US1294443A - Work-support. - Google Patents

Description

P: H. GLASS WORK SUPPORT.

APPLICATlON man AUGJS. 191a.

Patented Feb. 18, 1919.

3 SHEETS-SHEET I.

P. R. GLASS.

WORK SUPPORT.

APPLICATION FILED AUG.I5. 1915'.

1,29%AQ3. Patented Feb, 18, 1919.

3 SHEETS-SHEET 2.

I" "I Q 666 700 flvvamw P. R. GLASS. WORK SUPPORT.

APPLICATION FILED AUG.I5.1916. v i glflfi. Patented Feb. 18, 1919.

3 SHEETS-SHEET 3.

1 1 WWW FPO,

ATET

PERLEY R. GLASS, OF-BROOKLINE, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY,

A CORPORATION OF NEW JERSEY.

WORK-SUPPORT.

Original application filed December 22, 1913, Serial No. 808,183.

Specification of Letters Patent.

15, 1916. Serial No. 114,996.

To all whom it may concern:

Be it known that I, PERLEY R. GLAss, a citizen of the United States, residing at Brookline, in the county of Norfolk and State of Massachusetts, have invented certain Improvements in Work-Supports, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to work supports and more particularly to work supports of the type known as jacks which are adapted to support a shoe in position to be operated upon both at the toe and at theheel end of the shoe. The invention is herein shown by way of illustration as embodied in a work support especially designed for use in connection with a fastening inserting machine of the type shown in my copending application Ser. No. 808,183, filed Dec. 22, 1913, of which application the present application is a division. It is to be understood, however, that the invention is not limited to use in connection with this particular machine but that it may be applied to other machines in which a shoe is sustained upon a work support while operations are performed upon the bottom of the shoe.

The principal object of the present invention is to provide an improved work support which will be so constructed and arranged as to be readily and conveniently manipulated to insure proper presentation of a shoe in position to be operated upon and to relieve the operator, so far as possible, of the labor incident to the use of the work support.

In accordance with an important feature of the invention, the illustrated work support is constructed and arranged for movement between work receiving position and work clamping position bot-h by hand operated means and also by treadle operated means, the construction and arrangement being such that the ack may be moved from a retracted position outwardly toward the operator to receive a shoe and then be returned to its retracted position and raised by movement of a hand lever to press the shoe against the usual abutment in the head of the machine, the treadle operated jack raising means being then usually employed to impart an upward thrust to the shoe to clamp it under considerable pressure.

In accordance with another feature of the invention, the hand operated jack raising means also controls means for locking the jack in work clamping position, the hand lever operating to effect such locking of the clamping movement of the work support altogether by the foot of the operator or by utilizing the hand lever to supplement the action of foot operated treadle.

In accordance with further features of the invention, the illustrated work support, which is movable toward and from the machine between an advanced work receiving position away from the machine and a retracted position as well as upwardly and downwardly between its retracted position and work clamping position, is arranged to be automatically locked against displacement horizontally from its retracted posi- :tion and also, in the preferred embodiment of the invention, the work support is automatically unlocked whenever it is moved out of its operative work clamping position to enable the work support to be returned therefrom into an advanced work receiving position.

These and other features of the invention,

will be apparent from the following description of a preferred embodiment of the invention when read in connection with the accompanying drawings and the novel features of the invention are set forth in the appended claims.

In the drawings 2-" Figure 1 is a side elevation ofa preferred form of work support embodying the present invention;

Fig. 2 is a detail in side elevation of the opposite side of the work support construction shown in Fig. l;

3 is a detail in vertical section along the line 88 of Fig. 1; and

Fig. 4k is a side elevation of a modified work support construction.

