US2498771A

US2498771A - Sole fitting machine

Info

Publication number: US2498771A
Application number: US17275A
Authority: US
Inventors: Ernest W Stacey
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1948-03-26
Filing date: 1948-03-26
Publication date: 1950-02-28
Anticipated expiration: 1967-02-28

Description

Feb. 28, 1950 E.r w. sTAcEY SOLE FITTING MACHINE 1l SheetsSheet 1 Filed March 26, 1948 f''nes WStacey By /zis Attorney E. W. STACEY SOLE FITTING MACHINE Feb. 28, 1950 11 sheets-sheet 2 Filed March 26, 1948 2 8 2 2 2 w Uu Mm QVMH 3 /%6M .P puw 0 mm I o0o`. 4 1150 0|4/ 22 0 .I 2 2 2 7 n W 4 e t A 6 Us.w a ln mh Mw r HJ pm 2 EB Feb. 28, 1950 E, STACEY 2,498,771

SOLE FITTING MACHINE Filed Maron 26, 1948 11 sheetsl-sheet 5 Feb. 28, 1950 u E, w, STACEY i 2,498,771

v SOLE FITTING MACHINE Filed Maron 26, 1948 11 sheets-sheet 4 In ven for Feb. 28, E W, STACEY SOLE FITTING MACHINE 11 Sheets-Sheet 5 FledMaICh 26, 1948 fr; venan Ernest VV. Stacey Feb. 28, 1950 E. w. sTAcEY SOLE FITTING MACHINE 11 Sheets-Sheet 6 Filed March 26, 1948 n vento Ernest W Stacey 5y his Attorney Anw AW/ Feb. 28, 1950 E. w. sTAcl-:Y 2,498,771

SOLE FITTING MACHINE Filed March 26, 1948 11 Sheets-Sheet 7 In vent 010 Ernest W Stacey' -By his Attorney Feb. 28, 1950 E. w. sTAcEY soLE FITTING MACHINE Filed March 26, 1948 1l Sku-3ecs-SheetA 8 In venof' Ernest WStacey By hisAttorn ey @TOR Q3 Fb' 28, 1950 E. w. sTAcEY 2,498,771

soLE FITTING MACHINE Filed March 26, 1948 11 Shee'tS-SheelI 9 Inventor Ernest W. Stacey By his Attorney E. W. STACEY SOLE FITTING MACHINE Feb. 28, A 195o 11 sheets-sheet 1o v Filed March 26, 1948 fh Ueow Ernest Stacey BZ )gis Attorneyv Feb. 28, `1950 i E. w. sTAcEY 2,498,771

soLE FITTING MACHINE Filed March 26, 1948 11 Sheets-Sheet 11 eosg @'21 209 209 23. V2oz: 206 209 230 2 0 '200 In ven for Ernest W. Sta'vvey By his Attorney Patented Feb. 28', 1950 SOLE FITTING MACHINE Ernest W. Stacey, Beverly, Mass., assigner to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application March 26, 1948, Serial No. 17,275

24 Claims. (Cl. 12-17) This invention relates to machines for operat-l ing upon soles of shcesand is illustrated as embodied in a machine of the general type disclosed in United States Letters Patent 2,081,961 and 2,219,341, granted June 1, 1937, and October 29, 1940, on applications led in my name.

It is an object oi the present invention to provide an improved machine of the general type disclosed in the above-mentioned Letters Patent.

The invention consists in novel features hereinafter fully described, reference being had to the accompanying drawings which illustrate one selected embodiment of the present invention.

In the drawings,

Fig. l is a front view, partly broken away and partly in section, of the illustrative machine;

Figs. 2 and 3 are left side and plan views respectively, partly broken away and partly in section, of a cutter head of the machine;

Figs. 4 and 5 are vertical sections through the cutter head on lines IV-K-IV, V-V of Fig. 3;

Fig, 5A shows in side elevation, a cutter adjusting screw driver and a bracket therefor whic is mounted upon the cutter head; y

Fig. 5B is a view on line VB-VB of Fig. 5;

Fig. 6 is a section on line VI-VI of Fig. 4;

Fig. '7 is a detail view showing portions of mechanism for securing roughing and rounding cutters to a drive spindle of the cutter head;

Fig. 8 is a section on line VIII-VIII of Fig. 1;

Fig. 9 is a front View, partly broken awayand partly in section, `showing portions of a Vjack of the illustrative machine;

Fig. 10 is a plan View of mechanism illustrated in Fig. 9;

Fig. 11 is a plan View, partly broken away and partly in section, showing safety mechanism for preventing operation of the machine when there is no pattern mounted upon the jack;

Fig. 12 shows in section a clutch for quickly and effectively stopping rotation ofthe cutters without stopping a motor drive of the machine;

Fig. 13 is a section on line XIII-XIII of Fig. l;

Fig.y 14 is a plan view illustrating a plurality of patterns of different sizes mounted upon the jack and the operation of a shank reducing cutter upon soles mounted upon said patterns;

Fig. l5 is a section on line XV-XV of Fig. 2 showing a cam for moving a rotary shank rcducing cutter to and from an effective position;

Fig. 15A is a section on line XVA-XVA of Fig. 15;

Fig. 16 is a plan Yview of a modied cam for Fig.rl'7 is a section on line XVII-XVII of Fig. 16;

Fig. 18 is'a bottom view of rotatablerounding,

roughing and shank reducing cutters of the ma' chine arranged in operating nested position in the machine;

Fig. 19 is an illustrative view showing the forepart of the sole being operated upon by the rounding and roughing cutters; Y

Fig. 20 is an illustrative view showing a shank portion of the sole being operated upon by the rounding and shank reducing cutters;

Fig. 21 is a section on line XXI-XXI of Fig. 19"

showing the operation of the roughing cutter and a work holddown formed integral therewith;

Figs. 22 and 23 are side and bottom views respectively of a clamp crosshead of the machine; and

Fig. 24 is a perspective view of a sole which has been operated upon by the illustrative machine.

The illustrative machine is described with reference to rounding a block sole I8 to a predetermined outline to form a sole 20 (Figs. 10,`

14 and 24), and simultaneously therewith shank reducing the sole at selected localities by roughing cuts to form beveled and roughened shank margins 22 (Fig. 24) extending from opposite ends of a break line 24 of the sole to points rearward of a heel breast line 26 of the sole, and reducing slightly and roughing the fore'part and the heel margins 28 of the sole. The purpose of roughingY the

margins

22, 28 of the sole is to prepare them for the reception of cement by which the sole is eventually to be attached to a shoe.

In performing the above operation a jack 3'0 (Figs. l, 2, 9 and 11) and a clamp 32 (Figs. 1 andv 2), between which a pattern 34 and the block sole I8 mounted thereon are clamped, are caused the detailed description the cutter 4U will bereferred to as the shank reducing cutter andi the cutter 42 as the roughing cutter.

