US2002512A

US2002512A - Heel breasting machine

Info

Publication number: US2002512A
Application number: US642920A
Authority: US
Inventors: Thomas H Seely; Milton H Ballard
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1932-11-16
Filing date: 1932-11-16
Publication date: 1935-05-28
Anticipated expiration: 1952-05-28

Description

May 28, 1935.

\ T. H. SEE'LY ET AL HEEL BREASTING MACHINE 5 Sheets-She et 1 Filed Nov. 16, 1932 i ll llll III II.

M W g May 28, 1935. -T. H. sEELY ET AL HEEL BREASTING MACHINE Filed Nov. 16, 1952 5 Shets-Sheet 2 T. H. SEELY Er AL HEEL 'BREASTING MACHINE May 28, 1935.

Filed Nov. 16, 1932 5 Sheets-Sheet I5 //VVENTUR'5.

Fig.3.

May 28, 1935. x H. SEELY El AL HEEL BREASTING MACHINE S Sheets-Sheet 4 Filed NOV. 16, 1952 /A/ME/VWFQ WM Fig. 4.

30315 W i R. f

May 28, 1935.

' T. H. SEELY ET AL HEEL BREASTING MACHINE Filed Nov. 16, 1932 5 Sheets-Sheet 5 Patented May 28, 1935 nd Milan Ballard, to United Shoe Ma chinery Corporation, PatersomN; J a corpora-v v tion of New Jersey the heights of lasts and variations in the thick nessibi the, sole materials, inline with the breast- I may terminate with the knife positioned accuator'for predetermining ing knife, all of which make effect antadjustment of the breasting knife whereby the knife twill-cut ,a'chip from the heel, breastwithout penetrating the shank of the shoe. An obj ect- ,of the'present invention is to provide; laqheel rbreasting machine; which may be depended upon, to cut completely through the breastgof an attachedheelwithout injuring, the shank of thetshoep t "5113313, orderto, measure the. stroke, or", the breasting knifeto cause theknife to come to rest accurately positioned at the base of the heel, it is proposed by the present invention, to provide a measuring means, arranged to operate inadvance of, the knife stroke: wherebygthe termination of the knife stroke maybe arranged tooccur as the driving mechanism comes to the bottom' of its strokeythus obviating'thepossibility of the knife being carried beyond the base of the heel. With this; in view, a feature of the invention contemplates the prcvisionaina heel breasting machine, of abreastin g knife and a knife actuator arranged tol providea variable lostzmotion between; the actuator and'the knife at the} beginning of the strokeof the actuator;

In order that the stroke of the breasting knife ratelyf at the base of the. heel to be breasted," it is further 'proposed to provide means operating in advance of theknife stroke for gaging the limit of, the knifestroke from the shank of the shoe tobe breasted, and in, accordance with a feature of 3 he invention, there are provided a shank engaging means "and connections between said {shank engaging means and the knife actuthe position from which the actuatoroperates. 1 p

' It is further proposed'to employ a shank en gaging member to measure the extentof the breasting cut,;and to that endand in accordance with'a feature of the invention the illustrated heel 'breasting machine is provided with connectionsfromthe shank engaging member to'the knife actuator for measuring, in advance. of the knife stroke, the efiective strokeof the actuator. tItis desirable that the elevation 01" the heel cutting edge November 16,1952, Serial No.,e 42,.9.20;

(Cl. 12-347) remain unchanged during the kniiestrokein ,Thomas H. SeelyQll/Ielrose Beverl Mass., assignors orderithat the knife may come to, rest with its 7 accurately positioned at the base of the heel. To; this end, Wis-proposed that the sole materials in liner'with, the b'rasting' knifebe compressed; prior to the: knife stroke sufiiciently to take all of. the y ieldtherefrom and to bring them down-firmly on'tothe last in order that they may.- rema'n fixed during the knife stroke and not subject. to: depression by the thrust of the knife. result it is proposed to; apply pressure to the shank and, accordingly, a feature of-lthe inven:

'tion consists in the provision in aiheel breasting machine: of a shank ,presser, means, energized by the next preceding cycle of theimaehine and normally disconnected from said presserfor ap-v plying pressure theretoyarid means. for connecte ing said presser to said pressureapplying means at the beginning of thejgpower cycle; z

It is dsirablethattheap lication of pressure be timed to take efiect in advance ofthe actuation of the, breasting knife inorder that the strokenof the knife may be measured after the elevationzofythe shank has been fixed. Withthis in. view an object of the'inventionuis so: tofore ganizewthepower pressure means with relation to the knifeand its operating mechanism: that the stroke of the knife will not commence until after the power pressure has been effected.

Accordingly, a featureof the invention-consists in timing the application of pressure to the shank presser to take effect before the. stroke of the actuator commences.

his proposed to apply clamping pressure to the tread of the-heel to be breasted as well as'tc the shank of the shoe and to' that end, a feature of the invention consists in the provision in a heel breasting machine ;of a=shank presser, a presser post, a heel treadplate, aheel plate post, and means for applying, distributed powere producedpressure to saicl'posts, It is desirable that these pressures be equal in order that there may beno misplacement of-the shoe upon the jack asa consequence of the poweroprese sure and accordingly, :means for effecting the application of, such equal pressures constitutes In ordento, effect this the heel tread of a shoe to be breasted.

' ment :with the breasting knife.

. stop employed as 1 to' remove a substantial itself because of the fact that the knife comes to rest at an elevation relatively remote from It is proposed to provide means for varying the retracted position of the breasting knife in order that the knife may come to rest at an elevation, relatively to the tread of the heel to be breasted, which will permit gaging of the breasting position of the shoe relatively to the breasting knife. Accordingly a feature of the invention contemplates the provision in a heel breasting machine of a knife slide in which the breasting knife is mounted, yielding means for holding the knife slide in retracted position, and means for adjusting the retracted position of the slide whereby the knife may be located at an eleva-' tion such that the breasting position of a shoe may be accurately gaged thereby.

It is of the utmost importance that the positioning of a shoe, preliminary to' the heel breasting operation thereon, consume the least possible time, and it is an object of this invention so to organize the jack and its supporting mechanism that the positioning of a'shoe may be quickly and conveniently effected. Accordingly, a feature of the invention contemplates theprovision in a heel breasting machine of a shoe supporting jack yieldingly supported and arranged. for straight-line movement to and from operative position.

'It is an object of the invention to provide for alateral movement of the shoe in order to permitthe shoe to be brought into proper aline- To this end there is provided, in accordance with a feature of theinvention, a jack carrier arranged to permit rotation of the jack about a horizontal axis extending longitudinally of the jack and shoe bottom engaging means for clamping a shoe on the jack and thus holding the jack from rotating during the breasting operation.

In order to permit the shoe bottom to be maintained in a horizontal position during the swinging of the jack about its horizontal axis it is desirable that the shoe be mounted on the jack with capacity for a limited rocking movement about the toe and heel supports and it is also desirable that an auxiliary support be provided'for maintaining such horizontal arrange- 1 ment of the shoe and relieving the operator of the burden of holding the shoe in position on the-jack after the jack has been brought into operative position. Accordingly, a feature of the invention consists in the provision in a heel breasting machine of shoe supporting means comprisinga toe support, a heel support and a heel stop arranged partially to embrace the back of a heel 'to be breasted.

In order to secure the shoe in position to be operated upon by the breasting knife it is proposed to employ, as one of the clamping members,' a heel stop which may, or may not, be the an auxiliary shoe support, and accordingly there is provided, in accordance with a feature of the invention, means for clamping a shoe upon the jack comprising a shank presser, a'heel tread plate and a heel stop.

It is usual for the breasting knife to be'beveled on its forward surface. If the knife is required chip from the heel, as is usually the case, the engagement of the chip with .the beveled'surface of the knife urges the knife. away from its prescribed path of movement. If the'knife is securely held so that it cannot spring away from its path of movement the engagement of the chip with the beveled surface of the knife tends to tilt the shoe backwardly upon the last pin. It has been found that such tilting of the shoe makes it difficult to produce a straight, smooth breasting out. In order to produce a straight, clean cut which will require only a minimum of scouring to produce a finished heel breast, it is proposed to eliminate the tendency of the shoe to tilt backwardly upon the last pin by looking a heel stop in heel engaging position and thus preventing any backward movement of the heel. Accordingly, a feature of the invention contemplates the provision in a heel breasting machine of a heel stop arranged to engage the back of a heel to be breasted, and means actuated by the cutting thrust of the breasting knife for locking the heel stop in heel engaging position.