The illustrated work support or jack is especially adapted to support a shoe in inverted position for operations to be performed upon the bottom of the shoe, for example, by a machine such as shown in my above-mentioned co-pending application. To this end the jack. illustrated in Figs. 1. 2 and 3, comprises a post 6 11 which is pivoted at 642 to the base of the machine and swung about a horizontal axis toward and away from the front of the machine from an advanced work receiving position to a retracted position. The post 641 can ries at its upper end a table 64A upon which are mounted the carriers 6&6 and 6&8 respectively for a last pin 650 and a saddle 652. The carriers 6&6 and 648 are provided with dove-tailed faces 65% and 56 which slide in a horizontal dove-tailed guide in the upper face of the table 64:4. The table itself has a supporting bracket which is provided with a vertical dove-tail 660 sliding in a clove-tailed guide in the face of an enlarged part 662 of the post 641. The sliding connection between the bracket 658 and the head 662 of the post 641 provides for the vertical adjustment of the table 6% and therefore of the last pin and saddle. and the table is supported in its diiferent positions of vertical adjustment and is also lifted by eccentrics 66st and 665, F 8, one upon each side of the head 662. These eccentrics are carried upon a rock-shaft 666 which may be turned to effect the. rotation of the eccentrics by connections to a hand lever 668 and also by connections to a treadle 670. The operative connections by which the turning of the shaft 666 may be effected by the hand lever 668 comprises a segment rack 672 carried by said hand lever 668 which is pivoted at 669 to the post 641, said rack engaging teeth upon a pinion 674 attached to said rock-shaft 666.

The lifting of the table 64% through the connections described is for the purpose of moving the shoe up against the under side of the work abutment of the machine into work clamping position and preferably the hand lever is manipulated to efiect a pre liminary clamping of the shoe against the work abutment. In order to maintain the shoe clamped in this position, the hand lever 668 has pivoted upon its arm 675 a manytoothed pawl 676 which is adapted to engage teeth of aratchet 677 formed on a portion of the periphery of the eccentric 665. A spring 678 connected at one end to the end of said pawl remote from its pivot and at its other end to a hook upon the hand lever 668 tends to maintain said pawl normally in engagement with the ratchet. The pawl may be released by pressure upon a hand piece 680 connected to the upper end of a rod 681 which is connected at its lower end to the pawl 676, said hand piece 680 lying above a handle 682 which the operator grasps to move the hand lever 668.

As above suggested, in addition to the means described by which the jack can be moved between its retractedposition and its work clamping position by the manipulation of the hand lever 668, means is also provided by which this movement may be effected by the foot of the operator or by which the hand movement may be supplemented by the foot to impart an additional upward thrust to the shoe to clamp it under considerable pressure. The connections to the treadle 670 by which the movement of the jack may be supplemented by the foot comprise a segment rack 698 pivoted at 700 upon the post 641, said rack meshing with gear teeth 702 formed upon the eccentric 664C and being provided with a stud 70dadapted to be engaged by the shoulder 706 of a thrust link 708 forming one member of a toggle, the other member 710 of which is pivoted in the bracket 712 on the frame of the machine. A link 714 connected at one end to the treadle 670 and at its other end to the knee joint 716 of the toggle acts when the treadle is depressed to straighten the toggle and to force the shoulder 706 and the thrust link 708 against the stud 70% of the segment rack 698 and thus turn the eccentric 66% in a clockwise direction to raise the jack and clamp the work under somewhat greater pressure than can be obtained by the hand lever 668. As hereinabove pointed out, the jack may be swung bodily toward and away from the machine. When the jack is in a retracted position, the post 6%1 is substantially vertical and is maintained against displacen'ient horizontally from its retracted position by a locking device hereinafter described. This locking device comprises a slide 718 operatively connected at 720 to the post 641, said slide'being arranged to slide through a guide 722 in the standard 10 and being prevented from being withdrawn from said guide by a stop 724:. Pivoted at 725 upon a bracket 726 at the front end of the guide 722 is a lever 728 which carries at its rear end a locking pin 730 adapted to gravitate into a socket in the slide 718 when the post 6&1 is in its vertical position. The front end 729 of the lever 728 extends into the path of the segment rack 698 so that when the segment rack moves in the direction to lower the jack it strikes the lever end 729 of the lever 728 and withdraws the pin 730 out of the socket in the slide 718, thus releasing the jack so that it may be swung to its inoperative and work receiving position away from the machine, this movement, as above pointed out, being limited by the stop 724.

The last pin 650 is mounted upon a holder 651 which is pivoted at 649 to the top 647 of the carrier 646 whereby a limited lateral movement of the last pin is permitted to provide for the automatic centering of the last for the heel-seat trimming and nailing operations. The amount of lateral movement is limited by a shoulder 653 upon the top 647 which is engaged by a corresponding shoulder upon the holder 651. The saddle carrier 648 in which the saddle 652 is vertically adjustable in any suitable manner is mounted upon a slide 654, as hereinabove described, and this slide for purposes of adjustment is provided with a rack 732 with which meshes a pinion 734 provided with a hand wheel 736 by which it may be turned to adjust the saddle toward and away from the last pin 650.

