US1373404A

US1373404A - Sole-rounding machine

Info

Publication number: US1373404A
Application number: US59655A
Authority: US
Inventors: Charles C Blake
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-11-04
Filing date: 1915-11-04
Publication date: 1921-04-05
Anticipated expiration: 1938-04-05

Description

C. C. BLAKE.

I SOLE nouwoms momma.

APPLICATION FILED NOV-4, I9|5. 1 $?,%4 v Patented Apr. 5, 1921.

5 SHEETS-SHEET I.

C. C. BLAKE.

SOLE ROUNDING MACHINE.

APPLICATION FILED NOV. 4, 19]?)- 1,3?3gfl4k Paten Apr. 5, 1921.

5 SHEETS-SHEET 2- ammaaynnmm v c. c. BLAKE. SOLE ROUNDING MACHINE.

APPLICATION FILED NOV. 4,191-5.

L 2 9 3 1 T 9 E 5 H A r P m A n H s m 5. m aw D1 llLllllllllq l lv l w I v llllllll INHHAL lllllillilll lllllu n n .ll lllll lL 4 Q Au 0 C. C. BLAKE. SOLE ROUNDING MACHINE.

APPLICATION FILED NOV. 4, m5.

1 ?3 44 Patented Apr. 5, 1921.

5 SHEETS-SHEET 4.

C. C. BLAKE.

SOLE ROUNDING MACHINE.

APPLICATION FILED NOV. 4, 1915.

1L 3?8,%% Patented Apr. 5, 1921.

5 SHEETSSHEET 5.

S CrBLAKE, 0F BROOKLINE, MASSACHUSETTS.

SOLE-ROUNDING rancmivn- Specification of Letters Patent.

Application filed November 4, 1915. Serial No. 59,655.

To all whom it may concern:

Be it known that 1, CHARLES C. BLAKE, a citizen of the United States, residing at Brookline, in the county of Norfolk and State of Massachusetts, have invented a new and useful Improvement in Sole-Rounding Machines, of which the following is a specification.

The present invention relates to machines for use in the manufacture of lasts and shoes, and more particularly to sole rounding machines.

Heretoforein preparing soles for the shoe bottoming operations it has been the practice to roughly die out the soles and then br ng them to the required shape in a rounding machine before they are secured to the bottom of the last. With this method variations occur in the sole which prevent its pro erlfitting to the last bottom. This d1 culty caused the development of a machine called an insole heel-seat trimming machine for trimming theheel seat of a rounded insole after it had been secured to the last. I propose to prevent the development of variations in the sole by securing the roughly died out sole to the bottom of the last and then trimming the sole to the edge of the last bottom while secured thereon. This method produces a good fitting sole and eliminates one operation in the manufacture of shoes.

One object of the present invention is to produce a machinefor trimming the roughly died out sole attached to the last bottom to the edge thereof. I

To the accomplishment of this object a feature of the invention contemplates the provision, in a rounding machine, of a work support comprising a last having its bottom separated from its upper-shaping surface by an abrupt shoulder and havlng a roughly died out sole attached thereto, a cutter, and means for relatively actuating the support and cutter to trim the edge of the sole around the last to the edge of the last bottom.

Broadly considered the cutter employed to trim the roughly died sole to the edge of the last bottom may take any form and may operate in any manner found desirable or expedient. Preferably the cutter is mounted to operate in an oblique plane in order that the cut edge of the sole may be formed normal to the face thereof. The cutting edge of the cutter is preferably U-shaped in. order to facilitate its travel around the reverse curves of the work. I

It has been proposed heretofore to provide automatic shoe machines with leaders which support the work and which are actuated longitudinally to transfer the point of operation of the tool around the work and which are swung laterally during their feed longitudinally to maintain the edge of the work in proxlmity to the operating oint in the line of feed. The mechanism f dr swinging the leader laterally comprises a roll for engaglng the inside face of the flange and a pair of rolls for engaging the outside face of the flange, The pair of rolls are mounted upon a slide directly connected to a sprin which provides the tension for holding the rolls against the outside face of the flange. Theoretically it was supposed that the three point contact of the guide rolls of this mechanism would uniformly engage the guiding flange throughout the engagement of the rolls with the flange and thereby constantly swing the leader laterall about a fixed axis durin longitudinally. n practice, however, it is found that owing to the direct connection of the spring hereinbefore referred to with the slide carrying the rolls which engage the outside face of the guiding flange that the tension of the spring varies during the traverse of the rolls around the flange in such a manner that the three-point contact of the rolls with the flange is interrupted thereby causing a slight variation in the axis about which the work. swings.

