US2207819A - Machine for operating on shoes - Google Patents

Machine for operating on shoes Download PDF

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Publication number
US2207819A
US2207819A US262488A US26248839A US2207819A US 2207819 A US2207819 A US 2207819A US 262488 A US262488 A US 262488A US 26248839 A US26248839 A US 26248839A US 2207819 A US2207819 A US 2207819A
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last
band
heel
clamping
machine
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US262488A
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John W Pratt
William A Barker
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United Shoe Machinery Corp
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United Shoe Machinery Corp
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    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43DMACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D21/00Lasting machines
    • A43D21/12Lasting machines with lasting clamps, shoe-shaped clamps, pincers, wipers, stretching straps or the like for forming the toe or heel parts of the last

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  • This invention relates to machines for operating on shoes, and is herein illustrated as applied to a machine for lasting the heel ends of shoes, the machine being one of the same type as disclosed in United States Letters Patent No.
  • a machine of the character disclosed in the above mentloned Letters Patent comprises a heel 151 band for embracingand clamping an upper about the heel end of a last, wipers for wiping the margin of the heel end of the upper inwardly over an insole or heel-seat piece on the last, and a jack which is'mounted to swing in a direction lengthwise of the last from an initial work receiving position to present the heel end of the last and upper within the heel band prior to the starting of the. power operation of the machine, the jack including a post which is also movable upwardly to carry the shoe into contact with a 25 holddown which determines the position of the shoe heightwise relatively to: the wipers.
  • Such a machine is sometimesused for lasting the heel ends of shoes, such as.
  • the present invention in one aspect, provides novel means for clamping the upper to maintain it in proper adjusted relation to thelast.
  • clamping means comprises an auxiliary heel band arranged to be positioned between the main heel band and the upper during the lasting operation, and
  • the construction herein shown is further such that the band and the mechanism for'applying it to the .shoe are so supported as to partake of the upward movement of the jack post as well as the swinging movement of the jack, and also to partake of certain tipping movements and bodily lateral movements of the work which, in a machine of the illustrated type, the operator may effect to adjust the work in proper relation to the lasting instrumentalities.
  • the machine herein shown is also provided with novel means for locking the auxiliary band in clamping relation to the upper and for thereafter releasing it as the jack returns toits starting position after the lasting. operation.
  • the mechanism for applying the auxillary band to the shoe comprises novel means whereby the band is first moved lengthwise of the shoe into clamping relation to the upper at the extreme end of the shoe and is then forced inwardly into clamping relation to the upper at the sides of the shoe.
  • the construction shown comprises levers which are connected to the ends of the band and, by depression of a treadle, are swung first lengthwise of the shoe and then laterally of the shoe, the swinging of the levers laterally of the shoe resulting from resistance of the shoe to the movement of thelevers lengthwise thereof. More particularly,
  • these band-applying levers are thus operated by the movement of a third lever connected to the treadle, this third lever being associated with a toggle deviceon which it fulcrums in its movement to swing the band-applying levers length- Wise of the shoe and which is yieldable thereafter to effect the movements of the band-applying levers laterally of the shoe. Provision is also afforded, by reason of the normal shape of the band and its resiliency, for applying it in clamp ing relation to the upper at the sides of the shoe first in locations at substantial distances from the edge .of the last bottom and then progressively nearer the last bottom, as further insurance that the upper will be properly clamped without the presence of any objectionable wrinkles.
  • the auxiliary band serves to conform the upper smoothly and tightly to the contour of the last before it is subjected tothe heavier conforming pressure of the main band, and thus assists in the proper shaping of the upper. It will be recognized that with respect to the auxiliary band herein shown and themechanism for applying it to the shoe, the invention in certain of its novel aspects is not necessarily limited in utility to a machine in which there is also another band to operate on the shoe.
  • Fig.1 is a View in left-hand side elevation of a portion ofv a machine in which the invention is embodied, showing the auxiliary heel band in clamping relation to the heel end of a shoe, parts of the structure being broken away;
  • Fig. 2 is a View mainly in front elevation, on an enlarged scale, of a portion of the structure shown in Fig. l with the parts in the same positions as in Fig. 1 but with the position of the shoe indicated diagrammatically by broken lines;
  • Fig. 3 is a view similar to the upper portion of Fig. 2, but showing the auxiliary heel band in its open position;
  • Fig. 4 is a sectional view through a last pin on the jack, and parts associated therewith, in a plane extending heightwise and laterally of the shoe.
  • the machine is provided with a shoesupporting jack l mounted to swing, prior to the starting of the power-operation of the machine, from an initial forwardly inclined work-receiving position to carry the shoe into position for its heel end to be embraced and clamped by a heel band 2, the lower portion of which is shown in Fig. 1.
  • wipers for wiping the margin of the heel end of the upper inwardly over an insole or heel-seat piece on the last, and a holddown into engagement with which the heel end of the shoe is carried by upward movement of a jack post 3, the wipers and holddown being omitted from the present drawings.
  • a last pin t arranged to enter the spindle hole in the heel end of the last, this last pin in the construction shown being fast in a block 5 (Fig. l) which is mounted in a transverse guideway 6 formed in another block I supported on the upper end of the post 3.
  • a screw 8 extending through a slot 9 in the block 5 and threaded at one end in the block 1 retains the block 5 in place while permitting it to rock and also to move bodily with the last pin in directions widthwise of the shoe.
  • the block I is mounted in arcuate guideways it in the post 3 for movement about an axis extending laterally of the shoe and located substantially at the bottom of the heel end of the shoe. Accordingly the operator, before starting the power operation of the machine, may by control of the forepart of the shoe and last tip them, together with the last pin, in one direction or another or move them bodily to the left or the right to position them in proper relation to the lasting instrumentalities.
  • the jack 1 therefore, that the plate l2 partakes of any of the above-mentioned positioning movements of the last pin 4 and the last mounted thereon.
  • an auxiliary heel band M for clamping the heel end of the upper against the end and side faces of the last when the jack is in its work-receiving position and for holding the upper thus clamped as the jack is swung to carry the work into the heel band 2.
  • the auxiliary heel hand may be maintained in proper clamping relation to the upper as the work is raised by the post 3 and during any such tipping or bodily lateral movements of the last as above described, the auxiliary band and the mechanism. forapplying it to the shoe are supported on the above-mentioned plate I2.
  • the plate has secured to it a depending carrier i5 to which a casting I6 is secured by bolts H.
