US1984453A

US1984453A - Machine for operating upon shoe parts

Info

Publication number: US1984453A
Application number: US690914A
Authority: US
Inventors: Bates Arthur; Hazelton George
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1932-10-01
Filing date: 1933-09-25
Publication date: 1934-12-18
Anticipated expiration: 1951-12-18

Description

18, 1934. A, BATES Er M 1,984,453

MACHINE FOR oERATING uPoN sHo'E PARTS Filed septx 25, 1935 4 sheet-sheea 1 Dec. 18, 1934. A BATES ET AL 1,984,453

MACHINE FOR OPERATING UPON SHOE PARTS l Filed Sept. 25, 1953 4 Sheets-Sheet 2 E @er Dec. 18, 1934. A @A755 Er AL 1,984,453

` MACHINE FOR wBATING-UPON SHOE PARTS Fil sept. 25, 1953- 4 sheets-sheet 3 l 0%, afa 67a Dec. 18, 1934. LA. BATES BTM. u 1,984,453

AGHINE FOR OPERATING UPON SHOE PARTS Filed sept- 25, 195s 4 Smets-sheet. 4

IHIIIIIII 7M' 76,722 we 777 4L. .9 WVM/72755.

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jack is not presenting a heel for scouring the Jack in question will be at rest and will be so positioned that its heel clamping means are removed from the scouring band B adjacent to the Jack. When the jack is in this position a heel may be clamped in the jack and thereupon, on suitable actuation of a starting handle S (Figs. l and 4), the jack is automatically swung about its pivots so that the heel H ocarried by the jack is moved towards a portion of the scouring band B which is backed by a presser roll P and at the same time the model heel M is moved towards means (actually formed as two rolls) with which it is adapted to contact to control the position of the jack during the scouring operation. Suitable driving means are provided whereby both the heel H to be scoured and the model heel M held by the jack are rotated in one direction and then in the other in unison during the scouring operation. This movement communicated to the heel H causes it to turn in one direction so that its side l"surface from one breast edge thereof round the rear of the heel. to the other breast edge is presented to the scouring band B, whereupon the turning movement is reversed and the side surface is scoured inthe opposite direction. 'I'he machine is provided with mechanism which may be set so that the heel is turned as aforesaid a definite number of times to be scoured by the band and thereafter the Jack is automatically withdrawn from the band to its initial workreceiving position and the turning movement of the heel in the jack stopped. During scouring the model heel or templet M is turned in a manner corresponding to that in which the heel H is turned and serves as cam means which acts to swing the jack about its pivots in predetermined manner so that the aspect of presentation of the heel H to the scouring band B is altered as the heel is being scoured in such a way that the various portions of its side 4surface are properly scoured despite the varying curvature of the heel at different points around its side surface. 'I'he degree of completeness of the scouring operationwill depend upon the number of times that the heel is turned back and forth in contact with the scouring band and this number will depend upon the setting of the mechanism aforesaid. The machine being provided with two jacks the operator conveniently removes a scoured heel from and inserts a fresh heel in one jack While the other jack is presenting another heel to its adjacent scouring band B.

A detailed description of the illustrative machine will now be commenced.

The machine comprises a frame 501 (Figs. 1 and 2) having at its upper portion two arms 503 one at each side of the machine, extending upwardly and slightly rearwardly therefrom. At the locality at which the arms 503 extend from the frame, the frame has journalled therein a horizontal shaft 505 having thereon a pulley 507 round which passes a belt 509 which also passes about a pulley 511 xed on a shaft 513 journalled in bearings near the foot of the frame. The shaft 513 has fast and

loose pulleys

515, 517 mounted on it at its right hand end and may be driven by a belt from an external source of power. A belt shifter 519 is provided. The shaft 505 has also fixed thereto a pulley 521 about which passes a belt 523 which also passes about a pulley 525 mounted at the middle portion of a horizontal shaft 527 journalled in the arms 503 at the upper end portions thereof. The shaft 527 has two forwardly projecting arms 529 pivoted thereon, the mounting of one of the arms being shown clearly in Fig. 8. Each arm 529 is actually mounted on a sleeve 531 clamped in one arm 503 by a set screw 533, and the shaft 527 is journalled in a ball bearing 535 secured in position by a second sleeve 537 surrounding the shaft 527 but located within the sleeve v531. The sleeve 537 is held in place by a nut 539 threaded on to the end of the shaft 527. The two arms 529 are located one at the right hand end portion and the other at the left hand end portion of the shaft 527. 'I'he mounting of the right hand arm 529 is illustrated in Fig. 8 but the mounting of the left hand arm 529 is similar.

It has been mentioned hereinbefore 'that the machine is provided with two heel scouring stations. 'Ihe scouring instrumentalities at each station are similar and it will suillce herein to describe only the right hand one. 'Ihe right hand arm 529 has freely rotatable therein at its forward end a short horizontal shaft 541 which (see Fig. 8) extends from the arm 529 at each side thereof and has fixed thereto a pulley 543 at its left hand side and a flanged pulley 545 at its right hand side. Mounted on the shaft 505 directly below the flanged pulley 545 is a similar flanged pulley 547 (Fig. 2), and passing about the pulleys 545, 54.7 is the scouring band B. The pulleys 545, 547 are conveniently of about 6 inches in diameter and have flanges about 1/4 inch in height around their peripheries. The pulley 545 is driven by a belt 549 which passes around the pulley 543 and also around a pulley 551 on the shaft 527.

