US1289652A

US1289652A - Machine for breasting the heels of roots and shoes.

Info

Publication number: US1289652A
Application number: US1610215A
Authority: US
Inventors: Louis A Casgrain
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1915-03-22
Filing date: 1915-03-22
Publication date: 1918-12-31
Anticipated expiration: 1935-12-31

Description

L. A. CASGRAIN.

MACHINE FOR BREASTING THE HEELS 0F BOOTS AND SHOES.

APPLICATION FILED MAR.22. 1915.

Patented Dec. 31, 1918.

I 4 SHEETS-SHEET 1.

L. A. CASGRAIN.

MACHINE FOR'BREASTING THE HEELS 0F 5001s AND SHOES.

APPLICATION FILED MAR. 22.19I5.

4 SHEETS-SHEET 2- Patented Dec. 31, 1918.

I II i i L. A. CASGRAIN.

MACHINE FOR BREASTING' THE HEELS 0F BOOTS AND SHOES.

APPLICATION FILED MAR. 22. 1915- Patented Dec. 31, 1918.

4 SHEETS--SHEET 3.

z z 2: g 0 %M 868 l/EN TUFZ L. A. CASGRAIN.

MACHINE FOR BREASTING THE HEELS 0F BOOTS AND SHOES.

APPL1CAT|0N FILED MAR. 22. 1915.

Patented Dec. 31, 1918.

4 SHEETS-SHEET 4.

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A. CASGBAHG', @L" BEVERLY, HASSACHUfiETTS, ASSTGNQE, BY EESNE AEZ ESIQIELT- HENTS, llfi) SHE MACHINERY CtlBlPtMP-ATL'QEJ", @E PATE'EJSQDN, NEW J A CQEPMTTN @35 NEW JERSEY.

BEEASTTNG THE HEELS @F BQGTS ANT) SHQES.

Specification of Eettcrs Patent.

Patented nee. at, this.

Application filed Ilorch as, 2915. serial No. with.

To all whom c"? may concern:

Be it known that T, Louis A. Cascrzanv, a

citizen of the United States, residing at Beverly, in thecounty of Essex and State of Massachusetts, have invented certain improvements in Machines for Breasti'ng the Heels oil Boots and Shoes, of which the dollowing description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

. This invention relates to machines for use in the manufacture of boots and shoes and is herein shown as embodied in a mmhine for breasting heels.

The general object of the invention is to produce a breasting machine which will perform'its work more rapidly and accurately than has been possible with prior machines and one upon which the best class of work may be produced by an operator who is comparatively unskilled.

Tn the use of prior machines the chips which are severed from the heel breast n the breasting operation have been allowed when completely severed to fall at random upon the floor, and when, as is often the case the chip is not completely severed but still clings more or less securely to the heel along the shank the operator has been obliged to seize and tear the chip fromthe shoe at the expense of considerable time and annoyance. it has been proposed, I am aware, to employ mechanism such as is shown in United States Letters Patent No. 958,306, granted May l7, 1910, to Thomas Gr. Plant. This mechanism, however, is not as efi'ective as may be desired when the chip clings to the shoe along the shank by fibers or unsevered leather.

An important feature or? the present invention consists in improved means for seizing the chip which hasheen comtely or partially severed by the loreasting iieand removing it iromthe shoe. The chi removing means preferably moves toward and from the shoe with the hreasting knife. @ne

of the members between which the chip is seized and held and which is operated to remove the chip from the shoe may conveniently be the knife itself, another mom her being provided to hold the chip against the life during its return stroke and cansing the chip to he removed from" the shoe. Machines of this type are usually provided with a shank stop or hunter which comes in contact with the shank of the shoe during the operation of the knife and cotiperates with means for arresting the stroke of the knife. The shank stop or hunter may conveniently be employed as the member which coiiperates with the knife to seize and hold'the chip during the return stroke of the knife. In the construction shown the end of the shank stop is forced against the heel loreast prior to the completion of the breasting cut and is held there during the remainder of the cutting and during the return of the knife. In the construction shown the end of the shank stop is extended laterally to form a foot. The face which is next the heel is inclined away from the breast so that the lower rear edge of the foot engages the heel breast adjacent to the shank, thereby clamping the chip against the beveled edge portion of the knife at the bottom of the chip, and insuring its complete removal. The foot is formed to engage the chip close to the side portions of the shank and by reason of this formation and because of the concave form of the knife it bears upon the chip most forcibly adjacent to the corners of the heel breast where the chip is most likely to cling to the shank, and, therefore, insures the removal of the ;n arts of the chip adjacent to the edges of to shank and avoids separation of the layers which compose the chip, as might occur if the chip were not seized along its lower edge.

Another feature of the invention consists in improved means for releasing the chip from the chip removing means. In the construction shown this is efi'ected by movement of the work support. As the work support is swung outwardly for the removal of the shoe means is operated for moving the foot away from the knife to release the chip, and at the same time means is operated to unlock the foot from its carrier member, permitting it to drop to normal position. The dropping of the foot insures that the chip will be shaken off of the foot if it should show any tendency to cling thereto.

Another feature of the invention conslsts in means for directing the chip after it s released by the chip removing means. Th s may comprise, as shown, a chute which is attached to the jack post and whlch, by movement of the jack outwardly to release the chip, is carried; into position under the chip removing mechanism to receive the chip when dropped, and directs the chip into a suitable receptacle. Another feature of the invention is found in the construction of the foot of the shank stop. This foot is provided with bearing surfaces at its lateral ends only so that it engages the sides or marginal ortions of the shank, and the ressure whic is apphed to the foot, there ore, tends to bend the sole transversely and bring the shank portion of the sole against the wood of the last. This is of importance as the knife edge has a concavity correspondin to the transversecurve of the last at the s ank, and hence corresponds to the curve of the shank portion of the sole when the sole is made to conform to the last. The shank, however, has a te'nd ency to be more nearly flat than the last, and

. hence the knife may cut into the shank at the sides before it severs the chip at the center. Hence, the shank should be firmly held to the last at the side portions during the breasting operation. In some shoes, especially womens, the shank stifiener forms a ridge down the central portion of the shank, and the shank stifl'ener is not alwa s uniformly placed in different shoes. The'fbot described straddles the stifi'ener and bears upon.the

, sole at each side thereof, so that its action is shoe and not affected by the presence of the shank stifiener or by slight displacement of the stiffener. This form of foot is well adapted also for breasting shoes which have a shank molded with oppositely inclined side ortions which meet to form a ridge exten ing longitudinally of the shank. This is known as the cottage roof shank. Furthermore,

the foot is referably mounted upon an axis extending engthwise of the shoe so that it may rock laterally to accommodate itself to the lateral inclination of the shank of the ualize the pressure upon the two sides of t e shank. In the construction shown means is provided also for increasing the pressure of the foot against the shank just prior to the completion of the breasting cut to insure that the shank portion of the sole will be brought firmly against the last.