A further object of the invention is to provide an automatic shoe machine of the loader type with mechanism for insuring the swinging of the leader laterally about a fixed axis during its feed longitudinally.

Accordingly a further feature of the pres ent invention contemplates the provision in a shoe machine provided with an operating I Patented Apr. 5, 1921.,

the feed of t e leader 1 tool, a work supporting jack, a leader conconsidered the fixed axis about which the leader swings may or may not coincide with the point of operation of the tool. In some of the operations on a shoe and parts thereof or on devices for use in the manufacture therein the fixed axis will coincide with the point of operation of the tool and in some other operation the point of operation of the tool Wlll not coincide with the fixed axils about which the leader swings. In certain other operations it may be desirable for the point of operation of the tool to coincide with the fixed axis about which the leader swings for only a part of its travel around the work.

Accordingly another feature of the present invention contemplates the provision in v a shoe machine provided with an operating tool, a work support, a leader connected there to, and mechanism for actuating the leader to transfer the point of operation of the tool around the work, of mechanism for swinging the leader durin a predetermined part of its travel around t e work aboutan axis passing through the polnt of operatlon of the tool and mechanism for relatively shifting the tool and leader during another part of the travel of the tool around the work to remove the point of operation of the tool from the axis about which the leader swings.

In its broadest aspects the invention contemplates either shifting the leader or the tool, or both, to remove the point of operation of the tool from the axis about which the leader swings. It is preferred, however, to swing the leader about a fixed axis and to shift the tool at the proper time to remove its point of operation from proximity to the axis about which the leader swings.

The mechanism for insuring the swinging of the leader laterally about a fixed axis during its feed longitudinally may take any form found desirable or expedient. It is preferred, however, to employ the threepoint contact guiding devices of the prior art and to provide mechanism for insuring the constant three-point contact of these guiding devices throughout their traverse of the guiding flange on the leader.

In addition to the features of the invention above referred to other features of the invention consist in certain devices, combinations and arrangements of parts fully set forth hereinafter, the advantages of which will be readily understood by those skilled in the art.

The various features of the present invention will be best understood by an inspection of the accompanying drawings illustrating the best form of the invention at present devised, in which,

Figure 1 is a side elevation of an insole rounding machine;

Fig. 2 is a sectional elevation;

Fig. 3 is a detail in plant of the devices for supporting, guiding and feeding the leader;

Fig. 4 is a detail in plan of the mechanism beneath the platen;

Fig. 5 is a detail in sectional elevation looking toward the right, Fig. 3;

Fig. 6 is a diagrammatic plan illustratin the relation between the edge of the rounded insole and the guidin flange on the leader;

Fig. 7 is an elevation of the last having the insole attached thereto;

Fig. 8 is a detail showing the cam surface on the leader at the toe thereof;

Fig. 9 is a sectional detail of the leader at the side thereof;

Fig. 10 is a perspective of the U-shaped cutter; and

Fig. 11 is a detail in perspective showing the locking'devices for the cutter head.

, An insole 1 is first secured to a last 2 by the method disclosed in ap lication for Letters Patent of the United tates'lfiled by me September 16, 1915, Serial No. 251,099. In accordance with this method a sheet of gauze saturated with hot paraffin is placed 'on the last bottom and then a roughlydied out insole is placed in position over the sheet .of gauze and is subjected to pressure to join the insole to the last bottom. In the illustrated embodiment of the invention thel'ast 2 is provided with a vertical ledge or shoulder 3 at the juncture of the edge of the bottom of the last with the top face thereof. This shoulder 3 extends around the forepart of the last from the breast line on one side to the breast line on the other.