  • the casting I6 is provided at its opposite sides with guideways it for a frame l9 which, as viewed from above, is substantially U-shaped with its two limbs ex-' tending forwardly, this frame being bolted to the casting HQ with provision for upward or down ward adjustment along the guideways I8.
  • the forward end of each limb of the frame H) has thereon a boss 2t, and hollow pins 2
  • the frame 22 is provided with an upwardly and forwardly curved lug 23 formed on the middle portion of the web which joins the rear ends of its limbs, this lug being of a hollow and substantially rectangular shape as viewed from the front (Fig. 2).
  • a pin 24 secured in the opposite sides of the lug 23 provides a pivotal support for a depending lever 25, the pin being normally supported at a definite height, in order to prevent the frame 22 and the lever 25 from falling, bya connection hereinafter described between the lug 23 and heel-band'sup porting levers 31.
  • the depending lever 25 has mounted therein,
  • a plunger 29 which is urged rearwardly by a spring 39 and bears at its rear end against a face in on the frame 22, so that the spring tends to swing the lever 25 forwardly about the pin 24'.
  • the lever 25 is swung rearwardly about the pin 24 by mechanism hereinafter described, and by such movement of the lever the auxiliary heel band M is applied to the shoe.
  • a rod 35 which extends widthwise of the machine, the rod being capable of moving lengthwise relatively to this ear a short distance determined by flanges
  • the opposite end portions of the rod 35 have right and left threads, respectively, formed thereon, and these portions of the rod extend through correspondingly threaded studs 36 on which are mounted the previously mentioned levers 37 which support the front ends of the auxiliary band l4.
  • the rod 35 may be turned to cause the upper ends of the levers 31 to approach or separate from each other as required by shoes of different widths.
  • the studs 36 support the levers3'l substantially midway between the upper and lower ends of the levers, and in order to apply the auxiliary bandv properly to the shoe, provision is afforded for swinging movements of the levers first lengthwise of: theshoe about axes at their lower ends to causethe band to clamp the upper against the endface of the last and then laterally of the shoe about the studs 36 to force the forward ends of the band inwardly against the sides of the shoe.
  • the lower ends of the levers are forked and are pivotally connected by pins 40 to the enlarged heads of studs 39 which have hollow portions movable lengthwise and also rotatable within the previously mentioned hollow pins 2
  • having rounded ends seated in. recesses formed in the studs and the lever.
  • are arranged to serve as-a toggle between the'studs 39 and the lever 25, and by the action of the spring 30 on the lever 25 and of the springs 42 on the studs 39 the parts are normally so positioned that the links4l extend forwardly at a substantial angle to each other.
  • the lever 25 begins to swing about the pin 24 during a continued rearward pull on its lower end and therefore acts to straighten more or less the toggle provided by the links 4
  • the upper ends of the levers 31 are forked and carry pins'44-extending lengthwise of the shoe and on which are pivotally mounted blocks 48 secured to the forward ends of the band l4. This.
  • the band is long enough to extend well forwardly of the heel-breast line of a large size shoe beyond the portion of the upper clamped by the main band '2, and the upper edges of the band at its forward ends are arranged to press the upper against the sides of the last almost up to the edge of the insole or heel-seat piece on the bottom of the last, the frame I9 being adjustable as described to position the band in the most appropriate relation to shoes having heel ends of different heights.
  • the rear end portion of the band is arranged to extend so far downwardly as to engage the upper close to the top edge of the counter, and therefore serves to hold this portion of the upper materials against movement away from the end face of the last during the lasting operation.
  • the band consists of an inner layer 43 of thin flexible leather backed up by a layer 45 of thin resilient metal, the band as a whole, therefore, being so formed as to accommodate itself readily to the heel ends of lasts of varying sizes and shapes.
  • the aux- is so formed as to expose a portion of the upper lying between the; edge of the heelseat and a narrow portion end of the upper near the top of the counter.
  • iliary band is provided with a pair of 'wings 46 extending rearwardly from its front end portions and arranged to be pressedagainst the upper by the main band as the latter closes around the shoe.
  • the metal layer 45 of the auxiliary band is so shaped as to cause the upper edges of the portions of the band at the sides of the shoe to flare somewhat outward relatively to the lower edges before the band engages the shoe,
  • abutment 53 which is engaged by a latch 54 formed on a lever 55 .pivotally mounted on theframe I9, this lever being controlled by a spring-pressed plunger 56 which tends to swing the latch upwardly butis yieldable to permit the abutment 53 to snap over the latch.
  • the jack I has fast thereon an arm 51 which supports on its forward end portion a latch-releasing lever 59 pivotally mounted on a pin 5
  • This lever as shown; has an upwardly and rearwardly curved arm arranged to engage the lower end of the lever 55 and thus to swing the latch 54 downwardly in re.-' sponse to the forward swinging movement of the jack.
  • Pivotally mounted on a pin '62 on a short forwardly extending arm of the lever 59 is a downwardly extending tubular casing 64 in which is mounted a. plunger 66 engaged at its upper end by a spring 68 in the casing.
  • a rod 12 Slidingly mounted in a forwardly extending lug 10 on the casing 64 is a rod 12 arranged to bear at its upper end against the arm 51 and controlledby a of the band extending continuously around'the spring 14 mounted between the lug l and a nut 16' on the rod.- It will thus be seen that the spring 14 tends to swing the casing 64 in a rearward direction, such movement of the casing being limited by a stop screw 18 which is threaded in a lug 80 on thecasing and is arranged to engage the arm 51. This screw is so adjusted that when the jack is in its forwardly inclined position the lower end of the plunger 66 lies in front of a plate 82 fast on the frame of the machine.
  • the operator first adjusts the frame l9 upwardly or downwardly, if necessary, to position the auxiliary band [4 at the proper height for the work to be operated upon, and also, if necessary, adjusts the forward ends of the band toward or from each other by turning the rod 35. If the machine is to operate on stitchdown shoes of a type in which the heel end of the upper is fastened in lasted position to a loose heel-seat piece as distinguished from a complete insole, the operator positions such a heel-seat piece on the bottom of the last and assembles .an upper on the last with a counter in its heel-end portion.
  • the operator next adjusts the extreme heel end of the upper into the desired position heightwise of the last and, by means of hand pincers or otherwise, applies an upward pull to the opposite sides of the upper just in front of the heel-breast line of the shoe to position those portions at the proper height and cause them to lie snugly against the sides of the last.
