US2279430A - Method of and machine for heel breasting - Google Patents

Description

April 14, 1942. v E. E. WlNKLEY 2,279,430

METHOD OF AND MACHINE FOR HEEL BREASTING Filed Jan. 11, 1940 5 Sheets-Sheet 1 Figl.

/NVENTUK April 14, 1942. E. E. WINKLEY METHOD OF ANDMACHINE FOR HEEL BREASTING Filed Jan. 11, 1940 5 Sheets-Sheet 2 VENTUR ZVMm-Zz/MW? %*W M 5% April 14, 1942. E. E. WINKLEY 2,279,430

METHOD OF AND MACHINE FOR HEEL BREASTING Filed Jan. 11, 1940 5 Sheets-Sheet 3 Y1 Fig. 6.

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April 14, 1942 E. E'. WINKLEY 2,279,430

I METHOD AND MACHINE FOR HEEL BREASTING 5 Shgets-Sheet 4 I l/v/ 08 Flgtll.

April 14, 1942. E. E. WINKLEY METHOD OF AND MACHINE FOR HEEL BREASTING Filed Jan. 11, 1940 5 Sheets-Sheet 5 Figi13.,

Patented Apr. 14, 1942 METHOD OFAND MACHINE Fonz-HEEL BREASTING Erastus Winkley,

Lynn, "Mass, 'assignor to United Shoe Machinery: Corporation, Borough of Flemington, N. Jersey J a :corporation of. New

Application January 11, 1940,.Serial No. 313,409 :36: Claims. (01%;12-47-1) togive' the desired lateral concavity of breast surface, and. its cutting edge is I arc-shaped to-conform, at leastapproximately, to the shank-portion of theshoe at the breast line. The operation of forcing the knife through the heelis laborious and'also somewhat injurious to the heelzstructure-and adjacent shankportion of' the shoe due to the considerable pressure applied. The indi- 'vidual pieces .of leather or' leatherboard which form the heelare each compressed byvthe knife,

as it passes, and. subsequently expand so .as -to present a stepped :and irregular breast surface von the heel. The smoothing-up-of such; a surface in the following-scouringand finishing operations involves the expenditureof considerable time and labor.

Difficulty is encountered also in producing @a breast surface which merges with'the-"sides of the heel along lines that aresubstantially straight when viewed from the side of the shoe This is particularly thev case with heels that widen appreciably from top lift to heel seat and great care. in grinding the knife, jacking the shoe, manipulating the knife in the breasting operation and in is required to obtain the straight sidelines demanded by the trade. Insome instances, the breast edges must be straightened with a hand knife after the breasting out has been made.

An object of this invention is the provision of a. machine for cutting smooth breast surfaces, having straight side edges, on attached heels of the aforementioned type in an easy and efficient manner, and without distortion or injury to the heel or shoe structure adjacent thereto. In the attainment of this object there is utilized, as a feature of this invention, a novel kind of breasting tool that operates widthwise, or transversely, of the hee1,.progressively from top-lift surface to breast line, and without interference with other portions of the.shoe,'to cut a smooth and substantially straight breast surface of the desired lateral'concavitypn' the "heel. Other features ofthis invention arertoberecognizediin means'for' supporting an attached heelformovementacross the cutting edge of the breasting tool, from topliftsurface to breast-line centenalong acurved (path of pre-sele cted and variable radius to obtain straightlines atthe breast edges; in novel meansfor arresting'thefeeding movement of. the heel to the tool .at the breast 1ine, ,in1 means 'for'imparting acombined swinging andpredetermined shifting movement of the heel relative'to" the tool for-.completing'the 'breasting out from breast line cen'terto .eachoppo'siteend 10f 'the. breast line' in' a manner 'to maintain the breast edges straight throughout their .entire .lengths,v .and also in .meansfor preventing the aforesaid swinging and shifting. movement during the' initial .Tfeeding movement of. the 'heeliacrossthto'ol.

Another feature of this invention. is to be found in the provision of anovel .methodfor breasting attached. heels .by first forming on :the .heel aTbre'astsurface extendingufrom top liftto breast-line center and subsequently completing thebreast surface to each opposite end ..of the breast line. by means separating. movements of the heel .andth'e cutting edge .of a. breasting. too1..at .the .breast .line.

The abovesand other features ofthis invention will now be more particularly described with referencel to the accompanying drawings,- where- .in a preferred embodiment. of the invention is ,illustrated, and thereafter pointed out in the appended claims.