In the preferred use of the jack above described, the operator first adjusts the toe post 648 relatively to the heel post 646 by means of the hand wheel 736 according to the size of shoe to be operated upon. The work support with the shoe thereon is then moved into its retracted position in which position it is automatically locked against lateral displacement by the locking pin 730 which engages a recess provided in the slide 718. The jack is then raised to clamp the shoe against the work abutments of the machine preferably by manipulation of the hand lever 668 which operates to rotate the shaft 666 and the eccentrics 664 and 665 engaging the bed 644. A final clamping pressure may then be imparted to the jack by depression of the foot treadle 670 which, through the rod 714, straightens the toggle 708 and 710. As this toggle is straightened the link 7 08 of the toggle engages the stud 704 on the segmental gear 698 to oscillate the gear to impart additional upward movement to the jack. The jack is then automatically locked in its final clamping position by the pawl 676 which engages co operating teeth on a portion of the periphery of the eccentric 665. When it is desired to release the shoe the hand lever is manipulated to release the pawl 676 allowing the work support to return to its retracted work receiving position. During the downward movement of the jack the rear portion of the segmental lever 698 engages the forward end 729 of the pivotal lever 728 so as to withdraw the locking pin 730 whereby the work support may be moved into its ad vanced position or toward the operator to remove the shoe therefrom.

In Fig. 4 is shown a modified jack construction having the same last pin 650, saddle 652, last pin carrier 646 and saddle carrier 648 and substantially the same adjust ing mechanism for the saddle carrier comprising a rack 732 and pinion 734. The table 744 upon which these parts are mounted is of a different shape from the table of the jack hereinabove described and is carried upon the upper end of a vertical sliding shaft 746 guided within a hollow jack post 748 which is fulcrumed at 750 to swing toward and away from the machine. Guideways 751 in the upper end of the post 748 prevent the table 744 from turning relatively to the post. At its rear end the table 744 is provided with an upward extension 752 to which is attached a toothed plate 7 54 adapted to be engaged by a plurality of pawl teeth formed upon the lower edges of plates 756 clamped in holder 758 extending between the two arms 760 of a yoke carried upon the upper end of a sliding bolt 762. The pawl teeth upon the plates 756 gravitate with said plates into engagement with the ratchet teeth upon the plate 754. It will be noted that the rear end of the plate 754 is beveled at 764 so that as the jack is pushed toward the machine the plate 754 will slide under the toothed plates 756 and raise the yoke, thus causing the jack to be automatically locked in its vertical work supporting position.

In order to raise the jack into work clamping position, means is provided for elevating the shaft 746 when the jack post 748 is in vertical position. The illustrated means comprises a cam 766 pivoted at 768 in the jack post 748, said cam engaging a roll 770 which is pivoted inthe lower end of the shaft 746 and having an arm 772 extending through a slot in the ack post 748 by which arm the movements of the cam are controlled. To raise the horn shaft 746 into work clamping position, the cam 7 66 is turned in a clockwise direction in Fig. 4 and the illustrated means for effecting this turning is manually operated. The turning is preferably effected by connections with a treadle lever 774 comprising a link 776 having a slot 778 which receives a pin 780 upon the cam extension or arm 77 2. The slot 778 is suitably elongated for lost motion whereby the swinging of the jack int-o and out of operative position beneath the nail block does not affect the position of the treadle. The slot is also of such length and so related to the movements of the treadle that when the treadle is permitted to rise to its uppermost position after being depressed to turn the cam into its operative position, the cam will not be returned to its inoperative position.

To effect the unlocking of the jack so that it may be swung away from the machine and at the same time to lower the work, means is provided whereby the pawl teeth may be raised out of engagement with the ratchet teeth upon the plate 75% and whereby at substantially the same time the table 7 44 may be lowered with the shaft 746. The illustrated means comprises a bell-crank lever 7 82 fulcrumed at 78st upon the jack post 748, said lever having upon one arm a han= dle 786 in convenient position to be grasped by the operator and havingupon the rear end of its other arm a face 788 so located with respect to "the sliding bolt 762 that as said lever is turned to raise this end the face 788 will engage the bolt 7 62 and raise the pawl teeth out of engagement with the ratchet teeth on the plate 754. At the same time a link 7 90 connected at one end to this arm of the lever 782 and at its other end to the arm 772 of the cam 766 will turn said cam in a counterclockwise directiomFig. 4:, and thus lower the shaft 746 and the table 744. The jack can thus be easily swung into position for the removal of the work. A spring 792 connected at one end to. an eyebolt 7 94 in the rear part ofthe standard of the machine frame and at its other end to a link796 hooked into the jack post 7 as aids the operator in moving the ack post into its operative position and resists too rapid movement ofthe jack post into its work receiving position.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. In a machine of the class described, a

work support, an opera-ting member mova'ble relatively thereto for raising'the work support into work clamping position and operating means for said membercomprising hand operated means and treadle operated means.

