jan. 29, 1964, Ser. No. 341,066 Claims. (Cl. 12--20) This invention relates to adhesive attachment of strip material to workpieces. More particularly, the invention comprises a new and improved edge gauge control mechanism for machines operating to apply a rib strip to an insole blank preparatory to the manufacture of Welt shoes. The invention is herein described as embodied in a rib strip attaching machine of the type disclosed in United States Letters Patent No. 3,030,644, dated April 24, 1962, but it will be understood that it is not limited in respect to its applicability to machines of that particular type.

In preparing welt insoles it is desirable that the strip be attached a substantial distance within the margin of the insole throughout the shank portions, that it be attached more closely adjacent to the margin of the insole throughout the ball portion on both sides thereof, and that it be attached about the toe portion of the shoe with an intermediate spacing, that is, intermediate between the spacing of the rib in the shank and in the ball portions of the insole. In the case of sewed seat work, the spacing around the heel area is constant and the same as at the heelward end of the shank portion.

In the past, this variance of spacing was usually accomplished by an adjustable edge gauge having several positions, each of which caused the strip to be attached to the insole at a different distance from the edge of the insole. By careful and skilled manipulation of the gauge position, the operator was able to vary the placement of 'the strip relative to the edge of the insole as desired. However, the proper variance in spacing could not be achieved without the exercise of considerable skill and close attention on the part of the operator, with consequent loss of the advantages of a high rate of production and short training time for new operators.

An object of the invention is to enable a rib attaching machine to produce the desired placement of the strip on the insole automatically and without the need of great skill of the operator. To this end and in accordance with a feature of the invention, there is provided means for 10- cating each insole presented to the machine with relation to a strip attaching and work feeding member, so that this member will attach the strip to the insole at varied predetermined distances from the edge of each insole.

When an insole is placed on the work support, and throughout a strip attaching operation, its edge surface abuts an edge gauge located on the work engaging surface of the support. During the progress of a strip attaching operation, the edge gauge is movable automatically into various positions transversely of the work support to shift the insole thereon relative to the attaching and feeding member to vary the distance of the strip inwardly of the insole edge about the periphery of the insole. The above and other features and advantages of the invention will be more clearly understood from the following description with reference to the accompanying drawings in which:

FIG. 1 is a perspective view of a machine embodying the invention showing the edge gauge, a size input means, a strip speed input means and means for automatically varying the position of the gauge including a cam speed governing means and a portion of a cam means;

FIG. 2 is a front elevation of the size input means, strip speed input means and cam speed governing means;

FIG. 3 is a plan view of the strip speed input means taken along line IIIIII of FIG. 2;

FIG. 4 is a side elevation of the size input means and cam speed governing means;

FIG. 5 is a side elevation showing in detail the face of a circuit disk;

FIG. 6 is a front elevation in section showing the circuit disk and its shaft and support therefor;

FIG. 7 is a plan view partly in section showing the relationship of certain members of the size input means;

FIG. 8 is a bottom sectional view of the circuit disk showing the engagement of an electrical contact with the circuit disk;

FIG. 9 is a plan view of the size input means;

FIG. 10 is a plan view of the cam means showing an insole in operating position, and also showing a heel gauge and the edge gauge;

FIG. 11 is a side elevation of the strip speed input means;

FIG. 12 is a front elevation of the cam means;

FIG. 13 is a plan view of an optional reversing means;

FIG. 14 is a plan view of a ribbed insole illustrating the desired spacing of the sewing rib; and

FIG. 15 is a wiring diagram of an electric circuit which connects the circuit disk with the cam means motor.

The machine is provided with a vertically movable slide 2, to the upper end of which is secured a work support 3 comprising a table 4 in which a mounted a roll 6 arranged to support and assist in feeding an insole to which a strip is to be attached. The strip is progressively fed into engagement with the margin of the insole and pressed thereagainst by a presser and feed foot which also feeds the combined insole and attached strip as described more fully in the aforementioned patent.