These and other features of the invention will appear more fully from the following detailed description when read in connection with the accompanying drawings and will be pointed out in the appended claims.

In the drawings,

Fig. 1 is a front elevation of a machine embodying this invention;

Fig. 2 is an enlarged side elevation of the upper portion of the machine;

Fig. 3 is an enlarged side elevation of the lower portion of the machine;

Fig. 4 is a horizontal section taken substantially on the line IVIV of Fig. 2, with certain parts at the front of the machine broken away;

Fig. 5 is an enlarged fragmentary view of certain parts in the head of the machine;

Fig. 6 is a detail view of a heel stop;

Fig. 7 is a sectional elevation taken substantially on the line VII-VII of Fig. 3; V

Fig. 8 is a fragmentary plan view on the same scale as Fig. 2 illustrating certain parts in the head of the machine;

Fig. 9 is a perspective view of a heel tread plate and its carrying member;

Fig. 10 is a fragmentary vertical section through the center of a heel which is being breasted;

Figs. 11 to 14, inclusive, are fragmentary views illustrating parts of the knife actuating mechanism in successive positions during the cycle of operation; and

Fig. 15 is a vertical section taken substantially on the line XVXV of Fig. 4.

The invention is illustrated as embodied in a machine for breasting heels after they are attached to their shoes. The breasting knife 20,

is power actuated by a motor 22 (Fig. 1) through suitable connections including a constant stroke knife actuator 24 arranged to impart a variable stroke to a knife slide comprising a knife supporting cross head 54 and a pair of parallel bars 56 to which the cross head is secured. The variation in the knife stroke is effected by providing a variable lost motion at the beginning of the stroke of the actuator. The extent of the knife stroke is predetermined by measuring means comprising a shank presser 26 (Fig. 10) arranged to engage the shank at a location sub-. stantially adjacent to the heel to be breasted and connections between the shank presser and the knife actuator 24 for measuring in advance of the stroke of the actuator the extent of its lost motion.

A shoe to be breasted is mounted upon a jack 28 (Fig. 2) supported upon a jack carrier 30 ti on .by-a torsion spring grooves formed in plates aooazne machine column and diverging forwardly there- (Fig. 4) and arrangedforstraight line hori-l zontal movement relatively to J the: carrier. in order to move the shoe to. and frompositionto beoperated upon by the breastingknife,hereinafter referred to as :the breastingtposition;

The shoe is securely clamped upon the jack by the shank presser 26 and a heeltreadplate 32s (FigsLEJ and to, which equal pressures are applied by a power (compressed spring; (Fig. 1) through connections hereinafter described. The shoe is clamped at the back. of the heel against a heel stop 36 (Figs, 6 and 10).. arranged to be locked in heel engaging.positionyin order to prevent any tilting of the shoe about the last pin during the breasing cut. Theshoe support: ing jack 28 is clamped in breasting thevpressure applied to the shank presserQZG andthe heel plate 32, and this pressure is also employed to actuate the devices for locking the heel stop 38 in heel engaging position, s The motor 22 transmits power to the breasting knife through a combined driving wheel and balance wheel 38 (Fig. 3) andmechanism comprising a driving shaft 40 arranged to be connected to the wheel by a one revolution clutch mechanisim 300, a crank pin 42 formed integrally with the driving shaft at its forward end, and connections between the crank pin and the knife actuator 24 comprising a screw 44 pivoted to the actuator, a wing nut 46 carried by said screw, and a connecting link or yoke 48arranged to arrest the rotation of the nut and connect the nut and the crank pin'42. The breasting knife 20. is retracted and maintained in retracted posi- 50 (Fig. 1 arranged to impart an upward pressure to the knife actu ator 2.4 and through the actuator .to the knife slide.

Referring particularly to the breasting knife and its actuating mechanism, as shown inFig. 1', thelknife ismounted upon a cross head 54 secured to the parallel vertical bars; 56. Near their lower ends the bars 56 areprovided with guideways in the. form of grooves 6611501 the reception of the actuator 24. The cross head 54 is arched somewhat and has provided in its front face recess 5'! extending upwardly from its lower edge toprovide clearance for the breasting knife. Thecross head 54 is also provided with knife supporting brackets 59 extending downwardly and inwardly from opposite sides of the cross head into position to engage opposite sides of the breastingfknife 20. The breasting knife has sliding engagement within 58 and 60 removably secured to the brackets 59. In order to expedite the removal of the breasting knife, the edge of the plate 58 adjacent to the cross head 54 is arranged to engage a shoulder in the cross head arranged at a slight angle. to] the side of the breasting knife, and the plate 58 is provided with a slot 62 for the reception of a clampingscrew 54 which slot is arranged in parallel. relation to said shoulder in order to permit the plate5 8 to move into and out of position to engage the breasting knife. In order to afford a vertical adjustment of the breasting knife an adjusting screw 65 is provided having interlocking engagement with the upper end of the breasting knife. At their upper ends the parallel bars 5% are slidably mounted in brackets 68 located atthe head of the machine column 10 and diverging forwardly therefrom' At their lower ends the parallel bars 55 are. slidably mounted in brackets 12 located approximately midway, of the height of the positionby position toengage the head of the screw: 4.4

from at thesame angle as the. brackets; 68,.

The knife. actuator 24 has a constant stroke imparted thereto bythe crank pinv42 (Figs. 1 and. 3) V which acts through or yoke 48; wing nut 46' and screw 44 as above described; Thescrew 44 is'pivotedlon a stud secured to the actuator:24. The: connecting link 48 is pivotally mounted'upon the cranktpin 42 and has upwardly extending arms (Fig. 1); which curve" outwardly for the reception of the win nut thereb'etween. A clamping block 16' (Fig. 1 is secured to. the vupper ends of the arms for clamping engagement with the wing nuti46. The

clamping block .16 is slidably supportedupon the. square headll-TI of the screw 44 by gibsl8 (Fig. 7);. formedintegrally with the clamping block 16. and extending upwardly therefrominto at itscorners. The clamping block 'IBhas a central opening formed therein". to provide clearance for the i screwi.44,'and the gibs 18 aretarranged to provideclearancee for therscrew 44 and. for the actuator: 24. The head 11 of: the screw .44 is slotted to=embrace the actuator (Fig; 3 As herein illustrated the actuator is in the form of a cross head slidably' mounted in grooves 66 formed in the parallel bars 56. The actuator is normallyheld at the limit of its e1evation"'by the torsion spring andconnections between the springs and the actuator comprising a pair the connecting link erably carried by a sleeve 51* (Fig 3) journaled j.

on the hub 53 of the connecting link 48 and is confined between thelink and a" disk secured to the end of the crank pin42. "In its elevated position the actuator supports the breasting knifeassembly by engagement with the parallel bars=5$" at vxthe upper extremities of the grooves 66* (Fig; *1). l 1

- In order that the actuator; whichhas a constant stroke, may impart to the breasting knife a variable stroke the extent of which is determined in advance of the stroke of the actuator, means is provided for adjusting the actuator in the direction of its stroke in order to provide a measured lost motion at the beginning of the stroke of the actuator. In the illustrated machine the adjustment of theactuator operates to measure a distance between the actuator and the lower extremities of the grooves 66 which distance is equal to the difference betweenthe extent of the stroke of the actuator and the extent of the required breasting cut.. The adjustment of the actuator is arrested by the engagement. of the shank presser 26 with the shank of the, shoe to bebreasted. During theadjustment of the actuator the breasting knife assembly descends with the actuator until said assembly is arrested by engagement of the edge of the knife with the heel tread, and during the remainder of its adjustment the actuator travels downwardly through the grooves 66 and comes to rest with the bottom of the actuator a predetermined distance above the lower; extremities of the grooves 66 which distance determines the extent of the lost motion of theactu ator. The point at. which the actuator comes to rest is determined by the engagement Of; the shank presser 26 withthe shank of the shoe to be breastedl Thusit will bet-seen that the-glost crank pin 42to the actuator.

motion of the actuator is accurately measured by the engagement of the shank presser 26 with the shank of the shoe to be breasted. The extent of the lost motion may be varied by a vertical adjustment of the breasting knife relatively to the knife supporting cross head 54 whereby the engagement of the. edge of the knife with the heel tread may begaged to take effect at the desired the knife actuator.

Should the weight of the knife assembly be sufficient to cause a slight penetration of the heel by the breasting knife as it comes to rest on the heel tread, such penetration of the heel by the breasting knife would be inconsequential since the descent of the knife incidental thereto would be accompanied by a, like descent of the shank presser thereby reducing that descent of the shankpresser which occurs after the breasting knife comes to rest on the heel tread and proportionally increasing the lost motion-of the actuator. Such increase of lost motion would,

,of. course, be followed by a corresponding decrease in the effective stroke of' the actuator. It will thus be seen that a penetration of the heel tread by the breasting knife as it comes to rest thereon cannot throw out of adjustment the devices for measuring the knife stroke.

