US2530590A

US2530590A - Heel breasting machine

Info

Publication number: US2530590A
Application number: US78172A
Authority: US
Inventors: White Percy; Keall Frank Bycroft
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1948-03-04
Filing date: 1949-02-24
Publication date: 1950-11-21
Anticipated expiration: 1967-11-21

Description

Nov. 21, 1950 P. WHITE ETAL 2,530,590

HEEL BREASTING MACHINE Filed Feb. 24, 1949 8 Sheets-Sheet l h g 5&9 J63 I. g J7 fi m 530 [raven 0119 I Pergy Whiz e Fran Nov. 21, 1950 P. WHITE ET AL HEEL BREASTING MACHINE 8 Sheets-Sheet 2 Filed Feb. 24, 1949 Nov. 21, 1950 P. WHITE ETAL HEEL BREASTING MACHINE 8 Sheets-Sheet 5 Filed Feb. 24, 1949 Berg h/l'u'ze Frank 5. KeaZZ Nov. 21, 1950 P. WHITE ET AL 2,530,590

HEEL BREASTING MACHINE Filed Feb. 24, 1949 8 Sheets-Sheet 4 [nve nfons Pergy h izdze Fm 22k 5 Kea if Nuv- 1950 P. WHITE ET AL 2,530,590

HEEL BREASTING MACHINE Filed Feb. 24, 1949 8 Sheets-Sheet 5 Inventors Pergy la lzife Frank 5. Keall Nov. 21, 1950 P. WHITE ETAL HEEL BREASTING MACHINE 8 Sheets-Sheet 6 Filed Feb. 24, 1949 [nve niom' Pergg h/ha'ze Frank B. KeczZZ Nov. 21, 1950 P. WHITE ET AL 2,530,590

HEEL BREASTING MACHINE Filed Feb. 24, 1949 8 Sheets-Sheet 7 F1313 Inventors Pcrg White Fz a 71k 5. K64

Patented Nov. 21, 1950 gasses HEEL BREASTING MACHINE Percy White, Leicester, and Frank Bycroft Keall, Swanage, England, assignors to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application February 24, 1949, Serial No. 78,172 In Great Britain March 4, 1948 24 Claims.

This invention relates to machines for use in the manufacture of shoes and is illustrated as embodied in a machine for breasting unattached heels.

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

In the accompanying drawings,

Fig. '1 is a perspective view of the illustrative machine;

Fig. '2 .is :a side view of the upper portion of the machine certain parts of which have been omitted;

Fig. 3 is a section on line III-III of Fig. 2;

Fig. 4 is a view on .line IV-IV of Fig. 2 showing portions of mechanism for rotating a heel carrying turret of the machine;

Fig. 5 is a view similar to Fig. 4 showing the turret rotated through half a revolution from its position shown in Fig. 4;

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

Fig. '7 is a plan view of the turret on line VIIVII of Fig. 2;

Fig. 8 shows the turret partly in side elevation and partly in section on line VIII-VIII of Fig. 7; r

Fig. 9 is a section on line IX--IX of Fig. 8;

Fig. 10 is a section on line X--X of Figs. 1 and '2 showing driving mechanism comprising a clutch of the illustrative machine, a bolt of the clutch being shown in a position 90 around an axis of a driving mechanism shaft from its normal stopping position;

Fig. 11 shows in front elevation portions of clutch controlling mechanism of the machine;

Fig. 12 is a side view, partly in section on line showing heel-clamping mechanism of the ma chine;

Fig. 16 is .a section on line XVIXVI in Fig.

Fig. 17 .is a section on the line XVII-XVII in Fig. 2.;

Fig. 18 is a plan view of heel ejecting mechanism oi the machine; and

Fig. 19 is an elevation of the parts of the heel ejecting mechanism shown in Fig. 18.

The illustrative machine comprises a base 20 (Fig. 1) on which is secured a box-shaped head 22 carrying driving mechanism of the machine. A laterally extending horizontal driving shaft 24 is rotatably mounted in the head 22 and has keyed to its left end portion, as viewed from the front of the machine, a hand wheel 26 (Figs. 1, 10 and '11) by means of which the shaft may be rotated.

The driving shaft '24 has rotatably mounted on it a pulley 28 which is driven from any suitable source of power. Secured to and extending from the pulley 28 at opposite sides of its axis of rotation are studs 30 (Fig. 10) one of which in order to cause the machine to be driven engages a sliding clutch member or bolt 32 mounted in a sleeve 34 (Figs. 10 to 13) which is rotatably mounted on the driving shaft 24, when the bolt is allowed to be moved to an advanced position axially of the driving shaft towards the pulley by a compression spring 36. A lever 38 (Figs. 10 and 1.3) pivoted on a stud 461 (Fig. 13) secured to the head 22 is operated by a treadle 42 (Fig. 1) to allow the bolt 32 to be moved by the spring 36 from a retracted position into the path of the studs 30 thus causing the machine to be driven. When, as will be explained later, the lever 38 withdraws the bolt 32, a brake 44 (Figs. 10 and '13) hereinafter described operates to stop the machine.

The lever 38 has secured it to a wedge block 4.6 which, when the lever is in the position shown in Fig. '13 to stop the machine, is engaged in a recess 48 (Figs. 10, 11 and 13) in the bolt 32 and causes said bolt to be withdrawn to the right, as viewed in Fig. 10, from the path of the studs 30 of the pulley 28. The lever 38 has secured in it a pin 51) which engages in a slot 52 in a latch lever 54. A compression spring 56 housed in the latch lever 54 normally holds one end of the slot 52 against the pin 5t, as shown in Fig. 13. The latch lever 54 is connected to the treadle 42 by mechanism comprising a rod 58 (Figs. 1, l0

and 13) which is moved upward by a compression spring Ell (Figs. '1 and 13), said leverhaving a recess 62 in whichfits a stud 64 secured to the clutch lever 38. The pins 38 and the bolt 32 may be described as constituting parts of a clutch which is manually engaged by depressing the treadle 42.

'When the treadle 42 is depressed by the operator the wedge block is withdrawn from the recess 48 and the bolt .32 is moved ,by its.

spring 36 into the path of one or the other of the studs 30 causing the machine to be driven. Just after the machine begins to operate an arm 66 (Figs. and 13) secured to a shaft 68 rotatable in the head 22 is moved counterclockwise (Fig. 13) by a cam 10 to move a face 12 (Fig. 13) of an arm 74 secured to said shaft just above a projection (6 on the clutch lever 38 to hold said lever in the position to which it has been moved by the clutch treadle 42. The arm I4 has secured to it an arm 18 a rounded end portion of which is arranged to engage the latch lever 54 as the arm 66 is moved counterclockwise and to move the latch lever lengthwise against the action of the spring 56 so as to move the recess 62 away from the stud 64 and thus release the clutch lever 38 from the treadle 42 which may be held depressed until the machine stops.