. If the last is to be used in the manufacture of shoes .which are sewn around the heel seats the shoulder 3 will extend around the entire peripheral edge of the last bottom.

The last 2 having the roughly died out insole thereon is jacked upon the saddle 4 (Figs. 1 and 2) and spindle 5 of a work support 6 which is provided with runners 7 (Figs. 1 and 2) arranged to slide over a platen 8' secured to a bracket 9 mounted on a column 10. The work support 6 is secured to a pattern plate or leader 11 (Fig. 3) provided with a guiding flange .12 (Fig. 9). The term leader is in common use in the metal and wood turning and cutting arts to describe a pattern plate having substantially the form of the finished work for controlling the operative position of the work and the operating tools. As the present inventor has devised a system of machines for automatically making the pattern plate 11, the several machines of which are related to widely different arts, it-is thought advisable to employ the word leader as the standard term rather than the term pattern plate. As shown in Fig. 6 the projections of the edge of the bottom of the last at the sides thereof upon the plane of the leader coincide with the inside face of the guiding flange.

At the toe the projections of the edge of the last bottom upon the plane of the leader fall within the guiding flange. This variation at the toe of the leader is for the accommodation of the toe-box which in a subsequent operation will. be applied to the toe end of the insole. When the upperhaving the toe-box within it is lasted to the edge of the insole in accordance with the method of lasting practised by me the projections of the free edge of the upper upon the plane of the leader will coincide with the inside face of the guiding flange throughout its length. Stated in another way, the projections upon the plane ofthe leader of the outside edge of the toe-box secured in position on the toe of the sole will coincide with the guiding flange at the toe of the leader.

The leader is actuated to transfer the point of operation of the tool around the insole by a gear 13 (Figs. 2 and 3) which en-, gages rack teeth 14 (Figs. 3 and 8) formed on the exterior face of the guiding flange 12. The gear 13 is secured to the upper end of a vertical shaft 15 which is driven from a horizontal shaft 16 through a worm 17 on the shaft 16 which .meshes with a Worm wheel 18 on the shaft 15. The shaft 16 loosely carries a pulley 19 which is driven from a motor 20, mounted on the base of the column 10, through a belt 21. The pulley 19 is provided with a clutch member which is arranged-to be engaged by a complemental clutch member 22 splined on the shaft 16. In order to shift the clutch member 22 on the shaft 16 and thus clutch the pulley 19 to the shaft the clutch member 22 is provided with a peripheral groove 23 which is engaged by a pair of blocks 24 carried by the vertical arm of a bell crank lever 25 pivoted on the column 10; The horizontal arm of the bell crank lever 25 is pivoted to the upper end of a rod 26 which is connected at its lower end to a treadle 27. With this construction pressure on the treadle slides the clutch member 22 on the shaft 16 into engagement with the pulley 19 and thus clutches the shaft 16 to the source of power. The clutch member 22 is normally held'away from the pulley 19 by a spring 28 one end of which is connected to v the vertical arm of the bell crank lever 25 and the other end of which the column 10.

In order to swing the jack laterally as the point of operation of the tool is transferred is connected to around the insole to maintain the edge of the last bottom in proximity to the tool in the line of feed the guiding flange 12 on the handle 41 by means of which the slide 37 may be actuated to cause the cam slot 35 to act upon the roll 34 and press the guide pin 29 below the guiding flange 12 and also below the surface of the platen 8. The guide pin 29 is eccentrically mounted on the rod 32 to permit it to traverse the short curve at the toe of the leader. The guide pin is made semi-circular in the manner illustrated in Fig. 4 to avoid all danger of interference with the devices for securing the work support to the leader.

