US1488094A - Shoe-supporting jack - Google Patents

Description

March 25 1924. 1,488,094

J. CAVANAGH ET AL SHOE SUPPORTING JACK Filed Feb. 5, 1920 2 Sheets-Sheet- 1 J7 zwemfimw:

r wimfiz/iw March 25 1924. I 8,994

J. CAVANAGH ET AL SHOE SUPPORTING JACK Filed Feb. 5, 1920 2 Sheets-Sheet 2 lnvenfiona':

Z57 T J 76 Patented Mar. 25, 1924.

JAMES CAVANAGH, OF DORCHES'I'ER, AND LAURENCE E. TDPHAM, 0F SWAMPSCOTT, MASSACHUSETTS, ASSIGNORS TO UNITED SHOE MACHINERY CORPQRATION, OF

PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY SHOE-SUPPORTING JACK.

Application filed February 5, 1920. Serial No. 356,565.

To all @071 am it may concern:

.Be it known that we, JAMES CAVANAGH and LAURENCE E. TOPHAM, citizens of the United States, residing, respectively, at Dorchester, in the county of Suffolk, and Swampscott, in the county of Essex, State of Massachusetts, have invented certain new and useful Improvement in Shoe-Supporting Jacks; and we do hereby declare the following to be a full, clear, and exact desoription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to shoe supporting jacks, and more particularly, to'jacks of the class which are adapted to be employed to support the shoe in machines for inserting a continuous line of fastenings through an upper and an insole or a turn shoe sole to attach the same securely and permanently together.

The primary object of the invention is to provide an attachment for jacks of the above class which will enable certain parts of the upper to be securedproperly to the sole without lasting these parts and seeurin the same in position by temporary 'fastenlngs.

I'Vith the above object in view the present invention couiprises one or more devices for engaging the upper and causing the same to conform to the last operating to hold the upper in position during the attaching operation. In the preferred form of the invention. the upper engaging devices are mounted for movement toward and from the lasted shoe to carry the same into and out of operative position. This enables these devices to be located so that they will not obstruct the placing of a shoe on the jack or the removal of a shoe therefrom. In the particular form of the invention illustrated in the present application, these devices consist of pivoted arms arranged to engagethe upper along the shank at the opposite sides of the shoe and wipethe upper over the last 7 so as to enable the upper along these parts of the shoe to be secured to the insole Without the usual side lasting operation.

As illustrated in the present application, the invention is applied to a jack of the type the parts of which are arranged so that upon placing the shoe on the jack the shoe is automatically adjusted in a predetermined position with relation to the jack and clamped in adjusted position, and that up'on the turning of the jack back to starting position after the completion of the attaching operation the parts of the jack are actuated to unclamp the shoe and restore the jack to its initial condition. In this construction the upper engaging devices are swung inwardly toward the shoe as the shoe is adjusted and clamped on the jack, and are swung outwardly away from the shoe as the parts of the jack'are restored to their initial condition.

The 'various features of the invention will be readily understood from the accompanying drawings illustrating the invention 1n its preferred form and the following detailed description of the constructions therein shown.

In the drawings Figure 1 is a view partly in front elevation and partly in section of the jack; Fi 2 is a view similar to Fig. 1 illustrating t 1e parts in different positions; and Fig. 3 is a detail view illustrating particularly the upper engaging devices.

With the exception of the upper engaging devices and the mechanism for actuating and controlling the same, the parts of the jack illustrated in the drawing have the same construction, arrangement and mode of operation as the corresponding parts of the jack illustrated and described in the pendingapplication of Laurence E. Topham. Serial No. 269,076, filed December 31, 1918. To enable the invention to be better understood, however, the jack will be rather briefly described in the present application.

The jack comprises a heel support 2 and a toe rest 4 mounted upon a spindle 6. The jack is preferably supported in the machine in the same manner as the jack of the above Topham application, so that longitudinal and lateral tipping movements and lateral turning movements may be imparted to the jack to present the various parts of the shoe to the fastener insertin mechanism. As illustrated and described in said application, the supporting devices for the jack are connected with the lower end of the jack spindle and are constructed and arran ed so that the spindle is'freely rotatable an is free to tip in any direction about its lower end, and that the lower end thereof is free tomove in any horizontal direction.

