US1746519A - Shoe-finishing machine - Google Patents

Description

Feb. 11, 1930. A. w. BRICE: ET AL 1,746,519

sHoE F'INISHING MACHINE Original Filed Nov. 5. 1922 s sheets-sheet L;

//MWW Feb. 11, 1930. A, w, BRCE ETAL 1,746,519

SHOE FINISHING MACHlNE Original Filed Nov. 3, 1922 3 Sheets-Sheet 2 Feb. 11, 1930.

` A. w. BRICE ET AL SHOE FlNISHING MACHINE Original Filed Nov. 3, 1922 5 Sheets-Sheet 5 /A/VE/VTUHS MM M Mm g a Patented Feb. 11, 1930 UNITED STATES PATENToFF-ICE j ARTHUR W. BRICE,` on ROCHESTER,` AND WTLLTATJT HAMANN, oF ITRONDEQOIT, NEW YORK, AssTGNoRs To UNITED SHOE MACHINERY CORPORATION, on PATERsoN, NEW JERSEY, A CORPORATION on NEW JERSEY u isiroETINIsnTive` MACHINE Application led November 3, 1922, Serial No. 598,837. Renewed December 1928.

This invention relates to shoe-finishing machines and is herein illustrated as em bodied in a `machine for burnishi-ng or setting theedgesof shoe soles. y i

Various shoe-finishing machines are provided With several tools which` are brought into use alternately, as by mounting the tools on a holder which maybe moved to bring one afterianother of the tools into operative position.` AneXample of this is found in edge setting machines 1n which commonly an Oscillating tool holder is provided havfeo i tool holders, `Which are frequently not balingiforepart and shank tools which can be alternately broughtinto Working position. Some of these machines, to effect the exchange of tools, require the operator tolet go of the y shoe With onehand in order to unlock thetool holder and turn it manually to .the desired position. `This slows down the Work consid erably since thetools are usually changed once for every` shoe. Other machines,al though they do not requirethe operator. to let go of the shoe, nevertheless require him to change position `or balance in order to push with knee or hand against a lever Which, through more or less complicated mechanism, effects the interchange of the tools. This change ofposition or of balance andthe ef fort required constitute a serious hindrance to rapid Work. Moreover, edge setting machines are runat veryrhigh speeds and the anced With respect to their axes ofoscillation, areliable to producey so much vibration that e the Working stroke of the tool is affected.

This furnishes an added distraction to the operator both on account ofthe diiliculty of holdingqthe Work and on` account of the noise produced. The quality of Work is not as "good and the Wear Of the machine is increased.

One of theobjectsof the invention is to Y provide an improved machine of the type referred toLvvhich will be organized to operate with a minimum of vibration and allon7 the interchange Of the tools quickly and easily, thus obviating or minimizing the above noted and other disadvantages ofprior`constructions. In the illustrated machine, in accordance with a feature of the invention, a balanced or symmetrical tool holder `is turned to change the toolsby means,A including a one-Way clutch, utilizing the power of the machine 'itself when such action is permitted by the operator under control of aneasily actuated latch.` This means" is organized automatically to energize a spring` by oscillations of the shaft in one direction and When the spring is Woundup, the clutch is rendered temporarily ineiiiectiveuntil the stored up energy hasbeenutilized to rotate thetool `holder. TO effect actuation ofthe ,latch with the least disturbance tothe operator, the i1+ lustrated latch extends to a point infront of the `operator and., at the center of oscillation ofthe tool holder, a lightftap ofthe `shoe or the hand against the latchbeing "all" that is needed to effect interchange Ofj the tools. Preferably too, as illustrated andin accordance Witha further feature of the invention, the tool holder is swivelled on itjs axis of oscillation and the tools are oppositely mounted `in balancedrlrelation tothis aXis to reduce vibration and noise. In the illustrated construction, the tools are each mounted at an inclination to the tool holder and thus With their longitudinal axesata small angle to said holder,A This brings the' end of the lovvermost tool, Which is inoperative position, forivarclwtoward the, operator so that a shoe 'held inthe operators hands may be held up against the tool conveniently and travel of the tool to `heat the same by radiaf tion, there being preferably a leverl toimove the unit along the slidetovary theamount of heat transmitted.` 'Preferably both .tools are continuously heated, a shield enclosingqthe tool not in use and its heating unit to retain the heat and protect the operator.

