US2642103A - Heel drilling machine - Google Patents

Description

June 16, 1953 .1. w. ASHLEY ETAL 2,642,103

HEEL DRILLING MACHINE Filed Oct. 26, 1949 5 SheetS-Sheet 1 Inventor; John WAshZey James F Leahy June 16, 1953 J. w. ASHLEY ETAL HEEL DRILLING MACHINE 5 Sheets-Sheet 3 Filed Oct. 26. 1949 Inventors John WAS/212g James FLea/zy June 16, 1953 J. w. ASHLEY ET AL.

HEEL DRILLING MACHINE 5 Sheets-Shet 4 Filed Oct. 26, 1949 274 Inventors John WAshZey James FLeahy June 16, 1953 .-w. ASHLEY ETAL 2,642,103

HEEL DRILLING MACHINE Filed Oct. 26, 1949 5 Sheets-Sheet 5 Inventom Jqhn WAs/zley James F Lea/2y ney Patented June 16, 1953 HEEL DRILLING MACHINE I John W. Ashley and James F. Leahy, Beverly, Mass., assignors to United Shoe Machinery Corporation, Flemington,

New Jersey N. J a corporation of Application October 26, 1949, Serial No. 123,614 12 Claims. (01. Maj-93) 1 This invention relates to machines for forming in heels bores extending heightwise through said heels and serving as passages through which thermoplastic resin is injected for use in the attachment of the heels to shoes in accordance with the method disclosed in United States Letters Patent No. 2,600,507, g-rantedJune 1'7, 195 2, on an application filed in our names.

The present invention consists in the novel features hereinafter disclosed, reference being had to the accompanying drawings which illustrate embodiments of the invention selected for purposes of illustration, said invention being fully disclosed in the following description and claims.

In the accompanying drawings, I

Fig. l is a side view, partly broken away, of an illustrative heel drilling machine;

Fig. 2 shows an enlarged front IIII of Fig. 1;

Fig. 3 is a view on the line IIIIII of Fig. 2 showing a heel positionedand clamped in the machine ready to be drilled; r

Figs. 4 and '5 are views on the lines IV-IV and V-V respectively of Fig. 3 showing heelengaging platens of the machine; 1 Fig. 6 is a section on the line VI-VI of Fig. 2 showing a drilled Cuban heel, which has been covered and has attached to it a top lift, positioned and clamped in the machine preparatory to forming in the top lift a bore or passage which registers with a previously formed bore or passage in the heel;

Fig. '7 shows in perspective a. Cuban heel which has been bored by the use of the present machine and has also been slotted by the use of another machine preparatory to attaching the heel to a shoe by practicing the.method disclosed in said Patent No. 2,600,507;

Fig. 8 is an illustrative view showing in side elevation three Cuban heels which have a common base and are of different heights and which 'ew on the line have been drilled by the use of the present Inachine; and

Fig. 9 shows a lengthwise median section through a Louis heel which has been drilled by the present machine.

The illustrative machine will be described with reference to drilling Cuban heels 20 (Figs. 1, 3, 6, 7 and 8) preparatory to attaching the heels to shoes (not shown) by practising the method disclosed in said PatentNo. 2,600,507. Theheels 20,-at the time they are attached to the shoes commonly have formed in their attaching faces 22; (Figs. 6, '7 and 8) pairs of slots 24 (Fig. 7) which intersect and havethe general appearance of a letter X. As explained in said PatentNo. 2,600,507, after the heel 20 has been forced with heavy pressure against a heel seat of the shoe, viscous thermoplastic resin is forced by the use of an injector or gun (not shown) through a passage or bore 26 in the heel and into the slots 24 as well as into voids (not shown) formed between the heel and the heel seat of the shoe and into. undercut cavities (not shown) in said heel seat, the resin filling up the voids, cavities and slots and substantially the entire passage 26. The heel 20 is held under pressure against the heel seat of the shoe until the resin has cooled, shrunk slightly and hardened, the shoe, including the heel, which is then permanently secured to the shoe, thereafter being removed from the machine.