This means may com rise a spring, the tension of which is apphed to the foot prior to the tripping of the knife to discontinue its cutting action.

'Another feature of the invention consists in novel means for positioning and holding width of the heel meaa the shoe for the operation of the knife. In

the construction shown two fingers, which are preferably connected together for. equal and o posite swinging. movement, are moun under the plate of-themachine corners of the top lift, and to limit the forward longitudinal movement of the heel and shoe, thereby determining the amount to be removed from the heel by the breasting knife. Mechanism is provided for separating the fingers age them from the heel and to then retract e fingers outof the -,path of the breasting knifean'd also to lock them in retracted position until the shoe is removed from the machine. The fingers.

have a normal degree of se aration substantially equal to the width 0 the heel,..a'nd an adjustment is 1provided to vary the normal separation of t e fingers to correspond to the eing treated." An adjust-ment is also provided to vary the positions of the fingers longitudinally of the heel so that a greater or less amount of materialmay be removed from the breastend' of the heel. Furthermore, in the construction embodying the present invention this adjustment may be efiected without disturbingin any we y the operation of the mechanism for separating and retracting the fin rs. I

Another feature of the invention consists 1 in shoe supporting and holding means which comprises a trea plate, a resiliently supported last post which may be moved. into and out of position beneath the tread plate, means for locking the post against downw-ard movement, which is efiective when the post is in positionbeneath the tread plate, and means for applying ressure to the tread plate to clamp the s cc against the post. This construction enables the operator to position the shoe on the support and then press the shoe down sufliciently to to swing beneath the tread plate.

is then released and risesuntil the tread face of the heel engages the tread plate, the shoe being then locked against downward movement.

Another feature of the invention consists in the combination with the positioning fingers of shoe supporting and holding means which comprises a tread plate, aedepressible post or spmdle which is held against depression to support the last when the heel of a shoe is positioned against the tread plate, and means for applying pressure to the tread plate. The shoe is placed upon the supporting post, depressed, and swung into p eifmit it esho'e position beneath the tread late. FVhen thus positioned and released t e heel rises between the positioning fingers and against the tread plate and the post is locked against depression. The heel is now held under light pressure against the tread plate and is drawn forward to bring the corners of the heel breast into contact with the positioning fingers which determine the amount to be removed from the heel. When the machine is. started pressure, which is created by power operation of the machine, is caused to press the tread plate firmly against the heel.

Another important feature of the invention consists in novel means for holding the knife and particularly in means for holding to shape or shaping a thin, flexible knife which is not rigid enough of itself to withstand, without bending, the required cutting operation. This means may comprise a member having a surface which supports a substantial portion of a face of the knife, preferably its front face which is usually concave, and means for clamping together the marginal portions of the knife and member to hold the knife to the member. The knife may with advantage have a curvature which difi'ers from that of the memher, so that the clamping means will shape the knife to the member, which then becomes a forming member. Usually the curvature. of the forming member will be greater than that of the knife. but in case a flat knife is required the forming member will be fiat while the knife itself will be given a slight curvature, so that when the knife and the forming member are clamped together along their margins the knife will be straightened, and the engaging surfaces of the knife and forming member will be held firmly in contact.

Another feature of the invention consists in means for absorbing or storing up the energy due to the momentum of the moving parts of the knife operating mechanism during their upward or idle stroke and for utilizing that energy during the succeeding or operative stroke to apply pressure to the work clamping and holding means. As shown, the work holding means comprises a tread plate having a roughened lower face to engage the tread face of the heel, and a work support which is held against depression and sustains the Work to withstand the pressure of the plate. A portion of the energy stored may, as in the construction shown, be utilized to overcome the inertia of the knife carrier and connected parts during the first part of the operating stroke, and the remainder of the energy may be caused to apply clamping pressure to the work.

These and other features of the invention, including more important details of construction and combination of parts, 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.

Figure 1 is a side elevation of the machine;

Fig. 2 is a detail view, partly in section, of a portion of the work support;

Fig. 2 is a detail of a modified form of the last support;

Fig. 3 is a side elevation of the work positioning fingers and their adjusting and operating mechanism;

1 Fig. 4% is a view of Fig. 3 taken from be- Fig. 5 is a detail in perspective of the mechanism for tripping the fingers to permit their return to. operative position;

Fig. 6 is a sectional detail plan view from below, on the line 66, Fig. 3

- Fig. 7 is a front view of the upper part of the machine;

Fig. 8 is a sectional view of a knife holding mechanism on the line 88 of Fig. 7, some of the parts being omitted;

Fig. 9 is a vertical section showing the chip removing mechanism; and

Fig. 10 is a section on the line 1010 of Fig. 7.

The working arts of the machine are supported on a f fame or column 2, Fig. 1, near the base of which is pivoted at 4 a jack post 6. An upper extension 8 of the jack post is telescoped in the lower part 6 and is splined therein to prevent relative rotation of the parts. The extension 8 is threaded through a hand wheel 10 by which the length of the jack post may be adjusted. To the upper end of the extension 8 is clamped, by a screw 11, a casting 12 which has a forwardly and upwardly extending portion 14 for supporting a toe rest 16. A rod 20, Fig. 2, is mounted for longitudinal movement in the casting 12. The rod carries at its up or end a last pin 22 which enters the thim le of the last during the operation of the ma chine upon a shoe. The rod 20 is resiliently upheld by a comparatively light spring 24 of suflicient strength to support the parts resting thereon, together with the weight of the last and shoe. The spring, however. is light enough to permit the shoe to be readily depressed by pressure of the hand upon it. Rotation of the rod 20 is prevented by a screw 26 which engages a suitable longitudinal groove in the rod. To enable the upper of a shoe to be readily slipped over the last pin 22 and the upper portion of a last support, resilient leaves or plates 23 are attached to the casting 12 and extend upward nearly to the normal level of the crown of the last. These plates prevent the edges of the upper from catching on the projecting parts or between the crown of the lastand crown on ging surface upon the last support. On Elie front face of the'rod 20 teeth 28 are formed which coiiperate with a pawl block 30 movably mounted on one arm 32 of a bell crank lever which is pivoted at 34 to the casting 12. The pawl block 30 is held normally in engagement with the teeth 28 by a leaf spring 36. To receive the shoe the jack post is swung outwardly into an inclined position about the center 4, the last being rested upon the upper end of the rod 20 with the forepart resting on the toe rest 16, which is vertically and horizontally adjustable, as shown, properly to receive'it. In the shoe receiving position of the jack post, the lower arm 38 of the bell-crank carrying a roll 40 engages the high outer port1on of a cam bar 42 pivoted at 44 to an adjustable bracket 46 on the machine frame and riding on a roll 48 mounted on the cast ing 12. Upon movement of the jack outwardly the roll 40 is raised sllfiiciently by the high art of the cam bar 42 to throw the pawl lock 30 out of engagement with the teeth 28 and leav the rod 20 free to be moved downwardly against the spring 24, when the operator positions the shoe and presses down upon it. He then swings the jack backwardly to bring the shoe under the knife and the tread .face of the heel under a tread plate 50 which has initially a predetermined vertical position. The shoe is then released by the operator and the spring 24 raises the shoe against the tread plate 30. The described movement of the shoe and the jack has meantime carried the roll 40 ofi' of the high part of the cam bar 42 so that the bell-crank lever 32, 38 and pawl 30 may respond to the spring 36, which forces the pawl into lockin' engagement with the teeth formed on t e rod 20 as shown in Fig. 2. This effects the locking of the shoe vertically against the pressure of the tread plate which 0 crates in a manner to be described to app y pressure to the shoe.