Such a location of the heating unit closely adjacent to the operating tool introduces, however,the additional danger vthat the operator may 'accidentally injure his hand or the Work itself by contact with the .heating unit. In order to minimize the danger, we provide, according to the preferred embodiment of the invention, a floating support for the heating means, which preferably takes the form of a swivel mounting combined with a spring-pressed restraining member which is arranged zto hold thehea-ting means ieldingly in normal position so that acciloont-act will ush'the latter aside. By thus avoiding "too m a contact between the work, for example, and the heating means, a minimum of resultant Vdamage will be The above and other `features and advan- Y of the invention 'will appear -from a consideration of the lfollowing specification and accompanying 'drawings in which,

Fi .1 is al'longitudinal, sectional view of a machine embodying theinvention in a. prelferret! 'for-@Showing one of the tool holders in siideele'vation, the other tool holder being emitted; Y

"Fig2 is a topplan view of the tool holder with the enclosing casing omitted and with parte broken away; l

Fig. 8 is a front elevation of the tool holder;

4"is a'vertical,-transverse vsection of a ion of the opel ating mechanism `for the tool-shaft;

Fig. l`5 is an'exploded view of certain details;

Fig. 6 is a verticahlong'itudinal section of the tool holder and associated partis.;

Fig. 7 is a horizontal section of a portion of 'the Asame mechanism;

Fig. 8 isa vertical section'onfthe line 8-8 ci Fig. 6';

Fig, 9-is a. vertical section on--the line 9-9 Fig. 10 is a view Ysimilar to Fig. 9 with sume of 1libe-parts -inL diiferent positions;

ber or character of the tools. llVithin a hollow 'frame or casing 12 vis a rock shaft 14 tofwldh issecured a` rocker lever16 pivotal'ly connected at its end toa wrist pin 1:8 on the end cfa connecting lrod 20. The yrod20 has a strap portion surrounding an eccentric 22 enarotal'ydriven'shaft 24 having horizontal bearings in pillow blocks 26 projecting upwardly from the frame. The shaft 24.has a sprocket Wheel 28 driven by a chain 30 from a sprocket wheel 32 on the end of the shaft of an electric motor 34 mounted on an adjustable shelf 36 on the framecover. A casing ,38 projecting upwardly from the frame cover guiding the work. The rock shaft 14 is carried in bushings 46 and 48 fixed in the frame, a collar 50 pinned to the shaft preventing movement in one direction, whereas a collar 52 (Fig. 6) threaded on the shaft at the other end of the bushing 46 prevents movement in the other direction.

Each double tool holder 54 is swivelled on a bushing at one end of the rock shaft 14 and ycomprises a pair of oppositely extending hollow arms in which are mounted hollow plungers 56 having keyways 58 for iiat plates 60 which are attached to the tool holder and prevent the plungers from rotating. The tool holder construction is, therefore, Isubstantially symmetrical with respect to the axis of the rock shaft, thereby reducing vibration to a minimum. Springs 62 interposed between the hub of the tool holder and the plungers hold the plungers normally in an outward position and allow the tools to yield under pressure of the work. Projecting forwardly at a small angle to the plungers are studs 64 on which forepart and shank edge setting tools 66l and 68, respectively, are mounted, being retained by spring clips of usual form. The resulting inclination of the studs 64 brings the working faces of the tools to such a working posit-ion that shoes may be easily presented thereto. To get the same result with a tool holder in which the tools are mounted at right angles to the axes of oscillation would require an inclined rock shaft. It will be noted also that inasmuch as the tools are oppositely disposed at similar inclinations, the balance of the tool holder is unaffected by this relationship.

Each tool holder can be locked to the shaft to oscillate with it and can be released for rotation to interchange the forepart and shank tools. This interchange of tools is veffected through means including a one-way clutch by power supplied by the machine itself when the tool holder locking means, to be described, is unlocked. Fixed to rock shaft 14 by means of the plate 7 0 (Fig. 2) is a cu-p-shaped member 72 having at its front edge a circular flange 74 with opposite notches 76, 76 (Figs. 2 and 7) for cooperation Awith a latch on the tool holder. As shown best at 78 in Fig. l'the fiange 74 is inclined somewhat toward the leading edge of the notch in order that the latch may be guided into the notch and be positively stopped without overrunning. Projecting` from the tool holder is a pair of ears 80 (Figs. 1, 2 and3) joined by a pivot pin 82 for a latch 84, the handle end of which extends to the front of the tool holder at the axis of rotation and oscillation, the other end 86 (Fig. 1) of the latch beingbeveled for engagement with the notches 76. To reduce friction between the tool holder locking latch 84 and the flange 74 when the tool holder is rotating, a roll 88 `(Fi 2) is pivotally mounted on the latch. A spring 90 is inserted in a hollow pin 91 abutting against the tool holder and slidable loosely in an openingof the latch, the spring abutting against a lug on the latch and .being normally effective to press the end 86 of the latch into one of the notches. Y When the latch 84 is released, the tool holder is rotated to interchange the tools by a spring 92 (Figs. 6 and 7) in which energy has been stored up through theone-way clutch by oscillation of the shaft 14. Whatever the condition of the spring as to tension, the spring will always resist counterclockwise rotation of the tool holder when the latch is released. This spring 92 (Fig. 7) is connected at one end to a pin 94 (Figs. 7 and 9) projecting f another part of said clutch is pivoted at 102 inwardly from the tool holder, and the other end of the spring is secured at 96 (Fig. 9)