. In order to hold the leader down upon the platen the exterior face of the flange at the u per end thereof is beveled as shown at 42 igs. 5, 8 and 9). This beveled surface is engaged by the frustoconical guide rolls 30 and 31. With this construction the

guides

29, 30 and 31 have a three-point contact with the guiding flange and thus act to swing the work laterally during its feed. The axis about which the work swings passes substantially through the point of operation of the tool. At least, the axis about which the leader swings passes through the-point of operation of the tool during the traverse of the tool along the sides of the insole. In order to enable the rolls 30 and 31 to engage the flange at all times without binding as they traverse the reverse curves of the flange at the shank and around the "toethe guide rolls 30 and 31 are journaled in a slide 43 (F igs. 4 and 5) mounted to slide in a guide-way 44 formed in the bracket 9. The rolls 30 and 31 are actuated in a direction to press them against the flange 12 by means of a spring 45 (Fig. 4). Ithas been proposed heretofore to connect the spring 45 directly to the slide 43. With this construction it was found that the pressure is decreased during the traverse of the rolls along a convex surface such as at the toe of the leader and that the pressure is increased during the traverse of the rolls along a concave surface such as at the shank of the I'leader. Owing to the great are through which it is necessary to swing the heavy leader and jack supported thereby during. the traverse of the rolls around the toe it is found that with the construction re ferred to great pressure is brought to bear upon the rolls during their traverse of the toe. As the spring is pressing the rolls against the leader during their traverse of the toe with its minimum pressure there is a tendency for the leader to move away from one of the rolls and thus interrupt the desirable three-point contact of the guides with the flange. The increase in pressure during the traverse of the rolls along the concave curves at the shank of the leader is also objectionable as the friction developed acts as a drag on the driving mechanism for the leader. In order to maintain the threepoint contact of the guides throughout their engagement with the flange the spring 45, instead of being directly connected to the slide 43, is connected to the slide through a lever 46 (Figs. 3 and 4). This lever is arranged to vary its leverage inversely to variations in the tension on the spring. That is, the pressure on the rolls 30 and 31 is increased during their traverse of the toe of the leader and is decreased during their traverse along the shank of the leader. It must be understood, however, that the inverse transmission of the pressure of the spring by the lever 46 does not result in a uniform pressure of the guides on the guiding flange of the leader. The pressure of the guides on the guiding flange is greater at the toe of the leader than at the shank. By increasing the pressure on the rolls during their traverse of the toe the leader is prevented from moving away from one of the rolls thus insuring the constant threepoint contact of the guide rolls with the guiding flange. As the leverage of the swinging work is neutralized during the traverse of the rolls along the shank of the leader the pressure on the rolls may be safely decreased during their traverse of the shank in order to reduce their friction to a minimum. If an attempt were made to maintain a uniform pressure on the rolls 30 and 31 during their entire traverse of the leader the spring pressure required to hold the rolls 30 and 31 properly against the leader during their traverse of the toe would develop such friction during the traverse of the rolls along the shank of the leader as to interfere with the proper drive of the leader. The lever 46 is pivoted at one end to the bracket 9. At its other end the lever is pivoted to a block 47 (Figs. 3 and 4) which loosely receives a rod 48 pivoted to an extension of the bracket. The spring 45 is coiled around the rod 48 and is interposed between the block 47 and a shoulder 49 on the rod. The lever 46 is pivoted intermediate its end by a short link 50 to the slide 43.

From an inspection of Figs. 3 and 4 it will be readily seen that the link 50 is connected to a rigid arm, that is, an arm not compressible longitudinally, of a toggle the other arm of which is yielding. With this construction the pressure of the rolls on the leader is at its minimum when the toggle approaches its made position and is at its maximum when the toggle approaches its broken position. As the slide is positioned farther to the rlght during the traverse of the rolls around the toe of the leader than during the traverse of the rolls along the,

shank of the leader it will be obvious that with the improved construction referred to the pressure p f the rolls is increased during their traverse of the toe of the leader and is decreased during their traverse along the shank of the leader. The im roved con struction consequently insures t e enga ement of the three guides 29, 30 and 31 with the guiding flange at all times during their traverse thereof. While the rigid arm of the toggle as shown in the illustrated embodiment of the invention is a lever of the second order it will be readily understood by those skilled in the art that levers of other orders may comprise the rigid arm of the to gle.

