US2807036A

US2807036A - Wedge heel attaching and heel cover turning machines

Info

Publication number: US2807036A
Application number: US533740A
Authority: US
Inventors: Lawrence A Severy; Thomas W Snow
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1955-09-12
Filing date: 1955-09-12
Publication date: 1957-09-24
Anticipated expiration: 1974-09-24

Description

5 Shana-Shut 1 their Attorney fiw entors [aw/"en as A Java/y Thomas W-Snou/ in Sept. 24, 1957 L. A. SEVERY ETAL WEDGE HEEL ATTACH ING AND HEEL COVER TURNING MACHINES Fild Sept. 12. 1955 WEDGE HEEL ATTACHING AND HEEL COVER TURNING MACHINES 5 Sheets-Sheet. 2

Sept. 24, 1957 1.. A. SEVERY ETAL Filed Sept. 12. 1955 w 0 m )(TFKW. 0 em W0 W 5 a J m w 4 I J 5 g: ,w

Inventors Lawrence A. Seize/y Thomas W Snow By their Attorney Sept. 24, 1957 A. SEVERY ETAL 2,807,036

WEDGE HEEL ATTACHING AND HEEL COVER TURNING MACHINES Filed Sept. 12. 1955 5 Sheets-Sheet 3 ventom wrence A Sevely Thomas Wd'now Bi their Attorney p 2 1957 L. A. SEVERY ET 2,807,036

WEDGE HEEL ATTACHING AND HEEL COVER TURNING MACHINES Filed Sept. 12. 1955 s snail-shut 4 g; 6 e W 3 1 a i j nventors Lawrence Aseue ry Thomas W-Snow By their Attqrney p 2 1957 L. A. SEVERY arm. 2,807,036

WEDGE HEEL ATTACHING AND HEEL COVER TURNING IIACHINES 5 Shuts-Sheet. 6

Filed Sept. 12. 1955 Inventors Lawrence A Sex/e Thomas WSno By their Attorney 2,807,036 Patented Sept. 24, 1957 WEDGE HEEL ATTACHING AND HEEL COVER TURNING MACHINES Lawrence A. Severy, Rockport, and Thomas W. Snow, Melrose, Mass., assignors to United Shoe Machinery Corporation, Boston, Mass, a corporation of New Jersey Application September 12, 1955, Serial No. 533,740

12 Claims. (Cl. 12-1) This invention relates to machines for operating upon shoes, and it is herein disclosed as embodied in a machine for adhesively attaching wedge heels to the bottoms of shoes of the slip lasted type and also for turning the heel covers of such shoes. The usual practice has been to perform these operations separately, either by hand or by the use of separate machines.

An object of the present invention is to provide a machine for performing both the operations above mentioned.

To attach the heel to the shoe bottom while the heel cover is still unturned enables the operator to position the heel accurately in relation to the shoe; but the presence of the attached heel increases the difficulty of turning the heel cover. This difficulty can be overcome by using a cover turning machine of the type disclosed in United States Letters Patent No. 2,738,526, granted March 20, 1956, in the name of Benjamin F. Parrelli and also in United States Letters Patent No. 2,690,573, granted October 5, 1954, on the application of Vincent P. Romeo, both of which contain claims directed to certain features of the invention herein disclosed. These features consist in arrangements of machine structure whereby the shoe is adequately supported against the stress of the cover turning instrumentalities while, at the same time, the major portion of the shoe can be flexed to relax the lasting margin of the heel cover and thereby facilitate the turning of the cover over the attached heel.

The Romeo machine, however, is not adapted for use in attaching heels, and the Parrelli machine, while capable of such use, lacks any device for insuring a rapid and accurately gaged attachment of the heel to the shoe, without which device the operator would have to gage the heel by eye.

