US1284847A - Heel-shaping machine. - Google Patents

Description

E. E. WINKLEY.

HEEL SHAPING MACHINE.

APPLICATION FgLED APR.23.1917.

. Eatented Nov. 12, 1918 4 SHEETS-SHEET l.

E. E. WINKLEY.

HEEL SHAPING MACHINE.

APPLICATION FILED APII.23. 1911.

1,284,847., Patented Nov. 12,1918.

4 SHEETS-SHEET 2.

W" 3. JW m @@m/ QW E. E. WINKLEY.

HEEL sHAPlNG MAcHlNE.`

APPLICATION FILED APR. 23. I9I7 Patented Nov. 12; 1918.`

4 SHEETS-SHEET 3.

E. E. WINKLEY.

HEEL SHAPlNG MACHINE.

APPLICATION man APR.23. 1911.

Patented Nov. 12, 1918.

4 SHEETS-SHEET 4.

siraras ramena crearon' ERASTUS E. WINKLEY, 0F LYNN, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO UNITED SHOE MACHINERY CORPORATION, 0F PATERSON, NEW JERSEY,

A CORPORATION OF NEW JERSEY.

HEEL-SHAPING MACHINE.

Speoication of Letters Patent.

Patented Nov. ie, wie.

Application mea Apinaa, 1917. serial No. 163,876.

To all whom t may concern:

Be it known that I, ERAs'rUs E. WINKLEY,

a citizen of the United States, residing at Lynn, in the county of Essex and. State of Massachusetts, have invented certain new and useful Improvements in Heel-Shaplng Machines; and I do hereby declarethe f ol.- lowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art towhich it appertains tomake and use the same.

This invention relates to a machine by which rough heels, that is to say, blocks or heel-piles shaped only roughly to the form and dimensions -of a heel, may be trimmed and shaped, upon their lateral and rear surfaces, to 'a'roundedi and beveled form approximating that of a finished heel.

In Letters Patent of the United States' No. 1,102,310, granted July 7, 1914 to the present applicant, a heel-shaping machlne is disclosed in which the rough heel2 while being shaped, is held in a clamp, wlth the heelin engagement with a rotary cutter, while various movements are imparted to the clamp to secure the desired form in the shaped heel. In the machine of said patent the rotaryY cutter is so arranged as to shape the heel by cuts progressing transversely with respect to the thickness of the heel, or across the edges of the lifts or layers of material of which the heel is composed. In 'accordance with that mode of operation the eoncavity, in vertical section, of the lateral and rear surfaces of the heel is determined by the diameter of the cutter or the orbit in which its edges move, a more pronounced concavity requiring a cutter of small diameter, and vice versa, and it is impossible, in such an arrangement, to produce a perfectly straight bevel such as is used in straight heels or heels of the so-called Cuban shape.

Oneobject of the present invention is to improve the machine of the said patent in such a manner as to permit the shaping of heels with any desired vertical section, whether straight, ogee or concave. To this end it is proposed, in accordance with the present invention, to employ a shaping-cut the cutter is substantially normal to the planes of the upper and lower surfaces of the heel which is being operated on, assuming that the heel is being shaped with little orI no bevel, and departs from such normality only in so far as the heel is inclined to produce a beveled surface.

By the arrangement iust described it is rendered possible to impart to the heel any desired shape, in vertical section, by forming the edges of the rotary cutter correspondingly. Thus, if the cutter has straight edges the shaped surface of the heel Will be neither concave nor convex, while a convex form in the edges of the cutter Will produce a concave surface on the heel.