The

cutters

38, 40 and 42 rotate about a com'- mon axis 44 (Figs. 2, 4 and 5) and are carried by a cutter head or carrier Y46 which is constantly urged byv a spring 48 (Figs. 1 and 1,1) and hereinafter describedv mechanism associated thereamarti 3 with toward the jack 38, the operating position of the cutter head being controlled by the engagement of an abutment 56 (Figs. 1 to 5 inclusive) carried by a depending bracket 5I of the head, with an edge or edge face 52 of the pattern. The cutter 4|] reduces the shank of the sole I8 and is depressed from an ineffective position shown in Fig. 4 lengthwise of its axis of rotation 44 to move it into a cutting position shown in Fig. 2, by mechanism which will be hereinafter described and comprises a lever 54 (Figs. 2, 4, 5 and l5) pivoted to the cutter head 46 and a cam 56 which is secured in operative position upon the jack 30.

The illustrative machine, except for hereinafter described changes, is similar to the machine disclosed in said Letters Patents 2,081,961 and comprises the cutter head 46 secured by screws 58 (Figs. 2, 3 and 4) to a gear housing 68 (Figs. 1, 2, 4 and 5) of a hollow arm 62 formed integral with a hollow post 64 (Figs. 1, 8 and 11) mounted for swinging movement about a vertical column 66 which is secured by screws 68 (only one shown) (Fig. l) to a stationary main frame 18 of the machine. The post 64 has at its base a flange 12 (Figs. l and 8) extending into arcuate recesses of retaining plates 14 secured by screws 18 to the main frame 10.

AS in the machine disclosed in said Letters Patent, there is provided a jack and clamp support 18 comprising a hollow carriage 86 (Figs-1, 8, 9 and 11) having opposed elongated slots or guideways 82 (Figs. 1 and 8) said carriage being mounted upon a guide block 84 which has front and rear tongues 86 slidingly tting in the slots 82 vof the carriage, and has a hub portion rotatable in a bearing column 88 (Fig. 1) secured by screws 90 to the main frame 18; As the carriage 86 is moved by mechanism hereinafter disclosed, to the right and left as viewed in Fig. 1 along the guide block. 84, it is controlled against swinging movement by a depending arm 92 (Figs. 1, 8 and 11) which is screwed to and forms, in eiect, part 0f the carriage and has a flange 94 fitting in guideways 96 formed in gibs 98 secured to the main frame 10.

Mounted for rotation in the support 18 is the 380k 36, upon which the pattern 34 is positioned and supported, and the clamp 32 which forces the sole to be operated upon against said pattern 34. The jack 36 comprises a pattern holder |00 (Figs. 1, 2 9 and 10) to .a base flange of which is secured by screws |82 (Figs. 1 and 9) a turret plate |64 rotatable in a cylindrical bore |66 of the support 18. The yclamp 32 is supported by a shaft |68 (Figs. 1 and 22) rotatable about an axis ||6 (Figs. 1 `and 9), which is coincident with the axis of the cylindrical bore |66, in a sleeve bearing I I2 of an overhanging portion of the support 18, said shaft having a shoulder engaged by a thrust bearing H4. A coupling I6 having trunnions I I6 pivoted in a bifurcated end of a lever |28 fulcrumed on a pin |22 carried. by an upstanding lug of the support 18, is interposed between the thrust bearing I I4 and a collar |24 secured to a reduced upper end of the shaft |68. As will be explained later, the lever |20 is moved clockwise as viewed in Fig. 1 upon depression of a treadle |26 which is pivoted at its rear end to the main frame 1|), to raise the shaft |08, which has splined to it a gear |28, and accordingly, to raise the clamp 32. The treadle |26 has pivotally connected to it a rod |23, said rod and treadle being constantly urged to raised positions by a spring interposed between a Shoulder 0f said rod and. the main frame 1u.

Pivoted to the right end of the lever |20 is rod |38 (Figs. 1 and 8) which passes through a bore in a lug |32 secured to the support 18, and which has at its lower end a flange |34 (Fig. 1), a pin |36 threaded into said support passing through a slot |38 in the rod and assisting in guiding said rod vertically with relation to the support. Surrounding the rod |36 and interposed between a shoulder of the rod and the lug |32 is a coil spring |46 which constantly urges the rod to a raised position in which, when there is no pattern 34 in the machine, the ilange |34 of the rod engages the bottom of the lug |32, the construction and arrangement being such that posts |42, |44 of the clamp 32 normally engage the pattern 34 positioned upon the jack 30 when there is no sole in the machine but cannot move substantially further downward. The treadle rod |23 is operatively connected through mechanism described in detail in said Letters Patent 2,081,961, to a vertically movable rod |45 (Figs. 8

and 11) having secured to its upper end a plate.`

|46 (Figs. 1, 3 and 11) which overlies a ange |48 (Fig. 1) at the lower end of the rod |36, the construction and arrangement being such that depression of the treadle |26 causes the rod |30 to be lowered but permitssaid rod to slide to the right and left as viewed in Fig. 1 with the support 18, as above explained, during the cycle of operation of the machine.

The. screws |62 (Figs. 1 and 9) pass downward through bores in a turret gear |58 which is ar-k ranged in concentric. relation with the axis H6, and into the upper part of the carriage 86, said screws serving to secure together the holder |08,

the turret plate |04, the gear and the carriage 88. The. carriage has` an internal rack |52 (Figs. 1 and 8), the sides of which are straight and the ends of which are semi-circular, the

l upper face of said carriage being in engagement with the bottom of the sliding support 18. As above explained the carriage 86 has formed in its sides the slots 82 in which the tongues 86 of the block 84 slidingly engage. Rotatably mounted in the block 84, is a shaft |54 (Figs. 1 and 8) to the upper end of which is secured a gear |56 Asupports the clamp posts |42, |44 at the same speed as the jack 30, there is provided a train of idler gears |12 (Fig. l) which are mounted for rotation upon. bearing pins |14 carried by the support 18 and are operatively connected, through gears |16, |18 secured to opposite ends of a shaft |88 rotatable in the support, to an idler gear |82 (Figs. 1 and 9) rotatably supported upon a bearing pin |84 which is secured to the support and meshes with the turret gear |50. The holder |00 has a fiat upper face |86 (Figs. 2, 4, 9 and 11) upon which the pattern 34 is placed, and a. pair of upstanding pins |88 which extend through bores |98 in the pattern 34. The bores |90 in patterns 34 of different sizes are positioned an equal distancel from the lengthwise median points of the patterns, said patterns being arranged as illustrated in Fig. 14 upon the holder |06'. In such a construction it is desirable to move the clamp posts |42, |44-lengthwise of the patterns 34 in order effectively to clamp the foreparts and amener'.

the heel ends of soles of different sizes against corresponding patterns.