-In-. the drawings,

Fig.1. is a :side elevationof a heel-breasting V machineembodyingithis invention; I

Fig.2 ,is-Yan: end viewof the machine with some of the-elements brokenaway toshow the breastving tool;

' chine showing Figs. 3, 4;.'=an'dv 5 are.perspective views of component partsof the machine;

of apart of the work cardirection .of v the arrows :Fig- 6 is an: endview riage looking in the Figs. '7 a nd=8 are partial side views of the matwo relative positions of the breastingtool and work carriage assumed during .operationof the machine;

Fig. .9 .is -a. plan view. of apart of the machine .looking-inthe direction of the arrows XI-QXI, Fig. 1;

"Fig. 10-.is a perspective view of parts. of the machine showing the relative positions of the breasting 'tool' and-thezheel at the.--final stage ofwabreasting. operation;

'Fig. '11 is apartialsplan view of a portionof .of relative .sidewise .Iand

, bracket 22 in whic I 'At its lower endthe'shaft connected to a sup-I the machine illustrating the relative positions of the breasting tool and the heel at an intermediate stage of a breasting operation; I

Figs. 12, 13 and 14 are diagrammatic views illustrating the action, and position, of the breasting tool during the breasting operation;

Fig. 15' is a "side elevation of a completely breasted heel;

Fig. 16 is a partial plan View of a modified cutter head and breasting tool assembly;

2 results in a gradual lifting of the supporting member and its associated parts. The amount of lift for any given angle of swing can be varied by turning the knob 60 to change the position of the rollers 52. By suitable adjustment of thenut 21 the major part of the weight of the supporting member and the other parts carried-thereby may be transferred to the spring so that the load carried by the cam roller is reduced to a mini- Fig. 17 is'an end elevation-of the assembly l shown mm. 16;

Fig. 18 is a plan view of thabreastil tool em- I ployed in the modified assembly of,Fig.;16; and- Figs. 19 and 20 are diagrammatic viewsilluse trating the operation of the modified breasting toolofFig.16.

v In the drawings, III is a main frame on which is mounted a driving motor I2 and a cutter-head I frame I4. A shaft I6, carrying a cutter or breasting' m1 I8 having'teethfl, isioume d in the cutterhead'frame'and isconnected to the motor 'by means of a belt'20;j

Secured to the upper part of'the main frame, and extending outwardly therefrom, is a bearing. journaled' 'a shaft 24.

porting member 28. "'The shaftiand supportin member are suspended'on" the bearing bracket fby meansof a coil spring 26"engaging a nut 21 threaded 'on theupper end of the shaft; Mounted'bn the supporting member is alorigitudinally extending slide-rod 30; provided with. a stop collar 3|, on which is slidably mounted a carriage,

32. At its lower end the. carriage is guided on the supporting "member by a guideway 34 (see Fig. 3) extremity, an extended portion 42 to. which is secured a downwardly extending shaft35 jour- '4 naledin' a bearing boss of a box-like frame member 40 fixed to the lower part ofthe main frame "1.1

The extended portion 42 of the supporting member 28 rests on an arm 44 which is pivoted V to the frame member 40 by means of-a pin 46. A

suitable self-aligning bearing 62'is interposed be- I tween the upper surface of thepivoted arm and the extended portion of the supportingmember. Also pivoted to this frame member is a plate 48,

journaled on a pin'5II, and interposedgbetween the upper surfaceof this pivoted plate andthe lower surface of the pivoted armare-rollers 52 carried by a yoke member 56 which is- -adjustable lengthwise by means'of a screw 58 and aknurled adjusting knob 60. Mounted on the; lower sur-* face of the pivoted plate is a roller64 which bears v against the upper surface of a cam I36 journaled on the shaft 36. The cam rideswith'f-its' cam The supporting member-has, at its lower surface 61 on a fixed cam roller 68 carried by an upstanding part III of the frame member 4II.- Se-'- cured to the'extended portion of the supporting member is an angular arm 12 having a downwardly projecting portion provided-with aslot 14. The cam carries 'a radially extending rod 'I8 which projects through the slot 14. v

The supporting member 28 and carriage 32 carried thereby are, by virtue of the arrangemerit of the parts just described, swin'gable about porting member the cam 66 is turned by the arm 12 and the rod 18. The camsurface 61 is shaped so that the swinging of the supporting member to the common-'vertical-axis of the shafts .24 and I} 36 and are supported vertically by the cam roller 68 and the spring26. On swinging of the supare mounted .a heel-locating plate ably received an adjusting screw is an upstanding blocki shaped stop-engaging member I34 for cooperating with an adjustable stop the frame member 40.1..Adjustably mounted in mum and the lifting action of the cam 66 thus facilitated.

