US2543760A - Rough rounding machine for stitchdown shoes - Google Patents

Description

March 6, 1951 J. c. cANTLEY vROUGH ROUNDING MACHINE FOR STITCHDOWN SHOES 5 Sheets-Sheet 1 Filed March 1, 1950 /n uen for Josep/z 06am/ey By his Atto March 6, -1951 J. c. cANTLEY ROUGH ROUNDING MACHINE FOR sTITcHDowN sHoEs Filed March l, 1950 5 Sheets-Sheet 2 IIL-l March 6, 1951 J. c. cANTLEY 2,543,760

ROUGH RouNDING MACHINE Foa s'rrrcHnowN sHoEs Filed uarn 1 1950 5 sheets-sheet s als 58 nven 01 Josep/z C. C'amley y hi Attor ey March 6, 1951 J. c. CANTLEY ROUGH RoUNDING MACHINE FOR sTITcHDowN sHoEs 5 Sheets-Sheet 4 Filed March 1, 1950 n venan Josep/z C'. Canley 3 1/ lus Attor ey March 6, 1951 j- C, CANTLEY 2,543,760

ROUGH ROUNDING MACHINE FOR STITCHDOWN SHOES Filed March 1, 1950 5 Sheets-Sheet 5 Feed Pain# WON( Cla/"Ped Work Released [lam in P g 51M e SMM B0 from feesf \e nwe Rg@ Feed/'ng wf saentec Mar. 6, 1951l ROUGH ROUNDING MACHINE FOR STITCHDOWN SHOES Joseph C. Cantley, Beverly, Mass., assigner to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New `lersey Application Marcin 1, 1950, serial No. 147,011 10 claims. (ci. 12-85) This invention relates to machines for roundingT soles of shoes and, more particularly, is concerned with improvements in a machine, for rounding soles of stitchdown shoes, of the type disclosed in an application of Corwin W. Baker for United .States Letters Patent Serial No. 638,285, led December 29, 1945 which issued as Patent No. 2,508,360 on May 23, 1950.

The upper material of a stitchdown shoe is commonly flanged outwardly against the margin of the sole which projects from the side of the shoe.V In order to facilitate this hanging operation, particularly where the contour of the shoe is "convex, the hanged portion of the upper is sometimes'slit inwardly from its edge. In the abovementioned Baker machine there is a crease guide which isV received in the crease between the side of the Vupper of a shoe presented to the machine and the outwardly flanged portion of the upper. The Baker machine also comprises a smoothing member which acts upon the flanged just before passing beneath the crease guide, and

any impediment to the feeding action of the Work is avoided.

This smoothing member has a conical, pointed end which engages the work and is inclined to the plane of the flange at an angle corresponding to the taper of its conical end. It is also mounted to rise and fall axially so that its end will always bottom inA the crease of the shoe regardless of the contour of the portion of the shoe which it engages. It will now be evident that upward axial movement of the inclined smoothing member causes its work engaging surface to recede slightly from the surface of the crease guide which engages the flange. This tendency is not great enough, once the smoothing member has been adjusted for a given setting of the crease guide, to interfere with the intended` action of the smoothing member. It is desirable, however, that the smoothing member, which in the Baker machine is mounted for universal adjustment with respect to the crease guide, be adusted in respect to the crease guide whenever the posi-A tion of the latter is changed materially for the purpose of changing the sole edge extension to be formed uponV the shoe. y

In View of the foregoing, one object of the invention is to make provision, in a machine of this type, for the simultaneous adjustment of the smoothing member with the crease guide whenever the latter is adjusted to change the sole edge extension. To this end, and in accordance with one feature of the invention, the mounting for thesmoothing member in the illustrated machine is associated with the crease guide, so that the smoothing member partakes of any.`adjusting movement of the crease guide. Accordingly,'in the illustrated machine the adjustment ofthe crease guide does not require any separate adjustm-ent of the smoothing member in order that the desired relation between them will be maintained.

A further object of the invention is to improve the cutting and feeding actionsinY a machine of this type, giving consideration to both the operat-V ing cycle of the machine and the need for maintaining the required relations between the feed point, the knife, and the crease guide.