In threaded relation with a cylindrical block 553 mounted in a horizontal bore in the arm 529 is a substantially vertical rod 555. At its lower end this rod bears against a cup formed in a lug 557 on the fixed arm 503. A. handwheel 559 is attached to the upper end of the rod 555 and the arrangement is such that by rotation of the handwheel the separation of the anged pulleys 545, 547 can be adjusted to accommodate slight variations in the length of the band B and also to allow the band B to be removed from the pulleys when it is desired to do so. f

'Ihe scouring band B consists of an endless band of abrasive cloth conveniently about 3 inches in width. To render the band highly flexible to enable it to conform as well as may be to a curved surface being scoured the band is cut with a large Ynumber of parallel series of slits running lengthwise thereof. The nature of the band is seen in Fig. 11. The slits 561 of each series are conveniently about an inch or slightly more in length and are separated from each other in the length- Wise direction by about nl, inch while the different parallel series of slits are separated from each other in the widthwise direction by about 1,/8 inch. 'Ihe positions of the slits in adjacent series are conveniently staggered somewhat to reduce any weakening effect of the slits on the strength of the band. If the endless band is made by lapping and adhesively securing together the two ends of a strip of abrasive cloth, the abrasive material is conveniently removed from the band in the neighborhood of the lapped joint in order to avoid any irregular scouring effect which might be caused on account of increased thickness of the band at the locality of the joint.

In order that any tendency of the band B to run out of centre on its pulleys 545, 547, and so to foul its edge against the anges on the pulleys, may be corrected a freely rotatable roll 563 is provided, which lightly bears against the inside surface of the rear-stretch of the band not far from the pulley 545. This roll 563 is-mounted on a short shaft 565 extending towards the right from a member 567 having a stem portion carried in the lower end of an arm 569 which itself has a stem portion secured by a nut 571 in a substantially vertical bore in the arm 529. The mounting of the roll 563 is such that the angular position of its axis may be adjusted by rotation of the arm 569 'about the axis of its stem portion upon loosening the nut 571, and such adjustment can be made to make the band B run centrally on its pulleys should in fact it show a tendency to foul against the flanges on the pulleys.

. 'I'he presser roll P already referred to is shown in Figs. l, 2 and 12. 'Ihis roll is freely rotatable upon a stud 573 which is horizontal or substantially so, projecting to the right from thev lower end of an arm 575. 'I'he arm 575 is pivoted about a horizontal axis 577 to a lug 579 projecting forwardly from the forward end of the arm 529. The arm 575 extends above its pivot 577 and a tension spring 581 is connected at one end to the upper end of the arm 575 and at the other end to a draw-bolt 583 which passes through a bore in a lug 585 on the arm 529. A wingnut 587 is provided in threaded relation with the draw-bolt 583 and by adjusting this wing-nut the tension of the spring 581 may be controlled.

The presser roll P as best seen .in Fig. 12 comprises a metal hub 589 between which and the stud 573 a ball bearing 590 is arranged and on which is mounted a wooden roll 591 having a bore therein lined by a sleeve 592 xedly secured thereto. The wooden roll 591 is secured in place on the hub 589 by a hand nut 594 and can be removed therefrom when the hand nut is taken oif. The wooden roll has a covering 596 of felt and the.roll is so formed thatthe curvature of its peripheral surface in a direction parallel to the axis of the roll corresponds substantially to the curvature, in the heightwise sense, of the rear portion of the side surface of a heel of the shape that it is desired that the machine should operate upon. The diameter of the'roll P is preferably substantially the same at each side of the roll and may conveniently be about 3]/2 or 4 inches while the roll is of substantially the same width as is the scouring band B. 'I'he presser roll P is pressed by the action of the spring 581 against the rear surface of the forward vertical run of the band B behind the locality at which as hereinafter to be described the jack J presents a heel to be scoured to the band.

From the foregoing description it will have become clear that each oi the two pulleys 545 and 547 on which the band B runs are separately driven. 'I'he speed of rotation of the two pulleys is the same and the direction of rotation is such that the forward run of the band moves in the direction of the arrow in Fig. 2. This arrangement results in the forward vertical run of the band B being enabled to run under less tension than it would be if only one of the pulleys (say the pulley 547) were to be driven, and the band B can thus conform itself more satisfactorily to the curvature of the surface of the presser roll P over which it passes. k

The right hand one of the two heel supporting jacks J will now be described. It will be understood that the left hand jack J is of corresponding construction and so `need not separately be described. The right hand jack J is best shown in Fig. 3 and comprises a frame 593 shaped more or less in H-form. The mounting of the jack will now be described. Pivoted to the jack about an axis parallel to the two side portions of the Jack frame 593 by means of a rod 595. which is freely rotatable in bearings'in the jack frame, is a block 597which block is located substantiallycentrally of the Jack in an aperture formed in the cross-portion of the jack frame. pivoted to a yoke-member 599 about

co-axial pivots

601, 601 at right angles to the axis of the rod 595. 'I'he yoke-member 599 has a horizontal stem 603 projecting forwardly therefrom which is received in a bore at the upper end of a bracket 605 and normally clamped in fixed relation to the bracket by means of a screw 607. 'I'he bracket 605 is mounted on a fixed portion of the frame of the machine but is capable of being adjusted in a lateral direction by manipulation of two

setscrews

609, 609 which bear against opposite sides of a tongue-portion at the lower end of the bracket which is received in a suitable groove 611 in the frame oi' the machine. This adjustment enables the position of the jack J laterally with relation to the scouring band B to be altered if it be so desired. It will be realized that the mounting of the jack is such that the jack can be swung about two axes, i. e. the axis of the rod 595 and of the

pivots

601, 601.

