US2015064A - Sole fitting machine - Google Patents

Description

Sept. 24, 1935. F. E. BERTRAND SOLE FITTING MACHINE Fileq March 'i, 1935 ll Sheets-Sheet 1 em. 4,1935. F. E. BERTRAND MW SOLE FITTING MACHINE Filed March '7, 1955 "ll Sheets-Sheet 3 Sept. 24, m5. F E B AND zmswm SOLE FITTING MACHINE Filed March 7, 1933 ll Sheets-Sheet 4 394 K J 353 H Sept 24, E935; F BER-[RAND ZMHSMM SOLE FITTING MACHINE Filed March 7, 1953 ll Sheets-Sheet 5 Sept 24, W35. F. E. BERTRAND,

SOLE FITTING MACHINE Filed March '7, 1953 ll Sheets-Sheet 6 p F. E. BERTRAND SOLE FITTING MACH [NE ll Sheets-Sheet 7 Filed March '7, 1933 QN F. E. BERTRAND SOLE FITTING MACHINE Filed March '7, 1953 ll Sheets-Sheet 8 Sepit; 24, 11935. F. E. BERTRAND zmmm SOLE FITTING MACHINE Filed March 7, 1935 ll Sheets-Sheet 9 Sepil. 24%, W35. F. E. BERTRAND g fl SOLE FITTING MACHINE Filed March 7, 1955 ll Sheets$heet l0 P i935- F. E. BERTRAND SOLE FITTING MACHINE Filed March '7, 1935 ll Sheets-Sheet ll Patented Sept. 24, 1935 UNITED STATES PATENT QFFICE SOLE FITTING MACHINE Application March 7, 1933, SerialNo. 659,940

96 Claims.

This invention relates to improvements in sole fitting machines and is herein illustrated as embodied in a channeling machine which is particularly adapted for operating upon insoles for welt shoes and upon soles for turn shoes.

In United States Letters Patent Nos. 1,623,225 and 1,623,226, both granted April 5, 1927, upon applications of H. A. Ballard, and in United States Letters Patent No. 1,658,347, granted February '7,

7 1928, upon application of W. C. Meyer, there are disclosed channeling machines in which the work is fed while the cutting means is operating and an additional feed movement is imparted to the work while the cutting means is inoperative to cut the work.

It is one object of the present invention to provide further improvements in sole fitting machines of the general type of the channeling machine above referred to for the purpose of rendering them more efiicient and reliable in operation.

With this object in view, one feature of the present invention consists in the provision, in a sole fitting machine, of a feed device movable about an axis intersecting the plane of the sole and located at one side of the line of feed of the sole and arranged to feed upon its forward stroke, and an oscillatory knife movable about an axis intersecting the plane of the sole and located at the opposite side of the line of feed and adapted to cut with a drawing action on its backward stroke during the forward movement of said feed device. The above-mentioned drawing action of the knife is due partly to the oscillatory movement of the knife which results in drawing the knife slightly in a direction transverse to the line of work food while the knife is moving in the general direction of the line of feed and is to be distinguished from a straight cutting action such as would be produced by a knife having a straight line reciprocating movement in the line of feed of the work. In other words, the drawing action of the knife results from the fact that there is some relative movement between the knife and the work in the direction of the length of the cutting edge of the knife while the knife is cutting.

As embodied in the illustrated machine the sole feeding means comprises an oscillatory feed device or feed dog which operates to feed the sole over a freely rotatable work supporting table and which, like the knife, is movable about an axis intersecting the plane of the sole but which is located at the opposite side of the line of feed from the axis of oscillation of the knife. As a result of the employment of such as oscillatory feed device the amount of relative movement be- I tween the knife and the work lengthwise of the knife edge or, in other words, the amount of drawing action of the knife, is increased, thus making it still easier to cut and feed the work since the 5 knife will offer only a minimum amount of resistance to the advance of the work. The move ment of the oscillating knives simultaneously in opposite directions causes the inner knife at the end of each backward cutting stroke to be located in advance of the outer knife, i. e., nearer to the operator than the outer. With the knives thus relatively positioned the knives will offer little if any resistance to the turning of the work inasmuch as the work in turning will pivot about the tip of the outer knife so that the between substance will be caused to swing away from the inner knife. In other words, swinging of the sole establishes clearance between the between substance and the heel of the inner knife and there 20, is no crowding of the insole material against either knife. Moreover, as in the machine disclosed in Letters Patent No. 1,623,225, hereinbefore referred to, the machine herein illustrated is provided with two knives, one for forming an inner end and the other for forming an outer channel in the sole, the knives cutting upon their backward strokes and moving simultaneously in opposite directions so as to cut in alternation and thus to divide the cutting strain and distribute it evenly over the entire period of operation upon the work. Two feed devices or feed dogs are also provided in the illustrated machine, one of which is constrained to oscillate in unison with the inner knife and the other of which is constrained to oscillate in unison with the outer knife, each feed dog being adapted to feed upon its forward stroke. The feed dogs of the illustrated machine, accordingly, move simultaneously in opposite directions, the length of stroke of each feed dog being equal to that of the knives so that each channel is produced by successive cuts the length of each of which is equal to the length of the knife stroke plus the length of the feed stroke, as in the case of the machine of the above-mentioned Ballard Patent No. 1.623.225.

In the use of sole fitting or channeling machines, as well understood by those skilled in the art, it is necessary for the operator manually and rapidly to turn or swing the sole approximately 180 in its own plane as the toe of the sole reaches the cutting means, in order that the cutting shall proceed properly around the toe, this manual turning being referred to by the operator as swinging the sole at the toe.

1 form width by the outer knife.

In order to facilitate this operation of swinging the sole at the toe, channeling machines have been provided heretofore with manually operable means for varying the rate of work feed while the machine is running, whereby the operator is enabled to slow down the speed of the sole during operations around the toe. In order further to facilitate proper swinging of the sole at the toe, another feature of the present invention comprises the provision, in a sole fitting machine having an inner knife and an outer knife for cutting respectively an inner and an outer channel in a sole, of means for relatively moving the knives to facilitate cutting of the work, and means operable while the machine is running for relatively adjusting the knives to vary their relative positions in the line of feed of the sole in a manner tending to allow greater freedom of movement of the sole, thereby to prevent overcutting of the inner knife and toinsure the production of a margin or feather of uni- In the embodiment of the invention herein illustrated, this result is accomplished by shifting the range of movement of the inner knife in the direction of work feed and by shifting the range of movement of the outer knife in a direction opposite to that of the work feed. Thus, at the end of each knife stroke during the momentary pause in the feed of the work, the outer or edge knife and the chamfering knife and the edge gage (which move back and forth in unison with the edge knife) will be located in advance of the inner knife, i. e., in a position nearer to an operator facing the machine. The positions of the knives and the edge gage will then be most favorable to the swinging of the sole since the tip of the toe will not then be crowded against the chamfer knife and the edge gage and there will be no danger that the edge knife will cut into that portion of the sole which should constitute the between substance.