When the cam iii allows the lever 65 to be moved by a spring 811, (Fig. 13) opposite ends of which are connected to the lever and to the head 22, in a clockwise direction (Fig. 13) the face I2 of the lever 6'5 is moved away from the projection It on the clutch lever 33 and allows the clutch lever to be moved in a clockwise direction by a spring 82 connected thereto and to the head 22, thereby moving the wedge block 46 against the clutch bolt 32 and causing said bolt to be withdrawn from engagement with one of said studs 3%! and accordingly the machine to stop although the clutch treadle 22 may be held depressed. The brake member i i (Figs. 10 and 13) is pivoted on the stud 4B and is urged by a tension spring 84 connected thereto and to the head 22 against a flange 85 on the sleeve The clutch lever 38 has projecting from it a lug 88 (Fig. 13) which, when the clutch lever is moved counterclockwise (Fig. 13) to allow the clutch bolt 32 to be moved into the path of the studs 30 and the machine to be driven, actuates a brake-controlling lever 96 which is pivoted on a pin 92 secured to the head 22 and moves, through an adjustable screw 9 in the brake 44, the brake away from the flange 86. When the clutch bolt 32 is moved to the right (Fig. 10) by the wedge block 4t and accordingly the clutch is disengaged, the tension spring 82 causes the brake A l to be forced against the flange 3% of the sleeve 34 to stop the machine.

When the machine is manually turned over for purposes of adjustment or testing by use of the hand wheel while the pulley 26 is being driven it is necessary to release the brake (i i and to prevent the clutch bolt 32 from moving into the path of the studs 39. The brake is is released by depression of the clutch treadle 52 in the same manner as when causing the machine to be driven by power. To prevent the clutch bolt 32 from moving into the path of the studs said bolt has formed in it a recess 95 (Figs. 10 and 12) into which is moved a detent 38 which is pivoted on a pin lei! (Fig. 12) secured to the sleeve 34 and is constantly urged away from said bolt by a compression spring I82. The detent 93 is arranged to be moved into the recess 96 to hold the clutch bolt 32 from moving into the path of the studs 33, by a ring Id i (Figs. 10, 11 and 12) having an internal beveled face Hi6 which engages the detent 98 and moves it into the recess 98 when the ring is moved toward the pulley 28. The ring Ill has secured to it trunnions IE8 fitting in bores of a yoke i 58 which is secured on a spindle H2 rotatably mounted ina bracket I l secured to the head 22. The spindle H2 has also secured on it an arm U (Figs. 10 and 11) having on its outer end a roll H8 which engages in a cam slot I26 in one arm of a hand lever I22 pivoted to the head 22. The ring id i has'secured to it rigidly an arm i2 3 pivotally connected to a link I26 which is mounted on a pin E28 carried by the bracket H 3. When the hand lever 122 is moved clockwise (Fig. 12) the arm IE8 is raised and the ring m l is moved to the left (Figs. 10 and 1 the beveled face Iilt thereon causing the detent 38 to be moved into the recess 96 in the clutch bolt 32. When thereafter the treadle 42 is depressed the wedge block 45 is moved away from the recess 48 on the clutch bolt 32 and the brake M is released. The clutch bolt 32 however is prevented from moving into the path of the studs 33 by the lever detent 98 and the driving shaft 24 may be rotated by means of the hand wheel 25. The arrangement of the yoke IIQ, the link I23 and the arm I2 1 rigid with the ring causes the ring IM- to be moved substantially in a straight line Without turning about the trunnions I88.

Secured to the sleeve 35 at its right end (Fig. 10) is a sun gear I39 which is rotatably mounted on the shaft 2 2- and which is driven by the sleeve and meshes with three planet gears I32 (only two shown) rotatably mounted on a planet gear carrier or spider I36 secured to the driving shaft 2 said planet gears I32 meshing with an internally toothed ring I33 secured to the head 22. The pulley 28 rotates four times for every rotation of the driving shaft 22.

The driving shaft 25 has mounted on it a crank I38 (Figs. 2 and 10) which, as will hereinafter be described, operates a breasting knife Mil (Figs. 1, 2 and 9) of the machine. The driving shaft 2% has keyed to its right end portion (Fig. 10) a spur gear i 32 (Fig. 10) which meshes with a spur gear Hit secured to the right end portion of a countershaft I45 (Figs. 19 and 13) to which is secured the cam Hi. The counter shaft I i-6 is rotatably mounted in the head 22 and lies rearward of and higher than the driving shaft 24, the spur gear I 54 having a diameter twice that of the spur gear M2 so that two revolu tions of the driving shaft 2 2 cause the countershaft M3 to rotate once. The cam ii! on the countershaft its through mechanism above described prevents the clutch from being disengaged until, at the end of the machine cycle the driving shaft 25 has made two revolutions and the countershaft Hi6 has made one revolution.

A bracket i 58 (Figs. 1, 2 and 3) for supporting the breasting knife see and portions of its guiding and operating mechanism is secured by bolts ifiii to the rear top portion of the head 22, said bracket having formed in it a guideway I52 fora carrier or knife carrying slide 554. The guideway E52 extends upward and rearward of the machine at an angle of about one hundred and five degrees to the horizontal. The knife slide I56 has a forwardly projecting portion 556 in which are formed two parallel arcuate recesses or grooves I58 (Fig. 3) extending parallel to and spaced widthwise of the guideway I'ii2. Each recess I58 has journaled in it a self-adjusting segment block H58 which can turn in its associated recess about an axis around which said recess is centered. At the lower end of each segment block ISO is a flange E62 (Figs. 2 and 3) which extends beneath and is engaged by the lower end of the forwardly projecting portion I56 of the knife slide I54. The upper end of each Segment block set has formed on it a boss H64 a rear portiQ g of Which extends over and engages a face on the top of the forwardly projecting portion I56 of the knife slide I54, the blocks being caused by their flanges and bosses to move upward and downward with the knife .slide I54.

The breasting knife I46 is curved laterally to suit the desired lateral curve desired to be imparted to the breast face of a heel I65, (Figs, 2, "7 and 8'), said knife being clamped against the front faces of the segment blocks I60, which are free to turn in the recesses I58 to accommodate themselves to the knife. Screws I66 which are threaded through the bosses I64 on the segment blocks I66 and which engage the top. of the knife I46 and have on them locknuts I68 support the knife against upward displacement with relation to the knife carrying slide 154.

The breasting knife I46 is clamped to the seg ment blocks I60 by an equalizer bar or block I18 (Fig. 3) having rearwardly extending rib or salient portions I12 which extend. lengthwise of the segment blocks I66 and engage the knife opposite the lengthwise median portions of said blocks.

