US1674059A - Manufacture of shoes - Google Patents

Manufacture of shoes Download PDF

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US1674059A
US1674059A US698099A US69809924A US1674059A US 1674059 A US1674059 A US 1674059A US 698099 A US698099 A US 698099A US 69809924 A US69809924 A US 69809924A US 1674059 A US1674059 A US 1674059A
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last
wipers
toe
shoe
pin
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US698099A
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Arthur F Pym
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United Shoe Machinery Corp
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United Shoe Machinery Corp
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Priority claimed from US83372A external-priority patent/US1692278A/en
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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
    • A43D21/127Lasting machines with lasting clamps, shoe-shaped clamps, pincers, wipers, stretching straps or the like for forming the toe or heel parts of the last with wipers

Description

June 19, 1928.
. 1,674,059. A. F. PYM
MANUFACTURE OF SHOES Filed March 10, 1924 5 Sheets-Sheet ,l
pvt/EN ER June '19, 1928.
I an? E Min //V l/E N TUE 3 Sheets-Sheet, 2
June 19, 1928. 1,674,059
' A. F. PYM
MANUFACTURE OF SHOES Filqd March 10, 1924 3 Sheets-Sheet 3 Patented June 19, 1928.
UNITED STATES PATENT oFFIc-E.
ARTHUR F. PYM, OF MARBLEHEAD, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.
MANUFACTURE OF SHOES.
Application filed March 10, 1924. Serial No. 698,099.
This invention relates to the manufacture of shoes, and has for one of its principal objects to provide a better method and better means than heretofore for positioning a last and its shoe materials relatively to means that operates upon the materials. The in vention is herein illustrated in its application to the toe lasting operation, for which it has very important advantages, but it will be recognized that in many of its aspects the invention is not limited to that particular part of shoe manufacture.
In lasting the toe of a shoe" by the use of toe-embracing wipers shaped to conform substantially to the contour of the toe, satisfactory results require a high degree of accuracy in the positioning of the shoe and the wipers relatively to each other. In lasting machines of the bed type, for example, the shoe is usually held firmly in position for lasting by shoe positioning means comprising a heel support, a toe rest and a holddown, and one or more of the elements of the shoe positioning means must be adjusted by the operator in accordance with the style and the size of the shoe and in accordance with whether the shoe is a right or a left. Thereafter the wipers also must be adjusted in various ways, as determined principally by trial, so that when they are advanced and closed they will conform accurately to the contour of the shoe and will wipe the upper over the last and the insole with adequate pressures on different portions of the shoe. All these adjustments require much of the operators time, and the quality of the results obtained depends also largely upon the operators care and judgment, since there is nothing affording any very definite indication of what relation between the different parts is the best for the work in hand. Moreover, even after the machine has been adjusted for a particular line of shoes, no two of the shoes are likely to be clamped and held in exactly the same position, so that the operator must keep the matter of adjustment constantly in mind and must frequently make one or more readjustments to meet the requirements of particular shoes.
The present invention aims, in one important aspect, to do away with such lack of uniformity and such deviations from the ideal standard of workmanship as have been almost inevitable heretofore even with the best operators, while eliminating the need for a high degree of skill on the part of the operator, and at the same time great-1y to increase the speed of the work, as well as to simplify the construction of the machinery. T o accomplish this the invention provides'a novel method and means for positioning the last and its shoe materials in a quick and accurate manner by the interengagement, in a novel cooperative relation, of a last posi tioning surface on the machine in predetermined relation to the means that operates on the shoe and a positioning surface on the last bearing a correspondingly predetermined re lation to the contour of the shoe. One very important requirement for satisfactory results in toe lasting is that the edges of the wipers, as the wipers are advanced and closed about the toe, shall substantially fit the con- 7 tour of the toe at what may be termed the critical point in the lasting operation, namely that point where the wipers are in position to begin to wipe the upper materials inwardly over the bottom of the last. By the present invention, in accordance with the manner of carrying it into effect herein illus-' .trate-d, accuracy in this respect is insured,
independently of any particular care or attention on the operators part, by providing a last positioning hole in the bottom of the forcpart of the last and by utilizing a pin to position the last by engaging it in said hole, the hole bearing the same predetermined relation to the contour of the lateral periphery of the toe that the pin as positioned in the machine bears to the edges of the wipers when the wipers are in position for their edges to conform to the contour of the toe. As herein illustrated the pin is mounted on a holddown member against which the shoe is clamped and supported by means of a toe rest to hold it against the lit shoe into the right. position. This has the advantage that it serves further to relieve the operator of the necessity for exercising any special care in presenting the work, while permitting the use of very simple means to accomplish the desired results. If the invention is utilized in operating on work where the upper is to be lasted over an insole on the bottom of the last, the insole will be provided with a hole in position to register with the hole in the last when the insole is properly ositioned on the last, as more fully hereina ter explained.