. in arecess of a ratchet wheel 98 constituting part of theone-way clutch, the hub of said ratchet being swivelled on a bushing on the rock shaft. An advancing pawl 100 forming (see also Fig. 7) in a recess of the cup-shaped member 72 and is normally pressed by a spring 104 against the teeth of the ratchet wheel. This pawl intermittently engages the j ratchet teeth for brief intervals in order to rotate the ratchet and energize the spring,

and it is rendered ineffective, by mechanism to be described, when sufficient energy has been stored up in the spring 92. A retaining pawl 106 is mounted on an eccentric stud 108 projecting from the frame of the machine, a spring 110 tending to hold the pawl always in engagement with the ratchet. The eccentric mounting provides means for varying the `position of the pawl so that it will properly engage the teeth.

The ratchet wheel 98 has a smooth bearing sleeve or flange 114 (Fig. 5, bottom) extending inwardly to receive mechanism forrenj dering the advancing pawl ineffective including a swinging carrier 116 (Fig. o, top) provided with opposite pairs of guide flanges `and 120 at the front of the carrier and the two plates arenormally impelled outwardly as far as the slots permit by a spring 130 oining the arm 126 on the slide plate 122 with 122 has a cam 134`which is offset (Fig. 6) to lie in the same plane with the other cani. Stop lugs 140 and 142 projecting from the rear side (Fig. 15) of the ratchet wheel limit the movement of the cani 132, and similar stop lugs 144 and 146 limit the movement of the cam 134. The swinging carrier 116 with the two slide plates is normally hept at one limit of swinging movement by a spring 136 (Fig. 8) connected to the carrier and to the ratchet wheel. The slide plates and the carrier are held in assembled position by the ratchet wheel and by a washer 148 (Figs. 6 and 7) abutting against the hub of the cup-sha`ped member 72.

The cams are employed alternately and successively for the purpose of raising the ad vancing pawl from the teeth of the ratchet when the spring 92 is wound up'. ln the position shown in Fig. 9 the ratchet wheel is just beginning to advance under control of the pawl 100 and the oscillating shaft 14 with which the pawl is connected. As the cam 132 moves around, it contacts vwith a roll 150 (Figxf 7) mounted on the pivot 102 of the advancing pawl. This contact temporarily arrests the movement of the cam 132 and the swinging carrier 116, the ratchet continuing to advance and the spring 136 stretching until the lug 142 reaches the cam 132. Thereafter the spring 130 to engage a small rollV on the pivot 152 (Fig. 10) at the end ofthe advancing pawl 100 which is thereby raised suddenly and forcefully from the-teeth of the ratchet wheel. vThis action `prevents any further rotation of theratchet wheel or further wind no Y posite portions of the periphery of the ratchet wheel have the teeth `'interrupted for a short distance, thus insuring. the stopping of the ratchet wheel after one half a revolution if for any reason the pawl tripping mechanism fails to operate. The `ratchet wheel carries two opposite outwardly projecting stop pins 154 and 156 which lie in the same circle as the pin 94 projecting inwardly from the tool holder. After thelparts have reached the position shown in Fig. 10, where the advancing pawl is shown out of engagement with the ratchetwheel, the latch 84 on the tool holder may be released to interchange the tools. Thereupon, the tool holder, with the pin 94 which projects inwardly from it, is caused to rotate clockwise (as viewed in Fig. 9) by the spring 92 until the pin 94 engages the stop pin 154 on the ratchet, or the unwound spring pulls along the ratchet wheel forward slightly to carry the cam 132 ahead and clear of the advancing pawl 100, which is thereby allowed to return again into enga gement with the ratchet teeth to wind up the spring again in preparation for a subsequent interchange of tools. On the next interchange of tools, the correspondii'ig cam 134 and associated parts operate in a similar manner.

