US2094120A - Machine for operating on soles - Google Patents

Description

J. FOSSA MACHINE FOR OPERATING ON SOLES Sept. 28, 1937.

Filed Oct. 25, 1935 e Sheets-Sheet 1 Q E k. A 0 Mg H. Nm \MJ nmJ Sept. 28, 1937. J. FossA 2,094,120

MACHINE FOR OPERATING ON SOLES Filed Oct. 25, 1955- e Sheets-Sheet 2 S ept. 28, 1937. J. FossA 2,094,120

MACHINE FOR OPERATING ON SOLES Filed Oct. 25, 1935 6 Sheets-Sheet 3 Fig? 4 QQQQ 7 60 Ijlllk 5 mnummm$ Sept. 28, 1937. v J. FOSSA 2,094,120

MACHINE FOR OPERATING ON SOLES Filed Oct; 25, 1935 6 Sheets-Sheet 4 I w m M%% 6 Sheets-Sheet 5 Sept. 28, 1937. J. FOSSA MACHINE FOR OPERATING ON SOLE'S Filed Oct. 25, 1935 Sept. 28, 1937. J. FOSSA MACHINE FOR OPERATING ON SOLES Filed Oct. 25, 1955 6 Sheets-Sheet 6 A/vE/WU Patented Sept. 28, 1937 FTE OFFICE MACHINE FOR OPERATING ON SOLES Application October 25, 1935, Serial No. 46,769

20 Claims.

This invention relates to methods of, and machines for, preparing unattached soles for attaching with adhesive cement. One of the customary preparatory. operations is to roughen a marginal band of the attaching face of a sole to insure a strong bond of the cement with which that band is to be subsequently coated.

This roughing operation has heretofore been performed with a rasp or an abrading wheel, neither of which is entirely satisfactory, particularly when, as is often the case, it is desired also to reduce the thickness of the margin either to remove fleshy substance from the marginal band or to make the sole appear thinner than its middle area.

Consequently, to improve the quality of the work and to expedite the reducing and the roughing operations the present invention provides an improved method one aspect of which consists in skiving a marginal band of the attaching face of a sole with a series of individual skiving cuts, and scoring fine cement-receiving grooves in that band while the skiving is in progress. The skiving cuts are not only more satisfactory than a rasp or an abrading wheel to remove fleshy substance, but they do so large a part of the .preparatory work that the scoring of the cement-receiving grooves may be accomplished without shredding the surface of the bandin which the grooves are formed.

Moreover, to satisfy a demand for soles that appear thinner in the shanks than in the foreparts the method above set forth may be utilized in a special way by making the skiving cuts deeper in the shanks than in the foreparts, and scoring the cement-receiving grooves in both parts with corresponding regulation of depth.

Preferably, and as herein shown, the skiving cuts are flat beveling cuts that progress across the marginal band from its inner boundary to its outer boundary, and whenever a change is made in the depth of the cuts it is accomplished by changing the angle of the bevel without appreciably varying the width of the band traversed by the cuts.

The invention also provides improvements in machines for reducing the thickness of solemargins in accordance with the requirements above explained. The illustrated machine, which embodies these improvements, comprises a work-supporting table and cutting means that are relatively adjustable to regulate the depth of the cutting by which the margin of the sole is reduced, means for feeding the sole, power-driven mechanism arranged to regulate the depth of the cutting by relatively adjusting the table and the cutting means at one or more intermediate stages of the cutting operation, and means controlled by the length of the sole to time the regulatory operations of the power-driven mechanism.

To accomplish the above-mentioned results by beveling the margin of a sole without varying the width of the beveled band, the sole-supporting table and the cutting means are so organized as to be relatively adjustable about an axis virtually tangent to the inner boundary of the band.

The invention also comprises various other novel features among which is an improved combination of controlling members, hereinafter termed triggers, by which the depth of the cutting is automatically regulated in accordance with the length of the sole in operation.

Referring to the drawings,

Fig. 1 is a front elevation of a machine embodying the present invention, the parts thereof being in their initial positions;

Fig. 2 is a side elevation of the cutter assemblage and a grinding device for sharpening the scoring bits thereof;

Fig. 3 is a plan view of the machine, certain parts of which are partly broken away and others shown in section;

Fig. 4 is a sectional View in a vertical plane and on a larger scale of the parts assembled adjacent to the cutting locality;

, Fig. 5 is a plan view of the parts within the range of line V--V of Fig. 4;

Fig. 6 is a perspective view; partly in section,

of automaticmechanism for adjusting the worksupporting table to regulate the depth of cutting at intermediate stages of operation on a sole;

Fig. 7 is a sectional View of an automaticallycontrolled clutch included in Fig. 6;

Fig. 8 is an elevation on a larger scale and from a different point of view of an assemblage of automatic-controlling mechanism that appears at the lower left of Fig. 1 and at the left of Fig. 3;

Fig. 9 is an elevation of a work-controlled trigger mechanism otherwise represented in Figs. 1 and 8;

Fig. 10 is a sectional view on line X-X of Fig. 8 of a friction device for maintaining certain parts of the automatic-controlling mechanism in one position for right soles and in another position for left soles:

Fig. 11 is a top-plan view of the rotary cutter for skiving a marginal band of a sole;

Fig. 121s a perspective view on a magnified scale of one of the scoring or roughing bits that operate on the marginal band of a sole;

Fig. 13 is a cross-section through one of the roughing bits, see line XIIIXIII of Fig. 12;

Fig. 14 is a perspective view, partly in section, of a sole, the marginal band of which has been skived and roughened by the illustrated machine; and

Fig. 15 is a diagrammatic plan view including a series of triggers arranged to be actuated automatically by a sole in transit through the machine and to control the automatic mechanism represented in Fig. 6. Fig. 15 also includes outlines of a sole at successive stages of its progress during operation thereon.