  • the operator depresses the treadle 52 to move the auxiliary heel band I4 first forwardly lengthwise of the last, and by further depression of the treadle forces the forward end portions of the band inwardly into clamping relation to the upper at the sides of the last.
  • the band serves to press the upper closely against the heel-end face of the last, especially near the top of the counter, and to work the upper forwardly along the sides of the heel portion of the last.
  • the band engages the sides of the upper first at substantial distances from the edge of the last bottom and thenprogressively nearer the last bottom to insure that the upper will be clamped smoothly against the last without objectionable wrinkles.
  • auxiliary heel band in addition to holding the heel end of the upper in proper relation to the last during the movements of the jack, also serves as means for shaping the heel portion of the upper preliminarily about the last before the main heel band 2 becomes effective to perfect the shaping of the upper by its further clamping pressure about the heel end of the last.
  • the operator starts the power operation of the machine and the heelend lasting operation is then performed in the manner characteristic of machines of the illustrated type.
  • the jack is permitted to swing forwardly to its initial position, and in this swinging movement of the jack the latch 54 is operatedby the lever 59 torelease the mechanism which operatesthe auxiliary heel band and permit this mechanism and the band to return to their starting positions.
  • a heel band for embracing and clamping an upper about the heel end of a last against the end and side faces of the last
  • a Work support movable from. a work-receiving position to present the heel end of the last and upper within said band, of an auxiliary band ar- I ranged to be positioned between said first-named band and the upper for also embracing and Y clamping the upper about the heel end of the last against the end and side faces of the last, and means for moving said auxiliary band lengthwise of the last to clamp the upper against the end face of the last and for also moving its ends inwardly to clamp the upper against the side faces of the last prior to the work-presenting movement of the work support.
  • a heel band for embracing and clamping an upper about the heel end of a last, and a work support movable from a work-receiving position to present the. heel end of the last and upper within said band, of an auxiliary band for also embracing and clamping the upper about the heel end of the last, and means connected to the ends of said auxiliary band for first moving it lengthwise of the last and then moving its ends inwardly toward the sides of the last prior to the work-presenting movement of the work support.
  • a machine for operating on shoes the combination with a heel band for embracing and clamping an upper about the heel end of a last against the end and side faces, of the last, and a work support movable from a work-receiving position to present the heel end of the last and upper within said band, of an auxiliary band arranged to be positioned between said firstnamed band and the upper for also embracing and clamping the upper about the heel end of the last against the end and side faces of the last, and mechanism carried by the work support and connected to the ends of said auxiliary band for applying it to the upper.
  • a heel band for embracing and clamping an upper about the heel end of a last, and a work support movable from a work-receiving position to present the heel end of the last and upper within said band
  • an auxiliary band arranged to be positioned between said firstnamed band and the upper for also embracing and clamping the upper about the heel end of the last
  • said auxiliary band having end portions arranged to extend toward the toe end of the last beyond the portions of the upper embraced by said first-named band, members carried by the'work support and connected to said end portions of the-auxiliary band,”and means for operating said members to move the auxiliary band lengthwise of the last and to force its end portions inwardly toward thesides of the last.
  • a'machine for operating on shoes the combination. with a heel band for" embracing and clamping an upper about the heel end of a last, and a work support movable from a work-receiving position to present the heel end of the last and upper within said band, of an auxiliary band arranged to be positioned between said firstnarned band and the upper for also embracing and clamping'the upper about the heel end of the last, and mechanism. carried by the workclamping an upper about the heel end of a last,
  • auxiliary band arranged to be positioned between said first-named band and the upper for also embracing and clamping the upper about the heel end of the last, said auxiliary band having end portions arranged to extend toward the toe end of the last beyond the portions of the upper embraced by said first-named band, and means connected to said end portions for applying the auxiliary bandto the upper.
  • a heel band for embracing and clamping an upper about the heel end of a last
  • an auxiliary band arranged to be positioned between said first-named band and the upper for also embracing and clamping the heel end of the upper
  • said auxiliary band having an upper-clamping portion formed to extend continuous'ly around the heel end of the last in a location spaced a substantial distance heightthe edge of the last bottom, and means for ap- I plying said auxiliary band to the upper before the upper is clamped by said first-named band.
  • auxiliary band arranged to be positioned between said first-named band andthe upper for also embracing and clamping the upper about the heel end of the last
  • said auxiliary band having an upper-clamping portion formed to extend continuously around the'heel end of the last in a location spaced a substantial distance heightwise ofthe last from the edge of the last bottom and also having wings arranged to project heelwardly in spaced relation to said continuous portion for clamping the upper in locations nearer the edge of the last bottom, and means for applying said auxiliary band to the upper before the last and upper are carried into position to be clamped by said firstnarned band.
  • a band for embracing and clamping an upper about the heel end of a last said band having an upperclamping portion formed toextend continuously around the heel. end of the last in a location spaced a substantial distance heightwise of the last'from the edge of the last bottom and also having wings arranged to project from its end portions heelwardly for clamping the upper in locations between said continuous portion and the edge of the last bottom.
  • a band for embracing and clamping an upper about the heel end of a last said band having an upper-clamping portion formed to extend continuously around the heel end of the last in a location spaced a substantial distance heightwise of the last from the edge of the last bottom and also having resilient end portions normally flaring in such relation to each other as to engage the upper first at a distance from the edge of the last bottom and then nearer said edge as said end portions are forced inwardly toward the sides of the last, said end portions of the band being provided With wings arranged to project heelwardly therefrom for clamping the upper in locations between said continuous portion and the edge of the last bottom.
  • a jack movable to carry the last and upper lengthwise toward said operating means and including an upwardly extending post movable upward relatively to the other portions of the jack to lift the work, a device for clamping the upper against the heel end of the last, and mechanism movable to force said device against the upper prior to the movement of the jack, said mechanism being supported on said post so as to move upwardly with the post.
  • a machine for operating on shoes the combination with means for operating on the heel end of an upper on a last, of a jack movable to carry the last and upper lengthwise toward said operating means and including an upwardly extending post movable upward relatively to the other portions of the jack to lift the work, a band for embracing and clamping the upper about the heel end of the last, and mechanism connected tothe ends of said band for supporting it and for applying it to the upper, said mechanism being supported on said post so as to move upwardly with the post.