The equalizer bar I16 has an arcuate front face which fits in a complemental arcuate recess I14 in a knife clamping arm or lever I'I6 which supports said bar. The knife clamping lever I16 is pivoted at its right end portion (Fig. 3) on a pivot pin I18 mounted upon the knife carrying slide 554. The left end portion (Fig. 3) of the knife clamping lever I16 is bifurcated and passes above and below aforwardly extending lug I86 of the knife carrying slide I54. The lug I86 has extending horizontally through it a passage I62 extending laterally of the machine, said passage having at its right end a frusto conical recess I83 for receiving a nut I84 through which is threaded a bolt I66. The bolt I86 has slidingly mounted on it a wedge block I88 and formed integral with it a head I96 from which projects a handle I92. The front face I94 of the left end portion of the clamping lever I16 is curved and engages the rear face of the wedge block I88, the front face of said block engaging a curved rear face I96 of the lug I86. When the bolt I86 is screwed towards the right (Fig, 3) the wedge block I88 bears against the faces E66, I64 of the lug I86 and the clamping lever I16 respectively and thrusts the left end portion of said lever towards the knife carrying slide I54 and the equalizer bar I16 carried by the clamping lever against the knife I46 to clamp the knife against the segment blocks I60. The equalizer bar or block I16 may swivel in the recess I14 in the clamping lever I16 to accommodate itself to the curvature of the knife M6. The knife carrier U64 and the knife clamping lever I16 may be described as having interlocking clamping means for securing the knife to the carrier.

The knife carrying slide 154 has slidingly mounted in a bore I68 (Fig. 2) of a rearwardly extending portion 266 thereof a knife-actuating rod or slide 262 which is parallel to the slide I54. The lower end portion of the rod 262 is pivotally eonnectedto an upper end portion of a connecting rod 264 the lower end portion of which is connected to the crank I38 (Figs. 2 and 16) on the driving shaft 24. As above explained, the driving shaft 24 rotates twice during each cycle of the machine and accordingly the knife-actuating rod 262 which is constantly moved during the power cycle of, the machine moves downward and upward twice during said cycle.

Since it is desired to cause the breasting knife I46 to operate only once during each power cycle of the machine, said machine is provided with means for. causing the. knife. to. be. actuated only during the second descent of the knife-actuating rod 262 during each cycle. Such means comprises a pawl 266, which is pivoted on a pin 268, secured to the knife carrying slide I54 at the rear of the knife-actuating rod 262. The upper end of the pawl 266 is arranged to be engaged by a notch 2I6 in the knife-actuating rod 262 during the second descent of each cycle of said rod. the construction and arrangement being such that the rod 262 during said second descent, through the pawl 206, moves the knife carrying slide I54 downward against the action of a tension spring 2&2 the upper end of which is secured to the bracket I48 and the lower end of which is secured to the slide 64. When the knife carrying slide I54 is held by the spring 2 I 2 in its raised position the rearwardly extending portion 286 of the slide is held in a raised idle or retracted position against a stop or stop face 2I4 on the knife bracket I48 and the relative heightwise position of the upper end of the pawl 2'36 and the notch in the knife actuating rod 262 is such that when the said rod is at the upper end of its path of movement the pawl can just enter the notch. The upper end of the pawl 266 is urged towards 1e rod 262 by a compression spring 2 I6 between a depending arm of the pawl and the knife slide.

The pawl 266 is held out of engagement with the notch 2H3 in the knife actuating rod 262 during the first downward stroke of the rod, by a cam lever 2!!! (Figs. 1 and 2) the upper end of which engages the rear face of a lower arm of the pawl. The cam lever 258 is secured to a horizontal pivot pin 22%: mounted in bores of the bracket I48. Mounted upon the lower end portion of the cam lever 2 I8 is a cam roll 222 which engages a cam 224 secured to the countershaft I46. The cam roll 222 is held against the cam 224 by the compression spring 2I6 which urges the upper end of the pawl 266 towards the knife actuating rod 262 and, through the depending arzn of the pawl, the cam roll against the cam 22 When the illustrative machine is in its stopped position shown in Fig. 2 the pawl 286 is held by the cam lever 2H3 out of engagement with the notch 2 I6 in the knife actuatin rod 292 and when said notch has, during the first downward movement of the rod in the cycle of the machine passed below the upper end of the pawl, the earn 224 and cam lever 2i 8 allow the upper end of the pawl to be moved into engagement with the rod. During the next upward movement of the knife actuating rod 262 the pawl 266 engages in the notch 2I0 just as the rod is reaching its uppermost position so that during the next descent of the rod the knife slide 554 and accordingly the breasting knife E26 are moved downward. During the next upward movement of the knife actuating rod 262 the tension spring 252 which raises the knife carrying slide I54 holds the pawl 206 in the notch 216 so that the slide can only be moved upwardly at the same speed as the rod and not merely by the tension spring which might cause said slide to be moved upward too fast. Just before the knife actuating rod 262 reaches its uppermost position the cam 224 and the cam lever 2l8 cause the pawl 266 to be withdrawn from the notch 2m in the rod and the tension spring 2I2 moves the knife carrying slide I54 to its fully raised position against the stop face 2.I4.

There is pivoted on a pin 226 secured to. the bracket I 48 a hand lever 228 which has a forwardly extending arm terminating in a handle 230. The rear end of the hand lever 228 has formed on it a face 232 which when the pawl 228 engages in the notch 2H) is arranged to engage a face 234 on the front of an arm 236 secured to the pivot pin 229. The faces 232, 232 are so constructed and arranged that when the handle 230 of the lever 228 is depressed the arm 238 and cam lever 2E8 are moved counterclockwise (Fig. 2) by the engagement of said faces to cause thepawl 286 to be withdrawn from the notch 2H) in the knife actuating rod 282. If it is desired to cause a heel carrying turret 238 (Figs. 1, 2, 4, 5, 8 and 9), hereinafter described in detail, to be rotated without the breasting knife M8 being operated, the operator by means of the hand lever 228 causes the pawl 28 to be held out of engagement with the notch 2i!) in the knife actuating rod 282 while the machine operates, or, if the operator wishes to stop the descent of the knife after the machine has commenced to operate, e. g. if he notices that the heel E65 on the turret 238 is not positioned properly thereon, he may depress the hand lever and cause the pawl to be disengaged from the notch whereupon the knife slide l will be raised by the spring 2i2 while the rod 282 continues idly to descend.

