US2008072A - Machine for shaping shoe uppers - Google Patents

Description

July 16, 1935. E. A. HOLMGREN 2,008,072

MACHINE FOR SHAPING SHOE UPPERS Filed Aug. 15, 1934 5 Sheets-Sheet 1 A/ VE/V TUE.

E. A. HOLMGREN Filed 13, 1934 MACHINE FOR SHAPING SHOE UPPERS 5 Shets-Sheet 2 MKw July-16, 1935. E. A. HOLMGREN 2,008,072

MACHINE FOR SHAPING SHOE UPPERS Filed Aug. 13, 1934 5 Sheets-Sheet 3 F1 g. ll.

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y 1935. E. A. HOLMGREN MACHINE FOR SHAPING SHOE UPPERS Filed Aug. 13, 1934 5 Sheets-Sheet 4 [.Tfi'fjjj; 313:;

WvE/v TUEL y 6, 1935. E. A. HOLMGREN 2,008,072

MACHINE FOR SHAPING SHOE UPPERS Filed Aug. 13, 9 5 Sheets-Sheet 5 W Z w M/ Ma Z V fl 4 /N M WV n 6 W WM II u 2 4 m m l 7. -l n w 2 F '1 I J w 4 2. my T a p13 a 0 .4 0 W 5 M MM. 1 8 a ,m wwww 2 ww I/ WW .r g, R

Patented July 16, 1935 MACHINE FOR SHA PING SHOE IIPUPERSL Eric A. Holrngren, Lynn, Mass, assignor to United Shoe Machinery Corporation, Paterson,

N. J., a corporation 0 Application August 13,

19 Claims.

.This invention relates to machines for use in the manufacture of shoes for shaping the upper materials, and is herein illustrated in its application to a machine of the same general type as disclosed in United states Letters Patent No. 1,700,970, granted on February 5, 1929, upon an application of W. C. Baxter, comprising means for shaping over a form and over an insole on the form the heel-end portion of upper materials before the upper and insole are mounted on a last. It is to be understood, however, that in various aspects the invention is not limited to a machine organization or" that particular character.

Machines of the type illustrated in the abovementioned Letters Patent have been provided heretofore with means for pulling the upper lengthwise relatively to the form over which its heel end is shaped, so as to stretch the upper preliminarily before it is mounted on the last and also to draw its heel-end portion tightly about the form to assist, in shaping it over the form. Such upper-pulling means is disclosedior example, in Letters Patent No. 1,913,445, granted upon an earlier application of mine on June 13, 1933. The upper-pulling means therein shown was constructed especially for use in operating on uppers the toe-end portions of which had been previously molded substantially to the shape desired for the finished shoes. An object of the present invention is to provide upper-pulling means constructed for use on uppers the toe ends of which have not been previously molded, and the invention is accordingly herein illustrated as embodied means of that character, although it will be recognized that in some aspects it is not thus limited in its applicability.

The invention, in one aspect, provides'novel means for pulling an upper as above described in such manner that the strains on different portions thereof are substantially equalized, so that it properly stretched without undesirable distortion of any portion. For this purpose, the construction shown comprises upper-pulling means whereby the' forepart of the upper is clamped throughout the greater portion of its width at the tip line and for substantial distances both forwardly and rearwardly of the tip line, the upper-engaging faces of the cooperating clamping members'being curved laterally of the upper but extending straight lengthwise of the upper to adapt them for use with substantially the same effect on the uppers of shoes of various styles and sizes. As illustrated also, one'of the upperclamping members, arranged to engage the inner face of the upper, is formed to extend throughout f New Jersey 1934, Serial No. 739,545

the greater portion of the lcngth'of the forepart I of the. upper and to hold the latter outspread at the rear of the portion engaged by the cooperating clamping member so as to assist in insuring uniformity in the pulling of the upper.