o withdraw the guide rolls 30 and 31 from the guiding flange 12 at the same time that the guiding in 29 is withdrawn therefrom the slide 3 is provided with a cam slot 51 (Figs. 3 and 4) which embraces a roll 52 carried by the slide 43. With this construction a downward movement of the handle 41 vsimultaneously depresses the guidepin 29 and withdraws the guide rolls 30 and 31 from the flange 12. It will be noticed from an inspection of Figs. 3 and 4 that the cam slot 51 is wide enough to. permit the roll 52 to move loosely therein when the guide rolls 30 and 31 yleld to the curves of the leader. In order to hold the slide 36 in a normal operative position with the handle 41 elevated the arm 38 is pivoted to a rod 53 which passes loosely through a lug 54011 the column 10. Interposed between the lug 54 and a shoulder 55 on the rod is a spring 56 which is coiled around the rod. The movement of the slide 37 is limited in both directions by a pair of pins 57 and 58 (Fig. 4) arranged to alternately engage the opposite sides of the bracket 9.

The tool for trimming the roughly dried out insole to the edge of the last bottom consists of a U-shaped knife 59 (Fig. 10). The curvature of the cutting edge of the knife 59 has a smaller radius than any curvature around the work. The knife 59 is formed on the end of a knife block 60 which is mounted to reciprocate in ways 61 formed in a cutter head 62. The head 62 is pivoted at 63 .on a vertical slide 64 carried by a horizontal slide 65. The slide 64 is counterbalanced by a weight 66. By embodying a shoulder on the last 2 the sole may be trimmed to the edge of the last bottom around the forepart thereof from one breast corner to the other without injury thereto as the shoulder permits the knife to pass completely through the sole and yet clear the surface of the last. The shoulder may be safely terminated at the breast corners when the sole is trimmed in the machine of the drawings owing to the fact that the line of out is automatically controlled by' the leader to coincide with the edge of the nailclenching plate on the heel seat. The knife is thus caused to pass through the sole just outside of the nailclenching plate thereby trimming the sole to the edge of the last bottom without contacting therewith.

The tool 59 is rapidly reciprocated during the operation of the machine by a motor 67 mounted on the cutter head 62. The shaft 68 of the motor'is provided with a crank 69 which is connected to the block 61 by a link 70. During the transfer of the point of operation of the tool around the sole the cutter head 62 rises and falls in accordance with the various slopes on the sole. To this end the head 62 carries a frusto-conical roll 71 which is arranged with its broader base directed toward the cutter 59 and is mounted to travel over the sole within the line of cut. As shown in Figs. 1 and 2 the cutter 59 reciprocates in an oblique plane in order that the cut edge of the sole on the curved last bottom may be formed normal to the face thereof.

The cutter head 62 may be swung about its axis 63 to bring the cutter 59 into or out of operative position. In order to lock the cutter head 62 with the cutter in its operative position the slide 64 is provided with a central recess 72 (Fig. 11) which is engaged by a dog 73 secured to a rock shaft 74 journa-led in the head 62. The rock shaft 74 carries a handle 75 by means of which the operative may remove the dog 73 from the recess 72 when it is desired to turn the head 62 about its axis 63. With this construction the locking devices for the head 62 are operative only when the cutter is in a central position.

The cutter 59 reciprocates in a plane 111-" tersecting the ed e of the last bottom at the sides thereof. fn order to maintain the plane of the knife intersecting the edge of the last bottom during its transfer around the toe of the sole notwithstanding the toebox variation hereinbefore referred to the slide 65 is rovided with a feeler or cam fol lower 76 igs. 2 and 3), interposed between the rolls 30 and 31, which engages the bevel 42 on the outside face of the guiding flange. The feeler 76 is pressed against the bevel 42 by a coiled spring 77 one end of which is' connected to a bracket 78 depending from the slide 65 and the other end of which is connected to the bracket 9. The bevel 4:2

\Vhile the invention has been illustrated 'and described in connection with a sole rounding machine it will be apparent to those skilled in the art .that the features of the invention may be advantageously employed in performing other operations in the manufacture of shoes and parts thereof and particularly in the manufacture of lasts for determining the shape of the last toms.

class of machines and with the general objects of the present invention in view that changes may be made in the details of structure, the described and illustrated embodiment thereof being. intended'as an exploitation of its underlying essentials the features whereof are definitely stated in their true scope in'the claims hereto appended.