The illustrative machine comprises drilling mechanism 28 (Fig. 1) which is adjustably secured to posts 30 (only one shown) fixed at their lower ends to a base 32 (Figs. 1 and 2) and which is operated by any suitable source of power, for example an electric motor (not shown), said mechanism comprising a rotary drill 34 (Figs. 1, 2, 3 and 6) mounted for vertical reciprocation lengthwise of a vertical axis 36 of rotation. The

rotary drill 34 may be moved lengthwise of the axis 36 by swinging an arm 38 (Fig. 1) having secured to it a pinion 40 which is rotatably mounted in a drill mechanism housing 42 and is geared to a rack portion of a quill 44 movable along a vertical guideway 46 of said housing. Mounted for rotation in ball bearings carried by the quill 44 is a spindle or shaft 50 to the lower end of which is secured a chuck 52 in which the drill 54 is removably secured.

It is desirable to orient and in mostinstances to'centralize the attachingface 22 and a tread face 54 of the heel 20 with relation to said axis 36 and also to secure the heel thus positioned against movement. Accordingly, the machine comprises a drill jig 56 for quickly and effectively positioning the heel and clamping it preparatory to forming the passage 25. It is also desirable that the slots 24 shall cross each other approximately at the center of the attaching face 22 of the heel and that the inner end of the passage 26 shall break out or terminate at the bottom of the intersecting portions of the slots, the outer end of said passage terminating approximately at the central portion of the tread face 54 of the heel. The inner end of the passage 26 at the intersecting slots 24 is located at the transverse center of the attaching face 22 of the heel but is usuallylocated somewhat forward of cordance with the style of the heel the depth of ,7

the slots 24 as well as the angle 60 (Fig. 7) at which the slots are disposed to each other :and-. the positions of the slots longitudinally of the to.-pivotupon the carrier. v weightedthat it constantly tends to tilt clockattaching face of the heel. Moreoveritis.some?"- 1 times desirable in preparing Louis"heels"62 for;

attachment to shoes by the above mentioned method that the intersecting portions of the slots 24 shall be located slightly further rearwardof the attaching face of the heel than they would. be located in a Cuban heel having an attaching face of the same length-as that of the attaching face of such Louis heel. Since the heights and the 'back'angles 72 of Cuban heels'20- vary it will beapparent that central points '14, I6 of the tread face 54 and the planes defined by-the rims of the attaching faces of the heels are offset different distances I8 longitudinally of the heel from each other. Moreover, the plane of the tread face 54-and the plane of the'rim 58 0f the attaching'face 66 of the heel may be approximately parallel to each other, as in the case of some Cuban heels or may be inclined at a considerable angle to one'another as they are in the case ofextremely high heels.

It is desirablethat the outer end of the passage 26 shall be located at the central part of the tread face of the heel and that the inner end of said passage shall open into the intersecting portions of the slots 24. With the foregoing considerations in view the drill jig 56 is provided so'that the operator may quickly'and efiectively position and clamp heels of 'all'si'zes and/or styles in'the heel drilling machine. Themachine'will be described with reference to Cuban heels and as will be hereinafter explained'is provided' with special adjustments which'are'useful in adapting the machine for operation upon Louis heelsr The drilljig 56of the machine'comprises amain frame 80- secured'by bolt and nut combinations 82 (Fig. 1) tothe base-32. Securedbyscrews 84 (Fig; 2) to spaced upstanding side plates 86 of the main frame 80 is ahea'der 88 havinga cylindrical recess 90 in'which'fits'abushingorguide 92 having a bore or guideway 94 the axis of which is coincident with the axis 36- of the drill'34. The drill 34 fits slidingly in the bushing-92 Which is secured in a desired position intheheader 88 by a setscrew 96.