"The adjustment of the actuator, above referred to, is arrested at the end of the spring clamping of the shank presser hereinafter described and in advance of the locking of the wing nut 46 which operates to connect the Consequently the elevation of the actuator at the beginning of its stroke is determined by the final elevation of the bottom of the shank of the shoe to be breasted. The length of the stroke of the actuator being constant, it follows that the limit of said stroke is also determined by the final elevation ofv the shank and, consequently, the limit of the knife stroke is-likewise so determined. It follows that the knife, when properly adjusted by the hand screw 65, will come to rest with its cutting edge positioned accurately at the base of the heel.

Referring now more particularly to the construction of the illustrated machine, the adjustment of the actuator is effected by the succes-, siveoperation of the .treadle 90 and the spring clamping mechanism hereinafter described. The treadle 90 depresses the actuator 24 through connections comprising a treadle spring 92 (Fig. 1) and a foot piece 88 mounted in the lower end of a post 84 and arranged to rest on the hub of one of the links 80. The treadle spring 92 connects the lower end of the post 84 to a lug 94 formed in the treadle 90, the post 84 being, slidably mounted in a sliding head 86 which forms a part of the power clamping mechanism. The stroke of the actuator 24 is effected by the crank pin 42 at the forward end of the driving shaft through connections hereinbefore described. In order that the adjustment of the actuator may be limited by the engagement of the presser 26 with the shank of the shoe to be breasted, the presser is mounted in the post 84 through which the adjustment of the actuator is effected. As the treadle 90 is depressed the post 84 slides downwardly through the sliding head 86 and the foot piece 88 depresses the actuator 24 against the resistance of the torsion spring 50. The breasting knife assembly moves downwardly with the actuator 24 and the post 84 until the downward movement of the knife assemblyis arrested by the engagement of the point in the adjustment of knife 20 with the tread face of the heel. The shank presser 26 being secured to the post 84, the knife 20 and the shank presser move downwardly in unison during the first stage of the depression of the treadle 90 and consequently I their'relation to each other is unchanged until the downward movement of the knife is arrested byits engagement with the heel of the shoe. Continued depression of the treadle thereafter causes the shank presser to move downwardly relative to the breasting knife and causes a movement of the actuator 24 relatively to the parallel bars 56 of the knife assembly as permitted by the grooves 66 in the bars 56 in which the ends of the actuator are arranged to slide vertically.

Referring now to the screw nut 46,-during the depression the screw 44 passes through the wing nut 46 and. the nut spins upon the screw in order to accommodate itself to such movement thereof, the pitch of the screw threads being such that the screw may pass freely through the nut while the nut'is maintained at a fixed elevation. The wing nut 46 may be supported in any convenient manner. In the illustrated machine means for supporting the nut consists of an arm 96 (Fig. 1) pivoted to an extension of the connecting link 48, a yoke 98 pivotally mounted on the arm and arranged to embrace the hub of the wing nut 46, and a pair of rolls I60 (Fig. '7) carried by the ends of the yoke 98 and extending inwardly therefrom into a concentric groove formed in the hub of the wing nut, said rolls acting as carriers for the nut and permitting the nut to be rotated freely by the screw 44 as it passes therethrough. The wing nut 46 is normally held in contact with the under surface of the clamping block I6 by a coiled spring I02, (Fig. l) the lower end of which is mounted on the forward extension of a pivot pin I 64 (Fig. 3) upon which the yoke 98 is mounted and the upper end of which is mounted upon a stud I06 extending forwardly from the clamping block I6. In order to hold the nut 46 out of contact with the clamping block 15 during the depression of the shank presser 26 a cam I08 is secured to the free end of the arm 96 and arranged to engage a roll IIU carried by the disk 55 secured to the crank pin 42, the free end of the arm 96 being offset forwardly to bring the cam I98 into position to engage the roll III] (Fig. 3). The cam I08 is so arranged relatively to the roll that the machine comes to rest with the rise of the cam in contact with the roll, and the rise of the cam is extended sufficiently to hold the wing nut .46 out of contact with the clamping block I6 until the power compression of the shank presser 26 has been effected. As the roll II I) rides off the rise of the cam I08 the spring I02 swings the arm 96 about its pivot and brings the clamping surface of the wing nut into contact with the under surface of the clamping block 16. Downward movement of the clamping block after the wing nut has been thus brought into contact therewith clamps the nut and the block, thus completing the connection between the crank pin 42 and the actuator 24 whereby a constant stroke is im parted to the actuator.

It is desirable that the shank presser be arranged to engage the shank of the shoe to be breasted close up to the breast of the heel and it is also desirable that the shank presser be arranged for self adjustment to varying inclinations of shanks. In the illustrated machine the 44 and the wing of the actuator been stated, the'pendants I16 are equally bell crank lever ratchet teeth formed in the presser post and heel plate post, respectively. The ratchet teeth and their pawls are arranged to engage during the downward movement imparted to the slid-' ing' head 86 by the power spring 34. The pawls are mounted in pendants I16- (Figs. 2 and 15) pivotally mounted upon a rocking carrier I18 which in turn is secured to a rod I carried by the sliding head 86. The pawls are arranged to slide in sockets I8I in the pendants I16 (Fig.

l5) and are spaced apart a 'distance,-measured 15 in terms of ratchetteeth, equal to one-half a tooth more than a prescribed number. The

pawls" I10 are actuated by compression springs I82 seated 'atithe base of the sockets I8I and I, the range of movement of each pair of the pawls 20 I10 is limited by a block I84 secured within a groove formed in its pendant I16 and arranged to engage shoulders formed on the pawls by slabbing oil a portion of each pawl as shown at I11 in Fig. '15. Said blocks I84 also operate to prevent rotation of the pawls thereby maintaining them in position properly to engage with the ratchet teeth. In order to maintain the pendants I16 in alinement with the presser post 8 4'and-the heel plate post I62, respectively, said pendants have forward extensions I88 which are bifurcated to permit them partially to embrace said posts (Figs. 2 and 4).

In order thattlie pressure of the spring 34 may be distributed between and preferably imparted equally to the presser post 84 and the heel plate I62 the pendants I16 are arrangedat opposite sides of the rod I80 and equally spaced therefrom. The pendants are pivoted between a. cross head I formed integrally with the carrier I18 midway'between'i'ts ends and ears I 86 projecting laterally in opposite directions from opposite ends of the carrier. In order to maintain'the pawls I10 normally disengaged from their ratchets a coil spring 200 is secured at one end to an extension 20I' (Fig. 4) of the sliding head 86 and at its'op'posite end to the carrier I18 whereby saidcarrier is urged away from the posts 84 and I62. The presser' post84 and heel plate post I62 are thus permitted to be retracted at the end of a cycle of operations without interference from the pawls I 10 i In order to bring the pawls into ratchet engaging position prior to the release of the power spring 34 and to maintain them in such posi tion during the cutting stroke of the knife a bell crank lever 202 is pivoted on an extension 204 of the sliding head 86 '(Figs. 2 and 4) and has" freely mounted at the ends of its vertical arms across pin 206 having a V-shaped notch formed therein (Fig. 4) for the reception'of the wedged end of the rod I80. The rod is held against the cross pin by the spring 200'. The V-shaped notch, acting on the wedged end of the rod, yieldingly holds the cross head I90 of the carrier I18 horizontalwhile permitting the carrier torock sufficiently to distribute the pressure of the power spring 34 between the presser post 84and the heel plate post I62. As has spaced from the rod I80 and consequently the I18 acts as an equalizing lever during the actuation of the spring 34to cause the force of the spring to be distributed equally between the presser post 84 and heel plate post I62. The 202 is actuated by a cam 208 lever 2! 6 is arranged to'actuate rod I64. The lever '2I6 ispivoted to the-machine frame by a shaft 2I8' and carries'at its' Wing nut 46 the pawls and yieldingly supported 'ber, for example; upper end of a vertical arm rigid with the arm 236 by formed in the tube 234. tation of the tube 234 carrier (Fig. 3) secured to the driving shaft 40 by connections comprising a link 2I0 pivoted at its upper end to an arm 203 of the bell crank lever 202 and at its lower end to a horizontal arm of a bell crank lever 2I2.- The vertical arm of the bell crank lever 2I2 carries a cam roll -2I4 arranged to ride on the 'cam 208.