2. In a machine of the class described, a

work support, a treadle, connections from the treadle to the work support for raising the work support comprising a cam member movable'relatively to the work support, and hand controlled n'ieansoperatively connected withsaid cam member for raising the work support.

3. In a machine of the class described, a work support comprising shoe holding means and a support for said means, means movable relatively to said work support for-raising and lowering said support, a treadle, connections from the treadle to said raising and lowering means for rotating the same to raise the-support, a hand operated member, and connections from said hand operated member to said raising and lowering means for operating said lastmentioned means.

a. In a machine of the class described, in

combination, a work support movable between work receiving position and work clamping position, manually operated means for raising the work support toward work-clamping position and additional aces-es manually operated means for imparting an upward thrust to the work support,v each of said means being constructed and arranged to supplement the action of the other in raising the support to clamping position or to raise the support completely to clamping position independently of any act-ion of the other.

5. In a machine of the classdescribed, in combination, a work support movable between work receiidng position and work clamping position, hand operated means comprising-an ope-rating member movable relatively to the work support formoving the work support toward work clamping position, and treadle operated means for imparting additional work clamping movement in the same direction to the operating member.

6. In a machine of the class described, in

combination, a work support arranged to be swung from an advanced work receiving position into a retracted position, means for automatically locking the work support against displacement from said retractedposition, means for raising the-work support from said retracted position into work clamping position, and means for automatically unlocking the work support as it is moved to unclamp the work whereby it may be swung into shoe receiving position. 7. In a machine of the class described, 1n combination, a work support movable between an advanced work receiving position and a retracted position, manually operated zontally from said retracted position, and

means for automatically unlocking the. work support as it is moved to unclamp the work whereby the work;support may be moved into shoe receiving position.

8. A; work support comprising, in combination, adjustable shoe holding means movable betweenan advanced work receiving position and a retracted position, a support for said means, a connection between said shoe holding means and said support constructed and arranged to move said shoe holding means into work clamping position relatively to its support, and interconnected hand operated and treadle operated means for operating said connect-ion.

9. A work support, comprising, in combination, shoe holding means, a support for said means, an adjustable; hand operated and treadle operated connection between said shoe holding means and said support constructed and arranged to raise and lower said shoe holding means on said-support, and means for engaging said connection to lock the same in adjusted position.

10. A work support comprising-in combination, shoe holding means movable between an advanced work receiving position and a retracted position, a support for said means, connections between said shoe holding means and said support constructed and arranged to raise and lower said shoe holding means on said support, and manually controllable means for locking said shoe holding means in adjusted position.

11. In a machine of the class described, a work support, means for raising the work support into work clamping position comprising hand operated means and treadle operated means cooperating to this end, and means, constructed and arranged to operate during upward movement of the work support, for locking the work support in work clamping position.

12. In a machine of the class described, a work support arranged to be moved from an advanced work receiving position into a retracted position, means for raising the work support from its retracted position into work clamping position comprising hand operated means and treadle operated means, and means operable during upward movement of the work support for automat-ically locking the work support in work clamping position.

13. In a machine of the class described, a work support arranged to be moved from an advanced Work receiving position into a retracted position, means for raising the work support from its retracted position into work clamping position comprising hand operated means and treadle operated means, means for locking the work support against displacement from its retracted position, and means for locking the work support in work clamping position.

14:. In a machine of the class described, a work support movable between work receiving and work clamping position. hand operated means for raising the work support into clamping position, means for automatically locking the work support in work clamping position, and means associated with said hand operated means for unlocking the work support upon manipulation of the hand operated means to lower the work support.

15. In a machine of the class described, in combination, a work support movable between work receiving position and work clamping position, hand operated means for raising the work support into clamping position, and means associated with said work support constructed and arranged to lock the work support automatically in clamping position and to unlock the work support upon manipulation of the hand operated means to lower the work support.