A further important requirement for succcssful results in some shoe manufacturing operations is that there be a proper angular relation between the bottom face of the last and the means that operates on the work. In toe lasting, for example, the wipers should operate to overwipe the upper in a plane substantially or approximately parallel to the bottom face of the toe portion of the last, although it may be preferable on same work that the wipers operate in such relation to the shoe as to wipe the upper inwardly with relatively greater pressure in one or more locations, for example at the end of the toe or at the outer side of the toe. The present invention further provides that in this respect, as well as in the others hereinbcfore set forth, the last andits shoe will be accurately positioned without the exercise of any special care on the part of the workman. As herein exemplified, the angular relation between the bottom face of the last and the operating means, i. e., the wipers. is determined principally by the pin in cooperation with the hole in the last, and for this and other purposes the pin is of substantially the same diameter as the hole and the latter is formed with reference to an axis so determined as to position the last at the angle desired, having regard to the relation that the axis of the pin, as determined by the machine, bears to the plane of the wipers. To assist in determining the relation of the bottom face of the last to the plane of the wipers further positioning surfaces also may be provided. As herein illustrated a metal bushing inserted in the last to serve as a hearing member for the pin is provided with a flange having its outer end face so formed as to serve as a positioning surface in cooperation with a corresponding positioning surface on the holddown member. This surface on the holddown member may be. for example, parallel to the plane of the wipers, and it will be understood that the end face of the bushing will be in the same angular relation to the axis of the hole in the last that this surface on the holddown member bears to the axis of the pin. The shoe will thus be supported with the insole between these two positioning surfaces, and it will be evident that in this way the height of the shoe relatively to the wipers will likewise be accurately determined.
One manner of practicing the novel method of this invention, and various novel features of means that may be utilized in practicing the method, will now be more particularly set forth by reference to the accompanying drawings and pointed out in the claims.
In the drawings,
Fig. l is a side elevation of a toe lasting machine that may be utilized in practicing the method of the invention and in which novel features of the invention are embodied;
Fig. 2 is a plan view of the machine;
Fig. 3 is a section on the line 3-3 of Fig. 2;
Fig. 4 is a perspective view of the toe of a shoe before lasting, together with a portion of the holddown partially inverted to show its construction more clearly;
Fig. 5 is a plan view of the forepart of the last, illustrating diagrammatically one way in which the location of the hole in the last may be determined;
Fig. 6 is a vertical section of the forepart of a last like that of Fig. 5 with the shoe materials shown in lasted condition; and
Figs. 7 and 8 are longitudinal sections through alternative forms of insoles.
The machine comprises a base 2 having upwardly extending spaced arms 4 on the outer ends of which are pivoted at 6 a pair of arms 8 which are formed as extensions of a wiper head 10. The wiper head 10 carries toe-embracing wipers 12, as will bemore particularly explained, and the head 10 is connected by a link 14 to a double-acting treadle 16 whereby the head may be swung upwardly about its pivots (3 to cause the wipers to wipe the upper ot the shoe heightwise of the toe, and may be swung downwardly to increase the pressure of the wipers on the upper after the upper has been wiped inwardly over the feather of the insole. The weight of the head 10 and the parts supported thereon positions the treadle 16 initially. in engagement with an adjustable stop screw 18, and an additional stop screw 20 also is provided to limit adjustahly the upwiping movement of the wipers so as to afford the operator a definite indication of the proper position of the wipers for the overwi 'iing operation.
The wipers 12 are detachahly secured to wiper holders 22 which are mounted on an extension 24 of a sleeve 26 (Fig. 3) guided for lengthwise movement in the head 10. The extension 24 is provided with an arcuate guideway, and the wiper holders 22 have cooperating guide ribs 28, so arranged that the wipers have closing movements laterally of the shoe about a center or axis located substantially at the meeting point of the edges of the wipers at the end of the toe. For imparting the closing movements to the wipers the wiper holders 22 are provided with rack teeth 30 in engagement with pinions 32 which are operated by a double rack member 34 connected by a pin 36 to a wiper closing sleeve 38 guided in the sleeve 26.
The wiper closing sleeve 38 is operated yieldingly by a plunger 40 slidingly mounted in a bushing 42 and in a cylindrical recess 44 in the sleeve 38, the plunger being arranged to impart forward movement to the sleeve through a comparatively stiff spring 46 which engages at one end a shoulder on the plunger and at the other end an adjustable bushing 48 which is threaded in the sleeve 38. The bushing 48 is splined on the plunger 40, so that by turning the plunger, as by use of a knurled head 50, the bushing is adjusted to change as desired the compression of the sprin 46. The wipers are thus permitted to yield, for example in upwiping the toe. To limit the extent to which they may yield, in order to provide for adequate overwiping pressure, lock nuts 52 on the plunger 40 are arranged to engage the bushing 42. i The plunger 40 is operated by a hand lever 54 pivoted at 56 on the head 10, the leverbeing connected by a link 58 to anut 60 (Fig. 3) which is threaded on a sleeve 62 mounted on the plunger 40 between the head 50 and a fixed washer 64. The threaded sleeve 62 may thus be utilized to adjust the plunger 40 to swing the wipers about their center without advancing them, and thereby to determine their proper starting position, the sleeve being held normally from turning by means of a friction member 66 (Fig. 2).