The purpose of the aforementioned swinging below.

Referring to Figs. 1, 3, 4 and 5, a carrier 82 is mounted for turning or tilting movement relative tothe carriage 32 on roller studs which engage arcuate slots 84 inthe carrier. The carrier has projecting portions at one end on which 85 and toepositioning elements 9|! and 92 ,(see Fig. 6). The heel-locating plate is adjustably mounted on the carrier by means of an adjusting slot 86 and a locking screw 88. A clamping member 94 controlled by a clamping screw 93 and having a lastengaging portion 96 and a toe clamp 98 is supported on the carrier. In Fig. 1 a lasted shoe S is shown in outline with the clamping member engaged there 'th and with its heel H located by theheel-locating plate and its forepart positioned by the toe-positioning elements.

The carrier is provided with a plate'IIII'I which is guided for arcuate adjustment thereon by means of a guide plate IIII and arcuate slots I02 in whichare positioned locking screws I04. Secured to the plate IlIIIis a block IIIB at the outer 'end of which an arm I08 is mounted for angular or cutter I8, thecarrier will be turned in a clockwise direction on the roller studs 80 so as to tilt the heel awayfrom the cutting edge of the breasting tool (see Figs. 1, 7, 8 and 12), due to the cammingaction of the roller I20 in the cam slot II4. By changing the angular position of arm I08 the amount of-this turning or tilting action may be varied.

'At its lower end the carriage 32 is provided with an upstanding portion-I22 in which is slid- I24, controlled by a nut I25. The adjustingv screw is also supported by a portion I28 extending from the carriage and is kept fromrotating by means of a yoke member I26 secured thereto and engaging a carriage portion I30 (see Figs. 4 and 9). Secured to the inner end of the adjustingscrew I32 and an arcuately I40 mounted on the upperportion of this'block is a control rod I36 having'a downturned end slidable in a slot I4 2: in a plate I38 secured to the frame member. This plate is provided'with an arcuate surface I39 over which the end of the control rod may travel during a certain stage of the operation of the machine, as will be explained below.

The supporting member 28is provided with a projection I44 which is adapted vto engage one shown in Fig. 1, and the along the slide rod the the positi'on shown in further movement 'ciably adjacent its upper or heel-seat or theother of two stops I 46= and MB mounted 'on the 2 frame member 40 ('see Eig. 11-) In theoperation of the machineashoe, the heel of which is to be breasted, is first clamped on the carrier' 82 and an initial line-up and adjustment of-the heel is ma'debymeans of the heel-locating plate 85. The toe- positioning elements 90 and 92 are --a1so=set to accommodate the forepart of the shoe. In this initial lining-up the carriermaylbe tilted by adjustment of the plate Illfl' so that the heel is properly .positioned with respect-to the breastingtool or cutter 18. It willbe-understood that the=heel-wilbe so'positioned thatthe breastingtool-just clears, or removesa very small'ch-ip from; the preformed top lift T.

The-breasting tool I8 comprises a substantially conical element which is hollow-and has its open end or base facing toward the shoe. The cutting teeth I9, whicharepreferab-ly saw-'likein-character, are arranged in a circular series about the base ofthe breasting tool-and the axis of the tool is inclined at an angle with respect-to the general direction of movement of "the-shoeand its heel during the breasting operation. Thus the .plaminelud-ing-the circular series of teeth is inclined to the breast surface to be cut, as cutting edge formed by the teeth curves away from the heel in two directions (see Figs. 1-3 and '-14). With the cutter rotated at a relatively highspeed a clean and smooth breasting cut can be made on the heel with very littleeifort on the part of the operator .and with no distorting or damaging effect on 'theheel or adjacent shoeportions.

Referring to Figs. 7 and 8, in the former the carrier 82 is shown in the-position it assumes at the beginning of a breasting cut and at the point where the breasting tool has just passed through the'top lift of the heel being breasted. Upon continued movement of the carriage "32 parts eventually assume Figs. 8 and 14. At this point'the cuttingedge of the breasting tool has been-brought to the center of the breast line BZ at the shank portion Shby-movement of the heel over the tool. Engagement of the stopengaging element I34 with the'stop I40 prevents of the carriage, carrier and heel toward the cutter. During this initial feeding movement the downturned end of the conrol rod I36 engages the sidewalls of the slot I42. The heel H-is a relatively high built-up heel of the so-called Cuban type andwidensappreportion (see Fig. 14). 'In order that the'outer edges E of the breast surface B being cut may appear as straight lines, when viewed from the sides'of the heelisee Fig. 15), it-is necessary that the heel be passed across the cutting edge of the.

