US1285740A - Machine for operating upon shoes. - Google Patents

Description

N. H. KNOWLTON.

MACHINE FOR OPERATING UPON SHOES.

APPLICATION FILED APR. 9. 1917.

1 85,740. Patented Nov. 26, 1918.

UNITED STATES PATENT OFFICE.

NORWOOD H. KNOWLTON, OF ROCKPORT, MASSACHUSETTS, A SSIGNOR, BYJEESNE ASSIGNMENTS, T UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A. CORPORATION OF NEW JERSEY. l U

MACHINE FOR OPERATING UPON SHOES.

Specification of Letters Patent.

Patented Nov. 26, 1918.

Application filed April 9, 1917. Serial No. 160,709. H

To all whom it may concern:

Be it known that I, Nonwoon H. Known- TON, a citizen of the United States, reslding at Rockport, in the county of Essex and State of Massachusetts, have invented certain Improvements in Machines for Operat ing upon Shoes, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indieatlng like parts in the several figures.

This invention relates to machmes for opcrating upon shoes in the course of shoe which operates upon the shoe. Where the tool, as usual in machines of such types, is mounted for reciprocatory movement, it has been proposed to mount the heating member in bearings adjacent to the tool and to hold it yieldingly in position to heat the tool. A difiiculty encountered, however, in the use of such constructions arises from the fact that thefine wires in the heating units are frequently broken, particularly adjacent to the terminals, such breakage resulting from vibration of the heating unit during the op- .eration of the machine. An opportunity for such vibration is afforded by the slight play which is practically inevitable in the bearings by which the heating units, or their holders, are supported in operative position.

For the purpose, among others, of avoiding the above mentioned diflieulty, an important feature of this invention consists in novel means of support for a heating member so constructed as to eliminate bearings and the consequent danger of excessive vibration. The invention, in the illustrated embodiment, provides ,a support for theheating member which is rigid against movement in those directions in which there is a tendency for vibration of the member, and re- Silient-c'. e., elastic in its structure-in transverse relation to the path of movement of the tool to insure efi'ective cooperation of the heating member with the tool. In the construction shown the heating member is secured to a resilient metal plate which is mountedin substantially arallel relation to the path of movement of the tool to cause the plate to press the member against a lateral surface of the tool. A very important advantage of such, a construction and arrangement, aside from the elimination of bearmgs, arises from the fact that, while the support is ylelding in directions transverse.

to the path of movement of the tool, it is otherwise absolutely rigid and consequently obviates any vibrations in the heating member in directions substantially or approximately parallel to its path of movement. Since there is comparatively little tendency, in any case, for the tool to set up vibrations in directions transverse to its path of movement, the adfvantage of this construction in machines where electrical heating units are used will be readily understood. It will also be evident that the construction presents advan tages, arising particularly from its simplicity and durability, irrespective of the particular character of the heating means employed.

tendency for the tool to set up A further feature of the invention con sists in a novel construction and arrangement comprising a tool with heating means therefor and means for varying the eflect of the heating means upon the tool. As applied to a construction having means for varying the extent of the movement of a reciprocatory tool, the invention in its illustrative embodiment provides means for correspondinglychanging the relation of the heating member'to the tool, as by throwing the member out of engagement with the tool. As viewed in this aspect, the invention has for an object to economize heat, avoid undue Wear of the parts, and where an electrical heating unit is used to insure further against 7 excessive vibration. The construction shown having portions provided for beatin respectively the uppers and thesoles of s oes, together with electrical heating means for engaging the upiper beating portion of the tool and means the movement of the totfl for beating the sole, and as applied to such a construct on the invention provides means for throwing the heating member out of engagement w th the tool when the tool is to operate with the longer stroke. In constructionswhere the eiztent of the movement of a tool is thus increased without the necessity for heating the tool when operating with the longer stroke, the advantage of' disengaging the heating member from the tool Will be appar ent, particularly as tending to avoid loss of heat and undue wear of the arts through friction, and also, where an e ectrical heating unit is used, as eliminating danger. of

excessive vibration of the unit in conseuence of any tendency which there may be for the tool to play laterally by reason of its increased movement and the more severe work which it is required to perform with the longer stroke.