The hand lever 54 is utilized to advance the wipers lengthwise of the shoe as well as to close them. and for this purpose it is connected by a link 68, pivoted at 70 on an extension of thelever. to a lever 72 which is pivoted at 7 4 on the head 10 and is connected in turn to the wiper advancing sleeve 26. The connections between the lever 72 and the sleeve 26 comprise a block 76 secured to the sleeve 26 and guided in a slot 78 in thehead 10, this block having thereon a pin 80 which carries a bearing block 82 slidably mounted in a slot in the end of the lever 72. It will be evident that as the hand lever 54 is operated to advance the plunger 40 and thus to impart swinging movements to the WlPBIStO close them laterally of the toe. it also serves through the connections described to impart to the sleeve 26 wiper-advancing movement the extent of which bears a predetermined relation to the extent of the closing movement of the wipers.
It is usually desired, particularly on welt work, to wipethe upper inwardly for the same distance from the edge of the shoe bot- .tom at the sides of the toe as at the end of the toe. It is, moreover, a well-known fact that to accomplish this result a different extent of angular swinging movement of the wipers, for the same extent of bodily advancing movement, is required for toes of materially different shapes, for example for pointed toes as compared with blunt toes. It is accordingly desirable to vary relatively the rates of the advancing and closing movements of the wipers, and the machine herein shown is provided with means whereby such a variation may be conveniently effected. To this end, there is provided means for adjuting the link 68 lengthwise of the lever 72 to change the effective length of this lever. It will be seen by reference to Fig. 2 that the link 68 is connected by a pivot pin 83 to a block 84 slidably mounted in a curved slot 86 in the lever 72. On the head of the pin 83 is a slide 87 mounted in a guideway extending transversely of a block 7 88 which is mounted on an adjusting screw 90 swiveled in bearing members 92 on the lever 72. By turning the screw 90 the link 68 may thus be swung about its pivot 70 and its point of connection to the lever 72 adjusted lengthwise of the lever. It is de sirablc that such an adjustment be made without affecting the position of the wipers relatively to the shoe at the critical point in the lasting operation, that is, when the wipers are closed about the toe in position to begin their overwiping movements, and accordingly the construction is so designed that with the Wipers in this position the center of curvature of the slot 86 in the lever 72 coincides with the pivotal axis 70 of the link 68. It will be evident that this adjusting means may be utilized not only to set the parts for wiping the upper inwardly to the same distance all round the toe, but also, if desired, for wiping it farther inwardly, for example, at the sides than at the endof the toe.
Novel features* of the wiper-operating means hereinabovc described are claimed in a divisional application Serial No. 83,372, filed on January 23, 1926.
For positioning the shoe relatively to the wipers a holddown arm 94 is secured to a bracket 96 which is fast on the frame of the machine, this arm having integral therewith or fast thereon a holddown member 98 which, in the construction shown, has a forwardly extending portion to engage the insole adjacent to its rib at the end of the toe and a projection 100 for engaging the bottom.
face of the insole at a distance from the end of the toe, for example at or near the plane of the tip seam. The holddown is thus rigidly maintained in a fixed position, and cooperating with it is a toe rest 102 supported directly under the projection 100 by two parallel links 104 and 106, the link 106-being extended to provide a lever arm connected by a link 108 to a treadle 110 which is normally upheld by a spring 112. Depression of the treadle 110 will thus raise the toe rest 102 to clamp the shoe against the holddown. The treadle is maintained in any position to which it is depressed by means of a pawl 113 in engagement with ratchet teeth 114; on the frame, the pawl having a tripping extension 116 which may be engaged by the operatorsfoot to release the treadle.
For determining accurately the proper position of the last and the shoe relatively to the wipers and for supporting the work against the thrust of the wipers, the holddown member 98 is provided with a downwardly extending pin 118, and the last is provided with a cooperating recess or hole 120 which, in the construction shown, is a hole formed in a metal bushing 122 tightly seated within a socket formed in the wooden last a to receive it. To accomplish the desired result, the hole 120 in the last should hear the same relation to the contour of the toe of the shoe (i. e., the toe of the last with suitable allowance, it may be, for the thickness of the upper materials) that the pin 118 bears to the edges of the wipers when these edges are in position substantially to fit said contour. The wipers are formed, as usual, so that their edges will substantially fit the contour of the too when they are properly closed about the toe, and there is thus a certain definite relation between the last and the wipers which is the proper one at the critical point of the lastingoperation. As long as the proper relation is determined between the wipers, the pin 118, and the hole 120 in the last, it is not necessary that the pin be located precisely as shown in the drawings, but it is convenient and desirable to locate it, as illustrated, on what may be termed the median line A of the wipers, namely that line on which the meeting point of the wiper edges or the axis of their closing movementtravels in the bodily advance of the wipers lengthwise of the shoe. With the location of the pin determined in relation to wipers formed to fit a particular style and size of last, one way of determining the proper location for the hole in the last is to advance and close the wipers about the toe of the last until they substantially fit the last, thus positioning the last relatively to the pin, or to a member located where the pin would be, and thereby indicating where the hole should he to receive the pin. The proper location for the hole in a last of any particular size and style having thus been determined, the hole will, of course, be in the same location in all lasts of that size and style.