As stated above, the jack of the present application is constructed and arranged so t at upon the placing of the shoe on the jack the shoe is automatically located in a predetermined and unvarying position lengthwise of the jack regardless of the size of the shoe placed on the jack and is securely clamped in adjusted position, and that, at the completion of the operation on the shoe, the shoe is unclamped and the parts of the jack are restored to their initial positions ready for the application of another shoe to the jack. The jack comprises an arm '8 rigidly secured to the spindle upon the upper end of which the toe rest'4 is mounted, an

arm 10 pivoted at 12 to the central portion and a lever 14 pivoted at 16 onthe arm 10 and having the heel support 2, consisting of a last pin, mounted thereon. The arm 10 is acte upon by a coiled spring 18 which tends to swing the same toward the arm 8. This spring is connected with a pin 20 mounted in a lever 22 and having its ends engaged in slots 24 in thearm 10. The lever 22 is pivoted at 26 on the arm 10, and is connected with the lever 14 through intermeshing gearteeth. The spring 18 thus, under certain conditions, tends to swing the lever 14 in a direction to depress the toe of the shoe.

of the jack-frame,

" -Before a shoe is placed on the jack preparatory to starting an operation, the arm 10 is held in a position relatively remote from the arm 8 against the tension of the spring 18, as shown in Fig. 1. The mechanism for .holding the arm in this position comprises a lever 28 pivoted at 30' on the jack-frame, a toggle 3234 connecting the lever 28 with the arm 10, a lever 36 also pivoted at 30 and carrying an abutment screw arranged to engage the lever 28, a bevel gear 38 meshing with a gear segment 40 formed on the lever 36 and a shaft 42 to which the gear 38 is secured, passing centrally through the spindle 6 Devices are connected with the lower end of the shaft 42 which hold the shaft from turning move ment While permitting the, shaft to tip in any direction with the jack spindle.

The toggle 32-34 before a shoe is placed on the jack isv in a straightened condition as shown in Fig. 1, thereby holding the arm 10 in position against the action of the spring 18.- Upon the placing of the shoe on the jack the toggle is broken by the depressing movement imparted to a vertically movab e pin 44 en aged by the last which operates throng certain connections to a ratchet wheel 54. A

swing the outward member of the toggle upwardly. These connections comprise a pivoted dog 46 mounted on a block secured to the lower end of the pin 44 and arranged to engage a lateral projection on an arm 48 secured to the member 34 of the toggle. The

pin 44 is depressed by the engagement of the with the upper face of the, toe rest, which is mclined so that the toe of the shoe is lifted as it slides along this surface, thereby swinging the levers 14 and 22 relatively to the arm 10 and bringing the spring 18 into action on said levers. Thus when the shoe is finally located on the jack and the swinging movement of the arm 10 ceases, the spring 18 acts to maintain the shoe in ad- 'usted position longitudinally of the jack, and the tendency of the spring to tilt the lever 14 in a direction to depress the toe of the shoe clamps the shoe firmly on the jack. When the toe of the shoe reaches a redetermined position with relation to the ack the swinging movement of the arm 10, under the action of the coiled spring 18, is positively arrested. The mechanism for stopping the swinging movement of the arm comprises a bar 50 pivotally connected at one end with the arm and provided with rack teeth at its other end engaging a pinion 52-journaled in the arm 8 to which is secured pawl 56 is arranged to engage the ratchet wheel 54 and is controlled through a pivoted latch 58 and a rod 60 from a feeler lever 62 arranged to be engaged.by the toe of the shoe. shoe is applied to the jack, the pawl 56 is held out of engagement with the ratchet wheel 54 by a projection on the bar 50. During the adjusting movement of the shoe the pawl is held ,out of engagement with the ratchet wheel by the latch 58, allowing the ratchet wheel to rotate freely. When the bulge in the toe portion of the upper engages the feeler lever 62 the latch 58 is actuated to release the pawl and the pawl engages the ratchet wheel, thereby stopping the swinging movement of the arm 10.

During the turning movement imparted to the jack in an opcrationon a shoe, the toggle 32-34 is straightened through the engagement of the gear segment 40 with the non-rotating gear 38. During the turnin movement in the reverse direction imparte to the jack in restoring the same to starting position after the completion of the operation, the toggle is actuated to swing the arm 10 back to the position shown in Fig. 1, thereby unclampin the shoe so that it is free to be lifted from tide jack.

\Vhen the 72 secured to the shaft.

" yieldingly against the upper.