It will be observed from the foregoing that the illustrated machine has an inner knife and an outer knife and means for moving said knives to cause them to make, respectively, an inner and an outer marginal cut in a sole as the margin of the sole is fed past said knives; that these knives are relatively adjustable lengthwise of the direction of feed of the sole margin; and that means is provided for effecting such relative adjustment of the knives while the knives are moving. This organization constitutes another feature of the invention.

Other features of the invention relate to the provision of improved means for supporting the extreme edge portion of a sole in the locality which is being operated upon, this means, as illustrated, comprising an auxiliary work support which is mounted to oscillate about the axis of the rotary work table; to improved means for moving the edge gage in synchronism with the movements of the channeling knives tofacilitate the feeding of the sole in a manner tending automatically to turn the sole as required to present all portions of its curved margin properly to the action of the knives; to improved means, illustrated as slashing knives carried by the feed dogs, for cutting into the surface at the grain side of a sole in a manner to facilitate the raising of the channel lips of insoles for welt shoes or, in the case of soles which are to be attached to shoes by means of adhesive, to prepare such soles for the reception of the adhesive; and to improvements in the driving mechanism and general organization of the machine as a result of which a machine has been produced which will run with umtsual smoothness and quietness at high speed and in which vibration and wear has been reduced to a minimum, these results being obtained in the illustrated machine partly by the entire elimination of cam motions in the driving mechanism, the operative movements of the cutting and feeding instrumentalities being derived, as herein shown, from two eccentrics carried by a single vertically disposed main shaft.

The invention further resides in features of construction and combinations and arrangements of parts hereinafter described and claimed, the advantages of which will be apparent to those skilled in the art from the following description.

The invention will be described with reference to the accompanying drawings, in which Fig. 1 is an elevational view, partially broken away, of the left-hand side of a channeling machine embodying the present invention in what is now believed to be its preferred form;

Fig. 2 is a sectional view, on an enlarged scale, taken along the line II-II of Fig. 1;

Fig. 3 is an elevational view, on an enlarged scale, of the left-hand side of the head of the machine;

Fig. 4 is a side elevational view of a portion of the mechanism for raising and lowering the work table, showing the parts in different operative positions from those shown in Fig. 3;

Fig. 5 is a top plan View of the head of the machine;

Fig 6 is a view, in front elevation, of the head of the machine;

Fig. 7 is a vertical sectional view taken substantially along the line VII-V11 of Fig. 5;

Fig. 8 is an elevational View of the right-hand side of the head of the machine;

Fig. 9 is a sectional view taken along the line IX-IX of Fig. 6;

Fig. 10 is a perspective view of the head of the machine, showing the machine in operation upon an. insole for a welt shoe;

Fig. 11 is a horizontal sectional view taken along the line X[ XI of Fig. 6;

Fig. 12 is a top plan view, on an enlarged scale, showing particularly the edge gage and the chamfer knife;

Fig. 13 is a detailed view, partially in section along the line XIIIXIII of Fig. 7

Fig. 14 is a view similar to Fig. 11 but showing a different adjustment of the feed mechanism;

Fig. 15 is a plan view of the knives and the edge gage showing the knives in operation upon a sole and illustrating the relative positions of these parts just prior to the swinging of the sole for the purpose of rounding the toe;

Fig. 16 is a plan View, on an enlarged scale, of the channel and lip knives illustrating the relative movements of these knives;

Fig. 17 is a vertical sectional view taken along the line XVII-XVII of Fig. 11;

Fig. 18 is a front elevational view of the knives and the feed dogs, together with the carriers therefor and illustrating these parts in operation upon an insole;

Fig. 19 is a horizontal sectional view taken along the line XlX-XIX of Fig. 18;

Fig. 20 is an elevational view of the right-hand side of the channeling knife slide, showing the channeling knife and its presser foot and showing also the associated feed dog and a portion of the slide which carries it;

Fig. 21 is an elevational view of the left-hand side of the edge knife slide, showing the edge knife and its presser foot and showing also the associated feed dog and a portion of the slide upon which it is mounted;

5 I Fig. 22 is a front elevational view of the channel knife, the edge knife and the lip trimming knife, illustrating their mode of operation upon the work;

Fig. 23 is a left-hand side elevation of the lip and trimming knives shown in Fig. 22;

Fig. 24 is a fragmentary View in front elevation showing particularly the feed dogs and the knives in operation upon an insole;

Fig. 24a is a view showing a modified form of 15. the feed dogs;

Fig. 25 is a sectional view taken substantially along the line XXV-XXV of Fig. 24;

Fig. 26 is a view similar to Fig. 18 but showing the machine fitted for operation upon a sole for a turn shoe;

Fig. 27 is a side elevational view;

Fig. 28 is a sectional view of a portion of an Economy insole as it appears after having been operated upon by the machine;

' Fig. 29 is a view similar to Fig. 24 but illustrating the use of lip-slashing knives upon the feed do s;

Fig. 30 is a view showing the channel and edge knives employed when the machine is fitted for 30 turn work and illustrating the mode of operation of these knives upon a sole;

Fig. 31 is a sectional view of a portion of a sole for a turn shoe; and

Fig. 32 is a cross-sectional view illustrating par- 35 ticularly the relative positions of the knives and the feed dogs when the knife carriers are in midstroke positions.

The machine shown in the drawings comprises a freely rotatable flat work table or support it, a

channeling knife $2 for cutting downwardly into the surface of a sole S on the work table to form a channel and an inner lip, an edge knife M for slitting the edge of the sole to form an outer lip and a feather, presser gages it and 48 (Figs. 20

and 21) associated with the knives s2 and M, re-

spectively, for gaging the thickness of the inner and outer lips, two four-motion feed dogs 5B and 5?. for feeding the work, and an edge gage 5 for determining the width of the feather and the position of the lips relatively to the sole edge. For convenience of description the expression channeling knife will be employed hereinafter to designate selectively the channeling knife 42 and the edge slitting knife 54. The illustrated machine,asnttedfor channeling insoles for welt shoes may be provided, in addition to the above-mentioned channeling knives, with a dividing knife 58 (Figs. 22 and 23) for cutting, in the sole face, a

vertical slit intersecting the edge slit and thus forming an outer lip which is narrower than the feather. The illustrated machine is also provided with a charnfering knife it (Fig. 12) for chamfering or beveling the marginal edge at the lower or grain side of the sole for a purpose well known in the art. The illustrated machine is adapted for use in making soles for turn shoes, as well as for welt shoes, and for that purpose certain operative parts of the machine are interchangeable with corresponding parts of a modified construction adapted particularly for turn work.