The skiving cutter (Figs. 2, 4, 5 and 11) is a rotary disk slightly crowned and provided with a series of cutting teeth, the cutting edges 2| of which are arranged to skive a marginal band 22 of a sole 23 such as that represented in Figs. 4 and 14. This cutter is carried by a cutterhead affixed to the lower end of a rotary powerdriven shaft 24 journaled in bearings formed in a yoke 25. The axis of the shaft 24 is inclined to insure a beveling effect of the skiving cut and to restrict the cutting to a single operating 10- cality as close as possible to the feeding and guiding members hereinafter described.

The scoring or roughing bits 29 (Figs. 1, 2, 4 and 12) are carried by a collar 27 affixed to the shaft 24 and constituting a part of the rotary cutter assemblage. The bits 26 are preferably grooved and ground to provide a series of sharp points 28 all arranged in a common circle 00- incidental, or nearly so, with the outer extremities of the skiving edges 2|. Their effect is to score cement-receiving grooves in the skived surface of the sole. As herein illustrated the skiving cutter and the roughing bits are so assembled that the skiving edges 2| and the bits attack the work alternately, and their direction of rotation is such as to cause their operation on a sole to progress from the inner boundary of the marginal band 22 to the outer boundary thereof. This condition of operation utilizes the skiving means and the roughing means to maintain pressure of the perimeter of the sole against the edge-guiding means hereinafter described. Each roughing bit is affixed to the collar 27 by an individual clamping screw 30 and is provided with a slot 3| that provides for adjusting it lengthwise to regulate the depth of the grooves scored thereby in the marginal band of the sole. Moreover, the bits 26 are mortised into grooves formed in the collar 21 and are thereby positively braced against turning about the screws 30.

The yoke 25 is provided with a hollow cylindrical stem 3| that serves not only to secure it to a support but also to provide a bearing for a shaft 32 driven continuously at high speed by a pulley 4| and a belt, not shown. The stem 3| extends through a split clamping boss 33 adjustably secured to the frame of the machine. Clamping screws 34 serve to contract the boss 33 to clamp the stem 3| which is capable of being adjusted therein axially and rotatably to locate the cutter assemblage in the desired position to attack the work at the point indicated by a dot H) in Fig. 5. Rotation is transmitted from the shaft 32 to the cutter-shaft 24 by helical gears 35, 36.

A spline connectionbetween the gear 36 and the cutter-shaft 24 provides for adjusting the latter endwise to locate the cutter assemblage at the desired level according to the thickness of a sole,

and the yoke 25 is provided with an adjusting screw 31' for this purpose. This screw is rovided with two flanges spaced apart to receive between them a notched lug projecting from a sleeve 38 as shown in Fig. 1, the sleeve being arranged to slide endwise in the yoke 25 and providing a bearing for the upper portion of the cutter-shaft. A collar 40 affixed to the cuttershaft bears upon the sleeve 38 to support the shaft.

The clamping boss 33 and a bearing block 42 are formed as a single casting and are mounted upon a platform 43 formed on the main frame of the machine. A pivot stud 44 extends through the block 42 and is screwed into the platform 43 to provide for adjusting the cutter assemblage in a horizontal plane. The platform 43 is provided with a notch 45 (Fig. 3) to receive a clamping screw 46 by which the adjustable bearing member may be clamped against the platform in any desired position of adjustment.

The transmission shaft 32 supports a head 41 in which a grinding device is mounted to provide for sharpening the roughing bits 26. This shaft extends loosely through a portion of the head 41 and the latter is provided with bearings for an upright shaft 48 that carries an abrading wheel 49 at its lower end. A helical gear 50 loosely mount-ed on the shaft 32, and a helical gear 5| splined on the shaft 48 may be caused to transmit rotation to the latter, but the spline connection between the gear 5| and the shaft 48 provides for depressing the latter against the force of a compression spring 52 that normally raises the abrading wheel 49 above its operative position. A finger-piece 53 mounted on the upper end of the shaft 48 provides for manual depression of the shaft.

The head 41 is connected with the yoke 25 by a link 54 that serves to adjust the abrading wheel 49 in the desired relation to the bits 26. One end of this link is connected to the head 41 by a pivot pin 55 and the other end is in the form of a screw-shank and extends through a finger nut 55 mounted on the yoke 25 so that it may be rotated without moving axially. When it is desired to sharpen the bits 26 the operator first shifts the driving belt from the tight pulley 4| to a loose pulley 39 and then turns a screw collar 29 (Fig. 3) against a friction facing carried by the loose gear 59. He then returns the driving belt to the tight pulley 4|, presses down on the finger-piece 53 to depress the abrading wheel into engagement with the bits 26, and releases the finger-piece after a few seconds of abrasion.