The insole is located on the work support 3 with the heel end toward the rear, that is, away from the operator, and the attachment of the strip commences at the heel breast line at one side of the insole and progresses around the periphery of the insole to the heel breast line at the opposite side. For sewed seat work the attachment continues around the heel area.

Referring to FIG. 14, there is shown a welt insole I with an upright sewing rib strip S correctly located thereon. As may be noted, the rib is spaced well inwardly from the edge of the insole I in the shank area X, more outwardly towards the edge in the ball area Y, and again inwardly at the toe area Z, though not so far inwardly as in the shank area X. In sewed seat work the rib extends around the heel area W with the same spacing as at the heelward end of the shank area. The placement of the rib in the heel area W is illustrated in FIG. 14 by dotted line.

In FIGS. 1, 2, 4 and 9 there is illustrated a mechanism for the adjustment of the machine in accordance with the size of insole to be operated upon. This mechanism comprises a size input means 12 attached to a frame member 10 of the machine. The size input means 12 includes a hand crank 14 having attached thereto a crank handle 16. The hand crank 14 is mounted upon a shaft 18 and secured thereto by a locking screw 20 (FIG. 7). The shaft 18 has journaled thereon a cylinder 22 threaded externally throughout its length excepting a necked-down" portion 22' on which is secured an adjusting crank 15 adjacent to the hand crank 14. The adjusting crank 15 has at its outer end a clamp 19 by which the crank may be secured to the hand crank 14 for movement therewith. For purposes explained hereinafter, rotation of the ad justing crank 15 relative to the hand crank 14, when the clamp 19 is released, causes the cylinder 22 to rotate while the shaft 18 remains stationary.

The threaded cylinder 22 carries a block 23 having as an integral part thereof a wedge member 24 and being the rib strip is drawn. portion 75 is an axial extension of a strip speed transmovable axially upon the cylinder 22 in response to the rotation of the cylinder. A pair of

stops

26 and 28 limit the travel of the block 23 upon the cylinder 22. Riding along an edge 30 of the wedge member 24 and movable in a plane transverse to the axis of the cylinder 22 is a wedge follower 32. FIG. 9 shows the relative movements of the wedge member 24, having the edge 36, and the wedge follower 32, the parts being movable from the full line positions to the positions shown in phantom and designated 24', 30 and 32'. The wedge follower 32 is mounted upon a lever 34 (FIGS. 2 and 4) which pivots about a shaft 36. The outer edge of the wedge member 24 rides in a slot 38 provided in a guide block 40 (FIGS. 2 and 9) so that the block is prevented from turning upon rotation of the cylinder 22.

Carried upon the lever 34 and pivotally disposed upon a shaft 42 is a cam speed governing means, designated generally as 44, which provides a rotational output proportional to the size input and the strip speed input, as

will be discussed below. The cam speed governing .means 44 includes a set of bearings 46 (FIG. 6) supporting a disk shaft 48. The disk shaft 48 has secured to one of its ends a circuit disk 50 which carries on its face a printed electrically conductive circuit 51 (FIG. 5). A stud 52 at the top of the cam speed governing means 44 supports a bracket 54 in which are retained a set of three electrical contacts 56 which are maintained in engagement with the circuit disk 50, as shown in FIG. 8.

For driving the disk shaft 48 there is fixedly mounted thereon a ratio output disk 58 (FIG. 2) which may be an integral part of the disk shaft 48. The stud 52 secures a bracket 59 to the top of the cam speed governing means 44. A block and barrel member 60 is disposed between the guide block 40 and the bracket 59. The block portion of the block and barrel member 60 rests in an indentation 41 on the under surface of the guide block 48 while the barrel portion protrudes through an opening in the bracket 59. A spring 62 is disposed about the barrel portion of the block and barrel member 60 and exerts a pressure upon the bracket 59. The downward pressure of the spring 62 tends to pivot the cam speed governing means 44 about the shaft 42 and so exerts a downward force upon the ratio output disk 58.