The countershaft M6 (Figs. 10 and 13) has secured to its right-end portion, as viewed from the front of the machine, a crank disk (Fig. 2) to which is secured a ball-ended crank pin pivoted to the upper end of a link 246 the lower end of which is pivoted, by a universai connection 248, to an arm 258 which is secured to the rear end portion of a horizontal rockshaft 2522 (Figs. 2, 4 and 5). The rockshaft 252 is rotatably mounted in bearings 254 of the box-shaped head 22. The rockshaft 252 has secured to its front end portion a gear segment 258 which meshes with a bevel gear 258 (Figs. 2, 8, 4, 5, 6, 18 and 19) formed integral with a sleeve 288 rotatably mounted on a hollow shaft 282 mounted in bearings 2B4 (Figs. 2 and S) of the head 22. The shaft 282 extends upward and rearward at an angle of one hundred and five degrees to the horizontal, and is parallel to the knife slide guideway I52 in the bracket 38. The sleeve 282 has projecting laterally from its lower end portion a lug 266 (Figs. 4, 5 and 6) into which is threaded a stud 288 extending parallel to an axis 352 of the sleeve. The stud 2538 has pivoted on it a pawl 278 arranged to engage first one and then the other of two teeth 222 (Figs. 4 and 5) on a collar 2M (Figs. 6 and 8), which is positioned between the sleeve 26% and the lower of the bearings 264 and is secured to the hollow shaft During each rotation of the countershaft the gear segment 2% is rocked to and fro once through such an angle that, during its movement, the pawl 27E! rotates the hollow shaft 2 82 through half a revolution and the pawl returns idly in readiness to cause the hollow shaft to be moved through another half revolution. As will be explained later, during the idle return movement of the pawl 21 the turret 238 is held stationary and the breasting knife [48 completes its heel breasting stroke.

The upper end portion of the hollow shaft 282 has secured to it the heel carrying turret 238 (Figs. 1, 2, 4., 5, 8 and 9) which is supported by the upper bearing 2% in the box-shaped head 22. The turret 238 has adjustably mounted on it, one at each side of the hollow shaft 282, two heelsupporting and clamping units 228 (Figs. 7 and 8) which comprise heelsupporting blocks 218 (Fig. 14) and will be hereinafter described.

A wooden cutting block 280 (Figs. 7, 8 and 14) against which the breasting knife 14!] cuts is secured in each heel-supporting block 278 which is mounted in an undercut arcuate guideway 282 (Figs. 3 and 9) formed in the turret 238. When the heel I (Figs. 2, 7 and 8) is positioned in the machine, its top lift rests partly on the wooden block 288. Each arcuate guideway 282 extends inward and upward below a work supporting surface 284 of the heel supporting block 218 and is substantially concentric about a line or axis passing, tangential to the path of rotation of the turret, through a point 288 (Fig. 8) which is located on said surface and at the end of the breasting stroke of the knife i4!) is engaged by the center of a cutting edge 288 (Figs. 1, 2 and 8) of the knife. The heel supporting blocks 278 may be adjusted along the arcuate guideways 282, pivoting meanwhile about said point 286, to vary the angle at which the breast of the heel E is held with relation to the path of movement of the breasting knife M8, thereby determining the angular relation between the tread face and the breast of the breasted heel. Since the position at which the cutting edge 288 of the breasting knife M8 engages the wooden cutting block 2% remains constant irrespective of angular adjustment of the heel supporting block 228, said position will not require heightwise adjustment. Furthermore, a breast gage 2% (Figs. 2, 7 and 8) which is hereinafter described and is carried by the heel supporting block 218 and against which the breast of the top lift of the heel I55 to be breasted is positioned, will not require adjustment when the angular position of the heel supporting block is altered since the position of the heel relatively to the gage will remain constant irrespective of such angular adjustment of the block.

The heel supporting block 218 is locked in the arcuate guideway 282 by a bolt 292 extending through the turret 238 and having a head 28:? (Figs. 8 and 9) which engages a block 295 on the bolt. The block 295 has on it a face 298 (Fig. 9) which is inclined in relation to the axis of the bolt and engages a face 38 on the turret 238. The upper face 382 of the block 298 engages a curved face 324 on the heel supporting block 238. The bolt 282 is tightened by a nut 35 (Figs. 2, 8 and 9) which is threaded onto the bolt, engages the turret and causes the block 225 to be wedged between the faces 888, 824. When the nut 306 is loosened the heel supporting block 228 may be adjusted angularly in the guideway 222, there being a scale and indicator arrangement 388 on the turret 238 and block 282 to show in degrees the amount of adjustment.

The wooden cutting block 282 is square in cross-section and is complemental to and is inserted in an opening 310 (Figs. 7, 8 and 14) evtending downwardly from the surface 284 of the heel supporting block 212. The cutting block 288 when its upper or operative surface becomes worn by the breasting knife I48 may be removed from the opening 3H) and replaced with any of its sides up thus providing four fiat surfaces against which said knife may cut. The wooden cutting block 28%) is supported by a horizontally adjustable carrier or elevating member 3 !2 (Fig. 14) which has inclined faces or ramp portions 3 i 3 in engagement with complemental faces of the heel supporting block 218 and which may be described as wedge shaped. A screw 3 It is rotatably mounted in vertical slots of the heel supporting block 278, is threaded into the block carrier 2i2 and has an end engaging in a vertical groove of a bracket 3|! secured to the block. By rotating the screw 3 I 8 the block carrier 3I2, may be moved alongthe screw relatively to the cutting block 288 and its inclined face 3 I4 will cause the cutting block to be raised, or lowered to bring its upper surface level with the upper surface of the heel supporting block 218.

The work supporting surface 284 of the block 218 has on it the breast gage 2% (Fig. '7). The breast gage 29:",- comprises a relatively thin metal plate which has init three slots 3H8. Passing through each slot is a headed screw 32% (Figs. 2, 7 and 8) secured in the heel supporting block 218 so that the breast gage 290 may be moved forward or rearward when the heel supporting block is at the front of the machine, i. e. in a heelreceiving or loading position. A rear or work engaging edge 322 of the breast gage 293, against which edge the breast of a top lift of the heel IE is to be positioned by the operator, is curved to correspond to the curvature of the knife edge 288.

The breast gage 299 is urged forward by a tension spring 32 connected to a hook 326 in the gage and to one of the screws 323 in the heel supporting block 228. As each heel supporting block 2Y8 is moved into its loading station by the rotation of the turret 23B, a front edge of the breast gage 290 travels along a cam face 328 on a cam 330 (Figs. 1;, 2 7, and 8) which is adjustably mounted on a bracket 332 secured by screws 334 to the front of the box-shaped head 22, the breast gage 2 93 being moved by the cam rearward into an operative or active position such that were the gage to remain in this position during the descent of the breasting knife MD the cutting edge 288- of' the knife would be in substantial alinement with the work engaging facer322 of the gage.

The cam 330 is mounted on a threaded portion of a horizontal rod 336 which is rotatably mounted in the bracket 33.2. When the rod 336 is rotatedthe carn 330 is moved lengthwise of the rod and relatively to the breast gage 290 to adjust the breast gage fiilaforward or rearward and thereby to vary the positions of the heels engaged by it forward or rearward relatively to the path of movement of the breasting knife 14%.

When the turret 238 rotates the breast gage rec moves with it away fromthe cam 33!] and is moved by the tension spring 324 forward, until the rear ends of the slots 3H] engage the screws 323 which may be collectively referred to as a stop, to a retracted or idle position away from the heel I65 which has previously been placed on the heel supporting block 218 against the breast gage 29% and which at such time has been clamped to saidblcck by means hereinafter described. Such retraction of the breast gage 2% leaves a space between it and the clamped heel into which space material removed from the breast of the heel may move and also insures that the breasting knife I45! during its descent will not engage the breast gage.