In accordance with a feature of the present invention, the illustrated machine is provided with a gaging device engageable with a shoe and with a heel to be attached to the shoe, and it is provided also with means for effecting clamping pressure between the heel and the bottom of the shoe while the heel and the shoe are in contact with the gaging device to enable the heel and the shoe to be secured together in gaged positions. Such clamping pressure, in the illustrated machine, is conveniently utilized to cause adhesion between precemented surfaces of the heel and the shoe. In this connection it should be noted that Letters Patent of the United States No. 2,608,701, granted September 2, 1952, upon the application of Edward Quinn, discloses and claims a machine whereby a platform unit is supported in gaged relation to a shoe just prior to the application of clamping pressure for adhesively attaching the platform unit to the shoe, and whereby the platform cover is turned while the shoe and the platform unit are supported by such clamping pressure. The machine disclosed herein likewise has means for turning the heel cover while the shoe and the heel are supported by clamping pressure. The cover turning means of the illustrated machine comprises a treadle operated self-locking gripper.

The clamping pressure of the illustrated machine is obtained by the use of a pair of clamping members engageable respectively with the interior surface of the shoe bottom and the tread surface of the heel. The gaging device is engageable with the heel end portions of the shoe and the heel to be attached to the shoe, and it is urged toewardly to a stopped position by relatively strong hydraulic pressure. The shoe is yieldably urged heelwardly and held against the gaging device by a relatively weak spring acting upon the interior clamping member to cause the latter to exert a heelward thrust against an upstanding portion of the shoe, which upstanding portion, in a backless shoe of the type illustrated herein, is the unturned heel cover. A hook engageable over the thin forward edge of the wedge heel is urged by a relatively weak spring to exert a heelward thrust upon the heel to hold the heel against the gaging device, the heel being thus gaged lengthwise of the heel end of the shoe While supported by the gage and the hook just prior to the application of the clamping pressure which causes the adhesion of precemented surfaces of the heel and the shoe. The gaging device herein illustrated serves also to gage the heel and the shoe laterally with respect to each other.

These and other features of the invention, including details of construction, will now be more particularly described with reference to the accompanying drawings, in which Fig. l is a side elevation of an illustrative machine embodying the invention;

Fig. 2 is a plan view partly in section, of the machine shown in Fig. 1;

Fig. 3 is a side elevation of the upper portion of the machine illustrating the operation of the heel gaging device upon an unattached heel and the heel end of a shoe;

Fig. 4 is a view similar to Fig. 3 showing the lower clamp raised into operating position and the heel gaging device retracted to an out-of-the-way position;

Fig. 5 is an exploded angular view of a hydraulic valve control mechanism;

Fig. 6 is a section in elevation taken on the line VI-Vl of Fig. 2;

Fig. 7 is a section in elevation taken on the line VII- VII of Fig. 2; and

Fig. 8 is a side elevation of a shoe before attachment of the heel and turning down of the heel cover.

The present invention is disclosed herein with reference to an illustrative shoe (Fig. 8) comprising an upper U, a heel cover C, a forepart platform cover C', a sock lining S, and a heel tuck T. The platform cover and the heel cover are joined to the upper and the sock lining by stitching S. As shown in Fig. 8 the heel and forepart platform covers have not yet been turned. The purpose of the illustrated machine is to attach a wedge heel H (Figs. 3 and 4) to the shoe and then to turn the heel cover. The heel H is shown as having formed in its shank end portion a transverse notch N for receiving a forepart platform (not shown) of cork composition or other suitable material. This forepart platform will be attached, and the forepart cover C will be turned, by subsequent operations unrelated to the present invention.

The work engaging members of the illustrated machine comprise an upper clamp 20, a lower clamp 22 cooperating therewith, a pair of

like gages

24 and 26 engageable simultaneously with both the shoe and the heel H in the vicinity of the heel ends thereof and disposed symmetrically on opposite sides of the longitudinal center line of the heel end of the shoe when the shoe is placed upright on the upper clamp 20, a hook 28 engageable with the shank end (i. e., forward end) of the heel H to hold said shank end down, and a self-locking gripper 30 for gripping the margin of the heel cover C and operable to turn the heel cover.

The supporting structure of the machine comprises a column 32 upon which is rigidly secured a shelf 34 and a head 36.