The same pattern 34 is used in operating upon` both right and left soles of a given size, such pattern being reversed upon the holder |00. Accordlngly, in addition to adjusting the clamp postsv |42, |44 lengthwise of the pattern with relation to the holder |00, it is desirable to swing such posts to slight extents into different forward and rearward adjusted positions as will be hereinafter described, thus insuring that the posts shall effec-r tively clamp the left and right soles against the patterns. The crosshead |68 which is disclosed in detail in said Letters Patent 2,081,961 comprises left and right slides |92 (Figs. 1, 2, 22 and 23) having guideways |94 (Fig. 22) for receiving a T-shaped portion |96 of a foot plate |98 which is supported upon a pin |99 (Fig. 2) carried by the rod |08 and is normally held in a horizontal position by a spring-pressed plunger The slides |92 are adjustable for equal and opposite movement on the T-shaped portion |96 of the foot plate |98, upon rotation of right and left

screws

200, 202 which form part of a shaft 204 rotatably mounted in a boss 206 of the foot plate |98 and which are threaded into bosses 2|0, 208 respectively of the slides. The shaft 204 is held against lengthwise movement in said boss 206 by a pair of collars 209 pinned to the shaft and engaging opposite sides of the boss 206. The slides |92 are conveniently adjusted lengthwise of the foot plate |98 to arrange the posts |42, |44 for being forced against the forepart and the heel ends of soles of different sizes mounted upon the pattern 34, by turning a knob 2|2 secured to a shaft 2|4 which is rotatably mounted in the foot plate and has pinned to it a worm Wheel 2 6 meshing with a worm 2|8 (Fig. 22) secured to the shaft.

Formed integral with the posts |42, |44 at their upper ends are plates 220 (Figs. 2, 22 and 23) the outer ends of which t in slots 222 formed between main portions of the slides and retainer plates 224 secured by screws to the slides. The plates 220 have formed in their outer ends, slots 226 (Figs. 2 and 23) for receiving pins 228 secured to the slides |92, said plates 220 and, accordingly, the Work clamping posts |42, |44 being secured in either of two angular positions shown in full and dash lines respectively of Fig. 23 and determined by notches 238 in said plates, by spring-pressed detents 232 carried by the slides.

The post 64 which carries the cutter head carrylng arm 62 has pivoted to a rearward extension of its lower end a link 234 (Figs. 1 and 11) which is pivoted to an upper arm of an oifs'et bell crank lever 236 secured to a pin 238 journaled in the main frame 10. Pivoted to the lower arm of the bell crank lever 236 is a rod 240 extending into a hollow guide 242 (Fig. 1) threaded into the main frame 10, the spring 48 which is interposed.

wise as viewed in Fig. 11 to operate through an" idler gear 246 rotatable upon a pin 248 secured to the main frame 10, a gear segment 250 and,

is mounted for rotation in bearings 216, 218

ment is secured counterclockwise against the action of the spring 48. Secured to the upper end of the shaft 252 is an arm 254 operatively connected through a link 256 (Figs. 2, 4 and 11) to the cutter head 46, counterclockwise movement of such arm as viewed from above causing rearward movement of the cutter head to its retracted or starting position away from the jack 30, in which position it is held by a pawl (not shown) corresponding to the pawl 464 disclosed in Letters Patent 2,081,961.

Adjustably secured by screws 258 (Figs. 2, and 5) in a guideway 260 formed in the cutter head bracket 5| is the abutment 50, a cylindrical work engaging face 262 (Figs. 1, 2, '3 and 4) of which is constructed and arranged to engage, as

the hollow arm 62 is swung forward by the above' described mechanism operated by the spring 48, the edge 52 of the pattern 34 clamped to the holder |90. In order that the abutment 50 may be removed from the cutter head and replaced in the same operative position in said head, therel to hold said nut in adjusted position. The face 266 of the rod 283 also serves as a stop for insur-` ing against rearward displacement of the abutment 50 from its adjusted position during engagement of the abutment with the pattern 34.

An inclined shaft 268 (Figs. 1, 4 and 12) in the hollow farm 62 has xed to its outer end a spiral gear 210 (Fig. 4) meshing with a spiral gear 212 (Figs. 3 and 4) keyed to a vertical shaft 214 which (Fig. 4) in the housing 60 and the cutter head 46 respectively and is held against axial displacement. Fixed to the lower end of the shaft 214 between an inner ra`ce of the bearings 218 and a retaining screw 280 threaded into the shaft, isv

and a ball bearing 298 supported by a sleeve actuator slide 300which is raised and lowered twice during each cycle of operation of the machine by mechanism hereinafter described in detail. The ball bearings 298 are secured in their operative positions between shoulders of the sleeve 286 and the sleeve actuator slide 300 by a screw 30| threaded into the slide and having oil rings 302.

The cutter carrier 288 is provided with a plurality of circumferentially spaced keyhole slots 304 (Fig. 18) for receiving pins 306 (Figs. 2. 4, 5 and 18) projecting from the cutter 40 to which a plurality of V-shaped blades 3|0 having threaded studs 308 rare secured by nuts. The cutter 40 is secured to the carrier 288 by projecting the pins 306 of the cutter through the enlarged portions of the slots 304 and rotating the cutter with relation to the carrier, causing the pins to enter reduced portions of the slots 304 and to be held inl place by a flexible disk 289 (Fig. 4) of the carrier. The blades 3| 0 shank reduce the sole by roughing in the bracket being forced against the nut 264' cuts as yabove described to i'orm the beveled shank margins 22.

Extending vertically through bores 312, 3|4 (Figs. 4 and 5) in the sleeve 286 is a stepped cutter drive shaft 315 which has a reduced upper end passing through bores in spaced circular flanges 318 (Figs. 4, 5 and 6) 0f an elevating slide 323 (Figs. 3 yand 5) mounted for vertical movement in a. guidew-ay 322 (Fig. 5) of the cutter head 46. To the flanges 313 of the slide 32B are secured outer races of a ball bearing 324 (Figs. 4 and 5), inner races of said bearing being Secured, as best shown in Fig. 6, to the reduced upper end of the shaft 3l6 by a nut 325 threaded onto the upper end of the shaft. The drive shaft 3l6 has a bore 328 for receiving a rod 333 which is threaded at its upper end to the shaft 3i6 and has at its lower end a rounded portion 332 (Figs. 4, 5 and 5B) iitting in a recess 334 in the central portion of the upper face of an abutment plate 335 movable in a transverse slot 333 formed in the drive shaft 3&5. The cutter drive shaft 3&5 is rotated in response to rotation of the sleeve 285 through pairs of stepped keys 343 winch are mounted in slots 342 of the drive shaft, upper portions of said keys fitting in opposed vertical slots 344 (Fig. 5) of the sleeve.