The amount of inward swinging movement of the jack post is determined by" an adjustable limiting stop 27 threaded into a downward projection of the jack post 6 below its pivot 4 which contacts with one wall of a recess 29 in the base of the frame 2. A similar stop 31 may be provided on the other side of the projection to limit the outward swinging of the jack post. In the construction embodying this invention means is provided for insuring that the jack post shall swing to the limit of its inward movement against the stop 27. This comprises a cylinder 33 pivoted at 25 to the jack post and having therein a plunger 35 and a stiif spring 37 which forces the plunger 35 outwardly The end of the plunger is formed to engage a stationary pin 39 on the frame 2 which is positioned in line with the pivot aaeaees 25 and the pivot 4 of the jack post whenthe jack is in a neutral position partially withdrawn from operative position. Therefore,

when the 'ack post is in this position the I spring in t e cylinder 33 will be compressed,

and when the jack is moved inwardly beyond'this position the spring 37 will re-act against the stationary pin 39 to push the post lnwardly as far as permitted by the stud 27. When moved outwardly beyond.

this position the jack post will be similarly forced against the stop 31. This constrnc tion is particularly useful in connection with the form of last support shown-in Fig. 2*, a i

in which the rod 20,.instead of having thereon the last pin 22 and the plates 23 as shown in Fig. 1, is provided with a cap 41 which is bored to receive the end of the rod 20, the upper surfaceofthe cap 41 being at the same vertical height as the surface at the base of the last pin 22 which engages the crown of the last. With this construction the crown of the last is rested upon the upper surface of the cap 41, and the toe.

portion of the shoe upon the rest 16. The shoe and jack are then swung in far enough so that the cap 41 will support the last at the rear 'portion of the crown, the spring plunger 33-, -35 insuring that the surface of to correspond with the curvature to be given to the heel breast and to the curvature of a knife 71 and may be removed and replaced with another of different, curvature as required. The plate'50 is held upon the block ll y headed studs 54 which engage a suitable -slot in the block 52 and permit the plate to be removed by movement to the right in Fig. 3. The plate 50 is retained inopera-.

tive p'osition in the block by a spring pin 56 having a handle 58 which operates over a cammed surface to withdraw the pin when the pin is rotated by the handle 58 (Fig. 3).'

The block 52 which carries the tread plate 50 is mounted on a slide 60 for angular adjustment about a pivot 62. This adjustment is efiected by a screw 64 (Fig. 3) which engages an upstanding projection 51 on the block 52. The projection 51 is held yield.- ingly in contact with the screw 64 by a.

spring plunger 57 having a tapered end arranged to engage the upper side of a lug 55 on the slide 60. The front end of the slide may be thrown downwardly about the pivot 62 to facilitate the removal of the plate 50 without interference with the knife 71, whereupon the plunger 57 will engage the lower side of the lug 55 and hold the block 52 in that position. The slide 60 is linked at its upper end at 61 to the mid-portion ady - to the machine frame. The tension of the spring may be adjusted by a screw 74 acting on a plate 75 against which the spring abuts.

The machine is provided with an actueting slide 86 which reciprocat/es vertically in the frame and which, it approaches its upper limit or movement, engages on adjustable abutment 82 on the lever 66, thereby raising the lever and compressing the spring 76. As the slide 86 moves downwardly the spring actuates the lever 66 to force the tread plate 50, by the slide 66, firmly against the tread face of the heel eta shoe which is rigidly supported on the jaclr as described. To prevent excessive movement of the lever 66 when no shoe is in the mechine, an extension 65 of the lever 66 is provided which contacts with the frame of the machine.

The slide 86 is reciprocated vertically by power applied to a fly wheel 73 which is connected upon depression of a treodle 7 6 with a one-revolution clutch of known type, as shown in Fig. 1, to operate it crenlr 77. A

connecting rod 78 communicates motion from the cronlrl'l to the slide 86. The mochine normally comes to rest, as shown, with the slide 86 elevated and the crenlr therefor on its upper dead center, the spring 7 6 being then compressed. When the clutch is thrown in to start the machine the crank posses irom its position of deed center, and the spring nets to impart to the slide on accelerated movement until the tread plate engages heel. This notion of the spring quickly overcomes the inertia, of the ports and results in a quicker end more elilective cutting action of the T1 which is no -by it. Furthermore, nit/er the operative strolls of the re is ehected, the

' slide 86 is raised against the tension of the spring 76 which tends overcome the mo mentum of the moving parts and bring the nmchine quickly to rest without undue strain onthe stopping mechanism. It a e understood that, us is machines this type, the knife slide 81 is mounted r movement parallel to the actuating slide slides normally loclred tother. The actuating slide carries ni'fe slide downwardly to eflect operation, and "he breosting compl' ted the knife slide 81 outonioth olly disconnects octu dide '6 w ch completes its st ohe idly upon its urn picks up if knife slide 81 coining c ontoct wit... overhanging pro- 85 and heel; to reised posi Jo c C the slide 86.

The novel devices with which the machine is provided to cooperate with the shoe support and the tread plate to position the work will now he described. Fig. 4 is a view of the under side of the tread plate 56, showing positioning fingers 83, 84: which are pivoted at 77, 7 8 to a slide 86 which is mounted in the block 52 for movement longitudinally of the shoe independently of the plate 56. The slide is resiliently held forwardly, or toward the right, Fig. 3, by a tension spring 87 mounted between pins which are respectively on the slide 86 and on the bloclr 52. The forward position of the fingers is adjusted by a thumb screw 88 which is threaded through a depending lug 89 on the slide 86 and abuts against a depending lug 96 on the block 52. The lug 66 passes through a suitable opening or slot in The screw 88 is held trictionally against accidental movement in the lug 86 by a clamp screw 92. The

fingers

83, 8% are connected together for equal and opposite movement by interengagin toothed segments attit. The fingers are he d toward each other by a spring 96 and the normal position of the fingers, that is, their degree of separation, may be adjusted, by a thumb heed 68.