lhe above and other features of the invention will now be more particularly described with reference to the accompanying drawings and pointed out in the claims. The invention is herein shown as embodied in a machine having shoe beating means such as shown and described in prior United States Letters Patent No. 1,175,215, granted on March 14, 1916, upon an application of Orrell Ashton, but it will be evident from the following description that the invention in its broader aspects is not thus limited in its applicability.

In the drawings,

Figure 1 is a view in side elevation of a portion of the machine shown in said patent,

vention is embodied;

Fig. 2 is a perspective view of a portion of the structure shown in Fig. 1, asviewed from the opposite side; and

Fig. 3 shows in perspective a portion of the structure as viewed from the same side as Fig.1, with parts in section to illustrate the interior construction.

The illustrative construction comprises a shoe beating or blockin tool pivoted at 2 on the frame of the mac ine and having an 1 outer portion 4 shaped for blocking the lateral surface of an inverted shoe in and adjacent to the crease between the upper and the sole and an intermediate portion 6 constructed to beat and shape the sole of a shoe in the shank. The tool is normally held in its foremost position by means of a spring plunger 8 in engagement with its rear face, in which position a rearwardly extending or increasing the extent of assavao arm 10 of the tool engages a spring bufier 12. The tool is thus normally stationary, and in operation is moved by the pressure of a shoe against either of the portions 4 or 6 into osition to cause the arm 10 to be engage by a cam 14 on a rapidly rotating shaft 16, whereby the tool receives rapid impulses in the direction of the shoe for beating and shaping the shoe. When the outer member 4 is in use to block the side of the shoe it is desirable that the tool receive oscillations of much smaller amplitude than when the portion 6 is in. use for the heavier work of shaping the sole. Accordingly the machine is provided with a pivoted stop 18 having a shoulder 20 for engaging the rear face of the tool to limit its rearward movement when blocking the upper of the shoe. When it is desired to use the portion 6 for beating the shank, the stop 18 is turned into the posltion in which it is shown in Fig. 1, thus removing the shoulder 20 from its limiting position and permitting the tool to be moved farther backwardly and thus to receive wider oscillations by the action of thecam 14. The stop 18 is held yieldingly 1n either of its positions of adjustment by means of a spring held detent 22 which is arranged to engage in one or the other of a pair of notches in the stop member corresponding respectively to the difierent positions of the stop.

In carryin out the objects of this invention the mac ine is provided with a plate to the upper end of the plate 24 is a block- 26 supporting at its upper end a bracket 28 to which is secured a heating member 30. The member 30 comprises a rectangular metal block in which is mounted an electrical heating unit 32 which receives its current through electrical'conductors 34 supported in a block 36 of insulating material mounted on the member 26, the conductors 34 extending to a source of supply through a conduit 38. In order to conserve the heat of the member 30, this member is separated from its support 28 by means of a layer 40 of asbestos or similar material which serves as a relatively poor conductor of heat.

The heating member 30, on the side toward the'blocking tool, is formed with a smooth face parallel to the plane of'oscillationof the tool, and this face is arranged to be engaged by a plane contact face on a wing 42 of the portion 4 of the tool which extends rearwardly from the tool and is preferably integral with the portion 4 as shown. When the portion 4 of the tool is in use for ,be'ating'the upper of the shoe it is preferable that this portion be heated constantly at a uniform temperature .in order to insure a more effective action upon the leather. The spring plate 24 is therefore arranged to press the heating member constantly against the rearwardly extending wing 42 to cause heat to be imparted to the tool continuously by conduction during the operation of the tool as well as at the time when the tool is at rest.