path which is slightly convexbreasting tool in a lengthwise of the shoe. This is due'to the fact that as the curved cutting edge of the tool reaches the widened upper portion of the heel the points of contact of the curved cutting edge with the outside surface of the heel become progressively nearer to the front or forepart of the shoe (see Fig. 13). Thus, if the heel were fed across the cutting edge along-a straight path, the breast edges would be curved forwardly of the shoe. In thepresent machine, however, as

the heel is fed to the tool by movement of the carriage 32, a tilting movement is imparted to the carrier- 82 andheel so'thatthe heel is moved across -the cutting edge of the breasting tool' along--a curued path. T'I'heibreast surface .(see Fig; 12) 1' thus: produced is slightly convex; lengthwise'of the shoeand theziam'ount ofz'curvature is just: sufiicient" to make'ithebreast aedges straight. As explained above, the tilting of ithe hee1 is accomplished bymeans of the arm "I88 mounted .on the carrier andithefffixed cam 12!), an'dthe curvature of "the. path. may be varie'dtby suitable angular adjustment .oftherarm.

Referring to Fig. 14,-the heel andfbreasting tool are shown in the .positions they assume upon completion 10f thexinitial: feeding movement just described. Theheel breast has been substantially completed with the exceptionsof :small portions X.X on each side .of .the breast-line center which have I not been reached due to the fact that the shank portion curves away from thecutting edge of theabreasting tool. *In order to complete the vbreasting cut on each side of ithezbreast-line center'and to the outer endsoi ,the'breast line .at the shank portion the heel is now swung sidewise .of the cutter to each side of the center ofthebreast. line, as illustrated in Figs.'l0 and 11'. In Fig. 11 the carriage 32 'has been swung to the right until the stop I Mon the supporting member engages the stopscrew I46. The cutter I8 has now been brought to one of the outer ends of 'the'breast line, and

upon reverse swinging movement to the posi-- The .axis of the shafts 24 and 36, about which the parts swing, is located rearwardly of the stop I40, and .during'these swinging'movements the curved stop-engaging member-IMis held by the operator againstzthis stop. Thus, by appropriately. shapingthe'part [34, the heel can be made to move'relatively to' the-cutting edge of the tool I8Jalong a pathof a curvature equal to that of theshank. Theswinging movements just mentioned are permitted as the control rod I36 has been moved .beyond'the =gro0ve I42 in the plate I38 at the completion of the initial feeding action so that its downturned end just clears the curved front face I39 (see Figr9, dotted lines). After the breasting cut hasbeen completed on each side of the breast-line center the .carriage is returned to its centralposition and theshoe and heel-are withdrawnfrom the breastingitool with the .control rod I36 again entering'ithe groove I42.

As the carriage 32 and its associated carrier '82 areswung to complete the breasting cut, as just -explained,'a lifting movement is also imparted to these members. The purpose of this lifting tmovement is 'to continue and maintain the 'straightness of the breast "-line edges throughout their entire length. Referring to Figs. 12, 13 and 14, it will be seen'that if the heelwereto be moved along an arc, the chord of which is substantially normal to the plane of therdrawing ofFig. 12; which'would be substantially the path of 'movement of the" heel during the aforementioned swinging movement were no lifting ortransverse'shifting of the heel H away'from the tool efiected, that the breastline edge would be curved rearwardly of the shoe since-that'portion of the curved cutting edge of thetool whichis adjacent the center of the br'east line would be projected through to the ming work is necessary;

outer edges of theheel breast. By appropriate lifting of the carriage, together with the carrier and the heel supported thereby, it is possible to compensate for this undesirable effect and, to complete the breasting cut in such a manner that the straight edges produced by the initial arcuate feeding of the' heel are continued throughout the entire lengths of the breast edges E. As explained above, the cam- 66 and its associated mechanism are provided for producing this lifting action, and the adjustable rollers 52 make is possibleto vary the amount of lifting to adapt it to any particular set of working conditions;

Concisely stated, the breasting of the heel in this machine is accomplished by an initial feeding'movement of the heel across the curved cutting edge of the breasting-tool along a path which is somewhat arcuate in character and such as to insure-that the curved cutting edge will produce a slightly concave breast surface ,the edges of 'which are straight, followed by a combined sidewise and separating movement of the heel relative to the tool for completing the breasting cut on each side of the breast-line center in such a manner as to maintain the straightness of the breast'edges.