The thumb head 98 is on a screw 166 which is rotatably mounted in brackets 162, 163 and has right and left threaded engagement respectively with members 164, 165. The members 104, are free to swing on the screw 166 and the friction of the screw in the members may be adjusted by the clump screws 166, 167. The upper ends of the members 166, have inwardly inclined faces 168, 169, Figs. 4 and 6, which engage correspondingly inclined faces on

projections

111, 113 on the lingers 83, 841. The engagement of these inclined faces limits the approaching or closing movement of the fingers, and the amount of normal separation of the lingers may be varied by turning the head 68 to move the members 164-, 165 toward and from each other interally carrying with them the lingers.

The lrnife during its breasting stroke passes close to the curved front edge 53 oi the piste 56, Fig. 1 and since

fingers

83, 8% project beyond the front edge of the 56 to position heel for the breasting operation they be first to release hoolred ends -hrorn the side arm 114 is moved rearwardly by member 118 en the fingers and the slide 86 bodil ward against the spring 87 out of t e path of the knife. The fingers are held in proper position against the lower face of the tread enga ment of the cam rejection 115 upon 5 scent of the knife 3 ide and before the knife engages the work and the arm 114 is moved rearwardly against the screw 116, thus rocking the member 118 about the screw 100 as an axis. The lateral projections of the memge the

members

104, 105 and rock them about the same axis (screw 100) bringing the inclined faces 108, 109 on their uptper ends against the corresponding incline faces on

projections

111, 113 on the

fingers

83, 84. These inclined faces coiiperate to separate the forward ends of the fingers against the spring '96 to free the hooked forward ends of the fingers from the heel, and'continued rock:

.mg movement of the members 104, 105'by the same means brings the lateral projec'- tions 117, 119 of the

members

104, 105

against the square front faces of the rojec tions 111,113'on the fingers, Fig. 6, an rgovfis ac plate 50 by clips 131, 133 secured by screws to the lower face of the block 52. When theslide 86 is adjusted by means of the screw 88 it is necessary to maintain the screw 116 in operative relation to the arm 114. Simultaneous adjustment of the

screws

88 and 116 is effected by means of a square rod 122 which is held by a pin 123 in the end of the screw 88 and engages loosely a square hole in the screw 116, the hole being large enou h to permit the rocking movement of t e member 118, but not large enough to permit relative rotation of the rod 122 and the screw 116.

To facilitate the removal of the shoe after the operation. of the breasting knife itis desirable that the fingers remain in retracted position after theknife slide has returned to normal position. To efiect this a looking member or' lever 124 is pivoted upon a shaft 126 mounted in cars on .the block 52.-

One end of the lever is widened and is held against the screw 88 by a spring 128 wrapped around the hub 125 of the lever 124 and arranged to press the widened end u wardly. As the screw 88 is movedbacg .war 1y by the rearward movement of the fingers and slide 86 the end of the lever 124 assumes a position between the end of the 'tion removed to form a recess.-

asses screw 88 and the lug 90 against the rod 122 and prevents forward movement of the -shde 86 due to tension of the spring 87 whenthe knife slide has returned to normal position.

When the jack and shoe have been swung out from under the tread plate for the removal of the shoe it is desirable to have the

positioning fingers

83, 84 brought again into position-for operation upon the. next shoe. In the construction shown this is effected automatically b iyhmechanism shown;

or the remova of the shoe the rod 132 is justably clamped by a screw 142 to the rod 132 and arranged to engage and lift the offset end of the lever 124, Figs. 4,and 5.

The mechanism for removing from the work the chip which is wholly or partially detached by the breasting knife will now be described. Machines of'this type are usually provided with mechanism comprising a shank stop or hunter which contacts with the shoe at the shank and coiiperates with mechanism for arresting the movement of the knife to prevent its cutting into the shank. This member comprises, in the machine. embodying the present invention, a foot 150 which engages the shank of the shoe. The foot 150 is mounted on a horizontal stud 152 projecting lengthwise of the shoe from the member 150. The foot may, therefore, rock laterally to accommodate itself to the lateral inclination of the shank of the shoe. The shoe engaging face of the foot 150 is arched and has its central por- The recess accommodates the ridge on the shank formed by the shank stiffener or the angular-portion of a cottage roof shank and bears only on the marginal portions of the shank.

The member 154 slides vertically in a T-slot in a member 160 which is pivoted at 162 to" the reciprocating knife carrying slide 81 of the machine. A spring plunger 166, Fig. 9,

bears on the end face of the member 160 at a point forward of the pivot 162, and therefore the plunger 166, under the impulse of a spring 170, forces the foot 150 toward the breast of the heel. The movement of v I the plunger 166 may be controlled by a nut.

172 so that the foot will not come into actual contact with the knife when there is no chip between them, and to prevent excessive movement of the member 160 when no knife is in the machine. The nut 17 2 is held from accidental rotation by a cotter pin 171 passing through the nut and a slot in the stem of the plunger 166. Rotation of the plunger relatively to its socket is prevented by a pin 173 passing through the same slot.

Supposing a shoe to be in the machine with the tread face of its heel against the plate and the knife carrying head 81 and knife 71 and connected parts to be approaching the shoe,after the tread plate has been forced against the tread face of the heel as above described the foot 150 engages the shank of the shoe and the member 1541 is pushed up into the member 160 until a project-ion 182 from the member 154:, Fig. 7, engages a pivoted latch 18 1 which by engaging a projection 186 on the sleeve 160 holds the stop foot 150 back against the pressure of the spring plunger 166. As the latch is moved by the projection 182 from a stop pin 183 about its pivot lfihon the knife slide 81 against a spring 188, the projection 186 is freed from the latch 18 1 and the foot swings forward against the breast of the heel and clamps the chip against the knife. As the cutting operation or the knife progresses, the member 15 1 is pushed into the sleeve 160 until a spring operated catch 190 pivoted at 191 engages a notch 193 in the member 154 and looks it in elevated position. l Vhen the knife is about to complete the cut, a screw 192 on a trip lever 19% comes against a projection 195 on the member 154i whereby the trip lever 192 is raised against a stifl spring 196 which crowds the foot 150 hard against the shank and forces it against the last prior to the tripping of the knife to arrest its cutting movement. Finally when the knife has reached the surface of the shank, the adjustment of the screw 192 is such that the trip lever 19% is operated sufficiently to disconnect the knife carrier 81 from the actuslide in a manner well-known and upon the return of the actuating means the knif is carried upwardly therewith and the foot 150, being locked with it, also rises up the chip held between the e feet. When the machine stops, the post with the shoe thereon is drawn This movement pushes apn the rod 132 (Fig. 1) which is with an arm 13-1 of a rock shaft 136 to the frame of the machine 8e having a lost motion connection a lever 298 pivoted at 210 and ownwardiy projecting segmental which is arranged to engage the hich holds the member 154- elelever 208 is also provided with an arm 211 which engages a projection 213 on the member 160 to the right of its pivot 162. As the jack is swung out the rod 204 is moved to the limit of its lost motion connection with the lever 208 and then moves the lever. This causes the arm 211 to prom on the projection 213 and swing the member 160, and of course the foot 150, away from the shoe, and at the same time causes the wedge shaped end of the segmental portion 212 to engage a beveled portion of the catch 190 and swing it free of the notch 193 to permit the member 15 1 to drop. This, of course, releases the chip which falls into a chute 21% mounted upon the jack post to swing therewith by means of a strap 215 secured to the chute and held upon the jack by the clamp screw 11. The chute 214; directs the chip so that it falls inside the ring 217 which is provided with inwardly directed spurs 219 upon which a bag may be hung to receive the chips. The bag is shown in dotted lines in F i 1.