  • a machine for operating on shoes the combination with means for operating on the heel end of an upper on a last, of a jack movable to carry the last and upper toward said operating means and including an upwardly extending post having at its upper end a heel-end support movable with the last relatively to the post to permit adjustment of the last, a device for clamping the upper against the heel end of the last, and mechanism movable to force said device against the upper, said mechanism being mounted on said heel-end support so as to partake of the adjusting movements of the last.
  • a machine for operating on shoes the combination with means for operating on the heel end of an upper on a last, of a work support movable to carry the work toward said operating means, a band for embracing and clamping the upper about the heel end of the last, mechanism carried by said work support for applying said band in clamping relation to the upper, a latch for retaining said mechanism in bandapplying position, a lever carried by the work support, and relatively stationary means arranged to operate said lever to withdraw the latch from operative position in response to return movement of the work support.

Description

July 16, 1940. I
J. w. PRATT ET AL 9 MACHINE FOR OPERATING ON SHOES Filed March l'l, 1959 2 Sheets-sheet 1 July 16, 1940. J. w. PRATT El AL MACHINE FGR OPERATING ON SHOES Filed March 17; 959
2 Sheets-Sheet 2 Patented July 16, I940 UNITED "sTArss errant" OFFICE "MACHINE Fen oPERATiNG 0N SHOES,
Application March 17, 1939, Serial No. 262,488 In Great Britain April 28, 1938 25 Claims. (01. 12-123) This invention relates to machines for operating on shoes, and is herein illustrated as applied to a machine for lasting the heel ends of shoes, the machine being one of the same type as disclosed in United States Letters Patent No.
1,949,539, granted on March 6, 1934 on an application of J Gouldbourn, F. Ricks and W. T. B. Roberts. It is to be understood, however, that the invention is not limited to machines of that particular type and that in some of its aspects also it is not limited in utility to lasting machines.
A machine of the character disclosed in the above mentloned Letters Patent comprises a heel 151 band for embracingand clamping an upper about the heel end of a last, wipers for wiping the margin of the heel end of the upper inwardly over an insole or heel-seat piece on the last, and a jack which is'mounted to swing in a direction lengthwise of the last from an initial work receiving position to present the heel end of the last and upper within the heel band prior to the starting of the. power operation of the machine, the jack including a post which is also movable upwardly to carry the shoe into contact with a 25 holddown which determines the position of the shoe heightwise relatively to: the wipers. Such a machine is sometimesused for lasting the heel ends of shoes, such as. some kinds of stitchdown shoes, the uppers of which are loose on their lasts, or atall events have not been previously subjected to the usual assembling and pullingover operations,.when the work is presented to the machine. Under those conditions it is customary for the operator to adjust the heel end of the upper heightwise relatively to the last and to maintain it at the correct height by holding it with his fingers in locations near the forward end of'the heel seat until he starts the power operation of the machine. In order to relieve the 405 operator of the necessity of thus holding the upper until the heel band assumes control of it, which it is sometimes dirficult or inconvenient for him to do, the present invention, in one aspect, provides novel means for clamping the upper to maintain it in proper adjusted relation to thelast. A's herein illustrated, such clamping means comprises an auxiliary heel band arranged to be positioned between the main heel band and the upper during the lasting operation, and
mechanism supported on the jack for applying the auxiliary band in clamping relation to the upper prior to the work-presenting movement of the jack. To permit this hand to be main.- tained in proper relation to the upper, the construction herein shown is further such that the band and the mechanism for'applying it to the .shoe are so supported as to partake of the upward movement of the jack post as well as the swinging movement of the jack, and also to partake of certain tipping movements and bodily lateral movements of the work which, in a machine of the illustrated type, the operator may effect to adjust the work in proper relation to the lasting instrumentalities. The machine herein shown is also provided with novel means for locking the auxiliary band in clamping relation to the upper and for thereafter releasing it as the jack returns toits starting position after the lasting. operation.
In accordance with a further feature of the invention, the mechanism for applying the auxillary band to the shoe comprises novel means whereby the band is first moved lengthwise of the shoe into clamping relation to the upper at the extreme end of the shoe and is then forced inwardly into clamping relation to the upper at the sides of the shoe. For this purpose the construction shown comprises levers which are connected to the ends of the band and, by depression of a treadle, are swung first lengthwise of the shoe and then laterally of the shoe, the swinging of the levers laterally of the shoe resulting from resistance of the shoe to the movement of thelevers lengthwise thereof. More particularly,
these band-applying levers are thus operated by the movement of a third lever connected to the treadle, this third lever being associated with a toggle deviceon which it fulcrums in its movement to swing the band-applying levers length- Wise of the shoe and which is yieldable thereafter to effect the movements of the band-applying levers laterally of the shoe. Provision is also afforded, by reason of the normal shape of the band and its resiliency, for applying it in clamp ing relation to the upper at the sides of the shoe first in locations at substantial distances from the edge .of the last bottom and then progressively nearer the last bottom, as further insurance that the upper will be properly clamped without the presence of any objectionable wrinkles. In addition to maintaining the heel-end portion of the upper in proper adjusted relation to the last, the auxiliary band serves to conform the upper smoothly and tightly to the contour of the last before it is subjected tothe heavier conforming pressure of the main band, and thus assists in the proper shaping of the upper. It will be recognized that with respect to the auxiliary band herein shown and themechanism for applying it to the shoe, the invention in certain of its novel aspects is not necessarily limited in utility to a machine in which there is also another band to operate on the shoe.
The above and other features of the invention, including various novel details of construction and combinations of parts, will now be more particularly described with reference to the accompanying drawings and thereafter pointed out in the claims.
In the drawings,
Fig.1 is a View in left-hand side elevation of a portion ofv a machine in which the invention is embodied, showing the auxiliary heel band in clamping relation to the heel end of a shoe, parts of the structure being broken away;
Fig. 2 is a View mainly in front elevation, on an enlarged scale, of a portion of the structure shown in Fig. l with the parts in the same positions as in Fig. 1 but with the position of the shoe indicated diagrammatically by broken lines;
Fig. 3 is a view similar to the upper portion of Fig. 2, but showing the auxiliary heel band in its open position; and
Fig. 4 is a sectional view through a last pin on the jack, and parts associated therewith, in a plane extending heightwise and laterally of the shoe.