A sole to be skived and roughened is presented heel end foremost to the cutter assemblage under which it is guided and fed automatically and supported by a rotary driven table 51, the rotation of which assists the feeding of the sole, see Figs. 1, e, 5 and 15. Referring to Fig. 4, the work table 57 is affixed to the upper end of a driven shaft 58 journaled in a rocker 60 that provides for tilting the table about a horizontal axis indicated by a dot 59 in Fig. 4. This axis is tangent to the inner boundary of the marginal band 22 of a sole at the point of attack indicated by the dot |9 in Fig. 5, and because of its location a rocking motion of the table will regulate the depth to which the marginal band is skived without producing any appreciable variation in the width of the band. Certain automatic mechanisms hereinafter described are controlled by a sole in transit to tilt the table 51 about the axis 59, first when running from the shank of the sole to the forepart to decrease the depth of the skiving, and subsequently when running from the opposite side of the forepart into the shank to increase the depth of the skiving.

To provide for the described tilting of the table 51, the rocker 60 is provided with a segmental curved foot-piece 6| arranged to slide in correspondingly curved grooves formed in spaced cheeks of a fixed support 62. The rocker 60 is also provided with a bearing for a transmission shaft 63. The train of mechanism for driving the table 57 comprises mitre gears 64 and B5, shaft 63, universal joint 66, telescopic shaft 6?, universal joint 68 (Figs. 1 and 3), shaft 69, bevel gears H! and H, shaft 12, worm gear 13, worm 14, slow-speed shaft 15 and pulley 76 on which a driving belt may run.

Again referring to Fig. 4, a knurled feed-roll H is arranged to cooperate with the margin of the table '5'! to grip the margin of the sole and to feed the sole. The train of connections for driving the feed-roll l1 comprises a shaft 18, a pinion 19, and a spur-gear 80 aiiixed to the shaft 63. The shaft 18 is journaled in a bearing member 8i pivotally mounted in the rocker 68 to which it is connected by horizontal trunnions 82 which provide for movement of the feed-roll ll toward and from the work-supporting table 57. A compression spring 83 normally depresses the feed-roll Tl into engagement with a sole if one is present.

The rocker 60 also carries two driven rolls 8d and arranged in tandem relation, their peripheries being arranged to be engaged by the perimeter of the sole to guide the latter. As shown in Fig. 5, these guide-rolls are so situated that the knurled feed-roll ll operates on a portion of the sole that lies between their points of contact with the sole. Moreover, these three rolls are so arranged that the roll H, while feeding the sole, exerts a component of force that maintains the perimeter of the sole against both of the guiderolls 84 and. 85, and the heel end of the sole is thus swung toward the left and thence toward the front of the machine when the toe end is in contact with them.

The driving train for operating the roll 85 receives rotation from the shaft 58 and comprises a spur-gear 86, a pinion 8'! and a shaft 38, the roll 85 being carried by the latter. The roll 8d receives rotation from the shaft 88 through pinions 89, 89, and an intermediate gear 98 connecting them.

If it were desired to skive and roughen the margin 22 of a sole to a uniform depth in both the shank and the forepart the mechanism hereinbefore described would be suificient, but it is usually preferred, particularly with regard to soles for womens shoes, to reduce the margins more deeply in the shanks than in the foreparts. Accordingly, the present invention provides additional mechanism for regulating the depth of the reduction automatically, first when running from the shank to the forepart at one side of the sole and thereafter when running from the forepart to the shank at the other side, to the end that both sides of the shank will be reduced to the same depth although the forepart will be reduced to a lesser depth.

To illustrate the controlling effect of a sole in such regulation, Fig. 15 represents a sole at seven successive stages of its passage through the machine, its successive positions being numbered I to VII. Position I illustrates the manner in which a sole is presented heel-end-foremost to the feeding members and the cutter-head. At this stage, and until the sole has been fed to position II, the rocker 69 remains in the position represented in Fig. 4, thereby causing relatively deep reduction of the margin 22 along one side of the sole. When the sole reaches position II the rocker Ell is rocked in a clockwise direction about the axis 59, and the depth of the reducing out is thereby decreased to a predetermined Variable extent and remains constant while the sole is being fed from position II to position V, at which stage the rocker 6E3 begins to return to its initial position represented in Fig. 4. This return movement of the rocker is completed when the sole reaches position VI, and the rocker then remains stationary until the next sole is fed to position II.

When the sole is presented manually to the feed-roll Tl, it is inserted under a plate 92 which, as shown in Fig. 1, is slightly above the level of the supporting table 51. This plate is stationary except that it partakes of the slight rocking movements of the rocker 643 to which it is attached by a gooseneck Q9. The purpose of the plate 92 is to prevent the forepart of the sole from being raised above a certain level by a trigger 93 that controls the first regulatory movement of the rocker. This trigger stands initially at the level shown in Fig. 1, but it may be raised into contact with the lower face of the sole by a treadle mechanism when the heel-end of the sole is about to be gripped by the feed-roll 7?. As shown in Figs. 1 and 15 the trigger Q3 underlies the plate 92 and is arranged to underlie also the shank and the forepart of the sole when the latter stands at position I.