Fitting on a boss of the drive shaft 356 and partly inside the lower end of the sleeve 28S is the roughing cutter 42 which is provided with keyways 345 for receiving portions of the keys 348 in order to rotate said roughing cutter in response to rotation of the drive shaft. The roughing cutter 42 which as above explained reduces by roughing cuts the margin of the forep'art and the heel end of the sole to a slight extent, comprises a plurality of blades 343, teeth of which operate upon the sole with a shredding action, said blades being secured to the main body of the Acutter by clamps 353 (Figs. 18, 19 and 2l) having threaded shanks for receiving nuts 35i. In the illustrative roughing cutter 42 there is positioned just :ahead of each of the blades a holddown portion 353 of the associated clamp which straightens out the sole just ahead of the blade, thus insuring against distortion of the sole as it is being operated upon by said blades. The roughing cutter 42 is held against the abutment plate 335 by a spring 352 (Figs. 2, 4 and 5) which engages the lower face of the roughing cutter and is supported by the rounding cutter 38. The rounding cutter 38 is supported in its operating position against the action of the spring 352, by mechanism which will be described presently.

The rounding cutter 318 is bored to t o-n a hollow boss portion of the drive shaft 3l3, said cutter having vertical slots 354 (Figs. 4 and 5) for receiving the lower ends of the stepped keys 34B. The rounding cutter 38 has a plurality of straight cutting edges 355 (Figs. 18, 19 and 20) terminating at their lower ends in cutting edges 358v which may be considered as extensions of the cutting edges 355 and which are angularly disposed to the cutting edges 355 and chamfer the sole by beveling cuts adjacent to its grain side. Slidingly mounted in a bore 350 (Fig. 5) at the lower end oithe drive shaft 31.5 is a. plunger 352 (Figs. 2, 4, 5 and 7) having shoulders 354 (Figs. 5 and '1) and a projecting pin 365. Pivotally mounted upon pins 353 (Fig. 5) secured to the drive shaft 3&6 and passing through slots 35B of the drive shaft are pairs of latches 310, upper faces of which are constructed and arranged te" be engaged bythe shoulders 364 of the plunger 362 acted on by a spring 312 (Fig. 5) positioned in the lower end of the bore 328 of the drive shaft between the abutment plate 336 and an upwardly facing shoulder of the plunger and serving to force lips 314 of the latches against a lower face of the rounding cutter 38.

The roughing cutter 42 and the rounding cutter 38 may be readily placed in their operating positions in the cutter head 46, after lifting the plunger 362 against the action of the spring 312, to cause the pin 355 of the plunger to swing the latches 315 into positions in which their lips 314 are moved adjacent to each other, the roughing cutter 42 being slid onto a boss portion of the drive shaft 3&6 with the key 343 fitting in theA keyway 345 (Fig. 5) of such cutter, until the cutter engages the abutment plate 336. The spring 352 is thereafter pressed by hand against the bottom of the cutter 42 and the rounding cutter 38 is slid onto another boss portion of the drive shaft in keyed relation therewith against the bottom of the spring 352 then slightly cornpressed, the operator thereafter releasing the plunger 352 to permit the lips 314 of the latches 3i@ to swing outward into supporting positions in engagement with the bottom face of the rounding cutter.

When the shank portions of the sole are being operated upon, the shank reducing cutter 45 is in its lowered operating position shown in Figs. 2 and 20, the cutters38, 43 and 42 being arranged in interspersed relation such as shown in Figs. 2 and 18. When the forepart and the heel end of the sole are being operated upon, the shank reducing cutter 43 is held in its raised position a considerable distance above the sole as shown in Figs. 4, 5 and 19. In shoes having leather heels it is desirable that the beveled and roughened shank margin 22 (Fig. 24) formed by the cutter 43 shall extend from the break line 24 oi the sole to approximately the heel-breast line 25 of the sole. In the manufacture of shoes having wood heels the cutter 43 operates upon the sole rearward of the heel-breast line 25, the shank reducing cuts commonly extending to the rear end of the sole as indicated in dotted lines 31| (Fig. 24).

The sleeve actuator slide 593 has a bore 316 (Fig. 5) into which extends a cylindrical portion 318 of a plate 333 secured by a nut 332 to a shoulder of a pin 334 (Figs. 2, 3 and 5) vertically reciprocable in guideways 335 (Fig. 5) of the cutter head 46 which comprises a cover plate 388 (Figs.

3 and 5) removable, after loosening screws 393 tov facilitate positioning of the above-mentioned mechanism in said head. The pin 384, as will be explained later, is operatively connected to the lever 54, which is movable in response to engagement with the cam to raise and lower the shank reducing cutter 4E in the direction of its axis 44.

Threaded into the cutter head 45 is a thumb screw 392 (Figs. 2, 3 and 5) having a conical abutment 394, held in different adjusted positions in said head by a spring-pressed plunger 335 which is slidable in said head and is constructed and arranged to enter any one or" a plurality of recesses 393 in the screw. Housed in a recess 403 of the drive shaft supporting slide 323 and having its lower end in engagement with a removable plate 432 forming part of the cutter head 45, is a spring 434 which constantly forces a conical face 445 of the slide into engagement with the drive: shaft 3I6, and accordingly, the rounding and

roughing cutters

38, 42 in their proper heightpositions in the cutter head by adjusting the thumb screw 392.

After the rounding cutter 38 has been suitably adjusted as above described, the roughing cutter 42 if desirable, may be adjusted in the cutter head 46 to its proper heightwise position with relation to the rounding cutter 38. Such adjustment is quickly effected after the removal of a cover 488 (Figs. 2, 4 and 5) of the cutter head 46, by the use of a screw driver 4|8 which is mounted for sliding movement and rotation in a bracket 4I2 supported for swinging movement in the machine frame 'I8 between an idle position remote from the drive shaft 3I6 anti. ia position above said shaft. When the bracket 4|2 is swung against the action of a spring 4I4 from its idle position to a position over the drive shaft3l6, the screw driver 4I8 is lowered, causing lateral extensions 4I6 of the driver to fit in slots 4I8 (Figs. 4, 5 and 6) in a locking sleeve 420 which, as best shown in Fig. 6 is mounted on the upper end of the rod 338 and has-at its lower end teeth 422 (Figs. 5 and 6) which are forced into -interlocking relation with the teeth 424 at the upper end of the drive shaft 3l6 by a spring 426 (Fig. 6) interposed between a head of the rod and flanges of the locking sleeve, the head of the rod carrying a pin 428 which ts in the slots 4 I 8 ofthe locking sleeve. As the screw driver 4| 8 is rotated the locking sleeve 428 and accordingly the rod 330 rotates with it, said locking sleeve during such rotation sliding heightwise along the rod against the action of the spring 426 and permitting the teeth 422 of the locking sleeve to override the teeth 424 of the drive shaft 3I6. When the locking sleeve 428 is not being rotated it secures, through the interlocking

teeth

422, 424, the rod 338 to the drive shaft 3I6 to maintain the rod in its.

adjusted position upon the drive shaft. The heightwise position of the rod 338 in the cutter head 46 determines the upper limit of movement of the abutment plate 336 (Figs. 4 and 5) when acted on by the roughing cutter 42 elevated by the coil springs 352.