The channeling knives 412 and M are moved back and forth in the line of work feed and are arranged to out on their backward strokes, the knives mov ing simultaneously in opposite directions so as to 75,: cut in alteration and thus to divide the cutting strain and distribute it evenly over the entire period of operation upon the work. The feed dogs 5!] and 52 move back and forth in the line of feed in unison with the movement of the knives t2 and M respectively, the feed dog 5t advancing 5:5 the work while the edge knife M is moving backwardly to cut the work and while the channel knife 62 is moving idly forward with the work, and the feed dog 52 advancing the work while the channeling knife 42 is moving backwardly to cut the work and while the edge knife 44 is moving idly forward with the work, this arrangement insuring that the length of the cut made by each knife will be equal to the distance traveled by that knife plus the distance traveled by the work during the cutting operation.

The back-and-forth movements are imparted to the knives and the feed dogs by mechanism comprising two carriers 62 and M (Fig. 11) which are mounted to oscillate about vertical axes lo- 2 cated at opposite sides of the line of work feed, the carriers being connected to swing simultaneously in opposite directions and being moved by a two-ar1n lever 55 which is oscillated by means of an eccentric 68 on a vertical driving shaft iii. 2.5.

The feed dogs 56 and 52 are raised and lowered relatively to the carriers 62 and fi l while the carriers are being oscillated by means of mechanism actuated by a second eccentric E2 on the shaft W. The shaft 13 is journaled in bearings in a frame 30 comprising a head i upon which the operating parts of the machine are mounted, a hollow standard it which supports the head M, and a base '28 upon which is mounted a motor iii]. that is connected to drive the shaft iii and is covered by 35 means of a hood 82. The operation of the motor is controlled by a suitable switch M and rheostat 66.

As a result of the oscillatory movement of the feed dogs 5i and 52 derived from the oscillatory 40 carriers and 64, combined with the up-anddown movements of the feed dogs derived from the eccentric if, each feed dog has a four-way motion enabling it to operate intermittently on the work. The feed dog 52, for example, after 45 being lowered into engagement with a sole on the table id is moved forwardly by means of the carrier M to advance the sole one step, while the inner knife 32 is moved backwardly a like amount to make a short out which is to form part of an 50 inner channel in the sole. The feed dog then rises to release the work and is moved idly toward its starting position by the backward stroke of the carrier 66, while the inner knife 52 is moved idly forward by the forward stroke of the carrier 55 52. During this forward or non-cutting stroke of the inner knife it the feed dog 5E which is mounted on the same oscillatory carrier as the knife d2 imparts another feed movement to the sole, advancing the sole in unison with the forward 50 movement of the inner knife so that when that knife is again ready to cut the relation of its cutting edge to the work will be the same as at the end of the preceding cutting stroke or, in other words, it will still be located at the forward 65 extremity of the cut. Thus, the knife can again out throughout the entire length of its stroke while the work is being fed in the opposite direction by the fed dog 52 a distance equal to the length of the stroke of the knife. The feed dog 7 52 may therefore be considered to be a main feeding means and the feed dog as to be an auxiliary feeding means so far as the operation of the inner channeling knife 42 is concerned. Considering the operation of the feed dogs with reference to the outer knife 44, the feed dog 50 functions as a main feeding means to advance the sole during the backward cutting stroke of the outer knife 44, while the feed dog 52 functions as an auxiliary feeding means to advance the sole during the idle forward stroke of the outer knife. Inasmuch as the back-and-forth movements of the two carriers 62 and 64 are equal, the length of the movements imparted to the work by the feed dogs 50 and 52 is the same as the length of the cutting strokes of the knives. As a result of this arrangement and by reason of the auxiliary feed movements above described, the present machine is enabled at each successive cutting operation to produce a out which is approximately twice the length of the knife stroke and which is approximately twice as long as the distance traveled by the work while that cut is being made. Moreover, inasmuch as successive cuts are made at opposite sides of the line of work feed, one cut being in the inner channel and the next out being in the outer channel, the cutting strain is divided and distributed evenly throughout the entire period of operation upon the work. In addition, the draw cutting action of the knives resulting from the oscillatory movements of the carriers 62 and 64 makes it easier for the knives to cut and consequently less power is required to feed the sole against the knives and cleaner cuts will be produced.

The driving connections between the motor 86 and the shaft 10 comprise a horizontal shaft 93 (Figs. 1 and 2) which is arranged in end-to-end relation to the motor shaft 92 and is connected with the latter by a coupling 94 and has secured thereto a gear 95; a pinion 98 which is secured upon a horizontal shaft I08 and is driven by the gear 96; a gear I02 which is secured to the shaft I00 and drives a pinion Hi4 (Fig. 2) that is fast upon a horizontal shaft I06; and a gear I 98 which is secured upon the shaft I65 and drives a gear III! that is secured to the shaft 18 by means of a key II 2, as best shown in Fig. 2. The shafts 99, I III] and I06 are journaled in bearings formed in the walls of a casing II4 which encloses and protects the driving gear. The casing II S, together with the enclosed driving gearing, is mounted with provision for vertical setting up adjustment relatively to the main shaft 16 for the purpose of bringing the shaft 99 into alinement with the motor shaft 92. To this end, the casing II; is supported upon a hollow post I I 6 the lower end of which is secured, by means of a clamp screw IIS, within a split sleeve IZt formed in the bottom of the pedestal 15. When the clamp screw H8 is loosened to permit vertical adjustment of the casing I I4 with the enclosed gearing, the weight of the casing is borne by means of a screw I22 which is threaded in the bottom of the pedestal 1G and is adapted to be turned by a wrench to effect a fine adjustment of the elevation of the casing II 4 and the driving gearing.