A treadle (not shown) is connected to the lower end of a rod 9 (Figs. 1 and 8) and serves to depress the rod. The upper end of this rod is attached to a bracket 95 mounted on two parallel bars 95 and connected thereto by pivot-studs 973. These bars, in turn, are mounted on two stationary fulcrum studs 98 supported by a portion of the main frame of the machine. The opposite ends of the bars 96 carry another bracket N16 to which they are connected by pivot Studs Bill. The bracket H30 provides a horizontal platform on which a stand #02 is adjustably mounted, the stand constituting a support for the trigger 93 which is connected thereto by a pivot-pin E83 and by a spring 934. The spring I04 tends normally to raise the work-engaging portion of the trigger 93, but a gravity-latch Hi5 connected to the trigger by a pivot-pin 186 is arranged to be caught initially by a finger Ill! as shown in Fig. 9. The purpose of the finger it! is to set in operation an automatic mechanism that tilts the rocker Ell from the position shown in Fig. 4 to another position when the forepart of a sole is about to pass under the cutter-head.

Referring to Fig. 8, the bracket 95 carries another tri ger EBB which, through controlling mechanism to be described, causes the return of the rocker 63 to the position shown in Fig. 4 after the forepart of the sole has passed under the cutter-head and when the shank of the sole is about to pass a second time thereunder. The trigger N38 is mounted on a pivot-pin I09 supported. by a stand i it, and this stand is adjustably mounted on a platform provided by the bracket 95. The stands i132 and HG are adjustable toward and from each other to loctate the triggers 93 and m8 at different distances one from the other in accordance with soles of different lengths. For this purpose the brackets 95 and IE9 are provided with slots I l [in which ribs formed on the bottoms of the stands I02 and I I0 are arranged to slide. The two stands are connected by an adjusting rod H2 provided with a right-hand screw-thread for adjusting the stand H0 and with a left-hand thread for adjusting the stand I92, the nuts H3 with which these screw-threads cooperate being attached to the stands respectively by swivel connections that permit them to turn about individual horizontal axes at right angles to the axis of the adjusting rod H2. These swivel connections provide for raising the bracket I 09 as the bracket is depressed and vice-versa. As shown in Fig. 3, the swivel connections are provided by screwshanks formed on the nuts H3 and screwed into sockets formed in the stands.

The adjusting rod I I2 is provided with a handcrank H4 by which it may be rotated to effect the desired horizontal adjustment of the triggers 93 and I08. Two collars I I5 afiixed to the rod II 2 are spaced apart to receive and embrace one end of a bell-crank lever I8 by which the rod may be moved endwise to shift the triggers 93 and I03 collectively to the left for a right sole and to the right for a left sole. A rod H'I communicates upward and downward motion to the bellcrank lever from a double-acting treadle (not shown). The bell-crank lever H9 is pivotally mounted on the lower fulcrum stud 99 and is provided with a disk II 9 of friction material, such as leather (see Fig. 10), that bears with sufiicient pressure against a portion of the frame structure to maintain the lever in any position to which it is moved by the treadle-rod Hi.

Two adjustable stops I20 arranged in the slots H I of the bracket I00 are adapted to be clamped to the bracket by wing nuts, and the stand I02 is adapted to slide to and fro between them, the purpose of the stops being to establish the desired limits of travel of the stand for right and left soles.

When the machine is not in actual operation on a sole, the platforms 95 and I00 are maintained at the levels shown in Fig. 8 by a tension spring I2I, these levels being established by a finger I22 carried by the lower bar 96 and arranged to bear upon a fixed abutment, such as a portion of the machine frame. The lower end of the spring I2I is connected to the lower bar 96, while the upper end thereof is attached to an anchoring pin projecting from a portion of the frame. When a sole has been inserted between the trigger 93 and the overhanging plate 92 as above stated, the operator depresses the treadle with which the rod 94 is connected, thereby depressing the trigger I98 below the plane of travel of the sole 23 and raising the trigger 93 against the forepart of the sole now braced by the overhanging plate 92. The trigger 93 stands initially in the position represented by dotted lines in Fig. 9, the latch I95 being then released from the finger I0! by a knock-off finger H9, but when the bracket I90 is raised by the treadle the sole arrests the trigger and thereby causes the latch to engage the finger as shown in this view.

The raising of the bracket I00 also carries a shoulder 22I of that bracket above a tooth I23 projecting from a latch I24, whereupon the tooth is drawn under the shoulder by a tension spring I25. This latch is mounted on a stationary pivotstud I26 and its upper end is connected by a link I21 with still another trigger I28. This trigger is mounted on a pivot-stud I29 projecting from a portion of the frame, and its purpose is to maintain the trigger 93 at its operating level during the early stages of operation on a sole 23 and at the same time to maintain the trigger I08 below the level of the sole, as indicated by dotted lines in Fig. 8, to the end that the heelend of the sole may pass over it without striking it. Nevertheless, when the operation has progressed to the stage represented by position III in Fig. 15 the shank portion of the sole deflects the trigger I28 in the manner indicated in Fig. 8 and thereby disengages the latch I24 from the shoulder I22 to release the bracket I00. When this release occurs, the spring I2I raises the trigger I08 and depresses the trigger 93 to the respective levels illustrated in Fig. 8, the trigger 93 having in the meantime performed its function and the trigger I08 having not yet done so. A stationary work-supporting plate I 39 (Figs. 1, 3 and 15) is arranged to prevent the sole from sagging over the edge of the rotary table 51, and thus prevents the heel end of the sole from fouling the trigger I08.