The upstanding side plates 86 of the main frame 80 have alined bores 98- in which are secured by screwsl00 bearing pins I02. Secured by screws I04 (Figs. 2 and 4) to a tread platen or plate I06are lugs I 08which are pivotally mounted upon the bearing pins I02. Fixed to the main frame 80 of the drill jig 56 are upstanding guide rods or guides IIO (Figs. 1, 2 and 5) upon which is slidingly mounted fortranslatory movement a yoke or carrier I I2 pivotally connected by a pin I I4 to a two-part rod I I6 which comprises a turnbuckle II8 (Fig. 1) and is pivoted to a treadle I20. The tread1e.l20 is fulcrumed at its rear end upon a bearing pin I22 secured to an angle bracket I24 fixed by screws I26 to a lower portion of a bench -I28 upon which the drilling machine is mounted. The treadle I20, and accordingly the-carrier II2, are con tread face 54.

stantly urged upward by a spring I30, upper and lower ends of which are attached respectively to a hook attached to the bench I28 and to the treadle, upward movement of the treadle being limited by engagement of the carrier with leather stops I32 (Fig. 2) secured to the rods IIO.

S'ecuredibyscrews I34; toi the :carrier 'II2 are bearing pins I 36 "upon which are pivotally mounted lugs I38 secured by screws I40 (Figs. 2 and 5') .to a lower platen I42, said platen being free The platen I42 is so Wise as' viewed' in Figs. 1 and 3, such movement beingilimited whenthere is no work in the machine'byljitsiengagement with the upper platen or with a stop I43(Fig 2). The upper or tread pl-aten-J06rtends2to: swing or tilt counterclockwise as viewedin Fig. 1, such swing movement being limitedby the engagement of the platen with a stop I44 secured to one of the side plates 86.

' 'Forcepressed' into the'platens' I05; I42, which may bedescribed asbeing independently 'tiltable or'pivoted; are bearing'collars. I 4t, I48 =(Figs; 3; 4 and 6) respectively having formed in them bores I50," I 52 which are inalinementiwithithe guide" 92-andthrough which'the drill 34 passes in 'operatingupon'theheel. The collars I46, I48 may be considered as parts of their associated platens I06; I42, the bores'I50,' I52 in the collars being sufficiently large to enable thedrill to pass through the platen'srwithout' interference irrespective of the angle atwhichth'e platensare tilted;

As will' be' explained later; after moving side, rear and breast abutmentsor gages-I54, I55 and I58, respectively, to open or'retracted positions the heel 20 in which'i the resin receiving passage 26 isto be formed'is. presentedimanually: to the jig 56 by forcing the tread face54 of the'heel against portionsrofza flat lowersurface I60Cof the co'1larI46.of the platen'I06, the tread .face of the heel, after saidabutments have been released lto perm-it .fthem' to move under: spring acti'oni'to: their: gaging positions; being: oriented widthwise and lengthwise: by said' abutments. The". lower. face'vl 60 of the: collar. I 46 and a lower face I62 ioflthesplaten .I06-are.in;alinement and willzberreferred-toias: the heel engaging face I 60, I.62. of.:therplaten. A-horizontal axis I64 of the pivot pins; VI 02 extends along the. lower. surface I60; I62:of fthexplateniI06: and. isiarranged at right angles to the vertical axis 36 1engthwiseof which thedrill.34"is-r eciprocated.

- 'Iheisideabutments I54 are secured by, reversed screws and shoulder screws I68, (Fig. 4). I10 (Figs-.3 and4), respectively, to blocks I'I2 which overlie-theplaten I06 and have depending ribs slidingly fitting in corresponding slots I73 formed in-theplaten. Work engaging portions or faces of the side :abutment's I54 are disposed at right angles-to the-surface I60, I62 of the platen I 06 and engage :the sides of the heel adjacent to its The breast and rear abutments I58,: I 56 are secured by reversely arranged screws and shoulderscreWsI'M, I'Ifi toblocks I78, I80, respectively, which overlie the upper face of the platen. I 06vand have'dependingribs slidingly fitting irr'slots I82, I84 formed in said platen. A work engaging face- I86 of the breast abutment I58 is elongated so as to extend,- in Cuban work, against the lower breast edges of the heels. A work engaging face I88- of. the rear abutment I56 is-narrow, concaved laterally and extends downward to a considerable extent for a purpose whichwill behereinafterexplained.