As a practical matter, however, it may be preferable to determine the location for the hole directly from the contour of the last. It follows from what has been said with reference to the location of the pin that the hole may be variously located, provided the pin and the wipers are in corresponding relation to each other. It is preferable, however, that the hole be substantially equi' distant from the opposite sides of the last, partly for the sake of facility in determining its location in difierent lasts and partly for the sake of symmetry and balance. The proper location for the hole, relatively to the sides of the last may be found as illustrated diagrammatically in Fig. 5, by taking the middle points of two lines C and 1), herein shown as parallel, extending transversely of the bottom of the last at arbitrarily selected distances from the end of the toe to define the locus of what may be termed the median line B of the torepart of the last. The axis of the hole 120 will then be located on this line, or in predetermined relation to it, at a selected distance from the end of the toe. Having regard to the position of the pin 118 on the machine, this distance from the end of the toe of the last will be the distance of the axis of the pin 118 from the meeting point of the edges of the wipers when the wipers are in fully open and retracted position, less the distance that the wipers must advance to bring said point to the edge of the shoe bottom. For convenience in changing from one size or style of shoe to another, it is contemplated that the holes in the different lasts will be at the same distance from the ends of the toes. In Fig. 5 the hole is shown as located at the point of intersection of the lines B and I), but it will be evident that it is not essential that the hole be located on the line 1). Moreover, as above intimated. the hole might be at one side of the line B if the pin were correspondingly positioned relatively to the wipers, although it is preferable, for the reasons stated, that the hole be substantially midway between the sides of the last.
The location of the hole in the last being thus determined in the manner illustrated in Fig. 5, and the pin having a predetermined location in the machine, preferably midway between the opposite sides of the wiper mechanism, as shown, the wipers will be so designed for attachment to the wiper holders that when they are advanced a predetermined distance their corresponding closing movement will bring them into position to tit substantially the contour of the shoe at th opposite sides of the toe. Conveniently this may he done by the use of a pattern having a center line corresponding to the center line B of the last, the method of designing and forming wipers by the use of such patterns being well known. The median line B of the last and the median line of the wipers will then substantially coincide when the wipers are in position closely to embrace the toe of the shoe at the edge of the shoe bottom. It will be evident that the position of the line B on the last would vary somewhat as the positions of the lines C and D were varied, this being immaterial as long as the wipers are properly designed to correspond. V
It will be evident that the procedure above described for determining the location of the hole in the last has not taken into account any particular relation between the plane of the wipers and the bottom face of the last. The pin will preferably fit closely in the hole in the last, and with the position of the pin relatively to the wipers predetermined, the relation of the last to the plane of the wipers with respect to tipping movement about axes extending lengthwise and laterally of the last will therefore be substantially determined by the direction of the axis of the hole in the last. Generally speaking, th wipers should operate to wipe the upper inwardly over the insole in a plane substantially or approximately parallel to the bottom face of the toe portion of the last. It is sometimes desired, however, that the wipers shall bear harder on the upper materials at the end of the toe than at the sides of the toe, or that they shall bear harder at the outer side of the toe than at the inner side. Such considerations will be taken into account in boring the hole in the last to receive the metal bushing. The di rection of the hole may be, for example, perpendicular to a plane determined by three points on the bottom of the last, one at the end of the toe and the others at the opposite sides of the toe respectively, or in any desired angular relation tothe plane thus determined. i
It may be desirable to assist in determining the relation between the bottom face of the last and the plane of the wipers by the use of another positioning surface on the last, in cooperation, for example. with the holddown member 98, and for this purpose a surface 124 on the flanged head of the bushing 122 may conveniently be utilized in cooperation with a surface on the projection 100 about the pin 118. The lower face of the projection 100 will preferably be parallel to the plane of the wipers, and therefore perpendicular to the axis of the pin if the pin is perpendicular to this plane, and the surface 1% will in that case be perpendicular toth axis of the hole 120 so as to lie parallel to the lower surface of the projection 100 when the last is in the position determined by the direction of the hole. It may happen, therefore, that the surface 124 Will not be exactly parallel to the surface of adjacent portions of the bottom of the last.,., It will be understood that when the shoeis pressed up against the holddown by the toe rest 102. the projection 100, in 'cooperation with the surface 124 of the bushing 122, will determine the height of the last relatively to the wipers.
In order to position the work in the manner above explained, it is necessary that the insole b be formed with a hole to register with the hole in the last. Such a hole in the insole should bear the same relation to the edge contour of the insole that the hole in the last bears to the edge contour of the last bottom, and the location of the hole in the insole may thus be readily determinedin the same manner as the hole in the corresponding last. It will be evident that such a hole in the insole will be of material assistance in positioning the insole accurately on the bottom of the last prior to the toe lasting operation. While the hole in the last should preferably be located at such a distance from the end of the toe that the pin will be positioned substantially opposite to the toe rest, where the machine is equipped with a toe rest, this is not inconsistent with locating the hole, as shown, near enough to the end of the toe to bring the hole in the insole well out of sight in the finished shoe and to position it substantially between the ball and the toes of the foot where it will not be felt by the wearer of the shoe. With the hole in the insole in such a location, it may be disregarded after the lasting operation, except perhaps in that type of shoe in which a plastic filler is utilized, andin such case the hole may be covered in various ways, if necessary, to keep the filler from working into the interior of the shoe. For example, a piece of canvas 0 (Fig. 6) may be applied over the hole on the bottom face of the insole, or the hole may be tapered from the bottom face oft-he insole inwardly and a tapered plug d inserted, as illustrated in Fig. 7. Alternatively a flap 2 having a tapered plu thereon may be turned up in forming t e hole (Fig. 8), and this flap turned down again after the lasting operation. Experience, however, has shown that it is practical to utilize a hole so small that it is unnecessary to cover or plug it in order to prevent the filler from working through.