The raised or ineffective position of the shank reducing cutter 48, and accordingly, the lowered eiective position of said cutter, may be varied by raising or lowering the sleeve actuator slide 388 (Figs. 4 and 5) by turning a thumb nut-438 (Figs. 1, 2, 3 and 5) which is threaded onto an upper portion of the pin 384 and has a circumferential groove 432 (Figs. 3 and 5) for receiving trunnions 434 carried by the forward bifurcated end of a bell crank lever 436 fulcrumed on a pin 438 (Figs. 2 and 3) secured to the cutter head 46, said lever having a rearwardly extending arm operatively connected by a rod 448 to the rear end of the cam engaging lever 54. The lever 436 is constantly urged counterclockwise as viewed in Fig. 2 by a COI Spring 442 (Fig. 3) one end is secured to the cutter head 46 and the other end of which embraces the rear arm of the bell crank lever 436. As will be explained later, when the hollow arm 62, and accordingly, the cutter head 46 movevforward to their effective positions determined bythe engagement of the abutment 58 with the edge 52 of the pattern 34 mounted upon the jack 38, the lever 54 by reason of its engagement with the cam-56 swings clockwise as viewedin Figs, -2 .and

4 on the cutter head bracket 5l. When during rearward movement or retraction of the cutter head 46, the lever 54 is disengaged from the cam 56, the lever acted upon by the spring 442 moves counterclockwise as viewed in Figs. 2 and 4, such movement being limited by engagement of a flange 444 (Fig. 2) of the rod 448 with a stop shoulder 446 of the depending bracket 5l of the cutter head. When the flange 444 of the rod 448 is against the stop shoulder 446, the sleeve actuator slide 388, and accordingly, the sleeve 286 which carries the shank reducing cutter 48 are in their raised positions in the cutter head 46.

The cam 56, which will later be described in detail, is shaped and arranged to cause the shank reducing cutter 48 to be lowered along the common axis of rotation 44 of the cutters, with relation to the rounding and

roughing cutters

38, 42 as the shank of the sole moves past the cutter head 46, thereby reducing said shank by roughing cuts to form the beveled and roughened margin 22. When portions of the sole margin other than the shank are passing or traversing the cutter head 46, the shank reducing cutter 48 is in its raised position shown in Figs. 4, 5 and 19, the cam 56 at such time being out of engagement with a button 458 secured to the forward end of and forming part of the lever 54.

When the machine is at rest the jack 38 is positioned as illustrated in Figs. 1 and 11, the rear end of the shank of the sole which is to be operated upon and is supported by the pattern 34 mounted upon the jack, being arranged approximately opposite the axis 44 of the rotation of the

cutters

38, 48 and 42 in the cutter head 46. As the cutter head 46 is swung forward toward the jack 38 to an extent determined by the engagement of the abutment 58 with the edge 52 of the pattern,

'the button 458 of the lever 54 rides down a lower lateral beveledI face 452 (Figs. 2, 4, 10, 15 and 15A) -of the cam 56, when said cam is positioned upon Adotted line position shown in Figs. 4, 14 and 15.

Such movement of the lever 54 causes the shank `reducing cutter 48 to be lowered to its effective position shown in'Figs. 2 and 20, with the result that the cutter operates upon the rear portion of the shank of the sole together with the rounding cutter 38 as the cutter head 46 is moved forward.

The cam 56, which during forward movement of the cutter head 46 rotates the lever 54 clockwise 'as viewed in Figs. 2 and 4, and accordingly,

through mechanism above described, depresses the rotary shank reducing cutter 48 to its effective position on the drive shaft 316, is provided with a slot 456 (Figs. 9, 10 and 15) and a pin receiving hole 458, the faces or

plateau portions

454, 454a of the cam being at and parallel to each other.

As above explained, the lateral margins of the cam 56 are beveled to provide the faces 452 or z4521il down and up which the button 458 of the lever 54 rides as it approaches and leaves the bottom 0r

active face

454, 454a of the cam 56 during forward and rearward swinging moveplaced eitherface 454 or .454a downward upon the pattern holder ill of the jack 34, depending upon whether a left or right sole is to be operated upon, by sliding the cam to the left as viewed in Fig. 9 into a recess 466 of the holder with portions of the cam at opposite sides of theslot 465 straddling a pin 462 (Figs. 9, 10 and 14,) permanently screwed into the holder, a latch pin 464 slidingly mounted in a bore 466 (Fig. 9) of the holder, at such time being depressed to a position -below the hole 458 in the cam. Preparatory to reversing the cam 56 when it is desired to operate on right soles, after operating on left soles, for example, the pin 464- is depressed against the. action oi a spring 466, by sliding a manually operatedV plunger 416 movable in a bore 412 oi the holder, to the right as viewed in Fig. 9 against the action ofv a spring 414 thereby causing a beveled face 416 of the rod to be forced against a correspondingly beveled face 417 of the pin. When the cam 56, which. ts between the upper and lower faces of the recess 465 of the holder [66, is in its operative position in said holder, the plunger is released and, acted on by the spring 474, returns to its normal position shown in Fig. 9, the pin 464 being moved to its raised cam locking position by the spring 468.

When the cutter head 46 swings forward in response to rearward actuation of the lever 166 (Figs. l, 1l and 13), the button 456 of the lever 54 travels down the lower beveled face 452 or 452e of the cam as above explained, and onto the bottom plateau or face 454 or 454m, such course `being indicated by dot-dash lines 418 in Figs. 14

and 15. During such movement the shank reducing. cutter 46 is depressed to its lowered effective position along the axis 44 of the drive shaft SIS, the shank reducing cutter 45 together with the rounding cutter 38 operating upon the sole as illustrated in Fig. The shank reducing cutter 46 when in its lowered eiective position cuts deeper into the sole than does the roughing cutter 42, and accordingly, said roughing cutter has little if any effect in the removal of stock from the shank of the sole.