Further to insure that each upper will be properly stretched without distortion of any portion thereof, and alsoto insure substantial uniformity in the results obtained in pulling different uppers, the invention provides novel means for positioning the forepart of each upper inproper predetermined relation to the upper-pulling means and the form. In the construction shown this positioning means comprises jig pins arranged to enter jig holes provided in the margin of the upper at the opposite sides of the forepart, preferably in locations substantially at the ends of the tip seam if the upper includes a toe tip, and thus to predetermine the angular relation of the tip line to the upper-pulling means and the form, the jig pins, as illustrated, also determining the position of the iorepart of the upper laterally. Further to assist in positioning the upper properly before it is clamped by the upper-pull- -ing means, thereis provided means for subjecting it to a comparatively light lengthwise pull about the form and also a heightwise pull about one of the clamp members, such means, as illustrated, comprising springs which act thus on the upper through the jig pins.

To facilitate the use of the machine for shaping uppers of different sizes, and to insure that the uppenpulling means will be properly positioned to operate in the best manner on such diiferent uppers, the invention further provides for positioning the upper-pulling means relatively to the form in accordance with the size of the upper'to be operated upon, without special attention on the part of the operator. For shaping the heel ends of uppers of different sizes forms of correspondingly different sizes are preferably utilized, and for the purpose above described the machine is provided with mechanism controlled by each form for positioning the upper-pulling means initially at a distance from the form determined by the size of the form. In the construction shown the above-mentioned jig pins are supported on the upper-pulling means to move therewith, and accordinglyby such mechanism the jig pins also are variably positioned in accordance with the sizes of different uppers. j

The above and other features of the invention, including also novelmeanswhereby the upper is maintained'under tension after it has been pulled and is thereafter released from tension,

and various novel details of construction and combinations of parts will now be more particularly described by reference to the accompanying drawings and pointed out in the claims.

In the drawings, I

Fig. 1 is a view, partly in right-hand side elevation and partly in section, of a portion-of a machine in which the invention is embodied, the parts being shown in'the positions which they occupy in pulling the upper;

Fig. 2 is a view similar to Fig. 1 on a larger scale of portions of the structure there shown, the structure as a whole, howe ver, being illustrated for convenience in a position in which the work support is more nearly vertical than in Fig. 1;

Fig. 3 is a section on the" line IIIIII of Fig. 2;

Fig. 4 shows apcrtion of the structure in front elevation, with parts broken away; 1 r r Fig 5 is a view in left-hand side elevation of the structure shown in Fig. 2;

Fig. 6 is a view similar to Fig. 5, but showing the parts in their initial positions before the work is presented to the machine; and

Fig. '7 is a section on the line VII-VII of Fig. 6.

Since in its general organization, except as hereinafter described, the machine herein shown is of substantially the same construction as disclosed in the previously-mentioned Letters Patent, only such parts as it is necessaryto refer to for an understanding of this invention will be hereinafter mentioned. The machine is provided with a heel-end form It! which is substan-, tially coterminous lengthwise with the heel-end portion of the upper materials, and with means for shaping or molding the heel-end portion of the upper over the form and over an insole on the form, the upper-shaping means comprising a heel band 12 (Fig. 1) for clamping and shaping the upper about the rear end and the sides of the form and wipers H! for wiping the marginal portion of the heel end of the upper inwardly over the insole. There is also provided means (not shown) for driving tacks through holes it in the wipers to fasten the marginal portion of the upper to the insole. The proper relation of the insolo to the form is determined by pins it which project from the form through holes in the insole. The form is detachably supported, as more particularly hereinafter described, on a work support comprising a carrier 2t mounted at 22 on the base of the machine for swinging movement to carry the form with the k from a forwardly in.- clined work-receiving position (Fig. 1) into posiwhich it is unnecessary to describe for an understanding of the present invention. The upper and the insole are mounted upon the form IF" when the form is in its work-receiving position, and

to assist in positioning the heel end of the upper materials in proper. relation to the form there is provided a jigging device 2 having means for engaging the marginal portion of the upper at the extreme heel end injig holes provided in the upper, and also means for pressing down the rear end of the counter, as disclosed in Letters Patent No. 1,726,833, granted uponanearlier application of mine on September 3, 1929. This jigging device is in control of the upper as the latter is subjected to a lengthwise pull in the manner hereinafter described, but is withdrawn from its operative position before the work support receives its rearward swinging movement. For conshown in the above-mentioned Letters Patent No.