The ratio output disk 58 is urged by the force of the spring 62 into contact with the horizontal face of a strip speed input disk 64 (FIG. 2). The strip speed input disk 64 is preferably integral with a strip speed input shaft 66 which is journaled in a housing 68. The lower end of the shaft 66 protrudes beneath the housing 68 and has fixedly attached to it by a connecting pin 71 a flywheel-72 having hub portions 70. By means of a set screw 73 there is attached to the flywheel 72 and extending axially therefrom a torsion rod 74 which extends to a strip speed input means designated generally as 76.

A block portion 75 of the strip speed input means 76 is secured to a back plate member 78 (FIGS. 1-3 and 11). Suspended from the block portion 75 is a strip guide block 80 having an open-ended slot 82 (FIG. 11) through which Rotatably retained in the block rnitting wheel 84, which axial extension is attached to the lower end of the torsion rod 74. Pivoted about a stud 86 (FIGS. 3 and 11) on a lug portion 88 of the block portion 75 is a block 90 in which is journaled an axial extension of a pressure wheel 92. The

wheels

84 and 92 are so disposed as to be on opposite sides of the plane of the open-ended slot 82 and so on opposite sides of the strip as it passes through the slot 82. A spring 94 is retained in a block 93 which is secured by a bracket 95 to the block portion 75. The spring 94 exerts a rearward pressure upon the block 90 thereby urging the pressure wheel 92 toward the strip speed transmitting wheel 84.

To assist in adjusting the machine for the size of insole to be operated upon, there is fixedly mounted on the forward end of the shaft 36 (FIGS. 1 and 4) and in front of a plate 96 in which the shaft is journaled, a pointer 98. Fixed to a to plate member 100 is an indicator 102 with indications based upon shoe sizes and which cooperates with the pointer 98 to facilitate quick and easy preparation of the machine for operation upon a particular size of shoe.

Fixed to the after end of the shaft 18 by way of a coupling 104 is a flexible shaft 186 (FIGS. 1, 4 and 9) which transmits the rotary motion of the shaft 18 to a rota'ry-to-linear motion converter 198 (FIG. 10) which positions a heel gauge member 118 in accordance with the size of insole to be worked upon.

Referring now to FIGS. 10 and 12, there is illustrated a mechanism for changing the position of the insole edge relative to the strip attaching device. This mechanism includes a cam means designated generally as 209 mounted on the front of the machine. To the underside of a base plate 201 there is secured an electric motor 282 which drives a generally circular positioning plate 204 and a cam 206. A tbracket 268 is secured to the frame of the machine and retains a two-armed lever 210 pivotally about a stud 212. A first arm. portion 2'14 of the two-armed lever 210 carries at its outer extremity a cam follower 216. To a stud 218 fixed to the upper surface of the base plate 291 there is secured a spring 228' which at its other end is secured to the first arm 214 and maintains the cam follower 216 in contact with the cam 206. A normally closed cut-off switch 222 in the circuit to the motor 202 is fixed to the base plate 201 and has a plunger 224 extending toward the axis of the positioning plate 264 which carries a cooperating switch actuating arm 226 engageable with the plunger 224 so as to open the switch 222 thereby to interrupt power to the electric motor 202.

A second arm portion 215 of the two-armed lever 210 carries at its outer extremity an edge gauge 217 (FIGS. 1 and 10) which moves laterally in track 219, and so toward and away from the strip attaching device, when the arm 215 moves pivotally about the stud 212.

In the periphery of the positioning plate 204 at a point generally opposite the switch actuating arm 226 there is provided a recess 228. Pivotally disposed upon a stud 230 which is retained in the base plate 281 is a lever arm 232. Attached to the outer end of the lever arm 232 is a spring 234 which extends to a stud 236 fixed to the base plate 201. Secured to the side of the lever arm 232 nearest the positioning plate 204 is 2. lug 238 carrying a roller 240 adapted to enter the ref cess 228. The spring 234 urges the lever arm 232 toward the positioning plate 204, thereby urging the roller 240 against the periphery of the positioning plate 204 and ultimately into the recess 228. A bracket 242 secured to the front of the machine holds a solenoid 244- in which is slidably disposed an armature 246 connected by a linkage 248 to the lever arm 232.