Rotatably mountedupon the collar I46 are upper and lower carriers I90, I02 (Figs; 3, 4

and 6) having pairs of arms I94, I96, respectively, which are operatively connected through links I98, 200 and the shoulder screws I16, I10 to the side abutments I54 and to the rear and breast abutments I58, I56. The side abutments I54 on the one hand and the breast and rear abutments I58, I55 on the other hand are constantly urged as units to their closed or inner positions along their respective slots I13 and I82, I84 by springs 202, 204 which have their outer ends attachedto studs 206, 208 secured to the platen I and have'their' inner ends secured to studs which connect one of each of the arms I94, I96 to an associated link I98, 200. Mounted upon the carrier I92 is a stud 2I0 and formed upon th carrier I 90 adjacent to the stud is a shoulder 2I2. In order to open up the side abutments I 54 and the breast and rear abutments I58, I56 to insert the treadend portion of the heel 20 against the face I60, I62 of the platen I00, the shoulder screw I25; which pivotally' conneicts the link I98 to the abutment I56, has threaded onto it an upstanding handle 2I4 which may be gripped by the operator. With the above construction it will be apparent that when the handle 2I4 is slid to the right, as viewed in'Figs. 1, 3 and 4, the shoulder 2I2 acts upon the stud 2I0 with the result that'the side abutments I54, as well as the front and rear abutments 158, I56 are moved apart. As the carriers I90, I92 are rotated clockwise, as viewed in Fig. 4, under the action of the springs 204, 202, the tread end portion of the heel is first positioned transversely upon the platen I06 by the sideabutments I54 and thereafter lengthwise upon said platen by the breast and rear abutments I58, I56, the shoulder 2I2 of the carrier I90 being moved away from the stud 2I0. Whenever it is inconvenient to open up the side abutments I54 and th breast and rear abutments I58, I56 by theme of the handle2I4, the operator moves said abutments to their open positions by forcing the rear face of the heel against the face I58 of the rear abutment I56, such face depending below the heel engaging faces of the associated abutments for such purpose.

As will be explained later, in order initially to set up the machine to form in a separate operation passages or bores 2I6 (Fig. 6) in top lifts 2I8 of heels 20 after the passages 26 have been formed in the heels, it is desirable to provide adequate means for holding the heel abutments I54and the breast and rear abutments I58, I56 in their retracted or open positions. Accordingly, there is pivotally mounted upon a bearing stud 220 (Fig. 4) threaded into the plate I06 a latch 222 which, when the rear abutment I56 has been moved to its open position, engages a face 224 of the guide block I80 thus retaining the side abutments I54 as well as the breast and rear abutments I58, I56 in their retracted or open positions against the action of the springs 202, 204. The platen I42 has associated with it breast and rear abutments 226, 228 slidable along elongated slots-230, 232, respectively, a common longitudinal axis 254 (Fig. 5) of which is disposed at right angles to the axis 236 of the bearing pins I38 said axis 236 being parallel to the axis I64. The axis 236 extends along a work engaging face 238 (Figs. 2 and 3) of the platen I42. I