Since the invention is herein illustrated as applied to a machine of the character disclosed in the previously mentioned Letters Patent, only such parts as it is necessary to refer to for an understanding of the invention will be described in detail. The machine is provided with a shoesupporting jack l mounted to swing, prior to the starting of the power-operation of the machine, from an initial forwardly inclined work-receiving position to carry the shoe into position for its heel end to be embraced and clamped by a heel band 2, the lower portion of which is shown in Fig. 1. It will be understood that associated with the heel band are wipers for wiping the margin of the heel end of the upper inwardly over an insole or heel-seat piece on the last, and a holddown into engagement with which the heel end of the shoe is carried by upward movement of a jack post 3, the wipers and holddown being omitted from the present drawings. is provided with a last pin t arranged to enter the spindle hole in the heel end of the last, this last pin in the construction shown being fast in a block 5 (Fig. l) which is mounted in a transverse guideway 6 formed in another block I supported on the upper end of the post 3. A screw 8 extending through a slot 9 in the block 5 and threaded at one end in the block 1 retains the block 5 in place while permitting it to rock and also to move bodily with the last pin in directions widthwise of the shoe. The block I is mounted in arcuate guideways it in the post 3 for movement about an axis extending laterally of the shoe and located substantially at the bottom of the heel end of the shoe. Accordingly the operator, before starting the power operation of the machine, may by control of the forepart of the shoe and last tip them, together with the last pin, in one direction or another or move them bodily to the left or the right to position them in proper relation to the lasting instrumentalities. The top of the cone of the last when the latter is mounted on the pin 5 rests on a plate l2 through which the pin extends, this plate being supported on the block 5 and being held thereon by a pair of leaf springs l3 which are fast on the block and extend into grooves formed. in the opposite sides of the plate. It will be understood,
The jack 1 therefore, that the plate l2 partakes of any of the above-mentioned positioning movements of the last pin 4 and the last mounted thereon.
For purposes of the present invention there is provided, in addition to the main heel band 2, an auxiliary heel band M for clamping the heel end of the upper against the end and side faces of the last when the jack is in its work-receiving position and for holding the upper thus clamped as the jack is swung to carry the work into the heel band 2. In order that the auxiliary heel hand may be maintained in proper clamping relation to the upper as the work is raised by the post 3 and during any such tipping or bodily lateral movements of the last as above described, the auxiliary band and the mechanism. forapplying it to the shoe are supported on the above-mentioned plate I2. To this end, the plate has secured to it a depending carrier i5 to which a casting I6 is secured by bolts H. The casting I6 is provided at its opposite sides with guideways it for a frame l9 which, as viewed from above, is substantially U-shaped with its two limbs ex-' tending forwardly, this frame being bolted to the casting HQ with provision for upward or down ward adjustment along the guideways I8. The forward end of each limb of the frame H) has thereon a boss 2t, and hollow pins 2| extending into these bosses provide a pivotal connection between the frame l9 and asecond somewhat similarly shaped frame 22 the forwardly extending limbs of which lie at the inner sides of the limbs of the frame l9 but are inclined somewhat upwardly toward their rear ends. The frame 22 is provided with an upwardly and forwardly curved lug 23 formed on the middle portion of the web which joins the rear ends of its limbs, this lug being of a hollow and substantially rectangular shape as viewed from the front (Fig. 2). A pin 24 secured in the opposite sides of the lug 23 provides a pivotal support for a depending lever 25, the pin being normally supported at a definite height, in order to prevent the frame 22 and the lever 25 from falling, bya connection hereinafter described between the lug 23 and heel-band'sup porting levers 31.
The depending lever 25 has mounted therein,
approximately midway between its upper and lower ends, a plunger 29 which is urged rearwardly by a spring 39 and bears at its rear end against a face in on the frame 22, so that the spring tends to swing the lever 25 forwardly about the pin 24'. The lever 25 is swung rearwardly about the pin 24 by mechanism hereinafter described, and by such movement of the lever the auxiliary heel band M is applied to the shoe. ed in an upstanding ear 33 on the lug 23 a rod 35 which extends widthwise of the machine, the rod being capable of moving lengthwise relatively to this ear a short distance determined by flanges For this purpose there is rotatably mount- 36 formed on the rodat the opposite sides of the ear. The opposite end portions of the rod 35 have right and left threads, respectively, formed thereon, and these portions of the rod extend through correspondingly threaded studs 36 on which are mounted the previously mentioned levers 37 which support the front ends of the auxiliary band l4. By means of a knob 38 the rod 35 may be turned to cause the upper ends of the levers 31 to approach or separate from each other as required by shoes of different widths. The studs 36 support the levers3'l substantially midway between the upper and lower ends of the levers, and in order to apply the auxiliary bandv properly to the shoe, provision is afforded for swinging movements of the levers first lengthwise of: theshoe about axes at their lower ends to causethe band to clamp the upper against the endface of the last and then laterally of the shoe about the studs 36 to force the forward ends of the band inwardly against the sides of the shoe. The lower ends of the levers are forked and are pivotally connected by pins 40 to the enlarged heads of studs 39 which have hollow portions movable lengthwise and also rotatable within the previously mentioned hollow pins 2| on the frame I9. Springs 42in the hollow portions of the studs 39-tend to. force the studs inwardly toward each other. Between the inner ends of the studs and the opposite sides of the lever 25 are links 4| having rounded ends seated in. recesses formed in the studs and the lever. The links-4| are arranged to serve as-a toggle between the'studs 39 and the lever 25, and by the action of the spring 30 on the lever 25 and of the springs 42 on the studs 39 the parts are normally so positioned that the links4l extend forwardly at a substantial angle to each other. By reason of the resistance of the springs 42 a rearward pull on the lower end of the lever 25 first causes the lever to swing about the inner ends of the links 4| as a fulcrum, so that through the pin 24 it swings the frame 22 forwardly about the hollow Since this frame is connected to the levers3'l by the rod 35, this movement of the lever 25 serves to swing the levers 3! forwardly about the axes of the studs 39 at their lower ends to apply the band |4in clamping relation to the end face of the upper Thereafter, in response to resistance of the shoe to forward swinging movement of the levers 31, the lever 25 begins to swing about the pin 24 during a continued rearward pull on its lower end and therefore acts to straighten more or less the toggle provided by the links 4| and thus to swing the levers 31 about the studs 36 to force the forward ends of theband inwardly against the sides of the shoe.