As in the above-mentioned Baker machine, the illustrated machine comprises a feed point and a bottom rest each having alternate feeding Vand returning motions, their feeding motions being directed from right to left and occurring simultaneously. At the beginning of each feeding movement of the feed point, it is reciprocated slightly toward the Work, to relieve the pressure of the work against the lcrease guide. Similarly, at the beginning of each'return movement of the feed point, it is reciprocated in the opposite-direction to cause the pressure of the work to be transferred to the creaseguide again, whereby the feed point will have no back-feeding tendency upon the work during its return stroke. In accordance with va further feature of the invention, provision is made inthe illustrated machine forV readily adjusting the reciprocatory stroke of the feed point in such a manner vthat it projects rearwardly beyond and is retracted forwardly behind the ange engaging surface of the crease guide during its feeding and return strokes, respectively, when in its terminal positions. This result is achieved, in the illustrated machine, by mounting one of the cam members, which provide the reciprocatory movement of the feed point, for adjustment axially thereof and, further, by providingr means for adjusting the cam 4rmember and for releasably locking it in its ad-d justed position. This adjustment of the feed point, although described above in terms of its relation to the crease guide, is of equal importance as a means for insuring that the knife and feed point just meet at the end of the cutting stroke of the knife. That is, assuming that an approximately correct setting of the knife has been made upon its carrier, the desired relation between the feed point and the knife can be precisely obtained, and thereafter maintained, by such a narrow range of adjustment of the feed point that the prior adjustment of the feed point relatively to the crease guide is not upset.

Invention is also to be recognized in the construction.. and arrangement of the operating mechanism for the feed point and bottom rest on account of which these members alternately have extended periods of rest which are so related to the cutting action of the knife that no feeding force is imparted to the work While the cutting action of the knife takes place, and no backfeeding tendency can occur at any time during the operating cycle of the machine.

These and other features of the invention will now be described in greater detail with reference to the accompanying drawings, and will' be; de'- ned in the claims.

In the drawings,

Fig. l is a side elevation of an illustrative machine embodying the invention, certain parts of the machine having been broken away and shown in section;

Fig. 2 is a plan view of the machine, its cover having been omitted to show the operating mechanism, parts of which are shown in section;

Fig. 3 is a front elevation from which the bottom rest and parts of its mounting have been omitted, in order not to obscure the driving mechanism for the bottom rest;

v Fig. 4 is a front elevation illustrating the shoe engaging members of the machine, and particu-1 larly the bottom rest and associated parts which are omitted in Fig. 3;

Fig. 5 is an elevation of a part of the machine as viewed from its right-hand side,I showing the bottom rest and the driving means for the smoothing member;

. Fig. 6 is a sectional plan view of the chopping knife, its carrier, and the mountingY of the latter in the machine;

Fig. '7 is a time chart illustrating the operating characteristics of the machine; and

Fig. 8 is a diagrammatical view (corresponding to Fig. l) illustrating the relation between the principal parts of the driving mechanism of the machine.

Certain parts of the illustrated machine have the same functions as the corresponding parts of the above-mentioned Baker machine, and are similar thereto in construction. rlhese parts comprise a crease guide I0 (Figs. 1, 3 and 4) which is adapted to be received in the creasel between the side of the upper of a stitchdown shoe and its outwardly flanged margin. The bottom of a shoe being operated upon is engaged by abottom rest I2 which urges the shoe outwardly to cause its flanged portion to be held against the inner surface of the crease guide. The sole edge of the shoe is formed by a reciprocatory knife I4 (Fig. 1) which cuts across the sole edge against the usual anvil I6, the latter being a part of, and at the lower end of an oscillating feed point I8. The crease guide I, bottoming in the above mentioned crease of the shoe, positions the shoe so as to determine the line of cut of the knife.

The feed point I8 and the bottom rest I2 are moved together from right to left to impart intermittent feeding movements to the work,.and just prior to each feeding movement,y the feed point is moved slightly toward the work to relieve the pressure of the work upon the crease guide, whereby no frictional resistance to the feeding of the work is caused by the crease guide. One cutting stroke of the knife occurs between successive feeding movements of the work, and while the knife is in the work, the bottom rest is returned to the right-hand end of its stroke, the feed point being at rest during this period. The cutting action of the knife occurs while the feed point is at rest; but when the knife has reached. the end of its cutting stroke, the feed point is moved outwardlyv away from the shoe, allowing its outwardly flanged margin again to re-engage the crease guide. The return motion of the feed point next takes place while the shoe is gripped, between the crease guide and the bottom rest which is stationary at this time.