in order to change the knives oi: the machine conveniently it is desirable to have the member 160 and connected parts readily movable out of operative position. This is efiected, as shown in Fig. 9, by so arranging the parts that the member 160 and connected parts may be swung to the right about 162 as a center, the sprin plunger 166 passing from the flat top portlon of the member 160 on to a portion 221 concentric with the axis 162, and finally as the member 160assumes a substantially horizontal position, engaging a depression 223 and holding the member yieldingly in that position. When the member 160 and its connected parts is swung back into operative position the projection 195 must be brought into proper position beneath the screw 192 on the trip lever19, for it it is not so positioned and the machine be operated the shoe will be cut through the shank and spoiled. lit is accordingly desirable to provide means for preventing the

members

160 and 154 from being wrongly positioned accidentally when brought back from their inoperative position. This is eiiected by extending downwardly the projection 211 which tips the member 160 to release the chip so that the extension will be in the way or the projection 182 unless the member 154: is positioned vertically so that the projection 195 will pass under the screw 192.

The novel knife and knife holding mechanisni are best shown in Figs. 7 and 8. The knife '71 used in this machine may be a thin blade, of say to of an inch in thickness, havin a uniform temper throughout having a given curvature which is preferably somewhat less than that required for th knife when in operation. Coiiperating blade which is the actual cutis a front plate 252. This 55 the balls more tightly, thereby holding the plate has the exact curvature which it is desired that the knife shall have. The knife 71 and the plate 252 are held by their side edges in

grooved clamping members

254, 256 which extend substantially the length of the longest knife to be used. The

members

254, 256 are moved toward and from each other by a hand wheel 258 which rotates a right and left hand worm 260 meshing with worm pinions 262 fixed to

vertical shafts

264, 266. These shafts each carry two pinions 268, which mesh with upper and lower racks 270 formed in the clamping

members

254, 256. The

clampin members

254, 256, move, as shown in Fig. in right line paths laterally of the knife.

It will be clear that by rotating the hand wheel 258 the side clamping members or

jaws

254, 256 will be moved simultaneously toward and from each other and may be firmly clamped against a knife'held between them, as shown in Fig. 8. From this figure it will also appear that

grooves

255, 257

in the clampin members are so shaped relatively to the orming plate 252 and knife 71 that the knife 71 will be bent to the form of the plate and firmly held against it. The knife 71 is a little narrower than the former 252, and the edges of the former are inclined to correspond to .the enga 'ng faces of the

grooves

255, 257 so that as t e clamping members are forced inwardly the former 252 will force the knife 71 against the rear outer corners of the grooves and flex the knife to the shape of'the former if the knife has a less curvature than the former and therefore tends to stand away from the former at its side edges.

The former 252 has a vertical slot 280 open at its upper end to accommodate a knife abutment 282, best shown in Fig. 9.

- The abutment is on a stem 284 which may be adjusted vertically and as the knife is ground away and becomes shorter the abutment may enter theslot 280. To hold the stem in adjusted position a ball clutch is provided comprising an upstanding tube 286 on the knife carrier 81 through which the stem 284 slides, and to which is threaded a cap 288 having an inclined surface 290 with which balls 292 enga e. It will be seen that by screwing down t e cap the balls 292 will become wedged by the surface 290 against the stem 284 and that any upward pressure on the stem will only tend to wedge stem firmly in adjusted position but permitting adjustment thereof for knives of different lengths.

A lug 296 is provided in one of the knife grooves on which one corner of the knife edge may rest-to determine the position of its lower edge which is always the same, the abutment being adjusted down into bearing ward movement of the shoe.

- ation of the machine.

with the upper end of the knife, whatever its length. A similar lug may be provided to engage a notch 251 in the side of the member 252 which is always the same sequence the steps involved in breasting the heel of a shoe thereon.

Referring to Fig. 1, the jack 6 is first swung outwardly as far as the stop 31 permits, a shoe is then placed upon the jack, the last pin 22 engaging thethimble of the last, or, in case the support shown in Fig. 2 is used, the crown of the last resting upon the cap-41. The toe portion of the shoe is supported upon the toe rest 16 which is adjusted to bring the plane of the tread face ofthe heel parallel with the tread plate 50, the latter being adjusted at the properangle to the horizontal to give the desired angle to the heel breast. The rear portion of the shoe is depressed by the operator against the spring 24, and the jack is swung backward. During this backward movement the spring plunger 35 assists the operator in moving the jack against the limiting stop 27'. As the jack swin backward the roll 40 passes ofl of the high part of the cam 42, and the pawl 30 engages the teeth 28 and prevents further depression of the shoe, although upward movement thereof is still permitted. The shoe is now allowed to rise under the impulse of the spring 24 between the

fingers

83, 84 against the tread plate 50, the

fingers

83, 84 being adjusted by the thumb head 98 to the proper distance apart to admit between them a heel of the width being breasted. The shoe is then drawn forward to bring the breast corners of the heel against the hooked ends of the

fingers

83, 84, which limit the for- The thumb head of the screw 88 is adjusted to move the fingers longitudinally of the shoe so that the roper amount will be removed from the heel by the knife, the position of the knife cut on the heel being indicated by the edge 53 of the plate 50.

