US882009A - Sole-rounding machine. - Google Patents

Description

B. F. MAYO. SOLE ROUNDING MACHINE.

APPLICATION FILED NOV. 7, 1902.

' PATENTED MAR. 17, 1908.

4 SHEETS-SHEET 1.

. Z wwyail PATENTED MAR. '17, 1968.

B. P. MAYO. SOLE ROUNDING MACHINE.

APPLICATION FILED NOV. 7. 1902.

4 SHEETS-SHEET 2.

ji'ZUiZZ'Y/i Z 127095566 d J /T-VW W 5v. 340M221 I uohsszmos PATENTED MAR. 1?, 19

' B. F. MAYO.

SOLE ROUNDING MAGEHNE.

APPLICATION FILED NOV. 7, 1902.

4 SHBETS-SHEBT s.

Mnzor PATENTED MAR. 17, 1908.

B. F; MAYO. SOLE ROUNDING MACHINE.

APPLICATION FILED NOV. 7. 1902.

4 SHEETS-SHEET 4.

Massachusetts,

others skilled'in the art 25 duced by rotating either the pattern 35 form therein,

UNITED s'ra'rp sgriaganr carrots.

BENJAMIN F. MAYO, OF SALEM, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SOLE-BOUNDING MACHINE.

Specification oi Letters Patent.

Patented March 17, 1908.

To all whom it may concern:

Be it known that I, BENJAMIN F. MAYO, a citizen of the United States, residing at Salem, in the county of Essex and State of and useful Improvements in Sole-Rounding Machines; and

lowing to be a full, clear, and exact description of the invention, such as will enabe to which it appertains to make and use the same. The present invent-ion relates to sole rounding machines of that class which comprise a pattern of the shape of the sole to be produced, a rounding knife and means for relatively actuating the pattern and knife to cause the knife to travel around the pattern.

More particularly the present invention relates to sole rounding machines of the class referred to in which the rounding knife is mounted upon a carrier movably mounted upon a support and in which the relative movement of the knife and pattern is proor the su port upon which the carrier is mounted. in the drawings accompanying this application I have illustrated my invention as embodied in a machine in which the pattern is stationary and the support 1s rotated to carry the knife around the pattern. It is to be understood, however, that while my in vention is particularly applicable to such a machine and is embodied in its preferred certain features of my invention are equally capable of embodiment in a machine in which the pattern is rotated to produce the relative movement of the knife and pattern. As to these features there- 40 fore my invention is not limited to the arrangement illustrated for producing the relative movement of the knife and pattern. In this connection I also desire to state that except as features of my invention are not limited to any particular construction or arrangement of parts.

Among the objects of my invention is to provide a sole rounding machine of the class referred to with an improved mechan ann for actuating the knife carrier constructed and arranged to so actuate the knife carrier that the knife or guide in contact with the pattern which controls the path of the knife,

follows the pattern without tending to move have invented certain new.

I do hereby declare the fol- I in shape and size can be specifically recited in the claims 4'5 the various out of contact therewith and without exertmg sufiicient pressure thereon to offer an appreciable resistance to the operation of the machine or to cause wear of the contacting parts.

Another-object of my invention is to provide a sole rounding machine of the class referred to in which patterns widely varying used without detracting from its ease and certainty of operation or the speed at which it can be successfully operated.

Other objects of my invention are to simplify and improve the construction, arrangement and mode of operation of the various parts of sole rounding machines of the class referred to with a view to rendering the actuating mechanism of such machines easier of operation and capable of being operated at a high rate. of speed and to renderi the rounding knife more certain and rehab e in operation. i

With these objects in view my invention consists in the constructions, combinations, and arr .n 'ements of parts hereinafter described anr claimed, the advantages of which will be obvious to those skilled in the art from the following description.