It will be seen 1" thatthe cam roll 2I4 will be held toward thef cam 208 by'the tension 0f the spring 200 which actson the pawl carrier I 18. In order-to elevate the sliding head 86 and at the same'time to compress the power spring '34 a triangular the connecting lower'end a cam roll 220 arranged" to ride on a cam 222 secured to the shaft extremity, as seen in Fig.3, the lever 2I6- is pivoted to the lower end -"of the connecting rod I64. In order to provide a' bearing for the bell crank lever 2I2 the shaft 224 connecting the triangular lever 256 and the connecting rod I64 is extended sufficiently to permit said lever to be pivoted thereto. In order toadjust the compression of the power spring-34 the collar 226 upon which the'lower end of the spring is seated is threaded on the connecting rod I64 and provided with sockets 228 for the reeption of a turning tool.

The timing of the cams 208 and 222 and the cam I68 which controls the clamping of the is such that the cam 206 "operates at the beginning of the power cycle to'b'ring I10 into ratchet engaging position and thereupon the cam'222 operates to'release the power spring 34, thereby permittingsaid spring to impart shank presser 26 and the heel tread plate 32, and after the a downward pressure to the 40.Z At itsforward power pressure has been eifect'ed the cam I08 operates to release the coiled spring I02, permitting the wing nut 46 to be'brought into contact with the clamping block--16. The

above-described timing ofthe cams 208, 222 and I03 is desirablesince it insures that thestroke of the breasting knife will be measured from the 'finalpositions of the shank and heel tread after the pressing means has operated to take all'the yield but of the sole and bring it down firmly against the last.

As herein illustrated, the jack 28 (Figs. 2 and 4) is mounted for straight line horizontal movement upon the jack carrier 30 (Fig. 4) which is slidably mounted upon the connecting rod I64 thereon by the compression spring 232 seated on the machine frame The connection between the at 233 (Fig. 3) jack and its carrier comprise a horizontal memthe tube'234, mounted at the 236 formed integrally with the jack 28.

a' strut 238 (Fig. 2)

The tube 234 is made one end of which is supported in asocket formed at the rear of the jack base and the other end of which is received within a recess or hole In order to permit roand a corresponding swinging movement of transverse adjustment of a shoe relatively to the breasting knife may be eilected, the tube is supported upon guide rolls 240 and 242 pivoted to'the jack carrier 30 and grooved for the reception of the tube. The roll 242 is positioned at the rear end of the carrier and above the tube 1 .234 andthe roll' 240 is' positioned beneath the tube and forwardly of the roll 242, thereby per-,

the jack 28 whereby mittingxthe'wtube to be2he1dz1in engagement withtrblockt 266iduringmheiiswingingof the. 1inks.;:: Be-i m thelguidelrolls v by? the: :weightifiof the jackzil'; Thenv tween the 'arcuate surfacesifihthe clamping block-.1 jack carrier 30:15 preventedtfromswinging-about .1266 is Iextended :downwardlysto: provide tgnidingrz i the iconnectingrod .1164 :by a bellcrahklever 244 surfaces 2'" for therlinks 160:: In ordento prevents (Fig.4) 1 pivotcd'torthe machineiframe-andhavanyplay of the shank'rl 58iof the-:yokeulfi between ingthetendwof its horizontal arm 246' pivotedwto' wtheflinks 160 a: hub 213"(Fig. 8) -is formed at thezm an ext'ension of the- .stud248 -iupon whichlithe end 0f-the1shank:.l58 and positioned between'theim guide'roH 240 i's pivotedila Theivertical arm 25fl iinnensurfaces .of the It is apparent that. v Of the bellcrank lever 244 15 provided with an I the clampingiof the1inks l 00 against the clampingtza; "adiustable abutmentscreww252i" arranged to en 'block' Zfifitvill lock the heel stop iifiainuadjustedi gage'cthe machine iframeiinl. orden- .to lirifitathe? position and preventanymovement thereof dliri-l upward movement :of the: jackwearrien'wlbymhe ing theibreasting operation; .It may 1 b t m a p in --2 3 The forward movementxof the ja k tnattheiorce of the clamping engagement of the 28i;s limited by theiengagementeithestrut 238w1 l |ag it .wth clamping l k 256 :is may *With the guide roll 24o: Inlits forwardiposition z s dib 'fheieutting thru t f th k ife; w 1 is p ven i om w g by t e' 'The heel stop 36 is normally lheldat the forgagement- 0f a'pair of guideurollsw2541fiFig; 4) ward limit of its Lmovement: by a, coiled springfl; with horizontal ribs 256: formed in the base of: z59:; s,.2 and 3 connecting t links ag a the jack at oppositesidesthereofj. Afith6iIifOr-" the lever V262; said pring 3130 wgperates wtg 4 ward ends the ribs 256 are terminated r a maintainv the: forward endof the lever ZBZ kat w d f -th f rward x mi y f the j k the -lim it of its elevation which limit is pre- I base in order-that -saidmibs may trav l 'by scribed by the -engagement of an adjus tablew uide ro1ls 254 as: the1=shoe is :brought into *abutment screw 21!] With-the machine frame breasting position, thus-permittinguaswinging-1":(Fi;%=3); By adjustingthes'crew 210 the rel-a: 25 movement 'of the jack zll within the hrnits pre-A t cmmm of t .base .Of. t h a :2 nl scribed by the guide r-o1ls 254uand thef forw-ard the'upper rf of the vzspm be det in extremity of the jaok base -The guide irolls.254i e Y V y w v y helpivotedllpon p fi Thka jack Zfmaybe-of any usualconstructionn jec pwa dly-'fromtheends" of-a yoke126fll As illustratedi -the jack comprises-a, toesupport Q -(Fig. D whieh in turn is secured to thiiorward 3212 (Fig. 27- mounted on a shank 214 "arranged. l 3

end o'fa lever 2S 2 (Fig--3) whi h-* w tmswingMDOn the jack arm 216. Verticalade limit theflownward movementofithefiackiunder justmentzof the toe support 212 may be effected the thrust 'of the power spring 34 Whichtalkesfli bylgljding t u znit r t pjvot blok effectafter the-Jack has been moved=..in:and the 1 zjaiandnthe t us may damped i m t 35* hee1 post 28 i has been broughttintowvertical justed: po ition by hand screw gggxm 1y W alinement with the forward end'of :thelever 2621*Lranged t'0 b1ingmthe Shank 1 m clamping, The lever:zz is'pivoted at 263:to the; machine gagement with arcuate ribs 282- formed in the framemln order to preventrotation'of'the'y0ke arm 216. The heel post 284" is mounted in a 25mg, grOOVGEEA (Fi-g. 4)'is iormedl in its lrea vertical hole in the jack base and supported surfa'ce for engagementwithitheforward enduof therein byengagement of 1 a shouldered-Surface i the'-1ever-262; Thmovement of the lever 232a 0f-13helpostwjjh;a, Seat q fl ntu incidental to the downwardfimovement of the l t n t ozga lformedqn t e ja kulba m S s d-"by thele gagement 0f: the The heel post 284 is provided at itsupper end links I60 iwithla c m i block ee (Fig'. 2).- with a short tapered last pin 2881Which permits 45-T1i1ink5 Wmconnect'thelealward fi a sho'e to be maintained in a horizontal posim lev'er 262 -and the shank 58 o y e 6-- tionduringthe swinging of the jack incidental pp ends of n snlsuware arrane dwtdthe transverse adjustment of -the shoe -relato engage the clampingblocki zfifi': (Figs: 2 and "tively to the breasting knife.