The main shaft 19 is journaled at its upper portion within ball bearings I 24 (Fig. '7) mounted in the head 14 and at its lower portion within ball bearings I26 (Fig. 2) mounted with in the adjustable gear casing II 1, while the weight of the shaft 10 is supported by means of a thrust bearing I28 (Fig. '7) which is supported within the head 14. The gear I I 0 has formed integrally therewith a sleeve I30 which extends upwardly within a bearing I32 in the gear casing I I4 and is formed with an internal diameter somewhat greater than the diameter of the shaft 10 to prevent cramping of the shaft due to any inaccuracy in alinement of the shaft bearings and insure that the shaft will turn freely. The upper end of the sleeve I 30 extends beyond the shaft bearing and has fixed thereto a collar I38 which engages the top of the casing I I4. A thrust bearing I46 is provided between the gear H0 and the lower end of the bearing I32. A hand wheel I42 on the main shaft 1!] enables the machine to be conveniently turned over by hand when it is desired.

The oscillatory carriers 52 and 64 upon which the channeling knives and the feed dogs are mounted each comprise two vertically spaced arms WI] and I52 (Fig. 7) which extend from the top and bottom, respectively, of each carrier. The carrier arms I58 and I52 are fixedly secured to the upper and lower ends, respectively, of two vertical rockshafts I56 and I 53 (Figs. 11 and 17) the middle portions of which are journaled in bearings I66 and E52 formed in the head 14. As best shown in Figs. 10 and 11, the two carriers 62 and G4 are constrained to oscillate simultaneously in opposite directions by means comprising a link I 66 the opposite ends of which are connected to rearwardly extending arms I68 on the carriers 62 and 54, and a link I 19 which connects the arm I63 of the carrier 64 with one arm of the eccentric-operated two-arm lever 66. The two-arm lever 65 has formed integrally therewith a depending stud I12 which is mounted to turn in a vertical bearing in the head 14. The forwardly extending arm of the lever 66 is forked, as best shown in 11, to receive a slide block I14 through which the eccentric 12 extends. The rearwardly extending arm of the lever 66 is slotted, as indicated at I16, to receive a roll I18 carricd by one end of the link I10. As shown, the outer portion of the slot I18 is curved about the pivotal connection of the link I 10 with the carrier arm I68 as a center, while the inner portion of the slot I16 is curved in an arc eccentric to the pivotal connection above referred to. Through the above-described connections, not only may the carriers 82 and 54 be oscillated simultaneously in opposite directions, as hereinbefore set forth, but by shifting the link I10, by means of operator-controlled connections comprising a link I 80 and other means hereinafter to be described, the roll I18 may be moved inwardly or outwardly in the slot I16 to vary the amplitude of the oscillations imparted to the carriers 62 and 64. I16 is extended inwardly sufficiently to enable the roll 13 to be adjusted into coaxial relation with the axis of oscillation of the lever 66 and thereby to render the movement of that lever ineffective to oscillate the carriers 62 and 64 so that no cutting movement will be imparted to either of the knives and no feeding movement will be imparted to either of the feed dogs. The above construction enables the feed strokes of the feed dogs to be shortened to facilitate feeding of a sole during operations around the toe and even to be nullified if it should be desired to stop the feed of the work at any time without stopping the machine. The curvature of the eccentric inner portion of the slot I16 is such that after the feed stroke has been shortened a predetermined amount by shifting the roll I18 to the inner end of the concentric part of the slot I16, further inward movement of the roll I18 will result, not only in further shortening of the length of the feed stroke, but also in relatively displacing the ranges of movement of the inner and outer knives a manner to facilitate the swinging of the sole at the toe, as will be more fully explained hereinafter.

The slot 0 The inner channeling knife 42 and the presser gage 46 associated therewith are mounted upon a slide I86 (Fig. 1'7) which is capable of yielding vertically in the oscillatory carrier 62. The outer channeling knife 44 and its presser gage 48 are mounted upon a slide I88 arranged for vertical yielding movement in the carrier 64. The depth to which the inner channeling knife is permitted to penetrate the work and the location of the cut produced by the outer channeling knife relatively to the upper surface of the work are determined by the presser gages 46 and 48, respectively, in a customary manner.

The inner or channeling knife 42 comprises a rectangular, vertically disposed shank portion I92 (Fig. 17) having formed at its lower extremity a cutting edge I92 adapted to cut inwardly from the face of a sole to form an inner channel A and a channel lip B in a sole such as the sole shown at C in various figures of the drawings. At its upper end the shank portion of the channeling knife 42 is rigidly secured by means of a screw I94 within a groove I96 in a knife block I98. The knife block I58 is mounted with provision for horizontal sliding adjustment transversely with respect to the direction of work feed within a groove 200 in a carrier 202 by means of a bolt 204 which extends through a horizontally elongated slot 206 (Fig. 1'7) in the carrier 222 and is threaded into the knife block I98. The knife block 292 is' rigidly secured to the lower portion of the channeling knife slide I86 by means of a bolt 208 which extends through a vertically elongated slot 2H1 in the carrier 222. The presser gage 46, associated with the channeling knife 42,

is formed upon a carrier plate 2 i 2' (Fig. 18) which is fixedly secured to the front of the channeling knife slide I86 by means of a screw 2M. The channeling knife 42 may be adjusted vertically relatively to the presser gage to vary the depth of its out in the work by loosening the bolt 228 and adjusting the channeling knife block carrier 2B2 vertically upon the slide Iiifi. For the purpose of securing a fine adjustment of the depth of cut produced. by the channeling knife, an adjustment screw 2H5 is provided, the screw having a shank portion threaded into the channeling knife block carrier 202, and a knurled head which engages within a notch 2w (Fig. 20) in the back of the knife slide I86. A binding screw 22B is provided for locking the screw 2N5 in adjusted position.

The knife slide I86 is mounted for vertical sliding movement within a slideway 222 (see also Fig. 14) in the oscillatory carrier 62. The slide 186 is adapted to yield upwardly against the action of the coiled spring 224 which is housed within a bore in the upper portion of the slide, the upper end of the spring bearing against a follower 225 which is engaged by a screw 222 that is threaded through a bracket 232 secured to the oscillatory carrier 62. Downward movement of the knife slide I88 under the influence of the spring 224 is limited by engagement of stop lugs 232 (Figs. '7 and 18) with shoulders 234 on the carrier 62. The stop lugs 232 are formed at opposite extremities of a crossbar 236 which is secured to the slide I86. The stop lugs 232 serve to prevent the knife 42 from engaging the surface of the work table 42 when the work is removed from beneath the presser gages. The tension of the spring 224 may be varied by adjustment of the screw 228. A suitable check nut 238 on the screw 228 serves to lock the latter in adjusted position. The slide I86 is retained within its slideway 222 by means of a casting 240 (Figs. 9, I l and 17) which is secured to the carrier by screws 242, and within which is formed a vertical guideway for a slide, hereinafter referred to, which carries the feed dog 52. 5