The breastv and rear abutments 226, 228 have work engaging faces 240, 242 (Figs. 3, 5 and 6). The breast abutment 226 is'secured by a'screw 239and a, shoulder screw 2M to a guide block 243 slidable along the slot 230.. Slidingly fitting in the slot 232 is aguide block 244 which is secured by a screw 246 and a shoulder screw 243 to aretaining portion 250 of the abutment 228. The collar I48 of the platen I42 has rotatably mounted on it a carrier 252 having a pair of arms 254 (Figs. 3 and 5) which are operatively connected through links 256 and the shoulder screws MI, 248 to the breast and rear abutments 226, 228. When the machin is operating upon Cuban work there is usually noneed of adjusting the rear abutment 228 with relation to the retaining portion 250 and accordingly said abutment and retaining portion may be formed integral. In order, however, to adapt the machine for varying, in'operating upon Louis work, the positions of the slots 24 lengthwise of the attaching face of the heel the rear abutment 228 and the retaining portion 250 are formed as separate parts so that the rear abutment may be adjusted with relation to said retaining portion. The rear abutment 220 is provided with a slot 258 extending parallel to the slot 232 and is initially secured manually in different adjusted positions along a channel 260 of the retaining portion 250 by a setscrew 262 which passes through the slot 258, is threaded into said retaining portion, and has a shoulder bearing against the abutment 228.

The breast and rear abutments 225, 228 are constantly urged to their open positions determined by the outer ends of the slots 250, 232 by a spring 264 opposite ends of which are attached to a stud 266 carried by the platen I42 and to a pin 258 pivotally connecting one of the arms 254 of the carrier 252 to a corresponding link 256. work engaging face242 of the rear abutment 228 is slightly concave and is constructedand arranged to engage the rear portion of the rim 58 of the attaching face 22 of the heel 20, the work engaging face of the breast abutment being beveled and relatively wide so as to engage the opposit'e upper breast edges of the Cuban heel or the forward edge of the lip of the Louis heel.

In order to move the breast and rear abutments 226, 228 to their closed heel orienting and clamping'positions against the action of the spring 264, the retaining portion 250 of the rear abutment 228 has secured to it a handle 21!) which may be grasped by the operator to move said abutments toward each other and against the heel thus causing the platen I42 to be freely tilted about its axis 236 while the heel is being oriented and positioned lengthwiseupon the surface 238 of the platen. The abutments I54 which engage the sides of the heel 20 near its tread face 54 are relied upon to centralize the tread and attach' ing faces of the heel widthwise. The retaining portion 250 of the rear abutment 225 extends laterally beneath a roll 212 which forms a part of a Horton clutch 2T4 andis arranged in a bifurcation 216 of the lower end of a lever 228 fulcrumed on a pin 300 carried by an upstanding lug 502 secured by screws 304 to the platen I42, said lever being constantly urged counterclockwise, as viewed in Fig; 3, by a spring 306.

Preparatory to operating upon the shoe the operator depresses the treadle I26 to lower or effect translatory movement of the platen I 42 with relation to the platen I06, the heel being presented to the machine with its tread face 54 upward. When the tread face 54 or" the heel has been brought into engagement with the surface I60, I62 of the platen I06 and has been positioned lengthwise and widthwise with relation to the The v axis-1 3 6.: by, the side, breast and 1 rear 'abutments I54; I58 and;. I56 the: operatorrremoves hiscfoot from; the; treadlez causingzupward; translatory movement of" the platen: I 42 andaccordingly the surface: 2.38= of such: platento-beemoved under spring pressure against: the rim of the at;- taching face v22 of the heel20;v Thehandle ,216 isz-then moved rearward that is to-therleft as shown in Fig. 13, causing the spaced platensIOB, #42? to be-independently'and freely-tilted about their :parallel axesI 64, 236' as the attaching face of'the heel is positioned uponthe platen. I42 lengthwise with relation tothe axiss36- bythe frontand rear abutments 226;228. The roll272 of the; Horton" clutch constantly engages a; face 3060f the retaining porti0n256- of the rear abutment 228 and 1 an inclined wedge" face 3 I 0? of a plate-formin part of the lug 362, the constructioniandarrangement beingsuch, that the rear abutment228 ispermitted to move rearward; that is; to the left as viewed in Figs. 3 and 5, but-when the spring is released,- is held against retractive movement-by the roll which is forced with'binding pressure-against the-face'308 by reason of action against-it of the wedgeface'3I6. After the heel 20 has been positioned and clamped, as viewed in Fig. 3, the-arm-3B of. the drill 34 isturned clockwise as viewed inFig. lto depress-the drill through thepositioned'and clamped heel to form the passage 26'. The arm 38 is then swung counterclockwiseto raise the drill to-starting position and the heel is removed from the machine.