The upper clamp 20 is a bar inclined down and heelwardly from a supporting arm 38 to which it is rigidly attached; it is more or less complemental, in the convexity of its upper surface 37, to the interior of the unturned heel cover C and is formed at its lower end, which is covered with a pad 39, to engage a restricted area of the interior surface of the sock lining S adjacent to the heel end of the shoe. The arm 38 extends up from the clamp 20 and has two rearwardly extending cars 40 by which it is pivotally mounted on a pin 42 for forward and rearward swinging movement of the lower end of the upper clamp 20. The pin 42 is mounted in a bracket 44 secured on the head 36. A tension spring 46 yieldably urges the arm 38 rearwardly against a stop screw 48 threaded for adjustment in the bracket 44.

The heel gages 24 and 26 and their operating mechanisms are similar and symmetrically arranged on opposite sides of the longitudinal center line of the shoe. These gages, as shown in Figs. 2 and 3, have concave cylindrical work engaging faces 50, and each is mounted for rotary adjustment upon a pin 52 secured in the forward end of a forwardly and downwardly extending piston rod 54. A piston 56 (Fig. 3) on each rod 54 is driven forward and backward in a cylinder 58 under control of a valve mechanism later to be described. Fluid pressure is admitted to and exhausted from the respective ends of each cylinder through

openings

60 and 62. Each cylinder 58 is secured to the head 36 by a bracket 64. Secured upon each cylinder 58 is a stationary guide rod 66 extending parallel to the axis of its associated piston rod 54, and secured upon each piston rod 54 is a block 68 having upstanding ears which slidingly embrace its associated guide rod to prevent turning of the piston rods. Each piston rod 54 extends rearwardly as well as forwardly from its associated cylinder 58 and has threaded upon its rearward end portion a knurled stop nut 70 which, by engagement with the rear cylinder head, adjustably limits the advance of the associated

heel gage

24 or 26 under fluid pressure and thus determines the operating position of the heel gage.

The hook 28 extends integrally from a block 72 which slides heightwise for adjustment upon an arm 74 inclined upwardly and forwardly and pivotally mounted upon a pin 76 secured in a bracket 78 fixed upon the 'frame of the machine. Adjustment of the hook 28 up or down on the arm 74 is maintained by a pawl 80 pivotally mounted on the block 72 and engageable with ratchet teeth formed on the arm 74. A compression spring 82 interposed between a bracket 84 on the block 72 and a lug extending from the pawl '80 holds the pawl engaged with the ratchet in any desired position of adjustment. The ratchet teeth hold the pawl 80 positively against upward movement and thus enable the hook 28 to hold the heel H against tilting counterclockwise under the influence of forces to be exerted upon it by the clamping members and the heel cover turning mechanism. The hook 28 is normally urged counterclockwise about the pivot pin 76 to a stopped position by a tension spring 86 having its lower end anchored to the bracket 78 and its upper end secured to a bell crank extension of the arm 74. In using the hook 28 the operator, after the

gages

24 and 26 have been brought into operating position, swings the arm 74 clockwise and engages the hook over the thin forward edge of the wood heel H, whereupon the book not only holds the forward edge down but also, by engagement with the wall of the notch N, holds the heel end of the heel against the

gages

24 and 26. The spring 86 is weaker than the hydraulic pressure which holds the

gages

24 and 26 in their operating positions and it does not, therefore, disturb the setting of the gages.

The lower heel clamp 22 is raised into operating position by a hydraulic mechanism after the shoe and the heel have been gaged by the

gages

24 and 26. To this end the lower heel clamp 22 is mounted on the upper end of a plunger 88 guided for heightwise (i. e., longitudinal) movement in a sleeve 90 which is guide for heightwise (i. e., longitudinal) movement in a bearing formed in the bracket 78. The plunger 88 has a rounded lower end which bears against the midportion of a pawl 92 pivotally mounted at one end upon a pin 94 secured in a block 96 fixed upon the sleeve 90. The opposite end of the pawl 92 is yieldably supported by a plunger 98 slidab'le heightwise in a bore in the block 96 and having its lower end engaged by a compression spring 100 housed in said bore. The sleeve 90 has a downward extension 102 the lower end of which is pivotally connected by a pin 103 (Fig. l) to a piston rod 104 operated by hydraulic pressure exerted against a piston, not shown, in a cylinder 106 pivotally mounted at its lower end upon a pin 107 secured in the column 32. When fiuid under pressure is admitted to the lower end of the cylinder 106, the lower clamp 22 will be forced up into clamping engagement with the under surface of the heel H, whereupon the upward movement of the lower clamp will be arrested. As the upward movement of the sleeve 90 continues, the pawl 92 will rock clockwise about the pin 94 against the pressure of the spring 100 until the operative end of the pawl engages one of a plurality of ratchet teeth 108 formed on a plate 110 secured upon the bracket 78. Further upward movement of the sleeve 90 will be checked by cramping action, the pawl 92 causing the sleeve to jam in its bearing in the bracket 78. If the operators finger should happen accidentally to be interposed between the lower clamp 22 and the tread surface of the heel, the upward movement of the lower clamp would at once be arrested and no damage would result.

