US1662251A - Finishing tool - Google Patents

Description

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Patented Mar. 13, 1928.

NUNITED STATES PATENT OFFICE.

FRANK A. E. MARSH, OF LYNN,` MASSACHUSETTS, ASSIGNOR TO UNITE SHOE MA- CHINERY CORPORATION, OF PATTERSON,

JERSEY.

Application filed February This invention relates to finishing tools for use in the manufacture of boots and shoes and more particularly to rotary burnishing tools of the type embodying sectional, Workrubbing members.

Rotary finishing tools of the Xpedite type'y tions.supportedthereby under the influencev of centrifugal force.

The other ends of these springs are rigidly secured to the other end of the carrier. sleeve, which is mounted directly upon a wax is supplied to the periphery of the tool at the rear as the work. is applied to another point of the periphery at the front. The Wax which has been applied by such a tool, usually to the leather heel of a boot or shoe, is pounded into the leather and almost innnediately hardens when the shoe is rcinoved from the tool. ln order to secure the best results, Work which has been waxed by application to such a tool isv usually treated further by applicationto a rotary pad, comprising usually a cloth covered, rather stiff brush, and is given a final polish by means of a softer, uncovered brush. Heretofore, the smoothness of the application of Wax by the finishing tool to the Work has depended very largely upon the skill of thek operator and a poor operator will Waste Wax by applying an excessive amount of Wax so as t-o get an even distribution across the Width of the heel and will run the tool excessively hot so as to make this large quantity of 'wax flow on smoothly. In view of this waste of Wax and since smooth application of the Wax materially reduces the period of application of the Work to the polishing pad, it is an object of the present invention to provide an improved finishing tool, in the use of which just the requisite amount of Wax will be applied smoothly and evenly even when handled byran unskilled` operator.

To this end, in accordance with features of the invention, the illustrated finishing tool is provided with means for adjustably determining the initial tension of resilient supporting means for the Work-rubbing secrotary shaft, and meltedr NEW JERSEY,.A CORPORATION OF NEW' EINISHING Toon.

27, 1926. Serial No. `91,153.

tions and for limiting thein and out movement of the Work-rubbing members and causing said members to approach one another more closely adjacent to their free ends. Such a finishing tool is economicalin its use of Wai: and applies theWaX more evenly and smoothly and with a minimum of noise. A i

Preferably too, andas is illustrated, the tool is constructed and arranged with a plurality of spacing rings `ii'uerposed between the flange of the carrier sleeve above referred to andthe free ends ofthe supporting springs. This gives the springs an initial tension which is adjustably determined by varying the number of spacing rings and provides for adjustably determining the approach of the-outer ends of the worlorubhing sections that they may be caused to toe in to an extent determined by the circumstances of the particularworlr or theV desires of the operator. f

Moreover, i the sectional, Work-rubbing ln'iembers of such tools have commonly been rounded upon their out-er surfaces inorder to lessen the liability of tool marlrsupon t ie Work, and While such kan arrangement is highly satisfactory, still better' results may be obtained by bringing the actual Worlrcontacting surfaces as near together as may conveniently be done Within the limits of mechanical expediency and practical construction.` rlo this end and in accordance with still another feature of the invention, the corners of each of the illustrated sectional, Work-rubbing members are chamfered along their edges next to the adjacent members and the remaining portion ofthe Worlncontacting surface remains as an arc of the pcripheral circle described by the rotating tool.

Still another object-of the invention is to provide a finishing tool by the use. of which Vthe burnishing of leather bases of heels of Utl boots and'shoes to which rubber heel secn tions have been applied will be facilitated.

Accordingly, another feature of the iuvention consists in a novel sectional, burnishing tool in which the periphery is made up of a Worlncontacting surface and a revlieved surface adjacent thereto merging into one another along a gradual curve. `With such a construction the Workcontacting surface applies Wax to the leather heel base while the relieved section overliesithe rubber heel section and, avoids applying Wax to said section. Inasinueh as it is not found desirable to attempt to provide a polished wax tinish on the ruhher heel section, the prevention ot the application of wax thereto during the linishincy ot the leather heel section means a savingot snhsequent expense in the cleaning; ot" the periphery ot the ruhher heel section as well as avoiding a material waste ol wax. Moreover, in machines ot' this type melted wax is supplied to the periphery oi the \vorlcont:u:ting part of the tool in a narrow stripe and is spread over the surface of the tool hy means oiE a reciprocatingr hrush. lVith th) arrangementI ahove descrihed, any wax which is accidentally carried over into the relieved portion ot' the tool may readily he pushed hack on to the work-contacting portion ofthe tool hy the reciproating hrush hecause ot the gradual merger ot said surfaces.

These and other 'features ot the invention will now he setA forth in detail with reference to the accompanying drawings, in which Fig. l is a perspective view ot the end ot a machine to which my novel tool has been applied;

Fig. 2 is a longitudinal section through the tool and the supportingr shait. showing one position assumed hy the work as it is applied to the tool;

Fig. 3 is a transverse section upon the line line HI-IH of Fig. 2 through the ends ot the section-supporting springs and cutting the spacing rings hy means of which said springs are tensioned; and

Fig. t is a perspective view of a single section of the tool with its spring, detached from the carrier.