The upper ends of the levers 31 are forked and carry pins'44-extending lengthwise of the shoe and on which are pivotally mounted blocks 48 secured to the forward ends of the band l4. This.
band is long enough to extend well forwardly of the heel-breast line of a large size shoe beyond the portion of the upper clamped by the main band '2, and the upper edges of the band at its forward ends are arranged to press the upper against the sides of the last almost up to the edge of the insole or heel-seat piece on the bottom of the last, the frame I9 being adjustable as described to position the band in the most appropriate relation to shoes having heel ends of different heights. The rear end portion of the band is arranged to extend so far downwardly as to engage the upper close to the top edge of the counter, and therefore serves to hold this portion of the upper materials against movement away from the end face of the last during the lasting operation. This affords increased insurance that during the action of the wipers the wings of the counter will not be displaced in a downward direction. The band consists of an inner layer 43 of thin flexible leather backed up by a layer 45 of thin resilient metal, the band as a whole, therefore, being so formed as to accommodate itself readily to the heel ends of lasts of varying sizes and shapes. To increase the flexibility of the auxiliary band, it is so formed as to expose a portion of the upper lying between the; edge of the heelseat and a narrow portion end of the upper near the top of the counter. In order to prevent the main band 2 from forming creases in the upper thus exposed by urging it forwardly along the sides of the last, the aux-.
iliary band is provided with a pair of 'wings 46 extending rearwardly from its front end portions and arranged to be pressedagainst the upper by the main band as the latter closes around the shoe. The metal layer 45 of the auxiliary band, moreover, is so shaped as to cause the upper edges of the portions of the band at the sides of the shoe to flare somewhat outward relatively to the lower edges before the band engages the shoe,
as illustrated in Fig.3, and the connections between the band'and the levers 31 are positioned near the upper edges of the band. By reason of this construction the lower edges of the band at thesides ofthe shoeengage the upper before the upper edges of the band and the area of contact of the band with the sides of the upper progressively spreads toward the edge of the last bottom as the levers 31 are swung inwardly. This serves to prevent the formation of wrinkles in the sides of the upper and causes the opposite side margins of the upper to extend well inward over the bottom of the last forwardly of the heel-breast line. The pins 44 which connect the band to the levers 37 may be readily removedto permit bands of different lengths to be mounted on thelevers for use on shoes which differ widely in size. The levers 31 during their swinging movements are further guided and controlled by yokes 41 which vare formed on the frame 22 and partially embrace the lower arms of thelevers.
For operating the lever 25 to apply the band I4 to the shoe inthe manner above described, there is connected to the lower end of the lever a wire 49 whichextends partly around a small pulley 5| mounted on a downwardly extending portion of the casting l6 and is connected at its lower end to a treadle 52 pivoted on the frame of the machine. It will thus be seen that the lower end of the lever 25 is swung rearwardly by depression of the treadle. In order to hold the band in clamping relation to the upper when-the operator releases the treadle 52, there is provided on the lever 25 an abutment 53 which is engaged by a latch 54 formed on a lever 55 .pivotally mounted on theframe I9, this lever being controlled by a spring-pressed plunger 56 which tends to swing the latch upwardly butis yieldable to permit the abutment 53 to snap over the latch. There is further provided means for withdrawing the latch from the abutment to release the band-applying mechanism and permit the band to return to its initial position when the jack is swung forwardly to its initial position after the operation of the machine on the shoe. For this purpose the jack I has fast thereon an arm 51 which supports on its forward end portion a latch-releasing lever 59 pivotally mounted on a pin 5|) on the arm. This lever as shown; has an upwardly and rearwardly curved arm arranged to engage the lower end of the lever 55 and thus to swing the latch 54 downwardly in re.-' sponse to the forward swinging movement of the jack. Pivotally mounted on a pin '62 on a short forwardly extending arm of the lever 59: is a downwardly extending tubular casing 64 in which is mounted a. plunger 66 engaged at its upper end by a spring 68 in the casing. Slidingly mounted in a forwardly extending lug 10 on the casing 64 is a rod 12 arranged to bear at its upper end against the arm 51 and controlledby a of the band extending continuously around'the spring 14 mounted between the lug l and a nut 16' on the rod.- It will thus be seen that the spring 14 tends to swing the casing 64 in a rearward direction, such movement of the casing being limited by a stop screw 18 which is threaded in a lug 80 on thecasing and is arranged to engage the arm 51. This screw is so adjusted that when the jack is in its forwardly inclined position the lower end of the plunger 66 lies in front of a plate 82 fast on the frame of the machine. Itv will be understood that as the jack is swung rearwardly the forward end of the arm 51 swings both rearwardly and upwardly, in which movement of the arm the spring 14 may yield by reason-of engagement of the plate 82 with the lower end portion of the plunger 56 until the plunger has been lifted far enough to snap over thetop of the plate. When the jack is swung forwardly after the completion of the lasting operation, the lower end of the plunger 66 is engaged by the top of the plate 82 and by the action of the plate on the plunger the lever 59 is swung in a counterclockwise direction (Fig. 1), the spring 68 being stronger than the spring 14. By this movement the lever 59 operates the lever 55 to'cause the latch 54 to release the band-applying mechanism. As the jack nears the end of its forward swinging movement the plunger 66 snaps downwardly off the plate 82, permitting the parts to assume their normal positions illustrated in Fig. 1. When the band-applying mechanismis thus released by the latch 54 the frame 22 is returned to its initial position by a springpressed plunger 84 which is mounted in the frame I9 and engages a downwardly extending tail portion of the frame 22, and the lever 25 is swung forwardly about the pin 24 by the spring and.
the springs 42.
In the use of the machine equipped with the above-described mechanism the operator first adjusts the frame l9 upwardly or downwardly, if necessary, to position the auxiliary band [4 at the proper height for the work to be operated upon, and also, if necessary, adjusts the forward ends of the band toward or from each other by turning the rod 35. If the machine is to operate on stitchdown shoes of a type in which the heel end of the upper is fastened in lasted position to a loose heel-seat piece as distinguished from a complete insole, the operator positions such a heel-seat piece on the bottom of the last and assembles .an upper on the last with a counter in its heel-end portion. If he regards it as desirable, before mounting the last on the pin 4, he applies a pull to the toe end of the upper by means of hand pincers to tension the upper somewhat lengthwise of the last and drives a tack through the margin of the toe end of the upper to hold the upper in such tensioned condition. He then mounts the work on the last pin while the jack is in its forwardly inclined position and while the auxiliary heel band occupies the position illustrated by broken lines in Fig. 1. The operator next adjusts the extreme heel end of the upper into the desired position heightwise of the last and, by means of hand pincers or otherwise, applies an upward pull to the opposite sides of the upper just in front of the heel-breast line of the shoe to position those portions at the proper height and cause them to lie snugly against the sides of the last. While holding the upper in such adjusted relation to the last the operator depresses the treadle 52 to move the auxiliary heel band I4 first forwardly lengthwise of the last, and by further depression of the treadle forces the forward end portions of the band inwardly into clamping relation to the upper at the sides of the last. By its forward movement the band serves to press the upper closely against the heel-end face of the last, especially near the top of the counter, and to work the upper forwardly along the sides of the heel portion of the last. As the forward end portions of the band are closed inwardly the band engages the sides of the upper first at substantial distances from the edge of the last bottom and thenprogressively nearer the last bottom to insure that the upper will be clamped smoothly against the last without objectionable wrinkles.