A bracket 250 attached to the first arm portion 214 of the lever 210 carries a screw 252 which is adapted to engage a plunger 254. The plunger 254 operates to close an electric switch 256 which actuates a solenoid (not shown). The solenoid in turn actuates fingers 261i, 262 (FIG. 1), the operation of which is fully described in the abovementioned patent.

A cam release and snap attach device 258 is provided to facilitate the mounting of the cams and the changing of cams in a quick and positive manner. Viewed from above (FIGS. 10 and 13) it affords a generally wedge shaped mounting 264 for the cams which are provided with generally triangular holes in their center region for slipping about the mounting. The mounting 264 is provided with a pair of horizontal slots 266 into which the inner edges of the cam plate 206 are urged by the pushmg downward by the operator of a lever 268. When the lever 268 is pushed downwards it abuts against an inner edge of the cam plate 206, forcing it to move laterally so that the two other inner edges of the cam plate enter the slots 266. Thus by manipulation of the lever 268 the cam plate 206 can be quickly loosened for easy removal or tightened in position for operation of the machine.

The cam illustrated in FIGS. 10 and 13 is positioned for a right insole. As will be later explained, the cam 206 may be inverted when a left sole is being operated upon. Alternatively, the cam driving motor may be reversed to drive the cam in a reverse direction to obtain the same result. If this mode of operation is prefenred, a reversing mechanism, shown in FIG. 13, is employed to shift the positioning plate 204 into proper position for a reverse cycle. The reversing means, designated generally as 300, includes a slot 302 in the base plate 201. The stud 230, instead of being stationary, is movable in the slot 302 and retains one end of a two-armed lever 304 as well as the lever arm 232. The two-armed lever 304 is pivotally mounted on a stud 306 which is mounted in a base plate 308 held by a bracket 310 which in essence is an extension of the bracket 242. Also mounted on the base plate 308 is a pair of

adjustable stops

312 and 314 and an electric switch 316. Mounted on the free arm of the twoarmed lever 304 is a switch actuator 318 adapted to engage the electric switch 316. Mounted on the other arm of the two-armed lever 304 is a switch 320 having a plunger 322 adapted to engage the stop 312.

In preparation for ribbing an insole, the operator inserts a cam 206 (FIGS. 10 and 12) into the cam means 290, the cam release and snap attach device 258 operating to hold the cam 206 securely in place. The cam selected is dependent upon the style of the insole being ribbed, that is, the curvature of the edge of the insole. The operator then cranks in the size of the insole by grasping the crank handle 16 and causing the hand crank 14 to rot-ate (FIGS. 1, 4 and 9). Assuming that the adjusting crank 15 is secured to the hand crank 14 by the clamp 19, rotation of the hand crank 14 causes the shaft 18 and the threaded cylinder 22 to rotate together.

The rotation of the threaded cylinder 22 causes the block 23 to move linearly, so that the wedge member 24 moves along the axis of the cylinder 22, its outer end riding in the slot 38 of the guide block 40 (FIG. 9). Movement of the wedge member 24, for example toward the hand crank 14, causes the wedge follower 32 to move in a direction away from the axis of the cylinder 22. As the wedge follower 32 moves away from the cylinder 22, the lever 34 is pivoted about the shaft 36 and the cam speed governing means 44 is moved by its attachment to the lever 34 at the shaft 42 (FIG. 2). Also turning with the shaft 36 is the pointer 98 which cooperates with the indicator 102 (FIG. 1) to apprise the operator of his having properly positioned the cam speed governing means 44 for the size of insole to be operated upon. Thus, it may be seen that by causing the pointer 98 to be alined with a size numeral on the indicator 102 the operator has positioned the ratio output disk 58 in the proper location on the face of the speed input disk 64. The spring 62 acting upon the bracket 59 urges the ratio output disk 58 into contact with the face of the strip speed input disk 64, the former disk being pivoted about the shaft 42 (FIG. 2).