The controlling eifect of the trigger 93 occurs when the sole has progressed to position II shown in Fig. 15, at which stage the toe-end of the sole passes out of contact therewith and per mits this trigger to rise under the influence of the spring I04. Although the movement imparted to the trigger 93 at this stage is slight, it is sufiicient to move a train of light connections comprising the latch I05, the finger I 01, a slender flexible wire I30 secured to the finger and sheathed in a flexible tubular casing I3I, and a latch I32 (Figs. 1, 3 and 6) to which the other end of the wire I30 is secured. This actuation of the wire I30 disengages the latch I32 from a shoulder formed on an arm I33 of a clutch-controlling lever that also comprises an arm I34. The latch I32 is mounted on a pivot-stud I35 (Fig. 1) and is normally maintained in contact with the arm I 33 by a light torsion spring I36. Although the force of the spring I36 is opposed to that of the spring I04 (Figs. 8 and 9), the latter spring is more powerful and is capable of retracting the latch I32 in the manner described. At the same time the finger I0? (Fig. 9) is released from the latch by the knock-off finger I I9.

The clutch-controlling lever comprising the arms I33 and I34 is affixed to a rock-shaft I31 by which clutch-controlling movement is communicated to an arm I38 and a link I40, and by the latter to a start-and-stop member I4I arranged to rock on a pivot-stud I42 projecting from the machine frame. The lever I33, I34 stands initially in the position shown in Fig. 1, but when it is released by tripping the latch I32 it is rocked a few degrees in a clockwise direction by a springpressed plunger I43 contained in a barrel I44, and the motion thus communicated to the rockshaft I37 produces a corresponding motion of the start-and-stop member I4I, with the result that a roller clutch controlled thereby is set in operation to rotate an eccentric I41 through The driving member I45 of the clutch is carried by a shaft I49 that rotates continuously in a clockwise direction. The driven member I49 of the clutch carries an eccentric I41 by which the rocker 60 (Fig. 4) is rocked in the manner hereinbefore described.

The train of connections for communicating motion from the eccentric I41 to the rocker 60 comprises an eccentric strap I48, a turn-buckle I59, a lever I5I, a rock-shaft I52, an arm I53, and a link I 54, the latter being pivotally connected to the segmental foot-piece 6| of the rocker. The

extent of the motion thus imparted to the rocker may be regulated by adjusting the lower end of the turn-buckle I56 toward and from. the axis of the rock-shaft I52, the lever I5! being provided with a slot I55 for that purpose.

When the above-described starting motion is imparted to the member I4I, the arm I38 (Fig. 6) that plays a part in that operation is placed under control of a retaining latch I56 mounted on stationary pivot I51 and normally raised to its latching position by a weak tension spring I 58. The purpose of the latch I56 is to prevent the starting-and-stopping member I M from returning to its initial position until the operation on the sole has progressed around the forepart and is about to run into the shank when the sole is at position V (Fig. 15).

The half-revolution of the eccentric I 4'! that carries it from bottom center (Fig. 1) to top center is communicated also to the barrel 544 through a train of connections comprising a link I66 connecting the eccentric strap I48 and an arm NH, and a rock-shaft I62 to which both the arm IGI and the barrel I44 are affixed. The described half revolution of the eccentric I47 turns the rock-shaft I62 in a clockwise direction far enough to shift the spring-pressed plunger I43 from the arm I33 to the arm I34 of the clutch-controlling lever. Thus, when the plunger I43 is being shifted to the arm I34, it is repressed thereby into the barrel I44 and its applied force against the arm I34 tends to turn the rock-shaft I3? in a counterclockwise direction, but since the arm B38 is now caughtbythelatch I56 this counterclockwise turning is postponed until the latch is retraced in a manner to be described.

As shown in Figs. 3 and 6, the outer end of the spring-pressed plunger 43 is provided with a groove to receive a margin of the arm I33 or a margin of the arm I34, as the case may be, these arms being formed to provide one continuous incurved margin on which the plunger may slide. Moreover, the hub of this lever is provided with a groove (Fig. 3) through which the end of the plunger may pass without obstruction.

Although any suitable type of clutch may be utilized to drive the eccentric I47 with steps of 180 each, the clutch shown in Figs. 6 and 7 is of the well-known Horton type that comprises rollers and wedging surfaces engaging them. The

rollers are surrounded by a ring forming a part of the driving member I45, and are spaced apart by segments projecting from a ring I63 on the periphery of which a tooth or shoulder I64 is formed. The ring I63 is carried by the driven member I49 and connected thereto by a pin with provision for a limited relative turning movement sufiicient to set up a wedging action against the rollers when the tooth I64 is released by the member I4 I. A tension spring I59 connecting the parts I49 and I63 then acts to set the clutch in operation.

When the parts are in their initial positions as shown in Figs. 1 and 6 the tooth I64 is engaged by an abutment I65 carried by the member NH, and the driven member of the clutch is thus not only disengaged from the driving member but is restrained against rotation. The member I4I also carries an abutment I66 which is diametrically opposite the abutment I65 and which is so arranged as to be moved into the path of rotation of the tooth I64 when the abutment I65 is retracted from the path. Consequently, the abutments I65 and I66 act alternately to control the clutch so that the eccentric I41 will be driven intermittently with steps each limited to 180.