From the foregoing description it will be "understood that by the present invention the operator of the lasting machine is relieved of practically all concern as to the positioning of the shoe and the adjustment of the wipers, and that the quality of the results is not dependent to any material extent on the care and judgment of the operator in this respect. All that the operator has to do in positioning the work is to mount the. last on the pin 118 andto raise the toe rest, -assurance being aiforded that, with such slight turning movement as the last may receive in response to pressure of the wipers on the sides of the toe, the last will be in the right relation to the wipers for thebest results in the lasting operation. In changing from rights to lefts, or from one style of shoe to another, all that the operator need do is to detach the wipers and substitute those that are specially designed for the line of shoes on which the machine is to operate, the holes in the different lasts having been so formed in relation to the corresponding wipers and to the pin 118 that the shoes will be positioned in the right relation to their wipers.
It will be understood that in the use of the particular machine shown, the wipers will be advanced and closed about the toe by the use of the hand lever 54 and will then be raised to wipe the upper heightwise of the toe by the use of the treadle 16. When the stop 20 indicates that the wipers meat the proper height to begin the overwiping operation, they will be further advanced and closed by the use of the hand lever 54, and may then be depressed by the treadle to increase their pressure on the bottom of the shoe. Thereafter the upper will be fastened in lasted position by a toe binding wire or by other means in accordance with the common practice.
Another advantage in positioning the work in the manner herein illustrated is that, with the pin closely fitting the hole in the last, the last will remain in the position in which it is presented even if the operator releases it before raising the toe rest. In the particulariconstruction shown this is due to the fact that the center of gravity of the shoe is at the rear of the pin and the shoe thus tends to tip with a resulting cramping action on the pin. The operator is thus afforded greater freedom in the use of his hands for other purposes than if he had to support the shoe until it was clamped.
While the invention is herein illustrated in its application to the lasting of welt shoes, it will be understood that it is not limited to welt shoe work. It will also be understood that, while the invention is illustrated by reference to a manually operated machine, it is not thus limited, since it would have very important advantages as applied to power lasting where the operator has comparatively little opportunity to make adjustments as determined by observation of the work in the course of'the operation of the machine.
Having explained the nature of the invention and set forth fully how it may be practiced, what I claim as new and desire to secure by Letters Patent of the United States is:
1. That improvement in methods of positioning a last and its shoe materials in a lasting machine relatively to wipers that close about an end of the shoe and are shaped to conform substantially to the contour of the end of the shoe when they are closed into position to embrace the end of the shoe, which consists in determining on the bottom of the last and on the machine respectively points that coincide when the last and the wipers are in the relation that they assume with the wipers in position to conform to the contour of the shoe, providing on the last and on the machine in the locations tluisdetermined positioning surfaces extending respectively heightwise of the last and in a direction transverse to the plane of the wipers, and positioning the last relatively to the wipers by engaging said positioning surfaces with each other.
2. That improvement in methods of positioning a last and its shoe materials in a lasting machine relatively to wipers that close about an end of the shoe and are shaped to conform substantially to the contour of the end of the shoe when they are closed into position to embrace the end of the shoe, which consists in determining on the bottom of the last and on the machine points that bear similar relations respectively to the contour of the end of the shoe and to the edges of the wipers when the last and the wipers are in the relation that they assume with the wipers in position to conform to the contour of the shoe, providing at one of said points a positioning pin and at the othcrof said points a cooperating hole to receive the pin, and positioning the last relatively to the wipers by bringing said pin and hole into registry with each other.
3. That movement in methods of positioning a last and its shoe materials in a lasting machine relatively to wipers that close about the toe of the shoe and are shaped to conform substantially to the contour of the toe when they are closed into position to embrace the toe, which consists in providing on the forepart of the last and on the machine positioning surfaces extending heightwise of the last and transversely of the plane of the wipers and so located as to bear similar relations respectively to the contour of the toe and to the edges of the wipers when the wipers are in position to conform to the contour of the toe, and positioning the last relatively to the wipers by engaging said positioning surfaces with each other.
4. That improvement in methods of positioning a last and its shoe materials in a lasting machine relatively to end-embracing wipers, which consists in providing the machine with a pin extending in predetermined angular relation to the plane of the wipers, providing in the bottom of the last a hole of substantially the same diameter as said pin to receive the pin with the axis of the hole extending in an angular relation to the bottom face of the last determined with reference to the relation desired between said face and the plane of the wipers, and utilizing said pin and hole to position the last relatively to the wipers.