1,913,445 and in other respects involves novel features for purposes of the present invention. Such pulling of the upper is effected by engagement with its forepart, the construction herein shown being such as to operate thus by engagement with uppers the toe-end portions of which have not been previously molded. For the purpose in view the forepart of the upper is clamped between members 25 and 28 which act respectively on the inner and outer faces of the upper materials, both of these members being supported on an angularly shaped carrier 30 having a rearwardly extending lower portion supported by a. rod 52 and a shaft 34 upon the upper ends of substantially parallel links 36 and 38. These links at their lower ends are supported for swinging movements on rods 40 and 42 respectively which are mounted on a bracket 44 supported for adjustment about an upright rod 46, this rod being mounted in a bracket 48 secured on the front of the work support member 20. Adjustment of the bracket 44 about the rod 46 serves to vary the positions of the upper-pulling clamp members 26 and 28 laterally of the form [0 for operating respectively upon right and left uppers. The bracketed is held in proper adjusted position by screws 50, one at each. side thereof (Fig. 4) which engage lugs 52 on the bracket 48.

The clamp member 26 comprises a plate curved laterally of the upper and formed to engage the upper materials throughout the greater portion of the width of the forepart, the plate being straight lengthwise of the upper in view of its intended use on uppers of various styles and sizes and being of such length as to extend throughout the greater portion, at least, of the length of the forepart of the upper so asto maintain the top of the forepart outspread and thus assist in avoiding undue localization of the strain on the upper as it is pulled. This plate is secured to a block 54 fastened to a rearwardly extending arm of the carrier 30. The clamp member 28 is movable upwardly and downwardly into and out of clamping relation to the plate 26 and has a. leather facing 56 for engaging the upper, this clamp member being curved laterally of the upper similarly to itheplate 26. For the purpose of such upward and downward movement the clamp member 28 is supported on a slide 58 movable along guideways on the carrier 30, and between the clamp member and the slide there are interposed springs 60 which are yieldable more or less in the clamping of the upper. The slide 58 is operated by turning movement of the shaft 34 above referred to as affording a connection between the carrier 30 and the link 38, the shaft having fast thereon a crank arm or 1ever'62 for thus operating it. The shaft 34 has fast thereon a sleeve 63 (Fig. 4) which carries a crank pin54 connected by curved'links 66 to the slide 58. Movements of the crank arm 62 in. opposite directions are limited by steps 68 and 10 on the carrier 30.

(Fig. When the crank arm 62 is in the position determinedby the stop I0, the crank pin vIi4 is on dead center, so that the parts remain in clamping positions when the operator releases the crank arm. By reference to Figs. 2 and 5 it will be seen that the clamp member 28, through its leather facing 55, engages theupper at the tip seam and also for a'considerable distance forwardly of the tip seam as well as more or less rearwardly thereof to holdthe upper in the vicinity of the tip seam against distortion in the upperpulling operation. The member 26, moreover, extends rearwardly a considerable distance beyond thememb er 28 to maintain the forepart of the upper outspread laterally at the rear of the clamped portion, so as to assist in avoiding distortion of the upper as it is pulled.

In the construction herein shown the carrier. 30 with its upper-clamping means is held initially in an upper-receiving position comparatively near the form Ii! (Fig. .6) by a spring I2 connected at one end to the bracket 44 and at the other end to the link 38, this positionof the carrier being determined in accordance with the size of the upper by means hereinafter described. The carrier is operated to pull the upper by a pawl-and-ratchet device comprising a plate I4 (Fig. 6) secured to the link 38 between spaced portions of the link and having ratchet teeth 'lii thereon, and pawls I8 and 80 arranged to engage theteeth l6 and pivoted on a pin 82 on a pawl carrier 84 which is mounted to swing on the rod 42. The pawls I8 and 8d are arranged in staggered relation to each other for greater precision. For operating the I pawl carrier 84 there is provided a crank arm 86 (Figs. 221ml 4) fast on a rock shaft 88 mounted in the bracket 44, this rock shaft being provided with a crank pin 9i! connected by a link 92 to the pawl carrier. The pawls i8 and 8!! are controlled respectively by springs 94 and 96 which. tend to swing them toward the ratchet teeth, the spring 9 1 being connected to a pin 98 mounted in a lug on the pawl I8 and extending past the pawl 80. Initially both pawls are held out of engagement with the ratchet teeth (Fig. 6) by a stop I00 adjustably mounted in a bracket I 82 depending from the bracket 44, this stop being arranged to engage a pin I04 on the pawl 80. The stop I59 thus acts directly on the pawl 80, and this pawl by engagement with the pin 98 on the pawl I8 holds the latter also retracted from engagement with the ratchet teeth. It will be understood that when the operator swings the crank arm 38 forwardly toward him the pin I04 leaves the stop I GI] and the pawls then engage the ratchet teeth and are operative in further movement of the crank arm to swing the link 38 and thereby impart forward pulling movement to the carrier 36. The crank arm 86 carries a spring plunger I I16 arrangedto be engaged initially by a lug )8 (Fig. 2) on the bracket 44 to hold the'crank arm in its initial position and yieldable to permit theforward movement of the crank arm, the latter being shown in' Fig. 2 as having received some forward movement. A stop II!) on the bracket 44 serves to prevent forward movement of the crank arm 86 beyond a predetermined position.