The self-locking gripper 30 (Fig. 4) includes a cooperating jaw 112 pivotally mounted by a pin 114 on a "stationary" jaw 115 and having a finger piece 116 to facilitate release of the gripped work piece. The gripper 30 is pivotally mounted upon a pin 118 carried in the upper end portion ofa treadle rod 120. A stop on the upper end of the treadle rod 120 limits pivotal movement of the gripper 30 clockwise about the pin 118. The lower end of the treadle rod 120 is pivotally connected to a treadle 122, and a tension spring 124 urges the treadle 122 to an upper stopped position. An edge of the treadle rod 120 is engaged by a roll 126 (Fig. l) rotatably mounted on one end of an arm 128. the other end of which is pivotally mounted by a pin 130 on a stationary bracket secured on the column 32. A tension spring 132 acting on the arm 128 holdsthe treadle rod rearwardly in an out-of-the-way position as shown in Pig. 3 when the gripper 30 is not engaging the work. Rigidly secured on the machine frame is a stationary earn 134 (Fig. 3) having an operative edge which slopes down and rearwardly at an angle substantially like that of the upper clamp 20. A cam roll 136 engageable with the cam 134 and rotatably mounted on the treadle rod 120 cams the gripper 30 rcarwardly and thus prevents binding of the heel cover C against the upper clamp 20 as the treadle 122 is depressed to turn the cover.

The hydraulic system for operating the heel gages 24 and 26 and the lower clamp 22 comprises a valve casing 138 (Figs. 2 and 5) having four valve chambers in which are slidably housed valves (not shown) carried by four parallel valve stems 140, 142, 144, and 146 (Fig. 5). These valve stems are operated respectively by four

links

148, 150, 152, and 154 having ball joints at their ends. The links 148 and 1S2operate the valve stems 1.40 and 144 and are moved simultaneously in opposite directions by a gimbal ring 156 trunnioned in a bracket 158 secured upon the shelf 34. Rotatably mounted in the gimbal ring 156 is an upright post 160 from which extend radially a pair of diametrically opposite arms 162 (Fig. .2) and 164 (see also Fig. 5). Turning of the post 160 in the gimbal ring 156 will move the

links

150 and 154 simultaneously in opposite directions to operate the valve stems 142 and 146. A long arm 166 which, at one end, is rigid with the post 160 serves to turn the post about its hearings in the gimbal ring 156 to operate the

links

150 and 154. The other end of the arm 166 is rounded, and it enters a slot 168 (Fig. 6) formed in a block 170 (see also Fig. 2) which is rigidly secured against the outer face of a retaining collar 172 fixed upon a shaft 174 (Figs. 1, 6, and 7) rotatable in a bearing 175 fixed on the shelf 34. The slot 168 extends radially with respect to the axis of the shaft 174, and the end portion of the arm 166 is yieldingly held radially outward against a closed end of the slot by a plunger 176 which is housed in the block 170 and is urged outwardly by a compression spring 17 8. The shaft 174 is turned 90 at a time by a ratchet wheel 180 (Fig. 6) fixed on the shaft by a pin 181 and having four