Mechanism is thus provided for securing a quick and easy interchange of the tools, in which the tool holder 54 is rotatably mounted upon a power-operated rock shaft 14 and is adapted, when released therefrom by depression of a manually operated latch.84 (Fig. 1), to be rotated through 18() degrees by the power oi the shaft stored up in a spring 92, one end of `which is secured to the tool holder at 94, and the other end oi which is secured to the ratchet wheel 98 at the oint 96. This ratchet wheel 98, which is eld against reverse rotation by means of a retaining 'pawl 106 secured to the frame of the machine, is forwardly rotated intermittently, using the power of the machine itself, by means of the advancing pawl 1GO, which is secured to the lrock shait 14 by being mounted on the cup 72. The oscillations of the rock shaft cause the advancing pawl to move the ratchet wheel 98 along step by step until sufficient ener y has been stored up in the spring 92 to egect a partial rotation oi the tool carrier to interchange the tools. Inasmuch as the period of time required for this Winding up of the spring will probably never exactly coincide with the period between the interchange of tools, mechanism has been provided, as above described, for rendering the advancing pawl 100 ineffective after the spring has been wound up until such a time as the tool holder has been given a partial rotation. This mechanism comprises a carrier 116, associated with which are two cam plates 122 and 124. These cam plates are normally spring pressed outwardly by a spring 130, and their cam- projections 132 and 134 lie between projections on the ratchet Wheel, being held against the projections and V146, as shown in Fig. 8, by a spring 136, As the ratchet wheel is advanced step by step, the cam projection 132, for example, will be brought into contact with the roller occupyinga fixed position in the machine. This engagement will temporarily retard forward movement of the cams and their-carrier until the abutment 142 on the ratchet wheel contacts with the back face of the cam projection 132 and forces it past the roller 150. When this happens, the cam 132 will be depressed inwardly against the tension of the spring 130, and as it passes beyond the roller 150, the cam plate will be forced outwardly suddenly Vand forcefully to raise the advancing pawl 100 :from engagement with the teeth of the ratchet wheel. As the machine is operated, the arrangement thus 'far described will store up energy in the spring 92, so that when the retaining latch 84 is depressed by the operator, the tool holder will be carried around to bring the next tool into operative position. As the tool holder flies around, the unwound spring 92 will tend to drag-along the ratchet wheel and the cams to bring the cam 132 out of contact with the roller 150 on the advancing pawl 100, thus allowing this pawl to return into engagement with the ratchet wheel, so that energy may be again stored up in the spring for the next interchange otl tools. If the cam projection has not been moved in this fashion, then the pin 94 (Fig. 7) projecting inwardly from the back side of the tool holder will engage an outwardly projecting pin 84 on the ratchet wheel and carry the ratchet wheel about the shaft to push the cam projection 132 past the advancing pawl 160. There is thus provided a self-contained mechanism associated with the 'tool holder, which rotates about the axis of oscillation, in which the tool holder is rotated by the power of the machine itself, the mechanism operating to transform the oscillating movements of the shaft 14 to rotary movement of the tool carrier 54.

At each end of the main casing 12 is secured an auxiliary casing (Figs. 1 and 6) with upper and lower flat guide faces 162 (Fig. 9) for slides 166 (Fig. 6) guided and held in place by cover plates 164. The slides 166 are bent outwardly at their' forward ends which are attached to brackets 168 carrying electric heating units 170. The heating units lie parallel to the edge setting irons and out of contact therewith to heat them by radiation. To Vary the degree of heat, the units can be moved toward or from the edge irons by levers 17 4 pivoted at 172 on the auxiliary casing and having their middle por* tions loosely embracing pivot studs 176 (Fig. 6) projecting from the slides 166. To hold the slides rictionally in any position, springs 178 are interposed between the levers and nuts on the ends of the pivot studs 176. A shield 180 (Fig. 6), open at the sides to allow rotation of the tool holder, extends over the end of that one of the edge setting irons and itsl heating unit which is in the upper or inoperative position. The shield not only protects the operator from accidental Contact with that iron or its heating unit but likewise retains the heat in that iron which for the moment is not in use.

In Figs. 11 and 12 is shown a floating mounting for the heating unit for the lower iron which is designed to prevent marring the work ii' the latter should come in Contact with said heating unit or its supporting bracket. In a guideway 182 is mounted for sliding movement a slide block 184 having a horizontalbearing opening for the reception of a rock rod 186 havinga flattened portion 188 and carrying a bracket 168 and a unit 170 as does thel slide 166.` A spring-pressed plunger 190 has a flattened face engaging the flattened part of the shaft and, withina hollow extension 192 of the slide block 184, is mounted a spring 194V bearing at one end against the plunger and at the other end against a threaded cup 196 locked in the eX- tension 192 by means of a lock nut 198. The slide 184 and heating unit 170 may be moved toward and from the tool in the manner described above, Q indicating the actuating lever and 202 the pivot stud. If the work or the operators hand should accidently contact with the bracket 168 supporting the heating unit or the unititself, the latter is per- `mitted by the above described floating mounting to swing to one side to minimize the danger of injury to either and is afterward re- 66 and 68 shapedtofit the particular style of work to be finished. When he has completed the finishingof that part of a sole for which the proper tool is in operative position, for ,example the forepart, he will give the latch 84 a light tap and power supplied by the machine itself will effect an interchange of the tools to bring the shank finishing tool into position so that the shank of the shoe sole may be finished. This interchange of the tools will be effected by the spring 92 in which energy has been stored up as said spring is wound by the connections between it and the shaft involving a one-way`clutch to wit, the pawl 100 and A the ratchet 98. When suiiicient energyhas i been stored up in the spring, this clutch connection will be" broken by the actionof the cam plates untilthe tool holder has again been given a partial rotation to bring another tool int-o operative position. After this the one-way clutch connection will be automatically ree-established and the action repeated.