The sole rounding machine embodying my invention hereinafter specifically described c mprises a patternfor determining the path 0 movement of the rounding knife and a rounding knife mounted upon a carrier pivotally mounted upon a support. It also comprises means for oscillating the carrier to bring it into such a position with relation to the edge of the pattern that the pull or thrust on the knife always substantially tangential to the curve of the pattern. By so oscillating the carrier the pull or thrust on the knife does not tend to move the knife away from the pattern when passing into the curves of the shank portion or when passing around the heel and toe, and also the knife or the guide in contact with the pattern is allowed to move easily inwardly or outwardly and follows the pattern without exerting an objectionable pressure thereon. The means for oscillating the carrier which I have provided comprises a cam and connections between the cam and carrier, and those connections are so arranged that substantially the entire force exerted by the can. is: transmitted to the carrier in a direction substantially at right angles to a line correlating 'tern, thereby the inward 'mountcr r. t .o move the roundi hn' about the pattern, as such a. machine mplc and compact construction he used to out soles from strips of as well as from pi. :S of material the point about which the carrier oscillates the point at which the l orce is applied. By the of a cam. the carrier can be oseillated to cause it to assume the desired positions during the sole rounding operation and by arranging the connections between the cam and the carrier as above stated the power used in running the machine is applied to the best advantage and the machine runs easily and smoothly.

It is desirable in sole rounding machines to provide means independent of the pattern for causing the knife to travel in a path corresponding approximately to that ol" the patnnd outward movements of the knife or of the guide in contact ith the pattern due to the varying curvatures of the pattern are less in extent, the pressure of the lrniie or guide on the pattern is more uniform. and the knife or guide more es follows the pattern. To accomplish this "esult l have provided a cam. for imparting inward and outward movements the carrier, which cam cooperates with the cam and. connections hereinboforc referred to for oscillating the carrier to so actuate the carrier that the knife mounted thereon is moved in e path approximating that of the cutter knife or L and U). order to allow the the guide in Contact with the pattern to fol low the pattern I have nrovshl'y mountedthe noon the carrier and have provided .31 holding it or its guide against the have started, my invention is prefer-- embodied a, sole roundin machine in ern stationary nd the supthe carrier movehl only enough stocs; For single en 'he mechanism shove referred in such a machine, the force upon the knife to cause tdtmvel the r ttcrn always acts in a direction sub-sta tangential to the curve of the pattern so that the knife or its guide in contest with the pattern is not forced against the .tcrn in puss )2; around the heel and toe, i to produce wear i the contacting ports or oil a resistance to the operation of view similar to Fig. 3 taken on th machine. 1% so, the force exerted upon "il e does not tend to pull the knife away om. the pattern at any point in the roundoperution'end .rnorrover the oscillating wement of the carrier retards the movcnt of the knife when passing around the l sud toe of the pattern and into the curves of t 1k and thcrcbv still further ruse-s the nobility of the knife leaving the eds-pt the machine ioroperntion with mechanism for moving the cam, wnich un-j parts inward and outward movements to the: carrier, during the operation oftn'e machine,

and have provided such mechanism with means of adjustment whereby the extent of movement imparted to the cam may Delve.-

. ried to suit the size of the pattern used in the machine. The extent of movement imparted to the cam may be varied considerably without interfering with the ease of opera tion of the machine, as the cam in combination with the mechanism for oscillating the carrier will actuate the carrier to cause the rounding knife to travel in a path corresponding approximately in shape to that of the pattern. To increase the range of adjustment, however, I'preierably provide the mechanism for oscillating the carrier with means of adjustment whereby the extent of the oscillations imparted to the carrier may be varied.

My invention will be clearly understood from the drawings accompanying this application in which Figure 1 is a. view in side elevation of a sole roundin machine embodying a preferred form thereof; Fig. 2 is a. plan view of the machine illustrated in Fig. 1; Fig. 3 is a sectional plan view on the line 3-45 of Fig. l, the irmue'of the machine, the driving shaft and the mechanism for starting and stopping the same being omitted; l-i's a thelme-i l 5 1s a View similar to Fig.3

illustrating the mechanism for oscillating' the carrier upon which the rounding knife is mounted, a portion of the rotary support being broken away to show underlying parts; Fig. 6 is a detail sectional view taken on the line 66 of Fig. 3; Fig. 7 is n, detail-sectional view taken onthe line 7.7 of Fig. 3 illustrating the means for holding the rounding kni'ie against thepettern; Fig. 8 is a detail plan view illustrating a portion of the mech enism shown in Fig. 7, the top of the casing for the actuating spring being removed Fig. 2) is a detail sectional view illustrating the construction of the swiveling knife block to w rich the rounding knife Fig. 10 is a detail sectional view illustrating the adjustable connection between the slide which carries the clamp and its. actuating lever.