It is desirabl from the standpoint ofeconomy to form the passages 26 in-the wood heels 20 in Wood heel turning plantsbut thisnecessitates subsequent drilling through the top lift 2I8 of the covered heel, the-passage 2-I6 being in register with the passage 26'. Covered heels having top lifts attachedto thenrmay-if desirable be drilled to form in one-operation the combined passage-26, 2-!6; It is also contemplated, after covering the heels and applying the top lift 2I6 thereto, to form in one operation thepassages 26, 2I6 of the heels, thepassages-26-commonly stopping just short of the attaching-faces 22-of.' the heels and the' slots .which are formed in said attaching faces during.;a subsequent operation; breaking through'the inn-er ends of the passages 26. ThG'dOWl'lWZi-Id extentsof the-passages formed by such modified practice are determined by an initially adjustable stop (not shown) with which thedrill actuating arm 30-engages;

Whenit'is desirable to equip themachine'to operate upon heels-having top lifts' 2I8- soas to-form the passages 2I6; thereis inserted inva recess' 3l2 of the yoke or carrier, I I 2:-a pinzor spindle 3| 4 (Fig.6), said-pin beingsecuredto the yoke by a setscrew 3 I 6. After the .treadle I20 has been depressed to lower the platen I 42 the covered heel 26in which the'passage 26 has been formed and to which thetop lift 2H3 has been attached is placed on the pin 314 with the pin fitting in the passage andith'e covered rim 58' of the attaching face-22 of the heel resting upon the surface 238 ofthe platenl42, the breast and rear abutments 226, 228 'being held in their open positions bythespring 2.64, a-nd'the-side breast and rear abutments I54, I58'andI56; respectively, being held in their open positionsby the above described latch 222 which when in its operative position engages the face 224 of the block IBIl-of the rear abutment thus preventing such abutment and through it, the side and breast abutments, from movingito their closed positions underzthezactionbf. thesprings 202, 204-. The.

axis-of th'erpin 3I4 positlonedln'thedrill'jig- 58 is in alinement with the-axis36of rotation and reciprocation ofthe=dril1 34; When pressure against the'treadlei I26 is released the platen I42 jsrrajsed by the spring I 36, forcing'the top lift 2I8.:against the face I66; I62 of the platen I 06; the heelif necessary rotatingslightly under pressure of the plates tomove the. median heightwise" plane of-theheel into a position in which it"extends forward and rearward of the machine as shown in:Fig. 6. The operator then rotates the arm. 38 (Fig.1) clockwise to lower the drill 34 thus: forming in the'top1ift2I8 of the heel the passage12I 6 which is'in alinement with the'pre'viously formed passage .26: in .the heel. After raisingg'thedrill 36'the .treadle I 2.6 is again depressed preparatory to'remo'ving the heelfrom themachine.

Having thusdescribed .our invention, what 'we claim as new and desire :to secure by Letters Patent of the- United States is:

1. In :a heeldrilling machine, a pair'of spaced independently and freely tiltable platens mounted for relative translatory'movementto clamp between: them anyone of a plurality'of heels of different sizesand styles, means for orienting independently uponsaid platens with relation to a fixedaxis the tread and attaching faces respectively of "said heel, and a drill movable lengthwise of saidaxi to form in the heel a passage extending lengthwise of the heel.