Thus, in accordance withanother aspect 'of this invention, the breasting of attached heels of the type herein considered is carried out in a novel manner. vIn a broader sense this improved method for breasting attached heels consists of first breasting the heel from top lift to breast-linecenter and then completing the breast surface to each opposite end of the breast line by causing relative sidewise movement of the heel and the cutting edge of the breasting tool at the breast line. .More specifically, the initial breasting of .the heel from top lift to breast-line center is effected by feeding the heel across the curved cutting edge of a transversely operating breasting tool along a path which is arcuate in character, and such that the curved cuttingedge will produce a slightly concave breast surface the edges of which are straight,

whilethe subsequent completion of the breast surfaces is accomplished by means of a combined relative sidewise and separating. movement of the heel and tool of such a character as to insure the continuance of the straightness of, theside edges of the breast surface down to the breast line ends.

In Fig. 15 a completely breasted heel is shown in which the edges E are perfectly straightand the breast, which is substantially straight verti-; cally, is curved slightly lengthwise of the heel, as shown by the dotted line B. The action of the cutting tool I8 with its saw-like teeth: I9-is such that the breast surface produced is very smooth and free from irregularities. The'edgesof the. breast surface are straight and no'hand-trimalso, due to the smoothness of the surface produced, very little, if any, scouring is required.

As will be seen from Fig 13, the breasting tool produces a substantially vertically straight surface that'is slightly concave laterally ofthe heel, which is the usual practice, Where the radius of as is most commonly'the case, the conical cutter,

curvature of the breast surface is relativelylarge,

I8 is large enough to receive the forepart of the shoe with ample clearance provided for the sidewise swinging movement of the heel and the breasting tool can cut entirely from top-lift surface to heel-breast linewithout interference with:

other portions of the shoe. This is an important aspect of this invention because it makes possible the breasting of attached heels by means of a high-speed cutter operating transversely of the heel and the production of breast surfaces of superior smoothness, with little effort on the part of the operator and nodamage or distortion to the heel or adjacent shoe portions.

In someinstances, however,.it is desired to out a heel breast having a relatively small radius of curvature, in which case a conicalcutter of appropriate shape would interfere with the sole of the shoe before the breasting cut could be completed. For work of this kind a modified type of breasting tool or cutter which also operates transversely of the heel, and in a manner similar to that of the breasting tool I8, is provided.

Figs. 16, 1'7 and 18 illustrate such a modified type of tool. The cutter head frame I4, in addition to the shaft I5, also journals a shaft I50. The shaft I50 is provided with a crank I5I which drives a crank arm I52, secured to the shaft I5, through the medium of a connecting rod I54. Secured to the end of the shaft I6, and in place of the breasting tool I8, is a modified tool or cutter I56. Whenthe shaft I50 is rotated by the motor I2 through the belt 20 the shaft I6, together with the tool I56, is rapidly oscillated. The modified tool comprises an arcuate blade I58, of the desired curvature, having at its front edge a series of teeth I59.,

In the operation of this modified type of breasting toolthe teeth are oscillated back and forth across the front of the heel being breasted, in the manner shown in Fig. 19, the tool but partially clearing the breast surface at each end of its stroke. This tool, similar to tool I8 previously described, is capable of cutting from top-lift surface to breast line without interference with other shoe portions and produces a smooth breast surface. The heel of the shoe is fed across the cutting teeth I59 in exactly the same manner as described above in connection with the preferred form of breasting tool I8, and the sidewise swinging of the heel to complete the breasting out,

together with the lifting of the heel during the swinging movement, is carried out in the same manner and for the same purposes as previously explained. When this type of tool is to be used the cutterhead frame and motor are positioned on .the main frame I0 so that the axis of the shaft I6 is substantially alined with the general direction of movement of the heel for breasting, and suitable bolt holes (not shown) are provided on the main frame for securing the motor and cutter head frame in this position.

Having described the invention, what I is claimed as new and desired to be secured by Letters'Patent of the United States is: 7

1.1L heel-breasting machine comprising, in combination, a breasting tool having a plurality of teeth adapted to cut transversely of an attached heel and constructed and arranged to produce a substantially vertically straight and laterally concave breast from lift surface to breast line without interference with other portionsof a shoe, and means for supporting a shoe for movement of its heel against said tool to 7 breast said heel.