The frame of the machine is indicated at 1 and consists of a base portion and an overhanging portion extending upwardly from" one side of the base portion;

2 imlicutes the station sryps'ttern which is held in position by the upper ends of bolts 3 extending into hole; in the pattern, the heads of the bolts being received in .1 groove formed in the upper surfoeeol' zt block 4. lhe bolts 3 are locked in position by means oi locking nuts .5, washers 6 and '7 being interposed beis secured, and

t upon the supiort and upon t *tween the nuts and the surfaces of "the pat l the point The block 4 is rig dly l Md 8 and secured thereto is prov ided termil and blocik 4.

secured to the upper end of a cylintrical standard 8 by means of a bolt 9 passing up-- wardly through the lower end of the standard and screwing into the block. The standard 8 is provided with a llange which rests upon the upper end of the base portion ottlre machine and is securely bolted thereto. Rota tablv mounted upon the upper end of the standard 8 is a rotary table or support 10, the hub of which rests upon the hub of a stationary cam 11 also mounted upon the standby means of pins The hub of the rotary support 10 is held in position on the standard 8 by means of the hub of the cam 11 and a perforated disk or washer 13 secured to the upper end of the standard. washer 13 also serves to support the block 4 on the standard 8 byengaging a shoulder formed on the block. A. key connecting the block 4 and the washer serves as a means for eventing any rotary movement of the look. A giiide 14 is pivotally mounted ie guide 14 is mounted a nfe carrier 15 so as to slide inwardly and outwardly thereon. The rounding knife is movably mounted upon the carrier 15 as will be hereinafter described, and the arrangement of the rotary sup ort 1'0 with relation to the pattern is such t rat the knife is caused to travel around the pattern during the revolution of the support. The pivotal connection of the guide 14 with the support 10 and the sliding. connection oi the carrier 15 with the'guide 14 allows the carrier to be oscillated and moved inwardly and outwardly during the rotation of the support 10 in causing the knife to travel around the pattern.

Secured to the hub of the rotary support 11) is a bracket 17 on which is pivotally mounted a bent lever 18, one arm of which with a roll engaging a cam groove 16 in the cam 11 and the other arm of which is connected by means of a link 19 to the guide 14, a slot 20 concentric vith the pivot oi the guide 1 1 being provided in the support 10 into which a projection from the guide 14 extends to which the link 19 is secured. During the rotation of the support 10 the roll on'the lever 18 is caused to travel in the cam groove 16 and thus the lever 18, the guide 14 and the carrier 15 mounted thereon are oscillated. The force exerted by the cam is radially outward through the point oil the am n contact with the'roll, and it will be seen that the arrangement of the lever is such that this force acts substantially at right angles to the line ioining the pivot 01' the lever-and the point of contact ol' the roll. it will be seen that the link 19 is arranged substantially at right angles with the line joining the pivot of the The perforated disk or shape to that ol' the pattern.

of connection of the link 19 with the guide. Substantially the entire force exerted by the cam 16 is, therefore, utilized in moving the lever 18 and this force is transmitted to the carrier in such a manner as to act to the best advantagein oscillating the carrier.

For imparting inward and outward movements to the carrier 15 during the revolution of the support 10 a cam .21 provided with a cam groove 22 is mounted upon the block 4.

A roll 2,3 mounted upon the carrier 15 (see more particularly Fig. 6) engages the cam groove 22 and the shape of the groove is such that the desired inward and outward movements are imparted to the carrier during the revolution of the support 10. Themovements imparted to the carrier 15 by the rotation of the support 10 and by the action of the cam grooves 16 and 22 are such that the rounding knife is caused to travel in a path approximating in shape to that of the pattern 2. In der to cause the knife to move in a path exactly corresponding in shape to that of the pattern the rounding knife is movably mounted upon the carrier 15 and is yieldingly pressed against the pattern.