What is claimed as new, is 2- 1. An insole rounding machine, having, in combination, a work support for a last having its bottom separated from its uppershaping surface by an abrupt shoulder and having a roughly died out insole attached thereto, a cutter, and means for relatively actuating the support and cutter to trim the edge of the insole around the last to the edge of the last bottom, substantially as described. v

2. An insole roundingmachine, having, in combination, a platen having its supporting surface in a horizontal plane; a work support, for a last having its bottom separated from its upper-shaping surface by an abrupt bot- It will be clear to those skilled in this shoulderand having a roughly died out insole attached thereto, mounted on the supporting surface of the platen; a cutter operating in a plane oblique to the supporting surface of the platen; and means for relatively actuating the support and cutter to trim the edge of the insole around the last to the edge of the last bottom, substantially as described.

3. An insole rounding machine, having, in combination, a support for a last having-an insole attached thereto, a leader carried by the support and having a guiding flange one face of which coincides with the projections of the edge of the last bottom upon the plane of the leader except at the toe of the leader where there is a slight variation, a cutter normally operating in a plane intersecting the edge of the last bottom at the Sides thereof, means for relatively actuating the tea . tion of the cutter. intersecting the edge of the last bottom, substantialy as described.

4. An insole rounding machine, having, in.

combination, a support for a last having an insole attached thereto, a leader carried by the support and having a guiding flange one\ face of which coincides with the projections of the edge of the last bottom upon the plane of the leader except at the toe of'the leader Where the said projections fall within the guiding flange, a cutter normally operating in a plane intersecting the edge of the last' bottom at the sides thereof, means for relatively actuating the cutter and leader to transfer the point of operation of the cutter around the insole, and means for relatively shifting the cutter and support during the transfer of the point of operation of the cutter around the toe to compensate for. the variation at the toe of the leader and maintain the plane of operation of the cutter intersecting the edge of the last bottom, substantially as described.

5. An insole rounding machine, having, in combination, a support for a last having an insole attached thereto, a leader carried by the support and having a guiding flange one face of which coincides with the projections of the edge of the last bottom upon the plane of the leader except at the toe of the leader where there is a slight variation, a cutter normally operating in a plane intersecting the edge of the last bottom at the sides thereof, means for actuating the'leader to transfer the point of operation of the cutter around the insole, and means for shifting the cutter during its transfer around the toe of the insole to compensate for the variation at the toe of the leader and maintain the plane of operation of the cutter intersecting the edge of the last bottom, substantially as described.

6. An insole rounding machine, having, in combination, a support for a last having an insole attached thereto, a leader carried by the support and having a guiding flange one face of which coincides with the projections of the edge of the bottom of the last upon the plane of the leader except at the toe of the leader where there is a slight variation,

a cutter normally operating in a plane in tersecting the edge of the last bottom at the sides thereof, a movable support for the cutter, a feeler carried thereby, means for pressing the feeler against the leader, means for actuating the leader to transfer the point of operation of the cutter around the insole, an m ans on the ad r for a tuat ng h feeler to shift the cutter to compensate for the variation at the toe of the leader and maintain the plane of operation of the cutter intersecting the edge of the last bottom, substantially as described.

7. A machine of the class described, having, in combination, a work support, aleader carried .thereby provided with a guiding flange, acutter mounted to cut the work at the sides thereof on a line the projections of which upon the plane of the leader coincide with one face of the guiding flange at the sides of the leader, means for relat vely actuating the support and cutter to transfer thepoint of operation of the cutter along the sides and around the toe of the work, and means for relatively shifting the support and cutter during the transfer of the point of operation of the cutter around the toe-of the work to cut the work on a line the projections of which upon the plane of the leader lie within the guiding flange, substantially as described.