Immediately to the right of the crease guide IIJ there is a smoothing member 20 which is constantly rotated, and smooths the upper side of the flanged margin of the shoe just before it passes beneath the crease guide, whereby any interruption in the feeding movement of the shoe which might be caused by unevenness in the outwardly flanged margin of the shoe is avoided. Having outlined the purpose and operation of the principal shoe engaging members of the machine, the details of their construction and of the driving mechanism for them will now be described.

The knife I4 is adjustably fixed to the forward end of a cylindrical knife carrier 22 (Fig. 6) which is mounted to reciprocate horizontally in bearings 24, 26 supported in the frame 28 of the machine. A roller stud 30, mounted upon a projection 32 extending from the rear end of the carrier 22, runs in a slot 34 formed in a guide 36 which is fixed to the frame. The knife edge is thus held in a horizontal position at all times. The knife carrier at its rear end is connected by a pin 38 to a connecting rod 40 (Fig. 2) which is driven by a crank 42 on a rotating crank shaft 44. The crank shaft is mounted upon ball bearings 46, 48, one bearing being mounted upon each side of the machine. The crank shaft may be driven by a suitable source of power through a belt 5U which runs over a pulley 52 fixed to the crank shaft.

The crease guide I0 is of usual form having two arms which are connected at their lower ends by a shoe positioning portion. The upper ends of the arms are slotted to receive bolts 53 (Fig. 11) by which the crease guide is adjustably fixed to the lower end of a slide 54.r This slide is mounted for Vertical movement in ways formed in the forward endof a. head` casting 56 secured to the frame 28. Plates 58,. which are fixed to the casting 56, hold. the; slide within the abovementioned ways. y

The crease guide I0 can be readily adjuste vertically, in order toV determine the sole edge extension, by turning an eccentric 60 (Figs. 1 and 3) which fits withina slot 62 formed in the upper part of the slide 54. This. eccentric is mounted for rotative and` axial movement upon a stud 64 which isfiXed inthe head casting 56. Sets Qf serrated shoulders 66, 66, oneupon the stud and the -other at the rear side of the eccentric, normally engage each other and prevent the eccentric from rotating, the shoulders being yieldingly held in this relation by a spring 68 which is compressed between the eccentric and the head of the stud. In order to adjust the crease guide the operator grips a knurled knob I0 projecting forwardly from the eccentric, pulls' the eccentric outwardly to disengage the shoulders '66, 66, and then rotates the eccentric to shift the crease guide up or down as may be required. A set screw I2 threadedv in the slide 54 and adapted to engage the eccentric,

provides further means for securing the latter in its adjusted position.

In order that adjustment of the crease guide will not disturb the desired relation between it and the smoothing member 20, the latter is so mounted that it is automatically adjusted simultaneously with the crease guide, and to the same extent. This result is obtained by the use of a common mounting for the smoothing member-and crease guide. That is, the slide supports not only the crease guide, but also a bracket I6 to which a bearing lit, in which the smoothing member rotates and slides axially, is xed. The bracket itself is secured to the rear side of the slide 54 by bolts i3. These bolts pass through horizontal slots in the ends of the bracket 16, whereby adjustment of the smoothing member toward and away from the crease guide is permitted.

The construction of this mounting for the smoothing member is such that the lower, conical, and knurled end of the smoothing member is closely adjacent to the crease guide, and is inclined as shown in Fig. 3. Moreover, as viewed in elevation (Fig. l) or plan (Fig. 2), the smoothing member is so positioned that its conical surface is substantially tangent to a plane including the inner surface of the crease guide. When no work is presented to the machine, the smoothing member is slightly below its normal operating position, this lowermost position of the smoothing member being determined by the engagement of a driving pulley Sd, xed to the upper end of the smoothing member, with the top of the bearing 14. When a shoe is presented to the machine the smoothing member is lifted slightly, bottoming in the crease between the side of the upper and its iianged margin, and floats in the crease, rising or falling as the contour of the portion of the shoe being operated upon changes.