The operator now steps on the treadle 76 to throw in the clutch for the power oper- As the crank 77 moves beyondthe dead center the spring 70 acts tuator 80 and knife carrier 81 until the tread plate comes into firm bearing on the initially to overcome the inertia of the acaeaeea j heel, whereupon the energy stored in the spring 70 holds the heel firmly against the i work support which is now rigidly upheld by the pawl 30. The cam 115 on the knife carrier comes in contact with the cam roll on the arm 110 and operates the arm 114 to open and retract the

positioning fingers

88, 84 out of the path of the knife. The foot 150 on the member 154 comes in contact with the shank of the shoe, and the member 154 telescopes into the member 160 until the projection 182 contacts with the latch 184 and lifts it from behind the projection 186. This permits the foot 150 and connected parts to swing toward the heel about the center 162 under the impulse of the spring plunger 166 and the foot to press the chip against the knife which is now nearly through the heel. The adjusting screw 192 on the trip lever 194 finally engages the projection 195, and the end of the trip lever is held from movement relatively to the knife slide, causing the spring 196 to act on the foot 150 and press the sole firmly in contact with the shank portion of the last until finally, when the edge of the knife has reached the shank, the knife slide 81-is disconnected from its actuator 80, which completes its downward stroke idly and on its return encounters the projection 85 and carries the knife carrier back to normal position assisted by the spring 290, Fig. 1. During the latter part of this stroke the slide 80 encounters the abutment 82 and has its momentum absorbed by the spring 70. Meantime the chip has been held between the forming plate 252 of the knife 71 and the foot 150, which has been locked against downward movement relatively to the knife by the catch 190 which engages one of the notches 198 and has been carried upward by the knife and foot and then returned.

The

fingers

88, 84 are locked in their retracted position b the engagement of the end of the lever 124 between the end of the screw and the lug 90. The jack is now swung outwardly and as the shoe clears the tread plate the block 140 on the rod 132 operates the lever 124 to release the

fingers

83, 84 and permit them to return to operative position under the influence of the spring 87. The rod 132 also) operates through the rod 204 to move the lever 208 which acts through the projection 211 to swing the member 160 away from the presser foot 150 to release the chip, and at the same time the end of the segmental portion 212 of the lever 208 engages the latch 190 and releases the member 154 which drops with the foot 150, thereby further increasing the space between the foot 150 and the knife and insuring that the chip will be disengaged and will fall into the chute 214 which has been swung beneath it by the outward tact with the work to seize and remove the a chip cut off by the knife.

2. In a machine of the class described, the combination of a reciprocating knife, and means rendered operative by contact with the work to seize the chip cut off by the knife and acting during the return movement of the knife to remove the chip.

3. A machine of the class described having, in combination, a reciprocating knife, tensioned resilient means released automatically upon downward movement of the knife to clamp the chip against the knife during its return stroke, and means for retensioning the resilient means.

4. In a machine of the class described, the

combination of a reciprocating knife acting to cut a chip from the Work, means for effecting removal of the chip operated by the movement of the knife, and means operated by movement of the work for releasing the 0 1p.

5. In a machine of the class described, the combination of a reciprocating knife constructed and arranged to cut a chip from the breast of a heel, and means for forcing the chip against the knife during the return movement of the knife formed to press and hold the chip against the knife entirely by pressure applied perpendicular to the knife and most forcibly at the corners of the heel breast.

6. In a machine of the class described, the combination of a knife, means for reciprocating the knife toward and from the work, a chip remover, means becoming effective upon movement of the knife toward the work for causing the remover to grip the chip against the knife and hold it there during the movement of the knife away from the work, and means for releasing the chip only after the work is removed from beneath the knife.

7. In a heel breasting machine, the combination of a breasting knife movable toward and from the shoe, and means, partaking of the movement of the knife and rendered effective by contact with the shoe, for seizing the chip, and means for operating the seizing means to remove the chip from the shoe.

8. In a heel breasting machine, the combination of .a breasting knife movable tothe knife and rendered effective by contact With the shoe on said support, for seizing the chip, and means for operating the seizing means to remove the chip from the shoe.

, 10. In a machine of the class described, the combination of a work support, a knife movable toward and from the work support, means for seizing and removing the chip operated by movement of the knife, and means, operated by movement of the work support, for releasing the chip.

11. In a machine of the class described, the combination of a work support, a knife movable toward and from the work support, means for seizing and removing the chip operated by movement of the knife, and

means, operated by movement of the worksupport, for resetting the chip seizing means in normal position.

12. In a machine of the class described, the combination of a reciprocating knife, a stop arranged to engage the shank of the shoe, means operatively connected with the stop to arrest movement of the knife when the shank is reached, and means to press the stop toward the knife to hold the chip against the knife during the return movement of the knife.

13. In a machine of the class described, the combination of a reciprocating knife, a foot mounted for movement with the knife and for movement relatively thereto having a normal position in advance of the knife, means for forcing the foot toward the knife to clamp'the chip cut 0E by the knife, means operatively connected with the foot to arrest movement of the knife.when the shank is reached by the knife, and means for holding the foot against movement relatively to the knife during the return stroke of the knife.

14. In a machine of the class described, the combination of a vertically reciprocating knife, chip holding means mounted for movement with the knife and also independently thereof and having a normal position in advance of the knife, means acting upon reciprocation of the knife to force the chip holding means toward the knife, said chip holding means being moved to a position adjacent to the knife edge by contact with the shoe, and means for maintaining the chip holding means in holding relation to the knife during the return of the knife.

15. In a machine of the class described,

' tact with the shoe and brought to a position adjacent to the knife edge, means rendered efl'ective by the'arrestment of the chip holding means to force the chip holding means toward the knife and to maintain the chip holding means in holding relation to the knife during the return of the knife, and means for releasing the chip prior to the next 0 eration of the machine.

16. n a machine of the class described, the combination of a reciprocating knife, a stop, means for forcing the stop toward the knife, means for locking the stop in a position away from the knife in opposition to said means, and means operating during the descent of the knife to release the locking means and permit the stop to clamp the chip against the knife.

17. In a machine of the class described, the combination with a reciprocating knife, of achip remover, means becoming effective upon movement of the knife for causing the remover to grip the chip against the knife, and means operable after the work is withdrawn from beneath the chip for releasing the chip.

18. In a heel breasting machine, the combination of a work support, heel breastin' and chip removing means movable towar and from the work support, and chip receiv- 7 ing means movable by the work support beneath the chip removing means.

19. In a heel breasting machine, the combination of a work support, heel breasting and chip removing means movable toward and from the work support, chip receiving means movable by the work support beneath the chip receiving means, and means, operated by the work support, for releasing the chip and permitting it to fall into the rece1v1n means. x

20. 11 a machine of the class described, the combination of a reciprocating knife, a chip remover formed to engage the chip in the angle between the breast and the shank and constructed and arranged for rocking movement for equalizing the bearing of the remover upon the shank, means for holding the remover toward the knife edge, and means for retracting the knife and the remover together.