2. A heel-breasting machine comprising, in combination, a rotary breasting tool adapted to cut transversely of an attached heel and constructed and arranged to produce a substantially vertically straight and laterally concave breast from lift surface to breast line without interference with. other portion-sci a shoe; and means for supporting) the shoe v for movement of its heel against said toolto breast saidheel;

3. A heel-breasting machine, comprising, in combination, a saw-like breasting tool adapted to cut transversely of aheel constructed; and arranged to produce a substantially vertically straight breast on an attached heel from lift surface to breast line withoutinterference with other portions of a shoe, and means for supporting a shoe for movement. of its heel: against said tool to breast saidheel.

4. A heel-breasting' machine comprising; in combination, a breasting tool having a circular series of cutting teeth providing" a cutting edge and constructed and arranged to cut a substantially vertically straight breast on" an attached heel from lift surface to breastline without interference with other portions of a shoe, and meansfor supporting a-shoefor movement-of its heel against said cutting. edge in a direction'inclined substantially with respect to a plane including said cutting teeth to breast said heel.

5. A machine for breasting attached: heels comprising a breasting tool having a cuttingedge consisting of a plurality of teeth-adaptedlto'op-t erate transversely of an-attached heel andconstructed and arranged-to cut-a substantially vertically straight andlaterallyconcave breast on an attached heel from. lift surfacevto breast line without interference with other portions of a shoe, and means for supporting a shoe for movement of its heel against said tool to breast the heel.

6. A heel-breasting machine comprising a breasting tool. comprising a curved cutter having a series of teethproviding acutting edge adapted to operate transversely of an attached heel from lift surface to breast line. without interference withother portions of a shoe, and means for supporting a shoe for movement of its heel against said tool to breast the heel.

7.. Av heel-breasting, machine comprising arotarybreasting tool comprising a curved cutter having acircular series of teeth providing a cutting edge adapted to operate-transversely of an attached heel from lift surface to breast line without interference with other portions of a shoe, and means for supportinga shoe for move ment ofits heel against said tool'to breast the heel.

8; A heel-breasting machinecomprising an oscillatory breasting tool comprising a curved cutter having anlarcuate series. of teeth providing a cutting edge adapted to operate transversely of combination, a breasting tool having a cutting attached. heel; andlmeans for supporting a shoe for movement of :itsiheel acrosssa-id. cutting edge along a curved path to breast said heel.

10. A heel-breasting machine comprising, in combination, a breasti ngtool having acutting edge adaptedlto cut transversely of an attached heel and means. forsup-porting ashoe for'movement across said cutting edge along a curved paththat .is convex i rearwardly of the. heel, for breasting the heel ofi-saidzshoe-from-top-lift sur face to breast-line center, and laterally ofsaid tool, for completing the breasting of said heel-to the opposite outer ends of the breast line.

.11; A heel-breasting machine comprising, in

L combination, a-breasting tool having a cutting edge constructed and arranged to cut a concave breast surface on: anattachedlhe'el, and supporting means for a shoe movable to feed the shoe heel across said cutting edge from top-lift surface to breast-line centensaid means also being arranged for swinging; saidheelsidewise of said tool tocomplete abreasting cutto' each outer edge ofthe heel atthe breast line.

12. A- machine for breasting: attached heels comprising, in combination, abreasting cutter having an arcuate'series of cutting teeth providing a curved cutting edge, and meansfor supporting and moving anv attached heel across said cutting edge fromtop-lift surface to breast line,

I said means being constructed and" arranged to tilt said heel toward said cutter as said breast line is approached so that the traces of said curvedcutting edge on the opposite sides of said heel are substantially straight lines.

13. In a machine for breasting attached heels which widen appreciably from top lift to breast line, the combination with abreasting tool'having a curved cutting edge adapted to'cut transversely of a heel, of feeding; means constructed and arranged for feedingan attached heel across said cutting. edge to breast said heel from top lift to breast line in such a manner that the breast surface produced by said tool will have edges which are straight when viewed from the sides of the heel.

14. A machine for breasting attached heels comprising, in combination, a tool having a curved cutting. edge adapted to cut-transversely of a heel, means for feeding anattached. heel whichwidens appreciably. from-.t0p-lift to breast line. to the cutting edge of said tool-along a path that is slightly convex forwardly of the heel, means for swinging said heel-sidewise of said tool when said tool reaches the breast-line center to complete the breasting cut along the entire 15. A heel-breasting machine comprising, in combination, a breasting tool having a cutting breasting said heel from top-lift surface to breast-line center, said supporting means also being movable to swing said heel sidewise, and to shift said heel transversely, of said tool for completing the breasting of saidheel to the opposite outer ends of the breast'line.