I-Iaving described our invention what we claim as new `and desire to secure by Letters Patent of the United States is y i `1. In a machine of theclass described, in combination, a shaft, means for x oscillating v said shaft 4arounduits longitudinalV axis, a`

sive use as the holder is intermittently turned. l

2.111 a machineof the classdescribed, in

combination, a shaft, means for oscillating` the shaft, a tool holder mounted on said shaft for intermittent rotary movement, a' latch on the tool holder for `locking it to the shaft to'oscillate therewith, `said latch extending to a point at the center of oscillation and rotation `to facilitate its operation without disturbing the operator, and a plurality of fin` ishing tools mounted on the tool holder and arranged to b e brought successively into operative position upon actuation of thelatch.

4. In a machine of the class described, in combination, a shaft, a tool holder having a plurality of finishing tools,"a\latch for locking the toolholder to the shaft, and means for oscillating the shaft and tool holder,- said latch extending to a point in front of the tool holder and atthe center of oscillation of the4 -tool holder when unlocked to bring the jdif- `ferent tools into operative positions.

6. In a machine of the class described, in

combination, a shaft, means ,for oscillating the shaft, a tool holder swivelled on said shaft `for intermittent rotation, finishing tools oppositely mounted on the tool holder for suctrolled by the machine, for rotating the tool holder'a partial revolution when unlocked.

7.` In a machine of the class described` in ,.combination, a shaft, means for oscillating the shaft, a tool holder supported by said shaft for intermittent rotation, finishing tools oppositely mounted on the tool holder for successive use, means for locking said holder to the shaft for oscillation or unlocking it, and a spring, connected to the tool holder and energized by the oscillation of the shaft,for rotating the tool holder a partial revolution when the latter is unlocked.

` 8. In a machine of the class described,`in combination, a shaft, means for oscillating the shaft, a tool holder-supported by said shaft for intermittent rotation, finishing tools mountedl on the tool holderfor successive use,

moansV for locking said holder vtothe shaft for oscillation or unlocking it, a; spring con.-

' nected tothe holderV for rotating theholder whenunlocked, and paw-1A and ratchetmechlmism for rewind-ing'the spring.,

9. In amachine of the class described, in

n o combinatiom a shaft, meansfor oscillating the shaft, a tool holder supported by said shaft: for intermittent rotation, ,finishing tools mounted-on'- the tool=ho1der for successiveuse,

meansfor locking said holder to the shaft for ,.15 oscillation, a ratchet; wheel on said shaft',` a.

springs-connected to the tool'holder and ratchet wheel, af pawl connected. to the oscillating anhaltend: moving the ratchetwheeli step by steph) wind: up the: springm'eans for trip- 30 pings the 1 pawh, and meansfonretaining the ratchet.' wheel: in position,

1Q. In aymachineofthe class described, in

.combinatioma tool holder having a plurality of finishing tools, means for oscillating the ,g5 tool holden, and means for intermittently turning thetool-holdor about the axisofoscil- `lation to bring- .differenttools; into working positiom A f 11;4 Inamachineoftheiclass described, in

; combination, a: tool.l holden having a plurality ofrfinishing tools, means for oscillating the tool holder, means for intermittently turning the tnol holderabout the axis of oscillation tm bring different cools intov Working posi- `35 tion, and means automatically limiting the tucninglmovement when avtool reaches said working position; V

" 1Q; Ina machine-ofi the class: described, in

oombinatiomatool holder having a plurality y 40 ofi finishing tools, means for oscillating the toolholder, and means intermittently-energized by the operation of the machine for turningthe tool holder vto bringthe toolssuccessively into working osition.

13. Ina machineof t Le-classidescribed, in combination, a tool holder having a plurality of; finishing,4 tools, means flor oscillating the holder, antIa spningl connected;v tothe holder for automatically rotating the'holdertoibring o thetools successively intofworkingposition.

vof finishing tools, means for oscillating the holder, a spring connected to the holder for automatically rotating the holder to bring the tools successively into Working position, and means actuated by the machine for winding up the spring.