The puliey 8d is driven by a belt 82 which runs over idler pulleys d, 86 (Fig. 5) and a driving pulley 83, the latter being fixed to the crank shaft 44. Thepulley 8b is mounted upon a stud 90 which is xed to the right-hand side of the frame. In order to permit control'of the tension in the belt 82, the idler pulley 84 is mounted upon the upper end of an arm 92 which is mounted for angular adjustment on a screw 94. This screw is threaded into a removable plate 96 which covers a hand hole in the side of the frame. The arm 92 is held in adjusted position by a clamp screw 98 which extends through an arcuate slot |00 in the arm, and is threaded into the plate.

At the beginning of each feeding movement of the feed point it is quickly reciprocated rearwardly of the machine into its clamping position, in which the inner side of the feed point is slightly to the rear of the inner surface of the crease guide. Immediately after the work is clamped, the cutting stroke of the knife begins, and throughout both the cutting stroke of the knife and the feeding stroke of the feed point the feed point is retained in its clamping position. Since this action of the feed point prevents the work from pressing against the crease guide, the latter does not tend to retard the feeding movement of the work, which is completed as the knife engages the work. The mounting and operating mechaniszn for the feed point will now be described.

The feedpoint is fixed to the outer end of a shaft |02 (Fig l) which is mounted to slide and oscillate in a pair of bearings |04, in'the head casting, and a second pair of bearings |06 in the frame 28. The shaft is urged forwardly by a spring |98 (Figs. 1 and 2) which is housed in a d bore inthe rear end of the shaft, and is 'corripressed between a washer I0 in the bore and a bracket ||2 which is xedto the top of the rearmost bearing |06. Theaxial position of the shaft |02, and hence the position of the feed point toward and away from the knife, -is determined by the engagement of a pair of cam members i |4, IIS, which, when the former is oscillated, cause the above-mentioned reciprocatory movement of the feed point. Y

The cam member ||4 is mounted to rotate freely upon the shaft |02, and bears at its rearward side against a collar ||8 which is locked to the shaft |02 bya splined connection. The cam IIB-is provided with a pair of ears |20 (Fig. 2) having elongated slots through which screws |22 pass, and are threaded into the rearward bearing |04 on the head casting The cam IIE is supported against thrust directed forwardly of the machine by an abutment comprising a ring |24 which bears against the rear side of the bearing |04, and is threaded upon the cam member IIB. The cam members H4, ||6 are provided with a series of projectionsf 26, |28 respectively, the projections of each series extending into spaces between the projections of the Iretracted position.

y engagement with each other.

other series when the feed point is in its forward, However, when the cam member H4 is oscillated, its projections |26, which have inclined sides, slide along the similarly inclined sides -of the projections |28, bringing the ends of both sets of projections into The feed point I8 is thus moved rearwardly against the pressure of the spring |00 through a distance equal to the combined heights of the projections. The size of these projections as shown in the drawings has been exaggerated for the purpose of clarity. The actual stroke of the feed point is in the neighborhood `of one thirty-second of an inch. It is evident that by turning the ring |24, after having loosened the screws |22, the position of the cam H6 can be shifted axially of the shaft |02. One purpose of this adjustment is to insure that the work engaging surface of the feed `point, in its forward retracted position, will be somewhat forward of the inner work engaging surface of the crease guide, and that this relation between the crease guide and feed point will be reversed when the latter is in its clamping position.

Another important purpose of this adjustment is to enable the operator readily to adjust the machine so that the knife and feed point just meet at the end of the cutting stroke of the knife. The range of this latter adjustment is ordinarily so small that it may be made, and repeated, without destroying the desired relation referred to above between the feed point and the crease guide. The ring may be locked in various positions of adjustment by a pin |30 which is mounted to slide axially in the bearing member H6, and may be received in any of a number of grooves formed in the rim of the ring.` To release the ring the pin |30 is pulled rearwardly against the resistance of a spring |32 which encircles its forward end, this portion of the pin having been reduced in diameter so that when it is moved over the ring |24', the latter may be rotated Without interference from the pin.