, 16. A heel-breasting machine comprising, in combination, a breasting tool having a' cutting edge adapted to cut transversely of'an' attached heel, and shoe-supporting means movable to pass the heel of a shoe acrosssaid cutting edgealong a path that is convex rearwardly of the heel heel laterally, and to displace said heel transversely, of said tool for completing the breastingJof said heel to the opposite outer ends of the breast line;

1'7. In a machine for breastingiattached heels, a breasting tool having a c'utting'edge, and a shoe carrier forsupporting a shoe and its attached heel for feeding movement relative to said tool for breasting said heel, said carrier being mountedfor rectilinear movement toward said tool, tilting movement relative to said tool, swinging movement sidewise of said tool, and transverse movement in a direction to move the heel away from said tool.

18. That improvement in methods of breast ing attached heels which consists in first forming a breast surface on the heel from top'lift to breast-line center by effecting a relative heightwise feeding movement of said heel and the cutting edge of a breasting tool fromtop lift to breast-line center and subsequently completing said breast surface to the remaining parts of the breast line by causing relative sidewise movement of said heel and said tool along the breast line from the breast-line center to each opposite end thereof.

19. That improvement in methods of breast: ing attached heels which consists in first forming a substantially vertically straight and laterally concave breast surface on the heel from top lift to breast-line center'by effecting a relative heightwise feeding movement of said heel and the curved cutting edge of a breasting tool along a curved path from center and subsequently completing said breast surface to the'remaining parts of the breast line bycausing'a relative sidewise movementof said heel'and cutting edge of said tool along the breast line from breast-line center to each opposite end thereof. e I

20. That improvement in methods of breasting attached heels which consists in'first forming a substantially vertically straight and laterally concave breast surface on the heel from 7 top lift tobreast-line center by effecting a relative heightwise feeding movement of said heel and the curved cutting edge of a breasting tool along a path which is convex forwardly of the heel and extending from top lift to breast-line center, and subsequently completing the breast surfaceto, the remaining parts of the breast line by causing a' combined relative sidewise and separating movement of said heel and the cutting edge of said breasting tool.

21. That improvement in methods of breasting attached heels which consists in first forming a substantially vertically straight and laterally concave breast surface on the heel from top lift to breast-line center by effecting a relative heightwise feeding movement of said heel and the curved cutting edge of a breasting tool along a path which is convex forwardly of the heel and extending from top' lift to breast-line center and subsequently completing the breast surface to opposite ends of the breast line by causing a relativesidewise displacement of said heel and said tool and simultaneously effecting a relative separating ,movement of said heel and the cutting edge of said tool.

22. That'improvement in methods of breast ing attached heels of the type which widen appreciably from top lift to breast line which consists in first forming a substantially vertically straight and laterally concave breast surface having straight side edges on the heel from topliftlsurface to breast-line center by feeding the heel across the curved cutting edge of a transversely operating breasting tool from top lift to top lift to breast-line wise across breast-line center along a path that is convex forwardly of the heeLand subsequently completing the breast surface to opposite ends of the-breast line by causing a relative sidewise movement of said heel and the cutting edge of said'tool along a'path having a curvature substantially the sameas that of'the shank of the shoethe heel of which is being breasted and simultaneously effecting a separation of said heel and said tool sufficient to insure a continuance of the straightness of the side edges of said breast surface to'the breast line ends.

23. That improvement in methods of breasting attached-heels to produce breast surfaces having straight side edges which consists in feeding the heel acrossgthe cutting edge of a breasting tool from top lift to breast-line center to breast the heel from top lift to breast-line center and subsequently feeding said heel sidethe' tool from breast-line center to each opposite end of the breast line to complete the breastingof said heel along the entire breast line. p

24. That improvement in methods of breasting attached heels to produce breast surfaces having straight side edges which consists in feeding the heel across the cutting edge of a breasting tool along a curved path from top lift tobreast-line center to breast said heel from top lift to breast-line center and subsequently feeding said heel sidewise across said cutting edge from breast-line center to "each opposite end of the breast line to complete the breasting of said heel along the entire breast line.

25. That improvement in methods of breasting attached heels to produce, breastsurfaces having' straight side edges which consists in feeding the heel across the curved cutting edge of a breasting tool along a curved path from top lift to breast line center to breast said heel from top lift to breast-line center, and subsequently feeding the heel sidewise of the tool along a path having a curvature substantially the same as that of the shank of the shoe the heel of which is'being breasted to complete the breasting of said heel from breast-line center to. each opposite end of the breast line.