plying it to the shoe partake of the upward movement of the jack post, since they are supported by the plate l2 on the post, and they also partake of such tipping movement of the shoe in one direction or another, or such bodilylateral movement of the shoe, as the operator may effect in the manner hereinbefore described to position the shoe in proper relation to the lasting instrumentalities. It will be understood that the auxiliary heel band, in addition to holding the heel end of the upper in proper relation to the last during the movements of the jack, also serves as means for shaping the heel portion of the upper preliminarily about the last before the main heel band 2 becomes effective to perfect the shaping of the upper by its further clamping pressure about the heel end of the last. After the work has been properly positioned, the operator starts the power operation of the machine and the heelend lasting operation is then performed in the manner characteristic of machines of the illustrated type. When the lasting operation has been completed the jack is permitted to swing forwardly to its initial position, and in this swinging movement of the jack the latch 54 is operatedby the lever 59 torelease the mechanism which operatesthe auxiliary heel band and permit this mechanism and the band to return to their starting positions.
While the inventionhas been described more particularly with reference to the lasting of stitchdown shoes, it is contemplated that it may be used also with beneficial results in the lasting of the heel ends of shoes of other kinds which have not been previously lasted along the sides' of the shank portion, and that under some conditions, moreover, its use may be beneficial even though the shoes have already been lasted at the shank portion.
Havingv described the invention, what we claim- 2. In a machine for operating'on shoes, the
combination with a heel band for embracing and clamping an upp erabout the heel end of a last, and a work support movable from a work-receiving position to present the heel end. of the last and upper within said band, of an auxiliary clamping device for clamping the heel end of the upper against the end and side faces of the last, and means for operating said auxiliary clamping device to clamp the upper first against the end face of the last and then against the side faces of the last prior to the work-presenting movement of the work support.
3. In a machine for operating on shoes, the combination with a heel band for embracing and clamping an upper about the heel end of a last against the end and side faces of the last, and a Work support movable from. a work-receiving position to present the heel end of the last and upper within said band, of an auxiliary band ar- I ranged to be positioned between said first-named band and the upper for also embracing and Y clamping the upper about the heel end of the last against the end and side faces of the last, and means for moving said auxiliary band lengthwise of the last to clamp the upper against the end face of the last and for also moving its ends inwardly to clamp the upper against the side faces of the last prior to the work-presenting movement of the work support.
4. In a machine for operating on shoes, the combination with a heel band for embracing and clamping an upper about the heel end of a last, and a work support movable from a work-receiving position to present the. heel end of the last and upper within said band, of an auxiliary band for also embracing and clamping the upper about the heel end of the last, and means connected to the ends of said auxiliary band for first moving it lengthwise of the last and then moving its ends inwardly toward the sides of the last prior to the work-presenting movement of the work support.
5.'In a machine for operating on shoes, the combination with a heel band for embracing and clamping an upper about the heel end of a last against the end and side faces, of the last, and a work support movable from a work-receiving position to present the heel end of the last and upper within said band, of an auxiliary band arranged to be positioned between said firstnamed band and the upper for also embracing and clamping the upper about the heel end of the last against the end and side faces of the last, and mechanism carried by the work support and connected to the ends of said auxiliary band for applying it to the upper.
6. In a machine for operating on shoes, the combination with a heel band for embracing and clamping an upper about the heel end of a last, and a work support movable from a work-receiving position to present the heel end of the last and upper within said band, of an auxiliary band arranged to be positioned between said firstnamed band and the upper for also embracing and clamping the upper about the heel end of the last, said auxiliary band having end portions arranged to extend toward the toe end of the last beyond the portions of the upper embraced by said first-named band, members carried by the'work support and connected to said end portions of the-auxiliary band,"and means for operating said members to move the auxiliary band lengthwise of the last and to force its end portions inwardly toward thesides of the last.
-7. In a'machine for operating on shoes, the combination. with a heel band for" embracing and clamping an upper about the heel end of a last, and a work support movable from a work-receiving position to present the heel end of the last and upper within said band, of an auxiliary band arranged to be positioned between said firstnarned band and the upper for also embracing and clamping'the upper about the heel end of the last, and mechanism. carried by the workclamping an upper about the heel end of a last,
of an auxiliary band arranged to be positioned between said first-named band and the upper for also embracing and clamping the upper about the heel end of the last, said auxiliary band having end portions arranged to extend toward the toe end of the last beyond the portions of the upper embraced by said first-named band, and means connected to said end portions for applying the auxiliary bandto the upper.
9. In a machine for operating on shoes, the combination with a heel band for embracing and clamping an upper about the heel end of a last, of an auxiliary band arranged to be positioned between said first-named band and the upper for also embracing and clamping the heel end of the upper, said auxiliary band having an upper-clamping portion formed to extend continuous'ly around the heel end of the last in a location spaced a substantial distance heightthe edge of the last bottom, and means for ap- I plying said auxiliary band to the upper before the upper is clamped by said first-named band.
10. In a machine for operating on shoes, the combination with a heel band for embracing and clamp-ing an upper about the heel end of a last,
and a work support movable to carry the last and upper lengthwise to a position within said band, of an auxiliary band arranged to be positioned between said first-named band andthe upper for also embracing and clamping the upper about the heel end of the last, said auxiliary band having an upper-clamping portion formed to extend continuously around the'heel end of the last in a location spaced a substantial distance heightwise ofthe last from the edge of the last bottom and also having wings arranged to project heelwardly in spaced relation to said continuous portion for clamping the upper in locations nearer the edge of the last bottom, and means for applying said auxiliary band to the upper before the last and upper are carried into position to be clamped by said firstnarned band. 1
11. In a machine for operating on shoes, a band for embracing and clamping an upper about the heel end of a last, said band having an upperclamping portion formed toextend continuously around the heel. end of the last in a location spaced a substantial distance heightwise of the last'from the edge of the last bottom and also having wings arranged to project from its end portions heelwardly for clamping the upper in locations between said continuous portion and the edge of the last bottom.