notches

182, 184, 186, and 188 which are successively engaged by a pawl 190. Rotatably mounted on the ratchet wheel 180 is a ring 192 which carries a pin 194 on which the pawl 190 is pivotally mounted and also on which is mounted a leaf spring 196 urging the pawl 190 into engagement with one or another of the said notches. The ring 192 has a peripheral slot 198 to accommodate the spring 196 and the pawl 190, and it has also a pcripheral slot 200 to accommodate the upper end of a treadle rod 202 which is pivotally connected to the ring by a pin 204. The lower end of the treadle rod 202 is pivotally connected to a treadle 206 fulcrnmed on the column 32 and normally held up by a tension spring 208. Each depression of the treadle 206 advances the ring 192 and, through the pawl 190, the ratchet wheel 180 through ninety degrees clockwise. Release of the treadle enables the spring 208 to retract the ratchet wheel through ninety degrees into engagement with the next notch. A ball detent 210 (Fig. 7) pressed down by a spring 212 which is housed in a hollow screw 214 serves to hold the shaft 174 yieldingly in any one of four positions corresponding to the four at-rest positions into which the ratchet wheel 180 is moved by the pawl 190. The screw 214 is threaded down through the bearing 175, and the ball 210 engages one or another of four notches formed in the shaft. The ring 192 and the ratchet wheel 180 are interposed between the retaining collar 172 and the right hand face of the bearing 175. A retaining collar 216, fixed on the shaft 174, engages the left hand face of the bearing 175.

Fluid such as oil under pressure is conducted from any suitable source to the valve casing 138 through a conduit 218 (Fig. 1); and exhaust fluid is conducted from an outlet 220 through a conduit 222 to a sump (not shown). The outlet 220 from the valve casing 138 is shown in Figs. 1 and the inlet (not shown) is below the valve casing and opposite to the outlet.

In the initial position of the machine, the heel gages 24 and 26 are retracted, and the lower clamp 22 is down. The axis of the arm 166 which, in the entire cycle of operation, describes a cone, now passes through a point A (Fig. 5), and the valve stems 144 and 146 occupy their right hand positions, and the valve stems 140 and 142 their left hand positions. In such positions of the four valve stems, the pressure of the hydraulic fiuid will be transmitted from the inlet of the valve casing 138 through a conduit 224 to the upper end of the cylinder 106 and through a conduit 226 to the forward ends of the cylinders 58, which forward ends are connected by a conduit 228; and at the same time the lower end of the cylinder 106 communicates through a conduit 230, and the rear ends of the cylinders. connected by a conduit 232, communicates through a conduit 234, with the outlet 220. The heel gages 24 and 26 therefore occupy their retracted or out-ofthe-way positions, and the lower clamp 22 occupies its lower or out-of-the-way position.

If now the operator depresses the treadle 206 to turn the shaft 174 clockwise ninety degrees, the axis of the arm 166 will advance from the position A (Fig. 5) to a position B. Such advance will not change the angular position of the gimbal ring about the axis of its trunnions, and the valve stems and 144 will still occupy their initial positions, with the stern 140 to the left and the stem 144 to the right, thus holding the lower clamp 22 down. The advance above referred to, however, will rock the post about its hearings in the gimbal ring 156, moving the stem 142 to the right and the stem 146 to the left, and thereby connecting the forward ends of the cylinders 58 to the outlet 220 and the rear ends to the pressure inlet opening of the valve casing 138. The heel gages 24 and 26 will thus be advanced to their operative positions.

A second depression of the treadle 206 will move the axis of the arm 166 from the position B to a position C, thus tilting the gimbal ring 156 without rocking the post 160. The valve stem 140 is thus moved to the right and the valve stem 144 to the left, admitting pressure to the lower end of the cylinder 106 and exhausting it from the upper end to raise the lower clamp 22 into operative position; while the valve stems 142 and 146 remain as they were to maintain the heel gages 24 and 26 in their operative positions.

A third depression of the treadle 206 will move the axis of the arm 166 from the position C to a position D, thus rocking the post 160 without tilting the gimbal ring 156. The valve stem 142 will thus be moved to the left and the valve stem 146 to the right, causing retraction of the heel gages 24 and 26 to their out-of-the-way positions; while the valve stems 140 and 144 will remain as they were, retaining the lower clamp 22 in its clamping position.

A fourth depression of the treadle 206 will bring the axis of the arm 166 from the position D to the initial position A, tilting the gimbal ring 156 without rocking the post 160. The valve stem 140 will thus be moved to the left and the valve stem 144 to the right, causing the lower clamp 22 to be moved into its lower position and releasing the shoe; the heel gages 24 and 26 meanwhile remain in their retracted positions. Thus, after the fourth depression of the treadle 206, the lower clamp 22 and the heel gages 24 and 26 will occupy their initial positions.