17. In a machine of the class described, in combination, a rotary tool holder having a plurality of linishing tools, a spring for intermittently rotating the tool holder to intei-change the tools, pawl and ratchet mechanism for energizing the spring, and a cam carried by the ratchet for tripping the pawl.

18. In a machine of the class described, in combination, a rotary tool holder having a plurality of finishing tools, a ratchet Wheel, a spring connecting the tool holder and the ratchet-wheel, a pawl, means for oscillating the pawl to turn the ratchet Wheel, and a cam connected to the ratchet Wheel for releasing the pa-wl.

19. In an edge settingy machine, in combination, a shaft, means for rocking the shaft, a tool holder secured to said shaft, and a plurality of edge setting tools yieldingly mount- 'ed on said holder and arranged on opposite sides of said shaft to balance each other, each tool having its longitudinal aXis arranged at asmall angle to the toolgholder to present, the Working end in the desired position when the tool is 1n use.

20. In an edge setting machine, in combination, a` horizontal rock shaft, means for rocking the shaft, a plurality of edge setting tools each connectedvto the shaft with its longitudinal axis tipped. forwardly to present/its Workingend invproper Working position, and means for intermittently turning said tools around the shaft to bring them successively intovsimilar operative positions. 21. In' an edge setting machine, in combination, aV horizontal rock shaft, means for rocking the shaft, a tool holder mounted on each-end of the shaft at right angles thereto for oscillating movement with the shaft or rotation about the axisof the shaft, and a plurality of edge setting tools yieldingly carried by each tool holder at an inclination thereto,

2Q. In an edge settingmachine, in .combination, a rock shaft, means for rocking the shaft, a tool` holder on said shaft, and means for locking the-tool-holder to the shaft and unlocking the sameltoallowit' to be turned aroundthe shaft.

23. In an edge setting. machine, in combinati'on, a-rockv shaft, means for oscillating the rock shaft', a tool:y holder secured to the shaftto-rock therewith, edge setting irons mounted in the-toolzholder onopposite sides of; the shaft, and-springsfinterposed between the irons and, the y. holder. to e cushion the, tools aga-instnpressureaof 4the work.

24.In1anedge setting machine, inv combination,- a: symmetrical tool holder, means `mounted `tool to heat the tool by radiation, and a :tor rocking the tool holder aboutits `1 axis,

edge setting irons mounted on opposite sides of thetool holder, and springs interposed between the irons and the holder to cushion the tools against pressure ot the Work.`

` 25. A machine ofthe character described, having, in combination, a frame, an idle tool, means for moving the tool to operative position, a slide mounted on the frame, an electricheating unit secured to the slide near the path of movement of the tool to heat the tool by radiation, a shield partially enclosing the tool and the unit, and means for moving the slide and the unit toward and from the tool to control the amount oi heat transmitted to saidtool. i Y

` 26; In anedge setting machine, in combination, a frame, an edge setting tool, means for rapidly oscillating` the tool, a slide mounted on the frame, .an electric heating unit secured to the slidenear the path of movement ot the toolto heat theftool by radiation, manually operablemeans tor moving theslideand the unit'tovvard and from the `tool to `contr-olthe `amount of heat transmitted to said tool, and a friction member for holding the slide in -adjusted position.

27. In an edgesetting machine,`in combinati-on, a tool holder, means for oscillating `the tool holder, apair of edge setting irons carried by the holder and arranged to be j brought successivelyinto Working position,

an eleetriclieating unit mounted adjacent to each iron, and a shield enclosing that heating `that ironwhich is not in use to keep the iron `hot and readyfor use, and a shieldaencloslng both the heating unit and the iron;

Q9. In an edge setting machine, in combinatioma tool holder, means tor oscillating the tool holder, a. pair ot `edge setting irons `carried bythe holder and` arranged to4 be brought successively into" Working position.,

`and a shield enclosing one` ot said setting irons to protect the operator andbeing open atl the `sides to "allovv turning' ot said iron to an operative position. j

80. In anl edge settingmachine, in combination, an edge` setting tool, means or oscillating the tool, anelectric heating unit near the path of movement of Vthe swivel mounting for the heating unit to allow it to turn to prevent damage to the Work.

3l. In an edge sett-ing machine, in combination, an edge setting tool, means for oscillating the to-ol, normally stationary heating means for the tool, and a floating support for the Lheating meansyto -alloiv displacement oit the heating means by accidental contact with the Work or the operator. Y

32. In `an edge settingmachine, `in combination, an edge setting tool, means 'for oscillating the tool, normally stationary heating means `tor the tool, a rocliable shaft supporting the heating means, and means cooperating With the shaft to hold the heating means yieldingly in normal position.