The portion 6 of the tool does not require to be heated for beating and shapin the shank of the sole, and it has been foun that if the heating member 30 remains in contact with the wing 42 during the wider oscillations of the tool when the portion 6 is in use, excessive vibrations in the member 30 and its resilient support may be set up through tendency for the tool to play laterally during the more severe work of beat ing the sole, thereby tending to destroy the electrical heating unit. In order to eliminate danger of destroying the heating unit, as Well as to avoid unnecessary wear upon the contacting faces of the members 30 and 42 and also unnecessary loss of heat, the machine is rovided with means forthrowing the memfier 30 out of contact with the wing 42 when the wider oscillations are to be imparted to the tool. To this end a cam 44 is secured to the side of the spring plate 24 adjacent to the stop 18 and in position to be engaged by the stop when the latter is turned into position to remove the shoulder 20 from behind the tool, thus causing the stop to force the heating member 30 out of contact with the wing 42 by bending the plate 24. When the stop is turned into position to cause the shoulder 20 to limit the movement of the tool, the stop is removed from the cam member 44 and thus permits the heating member to be pressed against the wing 42 by the action of the spring plate.

The operation of the mechanism wherein this invention is embodied, as applied to shoe beating means of the illustrative type, will be readily understood from the preceding description. It will be evident that the stop 18, in cooperation with the cam '44,

provides means which may be readily manipulated to control the relation of the heating means to the tool without loss of the operators time, such relation being changed automatically b the means employed for varying the limit of movement of the tool. It will be apparent, moreover that the stop 18 may also be used at any time, if desired, to hold the heating member out of contact with the tool when the machine is at rest, in order to conserve the heat. I

While the invention is herein shown in its application to a machine for performing shoe beating operations, it will be readily electrical heating unit, and a understood that the invention in many of its aspects is not restricted in utility by the character of the operation which the heated tool may be adapted to perform.

Having described the 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 tool for operating upon a shoe, means for imparting operative movement to said tool, a heating device, and a resilient supporting member upon which said device is mounted, said supporting member being constructed and arranged to maintain said device in yielding engagement'with the tool while restraining the device from movement with the tool.

2. In a machine of, the class described, a reciprocatory tool, means for operating said tool, a heating device, and a resilient supporting member to which said device is secured, said supporting member being rigid against movement in parallel relation to the path'of movementof the tool and arranged to maintain said device in yielding engagement with the tool.

3. In a machine of the class described, a reciprocatory tool, means for operating said tool, a heating member, and a resilient plate upon which said member is mounted, said plate being arranged in such relation to the path of movement of the tool as to maintain said member in yielding engagement with a lateral surface of the t 01 While holding the member against movement with the-tool.

4. In a machine of the class described, a reciprocatory tool, means for operating said toolfheating means for the tool including an support for maintaining said heating means in frictional engagement with the tool, the heating means being rigidly secured to said support and the support being rigid against movement in directions substantially parallel to the path of movement of the tool and resilient in transverse relation to said path of movement. v v 5. In a machine of the class described, a reciprocatory tool, means for operating said tool, heating means including an electrical heating unit, and means for supporting said heating means in engagement with a lateral surface of the tool while restraining it from movement with the tool, said supporting means comprising a resilient plate to which the heating means is secured.

6. In a machine of the class-described, a reciprocatory tool, means for operating said tool, heating means including an electrical heating unit, and means for supporting said heating means in yielding engagement with the tool comprisinga resilient plate to which the heating means 15 secured, said plate being mounted in substantially parallel rela tion to the path of movement ofthe tool to cause it to hold the heating means rigidly against vibration in directlons arallel to the path of movement of the too 7. In a machine of the class described, a shoe beating tool, means for reciprocating said tool, the tool having a rearward extension presenting a lateral surface in substantially parallel relation to the path of movement of the tool, a heating device, and a resilient supporting member to which said device is secured, said member being arranged to maintain the heating. device in yielding engagement with said lateral surface while restraining it from movement with the tool.