5. That improvement in methods of positioning a last and its shoe materials in a lasting machine relatively to toe-embracing wipers, which consists in providing the machine with a pin extending in predetermined angular relation to the plane of the wipers, determining on the bottom of the forepart of the last a point in alinement with the axis of said pin when the last and the wipers are in the relation that they assume with the wipers embracing the toe at the edge of the shoe bottom, providing the last with a hole of substantially the same diameter as said pin with its axis located at the point thus determined and extending in an angular relation to the bottom face of the forepart of the last determined with reference to the relation desired between said face and the plane of the wipers, and utilizing said pin and hole to positlon the last relatively to the wipers.
6. That improvement in methods of positioning a last and its shoe materials in a lasting machine relatively to wipers that close about the toe of the shoe and are shaped to conform substantially to the contour of the toe when they are closed into position to embrace the toe, which consists in determining on the machine the location of an axis extending transversely of the plane of the wipers, determining on the forepart of the last the location of an axis eoincident with the first-named axis when the last and the wipers are in the relation that they assume with the wipers in position to conform to the contour of the toe, providing at one of said locations a positioning pin and at the other of said locations a cooperating hole of substantially the same diameter as said pin to receive the pin, and positioning the last relatively to the wipers by bringing said pin and hole into registry with each other,
, 7. That improvement in methods of positioning a last and its shoe materials relatively to wipers that close about the toe of the shoe and are shaped to conform substantially to the contour of the toe when they are closed into position to embrace the toe, which consists in providing in the bottom of the forepart of the last a positioning recess in predetermined relation to the contour of the toe of the shoe, and engaging the last in said recess with a positioning pin so located as to bear the same relation to the edges of the wipers, when the wipers are in position to conform to the c ntour of the toe, that said recess bears to said contour.
8. That improvement in methods of positioning relatively to each other a last with its shoe materials and wipers that close about an end of the shoe and are shaped to conform substantially to the contour of the shoe when they are closed into position to embrace the end of the shoe, which consists in determining the location of a median line on the bottom of the last, providing wipers so designed that their median line will substantially coincide with said median line of the last when the wipers are closely embracing the end of the shoe at the edge of the shoe bottom, forming a last positioning hole in the bottom of the last in predetermined relation to its median line and at a predetermined distance from the end of the last, and utilizing a positioning pin in the same predetermined relation to the median line of the wipers to engage the last in'said hole and position itrelatively to the wipers.
9. That improvement in methods of positioning a last and its shoe materials relatively to wipers that close about the toe of the shoe and are shaped to conform substantially to the contour of the toe when they are closed into position to embrace the toe, which consists in forming a last positioning hole in the bottom of the forepart of the last on a line that is substantially coincident with the median line of the wipers when the wipers are in position to conform to the contour of the toe at the edge of the shoe bottom, providing a positioning pin at a predetermined point on the median line of the wipers for engaging the last in said hole, and positioning the lastby said pin and hole while permitting the last to turn about the pin to bring its'holelocating line into substantial coincidence with the me dian line of the wipers when the wipers are closed about the toe.
10. That improvement in methods of lasting shoes with wipers that close about the toe and are shaped to conform substantially to the contour of the toe when they are closed into position to embrace the toe, which consists in mounti'ng a last for turning movement about an axis located in such relation to the contour of the toe and tothe wipers that the wipers as they are closed will substantially fit the contour of the toe in one position of the last with reference to movement about said axis, bringing the last into that position by closing the wipers about the toe, and operating the wipers to last the toe.
11. That improvement in methods of lasting shoes in a lasting machine with wipers that close about the toe and are shaped to conform substantially to the contour of the toe when they are closed into position to embrace the toe, which consists in mounting the lastfor turning movement about an axis in its forepart extending in substantially perpendicular relation to the plane of the wipers and in such relation to the contour of the toe' and to the edges of the wipers that the wipers as they are closed will substantially fit the contour of the toe in one position of the last with reference to turning movement about said axis, bringing the last into that position by closing the wipers about the toe, and operating the wipers to last the toe.
12. That improvement in methods of lasting shoes in a lasting machine with wipers that close about the toe and are shaped to conform substantially to the contour of the toe when they are closed into position to embrace the toe, which consists in providing the machine and the forepart of the last respectively with apivot pin and a hole to reeeive the pin with the pin and the hole so located relatively to the edges of the wipers and to the contour of the toe of the shoe that the wipers as they are closed will substantially fit said contour in one position of the last with reference to turning movement about the axis of said pin, bringing the last into that position by closing the wipers about the toe, and operating the wipers to last the toe.
13. That improvement in methods of lasting welt shoes in a machine having wipers that close about the toe of the shoe and are shaped 'to conform substantially to the contour of the toe when they are closed into position to embrace the toe, which consists in determining on the bottom of the forepart of the last and on the machine points that coincide when the last and the wipers are in the relation that they assume with the wipers in position to conform to the contour of the shoe at the edge of the shoe bottom, providing at one of said points a positioning pin and at the other of said points a cooperating hole to receive the pin, positioning the last relatively to the wipers by bringing said pin and hole into registry with each other, and thereafter closing the wi ers about the toe and wiping the upper heightwise of the toe and into the angle between the feather and the rib of the insole.