Oscillating movement is imparted to the cam member ||4 by mechanism comprising a link |34 (Figs. 1 and 2), a lever |36, a connecting rod |38. and a crank |40, the latter being formed upon the crank shaft 44. The link |34 is connected by spect to the driving member.

ball-and-sccket joints to the forward end of the lever |36, and to the end of an arm |42 extending to the left from the cam member H4. The lever |36 is pivoted on a -stud |44 which is fixed to the frame, and at its rear end is connected by a pin |46 to the connecting rod |38. It will now be understood that, during one revolution of the crank shaft 44, the feed point will be moved through one cycle of its reciprocatory motion, the clamping stroke being provided by the camming action of the cam members ||4, H6 and the releasing stroke by the spring |08.

The mechanism for imparting the oscillatory feeding movement to the feed point includes a driving member |48 which surrounds, and is splined to, the shaft |02 so that the latter is free to slide axially, but not to rotate, with re- The driving member has an arm |50 which is connected by a ball-and-socket joint to a link |52, the lower end of which is connected by a ball-and-socket joint to both a connecting rod |54, and another link |56. The link |56 is mounted to swing upon a stud |50 fixed in the frame, and with the link |52 constitutes a tOggle. The connecting rod |54 is operated by an eccentric |60 formed on the crank shaft 44. It will now be evident that as the toggle formed by the links |52, |56 is moved between a straightened condition and that in which it is shown in Fig. 1, the driving member |48, and hence the feed point I8, will be oscillated, one complete feeding stroke and one complete return stroke occurring during each revolution of the crank.

The bottom rest I2, its mounting and the driving means therefor will now be described. The bottom rest consists of a curved plate mounted to swing about a vertical axis toward and away from the crease guide l upon a shaft |64 (Figs. 4 and 5) carried by a support |66. A

coil spring |68 surrounding the upper and lower ends of the shaft bears against the rear side of the bottom rest, urging the latter forwardly. The ends of the spring are hooked about the support |66, The support, together with a bracket |10, are secured by a screw |12 to the end of a shaft |14 which is mounted to reciprocate in bearings |16 formed in a housing |18 which is xed to the head casting. In order to prevent the shaft |14 and bottom rest from rotating about the axis of the shaft, a roller stud |80, mounted upon the bracket |10, is arranged to run in a groove |82 formed in a boss |84 which projects from the front of the frame. The bottom rest is adjustable about a tangent to its upper edge and parallel with the inner surface of the crease guide owing to the provision of an arcuate slot |86 in the support |66, and through which the screws |12 extends. The bottom rest i2 may therefore be adjusted angularly, without altering its position heightwise, to permit the shoe bottom to seat flatly upon it when the shoe is properly presented to the machine.

Forward movement of the bottom rest l2 is limited, sc that the rest cannot strike the crease guide or feed point, by the engagement of a strut |58, extending to the right from the bottom rest, with a pad |90. This pad has a shank |92 which is mounted to slide in the frame, and is urged rearwardly thereof by a spring |194. An adjusting screw E96 threaded in the frame behind the pad acts as an adjustable stop for the latter. The screw is frictionally held in adjusted position by a spring |98 which isrcompressed between a waher 200, on the inner end of the screw, and

the frame. In order to facilitate presenting a shoe to the machine, the bottom rest may be moved away from the crease guide by depressing a treadle (not shown) which causes a crank 202, arranged to engage the rear end of the shank |92, to swing the bottom rest, against the action of the spring |68, in a clockwise direction when viewed from above. The crank is mounted to swing upon a stud 204 carried by the plate 96, and is connected to the treadle by a rod 206.