The illustrated finishing tool comprises a carrier memher 10 in the torni of a` sleeve having an enlarged end 12 to which tlat springs l-.t carryingT sectional, worleruhhing members 1G are firmly secured hy means ol stud screws 18. The outer end ot the sleeve l() is l'ormed to provide an overhangingr flange. Q0, which co-operates with the ends of the springs lit to limit the outward movement ot' the work-ruhliiine memhers ltt under the action of centrifugal force. The tool is mounted at the tree end of a rotary shaft and is held in place thereon by means ot a tapered holt 2t having a` wrench socket 26. iliax is supplied to the tool from a receptacle :728 h v means ot a driven wheel 30 arranged to li tit the wax Jfrom the receptacle and apply it in a stripe to the periphery ot' the wheel over which it is spread hy means of a reciprocahle brush power operated to traverse the whole outer tace of the tool. The `general contour of the tool illustrated is that of the frustuin of a cone. and the machine is preferably provided with a casing having an overhanging flange which surrounds the larger end ot the cone so that any wax thrown ofl' will hev retained within said flange and prevented from flying on the operator. A tread rest 3G adjustahly mounted upon a slide 3o' is positioned, as indicated in Fig. L. to provide a` .support tor the tread surlace ot the heel ot the shoe to he Innnishcd. Since the slide 58 may he moved to a point such that wax may he thrown oll' trom the tool haelt ot the tread rest Jit. a dependiiu.r curtain ttl which is illustrated as secured to the slide 3S is provided for the protection of the operator. handoperated clamp l2 is provided for holding" the slide 23h' iu adjusted position upon the machine.

The illustrated tool is particularly adapted for use upon the leather hase.`- l-l oi" heels to which a ruhher top .section lt has heen applied. Commonly the edge ot the rear end of the sole 48 is treated at the saine time as a continuation oit the surface of the heel hase 44. It' is 'found in practice that the ruhher top sections cannot well he hurnislu-,d and that the wax used for hurnishing the leather portion of the hccl does not stiel: to the ruhher. As a result. it wax accidentally applied to the ruhher top section. it is wasted and moreover must he removed hv application to a rotary pad wheel or h v cleaning in the packingf room. i\c .ordingly, in the construction illustrated. the sections i6 making' up the periphery ot the iron are each provided with a worlecontzuting sur- 'tace 5t) of limited extent and with a relieved surface adjacent to said work-contacting surface and connected thereto hy a gradual curve lf. then. the tread rest Sti is properly adjusted so that the shoe assumes the position indicated in Fien 2. wax will only he applied to the parts fl-l and 4S. which it is desired to linn'nisdn and no wax will he applied to the ruhher top section IG hccause the latter Iiositioned opposite to the` relieved portion 52 of the iron. lt will he understood that the wax-feeding' wheel 'ltl is so positioned that it applies` a stripe oi" wax to the '\\'orl{-contacting surfaces 5() of the various .sections and that the rcciin'ocatin;V hrush ft2 is etl'ective to spread this wax over .said surfaces during rotation of' the tool. lil. as a result of this spreadiiur action. wax is carried over on to the relieved surfaces :72 of the tool the action of the hrush is equally etlective to carrj,Y it hachv ou to the worlcontacting surfaces 50 l'aecausc of thegradual curve -lconnecting the two portions. Although the illustrated iron is designed tor use upon the heels ot mcns shoes ol a particular height, it will he obvious that other irons may he designed for use upon other heights ot heels or upon the heels o t women's shoes without departing from the invention.

Although tools of the Xpedite type. such as that herein illustrated, are remarkahly etleient in applying Wax to the peripherie:

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of heels for the purpose of providing a durable and attractive finish thereon, it has been vfound that'there is considerable variation in the results obtained by different operators according to the skill which they possess andthe care which they use in the operation. `With the poorer operators wax maybe applied in such quantities and in so irregular a fashion that, although it provides just as durable and attractive a liinish in the iinal product, it nevertheless' is not only likely to be wasteful of wax but requires a greater amount of work to be performed subsequentto the operation performed by this particular tool, as by means of a pad or brush, in smoothing up the wax surface and giving it the high lustre which is desired, Accordingly, the illustrated organization is designed to provide greatly improved bui'- nisliing evenwlien an unskilled operator is employed. To this end means are provided for limiting the in and out movement of the free ends of the springs 14 upon which the sections 1G are mounted, which limitation, in the illustrated embodiment, is effected by the insertion of a plurality of flat rings 60 between the overhanging iiange 20 of the carrier sleeve andthe outer kends of the supporting springs. The desired effect may be obtained by using a greater oi less number of rings 60, and in any event it will cause the outer ends of the various sections 16` to toe in or approach each other more closely and will at the same time apply an initial tension to the supporting springs 14. The tensioning of the springs 14 gives them an additional reactive force against pressure applied to the work-rubbing sections 16 and tends to .stii'en them against longitudinal twisting strains so as4 to make the positions of the various sections more rigid. In the illustrated construction, limitation of the in and out movement is secured by the use of rings as described and in addition the various sections 16 are secured to the supporting springs 14 by means of rivets 62 which pass through reinforcing strips 64, and it will be obscrvedf Because of the practical limits of goodv mechanical design there is a substantial space between the various parts ofthe ifarous contacting sections. In order that this the eiect of causing the sections to toe in7 may be even more emphasized, the corners of the meeting edges of the work-contacting portions 5() ofthe various sections have been chainfered or beveled to a limited extent as shown,y much exaggerated, at and 72 along each side of each section. The possibility of tool marks is minimizedl by this construction and the smooth action of the tool is improved because of the lessened space between succeeding members, The intermediate or work-contactingsurfaces 50 preferably are `formed so that a transverse section through the tool cutting these surfaces would intersect the surfaces along the arcs of a circle.