Having inserted the proper cam for the style of insole and having made the size setting for the size of insole, the operator is ready to commence the strip attaching operation. A manual two-position switch (not shown) having a position for sewed seat work and a position for regular work, or butt-to-butt work, is thrown by the operator to one of the two positions, for example, to the sewed seat work position. This permits the switch 222 to be opened by the arm 226 and prevents the switch 256 from being closed by the screw 252, for purposes eX- plained hereinafter. By depressing a work support treadle (not shown) the work support 3 is moved into position for receiving an insole I (FIG. 10). In addition, the

work support treadle causes the solenoid 244 to be energized thus moving the armature 246 to the right as viewed in FIG. 10, which movement operates to pivot the lever arm 232 about the stud 230 thereby withdrawing the roller 240 from the recess 228 in the positioning plate 204 and freeing it for rotation. Depression of the treadle also sends electrical current to the motor 202 which does not at this time rotate. The heel gauge member 110 (FIG. 10) has been moved to its proper position for the size of insole to be operated upon by the turning of the shaft 106 and the action of the rotary-to-linear motion converter 108. Thus, turning of the hand crank 14 not only positions the cam speed governing means 44 but also the heel gauge member 110.

The insole I is inserted as shown in FIG. 10 with the heel gauge member 110 and the edge gauge 217 framing the proper position of the insole I. The operator then depresses a feed treadle to actuate the strip attaching and work feeding member (not shown) whereupon the heel gauge member 110 moves to an out of the way position as taught by the aforementioned patent. The operator guides the insole I by hand so that the edge of the insole abuts the edge gauge 217. The degree of depression of the feed treadle determines the speed with which the strip is attached and so is obviously variable at the operators discretion within an operating cycle of attaching a rib to a single insole.

As the strip is pulled into attaching position in accordance with the teachings of the prior art, it passes through the open-ended slot 82 (FIG. 11) in the strip guide block portion of the strip speed input means 76. As the strip emerges from the slot 82 it passes between the

wheels

92, 84 and is pressed firmly against the periphery of the wheel 84 by the action of the spring 94 upon the pressure wheel 92. Accordingly, movement of the strip causes rotation of the strip speed transmitting wheel 84 at a speed proportional to that of the strip.

Referring to FIG. 2, the rotational movement of the strip speed transmitting wheel 84 is transmitted through the torsion rod 74 to the shaft 66 of the strip speed input disk 64. However, the strip is fed in a step by step manner rather than in a continuous motion, so that the strip speed transmitting wheel transmits a series of movements as opposed to a smooth continuous movement. The flywheel 72 exerts an inertial effect upon the stepping movement of the torsional rod 74 so as to dampen out the erratic movements and provide for a smoother and more uniform rotational speed of the strip speed input disk. Accordingly, as the strip speed transmitting wheel 84 ro tates step by step, it effects continuous rotation of the strip speed input disk 64 at a speed proportional to that of the wheel 84.

Rotation of the strip speed input disk 64 causes rotation of the ratio output disk 58 at a speed proportional to the speed of the disk 64 and to the position of the disk 58 on the face of the disk 64. The movement of the ratio output disk 58 is transmitted by the disk shaft 48 to the circuit disk 50 which carries on its face the printed electrically conductive circuit 51 (FIG. 5) engaged intermittently by the upper two of the three electrical contacts 56 (FIGS. 5 and 8) which are connected electrically to the motor 202 of the cam means 200. By the use of known electrical principles, the speed with which the circuit disk 50 rotates and so the speed with which the upper two contacts 56 engage and disengage the rotating circuit 51, is made to determine the speed at which the motor 202 operates. Consequently, the speed at which the operator feeds the strip to the machine and the size of the insole being ribbed determine the speed of the motor 202 and thereby the rotational speed of the cam 206.

Referring to FIG. 15, it may be seen that by using a sequential switching system comprising the rotating circuit 51, and two brush contacts 56 (outermost) and 56 (middle), controlling relays R1 and R2 respectively, the relays are made to change the polarity on the motor 202 which is a stepping motor. The motor 202 rotates a known number of degrees with each change of the sequential contacts. A rotation of 1.8 with each change of polarity has been found to be satisfactory in the operation of the invention.