The operation of the machine will now briefly be reviewed. The operator holds the empty shoe, right side up and toe end toward him, in one hand, for example his right hand, with the unturned heel cover C over the upper clamp 20. In his left hand he holds the wedge heel H. He now depresses the treadle 206 to bring the heel gages 24 and 26 forward into operating positions. As the heel gages approach the limit of their forward movement, the spring 46 will yield; this spring is strong enough, however, to cause the outwardly extending stitched margins of the sock lining S and the heel cover C to bend down against the heel gages and becomes flush with the heel tuck T. While the shoe is thus gaged, the operator holds the wedge heel H underneath the heel tuck T with the heel end of the heel against the

gages

24 and 26, and he snaps the book 28 over the thin forward edge of the wedge heel. The spring 86 causes the free end of the hook to press rearwardly against the wall of the notch N and thus urge the heel end of the heel into gaging relation with the heel gages 24 and 26. Heels without notches are urged into gaging position by the pressure of the shank of the hook 28 against the forward edges of the heels. It is evident that the heel gages operate to gage the shoe and the heel laterally as well as longitudinally with respect to each other. With the shoe and the heel thus gaged, the operator depresses the treadle 206 a second time, causing the lower clamp 22 to rise and clamp the heel to the shoe bottom, upward movement of the shoe and the heel being opposed by the upper clamp 20. The shoe bottom has been coated with cement, and the upper face of the heel has been coated with cement over a restricted area at its heel end, and

the clamps and 22 are constructed and arranged to apply clamping pressure only over such restricted area, causing restricted areas of the heel and the shoe bottom to adhere while leaving the remainder of the shoe bottom free to flex. Any tendency of unbalanced clamping pressures to tilt the forward edge of the heel up is opposed by the hook 28. While the shoe and the attached heel are thus held clamped the operator depresses the treadle 206 a third time, causing the heel gages 24 and 26 to be retracted to their out-of-the-way positions. He then bends over the upper margin of the heel cover C and introduces it between the jaws of the gripper 30 and de presses the treadle 122 to turn the heel cover down. While thus depressing the treadle 122, the operator facilitates the turning of the heel cover by flexing the major portion of the shoe bottom to relax the lasting margin of the heel cover C. With a hand on each side of the shoe, he grasps the shoe and inserts his fingers between the wedge heel and the shoe bottom to flex the shoe bottom into a hump, as explained in the Parrelli Patent above referred to. He can, if desirable, assist the turning of the heel cover with his thumbs. The upper clamp 20 supports the heel cover from crumpling or collapsing inwardly during the early portion of the turning operation, and the cam I34 insures that the gripper 30 will follow the inclination of the heel cover without binding as the gripper descends. When the operations of attaching the wedge heel and turning the heel cover have been completed. the operator releases the shoe by opening the gripper 30 and depressing the treadle 206 for the fourth time to lower the clamp 22 to initial position.

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

1. In a machine for use in the manufacture of shoes. 21 gage engageable with a shoe and also with a heel to be attached to the shoe, means movable lengthwise of the shoe for creating pressure directed lengthwise of the shoe between the shoe and the gage, and means for creating directed lengthwise of the heel between the heel and the gage, thereby positioning the heel and the shoe in gaged relation to each other and enabling the heel to be attached to the shoe in such gaged relation.

2. In a machine for use in the manufacture of shoes, a clamping member engageable with the interior surface of a shoe bottom and adapted also to contact the interior surface of an upstanding portion of the shoe at the heel end of the shoe. gage means, relatively strong yieldable means for moving the gage means toewardly from an out-of-the-way position into an operative position, stop means for limiting the toeward movement of the gage means and thereby determining the operative position of the gage means, relatively weak means acting on the clamping member to hold the shoe yieldingly against the gage means as the gage means moves into operative position. said relatively weak means thus cooperating with the gage means to determine the longitudinal position of the shoe, the gage means in its operating position being engageable also with a heel presented to it to gage the heel longitudinally of the heel end of the shoe, a clamping member engageable with the tread surface of the heel, and means for causing the clamping members to exert clamping pressure between the heel and the shoe bottom to cause adherence of adjoining precemented surfaces of the heel and the shoe bottom while the heel and the shoe bottom are thus gaged.