The heel supporting block 218 has adiustably mounted on it a side gage or abutment 34% Figs. '7 and 8) against whicha side of the top lift of the heel 243 is placed. The side gage 335i is secured by a screw 342 .(Fig. 7) to the heel supporting block 238 and may be adjusted laterally of the heel to accommodate top lifts of heels I65 of different sizes.

The cutting edges 288 of breasting knives i4 3 such as are intended tobe used in the illustrative machine usually have cylindrical cutting portions. Since the edge 322 of the breast gage 298, against which edge the breast of a top lift of theheel I65 is positioned, is curved to correspond to the curvature of the knife edge 288, the precise position of the heel laterally on the heel supporting block 218 is not critical, it being apparent that when the heel has been carried around beneath the knife I48 a center line through the heel will be radial to the center of the knife curvature even though said line does not pass through the center of the knife edge. The gage 290 however has formed on it indicating marks 344 (Fig. 7) by means of which the heel I55 may be so positioned that it will lie centrally under the breasting knife I40 and the side gage 3 56 may then be adjusted to the heel to enable the operator readily to position heels of that particular size upon the block 218.

When the turret 238 has been rotated through half a revolution a stop plate or abutment 346 (Figs. 2 i, 5, 7 and 8.) thereon engages a pawl 348 secured to a pivot pin 359 journaled in the boxshaped head 22, there being two abutments on the turret one at each side of the axis of rotation 352 of the hollow shaft 262. The pawl 348 prevents overthrow of the turret 5 3-9 and a second pawl 354 fuicrurned on a pin 355 secured to the box-shaped head 22 is moved in behind the lug 346 to prevent reboundof the turret. An arm 358 secured to the lower end of the pivot pin 358 is constantly .urged caunterclockwise, as viewed in Fig. 5, by a tension spring 3% to move the pawl 348 against a stop 362 into the path of movement of the abutment 345 on the-turret 238. When the machine is in its stopped position the pawl 343 is held out of the path of movement of the abutment 346 against the action of the spring 339] by a pin 33% on the gear segment 258 as shown in Fig. 4. Soon after the gear segment 256 has commenced to move and the abutment 345 on the turret 233 has moved past the end of the pawl 348 the pin 33$ on the gear segment 256; allows the pawl to move into the path of movement of the other abutment 346 on the turret to prevent overthrow thereof. As the gear segment 25% approaches the end of its return movement the pin 36 4 thereon causes the pawl 348 again to be withdrawn, by which time inthe cycle of the machine the breasting knife its is rising after having breasted the heel 24b. The pawl 354 is constantly urged against a stop 385 by a torsion spring 355 and is moved against the action of said spring by the abutment 346 as said abutment moves past the pawl, the pawl thereafter snapping back to its active position behind the abutment.

Each heel I35 is clamped on one of the heel supporting blocks 218 by a clamping lever 363 (Figs. 1, 2, 7 and 16) which i swung down to clamp the heel by mechanism hereinafter described and comprising the clutch treadle 42 and which is helddown' by a cam 37,9 as the heel 24% moves from loading to breasting stations and until the turret 238 has carried the heel from beneath the breasting knife I43 after the heel has been breasted.

Secured to the turret 2 38 are two upwardly extending rods 3% (Fig. 17) which are arranged parallel to and at opposite sides of the axis of rotation 3520f the turret, the upper ends of the rods being connected by a crosshead 374 secured to the rods. Slidingly mounted on the rods 312 is a clamping lever carrier 313 (Figs. 2, 7 and 17) comprising two sleeves 3T8 mounted upon the rods M2 and a cross piece 383 secured to the upper end portions of the sleeves. The cross piece 33% has rotatably mounted in it, in axial alinement with the hollow shaft 262 which carries the turret 238, an externally threaded tube 3S2.

The lower end of the tube 382 has on it a head 334 (Fig. 17) which engages the underside of the cross piece 388 and a nut 386 above the cross piece, the nut being so adjusted that the threaded tube 382 can rotate in the cross piece 388. The tube 382 is threaded through the cross head 3'14 and has at its upper end portion a knurled head by means of which the tube may be rotated to raise or lower the clamping lever carrier 318 into difierent operating positions lengthwise of the axis 352.

Each clamping lever 338 is pivoted on a stud (Figs. 2 and 7) secured to the lower end portion of an associated sleeve 318 of the clamping lever carrier 335. at its outer end a clamping block 332 (Figs. 1, 2, l and 16) which is pivotally mounted on a stud 334 (Figs. and 16) secured by a screw 385 to said lever. The clamping block 392 has formed in it an elongated slot 398 through which the stud 334- passes and which allows the block 392 to yield upward on the lever 338 against the action of a compression spring 488 interposed between the stud and a recess of the block. The stud has at its outer end a circular head 402 having on one side a flattened face 404, (Fig. 15) said clamping block 392 having secured to it a plate 338 arranged to engage the flattened face but normally spaced from said face to allow the block to swivel to a limited extent about the stud. The lower face of each of the clamping blocks 392 has extending downwardly from it two pointed pins or prongs 488 which are arranged to engage and sink into the attaching face of the heel on the heel supporting block 2T8.

Each clamping lever 388 carries a roll or follower 413 (Figs. 1, 2 and 7) which is held, by a tension spring M2 against the cam 370. The cam 3H5 is formed on a nonrotatable cam rod 414 (Figs. 1, 2, 8 and 17) which is slidingly mounted in the hollow shaft 262 and in the externally threaded tube 382.

The cam 3% which, as will be hereinafter explained, is depressed to operate the clamping levers 368, is so constructed and arranged that when it is depressed the clamping lever at the heel receiving or loading station is swung downward to clam the heel I65 on the heel supporting block 2i? and the clamping lever at the heel breasting station is maintained in its heel clamping position. When the turret 233 rotates, the clamping lever 383 which is leaving the loading station is held in its heel clamping position by reason of its cam roll 4H] tracking around the periphery of the cam 313 onto a portion of the cam which is concentric to the axis of the rod 4 l 4. Such clamping lever 368 is thus held locked until the heel clamped thereby reaches the breasting station and for some time thereafter. The other clamping lever 368 which during such time is moving from the breasting station is, soon after the turret 238 begins to move, allowed to be moved upwardly by its tension spring 4H2, as its associated cam roll 4H! rides onto a depressed portion of the cam surface thereby releasing the heel which has just been breasted. The last mentioned clamping lever 388 is held in its raised position until it reaches the loading station at the front of the machine. The operator may keep the treadle 42 depressed until the end of the indexingmovement of the turret 238 or may remove his foot from the treadle once said turret has been rotated sufficiently to cause the roll 418 to ride onto a high portion of the cam 318. The cam 338 is so constructed and arranged that re- Each clamping lever 358 has V gardless of whether the treadle 42 is depressed or not the cam roll 4H1 moving away from the breasting station rides along a low portion of the cam when the turret 238 has been indexed about 75 from said station, thereby releasing the clamp 338 operating against the heel which has just been breasted.