The motor 202 operates to rotate the positioning plate 204 and the cam 206. As the cam 206 rotates, the cam follower 216 is caused by the tension of the spring 220 to follow the periphery of the cam. The two-armed lever 210 is thereby caused to pivot about the stud 212 so that the edge gauge 217 is moved in accordance with the contour of the particular cam used and the speed of rotation of the cam.

The cam follower 216, in making its travel around the cam 206, reaches two points 205, 207 on the cam which are snfiiciently recessed to allow movement of the first arm portion 214 a distance adequate to disengage the screw 252 from the plunger 254 allowing movement of the plunger 254 a distance necessary to close the electrical switch 256. Upon the second closing of the switch 256 a solenoid (not shown) is activated which in turn activates the fingers 260, 262 (FIG. 1) preparatory to the cutting of the strip as is fully explained in the aforementioned patent. The position of the screw 252 is adjustable by rotation of the screw. However, as stated previously, when the machine has been set for sewed seat work by positioning of the two-position manual switch, the switch 256 is not permitted to close electrical ly so that the

fingers

260, 262 are not automatically activated when doing this type of operation. In sewed seat work the

fingers

260, 262 are manually caused to be operated.

Referring to FIG. 10, the related movements of the cam 206, cam follower 216, edge gauge 217 and insole I may be noted. FIG. shows the starting position, with the edge gauge 217 at the heel breast line a and the cam follower just counterclockwise of the point 205 on the cam. Keeping in mind that for a right shoe the cam rotates in a counterclockwise direction, it may be seen that the cam follower passes over the point 205 and rides up on a hump between the point 205 and a point 209. As the cam follower 216 rides up on this hump the two-armed lever 210 pivots about the stud 212 causing the edge gauge 217 to move toward the insole I. This movement of the edge gauge causes the insole to be guided under the strip attaching mechanism, which is stationary, so that the strip attaching operation takes place at a point closer to the edge of the insole. As the cam follower 216 rides over the hump 205-209, the strip is brought close to the edge of the insole along the ball portion bc. At the point 209 the cam follower moves toward the axis of the cam, causing the edge gauge to move in a direction away from the insole which allows the insole to be guided so that the strip attaching device operates at a point further in on the insole. As the cam follower rides between the points 209 and 203 on the cam, the toe section c-d of the insole is ribbed, with the ribbed strip being attached somewhat further in on the insole than it was between points bc, but not so far in as it was between points a-b toward point a. The cam follower next rides up on the hump 203-207 to facilitate the strip attaching operation between points d and e. As the cam follower passes point 207 it positions the edge 'gauge 217 for strip attachment between point e and 1.

When the cam 206 and the positioning plate 204 have completed substantially a full cycle the switch actuating arm 226 attached to the positioning plate 204 abuts the plunger 224 of the cutoff switch 222 causing the switch 222 to shut off the motor 202 and to shut off the power to the solenoid 244 whereupon the armature 245 and the lever 232 are moved by the spring 234 thereby causing the roller 240 to enter the recess 228 in the positioning plate 204, locking the positioning plate 204 in position for the start of a new cycle on another insole. Keeping in mind that the present example is for sewed seat work, the operator continues to attach the rib around the heel area from point 3 to point a in FIG. 10. However, inasmuch as the cam is nolonger rotating, the rib is attached at points equidistant from the edge around the heel area. When the rib is sewn completely around the insole the operator, by a manual switch (not shown) activates a tape cutter (not shown) which severs the tape. At the beginning of the next cycle the switch 222 is closed by the depression of the work support treadle so that the solenoid 244 is energized, the motor 202 receives current, and the cam 206 is again in a ready status, and will be caused to rotate by the feeding of rib tape to the insole.