In. the machine of the said patent the heels are fed automatically to each -of a pair of oppositely-disposed work supports in the form of heel-clamps, and each clamp so supplied with a heel is then swung around into a position such that one of the lateral surfaces of the heel is presented to the shaping-cutter, whereupon the cutter shapes such lateral surface, and the form of this surface, in horizontal section 0r plan, is determined by the shape of the edges of the cutter. Thus, if these edges be straight the lateral surface of the heel will be straight in plan-view. After the shaping of the lateral surface the heel-clamp is swung through approximately 180, thus causing the rearl heel even when in engagement with the lateral surface thereof, and since such linecontact extends vertically, that is, fromthe upper to the lower surface of the heel, the form, in plan-view, of the lateral surface of the heel cannot be determined by the form of the edges of the cutter. Another object of the present invention, accordingly, is to provide means, independent of the form of the cutter, for determining the shape, in plan, of the lateral surfaces of the heel. To this end it is proposed, in accordance with the present invention, to move the cutter bodily, while it is rotating in engagement with the lateral surface ofthe heel, so as to cause the cutter to traverse and complete this lateral surface.

After the shaping of one of the lateral surfaces of the heel has been completed, in the manner just described, the traversing movement of the cutter is arrested, and the heel is swung through approximately 180"y to shape the rear surface. yThe traversing movement of the cutter is then resumed, to cause the shaping of the other lateral surfaces of the heel. The heel is then removed from proximity to the cutter, while the latter is returned to its original position, ready for operation upon another heel.

" To the accomplishment of these objects and such others as may hereinafter appear, as will be readily understood by those skilled in the art, the invention comprises the features and combinations of parts hereinafter described and particularly pointed out in the appended claims.

In the accompanying drawings illustrat ing the preferred embodiment of the invention Figure 1 is a partial side-elevation of a machine embodying the present invention, only vso much of the machine being shown as is necessary to illustrate the application of, the`1nvention thereto; Fig. 2is a rear-elevation of the parts shown in Fig.v 1; Fig. 43 is a vertical section on the line 3-3 in Fig. 2, but on a larger scale than the latter ligure; Fig. 4 is a plan-view showing particularly the rotary cutter and the means for supporting and actuating it; and Figs. 5 and 6 are detail plan-viewsv showing the coperative relation of the rotary cutter and the heel at two points in the o-peration of the machine, Fig. 5 showing the parts inthe positions occupied at the beginning of the shapingoperation, while Fig. 6 shows the parts in the positions occupied after one lateral surface and the rear surface of the heel have beenshaped.

in a machine which is, or may be, in all respects the same as the machine disclosed in said Patent No. 1,102,310, except in so far as relates to the rotary cutter and the means by which it is supported and actuated.

As inthe machine of the said patent the work support on which the heel is held, during the shaping operation, comprisespa clamp (Fig. 3) having a bed 10 from which an integral post 12 projects upwardly. A movable jaw 14 slides on the post and engages the tread face of the heel, which, in this case, is uppermost, the lower or heel-seat face of the heel being pressed against a pattern-plate 18, which is supported upon the bed 10. By means which need not be described herein the clamp-jaw is pressed firmly against the heel, and is secured in its adjusted position upon the post. The rough heel to be operated upon may have the form shown in Fig. 5, in which it is composed of a series of lifts of polygonal form, roughly approximating the general outline of thefinished heel.

Two heel-clamps are employed, these clamps being mounted on opposite sides of a carrier fby which they are swung laterally into andout of coperative relation with the shaping-cutter. The carrier, as in the machine of the said patent, comprises a sleeve or hub 20, fixed on a vertical shaft 22 which turns in bearings 24 on the frame of the machine.

In order that the clamps may receive the necessary movements to present the heels to the shaping-cutter, they are arranged to be movable relatively to the carrier by which they are supported. For this purpose two cradles 2 6 are employed, these cradles being supported by curved guideways 28 on the carrier, so that they may be rocked to 'control the angle of bevel of the shaped surface of tthe heel. Each cradle 26 is provided with guideways upon which a slide 30 moves, and by meansl of mechanism including a spring 32 the slide is pressed outwardly on its ways, for the purpose of maintaining yielding engagement between the heel and the shaping-cutter.

In order to permit the swinging movement of the clamp, the bed 10 of the' clamp is .fixed on a short rock-shaft 34 which turns in a sleeve on the slide 30.