The cam rod M4 is moved downward by the clutch treadle 42 and is raised by a compression spring 4H3 (Fig. 17) which surrounds a reduced upper portion of the rod above the cam. Lower and upper ends of the spring 4l6 engage respectively the lower end of a bore in the tube 332 and a collar 418 secured to the upper end of the cam rod 4 l 4 and slidingly mounted in said bore.

The lower end of the cam rod M4 is secured (Fig. 2) in a longitudinally grooved member 420 which is longitudinally slidable in a longitudinally grooved bore of a bearing 422 secured to the boxshaped head 22. Both the cam rod 4 and the member 423 are therefore splined to prevent relative rotation between them. The lower end of the grooved member 420 is pivotally connected to the upper end of a treadle rod 424 (Fig. 1) the lower end of which is connected to the clutch treadle 42. The rear end of the treadle 42 is pivoted to the front end ortion of an arm 428 which is secured on a horizontal shaft 428 extending laterally of the machine and rotatably mounted in bearings on the base 20 of the machine. A rearwardly projecting arm 430 is secured on the shaft 428 and has connected to it the rod 58, said arm being constantly urged upward by a tension spring 432 opposite ends of which are attached P to the base 29 and to an arm 434 secured to the shaft 428. When the treadle 42 is first depressed the tension spring 432 resists downward movement of the rearwardly extending arm 438 and accordingly engagement of the clutch, downward movement of the treadle causing the clamping lever 368 at the loading station to be swung down to clamp the heel I65 on the heel supporting block 218. Resistance to further movement of treadle thus encountered causes the treadle upon further depression to fulcrum on its pivot to the rod 424 and operate the arm 430 downwardly to trip the clutch.

As the heel I65 which has just been breasted is being rotated away from the breasting station and after the lever 368 clamping the heel against the heel supporting block 278 has been released, said heel is ejected from the turret by mechanism which will now be described. The ejecting mechanism comprises an oifset vertically disposed shaft 435 (Figs. 1, 18 and 19) which is parallel to the axis of rotation 352 of the turret 238 and is rotatably mounted about an axis 448 (Fig. 19) in a bearing in the box-shaped head 22 at the right front portion thereof, just beyond the periphery of the turret. The shaft 436 has secured to its upper end portion an ejecting rod 438 (Figs. 1 and 19) which projects inward towards the turret axis 352. When the heel I which has been breasted has been unclamped and carried around on the turret 238 about ninety degrees from the breasting station it engages said ejecting rod 438 and is temporarily held thereby as the turret continues to rotate. When the turret 238 has moved a little further the ejecting rod 438 is given a quick movement about the axis 448 to eject the heel from the turret. The shaft 436 has secured on its lower end portion an arm 442 to which is pivoted a link 444 which extends to the left into the box-shaped head 22. The link 44.4 has on it a shoulder 446 which is arranged to be engaged by a pin 448 projecting upwardly from the bevel gear 258. As the bevel gear 258 is being moved in a direction to rotate the turret 238 the pin M8 engages the shoulder 4st and through the link 14 3 moves the ejecting rod 438 in a direction to eject the breasted heel. As the the pin i l-=3 moves the link 444 towards the left (Fig. 18) an upwardly extending portion 458 of the link engages a cam face 452 on a cam plate 454 which is secured to the head 22 with the result that the link is moved counterclockwise about the arm M2, the pin moving past the shoulder M56 and the rod 538 being quickly returned to an idle position by a tension spring 4-55 attached to the link and to the head. Return movement of the link l l l under the action of the spring 55 is limited by the engagement of the upstanding portion 4'58 of the link with a stop (25'? secured to the cam plate set. The upper face of the pin 38 is rearwardly beveled in order that it shall ride beneath the left-hand end por tion of the link during the return movement of the bevel gear fitsthe link being raised slightly during such movement against the action of a spring 58 opposite ends of which are attached to the link to the head 22. When the pin 348 during its retractive movement has passed the link etfi said link is moved downward into substantial engagement with the bevel gear 253 by the tension spring 358'.

Before the clutch of the illustrative machine is engaged to cause the machine to be operated by power, the heel to be breasted is placed on the heel supporting block 2'58 with its top lift in engagement with the breast gage 2M and side gage 349, the latter having been adjusted in accordance with the width of the heel.

The externally threaded tube 382 is then, if necessary, adjusted upward or downward to suit the height of the heel. Each clamping lever 338 is so adjusted that, when the cam rod 4M has been moved downward to cause the pins or prongs see on the block 382 of one of the clamping levers to be sunk sufiiciently into a heel to hold it firmly on the heel supporting block, the yield in the block on the clamping lever will have been taken up. The heel supporting block ills may, if necessary, be adjusted in the arcuate guideway 282 in the turret 238 to cause the breast of the breasted heel to be disposed at the desired angle to the tread face of the top lift of the heel.

When the above-mentioned adjustments, or such of them as may be necessary, have been made the treadle 4 2 is depressed to move the front clamping lever 388 down and to cause the pins 588 on said lever 383 to be sunk with equalized pressure into the heel, the cam roll till of the front clamping lever then being on the high part of the cam Bill and the heel being positively clamped on the heel supporting block H8. The treadle is then further depressed to cause the machine to be operated by power.

During the power operation of the machine the turret 238 is rotated to carry the heel to the breasting station and the heel clamping unit which was in the breasting station rotates to the loading station to receive. another heel to be breasted. While the clamped heel is being carried around to the. breasting station it is held firmly on the heel supporting block 273v by the clamping lever 358. After the heel has arrived in the breasting station and the turret 238 has been locked by the pawls 348 35 the breasting knife its is moved down, to breast the heel. During the breasting of the heel the operator places an unbreasted heel on the heel supporting block 2H3 then at the front of the machine and depresses the treadle 42 to cause said heel to be clamped and the machine again to be power operated. During the power operation of the machine the second heel is carried to the breasting station beneath the knife and the heel which has been breasted is rotated on the, turret away from the loading station and after being released by an associated clamping lever 388 is ejected from the machine.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent of the United States is:

1. In a heel breasting machine, a turret having a plurality of units, each of said units comprising means for supporting, positioning and clamping a heel, means for automatically indexing said units successively between a heel receiving station in which heels are positioned and clamped in said units and a breasting station in which said heels in said units are breasted, a manually actuated member, and mechanism operative in response to movement of said member for clamp g a heel in one of said units at said heel restation and for thereafter effecting acion of said means.