8. A machine of the class described, having, in combination, a work support, a leader -=the leader to transfer the point of operation of the cutter along the sides and around the toe of the work, and means for relatively shifting the support and'cutter during the transfer of the point of operation of the cutter around the toe of the work to cut the work-on a line the projections of which upon the plane of the leader lie within the guiding flange, substantially as described.

9. A machine of the class described, having in combination, a Work support, a leader carried thereby provided with a guiding flange, a cutter mounted to cut the work at the sides thereof on a line the projections of which upon the plane of the leader coincide with one face of the guiding flange at the sides of the leader, means for actuating the leader to transfer the point of operation of the cutter along the sides and around the toe of the work, and means for shifting the cutter during its transfer aroundthestoe. of.

shaping surface by an abrupt shoulder and having a roughly died out insole attached thereto, means for trimming the insole to the edge of the last bottom, feeding means, and mechanism for changing the relative position of the operating means and co- 13' operating with the feed to present the insole properly to the operating means as its point of operation is transferred around the insole, substantially as described.

11. A machine of the class described, having, in combination, a work support, a leader carried thereby providedupon one face with.

a guiding flange and upon the opposite face with a bevel, a cutter mounted to out the work at the sides thereof on a line the projections of which upon the plane of the bination, a cutter, a support therefor mov-- able about a vertical axis, and means for locking the support operative only when the cutter is in a central operative position, substantially as described.

13. A rounding machine, having, in combination, a vertical slide, a cutter support mounted to rotate on the slide about a vertical axis, and means for locking the support on the slide comprising a pivoted dog carried by one of the said parts and a recess carried by the other of said parts and a device for moving the dog into and out of engagement with the recess, substantially as described.

14. A rounding machine, having, in combination, a work support, a cutter, a counterbalanced vertical slide therefor, a horizontal slide for the vertical slide, means for moving the vertical slide comprising a presser foot carried thereby and arranged to travel over the work and follow the varying slopes thereon, and means for moving the horizontal slide comprising a spring for moving the horizontal slide in one direction and a cam traveling with the work support for moving the horlzontal slide in the other direction, substantially as described.

15. A shoe machine, having, in combination, an operating tool, a work support, a leader connected thereto, means for feeding the leader, means for swinging the leader laterally about an axis substantially coincident with the point of operation of the tool, and means for shifting the tool transversely of the feed during a predetermined part of its travel along the work, substantially as described.

16. A shoe machine, having, in combination, a rounding knife, a work supporting jack, a leader secured thereto, mechanism for feeding and swinging the leader to transfer the point of operation of the tool around the work, and a cam for shifting the knife transversely of the feed during a predetermined part of its travel along the work, substantially as described.

17. A hoe machine, having, in combination, an operating tool, a shoe sup orting ack, a leader connected thereto, mec lianism for feedlng the leader longitudinally, and means for swinging the leader laterally about a fixed axis during its feed longitudinally, substantiall as described.

18. A shoe mac ine, having, in combination, an operating tool, a work support, a leader connected thereto, mechanism for actuatin the leader to transfer the point of operation of the tool around the work, mechanism for swinging the leader during a predetermined part of the travel of the tool around the work about an axis passing substantially through the point of operation .of the tool, and mechanlsm for relatively shifting the tool and leader during another .part of the travel of the tool around the work to remove the point of operation of the tool from proximity to the axis about which the leader swings, substantially as described.

of the tool, and mechanism for shifting the tool during another part of the travel of the tool around the work to remove its point of operation from proximity to the axis about which the leader swings, substantially as described.

20. A shoe machine, having, in combination, an operating tool, a work support, a leader secured thereto rovided with a guiding flange, mechanism or feeding the leader, guides having a three-point contact with the guiding flange for swinging the leader laterally during its feed, and mechanism for maintaining the three-point contact of the guides with the flange as the leader is fed and swung, substantially as described.