16. In a machine of the class described, in combination, a work support movable between work receiving position and work clamping position, a hand lever for raising the work support into work clamping position, a locking device for automatically locking the work support in work clamping position, and means associated with said hand lever and connected to said locking device for rendering said device inoperative to permit lowering of the work support.

17 In a machine of the class described, in combination, a work support movable between an advanced work receiving position and a retracted position, manually operated means for moving the work support between its retracted position and its work clamping position, means for automatically locking the work support against displacement horizontally from its retracted position, means for automatically locking the work support in work clamping position, manual means for releasing the work support from its clamping position, and means for unlocking the work support from its retracted position as the .work support is moved to unclamp the work.

18. In a machine of the class described, in combination, a work support movable be tween an advanced work receiving position and a retracted position, means for raising the work support from said retracted position into work clamping position comprising hand operated means and treadle operated means, means for automatically locking the work support against displacement horizontally from its retracted position, and means for unlocking the work support as it is moved to unclamp the work whereby the work support may be moved into shoe receiving position.

19. In a machine of the class described, in combination, a work support movable between work receiving position and work clamping position, means for raising the Work support into work clamping position, comprising cooperating hand operated means and treadle operated means, and manually controllable means for automatically locking the work support in work clamping position.

:20. In a machine of the class described, in combination, a work support movable between an advanced work receiving position and a retracted position, manually operated means for raising the work support into work clamping position, and automatically operated means for positively locking the work support against displacement horizontally from its retracted position, said locking means being constructed and arranged to unlock the work support as it is moved from work clamping position.

21. In a machine of the class described, in combination, a work support movable between an advanced work receiving position and a retracted position, means for raising the work support from its retracted position raising said work support, treadle operated means for raising said work support, one of said means being constructed and arranged for operation either to supplement the action of the other of said means toraise the work support or to raise the work support to clamping position without any action of theother of said means, and means for holding the work support against downward movement from any point attained in the upward movement thereof.

23. In a machine of the class described, a work support, hand operated means for raising saidwork support, treadle operated means for raising said'work support, said hand operated means being constructed and arranged for operation either to supplement -.the action of the treadlc. operated means to raise the. work support or to raise the work support to clamping position without any action of the treadle operated means.

2%. In a machine of the class described, a work support, an operating member movable relatively thereto for raising the work support into work clamping position, and

: operating means for said member compris- 40 ing hand operated and treadle operated means separately connected to said member. 25. In a machine of the class described, a work support, an operating member movable relatively thereto for raising the work support intowork clamping position, and

operating means for said member comprising hand operated and treadle operated means separately connected to said member and constructed and arranged to permit movement of the work support in the direction to clamp the work to be effected by either of said means. I 26. In a machine of the class described, a work support movable from a work receiv ing to a retracted position, means for lock ing said support in retracted position, and

manually operated means for raising and lowering the work support, said locking means and manually operated means -being constructed andarrangedto cause the unlocking of said support upon the lowering of the work support by said manually operated means.

27. In a machine of the class described, a work support movable from work-receiving to a retracted position, means for locking saidwork, support in retracted position, treadle operated means for raising said work support, and means mounted on the work support for unlocking said work support for movement from a retracted to a work receiving position.

28. In a machine of the class described, a work support, a member movable relatively to said support for'raisin'g said support to work-clamping position, hand manipulated means and treadle manipulated means operactively connected to said membeniandjlocking means associated-with saidhand manipulated means constructed and arranged to permit movement of the-work support toward clamping position to efiected by said treadle manipulated means during operation of the locking means and to locksaid support in the position to which it is moved by either the hand manipulated or treadle manipulated means against move ment in a direction away from work clamping position.

29. In a machine of the class described, a work support, a member movable relatively to said support for raising said support to work clamping position, handmanipulated means and treadle manipulated means independently operatively connected to said member for operating said member, and locking means associated with one ofsaid means constructed and arrangedto lock said support against movement in a direction away from clamping position and to permit movement of saidsupport by said other means in a direction toward clam ping position, and to lock said support in the position to which it may be moved by said other means.

30. In a machine of theclass described, a work support, hand operated and treadle operated means for raising the work support, and locking means for said work support constructed and arranged to lock the same in the position to which it may be moved by either the hand operated means or the trcadle operated means.

In testimonywhereof, I have'signed my name to this specification.

PERLEY It; GLASS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. i

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