The outer or edge knife 44 has a horizontally disposed cutting edge 2% (Figs. 22 and 23) for slitting the edge of an insole, such as an insole for a welt shoe, to form an outer slit or channel D, an outer channel lip E and a feather F. As 130 best shown in Figs. 17, 19 and 21 to 23, the shank portion of the edge knife 44 rests upon the bottom of a recess 248 in a knife holder 258 with one lateral edge portion engaging an undercut shoulder 252 on the holder 25%) and the opposite 1'5 lateral edge of the edge knife shank being engaged by the inner ends of two screws 254 which are tightened to clamp the knife in the holder. As shown, the bottom of the recess 248 is inclined to the horizontal to afford the desired 20.

rake or clearance for the knife. Because of the shortness of the strokes of the knives more rake may thus be provided for the edge knife than is usually practicable without causing the knife to have any undue tendency to dig in. For the 25:

same reason the inner channeling knife 42 may be backed off more than is customarily considered practicable without causing that knife to dig in. By loosening the clamp screws 254 the edge knife may be readily adjusted lengthwise of its cutting edge to vary the width of the edge slit. The edge knife holder 252 is formed with an upstanding portion 258 having flanges 258 which engage opposite sides of the edge knife slide 88 and the knife holder 252 is rigidly secured to the slide I82 by means of a screw 2%, the latter extending through a vertically elongated slot 262 in the knife holder 252 so as to permit vertical adjustment of the knife holder relatively to the slide I88 for the purpose of varying the thickness of the edge lip and feather. For the purpose of effecting a fine vertical adjustment of the edge knife relatively to its presser gage, an adjusting screw 264 is threaded through the upper portion of the knife holder 250, the screw having a knurled head which engages within a notch 26% in the knife slide H88 and the screw 264 being retained in adjusted position by means of a binding screw 268.

The edge knife slide 588 is mounted for vertical movement within a slideway 212 in the oscillatory edge knife carrier (54 in a manner similar to that in which the channel knife slide 26 is mounted in the channel knife carrier 62.

As shown, the edge knife slide use is adapted to which may be turned to vary the tension of the 4 spring, the latter being threaded through a bracket 228 on the carrier 54 and being provided with a lock nut 282. Downward movement of the edge knife slide I82 under the influence of the spring 2'I2 is limited by engagement of stop lugs 282 carried by the slide I88 with shoulders 284 formed upon the carrier 64. The stop lugs 282 are formed at the opposite extremities of a crossbar 236 which is secured to the slide I88 and they serve to prevent the edge knife 44 from engaging the surface of the work table when the work is removed from the machine. The edge knife slide I38 is retained within its slideway 210 by means of a casting 288 (Figs. 9, 14. and 1'?) which is secured to the carrier 64 by screws 289 and within which is formed a vertical guideway for a slide, hereinafter referred to, which carries the feed dog 52.

It is sometimes desirable, for example, in the manufacture of so-called Economy insoles, to form an outer lip which is narrower than the feather. For this purpose the dividing knife 58 is employed to slit the face of the sole along a line parallel to the sole edge and to cooperate with the edge knife in forming the narrow lip E by severing a chip G from the margin of the sole. In order to facilitate the passage of the dividing knife 58 and the edge knife 44 through the work and thus to insure the making of cleaner cuts by each of said knives the dividing knife is arranged to cut at a point substantially in advance of the edge knife. This relative arrangement of the dividing knife and the edge knife have been found to be particularly advantageous in cutting manufactured insoles composed of stock containing latex or similar material which is less easily cut than leather. It has also been found that by slitting downwardly from the face of the sole at a point in advance of the cutting edge of the edge knife it is easier to swing the sole when operating around the toe. The illustrated dividing knife (Figs. 22 and 23) is formed with a cutting edge 290 and with an upwardly extending shank portion which is rigidly secured by means of a screw 292 to a block 294 having a dovetailed connection with a lug 296 on the side of the edge knife holder 250. As shown, the shank of the dividing knife 58 is received in a shallow recess in the block 294, the recess having edge walls 295 which are inclined so as to position the dividing knife with its cutting edge 298 sloping upwardly and rearwardly from its lowermost or operative extremity thereby further facilitating clean cutting by causing the knife to cut with a drawing action. The screw 292 extends through a slot 298 in the block 294, the slot being extended in a direction parallel to the cutting edge of the dividing knife. The construction and mounting of the dividing knife is therefore such that after the cutting edge of the knife has been resharpened and the lower extremity of the knife has been ground back so as to shorten the knife somewhat, the lead of the dividing knife over the edge knife may be maintained by adjustment of the knife in the direction of the length of its cutting edge. The dividing knife block 294 is secured to the lug 296 by means of a thumb screw 300 which is threaded into the block and extends through a horizontal slot 302 in the lug 296. This arrangement permits adjustment of the dividing knife in a direction lengthwise of the cutting edge of the edge knife to vary the width of the outer lip E.

The edge knife presser gage 48 is rigidly secured by a screw 385 to an auxiliary slide 335 which is mounted within a vertical slideway 338 in the edge knife slide I88, and provision is made whereby the auxiliary slide 3596 may be fixedly secured to the main slide I88 to adapt the machine for operating upon insoles for welt shoes and may be disconnected from the main slide so that it will be capable of moving independently thereof to adapt the machine for operating upon soles for turn shoes. As shown, the auxiliary slide 306 is bored, as shown at 399 in Fig. 26, to receive a coiled spring 3ID the upper end of which bears against a shoulder 3| 2 on the edge knife slide I88, and a pin 3I4 carried by the auxiliary slide 396 is adapted to cooperate with the ends of a slot 3I6 in the edge knife carrier 64 to limit the upward and downward movement of the auxiliary slide. A screw 3I8 (Fig. 24) threaded through the carrier 64 is adapted to engage within an aperture 320 (Fig. 26) in the auxiliary slide 308 for the purpose of fixedly connecting the auxiliary slide to the main slide I88. By removing the screw SIS, or turning it sufficiently to Withdraw its extremity from the aperture 320, the auxiliary slide may be released from the main slide so that it can yield vertically independently of the latter.