The manual two-position switch referred to above may be set for regular work, or butt-to-butt rib attaching. This position permits the switch 256 to be closed by the screw 252 and prevents the switch 222 from being opened by the arm 226. In this type of operation, closing of the switch 256 causes activation of the fingers 260, 262 (FIG. 1). At the completion of a butt-tobutt ribbing operation the

fingers

260, 262 act to automatically energize a cutter which severs the tape, as is fully described in the aforementioned patent. In accordance with the present invention, the movement of the fingers is further caused to open the switch 222, thereby interrupting electrical power to the motor 202 and to the solenoid 244. Thus, for regular work the

fingers

260, 262 are relied upon to stop the cam movement, rather than the arm 226. In addition to stopping the motor 202 and deenergizing the solenoid 244, the movement of the

fingers

260, 262 opens the switch 256 so as to ready it for another cycle of operation. Depression of the work support treadle at the start of another cycle of operation again closes the switch 222.

FIG. 10 illustrates the position of a right shoe insole. In order to apply the strip to a like insole for a left shoe, it is only necessary to remove the cam 206, invert it, and replace it in its inverted position. The gauge is then ready for an operation on a left shoe insole. By inverting the cam used for right shoe operation, the points 207 and 205 are interchanged, as are the points 203 and 209. For right shoe operation the order of the cam points passing under the cam follower is 205, 209, 203 and 207. Keeping in mind that the direction of cam rotation remains the same for a left shoe, the order of the cam points passing under the cam follower is 207, 203, 209 and 205 or just the reverse as for right shoe operation.

In instituting the initial size settings on the size input means 12, and possibly for subsequent fine adjustments, it may be desirable to be able to move the wedge member 24 without moving the heel gauge member 110. To perform this function it is necessary to loosen the clamp 19 so as to disengage the hand crank 14 from the adjusting crank 15. The adjusting crank 15 may then be rotated while the hand crank 14 remains stationary (FIGS. 7 and 9). The rotation of the adjusting crank 15 causes rotation of the threaded cylinder 22 about the stationary shaft 18. The wedge member 24 is thereby caused to move without disturbing the position of the heel gauge member 110.

The operation of the optional reversing means of FIG. 13 involves electrically reversing the motor 202 so as to drive the cam in the reverse direction, and relocating the positioning plate 204, and therefore the cam 206, so that it will be in proper position for a reverse cycle. Both functions are accomplished by one movement of an operators hand.

FIG. 13 shows the cam 206 in proper position for a right shoe insole ribbing operation. In order to prepare the gauge control for left shoe insole operation it is only necessary to move the lever 304 to the right, as indicated, until it abuts the stop 314. By so doing the two-armed lever 304 is pivoted about the stud 306, causing the stud 230 to move in the slot 302 moving the lever arm 232 downwardly, as viewed in FIG. 13. By

reason of its connection through the link 248 to the armature 246 of the solenoid 244, the lever arm 232 has imparted to it during this movement a counterclockwise movement as viewed in FIG. 13. The lever arm 232 carries the lug 238 forward with it and so causes the roller 240 to move forward, and by its engagement with the recess 228 in the positioning plate forces the positioning plate 204 to rotate about its axis in a clockwise direction. The rotation of the positioning plate 204 causes the switch actuating arm 226 mounted on the positioning plate to actuate the plunger 224 of the cutoff switch 222. Since the motor 202 and the solenoid 244 are inactive at this time, actuating the cutoff switch 222 does not affect the circuit. The switch actuating arm 226 is carried to a point just behind the switch arm 224 whereupon the plunger 224 returns to its normal position and the positioning plate 204 is held fast by the new position of the roller 240.

Movement of the lever 304 also shifts the position of the switch 320 so that the plunger 322 is depressed by its contact with the stop 312, and the contact 318 engages the switch 316. By the use of known electrical principles, the actuation of the

switches

316 and 320 is made to electrically reverse the motor 202. Reversal of the direction of rotation of the cam 205 causes the points on the cam to pass under the cam follower 216 in the order: 207, 203, 209 and 205 or in the same order as when the cam is inverted. Thus, either inverting the cam or reversing direction of the motor 202 causes the proper sequence of cam points under the cam follower for left shoe operation. Simply reversing the direction of rotation of the cam does not, however, place the cam follower in the proper position for the starting of the operation, but by the above-explained shifting of the position of the cam simultaneously with the changing of the direction of rotation, all settings necessary for left shoe operation are accomplished in one movement.