. In a heel breastins machine, a turret having .ty of units, power operated means for g said turret to move said units successively from heel receiving toheel breasting stations, each of said units comprising means for supporting a heel, means for positioning the heel, and a clamp for securing the heel against movement in the unit, mechanism for operating the clamps, mechanism for actuating said indexing means, and a manually actuated member which is operatively connected to said mechanisms and initial movement of which causes the heel supported by and positioned in one of said units at its heel receiving station to be clamped in said unit and continued movement of which causes the power operated means to be rendered effective to index the turret.

3. In a heel breasting machine, a turret which is rotatable about an axis and has a plurality of heel receiving units each of which comprises an abutment constructed and arranged to be engaged by the side of a heel and a gage to be engaged by the breast. of the heel, said gages being mounted for sliding movement upon their associated units, resilient means for constantly urging the gages to idle positions upon the units, power operated means for rotating the turretinto diiferent indexed positions successively to move the units between heel receiving and heel breasting stations, a cam for moving against the action of said resilient means said gages to gaging posi tions as the units successively arrive at the heel receiving station, and means for clamping in said units said heels positioned in the units, said gages as the units are rotated away from the loading station being moved under the action of said resilient means away from the breasts of the heels positioned and clamped in said units.

4. In a heel breasting machine, a frame, a tur-. ret which is rotatable upon said frame and has a plurality of heel. receiving units each comprising an abutment to be engaged by a side of a heel, a gage which is mounted for sliding movement upon its associated unit and is engaged by the breast of the, heel, a stop, and a spring for constantly urging the gage toward said stop to an idle position upon theunit, power operated means for successively rotating the units between heel :receiving and heel breasting stations, and a cam adjustably secured to the main frame for moving said gage against the action of said spring to gaging position as the unit arrives at the heel receiving station, said unit also comprising means for clamping the heel positioned in said unit, said gage as the unit is rotated away from the loading station being moved in said unit under the action of said spring away from the breast of the heel positioned and clamped in the unit.

5. In a heel breasting machine, a frame, a turret which comprises a plurality of units and is rotatable into different indexed positions to move said units between heel receiving and heel breasting stations, a clamp mounted in each of the units, means for positioning a heel in each of t e units at the heel receiving station, and a cam operative to cause the clamp to secure the positioned heel against movement in its unit, said clamp as the unit moves from the heel receiving station to the breasting station being adapted to move around the cam, the construction and arrangement of the cam and the clamp being such that the clamp ir 'espective of the position of the cam after the heel has left the heel receiving; station holds said heel clamped in the unit until said unit has moved to a position past the breasting station.

6. In a heel breasting machine, a frame, a turret which comprises a plurality of heel receiving units and is rotatable about an axis to move said units successively between heel loading and heei breasting stations, each of said units comprising a clamp which is pivoted in the unit and has a follower portion, and means for positioning a heel in the unit at the heel loading station, a cam arranged in the vicinity of the axis of rotation of the turr t and movable lengthwise of said axis for engagement with said follower portion to clamp the positioned heel in its unit, saizl cam being fixed against rotation to cause as the unit of the turret is rotated away from its loading station said follower portion of the clamp to move onto high portions of the cam and to remain on such portions until the unit has passed its heel breasting station, the construction and arrangement of the cam and the clamp being such that irrespective of the position of the cam along said axis said heel is clamped in the unit until the unit has been indexed to and past the heel breasting station.

7. In a heel breasting machine, a support for a heel, means for positioning the heel upon the support, a clamping unit which comprises a spring and a heel engaging member and which is movable in a predetermined path toward and away from said positioned heel to secure said heel against movement upon the support, and means for operating said clamp, said heel engaging member being yieldable generally lengthwise of said path against the action of said spring and being tiltable transversely of said path.

8. In a heel breasting machine, a support for a heel, means for positioning the heel upon the support, a clamping unit comprising a block movable in a predetermined path and having heel engaging prongs which are spaced transversely of said path and are tiltable transversely of said path, and means for yieldingly moving the block in said predetermined path tiltingly to force the prongs with equalized pressure against the heel.

9. In a heel breasting machine, a turret rotatable about an axis and comprising a plurality of heel supporting and positioning units, a carrier mounted upon the turret, a plurality of clamps which are mounted upon the carrier and are movable relatively to the carrier to clamp heels supported by and positioned in the units, and a cam movable lengthwise of said axis to operate said clamps, said carrier being movable into different adjusted positions lengthwise of said axis.

10.1fm a heel breasting machine, a turret which is rotatable about an axis and comprises a plurality of heel supporting and positioning units, a carrier mounted upon the turret, a plurality of clamps which are mounted upon the carrier, a cam, cam followers mounted upon the clamps, said cam being mounted for movement lengthwise of said axis but not about said axis to cause said clamps to secure heels supported by and positioned upon said units to said units, and means for indexing the turret to move the units successively between heel receiving and heel breasting stations, said cam and clamps being so constructed and arranged that when the turret is rotated to move said units from the heel receiving station to and past the heel breasting station the heel is held securely in said units irrespective of the position of the cam lengthwise of said axis.

11. In a heel breasting machine, a turret comprising a plurality of units constructed and arranged to position and clamp heels, a power drive for indexing the turret to move said units successively from heel receiving to heel breasting stations, a carrier movable in a predetermined path, a knife secured to the carrier, an actuating slide which is constantly moved in timed relation with the power drive, and latch means for automatically connecting the actuating slide to the carrier during a predetermined portion of the cycle of operation of said drive to cause the knife to breast the heel.

12. In a heel breasting machine, a support for a heel, a power drive, a carrier movable in a predetermined path, a knife secured to the carrier, an actuating slide which is constantly moved in timed relation'with the power drive during a cycle of operation of said drive, latch means for automatically connecting the actuating slide to the carrier during a predetermined portion of the cycle of the power drive to cause the knife to breast the heel, and manually operated means for disconnecting the carrier from the actuating slide to cause breasting movement of the knife to cease.

13. In a heel breasting machine, means for positioning and clamping a heel, a power drive, a carrier reciprocable in a rectilinear path, a knife secured to the carrier, a stop, a spring for constantly urging the carrier in one direction to an idle position against the stop, an actuating slide which during a cycle of the power drive is constantly moved in time relation with said drive, latch means for automatically connecting the actutaing slide to the carrier during a predetermined portion of the cycle of operation of the drive to-cause the knife to breast the heel, and manually operated means for disconnecting the carrier from the actuating slide at any time during the operation of the breasting knife to stop the breasting action of the knife and to enable said carrier to move under the action of the spring against said stop.

14:. In a 'heel breasting machine, a turret, a pair of heel positioning and clamping units supported by the turret, a carrier movable in a fixed path, a breasting knife secured to the carrier, a power drive, a carrier actuating slide which is operatively connected to said drive and is moved in opposite directions twice during a cycle of the drive, mechanism operatively connected to said drive for indexing during the first part of said cycle the turret to move one of' said units from a heel receiving to a heel breasti'ng station and for causing the turret to rest atthe heel breasting station during a second part of said cycle, and means for causing the carrier to be connected to the slide only during a cutting stroke of its second movement in opposite directions of said cycle in order to breast the heel at said breasting station.