2. In a heeldrillingmachine, a frame, guides secured to said frame, a platen mounted for free pivotal movement upon the frame, a second platen which is mounted upon said frame for freepivotal movement with relation to the first-named platen and is also mounted {for translatory movement upon the frame toward and'away from the first-named platen and generally lengthwise of said guides, meansfor moving independently into predetermined positions the treadand attaching faces of a heel upon the'first and second named platens respectively, a drill movable lengthwise of said guides,.and means for operating said drill to bore a hole in said heel;

3. Ina heeldrilling. machine, a pair of platens which are mounted for independent and free pivotal movement about parallel axes, respectively, and are constructed and. arranged to beengaged by the tread and attaching faces respectively of a 'heel, means. for effecting relative translatory movement of, the platensin a path disposed approximately at-right angles to said axes; a r0"- tatable-drill which is movable in a rectilinear pathrdisposed at right angles to the axes, sets of ases for independently positioning the tread'and attachingfaces of the heel upon the platens re* spectively, and means for operating the drill to form a-passage extending heightwise of the heel.

4. In a heel drillingmachine, a rotatable'drill, means for. rotating the drill about an axis, means for reciprocating the:drill lengthwise of said'axis, apairof platens havingfaces-constructed and arranged to beengaged respectively by the tread face of a heel and the rim of the attachingface of theheel, said platens being independently and freely-tiltable about parallel axes Which'lie approximately insaid faces' respectively of the platensand-which establish a plane including the axis of rotation ofthe:drill, means for efiecting relative-translatory movement of said platens as their axes ofrotation remain in saidplane-to cause the platens and theheel to be forcedtogether, .andmeans for: independently sliding the tread-.facei-of thesheeliandtheerimpf theiattaclre ing face of the heel then into forced engagement. with the platens into predetermined positions upon said'platens.

5. In a drilling machine, a jig for positioning and clamping any one of a plurality of heels of different sizes and styles, said jig comprising a pair of platens having heel engaging surfaces respectively, said platens being independently and freely tiltable about parallel axes which lie in said surfaces respectively and establish a plane, means for effecting relative translatory movement between the platens while their axes, remain in said plane and in parallel relation to each other to cause top lift receiving and attaching faces of the heel being operated upon to be forced against said surfaces of the platen, and means for independently centralizingsaid faces-of the heel upon said surfaces of the platens.

6. In a drilling machine, a jig for positioning and clamping any one of a plurality of heels of different sizes and styles, said jig comprising a pair of platens having heel engaging surfaces respectively, said platens being independently and freely tiltable about parallel axes which lie in said surfaces respectively and establish a plane, one of said platens being movable toward and away from the other while the axis about which it is tilted remains in said plane and parallel to the axis about which they other platen is tilted, and a spring for constantly urging said one platen toward the other to cause said surfaces of the platens to be forced against top lift receiving and attaching faces of the heel. 7. In a drilling machine, a jig for positioning and clamping heels to be drilled, a drill, said jig comprising a guideway for the drill,.a pair of platens which have holes in alinement with said guideway and which have opposed surfaces constructed and arranged to be engaged by the tread face of a heel and the rim of the attaching face of the heel respectively, said platens being independently and freely tiltable about parallel axes which lie approximately in said surfaces, means for effecting relative rectilinear movement between the platens while the axes about which the platens are tiltable remain in parallel relation to cause forced engagement of the tread face and the rim of the attaching face of the heel with said surfaces of the platen as said faces of the heel bridge the holes of the platens, means for independently orienting with relation to said guide the tread and attaching faces of the heel forced against said surfaces of the platens, and means for operating the drill along said guideway and through said holes to form a passage extending heightwi-se through the heel.