While thev cam 55 moves with the jack 55 as above described past the cutter head 46, the abutment 56 is in engagement with the edge 52 of the pattern 34, the button 456 of the lever 54 engaging the cam, when leit soles are being operated upon, along portions indicated by dotted lines 425i),v 484:1 (Figs. 14 and l5) and by

dotted lines

482, 482a, for example. The lines 486' and 482 on the one hand, and the lines 486e and 48Ml on the other hand, represent the general paths of engagement of the button 456 with the cam- 56 when the largest and smallest patterns 34 are on the jack 32, and accordingly, the largest and smallest soles are being operated uporr Just before the abutment 54 engages the pattern 34, the brake |62 (Fig. 1) is released and the jack operating clutch 64 is engaged through mechanism described in detail in said Letters Patent 2,081,961 causing rotation of the gear 56 (Fig. 1), and accordingly, movement of the sliding support le together with the jack, to

the left as viewed in Fig. l, the cam 56 engaging the button 454 of the lever 54 along the left end -of the line 486 or 4466i (Fig. 15) which crosses a lower ridge 434 and rides up a trailing beveled face 484 of the cam 56. As the cam 56 moves away from the lever button 45D, the lever 54, acted upon by the spring 442, swings counterclockwise as viewed in Figs. 2 and 4 until the flange 444 on the rod 444 engages the stop shoulder 446. The gear 56 Aabout this time is engaged by the right circular portion oi the rack l52 (Fig. 8) of the carriage 86 causing the jack 36, and accordingly, the sole clamped to the pattern 34 to be rotated in the then stationary support 18 past therounding and roughing cutters 38V and 42 thereby rounding and roughng the margin of the heel end of the sole. Before the opposite end of the heel-breast line 26 of the sole 26 reaches the cutter head 46, an opposite straight portion oi the rack I 52 at such time having reached the gear 156, the lever button 450 travels down a beveled face. 488 and over a lower ridge 496 of the cam 56 thus again engaging the lower face of the plateau 454 of said cam, with the result that the cutter 451s again moved downward into its effective position along the axis 44 of the drive shaft 3i6 to start reducing and roughing the opposite, that is, the outer shank portion oi the sole.

When the jack 30 has slid suiilciently for the outer end of the break line 24 oi the sole 24 to pass the shank reducing cutter 40, the lever button 456 has traveled over a lower ridge 492 and up a lower beveled iace 494 oi the cam 56, said cam leaving the lever button 456, with the result that the shank reducing cutter again moves to its raised ineiective position in the cutter head 46. The jack 36 then continues to cause the iorepart of the sole 20 on the pattern 34 to traverse the

cutters

38, 40 to round and rough the forepart of the sole, after which the lever button 450 rides down a lower bevel. face 496 and across a lower ridge 498 of the cam into engagement with the face or plateau 454 oi the cam 56 before the inner end of the break line 24 of the sole 2D moves past the cutters, the cutter 4!) at such time again being depressed to reduce the inner shank portion of the sole.

The carriage SI1- has secured to it a block 560 (Figs. 8 and 11) which upon completion oi a cycle. of the carriage engages a dog 542 pivotally mounted in the machine frame '16, thereby disengaging the clutch E64 and applying the brake |62, with the result that the carriage comes to rest in the position shown in Figs. 1, 8 and 11. The mechanism for eiTecting this operation is identical with that disclosed in Letters Patent 2,081,961 and need not be further described herein. The carriage. 86 comes to rest when the lever button 456 arrives back at its starting position, the cutter head 46 thereafter being moved to its, rear or retracted position away from the jack 3.6 against the action of the spring 43 by the link 256 actuated by mechanism above referred to.

It will be clear from the foregoing that the paths of engagement of the cam with the lever button 456 diier in accordance with the size and shape of the pattern 34, and accordingly, the sole which is trimmed to an outline determined by the pattern, the paths in the case of a large pattern being indicated by the chai lines 480., 482 and in the case of a small pattern being indicated by the chain lines 485e and 482a as above explained. It will be apparent that when the button 450 of the lever 54 is in engagement with the plateau portion 454 of the cam 56 the shank reducing cutter 46 is in its lowered effective position in the sole, and since the

ridges

492, 498, whichmay be referred to asedges, are inclined generally lengthwise of the paths or loci of engagement 486, 486A,A 452, 482A of the button with the cam it will be clear that the shank reducing cutter is moved toward or away from its elective position to controlthe positions 13 of the forward ends of the shank reducing cuts in `accordance with the sizes of the patterns 34 and therefore the soles to be produced. A cam so constructed and arranged may be defined as a graded cam.

Since the bores or holes |98 in the patterns 34 of different sizes are spaced a constant distance from central lengthwise points of the patterns respectively, it will be apparent that outer ends of the break lines 24 of patterns of different sizes are spaced different lengthwise distances D, D', D from the central portions of said patterns as indicated in Fig. 14. In order to insure that soles 28 of different sizes shall be effectively shank reduced, special attention being given to having the reduced Shanks of the soles extend forward to opposite ends of the break lines of the soles, the beveled faces 494, 496 which may .be referred to as ramps, and accordingly, the

ridges or

edges

482, 498, which are formed be- '.tween the plateau portions 454 and the ramps of the cam, are inclined rearwardly and inwardly of the patterns as above described, said ridges or edges and the elements of the beveled faces 494, 496 being substantially parallel to lines 584,

586 (Fig. 14) which includes substantially lthe outer ends of break lines of a run of sizes of patterns. The

edges

492, 488 may be described as being formed near one end of the cam 56 and as being inclined to the path of movement of 'the cam as well as being inclined to each other and extending toward an opposite end of the cam. By providing a graded reversible cam 56, such as above described, it will be clear that the cam in operating upon left and right soles will engage the button 458 of the lever 54 at the proper time to insure that the shank reducing cuts of soles of different sizes shall extend to but not beyond the break lines of the soles.

In various types of shoes, for example, wom-- ens shoes which have wood heels, the heel seat portion of the sole is reduced after attachment of the shoe to the shoe upper to form a heel seat tab (not shown) and heel seat heel-breast receiving shoulders (not shown) against which the breastv of the heel abuts. Accordingly, in this type of Vshoe the shank reducing cuts may extend rearward of the heel-breast line 26 without being objectionable since the margins of the heel seat portion of the sole are removed during a subsequent .'.i

heel seat fitting operation. It is, however, important that the shank reducing cuts extend only to the opposite ends of the break line 24 of the sole, as above described, in all types of shoe construction. It has been found that many shoe- 5.'

makers desire to vary the forward extent of the shank reducing cut at one side of the shoe without changing the forward extent ofthe shank reducing cut at the other side of the shoe. With this in mind the cam 56 when used in the manufacture of womens shoes having wood heels, for example, may be advantageously made in three parts, lateral portions 5|2, 514 (Figs. 16 and 1'1) of a cam 5| 8 being slidably adjustable lengthwise with relation to a central T-shaped portion 5|6 Aof the cam which will be referred to as the modified cam. The central T-shaped portion 5| 6 of the cam has threaded into it screws 5|9 which pass through elongated slots 528 (Fig. 16) in the side portions 512, 5|4, and may be loosened preparatory to adjusting said side portions with relation to the central T-shaped'portion. To facilitate the proper adjustment of vthe'side portions 5I2, 5|4 relatively to the central T-shaped portion 5|6, said side and central portions J are suitably calibrated as shown at 52|. The central T- shaped portion 5|6 is provided with a slot 522 and a hole 523 corresponding to the slot 456 (Figs. 9, 10 and 15) and the hole 458 of the cam 56.