The construction shown in the drmvings ior movably mounting the rounding lrnilc upon the carrier 15' and the means for yieldingly holding it against the pattern are substantially the same as thosewhich have heretofore been employed in this class of. ma-

chines. As shown the rounding knife 241s secured to a holder 25 pivotally mounted in the end of an arm segmental shaped plate '27 pivotally mounted at 28 on the carrier 15. The shank of the knife bears against thcedgc of the pattern and constitutes a guide which by coo )erating with the pattern causes the kmi'o to travel in a path. corresponding exactly in A coiled spring 29 seated in a hollow boss projecting downwardly from the arm 21' and having one end connected to the arm and the other end conucctcd to the knife holder .25 tends to rotate the holder in a direction to press the cutting edge oi the hnilc towards the pattern. The plate 37 is provided with a segmental rack 30 which meshes with a pinion 31 secured to a short vertical shalt 2-32, the lower end of which is journulcd in the carrier 15 and the upper end of which is journuled in a cover plate 33 secured to a casing 34 projecting upwardly from the carrier 15. A spiral spring 35 surrounds the shaft 32 and is secured at one cud to the shell. and at the other end to the casing 34, the tendency of the spring beguide 11 and sion of the spring to move the rounding 26 rigidly secured to a.

7 the cover plate I The o ieration of the mechanism so far described 15 as follows :During the rotation of the support 10 the guide 14 is oscillated so to stand substantially normal to the curve of the pattern at all times, this result being due to the configuration of the cam groove 16 and the arrangement of the connections between the cam groove and guide.

; Also the carrier is moved inwardly and outwardly by the cam groove 22 the resultant motion of thecarrier due to the oscillatpassing around thetoe and heel.

ing movements of the guide and the inward and outward movements of the carrier being such that the rounding knife is moved in a path corresponding approximately in shape to that of the pattern. The oint of connection between the rounding linife and the carrier 15 is at 28 and it will be seen that the oscillating movements imparted to the carrier move the point 28 in such a manner that a line joining this point and the point on'the pattern at which the knife is operating. is always substantially tangential to the curve of the pattern. The pull on the knife is therefore always in a direction substantially tangential to the curve of the pattern and'does not tend to cause the knife to leave the pattern. Consequently the machine can be run at a high rate of speed without danger of pulling the knife away from the pattern in passing into the curves at the shank or in The oscillating movements of the carrier also retard the movement of the knife when entering and leaving the curves of the shank portion and when passing around the sharp curves at the heel and toe, and this action still further decreases the liability of the knife leaving the pattern at these points. It will also be seen that the oscillating movements imparted to the carrier bring the carrier into such 1. nosition that *he rounding knife is allowed to move easily inwardly and outwardly on the carrier and thus follow the pattern without exerting an objectionable pressure thereon. Since the knife is moved by the carrier in a path approximating in shape to that of the pattern the inward of the knife on the carrier are comparatively slight and thus the pressure of the knife against the pattern is maintained substantially uniform.

The mechanism above described for actuating the carrier is adapted to operate satisfactorily with patterns varying considerably in size and shape. In order to adapt the snechanis'ni for operation with patterns varying widely in size and shape I have provided mechanism having means of ad ustment for and outward movements ssaooe moving machine whereby the extent-of .the inward carrier 15 may be varied and have also pro-f vided -the mechanism for oscillating the carrier with means of adjustment whereby the extent of the oscillating movements imparted to the carrier may also be varied. to allow the cam 21 to be so moved it is mounted to slide in thedirection of the longitudinal axis of the pattern upon guideways formed on the block f1. The cam "21 is moved on its guidew'ays during the rotation of the ,support 10 by means of a circular cam 39 (see more particularly Fig. 4:) Which engages projections 40 extending downwardly from integral with a slide 41 mounted upon the support 10, the construction being such that the cam 39 is rotated with the support 10.

which a cylindrical portion of the block 4 extends. The slot 42 permits the cam 39 to be adjusted with relation to the center of the rotary support 10 to vary the extent of the movements imparted to the cam 21. slide 41 is arranged to slide through a guide a handle 44 by means of which it may be actuated to change the position of the cam 39. The cam and slide are held in adjusted position by means of a locking pin 45 which engages notches formed in the slide. The cam 39 can-be so adjusted as not to move the cam 21 during the revolution of the support 10 or it may be so adjusted as to increase or diminish the extent of'the outward movements imparted to the carrier. In order to adjust the extent of the oscillating movements imparted to the carrier the arm of the lever 18 to which the link 19 is connected is provided withv a slot in which the end of the link may be adjustednearer to or farther from the pivot of the lever. This construction is clearly shown in Fig. 5. The mechanism for actuating the knife carrier may be adapted for operation with patterns of for moving the cam 21 or oscillating the carrier. It is preferable, however, to adjust both of these'mechaning widely in size.