At its upper portion the jack J comprises means for clamping therein a heel H to be scoured. Re-

ferring particularly to Fig. 3 in a bore formed in the left hand side of the jack is a sleeve 613." 'I'his sleeve 613 has a forked lug 615 which embraces a grooved portion of an adjusting screw 617 which is in threaded relation with the jack-frame 593. The `arrangement is such that the screw 617 is prevented from moving axially with respect to the sleeve 613 and thus when the screw is rotated the position of the sleeve in its bore in the jack is adjusted. Secured internally within the sleeve 613 by screws 619 are two spaced bearings 621 for a shaft 623 which carries at its right hand end heel clamping means hereinafter to be referred to. The shaft 623 has a reduced left-hand end portion 625 on which is carried a thrust ball bearing 627 against the left-hand side of which abuts a cam block 629 freely rotatable upon the portion 625 of the shaft 623 and the right hand portion of which is located within the sleeve 613. A handle 631 is'provided wherebyfthe angular position of the cam block 629 in the sleeve 613 can be controlled. The cam block 629 is retained upon the shaft 623 by means of a washer and a nut 633. As is shown in Fig. 9 the cam block 629 has two

cam grooves

635, 635 formed in it in which engage pins 637, 637 projecting internally inside the sleeve 613 and held in position by screws 639, 639. The arrangement just described is such that on moving the handle 631 in one direction or the other the shaft 623 is moved axially towards or away from the centre of the jack relatively to the sleeve 613 while on rotating the screw 617 the sleeve 613 and the shaft 623 are moved bodily together.

Between the two bearings 621, 621 a gear 641 is mounted on the shaft 623. The shaft 623 is capable of axial movement with respect to the gear 641 but the gear is keyed to the shaft so that no relative angular movement can take place between them. As will be appreciated from Fig. 2, the sectioned portion of which figure illustrates parts hereinafter mentioned at the right hand side of the jack which are similar to certain of the parts now being described, the sleeve 613 has a portion cut away in the neighborhood of the gear 641 to expose va number of the teeth thereof. These exposed teeth of the gear 641 are engaged by the teeth of a rack bar 643 which is mounted in The block 597 is also a groove formed in the left hand side of the jack frame so as to be capable of sliding movement relatively to the jack frame. The rack bar 643 extends downwardly to the lower portion of the` jack and is retained in place by suitable cap plates 645..

Secured to the forward side of the jack by screws 647 are two

brackets

649, 649 in which brackets is journalled a shaft 651 extending across the jack. At its left hand side the shaft 651 carries a bevel gear 653 which meshes with a bevel gear 655 mounted at the forward end of a short shaft 657 (Fig. 3) journalled in the left hand bracket 649, the bracket being recessed to form a casing for the gears 653. 655 which is closed by a cap plate 659. The rear end of the shaft 657 is connected by means of a universal joint 661 (Fig. 2) with a telescopic shaft 663 which is joined by a second universal joint 665 to a short shaft 667 (Fig. 5) journalled in bearings in a casting 669 fixed on the frame of the machine. As will be hereinafter described the shaft 667 is suitably rotated through a. predetermined amount in one direction and then. in the other during the operation of the machine and this through the connections just described will cause the shaft 651 also to be rotated through a predetermined amount in one direction and then in the other, the combination of the

universal joints

661, 665 and the telescopic shaft 663 allowing the shaft 651 to be driven in whatever position the jack J may have taken up. Fixedly mounted on the left hand p0rtion of the shaft 651 is a gear 671 the teeth of which mesh with teeth formed on the centre portion of the rack bar 643. Thus when as just described the shaft 651 is driven the rack bar 643 will be reciprocated and thus the shaft 623 will be rotated through a predetermined amount in one direction and then in the other.

Mounted in the jack frame 593 at the upper right hand portion thereof is a shaft 673 having at its left hand end heel clamping means to be hereinafter described adapted to co-operate with the heel clamping means at the right hand end of the shaft 623 to clamp a heel H therebetween. The shaft 673 is co-axial with the shaft 623 and its mounting comprises a sleeve 613' corresponding to the sleeve 613 already described and which is capable of being axially adjusted in the jack frame 593 upon rotation of a screw 617' corresponding to the screw 617. The shaft 673 has keyed thereto a gear 641' (see Fig. 2), and meshing with the teeth of this gear is a rack bar 643' carried in the right hand portion of the jack frame in a manner similar to that in which the rack bar 643 is carried in the left hand portion of the jack frame and retained in place by cap plates 645. The shaft 651 near its right hand end has fixed thereto a gear 671 which meshes with teeth formed at the middle portion of the rack bar 643. It will be appreciated that the arrangement of parts described is such that when the rack bar 643 is reciprocated as already explained the rack bar 643 is reciprocated in 'an exactly corresponding manner and hence the shaft 673 is rotated in one direction and then in the other in complete unison with the shaft'623.

'I'he means on the shaft 623, 673 for clamping the Aheel H will now be described. As will hereinafter become more evident it is desirable that the heel H should be clamped between the shafts 623, 673 in a definite angular relation with respect to the shafts, and the clamping means are particularly designed so that the operator may readily clamp the heel in the desired definite position.

Formed at the right'handendof the shaft 623 is a block having two ears 675 (see Figs. 3 and 10) A pin 677 extends between the ears 675 and on this pin is pivoted a T-shaped member 679 which is adapted to engage the attaching surface of a heel H. The member 679 has three sharp projections 680 on its heel engaging surface which are adapted slightly to penetrate into the heel to ensure that the heel will not slip with relationV to the member during a scouring operation. To

assist in positioning the heel H in a predetermined fashion in the jack J the heel H conveniently will have had formed at a predetermined location in its attaching surface a recess. This recess for example may be made in the heel during the heel compressing operation by making use of a die for pressing on the attaching surface of the heel comprising a sharp projection which will form the recess in the heel when pressure is applied. The heel H will conveniently have been trimmed to shape under templet control in a trimming machine which may ne provided with 'a spring pressed plunger the end of which plunger is adapted to engage in the recess in the attaching surface of the heel, so that when the heel has been trimmed under templet control the recess will be locatedin a definite predetermined position in the attaching surface of the trimmed heel and thus can be made to serve as positioning means to assist in the correct positioning of the heel in the jack of the scouring machine now being described. To `co-operate with the `recess in the attaching surface of the heel a spring-pressed plunger 681 having a pointed right hand end is mounted in a bore formed axially in the right handend portion of the shaft 623. The plunger 681 is slotted at 683 so that the pin 677 may pass through it, and the plunger itself passes through a clearance opening 685 in the member 679. Fixedly (but removably) mounted on the left hand end of the shaft 673 is a plate 687. This plate is adapted to engage the tread face of a heel to be scoured and is shaped in a manner substantially corresponding to the top piece of a heel to be operated upon (assuming that the machine is in fact used to scour a heel having a top piece thereon). T'he plate 687 is however slightly extended at the breast edge thereof and has projecting from its extended portion a short pin 689.