The devices for engaging the upper and pressing the same down into position with relation to the marginal portion of the sole consist of arms 64: mounted on opposite sides of the jack and having inwardly curved outer ends arranged to engage the outside of the upper adjacent its margin, as shown in Fig. 3. To enable thearms 64 to swing toward and from the shoe, the arms are mounted respectively upon rotatable shafts 66 engaging in bearings carried respectively by the arms 10 and 8. Each of the upper engaging arms 6-1 is loosely mounted on the corresponding shaft 66 and is acted upon by a coiled spring 68 which tends to swing the arm inwardly relatively to the shaft. The movement of the arm under the influence of the spring, however, is limited by the engagement of the arm with a lateral projection 70 formed on a collar \Vith this construction, as the shafts 66 are turned in a direction to swing the arms 64 outwardly,

the arms are swung with the shafts by the engagement of the projections 70 with the arms. As the shafts 66 are turned in the opposite direction to swing the upper engaging arms inwardly, said arms swing with the respective shafts until the ends of the arms engage the upper, wipe the upper over the last, and force the same down firmly into position with relation to the marginal portion of the sole. During the further turning. movement of the shafts the springs 68 allow the arms to yield with relation to the shafts, and the arms are held Each of the shafts 66 is journaled at its left hand end in a block 73 pivoted by means of a stud 74 to the swinging arm' 10, and the opposite end of the shaft is mounted to turn and slide longitpdinally in a bearing in a sleeve 76 pivoted by means of a stud 78 to the arm 8,

With this construction the right hand end of each of the shafts 66 slides through the corresponding sleeve 76 as the arm 10 is swung toward and from thearm 8, as will be-clear from an inspection of Fi 1 and 2. Whenthe arm 10 is located in t e position shown in Fig. 1, the upper engaging arms 64 are locatedin their outer positions, as shown indot and dash lines in Fig. 3. As the arm 10 is swung toward the arm 8 to adjust and clamp the shoe, the shafts 66 are turned to swing the upper engaging arms 64 into their inner positions, as shown in full lines in Fig. 3. As the-arm 10 is swung back to the position shown in Fig. 1 to unclamp the shoe, the shafts 66 are rotated to swing the upper engaging arms 64 back to their outer positions. Each of the shafts 66 is rotated in the manner described by the engagement of a roll 80 mounted jack, these devices are swung two shafts'are so constructed that asthearm 10 is swung toward the arm 8 to adjust and clamp the shoe, the movement of the shafts through the sleeves 76 will cause the shafts to be'turned in a direction to carry to upper engaging arms 64 inwardly into engagement with the upper, and that as the arm 10 is swung back away from the arm 8 to unclamp the shoe the movement of the shafts through said sleeves will cause the shafts to be turned in the opposite direction to swing the upper engaging arms outwardly to their initial positions. Thus when the parts of the jack are in position to receive the shoe the upper engaging devices are widely, separated so as not to obstruct the placing of the shoe on the jack. As the shoe is adjusted and clamped on the inwardly into as the shoe is upper holding positions an the jack are u'nclamped and the parts of restored to their initial positions, said de vices are swung outwardly .so as not to obstruct the removal of the shoe from the jack.

The upper engaging arms 64 are preferably each constructed in two parts, as shown clearly in Figs. 2 and 3, the outer part of each ofsaid arms being secured to the inner part thereof 'by screws 84 passing through slots 86 in threaded into the inner part. This enables the outer part of each arm to be adjusted relatively to the inner part to vary the said outer part an length of the arm.

As illustrated in the drawing, the upper engaging arms are especially constructed for use in sewing the inseams of welted and turned shoes, and are arranged to engage the upper along the shank of the shoe upon opposite sides thereof so as to hold the upper in position tobe sewn to the sole without any preliminary side lasting. These arms are located so as to hold in position close to the marginal portion of the sole without interferin with the needle or with the other parts 0 the inseam sewing mechanism and therefore may be maintained in operating position during the entire sewing operation. Fig. 3 shows the positions in which the needle and the welt guide operate with relation to the upper engaging arms, these parts being sh the upper ownin 4 til dot and dash lines in this figure and being indicated by reference numerals S8 and 90 respectively.