A reciprocatory feeding movement is imparted to the bottom rest |2 by mechanism comprising a bell-crank 208 (Fig. l) carrying at its forward end an arm 210 the end of which is forked to receive a flattened web 2|2 (Fig. 2) formed in the mid-portion of the shaft |14. A driving connection between the shaft and the arm 2|0 is provided by a pair of square blocks 2|l (Figs. 3 and 4) which fit within transverse recesses formed in the arm, and are rotatably mounted upon a pin 2 6 which passes through the web 2|2. The bellcrank 208 is rotatably mounted upon a rod 2|8 which is supported at its forward and rear ends by the housing |13 and the frame 23, respectively. Extending toward the right from the rear end of the bell-crank is an arm 220 to which a link 222 (Fig. 3) is connected by a balland-socket joint. At its upper end this link is connected by a similar joint to both a connecting rod 224 and another link 226, which, with the link 222 constitutes a toggle. The link 226 is pivoted at its upper end on a stud 228 fixed in lthe frame. The connecting rod 2M is driven by a crank 230 formed on the crank shaft 44. It Will now be evident that during a complete revolution of the crank shaft the toggle comprising the links 222 and 226 will be moved from a straight relation into an angular relation, as illustrated in Fig. l, and back again to a straight relation, causing the bottom rest to be reciprocated alternately in opposite directions.

The operating characteristics of the machine will now be described with reference to the chart of Fig. '1, it being understood that the cycle to be described starts when the knife is in its fully retracted position as shown in Fig. 1. Shortly before this time (315), the feeding action of the feed point and the bottom rest will have begun, and the feed point also will have been reciprocated rearwardly of the machine to grip the work and to relieve the pressure of the work against the crease guide.

The feeding action of the feed point and bottom rest now continues throughout approximately of rotation of the crank shaft d/i, at the end of which period the knife will have advanced into engagement with a work piece of average thickness. At this time also the toggle |52, |56 will be approaching its straightened condition, and simultaneouly, the connecting rod |543 will be approaching a dead center relation with respect to the eccentric |60. The effect of these relations occurring simultaneously is to cause the feed point to remain at rest throughout the succeeding 90 of rotation of the crank shaft. During this period of rest of the feed point the knife cuts completely through the work, the end of the cutting stroke coinciding substantially with the end of the period of rest of the feed point. The clamping action of the knife upon the work while the cut is being made firmly holds the work against movement in any direction, and it is in this part of the cycle of the machine that the greater part of the return movement of the bottom rest occurs. Accordingly, any tendency for the bottom rest to impart a back feeding movement to the work is avoided. Shortly after the return stroke of the knife beings, the feed point is reciprocated forwardly to allow the shoe to be pressed against the stationary crease guide by the bottom rest, which, at this time, begins a period of rest equivalent to about 90 of rotation of the crank shaft. While the work is thus clamped between the crease guide and the bottom rest. both of which are now stationary, the feed point has its return motion. It is evident that back feeding of the work is avoided at this time, not only because the work is gripped by the crease guide and bottom rest, but also because the feed point has no clamping action upon the work during its return stroke. Moreover, during the greater part of the return stroke of the feed point the knife is in the work, and hence still holds the work against any back feeding movement. Simultaneously with the beginning of the feeding movements of the feed point and bottom rest, at a point about 45 before the completion of the cycle being described, the feed point is reciprocated quickly toward the shoe so that the pressure of the latter against the crease guide is relieved at the same time when the feeding movement of the work begins. It is to be understood that the knife, during itsl return stroke. `will have moved out of engagement with the work while the work is held between the stationary crease guide and bottom rest. Moreover. as the knife is still receding from the work at this time it cannot interfere with the succeeding feeding movement of the work, which begins shortly before the knife reaches its fully retracted position.

As in the case of the above-mentioned toggle mechanism for driving the feed point, the toggle 222, 225 approaches its straightened condition simultaneously with the approach of the connecting rod 224 to a dead center relation with respect to the crank 230: and because of this the bottom rest has a dwell or period of rest extending through 90 of rotation of the crank shaft. It is further observed that while the feed point toggle 152, 56 is passing through its straightened phase (in order to interrupt they feeding movement while the cutting action of vthe knife takes place) the bottom rest toggle 222, 226 is in the opposite, angular position whereby the rapid return stroke of the bottom rest is provided. Similarly while the toggle 222, 22S passes through its straightened phase, the toggle 52, |55 is in its angular phase, which causes the rapid return motion of the feed point to occur while the bottom rest is at rest and holding the work against the iixed'crease guide.