The various movements are imparted to the heel-clamp, as in the machine of' said patent, by cams mounted upon a cam-shaft 36. This shaft is connected, by gears 38, with a pulley 40 through which the machine may be connected with any suitable source of power. The rocking movement of the cradle-26 on its guideways is produced by a cam 42 which engages a roller on an arm 44 which is fixed to, and depends from, a rockshaft 46. The rock-shaft turns in. bearings on the frame of the machine, and carries an this purpose thelower end of the rock-shaft 34 is connected, by a universal joint 52, with the upper end of a telescopic rod 54 of which the lower end is connected, by a universal joint 56, with a short rock-shaft 58 whichturns in a bearing on the carrier. By means which are disclosed inthe said patent and need not be described herein, the rockshaft 58 is temporarily connected, during the shaping operation, with a rock-shaft 108 journaled on the frame of the machine, and a pinion 110, on the lower end of this rockshaft, meshes with a segmental gear 112 at the upper end of a lever 114. This lever is mounted on a pivot 116 on the frame of the machine, and its lower arm is provided with a roller 118 which engages a cam 120 on the cam-shaft 36. The mechanism just described is in all respects the same as in the machine of the said patent.

The exact shape, in plan, which is imparted to the heel is determined by the pattern-plate 18. A stop-plate 60 is fixed on the cradle, in position for its upper edge to be engaged by the ed e of the pattern-plate and in this manner t e forward movement .of the slide 30, under the influence of the spring 32, is limited. By a suitable formation of the pattern-plate the lateral surfaces of the heel may be made either convex or straight in plan, as may be desired. In`

the machine of the said Patent No. 1,102,310 the plate 60 acts also as a cutting member coperating with the edge of the shapingcutter, but in the present arrangement its function is limited to that just described, and accordingly the upper edge of the plate is preferably so located as to insure clearance between the plate and the edges of the cutter. This change hasno effect, however, on the location of the axis of the rocking movement of the cradle carrying the heel as disclosed in said patent.

The shaping-cutter comprises a disk 62 from which four segmental knife-blocks 64 rise integrally, and on, each knife-block a knife 66 is adjustably secured. The edges of the knives are ground to the form which it is desired to impart to the heel, and in the illustrated .machine they are shown as convex, so as to produce a shaped surface which is concave in vertical section. The hub of the disk 62 turns upon a vertical stud-staft 68 fixed in'a horizontal slide 70. This slide is mounted in stationary uideways 72, so that by movement of the sl1 e the traversing movement of the cutter ma be produced. The cutter is rotated by a pu ley 7 4 fixed to the hub thereof, this pulley being connected, through a belt 76, with any suitable source of power. The belt is so arranged as not to interfere with the traversing movement of the slide and the cutter. For this purpose it is passed around two-idler-pulleys 78, so that it ma extend upwardly to a driven pulley of su cient width to accommodate the traversing movement. These idler-pulleys are mounted upon the slide 70, so that no change in the tension of the belt is caused by the traversing movement.

The movement of the slide 7 0 is produced by a cam 80 on the cam-shaft 36. This cam engages a roller 82 carried by a bell-crank cam-lever 84. The horizontal arm 86 of this lever is connected, by a short link 88, with the horizontal arm of a bell-crank lever 90, pivoted at 92 on the frame of the machine. The upright arm 94 of the latter lever is forked to embrace a pin 96 fixed in a projection 98 from the end of the slide 70.

' finally to produce a slow return-movement ters the roller, then to hold the slide 70` stationary durin nearly one half-rotation of the cam, whi e the roller is in engagement with the part 124 of the cam, then to produce a further rapid traversing movement in the same direction as before, While the roller is engaged by the part 126, and

of the slide to its original position', While the roller is engaged by the part 128 of the cam. This return-movement occurs while the clamp-carrier is being swung to interchange the clamps and the heels carried thereby. f