15. In a heel breasting machine, a power operated drive, means for breasting a heel, a clutch for operatively connecting said drive t said means and for disconnecting said drive from said means, a brake which is operative against said means when the clutch is disengaged and which i is inoperative against said means when the clutch is engaged, a common treadle for operating the clutch and the brake, a manually operated member connected to and adapted to operate said means, and manually controlled mechanism for maintaining said clutch disengaged when said treadle is operated to release the brake thereby enabling the operator to operate said means upon actuation of said member.

16. In a heel breasting machine, a turret, a

knife mechanism which comprises a shaft and which operates the turret and the knife in timed relation, a driving pulley which is rotatably mounted upon said shaft and carries one or more elements, a drive for operating the shaft, said drive comprising a spring actuated member forming with one or more of said elements carried by the pulley, a clutch which when said member i in an advanced position causes the clutch to be engaged and the drive to actuate the shaft and when in a retracted position causes the clutch to be disengaged and the drive to be idle, a treadle, a brake movable to and from an operating position against said drive in response to movement of the treadle, said treadle being constructed and arranged to move the brake away from said drive and enable said spring actuated member to move to its advanced position to cause the clutch to be engaged, a hand wheel connected to the shaft for turning said shaft manually, and manually actuated means for rendering said spring actuated member ineiiective to cause engagement of the clutch in respons to movement of the treadle, thereby causing in response to movement of said treadle release of the brake without driving said shaft by power and thus allowing the shaft to be rotated by hand and accordingly the operation of the turret and the knife to be tested.

17. In a heel breasting machine, a knife carrier which is movable in a predetermined path and has a face provided with arcuat recesses which extend generally lengthwise of said path and are spaced from each other widthwise of said path, a heel breasting knife, an arm, one end of which is pivoted to the carrier, arcuate selfadjusting abutment-s which are journaled in said recesses, said arm having formed in it an arcuate recess and comprising a self -adjusting block having a pair of salient knif engaging portions which are arranged opposite and extend lengthwise of the arcuate self adjusting abutments journaled in the carrier and which are constructed and arranged to force the knife against the self adjusting abutments of the carrier with equalized pressure, and interlocking clamping means carried by the: carrier and the arm for moving the arm with considerable pressure toward the carrierand for locking said arm under such pressure to the carrier in order to secure the knife to the carrier.

18. In a heel breasting machine, a turret comprising a plurality of units, means forsupporting and positioning heels in said units, power operated means for indexing said turret to rotate said units successively between heel receiving and heel breasting stations, a clamp for securing a positioned heel against movement in each of the units, mechanism movable to a predetermined position for causing actuation of said power operated means, mechanism for operating the clamp,

a manually actuated member which is operatively connected: to" said mechanisms and initial movement of which causes a heel to be clamped in one of said units and continued movement of which causes the power operatedmeans to be rendered effective to index the turret, means which is constructed and arranged to render the first-named mechanism nonresponsive to movement of said manually operated member until completion of a power cycle of said power operated m ans once said power operated means has been initiated and also to hold said first-named mechanism in a position to insure that the cycle of said power operated means shall be completed without interruption, said last named means also being constructed and arranged to render the anually operated member and the clamp actuatin, echanism and accordingly the clamp free to be moved during the cycle of the said power operated means.

19. In a heel breasting machine, a support, a block which has a heel supporting surface and mounted upon the support, a breast gage which is mounted upon said surface of the block and has a circular face constructed and arranged to be engaged by the breast of a heel to position said heel lengthwise on said surface, a gage for positioning said heel widthwise upon said surface, said block being angularly adjustable about an axis which extends along said work supporting surface of the block and is approximately tangent to said circular face of the breast gage, and a heel breasting knife having a cutting edge movable in a fixed rectilinear path at one end of which a central portion of the cutting edge of the knife is approximately in engagement with said axis.

20. In a heel breasting machine, a frame, a turret which comprises a pair of units for receiving heels and which is mounted for rotation in one direction in said frame about an axis to index said units between heel loading and heel breasting stations, a pair of teeth mounted on said turret, a pawl mounted for oscillation about said axis to rotate the turret 180 and then to be retracted 180 while the turret is a rest with its units at heel loading and breasing stations respectively, power means for operating the pawl, and means comprising an abutment operatively connected to said power means for stopping the turret with its units arranged at the heel loading and heel breasting stations respectively and for temporarily holding said units at said stations.

21. In a heel breasting machine, a frame, a turret which comprises a pair of units for receiving heels and which is mounted for rotation in one direction in said frame about an axis to index said units between heel loading and heel breasting stations, a pair of teeth mounted on said turret, a pawl mounted for oscillation about said axis to rotate the turret 180 and then to be retracted 180 while the turret is at rest with its units at heel loading and breasing stations respectively, power means for operating the pawl, a carrier, actuating member reciprocated through a first complete cycle while the turret is being indexed and reciprocated through a second complete cycle while the turret is at rest, a knife secured to the carrier, and a latch for operatively connecting said actuating member to the carrier after the first cycle of said carrier actuat ing member to operate the breasting knife during the second cycle of said member while the turret is at rest.

22. In a heel breasting machine, a support which has a heel supporting surface in which is formed a recess, a wooden heel block fitting in said recess, an elevating member which is mounted upon the support for movement into different adjusted positions toward and away from the heel supporting surface of said support and which is constructed and arranged to support said block and to move an operative surface of the block into alinement with the heel supporting surface of the support.

23. In a heel breasting machine, a support having a surface in which is formed a recess of square cross-section, a wooden block which is complemental to said recess and is positioned in said recess, said support having one or more ramp portions, a wedge-shaped member which is constructed and arranged to support said block and is mounted upon said ramp portions, and a screw which is threaded into said member and is mounted for rotation and bodily displacement in the support and is constructed and arranged to move said member into difierent adjusted positions along said ramp portions of the support to shift an operative face of the wooden block into alinement with the heel supporting face of the support.

24. In a heel breasting machine, a turret having a plurality of units, means for positioning and clamping heels in said units, mechanism for successively moving said units between heel receiving and heel breasting stations, an ejector for removing heels from said units, said ejector comprising a member constructed and arranged to be engaged by the heels after the units have left the breasting station, a latch arm operatively con nected to said member, means which is operated in timed relation with said mechanism and is constructed and arranged to engage said arm to move it in one direction, thereby causing said member to sweep the heels from the units, a cam for moving said arm out of its driving engagement with said last-named means, a stop, and a spring formoving said arm to an idle starting position against said stop.

PERCY WHITE. FRANK BYCROF'I KEALL.

REFERENCES CITED UNITED STATES PATENTS Name Date Schoen Apr. 24, 1923 Number