Wat Opposite sides'loif itslpivot fi b Inorder to adjust the preliminaryelevation of misuring an equaliclampine p e of lmks'l th'eQknifetQ peTmit its cutting edge tobeem w: lfifi again'st the clampingblocmw ployedyas gage determine the ,breastmg The engag ent of the base of the ja k w =position Ora shoe a stop 281-is provided (Figs-1) the lever 262 as a shoe is clamped in hreastmg'v far-determining th 11 m of t urmardlmoveposition by the powerspring 3 ,-Op r t to p ement of theknifeactuator 24 by the torsion ventdisplacement of the jack afterthe' shoehas spring. The 513011281 1 adjusted t l by h I 60' incidental to the adjustment of .sthe': heel been soclamped, and the cutting thrust 'of "thea hand screw 289 mountedin a'tapped hole in kn'ife operates to increase theforceof the'clamp u bracket ggg t forwardly ff n-the-ma ingengagem 0f the J HPOIYSaId-IBVCTV kchine frame'. The 'screw 28:! "isinclined out- I The action of the C p i ngflf wardlydnorder to providesufficient clearance I 60 6 fl s 1 also; i g ggfig z for a hand wheel 292 secured at its upper end. 60* 3 pint ee engaging p051 Ion v i t t v The stop 281'has a yoke, 296formed integrall 1-. thelponnectionjof.Jtheyoke msflwlthjflllei therewith and pivoted-to thev screw 289. Th: 3 In r to .a'cfzommodate W g stopmflfl is preferably .arrangedto engagewthe a block "266 to the swmglngmovementof the -11nks' hub oflone :Of the links: 80 w ich I connect the t ijoflmi Shoeiito ttorsion-spring 5D-and. theactuator- 24w iizg i gfiff gzi 233: 322? Fig-332) are Referringnowwto; the clutching mechanismsz-v formed in'theunderside ottheclarhpingblockt -1 a 0 0 any usuahcomforeng'agement with the ends of the linksnl60;! tm0t10n, XamD16n0ne0fth Hol'tfln pe, {1

*th'e-1'ad'lus of curvature of saidzeurfaces bein providedkfor' connectmg the wheel and 70 substantially the sameas themadiu i u o w drivingishaft 4i). When the machine is at rest describedby the ends of :theilinks i505 Thus: it Ethe clutch wfl is maintained in unclutchedconwillzibe seennthat a constantrspaced relation is dition loya stop arm'fim securedtoa rock shaft maintained lbetweenvthd upper ends ofwthe 304 and arrangecl to engage' under a projectionon the toggle bearing 323 and arranged to be enpurpose of illustration let it be assumed "bring the cutting edge of l the shank presser disengaged from the projection 306 by the treadle '90 after the treadle has brought the shank presser 28 into shank engaging position. The stop arm 332 is automatically returned to operative position before the driving shaft 40 has completed one rotation. The return of the stop arm 302 is effected by mechanism comprising a cam 3.68 (Fig. l) secured to the driving shaft 40 and arranged to straighten the toggle 3H], 3E2 by engagement with an extension 3M of the toggle link 3| 2.- Straightening of the toggle swings an arm 3H5 secured to the rock shaft 304 rocking said shaft in a direction to return the stop arm 302 into position to be engaged by the projection 303 of the clutch 360 whensaid projection reaches its starting position. In order that the treadle 93 may operate to break the toggle 3H], 3| 2 and thereby actuate the rock shaft 304 to disengage the stop arm 332 from the projection 306, a catch lever 3! is pivoted gaged by .a plate 322 secured to the treadle. The engagement of the plate 322 with the catch lever 3|8 is timed to take effect after the treadle has brought the shank presser into engagement with the shank of the shoe to be breasted. The

catch lever is maintained in position to be engaged'by the plate 322 by a spring 324 whichoperates to maintain the upwardly extending arm of the catch lever in engagement with the hub of the toggle link 3| 0. ates to maintain the condition determined abutment screw 326 carried by the toggle link 3l0 with a stop 328 formed in the machine frame. In order to disengage the catch lever 3l8 from the plate 322 and permit the straightening of the toggle in advance of the retraction of the treadle, the catch lever is provided at its upper end'with a pin 33B extending forwardly into a position to be engaged by the cam 308 at an early stage in the rotation of the driving shaft.

The rotating assembly is brought to rest at the end of a cycle of operations by a brake shoe 332 arranged to be engaged by an eccentric 334 fixed to the driving shaft 40. The brake shoe is pressed against the eccentric 334 by a spring 336 connecting the brake lever 333 and the machine frame, the range -of movement of the lever 338 being limited by a sleeve 340 carried by the spring 336 and arranged to abut the stud 342.

The operation is as follows: Preliminary to the depression of the treadle 9B the breasting knife 20 may be adjusted by the hand wheel 292 to the knife into the desired elevation for gaging the breasting position of the shoes to be operated upon. The jack 28 is then moved rearwardly of the machine with a shoe to be breasted mounted thereon. (For the that the shoe to be breasted is a ladys shoe having a heel of average height). If desired, theshoe is now adjusted transversely of the knife by swing- The spring 324 also opertoggle in a straightened ing the jack about its fulcrum 234. The treadle may now be operated to depress the actuator knife and the heel tread plate are arrestedby the heel tread. The actuator 24 and the knife slide 56 are now in the position illustrated in Fig. 11. After the breasting knife and heel plate have been arrested by engagement with the heel tread,

by the engagement of the,

26 descends alone until the.

presser foot engages the shank. Depression of slide, the extent of such sliding movement depending upon the height of the heel to be breasted and the adjustment of the breasting knife. At the termination of said sliding movement the actuator 24 is positioned, relatively to the knife slide 56, as shown in Fig. 12, the position of the slide remaining the same as in Fig. 11. Continued depression of the treadle 90 after the shank presser has been brought into contact with the shoe breaks the toggle 310, 3I2 thereby rocking the shaft'394 and thus disengaging the stop arm 302 from the clutch 300 and permitting the clutch to connect the wheel 38 to the shaft 40. During the initial stage of the rotation of the driving shaft'4ll the pawl carrier I18 is actuated by its cam 208 to bring the pawls I70 into operative position, and thereupon the cam 222 releases the'spring 34 sufiiciently to permit it to clamp the shank presser and heel plate upon the shoe to be breasted. The clamping pressure imparted to the presser and heel plate by the spring 34 operates to bring the base of the heel post 284 into clamping engagement with theupper surfaceof the lever 262 at its forward end, and through the actuation of said lever, the spring 34 operates to bring the links I60 into clamping engagement with the clamping block 266. At this stage in the operation of the machine the actuator 24 is in a position relative to the knife slide 56 such as that shown in Fig. 13, the actuator having advanced from its position, as shown in Fig. 12, an amount equal to the depression of the shank presser 25 by the spring 34. During the continued rotation of the driving shaft after the clamping operations have been effected the cam roll H3 rides off the rise of the cam I08 thereby permitting the spring N32 to bring the wing nut 46 into contact with the clamping block 16, and the downward movement of the clamping block with thecrank pin 42 clamps ersing its lost motion (indicated at A in Fig.

l3), and during the remainder of the advancing stroke of the crank pin, imparting a measured cutting thrust to the breasting knife. It will be seen that the knife decelerates as the crank pin 42 approaches the bottom of its stroke and comes to rest as the crank pin arrives at dead center. Consequently, the knife slide has no appreciable momentum as it comes to rest at the end of its advancing stroke and, therefore, there is no tendency of the knife slide to overthrow and carry the breasting knife beyond the base of the heel. The actuator and knife slide are now in the position illustrated in Fig. 14. Dur ing the return of the crank pin from dead center to its initial position the clampng block 16 travels slightly in advance of the Wing nut 46 leaving the nut free to rotate upon the screw 44 in order to return to its elevated position. During the same interval the cam roll 2l4 rides off the rise-of the cam 2B8, thereby permitting the spring 200 to retract the pawl carrier H8, thus disengaging the pawls I10 from their ratchets. After the retraction of the pawls I70 the torsion spring 50 operates to retract the knife actuator 24 and with it the breasting knife 20,.

the shank presser 26 and the heel tread plate 32. As the driving shaft 40 approaches the end ofits rotation the cam 222 actuates' the triangular lever 216 to return the sliding, head 86 and the pawl assembly to elevated position, and simultaneously to compress the spring 34. As the crank pin 42 arrives at its initial position-the stop arm 302 engages the projection 306 of the clutch 30B, thereby disconnecting the wheel 38 from the driving shaft ill, and at the same time the eccentric 334. engages the brake shoe 332 and arrests the movement of the rotating assembly.

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 breasting knife, and a knife actuator arranged to provide a variable lost motion between the actuator and the knife at the beginning of the stroke of the actuator. I

2. In a heel breasting machine, a breasting knife, and a constant stroke knife actuator arranged to provide a measured lost motion, between the actuator and the knife at the-beginning of thestroke of the actuator.

3. In a heel breasting machine, a breasting knife, a knife actuator having a constant stroke, and connections between the actuator and the knife for imparting a variable stroke to the knife, said knife stroke terminating simulta: neously with the stroke of the actuator.

4. In a heel breasting machine, a breasting knife, a knife support, a knife actuator arranged to impart a variable stroke to the knife support, said stroke terminating simultaneously with the stroke of the actuator.

5. In a heel breasting machine, a breasting knife, 2. driver for imparting a variable stroke, to the knife, and connections between the driver, and the knife whereby the knife comes to rest at one limit of the stroke of the driver.