When operating upon welt work it is essential to insure that the outer lip shall be maintained of uniform thickness irrespective of any variation in the thickness of the sole. By utilizing the screw 3I8 fixedly to secure the auxiliary slide 396 to the edge knife slide I38 the presser gage 43 and the edge knife 44 will be connected for yielding movement in unison. Consequently, the edge knife will rise or fall with the presser gage in response to variation in work thickness so as to maintain uniformity in the thickness of the lip. In turn work, on the other hand, it is essential that the thickness of the feather shall be maintained uniform regardless of variation in the sole thickness. This result will be insured by removing or loosening the screw 3I8, thereby enabling the spring 3E0 to hold the edge knife at the level determined by engagement of the pin 3I4 with the bottom of the slot 3I6 and adapting the presser gage 48 (which is carried by the auxiliary slide 305) to yield upwardly in response to the variation in work thickness without carrying the edge knife with it. Thus, the edge knife will be maintained at a fixed level relatively to the surface of the work table so as to insure uniformity in the thickness of the feather.

As shown in Fig. 17 the feed dogs 53 and 52 are carried by slides 324 (each comprising an inner spindle 336 and an outer sleeve 338) and the slides 324 are guided for up-and-down movements within slideways formed in the castings 248 and 288 which serve also to retain the knife carrier slides within their respective guideways in the oscillating knife carriers 62 and 84. Each feed dog is formed with a toothed lower surface for engagement with the work and with an upwardly extending shank portion which is secured to a feed dog holder 326 by means of a screw 328 which extends through a vertically elongated slot 330 in the holder 326 and is threaded into the shank of the feed dog, the slot permitting vertical adjustment of the feed dog relatively to its holder. Each feed dog is prevented from turning about its attaching screw 328 as a pivot by 5 means of flanges 332 formed on the holders 326 between which the shanks of the feed dogs extend. The upper ends of the feed dog shanks bear against the heads of screws 233 (Figs. 20 and 21) which are threaded into the holders 326 0 and serve to receive the thrust on the feed dogs when the latter are pressed downwardly against the work. The screws 233 may be turned by means of their knurled heads to assist in adjusting the feed dogs vertically with respect to 5 their holders to vary their action upon the work. As shown in Fig. 29, the feed dogs may carry knives 334 having horizontal cutting edges which not only assist in feeding the work but constitute means for cutting into the upper surface of the sole at right angles to the sole edge to form incisions or slits H (Figs. 29 and 30) in advance of the channeling knives, the incisions being formed to such a depth that, when the lips or flaps have been formed by the channeling knives,

they will be divided 'o r'sl i't transversely as shown in Fig. 30 so that they may be more easily raised to form the sewing rib. Such slitting of the channel lips is particularly advantageous where the lips are'to be raised into positions substantially normal to the face of the sole as in so-called Economy insoles of the type shown in Fig. 28. The slitting knives 334, of course, serve also as means for feeding the work and the adjacent work-engaging faces of the feed dogs may be toothed, as shown at 5i on the feed dog 56 in Fig. 29, or they may be smooth, as shown at film on the feed dog 52a: in Fig. 24m, in which latter case the slitting knives alone will be relied upon to secure feeding engagement between the feed dogs and the work and the smooth lower faces 5M: of the feed dogs will function to limit the depth to which the slitting knives are permitted. to penetrate the work.

The feed dogs Eli and 52, being mounted upon the oscillatory carriers 62 and 66 upon which the channeling knives are also mounted, are moved in arcuate paths corresponding to the paths of movement of the knives. The inside feed dog 5, being movable about an axis located. at the left of the line of work feed, moves in a counterclockwise direction, viewed from above, during its feeding stroke and consequently tends to turnthe sole avery slight amount in a counterclockwise direction. Inasmuch as it is necessary for the sole to be turned in a counterclockwise'direction as it is being fed in order that the edge of the sole shall be held against the edgegage, it will be seen that the movement of the inside feed dog actually tends to maintain the edge oi the sole in contact with the edge gage. The outside feed dog 52 moves in a clockwise direction during its fee-ding stroke but it nevertheless tends to swing the sole in a counterclockwise direction since it tends to cause the sole to pivot about the point of the inside channel knife. The edge gage, which oscillates about the axis or the work table, also has some tendency, during its forward stroke, to assist in turning the sole counterclockwise, the tendency being made more effective as a result of the fact, hereinafter more fully explained, that the axis of the work table is offset rearwardly relatively to the axes of oscillation of the knife carriers 82 and 64. Thus, both feed dogs impart to the sole a distinct tendency to turn in a counterclockwise direction so that, except at the toe or other sharply curved portions of the sole margin, it is often unnecessary for the operator manually to guide the sole in order to hold it against the edge gage.

The feed dog holders 326 are formed integral- 1y with the lower ends of the spindles 335, the upper reduced portions of which are arranged to telescope within sleeves 338 which, together with the spindles, constitute the feed dog slides. Each sleeve 33B is formed with a counterbored recess'for receiving a coiled spring 348 which-encircles the respective spindle 336, the

1 lower end of the spring engaging a washer 342 sea ed against the'shoulder on the spindle, while the upper end of the spring is seated against the top of the counterbored recess in the sleeve.

, Theforce of the spring 3&8 tends to urge the spindle downwardly relatively to the sleeve and maintain the spindle with its feed dog in a vertical' position determined by engagement of a erosspin 3M in the spindle with the lower end or a vertical grbov'e346 in the sleeve 338. The genesis adapted to be" compressed by continued downward movement of the sleeve 338 after the feed dog has engaged the work on the table, thus adapting the feed dog, without special adjustment, to accommodate soles of difierent thicknesses and also insuring that the teeth of the feed dogs will embed themselves deeply enough into the work to secure positive feeding engagement therewith. The feed member of each feed dog slide is provided at its upper end with an upstanding ear 3&8 which is connected by a balland-socket joint 3 39 with the lower end of a link 3% the upper portion of which is connected by a ball-and-socket joint 352 with a rocker member 354 which is fixedly secured to a horizontal stud 3%. The opposite ends of the stud are fixedly secured within two uprights 358 that are bolted to the head M. The ball- andsocket joints 349 and 352 permit the links 350 to accommodate both the vertical swinging movemerits of the rocker member 3% and the horizontal oscillatory movements of the channeling knife carriers @32 and M. The above-described arrangement of an eccentric-operated actuator, indirectly connected by means of the links 35%! with the feed dog slides, provides for a substantial pause or dwell between successive feed movements imparted to the work and allows ample time, between the feed impulses, for manual swinging of the sole. On the other hand, while the feeding mechanism is intermittent in its action, the work is advanced faster than in most continuous feed machines because of the high speed at which it is practical to run the machine.