8. In a heel drilling machine, a pair of platens which are pivoted for movement about parallel axes and which have surfaces constructed and arranged to be engaged respectively by the tread face and the rim of the attaching face of a heel, a drill rotatable about an axis which lies inthe plane'of said axes and is disposed at right angles to said axes, side gages on the one hand and breast and back gages on the other hand independently movable along said surface of one of said platens, springs for urging the side gages on the one hand and the breast and rear gages on the other hand toward each other to orient the tread end of the heel on said surface of said one platen, means for effecting relative translatory movement of the platens to eifect forced engagement between the tread face and the rim of the attaching face of the heel and said surfaces respectively of the 10 platens, breast and rear gages slidingly mounted for movement toward and away from each other upon the other of saidplatens, a spring for constantly urging said breast and rear gages of said other platen away from each other, manually actuated means for moving the breast and rear gages of said other platen toward each other against theaction of said last-named spring to I centralize the attaching face of the heel on said surface of said other platen, a clutch for locking said manually operated means against movement to secure said breast and rear gages in their heel centralizing positions upon said other platen, and means for moving the drill in a rectilinear path extending lengthwise of its axis to form in the heel a passage extending lengthwise of the heel thus positioned and clamped.

9. Ina heel drilling machine, a drill, means for rotating the drill about and for moving it lengthwise of a fixed axis, a pair of platens which are independently tiltable, a spindle extending through one of the platens and adapted to be received in a passage formed in and extending generally heightwise of a heel to which a top lift has been attached, said spindle having an axis which is in substantial alinement with the axis of the drill, and means for effecting a relative movement lengthwise of said axis between one of the platens on the one hand and the other of the platens and the spindle on the other hand to move the heel to a predetermined position and to clamp it in such position, said drill, upon its rotation about and movement lengthwise of said axis, forming in the top lift of the heel a passage which registers with and is a continuation of the passage in the heel.

10. In a machine for drilling heels, a pair of platens mounted for independent pivotal move ment about parallel axes respectively, a spindle constructed and arranged to be received in a passage extending heightwise of a heel to which a top lift has been attached, means for effecting relative movement of translation between the platens to effect forced engagement between one of the platens and the rim of the attaching face of theiheel on the one hand and between the other platen and the tread end of the top lift of the heel on the other hand to orient the heel upon the spindle and to clamp it to the platens, and a drill movable in a rectilinear path through the top lift and into said passage to form in said top lift a continuation of said passage.

11. In a machine for drilling heels, a rotary drill, a guide having a drill receiving and guiding cylindrical bore, a pair of platens independently pivoted about parallel axes which are disposed at right angles to an axis of said bore and intersect such axis, a spindle which is constructed and arranged to be received in a passage extending heightwise of a heel to which a top lift has been attached, said spindle having an axis which is in alinement with the axis of the bore of the guide, means for effecting relative translatory movement between the platens to cause said platens to be forced against the rim of the attaching face of the heel and the tread end of the top lift of the heel to position said heel upon the spindle and to clamp it against movement, and means for moving the drill along said bore and through the top lift and into the passage of the heel to form in said top lift a continuation of said passage.

12. In a heel drilling machine, a drill, means for rotating the drill about an axis and for re cip-rocating it in a rectilinear path extending lengthwise of said axis, a pair of platens which aeaaroa are independently: .pivotedabout. parallel axes deconstructed and arranged to receive the wood heel by engagement in a preformed passage in the heel, a carrier for .one of the'platens and the spindle, means for operating the carrier tocause the tread end of thetoplift of the heelnupontthe spindle to be forced against, said'surface of said other platen and to causesaidsurfaceof'said one platen to be forced against the rim of .-the:attaching face of the heel saidiplatens andvspindle cooperatingto locate and hold against-movement the heel in a predetermined position, and. means for reciprocating the drill, said drill whenereciprocated in said rectilinear path forming. in said 5 toplift a passage which registers with thepreformed, passage of the Wood heel.

JOHN W. ASHLEY. JAMES F. LEAHY.

10 References .Cited, in the file of this patent UNITED'STATES PATENTS Number Name Date 1,022,874 Riddell Apr. 9, 1912 15 1,755,400 Knight Apr. '22, 1930 1,770,022 Bertrand July 8, 1930 1,895,106 Russ Jan. 24, 1-933 '1',962,243 Howard "June' 12, 1934

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