6. In aheel breasting machine, a breasting knife, a crank for imparting a variable stroke to the knife, and-connections between the crank and the knife whereby the knife comes to rest as the crank comes to one limit of its stroke.

7. In a. heel breasting machine, a breasting knife, a crank for imparting a variable stroke to the knife, and connections between the crank and the knife whereby the knife decelerates as it approaches the limit of thebreasting cut and comes to. rest as the crank comes to one limit of its stroke. f 8. In a power operated heel breastingmachine, a breasting knife, aknife actuator having a constant power stroke, connections between the actuator and the knife for imparting avariable stroke to the knife, said knife stroke terminating simultaneously with the stroke of the. actuator, and connections between the actuator andthe shank of the shoe to be breastedfor predetermining the position fromwhich the power stroke of the actuator commences. 9. In a heel breasting machine, a breasting knife, a knife actuator having a. constant stroke, connections between the actuator and the knife for imparting: a variable stroke to the knife, a shank engaging means, and connections between said shank engaging means and the actuator for predetermining the position from which the actuator operates. i

10. In a heel breasting machine, a breasting knife, a knife support, means for adjusting the knife relatively to its support, a knife actuator having a constant stroke, connections between the actuator and the knife for imparting a. variable stroke to the knife, a shank engaging member, and connections between said member and the actuator operable in conjunction with said knife adjusting means to predetermine the position from which the actuator operates.

11. In a heel breasting machine, a breasting knife, a slide in which the knife is secured, a knife actuator having a constant stroke, connections between the actuator and the slide for imparting a variable stroke to the slide, a shank engaging member, and connections between said member and the actuator for predetermining the position from which the actuator operates.

12. In a heel breasting machine, a breasting knife, a knife actuator, a shank engaging member, and connections from said member for measuring, in advance of the knife stroke, the effective stroke of the actuator.

13. In a heel breasting machine, a breasting knife, a .knife slide, and a knife actuator mounted in said slide and arranged for measured movement relatively to said slide.

14. Line heel breasting machine, a breasting knife, a knife actuator, means for adjusting the actuator in the direction of its stroke, and a knife slide upon which said actuator operates, said actuator andslide being arranged for relative movement in the direction ofthe knife stroke.

15. In a heel breasting machine, a breasting knife, a knife actuator, means for adjusting the actuator-in the direction of its stroke, a knife slide upon which said actuator operates, said actuator and slide being arranged for relative movement in the direction of the knife stroke, and means for determining the limit of the adjustment of the actuator.

16. In a heel breastingmachine, a breasting knife, a knife actuator arranged to be adjusted in the direction of its stroke and a shank en gaging member arranged to measure the adjustment of the actuator.

17. In a heel breasting machine, a breasting knife, a knife actuator arranged for adjustment in the direction of its stroke, and a knife supporting slide supported in its retracted position 'by said actuator and arranged-to descend with the actuator during its adjustment until th knife is arrested by the heel tread.

18. In a heel breasting machine, a breasting knife, a knife actuator arranged for adjustment in the direction of its stroke, a knife supporting slide sup-ported in its retractedposition by said actuator and arranged to descend with the actuator during its adjustment until the knife is arrested by the heel tread, and means for adjusting the knife relatively to the, slide in order to vary the point in the adjustment of the actuator when the knife is arrested by the heel tread. 19. In a power operated heel breasting machine, a breasting knife, a knife actuator, manually operated means for adjusting the actuator in the direction'of its stroke, a driver, and means for comiecting the actuator to said driver.

20. In a poweroperated heel breasting machine, a breasting knife, a knife actuator, a driver, means for connecting the actuator to said driver comprising a. screw carried by the actuator, a nut carried by said screw, connections between said driver and said nut, and means for locking, the nut upon said screw.

-21.' In a" power operated heel breasting ma chine, a breasting knife, a knife actuator, manually operated means for adjusting the actuator in the direction of its stroke, a driver, and connections between the driver and the actuator comprising a screw carried by the actuator, a nut-carried by the screw and arranged to be rotated by the actuator during its adjustment, and a connecting link between said driver and said nut whereby said nut is locked against rotation thus connecting said link to said screw.

22. In a power operated heel breasting machine, a breasting knife, a knife actuator, a driver, connections between the driver and the actuator comprising a screw carried by the actuator, a nut carried by the screw, a link carried by the driver and supported upon the Screw, inter-engaging clamping surfaces formed in the link and the nut, means for holding said clamping surfaces disengaged, and yielding means for urging said clamping surfaces into clamping relation.

23. Ina power operated heel breasting machine, a breasting knife, a knife actuator, a driver, connections between the driver and the actuator comprising a screw carried by the actuator, a nut carried by the screw, a link carried by the driver, interengaging clamping surfaces formed in the link and the nut, cam actuated means for holding said clamping surfaces disengaged, and yielding means for urging said clamping surfaces into clamping relation. 24. In a power operated heel breasting machine, a shank presser, means energized by the next preceding cycle of the machine and normally disconnected from said presser for applying pressure-thereto, and means for connecting said presser to said pressure applying means at the beginning of the power cycle.

25. In a heel breasting machine, a breasting knife, a knife actuator, a shank presser, and means energized by the next preceding cycle of the machine for applying pressure to said presser before the stroke of the actuator commences.

26. In a power operated heel breasting machine, a shank presser, a presser post, means energized by the next preceding cycle of the machine for applying pressure to said post, and means for connecting said post to said pressure applying means at the beginning of the power cycle.

27. In a power operated heel breasting machine, a shank presser, a presser post, means for applying power produced pressure to said post, and means for connecting said post to said pressure applying means at the beginning of the power cycle comprising a pawl and ratchet connection normally held disengaged, and power operated means for engaging said pawl and ratchet.

28. In a heel breasting machine, a shank presser, a presser post, a heel tread plate, a heel plate post, and connections from the presser post for supporting the heel plate post and for preventing rotation of the presser post.

29. In a heel breasting machine, a shank presser, a presser post, a support in which said post is slidably. mounted, connections between said support and a source of power, and means for releasably connecting said support and said post.

30. In a heel breasting machine, a shank presser, a presser post, a head in which said post is slidably mounted, connections between said head and a' source of power, and pawl and ratchet connections between said head and said post.

31. In a heel breasting machine, a shank presser, a presser post, a head in which said post is slidably mounted, a ratchet formed in said post,

a pawl arranged for engagement with said ratchet, a pawl carrier mounted in said, head, means for actuating said carrier to engage said pawl and ratchet, and means for actuating said head.

32. In a heel breasting machine, a shank presser, a presserpost, a head in which said post is slidably mounted, a ratchet in said post, a pawl arranged for engagement with said ratchet, and means 'for disengaging said pawl from said ratchet.

33. In a power operated heel breasting machine, a shank presser, a heel tread plate, and means for applying equal power produced pressures to said presser and plate.

34. In a power operated heel breasting machine, a shank presser, a heel tread plate, and a power actuated spring for applying distributed pressure to said presser and plate.

35. In a power operated heel breasting machine, a shank presser, a heel tread plate, and a power actuated spring for applying equal pressure to said presser and plate.

36. In a heel breasting machine, a shank presser, a heel tread plate, means for applying pressure to said presser and plate, and means for equalizing the pressure applied to said presser and plate.

37. In a heel breasting machine, a shank presser, a presser post, a heel tread plate, a heel plate post, and means for applying distributed pressure to said posts.

33. In a heel breasting machine, a shank presser, a pressezi post, a heel tread plate, a heel plate post, a head in which said posts are slidably mounted, connections between said head and a source of power, and releasable connections between said head and said posts.

39. In a heel breasting machine, a shank presser, a presser post, a heel tread plate, a heel plate post, a head in which said posts are slidably mounted, connections between said head and a source of power, and pawl and ratchet connections between said head and said posts.

40. In a heel breasting machine, a shank' presser, a presser post; a heel tread plate, a heel plate post, a head in which said posts are slidably mounted, a link connecting said head to a source of power, and pawl and ratchet connections between said head and said posts including a pawl carrier arranged for movement to equalize the pressure exerted on said pawls.

41. In a heel breasting machine, a shank presser, a presser post, a heel tread plate, a heel plate post, a head in which said posts are slidably mounted, ratohets on each of said posts, pawls arranged for engagement with said rat chets, a pawl carrier mounted in said head, a link secured to said head, and means for applying pressure to said link.

42. In a heel breasting machine, a shank presser, a presser post, a heel tread plate, a heel plate post, a head in which said posts are slidably mounted, ratchets in each of said posts, pawls arranged for engagement with said ratchets, a pawl carrier mounted in said head, a link secured to said head, means for applying pressure to said link, and means for disengaging said pawls from their respective ratchets.