The above-described construction is such that as the rocker member 354 is oscillated, up-anddown movements will be imparted to the feed dog slides 32% through the links 358. The rocker member 354 is actuated from the eccentric 12 through connections comprising a stop motion mechanism 368, and including an actuator 362; the stop motion mechanism operating to disconnect the feed dogs from the mechanism which moves them up and down, in case the work should be removed from beneath the feed dogs at any time while the machine is running, and the work table is occupying its elevated position. This is to insure that the feed dogs will not be caused to strike against the table thereby injuring the table and causing unnecessary noise and vibration. The stop motion mechanism also acts to nullify the up-and-down movements of the feed dogs when the work table is lowered to insure against engagement of the feed dogs with the table in case the latter should be raised into operative position without having a sole thereon. The'eccentric-operated actuator 3%, from which the up-and-down movements of the feed dogs. are derived, is locate-d in front of the rocker member 35% and is mounted upon the fixed pivot stud i556 and it is adapted to be oscillated continuousiy while the machine is running by means of the eccentric '52 through connections comprising a rod 366 having a ball and socket joint connection 3% with the actuator and pivotally connected at 36 with an eccentric sleeve 368 on the eccentric E2. The actuator 362 is adapted to be maintained in operative connection with the rocker member 35 2 so long as the work is located upon the work table in position to be operated upon and to be disconnected from the rocker member so as to nullify the up-and-down movements of the feed dogs whenever the work is-removed from beneath the presser gages 46 and 38.

The means for connecting the actuator 362 with the rocker member 354 comprises a finger 310 which is pivoted at 312 to the rocker member and which carries a coupling stud 314 which is adapted to enter a notch 316 in the actuator. A spring 311, connected at its upper end to the rocker member 354 and at its lower end to the finger 310, tends to hold the coupling stud 314 in engagement with the notch 316 so that the operative driving connections may be maintained between the actuator 362 and the rocker member 354 so long as work is present beneath the knives. Upon the passage or removal of the work from beneath the knives, however, the driving connections between the actuator 362 and the rocker member 354 are broken by means of a pawl 318 pivoted at 38f. upon the head i4 and adapted to engage a shoulder 382 upon the finger 310, the pawl being acted upon by a spring 384 tending to maintain the pawl in engagement with the shoulder 382. The pawl 318 is adapted to be drawn into position to engage the shoulder 382 and to cause the coupling stud 314 to be withdrawn from the notch 316 by connections with the channeling .knife slide I86, comprising a rod 386 which is slidably mounted within a central bore in the vertical rockshaft I56, and a bracket 388 which rigidly connects the lower end of the slide rod 386 with the channeling knife slide I86. The upper extremity of the slide rod 336 projects above the rockshaft 56 and engages an extension 390 of the pawl 318. As hereinbefore explained, the channeling knife slide I86 is continuously urged downwardly by the action of the spring 224, the vertical position of the slide and of the channeling knife being determined by the presser gage 46 which rides along the surface of the sole. When the sole rides out from beneath the presser gage 46, or when the work table 48 is lowered, the resulting downward movement of the slide I86 under the action of the spring 224 lowers the rod 386 and permits the spring 384 to raise the pawl 318 into the path of the shoulder 382 upon the finger 310 carried by the oscillating rocker member 354. When, during the movement of the rocker member 354 toward the left, the shoulder 382 is brought into engagement with the pawl 318, the finger 316 will be brought downwardly to disengage the coupling stud 314 from the notch 316 in the actuator 362 to disconnect the latter from the rocker member 354. Upon disconnection of the rocker member 354 from the actuator 362 a spring-pressed plunger 382 mounted in one of the uprights 358 acting upon a flattened surface 394 on the rocker member 354 serves to bring the rocker member into the central or neutral position in which it appears in Fig. 7 and in which position the two feed dog slides will be brought to rest each in a vertical midstroke position, i. e., in a position halfway between the limits of the upand-down movements of the feed dogs. Thus, not only will the feed dogs have no vertical movements imparted to them, but both the feed dogs will be maintained in positions clear of the work table where they will not interfere with the insertion of a new piece of work. When a new piece of work is placed upon the feed table and beneath the presser gages 46 and 48, the upward movement of the channeling knife slide will be communicated, through the rod 386, to the pawl extension 390 and the pawl 318 will be disconnected from the shoulder 382, thus permitting the spring 311 to swing the extension 390 upwardly to engage the coupling stud 314 with the notch 316 and thus to reestablish driving connections between the actuator 362 and the rocker member 354.

In order to prevent the spring-pressed plunger 332 from acting upon the rocker member 354 while the latter is being oscillated and thus unneces- 5 sarily resisting the movement of the rocker member, the plunger 382 is adapted to be latched in retracted position by means of a hook-shaped pawl 396 (Fig. 6) pivoted at 398 to one of the uprights 358, the pawl 396 being adapted to engage a flange 10 460 on the plunger. For the purpose of releasing the pawl 398 from the flan e 400 so that the plunger shall operate to bring the feed dogs into neutral position when no work is present in the machine, the pawl 386 is connected with the extension 396 on the pawl 318 by means of a rod 462 the upper end of which is pivoted at 404 to the pawl 336 and the lower end of which is adapted to slide through a block 488 pivotally connected to the extension 390. Movement of the pawl extension 398 is yieldingly communicated to the rod 482 by means of a spring 488 surrounding the rod 402 between the block 406 and a collar 4| 0 adjustably fixed on the rod 402. All of the abovedescribed mechanism, as well as the operative connections with the eccentrics on the main shaft 18, are covered and protected by means of a removable hood 4 shown in Figs. 1 and 7.

The work table 40 comprises a disk having a central cylindrical stem 4I2 (Fig. '1) which is mounted to turn idly within a vertical bearing sleeve 4I4 which extends through a block 4I6 that supports the table. The work table rests upon ball bearings 4I8 carried by the block 4I6 which permit the table to turn freely as a sole is advanced by the action of the feed dogs 50 and 53 and thus to impose only a minimum amount of frictional resistance to the movement of the sole. The work table supporting block M6 is fixedly secured to a horizontally adjustable carrier 420 which also supports the edge gage 54 and the chamfering knife 60 and which is movable to adjust the edge gage, the chamfering knife and the work table in unison transversely of the direction of work feed and thus to shift the sole edgewise relatively to the channeling knives so as to vary the distance between the channels and the sole edge or, as commonly expressed, to vary the width of the margin.