The material to be operated upon is held upon the pattern 2 during the rounding operation by means of a clamp 46 carried by a block 47 secured to the lower end of a slide 48' mounted in the overhanging portion of the machine frame. to one arm'of a lever 49, the other arnf. of which is engaged by a rod 50 connected to a foot treadle 51 the construction being suethat a depression of the foot treadl eraetuates the slide {18 tqfforce the clamp towards the pattern. Thrffi'clamp is raised from the patand outward movements imparted to the In order the cam and which is secured to or formed The 13 upon the support 10 and is provided with isms when it is desired to use patterns vary-- The slide 48 is connected:

the cam 21 during the operation of the The cam 39 is provided with a slot 42 through diflerent sizes by'adjusting either the mechanism the mechanism for 'sss,eoe

tern by means of a coiled spring 52 connected at one end to the lever 49 and at the other end to the trams of the machine. lo vary the extent of movement imparted to the clamp by its actuating mechanism an adjustable connection provided between the slide 48 and the le er 49. This adjustable connection is illustrated in detail in Fig. l and consists of a rod 53 provided with right and left screw-threads having a screw-threaded engagement with pins or blocks 54 and 55 pivotally mounted on the lever and slide.

The rotary support 10 is actuated from a driving shaft journaled in a bracket secured to the frame of the machine, by means of a bevel gear mounted on the inner end of the driving shaft which meshes with a series of bevel gear teeth formed on the lower surface of the table as is clearly illustrated in Fig. l.

The stop mechanism illustrated in Fig. 1 is not illustrated in detail and described herein as it forms no part of my present invention but constitutes the subject-matter of my application, Serial No. 130,385, filed of even date herewith.

Having thus indicated the nature and scope of my invention and having specifically described a preferred form thereof, I claim as new and desire to secure by Letters Patent 1. A sole rounding machine, having, in

combination, a pattern, a rotary support, a

carrier mounted to move inwardly and outwardly thereon, a rounding knife mounted on the carrier, and means for actuating the carrier to maintain theTdirection of the inward and outward movements of the carrier substantially normal to the curves of the pattern throughout the entire rounding operation, substantially as described.

2. A sole rounding machine, having, in combination, a pattern, a rotary support, a carrier having a pivotal connection therewith located entirely outside of the pattern, a rounding knife mounted on the carrier, a cam for oscillating the carrier about said pivotal connection and connections between the cam and carrier acting to transmit substantially the entire force exerted by the cam to the carrier in a direction substantially at right angles to a line joining the. oint about which the carrier oscillates am the point at which the force is applied, substantially as described. i

3. A sole rounding machine, having, in combination, a pattern, a rotary support, a carrier having a )ivotal connection therewith located entire y outside of the pattern, a rounding knife mounted on the carrier, a cam for oscillating the carrier about said pivotal connection, a lever pivotally mounted upon the rotary support, and connections between the lever and the cam, and between the lever and the carrier, substantially as described.

A sole rounding machine, having, in combination, a pattern, a rotary support, a carrier having a pivotal connection therewith located entirely outside of the pattern, a rounding knife mounted on the carrier, a cam for oscillating the carrier about said pivotal connection, and mechanism intermediate the cam and carrier mounted upon the rotar support and acting to transmit substantiall the entire force exerted by the cam to 1; 1e carrier in a direction substantially at right angles to a line joining the oint about which the carrier oscillates an the point at which the force is applied, substantially as described.

5. A sole rounding machine, combination, a pattern, a rotary support, a carrier having a pivotal connection there with located entirely outside of the pattern, a rounding knife mounted on the carrier, and means for oscillating the carrier about said pivotal connection comprising a cam and mechanism intermediate the cam and the carrier mounted on the rotary support, substantially as described.

6. A sole rounding machine, having, in combination, a pattern, a rotary support, a, carrier mounted to move inwardly and outwardly on said support and to move to change its angular position thereon, a rounding knife movably mounted on said carrier,, means for pressing the knife towards the pattern, a cam for imparting inward and outward. movements to the carrier, and means separate from the cam having provision for a justment for moving the carrier to change its angular position on the rotary support, substantially as described.