8. In a machine of the class described a tool for operating upon a shoe, means or reciprocating said tool, means for heating the tool, means for varying the limit of movement of the tool, and means for simultaneously varying the relation of the heating means to the tool.

9. In a machine of the class described, a tool for operating upon a shoe, means for reciprocating said tool, means for varying the extent of the movement of the tool, av

heating member, means for holding said member normally in position to heat the tool, and means for moving said member out of heating position when the extent of the movement of the tool is to be increased. I

'10. In a machine of the class described, a reciprocatory tool, means for varying the extent of the movement of the 'tool, a heating member positioned adjacent to the path of movement of the tool for engagement with the tool, an electrical heating unit carried by said member, and means for moving said member out of engagement with the tool when the extent of the movement of the tool is to be increased.

11. In a machine of the class described, a tool for operating upon a shoe, means for reciprocating said tool, controlling means for varying the limit of movement of the tool, means for heating the tool, and means operated by said controlling means for varying the relation of the heating means to the tool.

12. In a machine of the class described, a

'tool for operating upon a shoe, means for reciprocating said tool, controlling means for varying the extent of the movement of the tool, a heating member, means for normally maintaining said heating member in frictional engagement with the tool, and means for causing said controlling means to force the heating member out of engagement with the tool when the extent of the movement of the tool is to be increased.

13. In a machine of the class described, a

aeareo reciprocatory tool, nieans for operating said tool, heating means comprising an electrical heating unit, said heating means being arranged for frictional engagement with the tool, and means'for adjusting said heating means to cause it to be positioned out of engagement with the tool.

In a machine of the class described, a reciprocatory tool, means for operating said tool, heating means for the tool including an electrical heating unit, a resilient support for said heating means arranged to position said means for engagement with the tool while restraining it from movement with the tool, means for varying the extent of movement of the tool, and means for bending 'said support to position the heating means out of engagement with the tool when the extent of movement of the tool is to be increased.

15. In a machine of the class described, a tool for operating upon a shoe, means for reciprocating said tool, a heating member, a resi lient support for holding said member yieldingly in engagement with the tool, and cam means for operating upon said support to force the heating member out of position to engage the tool.

16. In a machine of the class described, a tool for operating upon a shoe, means for operatmg said tool, a heating. member, a resilient plate upon which said member is m unted, said plate being arranged to maintaln the heating member yieldingly in engagement with the tool, and means for bendmg said plate to force the member out of position to engage the tool.

17 In a machine of the class described, a tool for operating upon a shoe, 'meansfor reciprocating said tool, a heating member,

the tool, and means operated by said move.

ment of the stop for moving the" heating member out of position to heatthe tool.

18. In a machine of the class described, a tool for operating upon "a shoe, means for rec procating said tool, a heating member, a resilient support for said member arranged to maintain the member normally in engagement with the tool, a stop for limiting the extent of the movement of the tool, said stop being movable into position to permit an increased movement of the tool, and means for causing thestop to bend said resilient support to force the heating member out of engagement with thetool. I

19. In a machine of the class described, a tool for operating upon a shoe, means for reciprocating said tool, a heating member, a

resilient plate for supporting said member in engagement with the tool, a cam on said plate, and a pivoted controlling member arranged to engage said cam to force the heating member out of engagement With the tool.

20. In a machine of the class described, a shoe beating tool having difierent portions for beating respectively the uppers and the soles of shoes, means for reciprocating said tool, heating means arranged to engage the upper beating portion of the tool, and means for positioning the heating means out of engagement with the tool when the tool is to be used for sole beating.

21. In a machine of the class described, a shoe beating tool having different portions for beating respectively the uppers and the soles of shoes, means for reciprocating said tool, electrical heating means arranged to engage the upper beating portion of the.