` 33. In an edge setting machine, in combination, an edge setting tool, means :tor oscillating the tool, normally stationary heating means for the tool, supporting means for `the heating means comprising a rockable shaft having a flattened portion, anda springpressed member engaging the flattened portion to hold the shaft and heating means yieldingly innormal position.

84:. In an edge setting machine, in combination, a tool holder having a plurality of edge setting tools, means for oscillating the tool holder to cause the tools to rub the Work,

and means `for automaticallyrotating the tool holder to bring the tools into Working position, said rotating means being rendered i effective by mere unlocking of the tool holder from the oscillating means.

35. In an edge setting machine, in combination, a tool holder having a lplurality of edge setting tools, means for oscillating the i tool holder to cause one ot the tools to rnb 37,. A machine of the character described, l. i

having, in combination, asplurality of shoe 'treating tools, means for actuating said tools "to treat the Work, a. spring ifor successively bringing the tools to Working position, and means for keeping the spring under tension. 38; Ina,` machine ot the class described, a rotatably mounted holder supporting a. plurality of shoe-finishing tools, a power-operated shaft for driving said tools, means including a one-Way clutch for utilizing the pon/'er of said shaft to shiit the holder to bring the tools alternately into operative position, and means controlled by the operator for preventing operation of the shitting means,` Y

'In a machine of the class described, a rotatably mounted holder supporting a plurality otshoe-linishing tools, a power-operated shaft for driving said tools, means including" acne-Way clutch for. utilizing the power of saidshaft to shift the holder to bring the tools alternately into operative position, and means for rendering said clutch ineffective.

40. In a machine of the class described, a rotatably mounted holder supporting a vplurality of shoe-finishing tools, a power-operated shaft for driving said tools, means including a one-way clutch for utilizing the power of said shaft to move the holder to ringv the tools alternately into operative position, means for rendering said clutch ineffective, and means for locking said holder in operative position.

41. In a machine of the character described, a movable holder supporting a plurality of shoe-finishing tools, a. power-operated shaft, means for transmitting the power of said shaft to one of said tools to give it a shoefinishing movement, means including a oneway clutch for moving said holder to bring another tool into operative position, and means for rendering said clutch ineffective.

42. In a machine of the class described, al shaft. a holder supporting a plurality of shoe-finishing tools rotatably mounted in said machine concentrically with said'shaft, means for transmitting the movements of the shaft to one ofthe finishingl tools, and means including a one-way clutch for moving said holder to bringanother tool into operative position.

43. In a machine of the character described, a. power-operated shaft, a rotatable holder supporting a plurality of shoe-finishing tools mounted concentrically with said shaft, means for oscillating said shaft through a narrow arc, means for interconnecting said tool holder and said shaft to transmit the oscillations of the shaft to the tool which is in operative position, and means including a one-way clutch for causing the cumulative oscillations of the shaft to produce al larger arc of move-ment of the tool holder at the will of the operator to interchange the tools and bring another tool into operative position.

44. In a machine of the class described, in combination, a shaft, means for oscillating the shaft, a tool holder supportedvby said shaft for intermittent turning movement, finishing tools oppositely mounted on the tool holder in balanced relation to the shaft, means for locking said holder to the shaft for oscillation, and means for transforming the oscillating movements of the shaft into a rotary movement of the tool holder when the locking means is released.

45. In a machine of the class described. in combination, a shaft, means for oscillating the shaft, a tool holder swivelled on said shaft for intermittent rotation, finishing toolsoppositely mounted on the tool holder for successive use, means for locking said holder to the shaft for oscillation or unlocking it, and means-independentof the operator and controlled by the machine, for transforming the oscillating movements of the shaft into a partial rotation of the tool carrier when the locking means is unlocked.

46. In a machine of the class described, in

combination, a tool holder having a plurality of finishing tools, a shaft, means for oscillating saidshaft, and connecting means between the shaft and the tool holder constructed and arranged intermittently to transform the oscillating movements of the shaft into a partial rotation of the tool holder about the axis of oscillation tovbring different tools into working position.

47. In a machine of the class described, in combination, a tool holder having a plurality of finishing tools, means for oscillating the tool holder, and means intermittently rendered effective to transform the tool-actuating movements of the tool holder into toolinterchanging movements of the holder.

48. In a shoe finishing machine, a powerdrivenshaft, a holder carrying a plurality ofshoehnishing -tools and mounted for rotational movement aroundsaid' shaft about an axis substantially coinciding with the axis of said shaft, means for detachably connecting the holder to the shaft, and connections between the shaft and holder constructed and arranged to deliver to the holder power derived from movement of the shaft and effective to move the holder around the shaftl to move one tool out of and another tool into working position when the holder is disconnected from the.` shaft.