21. In a machineof the class described,

naeaeea ing movement to equalize the bearing of said lateral portion upon the shank, means for holding the remover against the chip, and means for retracting the chip remover and the knife together.

22. In a machine of the class described, the combination of a reciprocating knife, a stop arranged to engage the shank of the shoe, means operatively connected with the stop to disconnect the knife from its operating mechanism to arrest movement of the knife when the shank is reached, and afoot on the stop having lateral extensions to bear only on the marginal portions of the shank.

23. In a machine of the class described, the combination of a reciprocating knife, a stop arranged to engage the shank of the shoe, means operatively connected with the stop to arrest movement of the knife when the shank is reached, a foot on the stop having lateral extensions to bear on the marginal portions of the shank, and means for applying additional pressure to the foot to force the marginal portion of the shank against the last before the knife is arrested.

24. In a machine of the class described, the combination of a reciprocating knife, a stop arranged to engage the shank of the shoe, means operatively connected with the stop to arrest movement of the knife when the shank is reached, and a foot on the stop having lateral extensions to bear on the marginal portions of the shank, said foot being mounted upon the stop for rocking movement to equalize the pressure on the marginal portions of the shank.

25. In a machine of the class described, the combination of a reciprocating knife, a stop arranged to engage the shank of the shoe, means operatively connected with the stop to disconnect the knife from its operating mechanism when the shank is reached, said stop being mounted for movement out of operative position and out of operative relation to said disconnecting means to permit access to the knife, an means for holding the stop in inoperative position.

26. In a machine of the class described, the combination of a reciprocating knife, a stop mounted for movement with the knife and for movement vertically relatively thereto, the stop having a normal position in advance of the knife, means operatively connected with the stop for arresting the action of the knife, means for forcing the stop toward the knife to grip the chip, said stop being also mounted for movement out of operative relation to the knife arresting mechanism, and means for insuring restoration of the stop in proper vertical relation to the knife arresting mechanism.

27 In a machine for breasting a heel after it is attached to a shoe, the combination of a reciprocating breasting knife, a shoe support movable with the shoe in the direction of the length of the shoe at substantially right angles to the plane of movement of the knife, and fingers having hooked ends arranged to extend from the rear of the shoe forwardly to embrace the heel and determine by simultaneous contact of their hooked ends with the heel breast the longitudinal and angular position of the shoe relatively to the knife. I

28. In a machine for breasting a heel after it is attached to a shoe, the combination of a breasting knife, a shoe support movable with the shoe in the direction of the length of the shoe and resiliently upheld for depression with and by the shoe, fingers having ooked ends arranged to extend from the rear of the shoe forwardly to embrace the heel and to determine the longitudinal and angular position of the shoe relatively to the knife by simultaneous contact of the hooked ends with the heel breast when the shoe is allowed to be raised by the resiliently upheld support and the shoe is moved forward with its support to bring the breast in contact with the hooked ends, and means for holding the support against depression during the operation of the knife.

29. In a machine of the class described, the combination of a breasting knife, means for positioning the shoe relatively to the knife, comprising fingers having hooked ends arranged to embrace the heel and determine by contact of their hooked ends with the heel breast the longitudinal posi-' tion of the shoe, and means, operated by descent of the knife, first to separate the tin gers and then to retract the fingers out of the path of the knife.

30. In a machine of the class described, the combination of a breasting knife, means for positioning a shoe relatively to the breasting knife, comprising normally separated fingers having hooked ends arranged to embrace the heel and determine by simultaneous contact with the opposite corners of the heel breast the longitudinal position of the shoe, means for separating the fingers to free the hooked ends from the heel and then moving the fingers rearwardly beyond the plane of operation of the knife. and means for adjusting the fingers longitudinally of the shoe.

31. In a machine of the class described, the combination of a breasting knife, means for positioning a shoe relatively to the breasting knife, comprising normally separated fingers having hooked ends arranged to embrace the heel and determine by contact with the corners of the heel breast the longitudinal position of the shoe, means for adjusting the fingers longitudinally of the. shoe, means for separating and withdrawing the fingers rearwardly of the shoefor the passage of the knife, and means for maintaining undisturbed the relation of the mechanism for separating and withdrawing'the fingers as the 'fingers are adjusted longitudinally of the shoe.

32. In a machine of the class described, the combination of a work support, a breasting knife, means for positioning the shoe, comprising fingers arran d to embrace the heel from the rear an to determine by contact with the breast face of the heel. the

. heel from the rear and to determine by contact with the breast face of the heel the longitudinal position of the heel, means for retracting the fingers prior to the breasting operation, and means for restoring the fingers to operative position becomlng efi'ective u on movement of the shoe support.

34. na machine of the class described, the combination of a breasting knife, means for positioning the shoe, comprising fingers arranged to embrace the heel from the rear and to determine by simultaneous contact with the breast face of the heel the longitudinal position of the heel, means for retracting the fingers prior to the breasting operation, and means for returning the fingers to operative position after the removal of the shoeout of range of the fin era.

35. In a machine of the class escribed, the combination of a shoe support, a reciprocating breasting knife, means for positioninga shoe, comprising fingers arranged to embrace the'heel and by contact with the edges; of the heel'bre'ast to determine the longitudinal position of the shoe, said fingers being mounted for movement longituinally of the shoe, resilient means for holding the fingers in their forward or operative position relatively to the shoe, means for retracting the fin are from the path of the knife, means for ocking the fin ers in retracted position, andmeans "forre easing the fingers operated by movement of the shoe support. 1

36. In a machine of the class described, the combination of a thin knife and a member engaging a substantial portion of a face of the knife and against which the knife is clamped to give it stiffness, and means engaging the marginaledges only of the knife for holding the knife and member clamped together.

37. In a machine of theclassdescribed, the combination of a flexible knife, a forming member against which the knife is meaeea clam ed to give it the shae ofthe forming mem er, and means for v c mpin together the side edges of the knife and forming member.

38. In a machine of the class described, the combination with a laterally-curved knife, a laterally curved plate against --which the kmfe 1s clam ed, and relatively movable clamping mem rs for clampin together the side edges only of the knife'and pla'jte.

39. A machine of the class described having, in combination, knife clam ing mechanism comprising laterally movaq) members, a knife shait'lpened at its end and adapted to be engage at its side edges by thegrooved members, and a member havin a proximately the shape of the knife and a aptedto be clamped with the knife in the grooves in position to expose the edge of the knife.

40. In a machine of the class described the combination of longitudinally grooved clamping members mounted for rectilinear movement toward and from each other and means for effecting movement of the clamping members simultaneously to clamp a knife in the grooves.

41. A machine of the class described having, in combination, a laterally curved flexible knife, a plate having a dlfi'erent curvature from that of the knife against which the knife is clamped, and means for clamp.- ing together the side edges of the knife and plate to conform the curvature of the knife to the curvature of the plate and to hold the knife and plate rigidly.