12. In a machine for operating on shoes, a band for embracing and clamping an upper about the heel end of a last, said band having an upper-clamping portion formed to extend continuously around the heel end of the last in a location spaced a substantial distance heightwise of the last from the edge of the last bottom and also having resilient end portions normally flaring in such relation to each other as to engage the upper first at a distance from the edge of the last bottom and then nearer said edge as said end portions are forced inwardly toward the sides of the last, said end portions of the band being provided With wings arranged to project heelwardly therefrom for clamping the upper in locations between said continuous portion and the edge of the last bottom.
13. In a-machine for operating on shoes, the
combination with means for operating on the heel end of an upper on a last, of a jack movable to carry the last and upper lengthwise toward said operating means and including an upwardly extending post movable upward relatively to the other portions of the jack to lift the work, a device for clamping the upper against the heel end of the last, and mechanism movable to force said device against the upper prior to the movement of the jack, said mechanism being supported on said post so as to move upwardly with the post.
- 14. In a machine for operating on shoes, the combination with means for operating on the heel end of an upper on a last, of a jack movable to carry the last and upper lengthwise toward said operating means and including an upwardly extending post movable upward relatively to the other portions of the jack to lift the work, a band for embracing and clamping the upper about the heel end of the last, and mechanism connected tothe ends of said band for supporting it and for applying it to the upper, said mechanism being supported on said post so as to move upwardly with the post.
15. In a machine for operating on shoes, the combination with means for operating on the heel end of an upper on a last, of a jack movable to carry the last and upper toward said operating means and including an upwardly extending post having at its upper end a heel-end support movable with the last relatively to the post to permit adjustment of the last, a device for clamping the upper against the heel end of the last, and mechanism movable to force said device against the upper, said mechanism being mounted on said heel-end support so as to partake of the adjusting movements of the last.
16. In a machine for operating on shoes, the combination with means for operating on the heel end of an upper on a last, of a jack movable to carry the last and upper toward said operating means and including an upwardly extending post having at its upper end a heel-end support mounted to tip with the last relatively to the post to permit adjustment of the last, a band for embracing and clamping the upper about the heel end of the last, and mechanism comprising members connected to the ends of said band and movable lengthwise and widthwise of the last to force the band against the upper, said mechanism being mounted on said heel-end support so as to partake of the tipping movements of the last.
17. In a machine for operating on shoes, the combination with means for operating on the heel end of an upper on a last, of a work support movable to carry the work toward said operating means, a band for embracing and clamping the upper about the heel end of the last, mechanism carried by said work support for applying said band in clamping relation to the upper, a latch for retaining said mechanism in bandapplying position, a lever carried by the work support, and relatively stationary means arranged to operate said lever to withdraw the latch from operative position in response to return movement of the work support.
18. In a machine for operating on shoes, the
combination with a band for embracing and clamping an upper about an endof a last, of
'rnechanism for moving said band lengthwise of 19. In a machine for operating on shoes, the
combination with a band for embracing and clamping an upper about an end of a last, of members connected to the ends of said band, mechanism for moving said members lengthwise of the last to cause the band to clamp the upper against the end face of the last, and additional mechanism operative in response to resistance of the last to the movement of said members lengthwise thereof to move the members widthwise of the last and thereby cause the band to clamp the upper against the side faces of the last.
20. In a machine for operating on shoes, the combination with a band for embracing and clamping an upper about an end of a last, of members connected to the ends of .said band, mechanism for moving said members lengthwise of the last to cause the band to clamp the upper againstthe end face of the last, spring-controlled devices yieldingly movable in response to resistance of the last to the movement of said members lengthwise thereof, and means for moving said members widthwise of the last by the movements of said devices to cause the band to clamp the upper against the side faces of the last.
21. In a machine for operating on shoes, the combination with a band for embracing and clamping an upper about an end of a last, of levers arranged to extend heightwise of the last and connected to the ends of said band, mechanism for swinging said levers lengthwise of the last to cause the band to clamp the upper against the end face of the last, and additional mechanism arranged to act in response to resistance of the last to the swinging of the levers lengthwise thereof' to swing them widthwise of the last and thereby cause the band to clamp the upper against the side faces of the last.
22. In a machine for operating on shoes, the
combination with a band for embracing and ferent fulcrum to cause the band to clamp: the upper against the side faces of the last. 7
23. In a machine for operating on shoes, the combination with a band for embracing and clamping an upper about an end of a last, of members connected to the ends of said band, an operating lever, mechanism for Vmoving said members lengthwise of the last by swinging movement of said lever to cause the band to clamp the upper against the end face of the last, 7
and fulcrum means for said lever yieldingly movable in response to resistance or the last to the movement of said members lengthwise thereof, said members being movable widthwise of the .l last in response to the yielding movement of said fulcrum means to cause the band to clamp the upperagainst the side faces of the last.
24. In a machine for operating on shoes, the combination with a band for embracing and clamping an upper about an end of a last, of band-applying levers arranged to extend height- .wise of the last and connected to the ends of said band, an operating lever movable to swing said band-applying levers lengthwise of the last to cause the band to clamp the upper against the end face of the last, and fulcrum means for said operating lever yieldingly movable in revwise of the last and connected to the ends of said band, an operating lever movable to swing said band-applying levers lengthwise of the last to cause the band to clamp the upper against the end face of the last, and a toggle providing a fulcrum for said operating lever and yieldingly movable in a direction to straighten it in response to resistance of the last to the movement of the band lengthwise thereof, said toggle being arranged to act in its yielding movement on said band-applying levers to swing them widthwise of the last and thereby cause the band to clamp the upper against the side faces of the last.
JOHN WILLIAM PRATT. WILLIAM ARTHUR BARKER.
US262488A 1938-04-28 1939-03-17 Machine for operating on shoes Expired - Lifetime US2207819A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138810A (en) * 1962-01-26 1964-06-30 United Shoe Machinery Corp Heel end assembling and back part molding machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3138810A (en) * 1962-01-26 1964-06-30 United Shoe Machinery Corp Heel end assembling and back part molding machines

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