14. That improvement in methods of lasting shoes of different sizes or styles which consists in providing last positioning holes in the bottoms of the different respective lasts on predetermined median lines and at equal distances from the ends of the different lasts, providing different pairs of relatively movable end-embracing wipers having wiping edges formed substantially to fit the ends of the different styles and sizes of shoes and so designed that their median lines will be substantially coincident with said median lines of the lasts when the wipers are closed about the ends of the shoes, and presenting the different lasts and their shoe materials to their wipers by mounting them on a positioning pin formed to engage the lasts in said holes and so positioned as to intersect the median line of any of the different styles or sizes of wipers.
15. That improvement in methods of positioning lasts of different sizes or styles in 21 lasting machine relatively to toe-embracing wipers, which consists in providing last positioning holes in the bottoms of the foreparts of the lasts at equal distances from the ends of the lasts irrespective of the size or style and in similar relations to the sides of the different lasts, and positioning the lasts relatively to their wipers by engaging them in said holes.
16. That improvement in methods of positioning lasts of different sizes or styles in a lasting machine relatively to toe-embracing wipers, which consists in providing last positioning holes in the bottoms of the foreparts of the lasts at equal distances from the ends of the lasts irrespective of the size or style and in similar relations to the sides of the different lasts, and utilizing a positioning pin the operative location of which in the machine is invariable for the different sizes or styles of lasts to position the lasts by engaging them in said holes.
17. That improvement in methods of positioning a last and its shoe materials relatively to end-embracing wipers, which consists in utilizing a positioning pin to engage the last and substantially fit within a hole formed in the bottom of the last and determining by the direction of said pin and hole the angular relation of the bottom face of the last to the plane of the wipers.
18. That improvement in methods of positioning a last and its shoe materials relatively to end-embracing wipers, which consists in providing a last positioning pin in predetermined relation to the edge contour of the wipers and with its axis in predetermined angular relation to the plane of the wipers, and providing in the bottom of the last a hole to fit the pin located in predetermined relation to the contour of the lateral periphery of the last with its axis at an angle to the bottom face of the last determined by reference to the angular relation of the pin to the plane of the wipers to determine thereby the relation between said plane and the bottom face of the last.
19. That improvement in methods of positioning a last and its shoe materials relatively to end-embracing wipers, which consists in providing onthe bottom portion of the last inside of the edge of the last bottom positioning surfaces extending respectively heightwise of the last and in substantially or approximately parallel relation to its bottom face, and providing in predetermined relation to the wipers positioning means so formed as to cooperate with both said surfaces to determine the relation of the bottom face of the last to the plane of the wipers.
20. That improvement in methods of positioning a last and its shoe materials in a lasting machine relatively to end-embracing wipers, which consists in mounting in the bottom of the last a bushing formed with a last positioning hole and having an end face in predetermined angular relation to the axis of said hole, and determining the angular relation of the last to the plane of the wipers by positioning surfaces on the machine cooperating with the surfaces in said hole and on the end face of the bushing.
21. That improvement in methods of positioning a last and its'shoe materials rela-. tively to means for operating on said materials, which consists in utilizing a member 'pro ect1ng within a recess. in the bottom ot the bottom of the last.
23. That improvement in methods of positioning a last and its-shoe materialsin a machine for operating on the forepart of the shoe, which consists in utilizing a pin fitting within a recess in the bottom of the forepart of the last and bearing a fixed angular relation both to the last and to the machine to determine the angular relation of the plane of the bottom of the forepart of the last to the machine during the operation of the machine. I
24. That improvement in methods of positionin-g a last and its shoe materials relatively to meansfor operating on said materials, which consists in mounting the last on a pin projecting into a recess in the bottom of the last in such relation to said recess and the last as to support the last if the workman releases it. i v
25. That improvement in methods of positioning a last and its shoe materials relatively to means for working the upper over the forepart of the last, which consists in forming a hole in the bottom of the forepart of the last, and mounting the last on a pin formed and positioned to fit substantially in said hole and to support the last independently of the hands of the workman.
26. In a machine for operating on shoe materials on a last, the combination with means for operating on said materials, of last positioning means comprising a pin formed to enter a hole in the bottom of the last, means for positioning the pin in predetermined relation to said 0 erating means, and means for holding the ast in the position determined by said pin and hole.
27. In a lasting machine, the combination with toe-embracing wipers, of last and shoe positioning means comprising a pin formed to enter a hole in the bottom of the forepart of the last, means for positioning said pin in a relation to the wipers corresponding to the relation of the hole in the last to the contour of the last, and means for holding the shoe in the position determined by said pin and hole.
28. In a lasting machine, the combination with toe-embracing wipers, of last and shoe positioning means comprising a pin mounted in predetermined relation to the wipers and formed to enter a hole in the bottom of the forepart of the last, and a toe rest for holding the shoe in position on said pin.
29. In a lasting machine, the combination with toe-embracing wipers, of a holddown and a toe rest arranged to clamp and support a shoe between them, and a pin positioned by said holddown and formed to en ter a hole in the forepart of the last to determine the position of the last relatively to the wipers.