Having described the invention, what l claim as new and desire to secure by Letters Patent of the United Statesis l. A finishing tool comprising a carrier member, sectional work-rubbing members, means for resiliently supporting said mei ibers at a pointfreinote from the point of application of work tothe tool, and adjustable means for limiting the in and out movement of said work-rubbing members arranged to apply an initial tension to the resilient supporting means prior to the application ofivoik to the tool.

2. A` finishing tool comprising a carrier member, sectional work-rubbing y members, flat springs having ends attached to' said `carrier member and supporting the sectional members at their other ends, fixed means upon said carrier members for limiting the in and out movement of the Work-rubbing members, and additional means cooperating with said lixed means adjusta-bly to apply an initiall tension to said springs prior to the application of work to the tool. n 3. A iinishing tool comprising a carrier ineinber, sectional work-rubbing members, springs attached to said cari'ier member at one end and arranged to .support the sectional members at a point remote from the point of attachment of the springs, said springs being normally disposed in positions parallelr to the axis of the tool, and adjustable means constructed and arranged to bend in said springs to place them under an initial tension prior to. the application of work to the tool.

fl. A ,finishing tool comprising a carrier member, `sectional work-rubbing members, normally untensioned resilient members supporting said work-rubbing members, and means for adjusting said resilient supporting members radially constructed and arranged for determining the circumferential spacing of one end of the various work-rubbing members and to apply an initial tension to the resilient members.

5. A finishing tool comprising a carrier member, sectional work-rubbing members,

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flat springs attached to said carrier member at one end and supporting the sectional members at their other ends, a flange upon said carrier member overlying the free ends ot said springs, and a plurality of rings interposed between said flange and the free ends ot said springs constructed and arranged to apply an initial tension to the supporting springs prior to the application of work to the tool.

(i. A finishing tool coniprising a carrier member, sectional work-rubbing members resilicntly supported upon said carrier meluber at a point remote from the point ot application ol` the work` and means adjacent to the point of application of the work coustructed and arranged to restrain the outn uard movement of said members and to cause said members to approach one another more closely at their ends remote from the point of attachment to the carrier member than at their other ends.

T. A finishing tool comprising a carrier member, sectional workrubbing members, and means lor adjustingr said members radially, thereby to determine the circunit'ercntial spacing of one end of the various \vorkrubbing members.

8. A finishing tool comprising a carrier member, sectional work-rubbing members, resilient members supporting said Work-rubing men'ibers, and means for adjusting said resilient supporting members radially, thereby to determine the circumferential spacing ot one end of the various Work-rubbing members.

9. A finishing tool comprising a carrier member, sectional Work-rubbing members, resilient members supporting said work-rubbing members attached to said carrier member at a point remote from the point of application of the Work to the tool, and means for adjusting said resilient supporting members radially, thereby to determine the eircumferential spacing of one end el' the vari ons Work-rublnng members.

10. A finishing tool comprising a rotatable carrier member, sectional work-rubbing members supported upon said carrier member having work-contacting surfaces of limited extent and relieved surfaces adjacent to said worlecontaeting surfaces, said relieved surfaces mergingr into the work-contacting surfaces along` ,gradual curves to facilitate the return of wax from the relieved surfaces to the work-rubbing surfaces.

ll. A linishing'tool for the application ol melted 'ax to the leather base section ot' a shoe to which a rubber topdit't section has been applied comprising sectional worlerubbing members having a generally conical contour, a` 'ax guard arranged to overhang the larger end ol said conical tool thereby to prevent scatteringr of Wax 'f rom .said tool b v centrifugal force, the surface, ot' said tool being divided into a restricted finishing area suitable for the application ot' wax to the heel base section ol said shoe and a relieved area arranged to avoid the application of wax to the rubber heel toplift section, and means for spreading wax over the surface of said tool, said tool being constructed and arranged so that the relieved section of its surface merges gradually into the work-rubbing section of the surface whereby said spreading means is enabled to return to the work-contacting surface of' the tool wax carried over into the relieved section ol the tool.

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

FRANK A. IC. MARSH.

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