21. A shoe machine, having, in combination, an operating tool, a work support, a leader secured thereto provided with a guiding flange, mechanism for feeding the leader to transfer the point of operation of the tool means for holding the pair of guides engag ing outside the flan e constantly engaged therewith during their traverse aroundthe flange, substantially as described.

22. The combination with an operating tool, of a shoe supporting jack, a leader secured thereto provided with a guiding flange,

meansfor relatively actuating the tool and 23. The combination with an operating tool, of a shoe supporting jack, a leader secured thereto provided with a guiding flange, means for relatively actuating the tool and the jack to transfer the tool around the shoe, relatively yielding guides engaging said flange and cooperating therewith to swing the jack laterally as the tool is transferred around the shoe, a spring constructed and arranged to resist the yield of the guides with its maximum pressure during the transfer of the tool along the shank of the shoe, and means for decreasing the pressure on the guides during the transfer of thetool along the shank of the shoe, substantially as described. I

24. The combination with an operating tool, of a shoe supporting jack, a leader secured thereto provided with a guiding flange, means for relatively actuating the tool and the jack to transfer the tool around the shoe, relatively yielding guides engaging said flange and cooperating therewith to swing the jack laterally as the tool is transferred around the shoe, a spring constructed and arranged to resist the yield of the guides with its minimum and maximum pressures during the transfer of the tool around the toe and along the shank of the shoe, respectively, means for increasing the pressure on the guides during the transfer of the tool around the toe of the shoe, and means for decreasing the pressure on the guides during the transfer of the tool along the shank of the shoe, substantially as described.

25. The combination with an operating tool, of a shoe supporting jack, a leader secured thereto provided with a guiding flange, a guiding device arranged to engage the flange, a spring, and connections through which the spring forces the guiding device with a variable pressure against the flange including a lever connected to the spring and arranged to vary the leverage inversely to variatlons in the tensionof the spring, substantially as described.

26. The combination with an operating tool, of a shoe supporting jack, aleader secured thereto provided with a guiding flange, a guiding device arranged to engage the flange, a spring, and connections throu h which the spring presses the guiding evices against the flange including a lever of thesecond order, substantially as described.

27. The combination with an operating tool, of a shoe supporting jack, a leader s'e- .cured thereto provided with a guiding flange,

a guiding device arranged to enga e the flange, and means including a togg e for pressing the guiding device with a variable pressure against the flange, substantially as described. i

28. The combination with an operating tool, of a shoe supporting jack, a leader secured thereto provided with aguiding flange,

a guiding device arranged to engage the having a bevel formed on its exterior face at the upper end thereof, and a pair of frusto-conical rolls arranged to engage the bevel, substantially as described.

30. An insole rounding machine, having, in combination, a reciprocating cutter, a support comprising a last having a roughly died outsole attached thereto constructed to permit the passage of the cutter through the insole without interference between the cutter and last, and means for relatively actuating the support and cutter to trim the edge of the insole around the last to the edge of the last bottom, substantially as described.

31. The combination with an operating tool, of a shoe supporting jack, a leader secured thereto provided with a guiding flange,

'means for feeding the jack longitudinally,

means for swinging the jack laterally dur- 1n gu ide arranged to engage one face of the guiding flange and a pair of guides arranged to engage the other face of the guiding flange, a spring for pressing the pair of guides against the flange constructed and arranged to exert its minimum pressure when the guides engage a convex curve on the flange and to exert its maximum pres sure when the guides engage a concave curve on the flange, and connections through which the pressure of the spring is applied to the guides inversely, substantially as described.

32. A machine of the class described, havcured thereto provided with a guiding flange,

its feed longitudinally comprising a ing, in combination, an operating tool, a

Work support, means for correcting the relative positionof the tool and the support including a leader for guiding the tool through a predetermined path, and mechanism for relatively shifting the tool and the Work-to cause the tool to traverse a detour coterminous with said path, substantially as described.

33. A shoe machine having, in combinameans for swinging the leader laterally about a fixed axis coinciding with the edge of the insole of the shoe mounted on the jack 15 during its feed longitudinally.

" oHARLEs o. BLAKE.