To clamp a heel to be operated upon in predetermined angular position in the jack J the operator (when the handle 631 occupies such a position that the member 679 is retracted as far as possible from Athe plate 687) will insert a heel between the member 679 and the plate 687 with its tread surface towards the plate-and its breast surface engaged by the pin 689. As has already been mentioned the plate 687 is shaped similarly to the top piece of the heel and the operator will find it a very simple matter to locate the heel angularly so that it occupies the same angular position with respect to the shaft 673 that the plate 687 does. The operator will next operate the handle 631 so that, as already described, the member 679 is moved towards the plate 687 until the member 679 contacts with the attaching surface of the heel. At the same time (or just previously) the plunger 681 enters the recess in the attaching surface of the heel and serves to ensure that the axis of the heel occupies a definite relation to the axes of the shafts 623 and 673. The projections 680 on the member 679 will just penetrate into the attaching surface of the heel to ensure that the heel will be maintained in proper position. The arrangement is such that when the handle 631 has beenmoved far enough to ensure proper clamping of the heel it will maintain itself in this position until the operator moves it in the opposite direction to release the heel.

Mounted in the lower portion of the jack J is an arrangement for clamping the model heel M for controlling the motion of the jack and for rotating the model heel in one direction and then in the other in unison with the motion communicated to the heel that is being scoured. The clamping arrangement for the model heel M comprises two

shafts

691 and 693 one mounted in the left hand side of the jack frame593 and the other in the'right hand side. The mountings of these .two shafts exactly correspond to the mounting already described on the shaft 673 and hence need not further be explained except to point out that two adjusting

screws

695, 697 are provided (corresponding to the adjusting screw 617') on rotating which the

shafts

691, 693 may respectively be moved axially in the jack frame. The shafts 691,-

693 have respectively gears 699, 701 (Figures 3 and 2) keyed thereon, and these gears respective- -hand end for contacting with the attaching face of the model heel M. The member 703 is similar to the member 679 and is mounted in a corresponding fashion. The shaft 691 has a plate 705 mounted on its right hand end for contacting with the tread face f the model heel M. This plate is shaped similarly to the plate 687 and has a pin 707 corresponding to the pin 689 pro' jecting therefrom. The plates 687, 705 occupy positions on their respective shafts displaced through 180 degrees with respect to each other and as the plate 705. is used to assist in angularly positioning the model heel M, the model heel M and the heel H when in place in the jack will be displaced, with reference to their angular positions, through 180 degrees one from the other. As the run of work through the machine will conveniently be controlled so that one model heel M will serve to control the movement of the jack during the scouring of a large number of heels it will commonly not be necessary to change the model heel M frequently, and accordingly no quick clamping arrangement corresponding to the handle 631 and associated parts is provided for the modelheel, and the clamping ofthe model heel M is dependent upon the adjusting screws 695, 697.

As will be hereinafter described when the jack is in its idle work-receiving position, the upper portion of the jack is held, by means subsequently to be referred to, removed from the scouring band B. When a heel scouring operation is to be commenced the means just mentioned allow the jack to be swung about its pivotal axes (i. e. the axis of the rod 595 and the axes of the pivots 601, 601) so that the heel H is presented to the portion of the vscouring band B backed by the presser roll P. To swing the jack in this manner two tension springs 709, 709 (Figs. 2 and 3) are provided, one at each side of the vertical centre line of the jack, and both below the horizontal centre line of the jack. Each spring has its rear end attached to a pin on the jack and its forward end attached to a pin on a triangular plate 711 which is fixedly mounted on the stem 603 of the yoke-member 599. When the

springs

709, 709 are allowed to swing the 'jack to present the heel H to the scouring band B the model heel M is brought into contact with the peripheral surlfaces of two rolls 713, 713 (Figures 2 and 3) which are mounted for free rotation upon

horizontal studs

715, 715 carried one at each side of the lower end of an arm 717 the upper end portion of which arm is iixedly secured to the yokemember 599. As will perhaps best be appreciated from-Figure 3, when the jack is swung into operative position by the

springs

709, 709 the model heel M '(if its sidesarecurved concavely like the model heel Ni shown inFigure 3) will contact with the

rolls

713, 713 only at the locality of its attaching face and at the locality of its tread face. As during a scouring operation the

shafts

691 and 693 are rotated as already described the model heel M will of course be similarly rotated, and since it is held in contact with both the

rolls

713, 713 by the action of the springs '709, 709, the model heel will act as a templet to cause swinging movement of the jack in a predetermined fashlon'. This swinging movement of the jack as is hereinafter more particularly described is such that the heel H to be scoured has lthe portions of its surface which are to be scoured properly presented to the scouring band B.

The means for actuating the shaft 667 already referred to and the means for allowing the jack to be swung into position at the beginning of a scouring operation and for retracting the jack at the end of a scouring operation will now be described.