3. In a machine for use in the manufacture of shoes, clamping member engageable with the interior surface of a shoe bottom and adapted also to contact the interior surface of an upstanding portion of the shoe at the heel end of the shoe, gage means, relatively strong yieldable means for moving the gage means toewardly from an out-of-the-way position into an operative position, stop means for limiting the toeward movement of the gage means and thereby determining the operative position of the gage means, means operating on the clamping member to hold the shoe with relatively weak pressure yieldingly against the gage means as the gage means moves into operative position, said relatively weak pressure means thus cooperating with the gage means to determine the longitudinal position of the heel end of the shoe, means engageable with a heel to be attached to the shoe for exerting a relatively weak heelwardly directed thrust to urge the heel yieldingly against the gage means and thereby support the heel and gage it relatively to the shoe, a clamping member engageable with the tread surface of the heel, and means for causing the clamping members to exert clamping pressure between the heel and the shoe bottom to cause adherence of adjoining precemented surfaces of the heel and the shoe bottom while the heel and the shoe bottom are thus gaged.

4. In a machine for use in the manufacture of shoes, gage means initially occupying an out-of-the-way position, a pair of clamp members one of which is engageable with the interior surface of a shoe bottom and the other of which is engageable with a heel to be attached to the shoe, said other clamp member initially occupying an outof-theway position, a treadle, and operating means actuated by the treadle on the first depression thereof to move the gage means into an operative position wherein it is engageable with both the shoe and the heel, and on a second depression of the treadle to move said other clamp member into an operative position wherein it cooperates with said one clamp member to clamp together the heel and the shoe in positions determined by said gage means, and on a third depression of the treadle to return the gage means to initial position, and on a fourth depression of the treadle to return said other clamp member to initial position.

5. In a machine for use in the manufacture of shoes, a clamp engageable with the interior of a shoe bottom, a clamp engageable with the tread surface of a heel to be adhesively attached to the shoe, a plunger on one end of which is fixed one of said clamps, a sleeve in which the plunger is guided for longitudinal movement, a pawl, a pivotal connection between the pawl and the sleeve, resilient means carried by the sleeve for urging the pawl to swing about said pivotal connection in a direction to bear against the opposite end of said plunger, means for imparting to the sleeve a thrust which will be transmitted through the pivotal connection and through the resilient means into the plunger to urge the clamp fixed on the plunger toward the other clamp, and a stationary ratchet engage-able by the pawl to stop movement of the plunger and the clamp carried thereon when said clamp encounters resistance to movement toward the other clamp.

6. In a machine for use in the manufacture of shoes, at gage member engageable with the heel end of a shoe and of an unattached heel for determining the location of the heel lengthwise of the shoe, means engageable with the interior surface of the shoe bottom for holding the shoe against said gage member, means engageable with the forward portion of the heel for holding the heel against said gage member, and means operative only after the shoe and heel have been thus positioned for applying clamping pressure between the heel and the shoe bottom.

7. In a machine for use in the manufacture of shoes, a gage engageable with a shoe and also with a heel to be attached to the shoe, a clamping member engageable with the interior surface of a shoe bottom at the heel end thereof and cooperable with said gage for positioning said shoe lengthwise, means engageable with the forward end of the heel for holding the heel against said gage thereby causing the heel to be positioned in gaged relation to the shoe, a clamping member engageable with the tread surface of the heel, and means for causing the clamping members to exert clamping pressure between the heel and the shoe bottom to cause adherence of adjoining precemented surfaces of the heel and the shoe bottom While the heel and shoe bottom are in gaged relation.