In order that the dust and chips produced by the shaping-cutter may be collected and removed, the cutter rotates within a housing 100 mounted upon the slide 7 0, and the housing is provided with an opening in the upper part, coaxial with the cutter. The housing is provided, at the rear, with a flange 102 which bears against t'he forward lip of a box 104, ,which is fixed in stationary position on the frame of the machine, and this box may be connected, through a pipe 106, with any suitable system for exhausting waste-material. The flan-,ge and lip just referred to are parallel with the di- 10u The mode of operation of the machine is 106 ,4

illustrated particularly in Figs. 5 and 6, In Fig. 5 the parts are shown in the positions occupied at the commencement of the shaping operation. At this time the cutter engages the heel at one breast corner. 11a As the cutter rotates it is moved transversely, from left to right, so that its axis moves from the position a to the position b, (Fig. 5) thus completing the shaping operation on one of the lateral surfaces of the 116 heel. If the pattern-plate be so formed as to secure a convex form, in plan, to the lateral surface, the heel recedes slightly during the traversing movement of the cutter. When the traversing movement has brought 12@ the axis ofthe cutter to, or approximately to, the fore-and-aft plane in which lies the axis of the rock-shaft 34 about which the heel-clamp swings, the traversing movement ceases, and the clamp is then swung so as to bring the parts to the position of Fig. 6, the shaping of the rear surface of the heel being thereby completed. The traversing movement of the cutter is then resumed, thus moving its axis from the position b to the position c, (Fig. 6) whereby the other lateral surface of the' heel is trimmed. The heel is then removed from the cutter by the turning movement of the clamp-carrier, and the cutter moves back from the position c to the position a, ready to operate upon another While the invention has been described as embodied in a heel-shapin machine having the general structure am? organization of the machine of the said Patent No. 1,102,310, it will be apparent that it is not limited to such embodiment, but that it may be embodied in various other forms within the scope of the following claims.

What is claimed as new, is:

l. A heel-shaping machine having, in

combination, a rotary cutter; a work support arranged to support a heel withy it-s lateral surface in engagement with the cutter; means for causing a relative traversing movement of the work support and the cutter, to cause the cutter to shape the side of the heel; and means for turning the work support during said traversing movement to produce a surface at the side of the heel which is curved in plan, and for turning the work support, after the completion of the travers/ing movement, to cause-the cutter to shape .the rear surface of the heel.

2. A heel-shaping machine having, in combination, a rotary cutter; a worksupport adapted to hold a heel in engagement with the cutter; means for imparting to the work support a turning movement iirst through a slight angle, then through a large angle, and `then through a slight angle again; and means for imparting traversing movements to the cutter during the periods of slight ,turning movement, and holding the cutter substantially in stationary position during the period of great turning movement.

3. A. heel-shaping machine having, in combination, a shaping tool, a work support arranged to hold a heel in engagement with said tool, means for imparting a traversing movement to the tool in two steps with an intermediate dwell, and means for rotating the work support during the period of the dwell.

4. A heel-shaping machine having, in combination, a shaping tool; a-work support; means for advancing the tool in a rectilinear path from one breast corner along the side of a heel on the work support to trim said side; means for imparting an angular movement to the work support while thetool remains in a fixed position tol trim the back of the heel, and means for continuing the advance of the tool along the other side of the heel to the second breast corner to complete the trimming operation.

5. A heel-shaping machine having, in combination, a rotary cutter; a heel holder arranged to clamp a detached heel and support it in position with its lateral surface presented to the cutter; means for causing a relative traversing movement of the heel holder and cutter to trim the back of the heel; and means for causing the 'cutter to traverse the sides of the heel to trim said sides. v

6. A heel-shaping machine having, in combination, a trimming tool; a heel holder for supporting a heel with its lateral surface presented to the cutter; means for imparting relative rotary and rectilinear traversing movements to the tool and heel holder to produce a curved back and substantially straight sides on the heel; and means for automatically supplying heels to the heel holder.

7. A heel-shaping machine having, in combination, atrimming tool; a source of heel supply; a heel holder for transferring heels from saidl source ofI supply to a position with the lateral surface of the heel presented to the tool; means for causing a relative traversing movement of the heel holder and the tool, to cause the cutter to shape the side of the heel; and means for turning the heel-holder with the heel in engagement with the tool to cause the latter to shape the back of the heel. y

ERASTUS E. WINKLEY.

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