At the rear of the machine the frame of the machine comprises two portions 719 (Figs. 2, 4 and 5), one at each side of the machine. Only the right hand portion 719 is shown in the drawings but both are similar and have mounted thereon similar mechanism. A single casing 721 (Figs. 1 and 4) is secured to the lower surfaces of both portions 719. *In this casing 721 is journaled a horizontal shaft 723 (Fig. 4) having fixed thereon a pulley'725, about which passes a belt 727 (Fig. l) which also passes round a pulley 729 on the shaft 513 already referred to. The shaft 723 is thus continuously driven. Fixed on the shaft 723 is a worm 731 (Figs. 2 and 4) which meshes with a worm wheel 733. The worm wheel 733 is freely rotatable on a vertical stud 735 fixed by means of a nut 737 in the lower surface of the casing 721. Also freely rotatable on the stud 735 .is a cam 739 which cam is keyed to the worm wheel 733 so that it is rotated thereby. The cam 739 has a cam groove 741 (Fig. 4) formedin its upper surface and in this cam groove engages a roll 743 mounted on a stud 745 depending from a horizontal link 747. The link 747 extends in a direction from right to left of the machine and at its right hand end is connected to and serves to actuate mechanism for operating the iight hand jack J and at its left hand end is connected to and serves to actuate exactly similar mecha.- nism for operating the left hand jack J. Only the right hand mechanism is shown in the drawings and will alone be described.

The right hand end of the link 747 is pivotally connected by means of a pin 749 (Fig. 2) to an arm 751 which projects from a sleeve 753 which is freely mounted on a vertical shaft 755 journalled in the right hand portion 719 of the frame.

'Ihe sleeve 753 is thus continuously oscillated upon the shaft 755 by means of the link 747, the arrangement being such that the total amplitude of the oscillation is about degrees. Means now to be described are provided for clutching, upon actuation of the starting handle S, the sleeve 753 to the shaft 755 for a definite period so that the shaft is oscillated a .definite number of times by the sleeve 753. Pinned to the shaft 755 immediately above the sleeve 753 is another sleeve 757 having projecting therefrom three arms 759, 761 and 763 (Fig. 4). In a vertical bore in the arm 759 a plunger 765, which is urged downwardly by a spring 767 (Figs. 6 and 7), is mounted. 'Ihe plunger is adapted when allowed to do so to engage (as indicated in Fig. 7) in a vertical hole in an arm 769 formed integrally with the sleeve 753. The arm 769 has a flat upper surface indicated by 771 on which the plunger 765 normally tracks as the sleeve 753 oscillates when the plunger is not engaged in the hole just referred to. When the plunger is engaged in the hole the

sleeves

753, 757 are clutched together so that the sleeve 753 oscillates the shaft 755. Freely mounted upon the shaft 755 above the sleeve 757 is another sleeve 773 having xed to its lower surface a plate 775. A portion of the plate 775 has ratchet teeth 777 formed on it, the arrangement being such that the teeth form a portion of a ratchet wheel concentric with the shaft 755. In Figs. 2 and 4 the parts are shown in the positions which they occupy when the jack is in inoperative position. When it is desired that the right hand Jael; should be operated the starting handle S is moved towards the right. The starting handle S is pivoted at its rear end to a fixed bracket 779 about a pin 781 (Fig. 4). When the forward end of the starting handle S is moved towards the right it serves to move in the same direction a push rod 783 which is slidably mounted in lugs 785 on the bracket 779. The right hand end of the push rod engages the tail of a pawl 787 also pivoted on the bracket 779 and normally held in engagement with the ratchet teeth 777 by means of a spring 789. When the'pawl 787 is released from the teeth 777 by the action of the push rod 783 the sleeve 773 and plate 775 are free to be rotated (in a counter-clockwise direction as seen from above) by means of a spring 791 (Figs. 2 and 5) connected at one end to the frame of the machine and at the other to a short chain 793 attached to the sleeve 773. The spring 791 is under such tension that when the starting handle is actuated as just described it will rotate the sleeve 773 until a stop lug 795 contacts with an 'adjustable stop 797 hereinafter more particularly described. The plate 775 has a slot 799 therein (Figs. 5, 6 and 7) adapted to embrace the upper portion of the plunger 765. Adjacent the slot 799 the plate 775 has formed thereon cam faces 801. The arrangement is such that when the plate 775 is moved as just described under the action of the spring 791 the cam faces 801 which underlie a head 803 on the plunger, allow the plunger 765 to be depressed under the action of its spring 767, and when inthe course of the oscillatory movement of the sleeve 753 the hole in the arm 769 registers with the plunger 765 the plunger enters the hole and clutches the

sleeves

753 and 757 together.

It is desirable as will hereinafter be made more clear that when the sleeve 757 is not clutched to the sleeve 753 it should not be free to move fortuitously but should occupy a fixed position. For this purpose a second plunger 805 (Figs. 2. 6 and 7) is provided. 'I'his plunger is mounted in a vertical bore in a fixed bracket 807 on the frame of the machine and the plunger is urged downwardly by a spring 809. The plunger 805 is free to slide in its bore but is prevented from moving angularly with respect thereto. Nuts 811 at the upper end of the plunger 805 limit the degree of possible movement of the plunger in the downward direction. Figure 6 illustrates the relation of the two

plungers

765 and 805 when the

sleeves

753 and 757 are not clutched together, while Figure 7 illustrates the state of affairs when the 'two sleeves have been clutched together but are just about to be released. At its lower end the plunger 305 has a hat head 813 formed thereon in which there is a recess 815 formed axially of the plunger. When the parts are in the position shown in Figure 6 this recess is engaged by a projection 817 on the upper surface of the head 803 of the plunger 765, and the plungers are held in nxed relative position. The plunger 805 being mounted in the fixed bracket 807, the sleeve 757 is thus held in a fixed position. When as already described upon actuation of the starting handle S the cam faces 801 allow the plunger 765 to move downwardly, the vprojection 817 disengages from the recess 815, and the connection between the plungers is broken. When towards the end of a scouring operation the parts reach the position shown in Figure 7 the plunger 765 will be moving in the direction of the arrow, and as it is cammed upwardly by the cam faces 801 its projection 817 will press upon the head 813 and urge the plunger 805 upwardly until, just after the withdrawal of the plunger 765 from the arm 769, the projection 817 enters the recess 815, and the plungers are thereby locked together. It may be remarked that when the plunger 765 is engaged in the hole in the arm 769, a iiat surface 819 (Fig. 2) on the arm 769 abuts against a fiat surface 821 formed on the arm 763 of the sleeve 757. When the parts are moving through the position shown in Figure 7 to that shown in Figure 6 the reaction between the `driving sleeve 753 and the driven sleeve 757 is taken by the abutting

surfaces

819 and 821 rather than by the plunger 765 so that a certain amount of latitude is permitted in the timing of the release of the plunger 765.