In order that the shaft '268 (Figs. 1, 4 and 12) through which the

cutters

38, 48 and 42 are rotated, may be stopped to change cutters, for example, without shutting off the motor drive 524 (Fig. 1) of the machine, there is provided between the shaft 268 and a skewed gear 526 secured to the upper end of a shaft 528 (Figs. 1 and 8) corresponding to the shaft 42 in Letters Patent 2,081,961 a clutch 538 (Figs. 1 and 12) which may be engaged or disengaged by moving a hand lever 53|. In driving relation with the skewed gear 526 is a skewed gear 532 (Fig. 12) mounted for rotation on a sleeve 534 which is keyed to a reduced end of the shaft 268 and bears against a collar 536 loose on the shaft and engaging a shoulder 538 of the shaft and an inner race of a ball bearing 540 for said shaft. The skewed gear 532 has formed integral with it a hub 542 engaging the collar 536 and a tapered driving drum 544 arranged in opposed relation to an outer driven drum 546 rotatable upon a spacer 548 which is mounted upon the shaft. The left end of the spacer 548 bears against the sleeve 534 and the right end of the spacer engages a disk 558 secured by a screw 552 to the drive shaft 268. Secured to the sleeve 534 and slidably tting in three circumferentially spaced recesses 554 of the drum 546 are pins 556 which drive the sleeve in response to rotation of the drum 546. Housed in recesses 558 of the driven drum 546 and engaging the disk 558 are springs 568 which constantly urge the driven drum 546 into forced engagement with the driving drum 544.

The driven drum 546 has secured to it by one or more screws 56'2, a plate 564 which may be regarded as part of the drum, said plate forming with the major portion of the drum a circumferential groove 566 in which fit a pair of fingers 568 secured by screws 518 to a yoke 512 formed integral with a shaft 514 which slidably ts in a cylindrical bore 516 of the machine frame 18 and has secured to it by one or more screws 518, a cam 588. The yoke 512 is held against rotation by engagement of its lateral portions in longitudinal slots 582 formed in the inner face of the machine frame 18. The guiding of the yoke 512 in the direction of the axis of rotation of the shaft 268 is assisted by a pin 584 secured to the frame and slidably fitting in a bore 586 of the yoke. Loosely mounted upon the shaft 514 of the yoke 512 and interposed between the frame l18 and the cam 588 is an actuating wedge 588 (Figs. 1 and 12) to which the manually operated handle 53| is secured. When the handle 53| is in the position shown in Figs. 1 and 12 the yoke 512 is permitted to assume an active position enabling the springs 558 to force the outer drum 546 against the inner drum 544 with the result that the skewed gear 532 drives, through the inner drum 544, the outer drum 546, the pins 556 and the sleeve 534, the shaft 268. When it is desired to stop the shaft 268 preparatory to head d striking i 5 plunger 592 which is slidably housed in the machine frame lll and is adapted to register in either vone of two recesses 584 (only one shown) of the wedge.

In order to insure against the abutment 55 (Figs. l to 5 inclusive) carried by the. cutter :le pattern 34 with too much force during forward swinging movement of the arm 52, the cutter head 4i; carries a dash pot 596 (Figs. 2 and il) comprising a piston 50G which is constantly to the lei-t as viewed in Fig. 11 by a spring 6:32. The piston 596 of the dash pot 5% carries a relier 554 constructed and arranged, upc-n forward movement of the arm 52 to engage a face of a check cam 555 which is pivotaliy connected to a. lever dl? and biased for clockwise movement as viewed in Fig. 11 by a spring tit, said cam being guided for movement by the lever @i2 and the Xed pin 248 which passes through aslot of the che-ck cam. The

forward end of the lever s l2 is secured to a feeler Eid having a face 5l@ constructed and arranged to engage the edge of the pattern 3d on the lack 3G. When there is no pattern 34 in the machine the various parts just described are in `their positions illustrated in Fig. 1l, countercloclrwise movement or the feeler 5&4 being limited by the engagement of the right end of the slot 5l8 with the pin 248, the feeler at such time being spaced slightly from the left pin 83 of the holder E95.

Should the clutch 55d (Figs. 1 and 11) be tripped by swinging the hand lever it (Figs. 1, l1 and 13) forward, when there is no pattern 34 on the jack 3c, it will be clear that if no safety mechanism were provided, the cutter head 46 would swing forward under the action of the spring d8 and strike the jack.. To insure against collision between such parts and also to prevent the tripping of the clutch H55 when there is no pattern in the machine, said machine is provided with the following safety mechanism. Such mechanism comprises a stop ringer 520 which is pivotally 'mounted upon the pin 243. and is constantly urged clockwise as viewed in Fig. l1 by a leaf spring 522, one end of which bears against the finger and the other end of which is secured to the machine frame l0. When there is no pattern Sd upon the holder ll, the right end of the slot @is in the check cam 528 is in engagement with the stop pin 248 as illustrated in Fig. 1l, a lug S243 secured to the bottom of the check cam being in a position to be engaged by a hoff-shaped projection 625 of the stop finger 525.

The hand lever 55 pivoted upon a pin 62S secured to the machine fra i e 'lil and has pivotally connected to it, above said pin, a rod S30. A lower biurcated end of the lever iBS carries a pin @Si extending through a slot E32 formed in a link 533 which is pivoted at its rear end to a slide 635 reciprocable in the machine fra-me l5. The slide 535 is operatively connected,

through mechanism disclosed in Letters Patent 2,G8l,9f5l, to a pawl or datent (not shown) which corresponds to the pa-wl locking dog or detent 45d disclosed in said; Letters Patent and upon release of which the cutter head carryingv arm 62 is permitted to swin forward under the action of' the spring fill. The safety rod 630 carries a pin B513 (Fig. il) extending through a slot 636 at the right end of a bell cra-nk lever 538 fulriuned on a pin 46 secured to the main frame, the lever being constantly urged counter-clockwise by a spring-pressed plunger 642movable in a.

bore of' a boss of said iever. Pivotally connected to the left arm of the bell crank lever 538 is a, link M4 having at its forward end a slot 546 through which passes a pin $58 carried by the finger 62|] which, as above stated, has the hookshaped portion 525. When there is no pattern 3ft on the holder iilfl, and accordingly, the lug 524 on the check cam 558 is in its position shown in Fig. l1 in front of the extension 525 of the ringer 620, the rod 532, and accordingly, the lever itt cannot be moved a substantial distance forward, it being possible to move the lever forward until the pin 636 engages the forward end of the slot 63 in the bell crank lever 38. Accordingly, the slide 635 is prevented from being moved rearward suiciently to operate the abovementioned pawl corresponding to the pawl 664 disclosed in Letters Patent 2,081,961.