' tool, a controlling member movable into position to permit a longer stroke of the tool for sole beating, and means for causing said controlling member to position the heating means out of engagement with the tool.

22. In a machine of the class described, a

shoe beating tool having different portions for beating respectively the uppers andt-he soles of shoes, means for reciprocating said tool, electrical heating means, a resilient plate to which said heating means is secured, said plate being arranged in substantially parallel relation to the path of movement of the tool to press the heating means laterally against the upper beating portion of the tool, a stop for the tool movable into position to permit a longer stroke of the tool for sole beating, and means for forcing the heating means out of contact with the tool.

by said movement of the stop.

23. In a machine of the class described, the combination with a movable tool and means for imparting operative movement to said tool, of a device for heating the tool, and a support for said heating device comprising a resilient plate to which the device is secured, said plate being mounted in such relation to the tool as to press the heating device yieldingly toward a lateral surface of the tool while holding it rigidly against movement with the tool.

24. In a machine of the class described, the combination with a reciprocatory tool and means for operating said tool, of a device for imparting heat to the tool through surface contact, and a support for said heating device comprising a resilient plate to which the device is secured, said plate being arranged to press the heating device yieldingly against the tool and extending widthwise in substantially parallel relation to the directions of movement of the tool.

In a machine of the class described, the combination with a reciprocatory tool and means for operating said tool, of a device comprising an electrical heating unit for imparting heat to the tool through surface contact, and a support for said heating device comprising a resilient plate 0 which said heating unit is rigidly secured, said plate being mounted in such relation to the tool as to hold the heating device rigidly against vibration with the tool while maintaining it yieldingly in contact with the tool.

26. In a machine of the class described, the combination with a tool mounted for oscillatory movement and means for operating said tool, of a resilient plate mounted adjacent to the tool and rigidly supported at one end, a heating block secured to the other end of said plate, said block and the plate be- -ing arranged in such relation to the tool as to cause the block to be held yieldingly against a lateral surface of the tool by the tension of the plate, and an electrical heating unit mounted in said block.

27 In a machine of the class described, the combination with-a reciprocatory tool, means for operating said tool, and means for varying the extent of the operative movement of the tool, of a device for imparting heat to the tool, said device being movable either into or out of position to heat the tool.

28. Ina machine of the class described, the combination with a reciprocatory tool and means for operating said tool, of controlling means for varying the extent of the movement of the tool, means for heating the tool, and means arranged to be operated b said controlling means for rendering the heating means either eflective or ineffective to heat the tool.

29. In a machine of the class described, a shoe beating tool having different portions for beating respectively diflerent parts of shoes, means for reciprocating said tool, means for heating one of said portions of the tool, controlling means for varying the extent of the movement of the tool, and means arranged to be operated by said controlling means for rendering the heating means ineffective to heat the tool when the unheated portion of the tool is to be used.

30. In a machine of the class described, a shoe beating tool having different portions for beating respectively the uppers and the soles of shoes, means for reciprocating said tool, means for heating the upper beating portion of the tool, controlling means for increasing the extent of the movement of the tool for sole beating, and means arranged to be operated by said controlling means for rendering the heating means ineffective to heat the tool when the tool is to be used for sole beating.

31. In a machine of the class described, a shoe heating tool constructed to heat either the uppers or the soles of shoes, means for reciprocating said. tool, means for imparting heat to the tool through surface contact, controlling means for varying the extent of the movement of the tool, and means arranged to be operated by said controlling means for interrupting the contact between said, heat- .10 ing means and the tool.

eeann 32. In a machine o1 the oiassdesoribech the combination with a reciprocatory tool and means for operating said tool of means for heating the tool, anoi means for simultaneousiy varying the extent of the movement of the tool and the efiect of the heating means upon the tool.

In testimony whereof I have signed my name to this specification.

NQRWQOD H. KNOJVLTON.

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