43. In a heel breasting machine, a shank presser, a presser post, a heel tread plate, a heel presser, ta presser post,-wa heel tread plate, a

heel plate post, a head in which said posts are qslidably'mounted, and ine-ans for securing said postsagainst upward movement comprising ratchets on said posts, pawls for engaging said ratchets, pendants in which said, pawls are mounted, a pawl carrier on which said pendants are pivoted, said carrier being so mounted in said head that a downward pressure imparted to said head imparts an equal pressure to said pawls.

44. In a heel breasting machine, a shank plate post, a head in which said posts'are *slidably mounted, means for securing said posts against upward movement comprising ratchets on said posts, pawls for engaging said ratchets, pendants in which said pawls are mounted, a pawl carrier on which said pendants are pivoted, means for maintaining said pendants in alinement with said posts, and means for pivotally [mounting said carrier on said head whereby a downward pressure imparted to said headimparts an equal pressure to said pawls. 45. In a heel breasting machine, a shank presser, a presser post, a heel tread plate, a heel plate post, a head in which said posts are slidably mounted, and means forsecuring said posts against upwardmovement comprising ratchets on said posts, pawls for engaging said ratchets, pendants in which said pawls aremounted, a pawl carrier on which said pendants are pivoted, guides formed insaid pendants for engagement with said posts whereby said pendants are maintained in alineinentwith said posts. 1 i I I '46, In a heel breasting machine, a shank presser, a presser post,'a heel tread plate, a heel plate post, a head in whichsaid posts are slidably mounted, connections between saidposts and said head comprising in which said pawls' are mounted at opposite sides thereof, and a carrier shaft mounted in said head and arranged midway between said pawls. A

47. In a power operated heel breasting machine, a shank presser, a heel tread plate, means for applying power produced pressure to said presser and plate, and means for connecting said presser and plate to said power applying means at the beginning of the power cycle.

48. In a power operated heel breasting machine, a shank presser, a presser' post, a-heel tread plate, a heel plate post, means for applying power produced pressure to said posts, and means for connecting said posts to said pressure chine, a shank presser, a presser post, a heei tread plate, a heel plate post, means for applying power produced pressure to said pos ts means for connecting said posts to saidpressure applyingmeans at the beginning of the power cycle comprising pawl and ratchet connections normally held disengaged, and power operated 'means for engaging said pawls and their ratchets.

50. In a power operated heel breasting ma chine, a shankpresser, a presser post, a heel tread plate,'a heel plate post, means for applyingpower produced pressure to said posts, means,

for connecting said posts tosaid pressure applyingmeans at the beginning of the power ratchets in said posts, pawls for engaging said ratohets, a pawl carrier cycle comprising "pawl and ratchet connections normally held I disengaged, and cam actuated means for engaging said pawls and their ratchets."

51. In a power operated heel breasting machine, a shank presser, a presser post, a heel tread plate, a heel plate post, a head in which said posts are slidably mounted, ratchets on said posts, pawls carried by said head and arranged for engagement with said ratchets, yielding means for holding said pawls out of ratchet engaging position, andpower operated means for bringing said pawls into ratchet engaging position.

52. In a heel breasting machine, a breasting knife, a knife slide in which the breasting knife is mounted, yielding means for holding the knife slide in retracted position, and means for adjusting the retracted position of the slide.

53. In a heel breasting machine, a breasting knife, a knife slide in which the breasting knife is mounted, a spring for retracting the slide, a stop for limiting the operation of the spring, and means for adjusting the stop in order to vary the retracted position of the slide.

54. In a heel breasting machine, a shoe supporting jack yieldingly supported and arranged for straight line movement toward and from operative position; I

55. In a heel breasting machine, a shoe supporting jack, a jack carrier arranged to permit rotation of the jack about a horizontal axis ex tending longitudinally of the jack, and shoe bottom engaging means for clamping a shoe on the jack and thus holding the jack from rotating during the breasting operation.

56. In a heel breasting machine, abreasting knife, a shoe supporting jack, a jack carries arranged to permit a limited swinging movement of the jack whereby a jacked shoe is rendered laterally adjustable with relation to the' 57. In a heel breasting machine, a shoe sup porting jack'yieldingly supported upon the machine frame and arranged for straight line movement to carry a. jacked shoe into and out of breasting position, and a stop for limiting downward movement of thejack. -'58. In a heel breasting machine, a shoe sup porting jack, a jack carrier, and connections between the jack and the carrier comprising a cylindrical member secured to the jack and rollers journaled in the carrier constructed and arranged to permit rotation of said "cylindrical member. I 59. In a heel breasting machine, a shoe supportingjjack, a. jack carrier arranged to permit rotation of the jack abouta horizontal axis ex- .tending longitudinally of the jack means for preventing suchrotation when the jack is out of breasting position, and means for limiting such rotation when the jack is in breasting portingjack arranged for rotation about a horizontal axis extending longitudinally thereof, and a pair of rollers arranged to engage the base of the jack at opposite sides thereof in order toi limit such rotation.

62. In a heel breasting machine, a shoe supporting jack arranged for rotation about a horizontal axis extending longitudinally thereof, means for preventing such rotation when the jack is out of breasting position comprising ribs formed at the base of thev jack, and a pair of rollers arranged to engage said ribs, said ribs being terminated at their forward extremities in order to permit a limited swinging movement of the jack when in breasting position.

63. In a heel breasting machine, means for supporting a shoe in breastingposition, cornprising a toe support, a heel support, and a heel stop arranged partially to embrace the back of a. heel tobe breasted.

'64. In a heel breasting machine, means for supporting a shoe in breasting position, comprising a toe support, a heel'support, and a heel stop arranged to engage the back of the heel and yieldingly urged thereagainst. I

'65. In a heel breasting machine, means for supporting a shoe in breasting position comprising a toe support, a heel support, ,a stop arranged to engage the backv of a heel, and means actuated by the cutting thrust of the knife to lock the stop in heel engaging position.

66. In a heel breasting machine, means for supporting a shoe in breasting position including a heel stopv constructedand arranged for engagement with the back of the heel to be breasted, yielding means for urging the stop toward the heel, and means for securing the stop in heel engaging position.

67. In a heel breasting machine, means for supporting a shoe in breasting position including a heel stopconstructed and arranged for engagement with the back of the heel to be breasted, yielding means for urging the stop toward theheel, and means'actua'ted by the cutting thrust of the knife for locking the stop in heel engaging position.

68.v In a heel breasting machine, means for supporting a shoe in breasting position including a stop constructed 'and'arranged for en gagement with the back of the heel to! be breasted, means for. clamping the stop in heel engaging position. comprising clamping elements, and means actuated by the cutting thrust of the knife for imparting a clamping action to said clamping elements.

69. In a heel breasting machine, means for supporting a shoe in breasting position including a stop constructed and arranged for engagement with the back of the heel to be breasted, means for clamping the stop in heel engaging position comprising clamping elements one of which is movable with the stop, connections between the stop and said movable element, and a jack supporting lever connected at one end to said movable clamping element whereby the cutting thrust of the knife imparts a clamping action to said clamping elements.

70. In a'heel breasting machine, means for supporting a shoe in breasting position including a stop constructed and arranged for engagement with the back of a heel to be breasted, and means for clamping the stop in shoe engaging position comprising relatively adjustable clamp-' ing elements, and connections between the stop and one'of said elements whereby said clamping elements are adjusted by a movement imparted to the stop.

'71. In a heel breasting machine, means for supporting a shoe in breasting position including a stop constructed and arranged for engagement with the back of a heel to be breasted and normally held at the forward limit of its movement, means for clamping the stop in shoe engaging position comprising relatively adjustable clamping elements, and connections between the stop and one of said elements whereby said clamping elements are adjusted by a movement imparted to the stop.

'72. In a heel breasting machine, a heel tread plate for engagement with the tread of the heel to be breasted, and means for supporting a shoe in breasti g position comprising a toe support, a heel support, and a heel stop constructed and arranged partially to embrace the back of a heel to be breasted and supported upon the heel tread plate.

73, In a heel breasting machine, a heel stop arranged to engage the back of a heel to be breasted and arranged for self adjustment to the inclination of the rear face of the heel.

74. In a heel breasting machine, a heel stop arranged to engage the back of a heel to be breasted, and a carrier in which the stop is pivotally mounted whereby the stop is self adjusting to the slope of heel.