Assuming that a shoe has been presented to the machine with the bottom of the shoe seated Vupon the bottom rest l2, and with the crease guide bottoming in the crease between the side of the shoe upper and its outwardly flanged margin, the shoe is progressively fed with a succession of feeding strokes directed toward the left. The knife makes a cut through the sole against the anvil on the feed point between successive feeding movements, the feed point having been moved rearwardly to meet the knife at the end Y.of its cutting stroke so as to relieve the crease guide from any thrust created by the knife. Just prior to the engagement of the outwardly flanged margin of theupper with thecrease guide, it is smoothed or flattened bythe smoothing member 2E in order to eliminate any wrinkles or projections n the flanged portion of the upper which might, in striking the crease guide, interfere with the feeding movement of the shoe.

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

y 1. In a machine for rounding the sole edges of stitchdown shoes, a reciprocatory knife, a guide adapted to be received in the crease between the side of the upper of a shoe and the outwardly flanged margin thereof, a smoothing member situated closely adjacent to the edge of said guide toward which the shoe is advanced as it is progressively presented to said knife, a common mounting for said guide and smoothing member comprising a slide movable to vary simultaneously the relation of said guide and said smoothing member with respect to the line'of cut of said knife, and means for adjusting said slide.

2. In a machine for rounding the sole edges of stitchdown shoes, a reciprocatory knife, a guide adapted to be received in the crease between the side of the upper of a shoe and the outwardly flanged margin thereof, a smoothing member having a tapered work engaging portion arranged to engage the outwardly flanged margin of the shoe adjacent to the edge of said guide toward which the shoe is advanced, a common mounting for said guide and smoothing member comprising a slide mounted for adjustment .toward and away from the line of cut of said knife, a rotatable member cooperating with said slide to adjust the latter in responseto rotation of said last-mentioned member, and locking means for releasably holding said last-mentioned member in adjusted position, said last-mentioned mem` ber being mounted for axial movement to disengage said locking means.

3. In a machine for rounding the sole edges of stitchdown shoes, a reciprocatory knife, a guide adapted to be received in the crease between the side of the upper of a shoe and the outwardly flanged margin thereof, a rotary smoothing member disposed adjacent to the edge of said guide 3i toward which the shoe is advanced, said member being displaceable longitudinally of its axis of rotation by the shoe, means for rotating said member to cause its work engaging portion to turn in the direction of the feed movement of the work, a common mounting for said guide and smoothing member comprising a slide mounted for movement upon the frame of the machine toward and away from the line of cut of said knife, said slide having a slot therein extending transversely of the direction of its ,movement a rotatable eccentric disposed within said slot for adjusting said slide, said eccentric having a set of shoulders in intertting relation with another set of fixed shoulders, and a spring acting upon said eccentric yieldingly to hold said shoulders in engagement with each other, whereby the eccentric is releasably held in adjusted position.

4. In a rounding machine having a reciprocatorir knife, feeding means comprising abottom rest and a feed point arranged to support the work against the thrust of the knife, said bottom rest and feed point being movable to impart successive feeding movements to the work, a crease guide, mechanism for reciprocating' said feed point toward and away from said knife at the beginning and end of each feeding movement respectively, whereby pressure of the work upon the crease guide isrelieved during its feeding movement, said mechanism comprising cooperat- 11Y .ins camsj and means for adjusting the position of one oisaid .cams to control the terminal positions .of'said feed point with respect to said knife and crease guide. Y

5, a rounding machine having a reciprocatory knife, feeding means comprising a bottom rest and a feed point arranged to support the work against the thrust of the knife, said bottom rest and -feed point being movable to impart suceessive feeding movements to the work, a crease guide, mechanism -for reciprocating said feed point toward and away from said knife at the beginning and end of each feeding movement respectively, whereby pressure of the work upon the crease guide is relieved during its feeding movement, said mechanism comp-rising cooperating earns, an adjustable vabutrnemt engaged by one of said cams, cooperating inclined surfaces on said abutment and said last-mentioned cam constructed and arranged to vary the terminal positions of said feed point in `response to movement of said abutment.