42. In a machine of the class described, the combination of a knife, a knife holder having a groove to receive a side edge of the knife, and a stop in the groove of the holder to engage the knife and determine the position of its ed e relatively tothe holder.

1e grooved 43. A mac ine of the class described having, in combination, a knife, a knife holder having grooves to receivethe side edges of the knife, and a shelf in one of the grooves to engage a corner of the cutting edge of the knife and determine its position relatively to' the holder.

44'. A machine of the class described having, in combination, a'knife, a holder for the knife, a slotted forming plate against which the knife is clamped by the holder, and an abutment for the knife lying in the slot in the plate and engaging the end of the knife I opposite its cutting edge to back up the knife for its cutting operation.

45. A machine of the class described having, in combination,.a knife, a knife holder, a movable abutment forthe knife, and means comprising a one-way clutch for preventing movement of the abutment by pressure against the knife edge.

46. A machine of the class described having, in combination, a knife, a knife holder,

an abutment for the knife, and a one-way clutch for the abutment which prevents movement of the abutment by pressure against the knife edge but permits the abutment to be adjusted longitudinally against the back of the knife in the opposite direction.

47. A machine of the class described having, in combination, a knife, a knife holder engaging the side edges of the knife, a plate against which the knife is clamped by the holder, and cooperating means on the plate and holder for insuring the positioning of the plate in the holder in a predetermined position relatively to the holder.

48. In a machine of the class described, the combination of a knife comprising a cutting portion and a forming portion, the latterhaving a notch in its side edge, a holder for the knife having rooves to engage the side edges of the knife, and a pin in one of the grooves to engage the notch in the forming portion to determine its position relatively to the holder.

49. A machine of the class described, having in combination, a knife comprising a thin cutting member, and a thick stiffening and forming member having beveled side edges, clamping members having grooves therein to receive the side edges of the knife and of the member, said grooves having the front wall inclined to receive the beveled edges of the forming member and having a bearing corner on the outer edge of the rear wall to bear upon the cutting member and means for forcing the clamping members to ward the side edges of the knife to clamp the cutting member and the forming member together.

50. In a machine of the class described, the combination of a knife, a knife carrier, a shoe support, a tread plate constructed and arranged to be operated to apply pres sure to the heel of a shoe on the support, and means constructed and arranged to store energy during the upward movement of the knife and to release that energy to operate the tread plate and hold the shoe clamped upon the support during the descent of the knife.

51. In a machine of the class described, the combination of a reciprocating tool, means for operating the tool, a work support, means for clamping the work upon the. work support, and means constructed and arranged to store energy. during one stroke of the tool and to release thatenergy to the work clamping means during the succeeding stroke of the tool.

52. In a machine of the class described, the combination of a reciprocating tool having an idle upward and an operating down ward stroke, means for positively reciprocating the tool in both directions, means constructed and arranged to store energy due to the momentum of the arts during the idle stroke and to release t at energy to the tool during the operating stroke to accelerate the tool.

53. In a machine of the class described, the combination of a work support, a breasting knife, a vertically reciprocating knife carrier, means for clamping the shoe upon the work support, means constructed and arranged to absorb the energy due to the momentum of the knife carrier during its idle or upward stroke, said means being constructed and arranged to release that energy to the knife carrier and to the work clamping means during the downward stroke of the knife.

54. In a machine of the class described, the combination of a work support, a breasting knife, a vertically reciprocating knife carrier, means for clamping the shoe upon the work su port, means constructed and arranged to a sorb the energy due to the momentum of the knife carrier during its idle orupward stroke, said means being constructed and arranged to liberate the stored energy to the knife carrier during the first part of the downward stroke and to the work holding means during the latter part of the downward stroke.

55. In a machine of the class described, a reciprocating breasting knife carrier, a knife carried thereby, a tread plate to engage the tread face of the heel, a depressible work support movable into and out of position under the plate, means for applying power pressure to the tread plate upon movement of the knife carrier, and means for locking the work support against depression which is rendered eifective upon movement of the work support under the tread late.

56. n a machine of the class described, a reciprocating breasting knife, a tread plate, a work support movable into and out of position under the tread plate, said support being resiliently upheld to permit depression of the work and introduction of the work under the plate, means for preventing depression of the work and support after the work is positioned against the tread plate, and means, becoming efiective prior to the action of the knife upon the work, for applying pressure to the tread plate to hold the work.

57. In a machine of the class described, the combination of breasting means, a tread plate, a work support normally depressible with and by the shoe, means for locking the work support against depression when the tread face of the heel is rested against said plate, and means for exerting pressure upon the plate to prevent movement of the heel during the breastingoperation.

58. In a machine of the class described, the combination of breasting means, a tread plate, a depressible work support, means for lockin the work su port against depression w en the tread ace of the heel is rested against said plate, means for exerting pressure upon the plate to prevent movement of the heel during the breasting operation, and means for applying pressure to the lateral margins of the shank before the action of the breasting means is completed. 59. In a machine of the class described, the combination of breasting means, a tread plate, a depressible work support movable into and out of position beneath the plate having a surface to bear only upon the rear portion of the crown of the. last, means insuring movement of the work support to its rearmost position beneath the last, means for locking the 'work support against depression when the tread ace of the heel is rested against said plate, and means for exerting pressure upon the plate to prevent movement of the heel during the breasting operation.

60. In a machine of the class described, the combination of breasting means, a tread plate,- a de ressible work support having a surface to car only upon the rear portionv of the crown of the last, means for locking the' work support against depression when the'tread face of the heel is rested against said plate, and means for exerting pressure uponthe plate to prevent movement of the heel during the breasting operation.

61. In a machine of the class described, the combination of breasting means, a tread plate having a roughened surface for engaging the tread face of the heel, a depressible work support having bearing only on the rear part of the crown of the last forcing the foot toward the knife to grip the side portions of the chip .against the knife. I

63. In a machine of the class described, the'combination of a breasting knife, a stop arranged to en age a shoe shank to arrest 'the cutting-act1on of the knife, means for forcing the stop against the heel breast prior to the completion of the cut of the knife, whereby as the cut is completed the knife will force the chip. against the stop, and

means for e ecting the return of the stop in chi clamping relation to the knife.

64. n a machine of the class described,

the combination of a reciprocating knife, a 7 stop arranged to engage the shank of a' shoe to determine the extent of the cutting action of the knife, and a foot on the stop having lateral extensions to bear on the marginal portions of the shank of the shoe, said foot being mounted on the stop for rocking movement to equalize the pressure on the marginal portions of the shank.

In testimony whereof I have signed my name to this specification.

LOUIS A. CASGRAIN.