7. A sole rounding machine, having, in combination, a pattern, a rotary support, a carrier mounted to move inwardly andoutwardly on said support and to move to change its angular position thereon, a rounding knife movably mounted on said carrier, means for pressing the knife towards the pattern, a cam directly engaging the carrier acting to impart inward and outward movements thereto, and means separate from the cam for moving the carrier to change itsangular position on the rotary support, substantially as described.

8. A sole rounding machine, having, in combination, a pattern, a rotary support, a guide pivotally mounted upon the rotary su ort, a carrier mounted to slide on said guide, a rounding knife movably mounted on said carrier, meansfor towards the pattern, acam acting to move the carrier on the guide, and means separate from the cam for oscillating the guide, substantially as described. 7

9. A sole rounding machine, having, in combination, a'pattern, a rotary support, a

guide pivotally mounted upon the rotary support, a carrier mounted to slide on-said having, in

pressing the knife t. combination, a pattern, a rotary guide, a rounding knife movably mountedon said carrier, means tor pressing the knife towards the pattern, a cam acting to move the carrier on the guide, and. means for oscillating the guide com prising a lever mounted tern, a cam for imparting inward and out--.

ward movements to the carrier, a cam for oscillating the carrier, and connections between said cam and the carrier acting to transmit substantially the. entire. force exerted by the camto the carrier in a direction substantially at right angles to a line joining the point about which the carrier oscillates and the point at which the force is applied, substantially as described.

11. A sole rounding machine, having, in a combination, a pattern, a rotary support, a guide pivotally mounted upon the rotary 'sup ort, a carrier mounted. to slide on said gun e, a rounding knife movably mounted on said carrier, means l or pressing the knife towards the pattern, a cam, acting to move the carrier on .the guide and means for oscillating the guide comprisirw a cam and connections between the cam am. guide, substantially as described 12. A sole rounding machine, having, in combination, a pattern, a rotary support,'a carrier mounted to move inwardly and outwardly on said support and to move to change its angular position thereon, a rounding knil'e movably mounted on said carrier, means for pressing the knife towards the pattern, a cam directly engaging the carrier acting to impart inward and outward movements thereto, and means for moving the carrier to change its angular position on the rotary support comprising a cam and connections between the cam and carrier, substantially as described.

13. A sole rounding machine, having, in

. combination, a pattern, a rotary support, a

carrier mounted to move inwardly and out- 'wardly on said support and to oscillate to change its angular position thereon, a round- 1 carrier,

ing knife movably mounted on said means for pressing the knife towards the pattern, a cam for imparting inward and outward movements to the carrier, and means for oscillating the carrier comprising a cam and the support,

and connections between the cam substantially as described.

14. A sole rounding maclnne,. having, in combination, a pattern, a rotary support, a

season carrier mounted to move inwardly and out" l 'Wardly on said support and to nove to change 5 its angular position thereon, a rounding knife movably mounted on said carrier, means for t pressing the knife towards the pattern, cam

for imparting inward and outward more To ments to the carrier, niecl -misrn he .1

vision for adjustment a a to shift said cam during r e operal machine. and. means for moving 1 to change its angular position on support comprising a cam mounted pendently of said first-mentioned caan.

connections between the cam and the substantially as described.

sole roundingmachine,

15. A having combination, a pattern, a rotar support, a carrier mounted to move inwardly ainl outl wardi on said support and to oscillate to change its angular position thereon, rounding knil'e movably mounted on said carrier, means for pressing the knife towards the pattern, a cam for imparting inward and outward movements to the carrier, mecluinism having )rovision for, adjustment acting utoma-tically to shift said cam during the operation of the machine, and means For oscillating the-carrier compr sing a cam and mechanism intermediate the cam and the. carrier mounted upon the rotary support, substantially as described.

16. A sole rounding mach ne, having, in combination, a pattern, a rotary support, a carrier mounted to move inwardly and out.- wardly on said support and to move to change its angular position thereon, a rounding knife movably mounted on said carrier, means for pressing the-knife towards the pattern, a. cam for imparting inward and outward movements to the carrier, means separate from the cam for moving the carrier to change its angular position on the rotary support and mechanism having provision for mljustirent acting automatically to shift the cam during the operation of the machine, substantially as described.

l7, A solo rounding machine, having, in combination, a pattern and a support mounted for relative rotary movement, a carrier mounted to moveinwardly and outl wardly on said support and to move to ing knife movably mounted on said carrier, l means i'or pressing the knife towards the odtward movements to the carrier, and means separate from the cam havmg pr'ti vision for ad ustment tor moving the carrier 1 support, substantially as described.