The clutch receives rotation from. the slowspeed shaft I5 through a transmission train comprising the shaft I46, a spur gear I66 (Fig. 3),

a pinion I6'I',-a shaft I66, a helical gear I10, and a helical gear ii I, the latter being carried by the shaft I5.

As hereinbefore explained, the effect of the trigger I23 (Fig. 8) is to raise the trigger I08 into the path of the sole after the heel end of the sole has passed over the latter trigger, and at the same time to depress the trigger 93. From this stage the sole progresses to position V, without any further operation of the eccentric I41, but when the sole reaches position V its toe-end strikes and displaces the trigger I08, at which stage the operation on the sole is about to run from the forepart to the shank.

Referring to Fig. 15, the horizontal displacement of the trigger I68 from the position represented in full lines to that represented in broken lines communicates controlling movement to the latch I56 (Fig. 6) through a train ofconnections comprising a link I12 (Fig. 8), a bell-crank lever I13 and a slender flexible wire I'M, one end of which is attached to the lever I13 and the other end to the latch I56, as shown in Fig. 6. This wire is sheathed in a flexible tubular casing I'I5, the ends of which are affixed respectively to the stand I I 6 (Fig. 8) and to a portion of the machine frame (Fig.6) The applied force of the spring I58 (Fig. 6) is not sufficient to prevent the latch I56 and the trigger I68 from moving in response to the impact of the toe-end of the sole against the trigger.

It is to be borne in mind that when the operation on the sole is progressing around the forepart thereof, the parts shown in Fig. 6 will not stand in the relative positions shown in that figure but will be otherwise positioned as follows. The arm I38 will be caught behind a shoulder at the free end of the latch I 56, the spring plunger I43 will be raised from the arm I33 to the arm I34, the eccentric I 4I will be at top center, and

the tooth I64 on the clutch ring I63 will be caught and arrested by the abutment I66. Now, when the latch I56 is actuated by the trigger I68 it releases the arm I 38 and permits the rock-shaft I3I to turn in a counterclockwise direction under the influence of the spring plunger I43 and the arm I34. The arm I 38 now retracts the abutment I66 from the tooth I64 and places the abutment I65 in its stopping position. The clutch now turns the eccentric I47 to bottom center and thereby operates the eccentric strap I48, the turn buckle I56, the lever I5I, the rock-shaft I52, the arm I53, the link I54, and the rocker 60 to return the work-supporting table 51 to the position shown in Fig. 4. The cutter-head thereafter skives the shank portion and the heel-end of the sole more deeply than the forepart but to the same depth as it did during the first stages of the operation along the opposite side of the heel-end and the plunger I43, which is thereby depressed from the arm I34 to its initial position against the arm I33 Where it will remain in readiness to repeat its cycle of operations when the next sole is presented to the machine.

A summary of the high points of the cycle of operations is as follows. Assuming that the triggers 93 and I08 have been adjusted horizontally for soles of a given length and style and that the operator elects first to present successively all the right soles of the lot in hand, he will let the stands I02 and I II] (Fig. 8) remain in the positions shown until he is about to present the corresponding left soles.

When he has inserted the heel-end or the shank portion of a sole between the trigger 93 and the overhanging plate 92 he will operate the treadle that depresses the rod 94, thereby elevating the trigger 93 against the bottom of the sole and at the same time depressing the trigger I08 below the level of the path of the work. Having advanced the sole manually into engagement with the feed-roll 11 (Fig. 4), he is relieved from all further duty concerning that sole. The feed-roll 11 now takes up the feeding duty and immediately carries the heel-end of the sole against the guide- rolls 84 and 85 and thereafter maintains the perimeter of the sole against both of these rolls continuously until the sole is fed out and discharged toe foremost at the rear of the machine.

While the feed-roll and the cutter-head are traversing the heel-end and the shank portion of the sole during the early stages of the cycle, the rotary work-supporting table 51 remains at the angle shown in Fig. 4 and thereby causes relatively deep cutting of the marginal band 22, but when the toe-end of the sole is carried beyond the trigger 93 (see position II in Fig. 15) this trigger initiates automatic operation of the power-driven mechanisms that reduce the depth of cutting by tilting the table 51 in a clockwise direction about the axis indicated by the dot 59 in Fig. 4. The period of transition over which this regulation of the depth of cutting extends is coextensive with a feeding movement of about of an inch, and if the preliminary setting of the triggers is correct for the length of the sole in operation the transition will occur While the cutting operation is progressing from the shank to the forepart of the sole.

The heel-end of the sole now swings to the left from position II, and at this stage it is sustained against sagging by the supplemental supporting plate I39 so that it may pass over the depressed trigger I08 without encountering obstruction therefrom. While the sole is progressing from position III to position IV, it deflects the trigger I28 and passes thereover. The effect of this trigger is to elevate the trigger I08 into the path of the sole where it will stand in readiness to be deflected by the toe-end of the sole when the latter has progressed to position V.