49. In a shoe finishing machine, a rock shaft, a holder'carrying a plurality of shoe finishing tools and mounted foi` rotational movement around said shaft about an axis substantially coinciding with the axis of said shaft, means for detachably connecting the holder to the shaft, and connectionsbetween the shaft andholder constructed and arranged to;deliv,er to the holder power derived from movement of the shaft in one direction and effective to move the holder around the shaft to move one tool out of and another tool into working position when the holder is disconnected from the shaft.

50. In a shoe finishing machine, a rock shaft, means for oscillating the vrock shaft, a holder carrying a plurality of edge setting tools and mounted for rotational movement about said rock shaft on an axis substantially coinciding with theV axis of the rock shaft, means for detachably connecting the holder to said shaft to oscillate with the shaft, and connections between the shaft and holder constructedl and arranged to deliver to the 1 and another edge settingtoolnto Working L:

llO

position when the holder is disconnected from the shaft.

l. In a shoe finishing machine, a power driven shaft, a holder carrying a plurality of edge setting tools and mounted for rotational movement around said shaft on an axis sub- `stantially coinciding with the axis of the i a movable tool holder provided with a plurality of finishing tools arranged for use one at a time, means for locking said holder in operative position, means for moving the holder to bring another tool into position comprising an actuating` spring, a ratchet arranged to be operated to tension the spring, and a pawl formoving the ratchet, and means for disengaging the pawl when the spring has been brought to the desired tension.

53. In a machine for operating upon shoes, a movable tool holder provided witha plurality of finishing tools arranged for use one at a time, means for locking said holder in operative position, means for moving the hold- `er to bring another tool into position comprising an actuating spring, a ratchet arranged to be operated to tension the spring, and a pawl for moving the ratchet, and means for disengaging the pawl when the spring has been brought tothe desired tension comprising a sliding cam member, and means for reciprocating said cam member to lift the pawl. v i

54;. In a shoe finishing machine, an oscillating rock shaft, a tool holder rotatably mounted on said rock shaft, a housing secured to said rock shaft adjacent to said tool holder, the rim of said housing forming a flange which is lrecessed to provide a notch, means on said tool holder arranged detachably to engage said flange in said notch, thereby to lock the tool holder to the housing and the shaft, and means concealed within said housing and constructed and arranged to transform the oscillations of the rock shaft into a turning movement of the tool holder when it is released from the housing.

55. In a shoe finishing machine, an oscillating rock shaft, a tool holder rotatably mounted on said rock shaft adjacent to the end thereof and having a locking part, a housing secured to said rock shaft having an open end adjacent to the tool holder provided with a flanged rim upon which the tool holder locking part slides as the tool holder rotates, the flanged rim of said housing having notches to cooperate with said locking part to secure the tool holder in operative positions with respect to the shaft, and resilient means urging said part into one of said notches.

56. In a. shoe finishing machine, an oscillating rock shaft, a rotatably mounted holder supporting a plurality of shoe nishing tools, means for detachably connecting the holder to the shaft for oscillation therewith, said holder being mounted for rotation about the axis of the shaft, means for transforming the oscillatory movements of the shaft into a rotary movement of the tool holder, and operator controlled means for releasing the tool holder to permit its rotation. j

57. In a shoe finishing machine, an oscillating rock shaft, a holder rotatably mounted on said shaft supporting a plurality of shoe finishing tools, means for detachably connecting the holder to the shaft for oscillation therewith, means resisting rotation of the tool holder in one direction, and operator controlled means for releasing the holder for rotation in the opposite direction so that another tool may be brought into operative position.

58. In a shoe finishing machine, a movable tool holder for a plurality of shoe finishing tools adapted to `be brought alternatively into operative position, means for detachably holding said tool holder against the tool interchanging movement, and means comprising an oscillatory shaft and a one-way clutch for moving said tool holder when released to change the tools.

59. In a shoe finishing machine, a tool holder having a plurality of finishing tools, a shaft for oscillating the tool holder, said tool holder being rotatably supported for tool interchanging movement about an axis substantially coincident with the axis of said shaft, automatic means utilizing power derived from the sha-ft constructed and arranged to effect a tool interchanging movement, and operator controlled means for releasing the tool holder to permit such movement.

60. In a machine of the class described, a rotatably mounted holder supporting a plurality of shoe-finishing tools, a power-operated shaft for driving said tools, said tools being positioned symmetrically with respect to said shaft, means including a one-way clutch for utilizing the power of said shaft to shift the holder to bring the tools alternatively into operative position, and means controlled by the operator for preventing operation of the shifting means.

In testimony whereof we have signed our names to this specification. i

' ARTHUR W. BRICE.

WILLIAM HAMANN.

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