A sole rounding machine, having, in f combination, a pattern and a support 3, mounted for relative rotar'y movement, a l carrier mounted to move inwardly and out change its angular position thereon. a round pattern, a, cam for imparting inward and" to change its ai'igular position on the rotary mounted for relative rotary movement, a

carrier mounted to move inwardly and outwardly on said support and to move to change its angular position thereon, a rounding knife movably mounted on said carrier,

means for pressing the knife towards the pattern, a cam directly engaging the carrier acting to impart inward and outward movements thereto, and means separate from the cam for moving the carrier to change its angular position on the support, substantially as described.

20. A sole rounding machine, having, in combination, a pattern and a support mounted forrelative rotary movement, a

7 guide pivotally mounted upon said sup ort,

a carrier mounted to slide on said guic e, a

rounding knife movably mounted on said carrier, means for pressing the knife towards the pattern, a cam acting to move the carrier on the guide, and means sc )arate from the cam for oscillating the guide, substantially as described.

21. A sole rounding machine. having, in combination, a pattern and a support mounted for relative rotary movement, a guide pivotally mounted upon said support, a carrier mounted to slide on said guide, a rounding knife mounted on said carrier, means for pressing the knife l owards the pat tern, a cam acting to move the carrier on the guide and means for oscillating the guide comprising a lever mounted on said support, a cam engaging the lever and a link connecting the lover and guide, substantially as described.

22. A sole rounding machine, having, in combination, a pattern and a support mounted for relative rotary movement, a carrier mounted to move inwardly and outwardly on said support and to oscillate to change its angular position thereon, a rounding knife movably mounted on said carrier, means for pressing the knife towards the pattern, a cam forimparting inward and out ward movements to the carrier, and means for oscillating the carrier comprising a cam and connections between the cam and the carrier acting to transmit substantially the entire force exerted by the cam to the carrier .in a direction substantially at right angles to movably mounted on said carrier, means for pressing the knife towards the pattern, a cam for imparting inward and outward movements to the carrier, mechanism having provision for adjustment acting :mtomatically to shift said cam during the operationof the machine, and means for moving the carrier to change its angular position on the support comprising a cam mounted imlepeinlentlv of said first-mentioned cam and connections between said cam and the carrier, substantially as described.

24. A sole rounding machine, having, in combination, a knife carrier and a pattern relatively movable to carry the knife carrier around the pattern, and means including two cams for controlling the position of said carrier, one of said cams being movable during said relative movement, substantially as described.

25. A sole rounding machine, having, in combination, a knife carrier, at rotary support therefor, means for controlling the position of said carrier on the rotary support, said means including two cams one of which is movable during the rotation of said support, and means for adjusting the tpnt of movement. of the movable cam, fistantially as described.

26. A sole rounding machine, having, in combination, a pattern, a knife carrier movable about the pattern, a cam for imparting inward and outward movements to toe car-- rier, said cam being movable during the normal operation of the machine and being adustable to vary such movement according to varying sizes of atterns, and a second cam,

for imparting ar ditional movements to the carrier, substantially as described.

- 27. A sole rounding machine, having, in combination, a pattern, a clamp, a slide for actuating the same, a lever for actuating the slide, blocks pivotally mounted on the lever and slide and a connecting link provided with right and left threads engaging corrcs 0ndiin screw threaded apertures in said bocks, substantially as described.

28. A sole rounding machine, having, in combination, a knife carrier and a pattern mounted for relative movement, a movable cam for imparting inward and outward movements to the carrier during such relative movement, and means for moving the carm scenes riei' during such relative movement to change 1 the carrier about said pivotal connection durits "angular position, substantially as deing the rounding operation, substantially as scribed; j described: I 29. Asole rounding machine,\heving, in In testimony whereof I efiix my signature, '5 combination, a pattern, a rotary support, at in pi esence of two witnesses.

wknife a'rrier having a ivotal connection ther'ewith'looeted entirely outside of thepat- BENJAMIN O? te 'n ecam and mechanlsm comprising c-on- Witnesses: nections movable with relation to thecer- FRED O. FIsH, 10 rier and actuated by the cam for oscillating HORACE VAN EVEREN',

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