In progressing from position V to position VI,

the sole deflects the trigger I08 to the left at a' stage when the cutting operation is progressing from the forepart of the sole to the shank portion after having traversed the toe-end. Now, in consequence of deflection of the trigger I88 the rotary work-supporting table 51 is returned to the angle shown in Fig. l, and the original depth of cutting of the margin 22 is resumed, the period of transition again being coextensive with about of an inch of feeding movement. From this stage the cutting operation continues without further change and since the trigger I08 is now raised and obstructs widthwise movement of the forepart the sole is constrained to progress lengthwise until it finally drops toe foremost from the supplemental supporting plate I39. When the cycle is thus completed the various parts occupy their initial positions in readiness for the insertion of the next sole.

To shift the triggers 93 and I08 to their corresponding positions for left soles, the operator is required merely to depress the heel of the treadle to which the rod II'I (Fig. 8) is connected. This raises the toe-end of that treadle and the rod III, the effect being to shift both of these triggers to the right as far as the right-hand abutment I29 will permit.

Having thus described my invention, What I claim as new and desire to secure by Letters Patent of the United States is:

1. That improvement in methods of preparing unattached soles for attaching with adhesive ce ment, which consists in skiving a marginal band of the attaching face of a sole with a series of individual skiving cuts and scoring cement-receiving grooves in said band while the skiving is in progress.

2. That improvement in methods of preparing unattached soles for attaching with adhesive cement, which consists in skiving a marginal band of the attaching face of a sole with a series of individual skiving cuts, making such cuts deeper in the shank than in the forepart, and scoring cement-receiving grooves in said band in both the shank and the forepart while the skiving is in progress.

3. That improvement in methods of preparing unattached soles for attaching with adhesive cement, which consists in skiving a marginal band of the attaching face of a sole with a series of individual skiving cuts across said band, and scoring cement-receiving grooves in said band While the skiving is in progress.

4. A machine for operating on soles comprising a table for supporting an unattached sole, edgeguiding means on which the perimeter of the sole may run, cutting means arranged to skive a marginal band of the sole adjacent to said edge-guiding means, means arranged to feed the sole to present said band progressively to said cutting means, automatic power-driven mechanism arranged to regulate the depth of the skiving by relatively adjusting said table and said cutting means at an intermediate stage of the skiving operation, and means controlled by the length of the sole to time the regulatory operation of said power-driven mechanism.

5. A machine for operating on soles comprising a table for supporting an unattached sole, edgeguiding means on which the perimeter of the sole may run, cutting means arranged to bevel a marginal band of the sole, said table and said cutting means being relatively adjustable about an axis contiguous to a longitudinal boundary of said band at the cutting locality to regulate the quantity of stock to be out from the band, and means arranged to feed the sole to present said band progressively to said cutting means.

6. A machine for operating on soles comprising a table for supporting an unattached sole, an edge-guide arranged to be engaged by the perimeter of the sole, cutting means arranged to bevel a marginal band of the sole, said table and said cutting means being relatively adjustable about an axis contiguous to a longitudinal boundary of said band at the cutting locality to regulate the quantity of stock to be cut from the band,

means arranged to feed the sole to present said band progressively to said cutting means, a trigger arranged to be engaged and deflected by the sole, and power-driven start-and-stop mechanism controlled by said trigger and arranged to alter the cooperative relation of said table and said cuttings means with relative adjusting movement about said axis.

7. A machine for operating on soles comprising a table for supporting an unattached sole, an edge-guide arranged to be engaged by the perimeter of the sole, cutting means arranged to bevel a marginal band of the sole, said table and said cutting means being relatively adjustable about an axis contiguous to a longitudinal boundary of said band at the cutting locality to regulate the quantity of stock to be cut from the band, means arranged to feed the sole to present said band progressively to said cutting means, a plurality of triggers arranged to be engaged successively and moved by a sole, and power-driven start-andstop mechanism controlled by said triggers to alter the cooperative relation of said table and said cutting means with. relative adjusting move ments about said axis alternately in opposite directions.

8. A machine for operating on soles comp-rising a table for supporting an unattached sole, an edge-guide arranged to be engaged by the perimeter of the sole, cutting means arranged to bevel a marginal band of the sole, said table and said cutting means being relatively adjustable about an axis tangent to the inner boundary of said band at the cutting locality to regulate the quantity of stock to be cut from the band, means arranged to feed the sole to present said band progressively to said cutting means, and means arranged to alter the cooperative relation of said table and said cutting means with relative adjusting movement about said axis while the machine and a sole are in operation.

9. A machine for operating on soles comprising a table for supporting an unattached sole, an edge-guide arranged to be engaged by the perimeter of the sole, cutting means arranged to bevel a marginal band of the sole, said table being adjustable about an axis contiguous to the inner boundary of said band at the cutting locality to regulate the quantity of stock to be cut from the band, means arranged to feed the sole to present said band progressively to said cutting means, a trigger arranged to be engaged and moved by a sole, and mechanism controlled by said trigger to adjust said table With movement about said axis.

10. A machine for operating on soles comprising means arranged to operate on a marginal band of an unattached sole, an edge-guide, power-driven means arranged to feed the sole to present said band progressively to said operating means with a component of edgewise pressure against said edge-guide, a power-driven start-and-stop mechanism arranged to alter the setting of said feeding means to regulate the presentation of the work to said operating means, and means arranged to be actuated by the sole to control the regulatory operation of said startand-stop mechanism.