The number of complete oscillations communicated to the sleeve 757 and hence to the vertical shaft 755 by the sleeve 753.(and hence as will hereinafter become clear the number of turns communicated during scouring to a heel being operated upon) is dependent upon the setting of the stop 797. The stop 797 is formed on an arm 823 pivotally mounted on the shaft 755. Screwed to the frame of the machine is a plate 825 through a central hole in which the shaft 755 passes. The plate 825 has a number of recemes 827 out on a portion of its periphery which is curved concentrically with the shaft 755 while the arm 823 has mounted therein a spring pressed detent 829 which normally is engaged in one or other of the recesses 827 thereby locking the arm 823 in fixed position. The detent 829 has a knurled head 831 by which it may be withdrawn from the recess in which it is engaged and the arm 823 turned to a new position in which it will again be locked by the detent engaging in another recess 827.

As already has been mentioned upon movement of the starting handle to the right the sleeve 773 and the plate 775 will be rotated in a counterclockwise direction (as seen from above) until the stop lug 795 engages the stop 797. At about this stage the sleeve 757 will be clutched to the sleeve 753 and sowill begin to oscillate. Carried at. the end of the arm 761 on the sleeve 757 is a paw1833 (Fig. 4) which is urged by a spring 835 into engagement with the ratchet teethv 777 on the plate 775. During the greater portion of the oscillatory movement of the sleeve 757 the pawl 833 is held removed from the ratchet teeth 777 by the engagement of a tail-piece 837 of the pawl with a cam surface 839 formed on the bracket 779 and curved about a centre lying on the axis of the shaft 755. When however the sleeve 757 is towards the limit of itsmovement in one direction the pawl 833 is carried round by the arm 761 to a. position at which on account of a drop in the surface 839 the pawl 833 is allowed to engage w-ith the ratchet teeth 777. 'I'he movement of the sleeve 757 from the point where the pawl engages the teeth to the end of its oscillation in that direction is just sufficient to rotate the plate 775 in the clockwise direction as seen from above (against the action of the spring 791) through an angle equal to the angle subtended by one of the teeth 777 at the axis of the shaft 755. When in accordance with its oscillatory movement the sleeve 757 begins to move in the other direction the plate 775 is retained in position by the engagement of the pawl -787 with one of the teeth 777 (the starting handle S will have been released y by the operator immediately after is actuation so that the pawl 787 `will be free to engage the teeth 777). Thus as the sleeve 757 oscillates the plate 775 is rotated by an amount corresponding to one of the teeth 777 for each complete oscillation of the sleeve. Finally the plate 775 will be rotated so far in the clockwise direction (as seen from above) that the cam surface 801 will raise the plunger 765 in the manner already described and the sleeve 757 will be declutched from the sleeve 753. The arrangement of the recesses 827 in the plate 825 is such that the arm 823 may be locked in such positions that upon actuation of the starting handle the sleeve 757 will be allowed to make any small number up to seven complete oscillations before it is declutched from the sleeve '753 depending upon which recess 827 is engaged by the detent 829.

The jack has an arm 841 (Figure 3) projecting from its lower portion, and freely mounted in a bore at the end of 'this arm is a stud 843 which has a forked head 845 between the bifurcations of which is pivoted the forward end of a connectingv rod 847 (Figures 2, 3 and 4) When the jack is in inoperative position a hook 849 at the rear end of this rod is engaged on a pin 851 upstanding from the end of the arm 763 on the sleeve 757. The rod 847 thus serves to maintain the jack in inoperative position against the action of the springs 709 which at all times tend to swing the jack into operative position. When the starting handle S is actuated as already described and the sleeve 757 begins to oscillate the first movement of the arm 763 is in a clockwise direction (as seen from above) and this permits the rod 847 to be carried forwardly and the jack to be swung by the springs 709 into operative position. The rod 847 passes through a slot formed at the right hand end of a horizontal plunger 853 (Fig. 4) mounted in a bore in the portion 719 of the frame. A spring 855 urges the plunger towards the right. The rod 847 is prevented from escaping from the slot in the plunger yby a pin 857. When the jack is in the inoperative position the parts occupy the positions shown in Figure 4. The plunger 853 is maintained drawn towards the left by the engagement of a nger 859 formed on the plate 775 with a washer 861 held on the plunger 853 by nuts 863.

When as just described the starting handle S is actuated and the rod 847 is allowed to move forwardly the plate 775 (together with the sleeve 773) will have been rotated counterclockwise (as seen from above) and the spring 855 will therefore be allowed to move the plunger 853 to the right. As the arm 763 is rotated clockwise during the rst oscillation of the sleeve 757 the plunger 853 will serve to push the rod 847 to the right and this, with the help of a spring 865 (Fig. 2) suitably connected between the jack J and the rod 847, which spring acts to urge the rod 847 against the pin 857 towards the right hand portion of the slot in the plunger 855, will take the hook 849 clear of the path of movement of the pin 851. Thus the jack is allowed to remain in operative position despite the oscillatory movements of the arm 763. When however towards the end of the scouring operation the pawl 833 engages one of the ratchet teeth 777 to give the last rotational step in the clockwise direction to the plate 775 before the sleeve 757 is declutched from the sleeve 753, the plate 775 will be moved during this last rotational step so that the finger 859 will engage the washer 861 to move the plunger 853 into the position shown in Figure 4. This movement of the plunger will cause the rod 847 to be moved to tuated. The above-described mechanism comprising the pin 851 and the rod 847 thus constitutes a device for latching the jack in inoper-w ative position.