75. In a heel breasting machine, a heel stop arranged to engage the back of a heel to be breasted, a carrier in which the stop is pivotally mounted, and means for limiting the rotation of the stop whereby the heel engaging surface is always presented to the heel.

76. In a heel breasting machine, a heel tread plate, a heel stop arranged to engage the back of a heel to be breasted, a carrier in which the stop is pivotally mounted, and supporting connections between said carrier and heel tread plate.

77. vIn a heel breasting machine, a shoe supporting jack, and means for clamping a shoe upon the jack comprising a shank presser, a heel tread plate, and a heel stop.

.78. In a heel breasting machine, a shoe supporting jack, and means for clamping a shoe upon the jack, comprising a shank presser, a heel tread plate, a heel stop, means for simultaneously actuating said presser and plate, and means for yieldingly urging the stop against the back of the heel.

79. In a heel breasting machine, a shoe supporting jack, and means for clamping a shoe upon the jack, including a shank presser, a heel stop, means for actuating said presser, and means for yieldingly urging the stop against the back of the heel.

80. In a heel breasting machine, a shoe supporting jack, means for clamping the shoe upon the jack including a heel stop, and yielding means for urging the stop against the back of the heel.

81. In a heel breasting machine, heel engaging means arranged to engage the back of a heel to be breasted, and yielding means whereby the heel engaging, means is positioned to be engaged by the heel position. 7

82. In a heel breasting machine, a heel engaging member arranged to engage the back of a heel to be breasted, yielding means whereby said member is positioned to be engaged by the heel as it advances into breasting position, and

as it advances into breasting I ineansfor locking s'aid member-after the shoe porting jack, and means for clampinga shoe.

, the. cutting thrust of has been brought into breasting position-'- 83. In a heel breasting machine, a breasting knife, a heel stop arranged to-eng'age the back of: a heel to be breasted,-yieldin'g means whereby the stop is positioned-to be engaged by-theheelas it advances into-breasting position, andmeans actuated by the cutting thrust of the knife for locking the stopafter the shoe has been brought into breasting position. i

84. In. aheel breasting machine a shoe sup porting jack, and means for clampinga shoe thereon comprising a shank presser, power operated means foractuating said pressed, and a heel stop. arranged to engage the back oflthe heel and yieldingly urged thereagainst; w

'85. Inaheel breasting machine, a shoe. sup

thereon comprisingashank presser, a heel tread plate, means for simultaneously applying. a a clamping pressure to said presser and plate, and a heel stop arranged'to engage the back of the heel and yieldingly urged thereagainst.

i 86. In a heel breasting machine, a shoe sup-- porting jackymeans for clamping a shoe thereon comprising. a shank presser, a heel treadplatd; means forv applying. an equal clamping. pressure to said presser and plate, andxa heel stop arranged to engage the back of the heel and yieldingly urged thereagainst; a I

87. In a heel breasting machine, a shoe supporting jack, a heel stop, and means actuated by theknife for locking the heel stop in heel engaging position.

88. In a heel breasting machine, a shoe supporting jack, a heel stop, and means actuated by the cutting thrust of the knifefor simultaneously clamping the jack in breasting position and locking the heel stop in heel engaging position.

89. In a heel breasting machine, a shoe supporting jack, a heel stop, means actuated by the cutting thrust of the knife for simultaneously clamping the jack in breasting position and looking the heel stop in heel engaging position, said means comprising a lever arranged to be actuated by the jack, clamping surfaces formed in the lever and jack, clamping devices arranged to be actuated by said lever, and connections between said devices and the heel stop.

90. In a heel breasting machine, a shoe supporting jack, a heel stop arranged to engage the.

shoe is brought into breasting position, and

means actuated by the cutting thrust of the knife for simultaneously clamping the jack in breasting position and locking the stop in heel engaging position.

91. In a heel breasting machine, a breasting knife, a shank presser, a heel tread plate, and yielding means for holding said members in retracted position.

92. In a heel breasting machine, a breasting knife, a knife actuator, yielding means for holding the actuator in retracted position, connections between the actuator and the knife for holding the knife in retracted position, a shank presser, and connections between the actuator and the presser for holding the presser in retracted position,

93. In a heel breasting machine,.a breasting knife, a knife actuator, yielding means for holding the actuatorin retracted position, a shank presser, a presser post, connections between said post and the actuator for holding the presser retracted position, a heel tread plate, and connections between the heel tread plate and said post for holding the plate in retracted position.- 94. In a heel breasting machine, a breasting knife, a knife actuator, a driver for impartinga constant. stroke to said actuator, yielding means. mounted'on the driver for holding the actuatorzinretracted position, connections between the actuator and the knife forholding the knife in retracted position, a shank presser, a presser post, connections between the actuator and: saidupost for holding the presser in retracted position, a heel tread plate, and connections between .said post and the heel tread plate for holding the plate in retractedposition. .95*.-.In' a power operated heel breasting. machine, ashank presser, a spring foractuating said presser, and power actuated means for en-= ergizing said spring at the end of the machine.

cycle.

96. In a power operated heel breasting machine, a breasting knife, a shank presser, a spring for actuating said presser, andpower actuated means for. energizing said spring during 98. In a power operatedheel breasting machine, a breasting knife, a shank presser, ac-

tuating means therefor, and a driver for successively releasing said presser actuating means and actuating said knife.

99. In a power operated heel breasting machine, a breasting knife, a shank presser, a spring, means operable to connect the spring and the presser, and a driver for successively actuating said connecting means, releasing said spring and actuating said knife.

100. In a power operated heel breasting machine, a breasting knife, a shank presser, a spring, means operable to connect the spring and the presser, and a driver for successively actuating said connecting means, releasing said spring, actuating said knife, and energizing said spring.

chine, a breasting knife, a knife actuator, a,

driver therefor, and a treadle for successively imparting a preliminary adjustment to said actuator and connecting said driver to a source of power. I I

102. A heel breasting machine having, in combination, a breasting knife, a shoe supporting jack arranged for straight line movement to bring a jacked shoe into position tobe operated upon by the knife and arranged for movement to permit lateral adjustment of the shoe relatively to the knife, a shank presser, a heel tread plate, means for. applying pressure to said presser and plate, a knife actuator, a driver therefor, and connections between the actuator and the knife for imparting a variable stroke thereto.

103. A heel breasting machine having, in complate, aknife actuator, a driver therefor, and

connections between the actuator and the knife for imparting a variable stroke thereto.

104. A heel breasting machine having, in combination, a breasting knife, a shoe supporting jack, means for preliminary adjustment of the knife in the direction of its stroke, a shank presser, a heel tread plate, means for applying pressure to said presser and plate, and means for'imparting a variable stroke to the knife.

105. A heel breasting machine having, in combination, a breasting knife, a shoe supporting jack, a shank presser, a heel tread plate, means for imparting equal pressure to said presser and plate, means for varying said pressure, and means for actuating the knife.

106. A heel breasting machine having, in com-' bination, a-breasting knife, a shoe supporting jack, a shank presser, a heel tread plate, an actuator for imparting a variable stroke to the knife, and yielding means for holding the knife, the actuator, the presser and the heel tread plate in retracted position.

107. A heel breasting machine having, in combination, a breasting knife, a shoe supporting jack, a shank presser, a heel tread plate, an actuator for imparting a variable stroke to the knife,yielding means for holdingthe knife, the actuator, the presser and the 'heel tread plate in retracted position, and means for limiting the operation of said yielding means in order to predetermine the retracted positions of said members.

108. A heel breasting machine having, in combination, a breastingv knife, a shoe supporting jack, means for clamping a shoe on the jack comprising a shank presser, a heel tread plate, a heel stop, means for applying pressure to said presser, plate and stop, and means for imparting a variable stroke to theknife.

109. A heel breasting machine having, in combination, a breasting knife, shoe supporting means comprising a toe support, a heel support and a heel stop, a knife actuator, driving means therefor, and connections between theactuator and the knife for imparting a variable stroke thereto.

110. A heel breasting machine having, in combination, a breasting knife, a shoe supporting jack arranged for movement to bring a jacked shoe into position to be operated upon by said knife, a shank presser, means for imparting pressure thereto, a knife actuator, and connections between the presser. and the actuator for measuring the effective stroke of the actuator.

111. A heel breasting machine having, in combination, a .breasting knife, a shoe support, a shank presser, means for applying pressure thereto, a knife actuator, connections between the presser-and the actuator for measuring the effective stroke of the actuator, a driver for the actuator, and means for connecting the driver and the actuator at a predetermined point in the operative cycle.

THOMAS H. SEELY. MILTON H. BALLARD.