The edge gage 54 and the chamfering knife 60 are mounted upon an auxiliary work support 422 as best shown in Fig. 12. The auxiliary work support 422, together with the edge gage and the chamfering knife, is oscillated in a horizontal plane about the axis of the work table 40, the forward and backward movements of the gage occurring in unison with the forward and backward strokes of the outer lip knife 44 in order that the edge gage shall be maintained at a uniform distance from that knife as the latter moves 0 back and forth and thus to insure against any undesired variation in the width of the sole margin such as might otherwise occur, for example, at the toe of a more or less pointed toe insole. The edge of the auxiliary oscillating 5 work support 422 which is adjacent to the work table 48 is curved to conform to the curvature of the edge of the table and is arranged close to the edge of the table so that, even though the auxiliary support moves back and forth relatively to the table 40, there will be no gap opened up between these parts but a continuous surface will be afforded at all times for supporting the sole throughout the extent of the region being operated upon. Thus unyielding and adequate support is provided for the marginal chipwhich is cut from the lower face of the insole by the chamfering knife during the entire extent of the cutting stroke of that knife, thereby insuring that there will be no variation in the edge thickness of the feather due to uneven cutting of the chamfering knife and making it practicable to employ a chamfering knife shaped to bevel the sole edge at an unusually small angle to the face of the sole, for example, an angle of 15 or less, while still insuring clean cutting and uniformity of edge thickness reduction. The work table 4!] is mounted with provision for accurate setting up adjustment relatively to the auxiliary work support 422 in order to provide for only sufficient clearance between the adjacent edges of the table and the auxiliary support to insure that the table will turn freely. For this purpose a rib 424, which is formed on the under side of the block 4|6, fits within a horizontal undercut or dovetailed guideway 4245 in the carrier 420. The block M6 is fixedly but adjustably secured to the carrier 42.4 by means of a set screw 428 (Fig. 3) the inner end of which engages the rib 424 on the block M6. The work table carrier 42!) is formed with a depending hollow stem 434 which is rotatably supported in the line of the pressure exerted upon the work by the feed dogs and the presser gages. As shown, the work table stem 430'is mounted in a vertical bearing 432 formed in the middle portion of an arm 434 the rear portion of which is fixedly secured by means of a nut 436 to the reduced upper end of a vertical rockshaft 438 which is journaled in a bracket 44!] formed on the head 14.

To permit adjustment of the edge gage transversely of the direction of work feed to vary the width of the margin in diiferent portions or the sole, provision is made for adjustment of the work table carrier supporting arm 434 about the vertical rockshait 433. For this purpose, the forward end of the arm 434 is slotted to receive a block 442 (Figs. 3 and 6) carried by an eccentricpin 444 projecting from a disk 445 fixed to the upper end of a vertical rockshait 446 and which is adapted to be manually turned to adjust the arm 434 and the work table, as will be hereinafter described. The carrier 42!} is prevented from being displaced relatively to the carrier arm 434 by means of a post 448 (Fig. 7) secured to the head 14 and engaging between a pair of lugs which are formed on the lower side of the carrier 42%] and one of which is shown at 450.

The work table carrier 424 is supported within the bearing'432 in the arm 454 by means of a nut 454 (Fig. '7) on the threaded upper portion of a post 456 which, in turn, is supported by two toggle links 458 and 454 (Fig. 3) of which the latter is pivoted at 442 between the ears of a bracket 464 which is secured by a clamp screw 466 to the lower end of the vertical rockshaft 433. The nut 454 is formed with an annular flange 468 on which rests the stem 4% of the work table carrier 42!). For the purpose of turning the post 455 so as to raise or lower the nut 468, and thus to adjust the elevation of the work table 49 to adapt the machine for operating upon soles of diiferent thicknesses, a hand Wheel 4'! is clamped by means of a nut 412 against a shoulder 414 on the post A spring-pressed latch 4'46, pivoted at 411 to the exterior of the bearing 432, is adapted to engage with notches 4'68 formed in the periphery of the hand Wheel 4149 to hold the latter normally against turning and thus to secure the table in vertically adjusted position. A series of suitable graduations upon the surface of the hand wheel 414 are adapted to cooperate with the latch 416 as a fixed reference point to indicate the adjustment of the table by means of figures indicating units or irons of sole thickness. For example, by turning the hand wheel 4'54 until the graduation marked-5 is opposite the latch 47%, the work table will be adjusted vertically to adapt the machine to operate upon a sole of the thickness of 5 irons. The toggle links 4583 and 440 are connected together by means of a knuckle pivot 480 while the toggle link 458 is connected with the post 454 by means of a ball-and-socket joint 482, the latter permitting rotation of the post 456 for the purpose of adjusting the elevation of the work table.

As shown in Fig. 3, the toggle comprising the links 458 and 464 is shown in a straightened condition determined by engagement of an extension 484 of the toggle link 444 with the lower portion of the bracket 464-; a spring 484, secured at its upper end to the arm 434 and at its lower end to the toggle link extension 484, tends to maintain the toggle links straightened so as to support the work table 4E! in work supporting position. Inorder that the work table 48 may be lowered to facilitate introduction or removal of the work, the toggle link extension 484 is connected by means of a rod 488 with a foot treadle 4% (Fig. l) which is secured to a horizontal rockshaft 492 that is journaled in the base 18 of the machine. By depressing the treadle 484 the toggle link extension 484 may be swung in a direction to break the toggle 458-465] and thus to lower the work table. Upon release of the treadle 490, the spring 485 will cause the toggle 458440 to straighten and thus to raise the work table into work. supporting position. Inasmuch as the toggle is straightened when the treadle 494 is raised, the work table will be unyieldingly-supported in its operative position.

As best shown in Figs. 3 and6, the rockshaft 445 which is turned manually-to adjust the carrier 424, withthe work table and the edge gage, transversely of the direction of work feed to vary the width of the sole margin or, in other words, the distance between the channels and the edge of the sole, is journaled in a thimble 509 adjustably fixed in a bracket 542 formed on the head 14. The lower end of the rockshaft 446 carries a head 544 to which is pivotally connected, at 506, a hand lever 548 by which the rockshaft may be turned. When the rockshaft 446 is so turnedthe resulting movement of the eccentric pin 444 and the block 442 swings the arm 434, thereby moving the carrier 420, and with it the work table and the edge gage, transversely of the direction of work feed.

In channeling soles it is customary to use three different widths of margin, one at the shank portion, another at the inside of the forepart, and a third at the outside of the forepart and, accordingly, three adjustable stops are provided for determining the three operative positions of the edge gage. A pin 5 I 4, carried by the disk 445, extends into a recess 44? in the bracket502 and is adapted to engage a shoulder 543 at one end of the recess 44? to limit the extreme forward position of the edge gage which the latter occupies when channeling with the narrowest margin. The intermediate position of the edge gage is determined by a latch 5!! which is carried by the hand lever 598 and engages a recess 5l4- in a 75

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