Having thus disclosed my invention and described in detail a preferred embodiment thereof, I claim as new and desire to secure by Letters Patent of the United States:

1. In an insole strip attaching machine, means for varying the rate of attachment within an operating cycle, an adjustable edge gauge for variably controlling the position of the edge of an insole during a strip attaching operation, means for automatically varying the position of said gauge during the strip attaching operation, and means responsive to the rate of attachment of the strip to the insole for controlling the operation of said gauge position varying means.

2. In an insole strip attaching machine having means for varying the rate of attachment Within an operating cycle, means for attaching a strip in a step-by-step manner to an insole, an adjustable edge gauge for variably controlling the position of the edge of the insole during a strip attaching operation, means for automatically varying the position of said gauge during the strip attaching operation, means for converting the step-by-step motion of attachment of the strip to the insole to a continuous motion, and means responsive to said continuous motion for controlling the operation of said gauge position varying means.

3. Apparatus as in claim 1 including means for adjusting said gauge position varying means for operation upon a particular size of insole.

4. Apparatus as in claim 1 including a heel gauge means movable in response to operation of said adjusting means.

5. In an insole strip attaching machine, an adjustable edge gauge for variably controlling the position of the edge of an insole during a strip attaching operation, means for automatically varying the position of said gauge during the strip attaching operation comprising cam means having a cam for causing said gauge to change positions, means for driving said cam, and cam speed governing means for controlling the speed of rotation of said cam in accordance with the rate of attachment of said strip to said insole.

6. The invention according to claim 5 wherein said cam means includes a positioning plate for properly loeating said cam for the beginning of each cycle of operation.

7. The invention according to claim 6 including a reversing means for reversing the direction of rotation of said cam and for moving said positioning plate into the proper attitude for a reverse cycle.

8. In an insole strip attaching machine, an adjustable edge gauge for variably controlling the position of the edge of an insole during a strip attaching operation, means for automatically varying the position of said gauge during the strip attaching operation comprising cam means having a cam for causing said gauge to change position, means for driving said cam, cam speed governing means for controlling the speed of rotation of said cam, means for adjusting said c-am speed governing means for operation upon a particular size of insole, and means responsive to the rate of attachment of the strip to the insole for controlling the operation of the cam speed governing means.

9. In an insole strip attaching machine, an adjustable edge gauge for variably controlling the position of the edge of an insole during a strip attaching operation, means for automatically varying the position of said gauge during the strip attaching operation comprising cam means having a cam for causing said gauge to change position, means for driving said cam, a cam speed governing means for controlling the speed of rotation of said cam, mechanical means for adjusting said cam speed governing means for operation upon a particular size of insole, mechanical means responsive to the rate of attachment of the strip to the insole for controlling the operation of the cam speed governing means, said cam speed governing means having an electrical output proportionate to the size adjustment and the rate of strip attachment, said cam having a rotational speed responsive to said electrical output.

10. In an insole strip attaching machine, an adjustable edge gauge for variably controlling the position of the edge of an insole during a strip attaching operation, means for automatically varying the position of said gauge during the strip attaching operation comprising cam means having a cam for causing said gauge to change position, means for driving said cam, and a cam speed governing means for controlling the speed of rotation of said cam, mechanical means for adjusting said cam speed governing means for operation upon a particular size of insole, mechanical means responsive to the rate of attachment of the strip to the insole for controlling the operation of the cam speed governing means, said cam speed governing means having a circuit disk with a printed circuit thereon, said circuit disk being adapted to have a rotational speed determined by the size adjustment and the rate of strip attachment, said circuit disk cooperating with contacts thereby to effect an electrical output determined by the rotational speed of said disk, and said cam having a rotational speed responsive to said electrical output.

References Cited by the Examiner UNITED STATES PATENTS PATRICK D. LAWSON, Primary Examiner.