When the check cam 5&8 is moved to the right, as viewed in Fig. l1 by reason oi a pattern 34 having been positioned upon the holder |00, the lug 624 slides from its position in front of the projection 626 of the finger G25 so that the hand lever H56 may be moved suiliciently forward to actuate the pawl, which corresponds to the pawl 454 of said Letters Patent 2,681,961, thereby starting the machine.

When the cutter head carrying arm 62 is moved forward by the action of the spring 48, the face 506 of the check cam 50S is engaged by the roll 604 of the piston 6&5 to insure that the abutment 5E carried by and, in eiect, forming part of the depending bracket 5l of the cutter head 46, shall be eased into engagement with the edge face 52 of the pattern 34. The check cam 608 is moved into diierent operating positions in accordance with the size of the pattern 34, the construction and arrangement being such that the checking effect of the cam 508 on the cutter head 46 shall be approximately the same irrespective of the size of the pattern.

In order to insure against the cutter head carrying arm 62 swinging forward sufficiently to cause the cutter head to collide with the jack 45 39V, should the pawl 464 of the machine disclosed 55 the .machine and the lever ISB is moved forward to start the machine through its operative cycle, the stop finger 620 is swung counterclockwise, as viewed in Fig. 11, into such a position. as to be clear of the path of movement of the lug 654 on the cutter head 46.

In the machine disclosed in Letters Patent 2,081,961 the cutter head 46 is moved to its retracted or idle position after movement of the jack 30 has ceased, by a strap (not shown) mounted upon a shaft. As above explained, in the present illustrative machine, as in the machine disclosed in Letters Patent 2,219,341, the cutter head 4B is moved to its retracted position by the link 256 (Figs- 2, 4 and 11) the forward end of which is pivotally connected to the cutter head 46 and the rear end of which is pivotally connected to the. arm 254 secured to the upper end of the shaft 252. In view of the fact that mechanism for moving the cutter head 46 rearward from its operative position and for limiting the speed of the cutter head toward its forward loperating position is disclosed in the above-men- `the cutter head 46, is held in its rearward position against the action of the spring 48 (Figs. l and 11) by the above-mentioned pawl 464 disclosed in Letters Patent 2,081,961, the clutch |64 being disengaged and the brake |62 holding the jack against movement.

The treadlel |26 is then depressed against the action of the springs |25, |40 to raise the clamp 32 preparatory to placing a block sole on the pattern 34 mounted upon the jack 30. The treadle |26 is thereafter released permitting'said block sole to be clamped by spring action against the pattern 34. The operator next swings the hand lever |66 forward to release the pawl 464 disclosed in said Letters Patent 2,081,961, withthe `result that the arm 62 swings forward toward the jack 30 by the action of the spring 48 until the abutment 50 engages the pattern 34, the dash pot 596 carried by said arm insuring' against the cutters carried by the cutter head 46 suddenly biting into the sole and also insuring against the abutforce. The rest position of thejack 30 is such that the

cutters

38, 48 and 42 initially move forward against the rear shank portion of the sole.

After the abutment 50 of the cutter head 46 has moved into engagement with the edge of the pattern 34, the clutch |64 controlled by mechanisin described in detail in said Letters Patent 2,081,961 is engaged, with the result that the shaft |54 is rotated and the jack is caused to slide and rotate as above described with the result that the entire periphery of the sole clamped against the pattern is traversed past the

cutters

38, 40 and 42, the block 500 on the carriage 88 engaging the dog 582 as the jack approaches its rest position to cause the clutch |64 to be disengaged and the brake |62 to be applied when the jack has completed its cycle. rest, the arm 62 is automatically swung rearward to swing the cutter head 46 and accordingly the

cutters

38, 40 and 42 to their retracted starting positions. The operator then depresses the treadle |26 to permit the operator to remove the When the jack has come to ment striking against the pattern with excessive v claim as new and desire to secure by Letters Pat' ent of the United States is:

a clamp for forcing a block sole against the pattern, means for moving the clamp with relation'" position in engagement with the sole as predeterrotation about a common axis, means for sliding? and rotating the holder and the clamp to move the pattern and accordingly the sole in a predetermined path, an abutment mounted upon the carrier, means for moving the carrier towardthe holder and for yieldingly forcing the abutment .holder for a block sole, a cutter head, a cutter rotatably mounted in the cutter head, means for effecting relative movement of the holder and f' the cutter head to cause relative traversing of the cutter and the .marginof the sole, a movable graded cam, and mechanism comprising an element 'which is moved in and out of engagement with the cam and the path of engagement of which with the cam during relative movement of the holder and the cutter head Varies in accordance with the desired size of the sole being operated upon, said mechanism being responsive to vmovement; of the cam for moving the cutter relatively to the cutter head to and from an operative position at predetermined times in accordance with the desired size of the sole and accordingly said path of engagement to cause the sole to be reduced at selected localities during relative movement of the holder and the cutter head.v

3. In a machine for operating upon soles, a. holder. for positioning and supporting a pattern, a clamp for forcing a sole against the pattern, a cutter head, three or more cutters rotatable about a'common axis in the cutter head, an abutment mounted upon the cutter head, means for rotating the cutters, .means for yieldingly urging the cutter head in one direction to force the abutment against an edge of the pattern to position the cutters in predetermined relation to said edge, means for sliding and rotating the holder to cause the margin of the sole to traverse the cutters to op- Verate upon the sole, and means comprising a cam for movement about an axis, said cutter head being movable towardand away from the pattern and being held yieldingly against said pattern as the pattern and the sole are moved with the jackLa `graded cam movable in timed relation with the ljack, and mechanism'movable with the cutter head, said mechanism comprising an element which is engaged by different portions of the cam, the loci of engagement of the element and the cam during movement of the jack varying in accordance .with the size of the pattern in order to move the cutter in the cutter head lengthwise of its axis of rotation Ato l and from an operative mined portions of the patterns traverse the cutter head.

`5. In Aa machine for operating upon soles, a

head,`a"plurjility of cutters rotatable about a comi monaxis in the cutter head, said cutterY head