Pinned to the upper end of the shaft 755 is an arm 867 (Figs. 2 and 5). Pivotally connected to this arm 867 is one end of a link 869 the other -end of which is pivoted to a rack bar 871 which is mounted in a horizontal guideway formed in the casting 669. When the shaft 755 is'oscillated as already described the rack ba'r 871 is reciprocated in its guideway. The point of pivotal connection between the link 869 and the arm 867 may be adjusted along a slot 873 in the' arm 867 and by means of this adjustment the throw communicated to the rack bar 871 in each reciprocationi can be controlled. The rack bar 871 has formed on its upper surface teeth 875 which mesh with a gear 877 on the shaft 667 already mentioned. Thus when the starting handle S of the machine is actuated and the sleeve 757 and thus the shaft 755 is oscillated a predetermined number of times a corresponding number of reciprocations will be communicated to the rack bar 871. This will serve to oscillate the shaft 667 and this through the connections already described will serve to turn the heel H being scoured back and forward the predetermined number of times as its surface is presented tothe scouring band and at the same time to turn the model heel M in similar fashion.

While it is believed that the operation of the machine will have become clear from the foregoing description it may be convenient briefly to recapitulate the manner in which the machine may be used to scour a heel such as that indicated by H in the drawings. `It will be convenient to suppose that the loose heel H 'to be scoured has been trimmed and has a recess formed as already mentioned herein, in predetermined position on its attaching face. The operator will first insert a suitable model heel M in, say, the right hand jack J, the model heel M being clamped between the member 703 and the plate 705 in the manner already described herein so that the model heel occupies a predetermined angular relation with respect to the

shafts

691, 693. Ordinarily it will be found convenient to make use of a model heel such, for example, as a builtup heel of the same size and shape as that to be scoured, which heel has also been trimmed on the trimming machine just referred to, and one model heel will be used to control the motion of the jack during the scouring of a large number of similar heels. It will commonly be necessary however to change the model heel when heels of dierent height or of considerably differing shape have to be scoured. Instead of using as a model heel an ordinary trimmed built-up heel it may in some cases be desirable to provide a supply of model heels of more rigid material. For example, the model heels may be made of wood or cast to shape from aluminum or other metal. The presser roll P is shaped to correspond to the curvature of the side surface of the heel to be scoured. The operator will next operate the handle 631 to clamp the heel H to be scoured in the jack between the member 679 and the plate 687, and will take care that the heel is correctly positioned in the manner already described, viz, that the pin 689 contacts with the breast of the heel and that the top-piece of the heel registers properly angularly with the plate 687 while the plunger 681 enters the recess already referred to in the attaching face of the heel. Before commencing the scouring operation the operator will verify that when the jack J presents the heel H to the scouring band B it will do so in such position that the top piece of the heelwill contact with the band B fairly close to the right hand edge thereof. The position with relation to the band B that the heel should take up during scouring is illustrated by the heel shown in the left hand jack J in Figure 1. This position can be adjusted by means of the adjusting screws 609, 609. The angularity of the jack can be adjusted, if desired, by loosening 'the set screw 607. 'The detent 829 will be placed in one of the recesses 827 in accordance with the number of times it is desired that the heel shall be turned back and forth while being presented to the scouring band.. Ordinarily Very satisfactory scouring will result ii' the detent is so adjusted that the heel will be turned back and forth four times. It is desirable that the machine should operate to scour theside surface of the heel accurately from one breast edge thereof round the rear of Ithe heel to the other breast edge thereof, and it is thus important that during scouring the shafts 623, 673 should rotate back and forth through such an angle that this result is achieved. This angle is controllable by adjusting the position of the pivotal connection between the link 869 and arm 867 along the slot 873 in the arm 867, and the operator will have to verify that the connection is correctly located in the slot for any particular shape of heel that is to be dealt with.

Assuming that the heel H has been positioned in the right hand jack J the operator to commence scouring will press the starting handle S towards the right. Through the mechanism already fully described this will cause the sleeve 757 to be clutched to the constantly-oscillating l sleeve 753 andthe red su will be snowed te move forwardly so that the springs 709 may swing the jack so that the heel H is presented to the portion of the scouring band B backed by the presser roll P, the rearward motion of the heel H towards and in contact with the band B being limited by contact of the model heel M with the

rolls

713, 713. Further in the manner already described the heel H land the model heel M will be rotated in one direction and then in the other. The rotation of the model heel (which functions as a templet) when it is in contact with the

rolls

713, 713 will serve to cause swinging movements of the jack J about the axes of its pivots (i. e. about the axis of the rod 595 and the axis of the pivots 601, 601) and on account of the correspondence in shape being the model heel M and the heel H these swinging movements will be such that the aspect of presentation of the heel H to the band B will be altered as the heel turns in such manner that the surface -of the heel H will be properly scoured by the band despite the varying angularity of different portions of its surface. It has already been indicated that the attaching faces of the model heel M and of the heel H are located at opposite sides and that the model heel M is so clamped that it is always turned through an angle of 180 degrees with respect to the heel H. This disposition is necessary on account'of the relation of the two heels with respect to the pivots of the jack and on account of the fact that the band B is located behind the pivots of the jack while the

rolls

713, 713 are located forwardly thereof.

When the heel H has been turned back and forth the 'requisite number oi times in contact with the scouring band B the jack will, by the mechanism already described, automatically be moved into the inoperative position shown in Figure 2 and the turning movements of the heels stopped. 'I'he operator will then operate the handle 631 to release the scoured heel. Ordinarily while' a heel held by one jack is being scoured the operator will be removing a heel previously scoured from the other jack and inserting a new heel therein.

We have found that a scouring band provided with slits of the nature oi' the slits 561 already described is highly flexible and in conjunction with the presser roll P is capable of conforming itself to a curved heel surface very much more readily than a plain unslitted band would. Consequently the machine operates to scour even quite considerably curved heel surfaces with a high degree of efliciency.