26. That improvement in methods of breasting attached heels toproduce breast surfaces having straight side edges which consists in feeding the heel across the. curved cutting edge of a breasting tool along a curved path from top lift to breast-line center to, breast said heel from top lift to breast-line center, and subsequently feeding said heel sidewiselacross said cutting edge along a path having a curvature substantially the same as that of the shank portion of the shoe the heel of which is being breasted and simultaneously withdrawing the heel from said curved cutting edge to complete the breasting of said heel from breast-line center. to each opposite end of the breast line.

27. In a machine for breasting attached heels a breasting tool having a cutting edge operable transversely of the heel to cut thereon, carriage means mounted for movement toward the cutting edge of said tool, supporting means for an attached heel movable with said carriage to pass a heel across said cutting edge, and means for tilting said supporting means during movement of said carriage to cause said heel to be moved across said cutting edge in a curved path.

28. In a heel-breasting machine, in combination, a frame, a breasting tool, means for feeding a concave breast an attached heel to said tool along a curved path, said means comprising a carriage mounted on said frame for movement toward said tool, a carrier mounted on said carriage for tilting movement thereon, an adjustable arm on said carrier, and means associated with said frame and engaging said arm, said arm and said last-named means being constructed and arranged to effect tilting of said carrier on said carriage during movement of said carriage and carrier toward said tool.

29. In a heel-breasting machine, in combination, a breasting tool adapted to cut transversely of an attached heel and constructed and arranged to produce a substantially vertically straight and laterally concave breast from lift surface to breast line without interference with other portions of a shoe, means for feeding an attached heel to said tool along a curved path, and means for varying the curvature of said path.

30. A heel-breasting machine comprising, in combination, a breasting tool, carriage means movable toward said tool and arranged for sidewise swinging movement relative thereto, means for limiting carriage movement toward said tool and for preventing said swinging movement until said carriage movement is completed, supporting means for holding an attached heel for breasting by said tool mounted on said carriage means for tilting movement thereon, and means for shifting said carriage transversely of said tool during said swinging movement, said several means being constructed and arranged to permit an initial feeding of a heel into said tool for breasting said heel from lift surface to breast-line center and a subsequent swinging and transverse shifting of said heel to complete the breasting of said heel on each side of the breast-line center for the full width of said heel.

31. A heel-breasting machine comprising, in combination, a breasting tool, carriage means movable toward said tool and arranged for sidewise swinging movement relative thereto, supporting means for holding an attached heel for breasting by said tool mounted on said carriage means for tilting movement thereon, and means for shifting said carriage transversely of said tool during said swinging movement, said several means being constructed and arranged to permit an initial feeding of a heel into said tool for breasting said heel from lift surface to breastline center and a subsequent swinging and transverse shifting of said heel to complete the breasting of said heel on each side of the breast-line center for the full width of said heel.

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32. A heel-breasting machine comprising, in combination, a breasting tool, carriage means movable toward said tool and arranged for sidewise swinging movement relative thereto, supporting means for holding an attached heel for breasting by said tool mounted on said carriage means for tilting movement thereon, cam means for shifting said carriage transversely of said tool during said swinging movement, and means for varying the shifting action of said cam, said several means being constructed and arranged to permit an initial feeding of a heel into said tool for breasting said heel from lift surface to breast-line center and a subsequent swinging and transverse shifting of said heel to complete the breasting of said heel on each side of the breastline center for the full width of said heel.

33. In a heel-breasting machine, in combination, a breasting tool, a carriage movable toward said tool and swingable laterally with respect to said tool, means for limiting movement of said carriage toward said tool and for controlling the lateral swing of said carriage, and means for preventing swinging of said carriage before the limit of movement of said carriage toward said tool is substantially reached.

34. In a heel-breasting machine, in combination, a breasting tool, a carriage movable toward said tool and swingable laterally with respect to said tool, adjustable means for limiting movement of said carriage toward said tool, and means for preventing swinging of said carriage before the limit of movement of said carriage toward said tool is substantially reached.

35. In a heel-breasting machine, in combination, a frame, a heel-breasting tool, a carriage mounted on said frame for swinging movement relative to said tool, means for supporting said carriage comprising a cam mechanism for lifting said carriage during said swinging movement,

and spring means for relieving said cam means of the major part of the carriage load.

36. In a heel-breasting machine, in combination, a frame, a breasting tool, carriage means movable toward said tool and carrying a tiltable carrier, said carriage means being mounted for swinging movement relative to said tool, means for moving said carriage transversely of said tool during said swinging movement, said lastnamed means comprising a cam rotatable with and supporting said carriage, a fixed roller cooperating with said cam, and means interposed between said carriage and cam for varying its moving effect.

ERASTUS E. WINKLEY.

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