o, a rounding machine having a reciprocatory knife, feeding means comprising a bottom rest and a feed point arranged to support the Work .against the thrust of the knife, said bottom rest and feed point being movable to impart successive feeding movements to the work, a crease guide, `meoljlanism for reciprocating said feed point toward .and away from said knife at the beginning and end of each feeding movement Z'cspetiveiy, whereby pressure of the work upon .the crease guide is relieved during its feeding movement, said .mechanism comprising cooperating cams. .abutment threaded engagement with one .ci .said cams whereby the terminal positions of said feed point are varied in response to rotative adjustment of said abutment- '.L In a rou ding machine having a reciproca- :toiv knife. feeding means .comprising a bottom rest and a iced point arranged to support the work against the thrust ci the knife, said bottom rest and feed point boing movable to impart successive feeding movements to the Work., a crease guide, mechanism for reciprocating said feed Point toward and from said knife at the beginning .and end of each feeding .movement respectively, whereby pressure oi the Work upon .the crease guide is relieved during its feeding movement, said mechanism comprising cooperating cams, an abutment .for one of said cams, .said abutment boing movable with respect .to said last-inentioned cam, whereby the .terminal positions. of `.said feed point are varied with respect to said knife and crease guide, and means for releasablv holding said abutment in adjusted position- '.In a rounding machine having a crease ,snide vfor positioning a shoe to be rounded, a bottom rest arranged to urge the shoe toward said crease guide. a reciorocatorv .knife movable through alternate cutting and return strokes, a feed point for supporting the shoe against .the thrust of said knife, means .for .alternately moving said feed point toward said .knife to relieve pressure of the shoe .from said crease guide during the cutting stroke of said .knife and then avvav from the knife, at the end f its Cutting stroke, to permit said crease guide to receive the pressure of the shoe during the return stroke of said knife, driving means .for moving said .feed point through a 4feeding stroke in one direction and a return .stroke in the opposite direction, the end of said feeding stroke and the beginning of said return stroke being separated bv a period of rest which terminates at the end of the cutting stroke of said knife, and a second driving means for imparting to said bottom rest a feeding stroke in synchronism with the feeding stroke of said feed point and a return stroke terminating when the pressure of the shoe is transferred from said feed point to said crease guide.

9. In a rounding machine having a crease guide for positioning a shoe to be rounded, a bottom rest arranged to urge the shoe toward said crease guide, a reciprocatory knife movabie through alternate cutting and return strokes, a feed `point for supporting the shoe against the thrust of said knife, means for alternately moving said feed point toward said knife to relieve pressure of the shoe from said crease guide during the cutting stroke of said knife and then away from the knife, at the end of its cutting stroke, to permit said crease guide to receive the pressure of the shoe during the return stroke of said knife, driving means for moving said feed point through a feeding stroke in one direction and a return stroke in the opposite direction, the end of said feeding stroke and the beginning of said return stroke being separated by a period of rest which terminates a-t the end of the cutting stroke of said knife, and a second driving means for imparting to said bottom rest a feeding stroke in synchronism with the feeding stroke of said feed point and a return stroke terminating when the pressure of the shoe is transferred from said -feed point to said crease guide, said second driving means comprising a toggle mechanism constructed and arranged tc cause a dwell in the operation .0f said bottom rest coextensive with the period when said feed point is retracted from said knife.

10. In a rounding machine having a crease guide `for positioning a shoe to be rounded, a bottom rest arranged to urge the shoe toward said crease guide, a reciprocatory knife movable through alternate cutting and return strokes, a

feed point for supporting the shoe against the thrust of said knife, mean-s for reciprocating said feed point toward and away from said knife valternately to relieve pressure of the shoe from said crease guide during the cutting stroke of said knife and. then to permit said crease guide to receive the pressure of .the shoe during the return Ystroke .of vsaid knife, driving means for moving said feed point through a feeding .stroke .in one direction and a return stroke in the opposite direction, said driving means comprising a toggle mechansm constructed .and arrangedV to cause a dwell in the operation of said feed point following its feeding stroke and terminating at the `end of the cutting stroke of said knife, and a second driving means for imparting to said bottom rest a feeding stroke in synchronism with the feeding stroke of said feed point and a return stroke which terminates when the pressure of the shoe is transferred from said feed point to said crease guide, said second driving means cornprising a toggle mechanism constructed and arranged to cause a dwell in the operation of said bottom rest which is coextensive with the period when the shoe is gripped between said bottom rest and crease guide.

JOSEPH C. CANTLEY.

No references cited.

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