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

1. A machine for operating upon shoe parts or like articles comprising an operating tool, a work support, a support for a templet, a frame in which said work and templet supports are mounted, a universally tiltable support for said frame constructed and arranged to enable said frame to rock about an axis passing approximately V.through the positions occupied by a work piece in said work support and a templet in said templet support and also to swing about a second axis angularly disposed to the first-mentioned axis and located between the positions occupied by the work piece and the templet, the swinging movement of the frame about the .second-mentioned axis serving to move the work support toward and from the tool. an abutment for the templet, and resilient means for swinging the frame about the second-mentioned axis to cause the work piece to engage the tool in a desired relation determined by the engagement of the templet with the abutment.

2. A machine for operating upon shoe parts and like articles comprising an operating tool, a work support movable toward and from said tool, a spring for urging said work support toward said tool to cause a work piece on said work support to engage said tool, means for oscillating said work support to cause oscillatory movement of the work piece while in engagement with said operating tool, a clutch in said oscillating means, a ratchet,means operated by said oscillating means for intermittently rotatlng said ratchet, and means carried by said ratchet for uncoupling said clutch to stop vthe oscillation of said work support upon the completion of a predetermined number of oscillations of the work piece.

' 3. A machine for operating upon shoe parts and like articles comprising an operating tool, a work support, means for oscillating said work support to cause oscillatory movement of a work piece while in engagement with said operating tool, a clutch in said operating means, -a ratchet, means operated by said oscillating means for intermittently rotating said ratchet from an initial position, means carried by said ratchet for uncoupling said clutch to stop the oscillation of said work support, and adjusting means constructed and arranged to vary the initial position of said ratchet and thereby to vary the extent of travel of said ratchet necessary to cause `said clutch members to be uncoupled, said adjusting means serving thus to determine the number of oscillations made by said work support.

4. A machine for scouring shoe parts and like articles comprising a scouring tool, a Work support, a frame in which said work support is rotatably mounted, said frame being mounted for movement toward and from said scouring tool, yieldable means for urging said work support toward said tool to cause a work piece to engage the tool, means for latching said frame in a position removed from said tool to facilitate loading and unloading of said work support,'0p

i erator-controlled means for releasing said latching means to enable said yieldable means to move said frame toward said tool to bring a. work piece in said work support into engagement with said tool, and means actuated by said operator-controlled means for turning said work support while the work piece is in engagement with the tool.

5. A machine for operating upon shoe parts and like articles comprising an operating tool, a

frame, a relatively stationary abutment engageable by a templet in said templet support, means for supporting said vframe for pivotal movement about an axis located between said work support and said templet support and also about an axis extending through the positions occupied by a work piece in said work support and a templet in said templet support, means for urging said frame about the rst-mentioned axis to cause the templet to engage the abutment and to cause the work piece to engage the tool, and means for moving said Work support and said templet support in unison relatively to the frame, whereby the templet in bearing against said abutment will control the position of said frame about both axes to cause the Work piece to be presented in a desired relation to said operating tool.

6. A machine for scouring heels and like articles comprising a. scouring tool, a pivotally mounted frame, a work support on said frame positioned on one side oi' the axis about which said frame is pivotally mounted and arranged to cause a work piece in said work support to engage said scour ing tool, a templet support on said frame positioned on the opposite side of said axis, driving means on said frame for moving said work support and said templet support in unison while a work piece in said work support engages said scouring tool, means for operating saiddriving means, and a relatively stationary abutment against which a templet in said templet support may react to swing the frame to vary in a predetermined manner the position of presentation of the work piece to said scouring tool.

v '7. A machine for scouring heels/and like articles comprising a'scouring tool, a frame, a work support carried by said frame, a templet carried by said frame, said templet having the desired contour of a scoured work piece, a relatively stationary abutment engageable by said templet,

means for supporting said frame for pivotal movement about an axis located between said Work support and said templet and also about an axis extending through said templet and a work piece in said work support, means for urging said frame about the flrst mentioned axis to cause the templet to engage the abutment and to cause the work piece to engage the tool, and means for rotating said work support and said templet in unison relatively to said frame, whereby the templet in bearing against the abutment will swing the frame about both axes to cause the work piece to be presented in a desired relation lto the scouring tool.

8. A heel scouring machine comprising a scouring tool, a frame movably mounted in relation to said scouring tool, means rotatably mounted in said frame for securing a heel on said'frame for engagement v with said scouring tool, means mounted in ,said frame for rotation about an axis parallel to the axis of rotation of said heel securing means for securing a templet having a shape corresponding to the desired shape of a scoured heel, a guide engageable with a templet secured in said templet securing means for guiding a heel in relation to said scouring tool, and connections constructed and arranged to cause said heel securing means and said templet securing means to rotate in unison, said heel securing means and said templet securing means ybeing constructed and arranged to facilitate the securing of the heel and of the templet respectively in a predetermined relation to each other.

9. A heel scouring machine comprising a scouring tool, a frame movably mounted in relation to said scouring tool, a pair of heel clamping mem-l bersior engaging the tread and the attaching surfaces respectively of a heel to be scoured, said heel clamping members being rotatably mounted in said frame at a locality to enable a heel clamped between them to engage said scouring tool, a pair of templet clamping members for engaging the tread andthe attaching surfaces respectively of a templet having a shape corresponding to the desired shape of a scoured heel, said templet clamping members being mounted in said frame for rotation about an axis parallel to the axis of rotation of the heelclamping members, connections for causing the rotations of the heel clamping members and the templet clamping members Pto take place in unison, and a. guide templet having an outline which corresponds to engageable with a. templet clamped between said the tread surface of the templet to enable the templet clamping members to guide the heel in operator to clamp the heel and the templet in a relation to said scouring tool, the heel clamping predetermined relation to each other.

member which engages the tread surfaces of the heel having an outline corresponding to that of the outline of the heel, and the templet clamping member which engages the tread surface of the ARTHUR BATES. WILLIAM RODERICK BARCLAY. GEORGE HAZELTON.