11. A machine for operating on soles comprising cutting means arranged to operate on a marginal band of an unattached sole, an edge-guide, power-driven means arranged to feed the sole to present said band progressively to said cutting means With a component of edgewise pressure against said edge-guide, a power-driven startand-stop mechanism arranged to alter the setting of said feeding means to regulate the cutting effect of said cutting means, and a series of triggers arranged to be engaged successively by the sole, said start-and-stop mechanism being controlled by said triggers to function with regulatory efiect and the triggers being arranged to exercise their controlling effect according to the length of a sole.

12. A machine for operating on soles comprising a Worksupporting table, cutting means arranged to reduce the thickness of the margin of an unattached sole on said table, power-driven means arranged to feed the sole and turn it about to present a marginal band thereof progressively to said cutting means, means arranged to guide the sole by its perimeter, a trigger arranged to be engaged by the trailin end of the sole, and power-driven mechanism controlled by said trigger to alter the reducing effect of said cutting means by changing the position of said table in consequence of feeding the sole out of engagement with the trigger.

13. A machine for operating on soles comprising a work-supporting table, cutting means arranged to reduce the thickness of the margin of an unattached sole on said table, power-driven means arranged to feed the sole and turn it about to present a marginal band thereof progressively to said cutting means, means arranged to guide the sole by its perimeter, a trigger arranged to be deflected by the sole progressing under the propelling force of said feeding means, another trigger controlled by the first said trigger and arranged to be brought thereby into the path of the sole, and power-driven mechanism controlled by said other trigger to alter the reducing efiect of said cutting means by changing the position of said table.

14. A machine for operating on soles comprising a work-supporting table and cutting means cooperatively related to reduce the thickness of the margin of an unattached sole and relatively adjustable to regulate the depth of the reducing cut, power-driven means arranged to feed the sole and turn it about to present a marginal band thereof progressively to said cutting means, two triggers arranged to be engaged successively by a sole advancing under the propelling force of said feeding means, automatic means arranged to be tripped by the sole to retract one of said triggers from the path of the sole after it has functioned and to move the other one into said path at another point thereof, and power-driven mechanism controlled alternately by said triggers to effect relatively great reduction of the thickness of said margin at both sides of the shank of the sole and less reduction in the forepart by relatively adjusting said table and said cutting means twice while the reducing operation is in progress.

15. A machine for operating on soles comprising a work-supporting table and cutting means cooperatively related to reduce the thickness of the margin of an unattached sole and relatively adjustable to regulate the depth of the reducing cut, power-driven means arranged to feed the sole and turn it about to present a marginal band thereof progressively to said cutting means, two triggers arranged to be engaged successively by a sole advancing under the propelling force of said feeding means, automatic power-driven means controlled alternately by said triggers to regulate the depth of the reducing out twice during each sole-reducing operation by relatively adjusting said table and said cutting means, and

means by which said triggers may be shifted collectively to certain operative positions for a right sole and to certain other operative positions for a left sole.

16. A machine for operating on soles comprising cutting means arranged to skive a marginal band of an unattached sole, power-driven mechanism arranged to feed the sole to present said margin progressively to said cutting means and to turn the sole about when one end thereof is at the cutting locality, and automatic mechanism controlled by the sole to regulate the depth of the skiving cut at one or more points along the length of said margin by altering the cooperative relation between said feeding mechanism and said cutting means, an element of said feeding mechanism being arranged to brace the sole against said cutting means.

1'7. A machine for operating on soles comprising a rotary table for supporting an unattached sole, spaced guides arranged to engage the perimeter of the sole in tandem relation, a powerdriven feed-roll the periphery of which is arranged to cooperate with said table to grip the margin of the sole between the points engaged by said guides and is also movable in a direction to feed the sole and turn it about with a component of edgewise force against said guides, and power-driven roughing means arranged to operate on a marginal band of the sole at a point supported by said table.

18. A machine for operating on soles comprising cutting means arranged to bevel a marginal band of an unattached sole, and an angularly adjustable unit arranged to guide and feed the sole to present said band progressively to said cutting means, said unit comprising spaced guides arranged to engage the perimeter of the sole in tandem relation and two rotary driven feeding members one of which is arranged to brace the margin of the sole against said cutting means, said feeding members being arranged to grip the sole and feed it with a component of edgewise force against said guides, and said unit being adjustable about an axis adjacent to the inner boundary of said band at the cutting locality.

19. A machine for operating on soles comprising a work-supporting table, an edge-guide arranged to be. engaged by the perimeter of an unattached sole, and a rotary driven cutter-head having one or more cutting edges arranged to skive, and one or more scoring bits arranged to roughen, a marginal band of the sole with movement in a direction to maintain the perimeter of the sole against said edge-guide.

20. A machine for operating on soles comprising a work-supporting table, an edge-guide arranged to be engaged by the perimeter of an unattached sole, and a rotary driven cutter-head having one or more cutting edges arranged to skive, and one. or more scoring bits arranged to roughen, a marginal band of the sole with movement in a direction to maintain the perimeter of the sole against said edge-guide, said cutting edges and said bits being relatively adjustable to regulate the roughing effect of the bits.

JOSEPH FOSSA.

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