30. In a lasting machine, the combination with toe-embracing wipers, of last and shoe positioning means comprising a stationary holddown and a cooperating movable toe rest together with a pin positioned by said holddown substantially opposite to the toe rest and formed to enter a hole in the bottom of the last.
31. In a lasting machine, the combinationwithend-embracing wipers, of last and shoe positioning means comprising a member formed to project through the insole and to engage a positioning surface on the last, and a support for maintaining the shoe in the position determined by said member.
32. In a lasting machine, the combination with toe-embracing wipers mounted to close about the toe of a shoe and having wiping edges formed substantially to fit the contour. of the toe, of means for positioning a last and its shoe materials for turning movement about an axis in its forepart in such relation to the contour of the toe and to the Wipers that pressure of the wipers about the toe will bring the shoe into proper position for the wipers to fit said contour.
33. In a lasting machine, the combination with toe-embracing wipers, of means comprising a pivot pin formed substantially to fit within a hole in the bottom of the forepart of the last to mount the last for turning movement about an axis in its forepart in response to closing pressures of the wipers.
34. In a lasting machine, the combination with toe-embracing wipers mounted to close about the toe of a shoe and having wiping edges formed substantially to fit the contour of the toe, of means comprising a pivot pin formed substantially to fit within a hole in the bottom of the forepart of the last to mount the last for turning movement about an axis in its forepart in response to closing pressures of the wipers, and a toe rest for supporting the shoe in position to turn about said axis.
35. In a lasting machine, the combination with end-embracing wipers mounted for closing movement's about an intermediate axis and for advancing movement lengthwise ot' the last, of last and shoe positioning means comprising a pin formed to enter a hole in the bottom of the last and positioned in line with the path of movement of the axis of the wipers in the advance of the wipers 36. In a lasting machine, the combination with end-emlu'acing wipers, of last and shoe positioning means comprising a member formed to project through a hole in the insole and to engage a positioning surface on the last to determine the angular relation of the bottom face of the last to the plane of the wipers.
37. In a lasting machine, the combination with end-embracing wipers. of last and shoe posititming means having positioning surfaces arranged in angular relation to each other to cooperate with the last in determining the angular relation of the shoe to the plane of the wipers, said means including a member formed to project through a hole in the insole and substantially to lit in a hole formed in the bottom of the last with its axis in predetermined angular relation to the bottom face of the last.
38. In a lasting machine, the combination with end-embracing wipers, of last and shoe positioning means comprising a pin formed to project through the insole and to enter a hole in the bottom of the last, a holddown having a positioning surface disposed about said pin for engaging the insole to assist in determining the angular relation of the shoe to the plane of the wipers, and means cooperating with said holddown to hold the shoe in the position thus determined.
39. In a lasting machine, the combination with endembracing wipers, of last and shoe positioning means comprising a holddown having a pin formed to enter a. hole in the bottom of the last, said holddown having also a raised portion about said pin for engaging the insole to assist in determining the angular relation of the shoe to the plane of the Wipers.
40. In a lasting machine, the combination with toe-embracing wipers, of last and shoe positioning means comprising a holddmvn having a pin formed to enter a hole in the bottom of the forepart of the last, said holddown having a raised portion adjacent to said pin for engaging the insole to assist in determining the angular relation of the shoe to the plane of the wipers and also a forwardly projecting portion for engaging the insole near the toe end of the last.
41. The combination of toeemlu'acing wipers having wiping edges formed substan tially to fit the contour of the toe. of a shoe when they are closed about the toe. a last positioning pin. means for positioning said pin in predetermined relation to the edges of the wipers with its axis subshmtiall perpendicular to the plane of the wipers, and a last having in the bottom of its forepart a hole formed to receive said pin and so located as to bear the same relation to the contour of the toe that the pin bears to the edges of the wipers when the wipers are closed about the toe.
42. The combination of toe-embracing wipers, a last positioning pin, means for positioning said pin in predetermined relation to :the edges of the wipers with its axis suhstantially perpendicular to the plane of the wipers, and a last having in the bottom of its forepart a hole of substantially the same diameter as said pin to receive the pin and determine thereby the angular relation of the bottom face of the forepart of the last to the plane of the wipers.
43. The combination of toe-embracing wipers having wiping edges formed substantially to fit the contour of the toe of a. shoe when they are closed about the too, a last positioning pin mounted in predetermined relation to the edges of said wipers, and a last having in the bottom of its torepart a hole of substantially the same diameter as said pin to receive the pin and so located as to bear the same relation to the contour of the toe that the pin bears to the edges of the wipers when the wipers are closed about the toe.
44. That improvement in methods of making shoes which consists in determining the location of a hole in the bottom of the forepart of a last by reference to the middle points of lines extending across the forepart of the last, determining in the same manner the location of a hole in the forepart of an insole, forming the holes in the last and the insole in the locations thus determined, and positioning the insole on the last by alining said holes with each other.
In testimony whereof I have signed my name to this specification.
ARTHUR F. PYM.
US698099A 1924-03-10 1924-03-10 Manufacture of shoes Expired - Lifetime US1674059A (en)

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US83372A US1692278A (en) 1924-03-10 1926-01-23 Lasting machine

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