8. In a machine for use in the manufactureof shoes, a clamping member engageabie with the interior surface of a shoe bottom and adapted also to contact the interior surface of an upstanding portion of the shoe at the heel end of the shoe, gage means normally in an out-of-the-way position and movable into cooperating relation to said clamping member for locating said shoe, said gage means when in said relation also being engageable with a heel to be attached to said shoe to gage the heel with respect to the heel end of the shoe, a member engageable with the forward end of said heel and cooperating with said gage for holding said heel in gaged relation to said shoe, a clamping member engageable with the tread surface of said heel, and means for causing the clamping members to exert clamping pressure between the heel and the shoe bottom to cause adherence of adjoining precemented surfaces of the heel and the shoe bottom while the heel and shoe bottom are in gaged relation.

9. In a machine for use in the manufacture of shoes, a clamping member engageable with the interior surface of a shoe bottom and adapted also to contact the interior surface of an upstanding portion of the shoe at the heel end of the shoe, gage means normally in an out-of-the-way position and movable into cooperative relation to said clamping member for locating said shoe, said gage means when in said relation also being engageable with a heel to be attached to said shoe to gage the heel with respect to the heel end of the shoe, a member engageable with the forward end of said heel, means for causing said member to exert a heelward thrust on said heel for holding said heel in gaged relation against said gage means, a clamping member engageable with the tread surface of said heel, and means for causing the clamping members to exert clamping pressure between the heel and the shoe bottom to cause adherence of adjoining precemented surfaces of the heel and the shoe bottom while the heel and the shoe bottom are in gaged relation.

10. In a machine for use in the manufacture of shoes, a gage member engageable with the heel end of a shoe and of an unattached heel for determining the location of the heel lengthwise of the shoe, means engageable with the interiors surface of the shoe bottom for holding the shoe against said gage member, means engageable with the forward portion of the heel for holding the heel against said gage member, means operative only after the shoe and heel have been thus positioned for applying clamping pressure between the heel and the shoe bottom, and grippers engageable with the margin of an unturned heel cover of the shoe and operable to turn the heel cover while the heel and the shoe are maintained in gaged relation by the clamping members.

11. In a machine for use in the manufacture of shoes, a clamping member engageable with the interior surface of a shoe bottom and adapted also to contact the interior surface of an upstanding portion of the shoe at the heel end of the shoe, gage means normally in an out-of-theway position and movable into cooperative relation to said clamping member for locating said shoe, said gage means when in said relation also being engageable with a heel to be attached to said shoe to gage the heel with respect to the heel end of the shoe, a member engageable with the forward end of said heel and cooperating with said gage for holding said heel in gaged relation to said shoe, a clamping member engageable with the tread surface of said. heel, means for causing the clamping members to exert clamping pressure between the heel and the shoe bottom to cause adherence of adjoining precemented surfaces of the heel and the shoe bottom while the heel and the shoe bottom are in gaged relation, and grippers engageable with the margin of an unturned heel cover of the shoe and operable to turn the heel cover while the heel and the shoe bottom are maintained in gaged relation by the clamping members.

12. in a machine for use in the manufacture of shoes, a clamping member engageable with the interior surface of a shoe bottom and adapted also to contact the interior surface of an upstanding portion of the shoe at the heel end of the shoe, gage means normally in an out-of-theway position and movable into cooperative relation to said clamping member for locating said shoe, said gage means when in said relation also being engageable with a heel to be attached to said shoe to gage the heel with respect to the heel end of the shoe, a member engageable with the forward end of said heel, means for causing said member to exert a heelward thrust on said heel for bolding said heel in gaged relation against said gage means, a clamping member engageable with the tread surface of said heel, means for causing the clamping members to exert clamping pressure between the heel and the shoe bottom to cause adherence of adjoining precemented surfaces of the heel and the shoe bottom while the heel and the shoe bottom are in gaged relation, and grippers engageable with the margin of an unturned heel cover of the shoe and operable to turn the heel cover while the heel and the shoe bottom are maintained in gaged relation by the clamping members.

References Cited in the file of this patent UNITED STATES PATENTS 1,645,809 Gubitosi Oct. 18, 1927 1,926,147 Gouldbourn et al Sept. 12, 1933 2,034,734 Woodcock et al Mar. 24, 1936 2,059,331 Freeman Nov. 3, 1936 2,151,038 Lancaster Mar. 21, 1939 2,394,997 Kamborian Feb. 19, 1946 2,690,573 Romeo Oct. 5, 1954 2,704,849 St. Germain Mar. 29, 1955