Having explained thenature and ohject of the invention. and having specifically described a mechanism emhodving the in-.

ventionin its preferred form. what is claimed is: I

1. shoe supporting jack having. in combination. a support for a .asted shoe. one or more devicesrfor engaging the upper and causing the same to conform to the last. operating to hold the upper in'positi n to he attached'to a rihhed sole during the formation of a line'of fastenings through the upper and. rih in a plane parallel to the sole surface, 'means 'for supporting said devices for movement into and out of operating positions, and a1itomaticallv acting mechanism for actuating said devices.

2. A shoe supporting ja k havin in comhination, a support for a lasted shoe. mechanism for clamping the shoe on the jack. one 'or moreidevicesfor engaging the upper at the sides of the last and causing th upper to conform to the last. and mechanism arranged to he actuated to move said devices into upper holding positions as the shoeis initially clamped on the jack.

"31A shoe supporting jack having. in combination, a support fo'a lasted shoe, mech anism for adjusting the shoe on the jack. one or more devices for engaging the upper and causing'the same-to conform to the last, and mechanism arranged to he actuated to move said devices into operating positions as the shoe is adjusted on the jack.

4. A shoe supporting jack having incombination, a support for a lasted shoe, mechanism for adjusting the. shoe on the jack. mechanism for restoring the parts of the jack to their initial positions. one or more niovahle devices for engaging the upper and causing the same to conform to the last. and means arranged to be actuated to move said devices out of operating positions as the parts of the jack are restored to their initial positions.

5'. A shoe supporting jack having, in comhination. a support for a lasted shoe. a pivoted upper engaging arm for causing the upper to conform to the last. a shaft on which said arm is mounted to turn relativel to the shaft. a spring connecting the arm with the shaft to cause the arm to swing with the shaftas the shaft is turned in a direction tocarrv the arm toward the shoe and allowing the arm to yield relatively to the shaft after the arm engages the shoe, and an abutment carried by the shaft for engaging the arm to swing the, arm away from the shoe as the shaft is turned in the opposite direction.-

6. A jack for shoe machines having. in combination, a support for a lasted shoe. a pivoted arm for engaging the upper and causing the same to conform to the last. a shaft uponwhich said arm is mounted. a cam face formed on the shaft. a roll engaging said cam face and cooperating there.- with to turn the shaft to swing the arm toard and from the shoe as the roll and shaft are moved relatively in directions lengthwise of the shaft. and means for relatively moving the roll and shaft.

7. i\ jack for shoe machines having, in comhination. two arms mounted for relative movement toward and from each other. a heel support mounted on one of said arms, a toe rest mounted on the other of said arms, a pivoted arm for engaging the upper and causing the same to conform to the last. and mechanism operating respectivel during the relative movement of the first two arms toward and from each other to swing the upper engaging arm toward and from the shoe.

5%. A shoe supporting jack mechanism having. in coml. 'nation. a jack for supporting a lasted shoe. one or more devices for engaging the upper and holding it in position to he attached to the sole. and mechanism acting autom: ticallv when thrown into operation to jack :1 shoe placed on the jack and to move said devices into engagement with the upper.

9. shoe supporting jack mechanism having. in combination. a jack for supporting a lasted shoe. one or more engaging the upper and holding it in position to he attached to the sole. and mechanism acting automatically when thrown into operation to clamp the shoe on the jack and to move said devices into engagement. with the upper.

10. A shoe supporting jack mechanism having. in combination. a jack for supporting a lasted shoe. one or more devices for engaging the upper and holding it in position to be attached to the sole. and meclr anism acting automatically when thrown into operation to locate the shoe in a predetermined position longitudinally on the jack and to move said engaging devices into engagement with the upper.

11. A shoe supporting jack mechanism having. in combination. a jack for supporting a lasted shoe. one or more devices for engaging the upper and holding it in position to he attached to the sole. mechanism acting automatically when thrown into operation to jack a shoe placed on the jack and to move said engaging devices into engagement with the upper. and mechanism acting at the-completion of an operation on the shoe to unjack the shoe, restore the parts of the jack to initial position and move devices for said engaging devices out of engagement be attached to the-sole, and means for movwith the upper. ing said devices into engagement with the 12. A shoe supporting jack having, in shoe during the relative movement of the 10 combination, a toe rest and a heel support toe rest and heel support in adjusting the shoe on the jack.

JAMES GAVANAGII. LAURENCE TOPHAM.

5 relatively movable to adjust the shoe on the jack, one or more devices for engaging the-upper and holding it in position to

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