The amount of upper-pulling movement imparted to the carrier 30 in pulling each upper by use of the construction herein shown is under control of the operator, and it is contemplated that such upper-pulling movement of the carrier may be effected in successive steps by repeated movements of the crank arm 86. To hold the carrier 3i] against retractive movement from the position which it assumes in response to any. forward movement of the crank arm 86 there are provided holding pawls I I2 and H4 (Fig. 6) arranged to engage the teeth I6, these pawls being arranged in staggered relation for greater precision. The pawl H2 is fast on a rock shaft I I6 mounted in, the bracketed, and the pawl H4 is loose on this; rock shaft. Secured to the rock shaft Ht is a bell-crank lever H8 controlled by a spring I25 which tends to swing the pawl H2 toward the ratchet teeth. This pawl carries aleaf spring I22 which bears on a pin I28 carried by the pawl I4 and accordingly serves to swing the pawl H4 intoengagement with the ratchet teeth as the pawl H2 is moved into engagement with the teeth by the spring I For swinging the pawls out of en gagement with the ratchet teeth to permit the return of the carrier 35 to its initial position there is provided a link I26 pivoted at 128 to the hub of the crank arm 52 and provided at its lower end with a slot 39 in which lies a pin I32 carried by one arm of the bell-crank lever II8. When the parts are in the positions illustrated in. Fig. 6 the pin 32 is at the lower end of the slot I30 and the link I26 holds the bell-crank lever I I8 in position to maintain the pawl I I2 out of engagement with the ratchet teeth, the pawl l 54 being at the same time held out of engagement with the teeth by contact of the pawl I I2 with the pin I24 on the pawl H4. When the crank arm 52 is swung into position to eifect the clamping of the upper, the link I26 is carried downwardly and releases the bell-crank leveriia was to permit the pawls H2 and II 4 to be swlmg into engagement with the ratchet teeth, as illustrated in Fig. 5. The pawls are thus rendered effective to maintain the pull on the upper when the carrier Sll is operatedrby the crank arm 86. When the crank arm 52 is swung into position to unclamp the upper after the completion of the cycle of operations of the machine, the pawls II2 and H4 are returned to their idle positions by the link I26 to permit the carrier 30 to be returned to its starting position by the action of the spring I2 thereon.

To assist in insuring that each upper will be properly clamped and will be properly stretched without distortion of any part thereof, having regard to the correct lines of the finished shoe; the machine is further provided with means for positioning the foreparts of all uppers of the same size and style uniformly in the same correct rela-.

tion to the heel-end formifl and to the clamp members 25 and 28 before the uppers are clamped by these members. This means comprises jig pins I34jand I 36 (Fig. 3) arranged to enter jig holes provided in the opposite side margins of the forepart of the upper, preferably in locations substantially at the ends of the tip seam if the upper is provided with a toe tip, these jig holes being adapted for use later in positioning the toe end of the upper in proper relation to means for shaping that portion of the upper. .The jig pins I34 and I35 are supported respectively on arms I38 and Mil (Figs; 2, 4i and 5) which are mounted on a rod M2 extending transversely of the carrier 3!] at the upper end of the latter, the rodbeing supported at its opposite ends on arms I44 and I46 pivotally mounted at M8 and I5!) respectively on the carrier 38. The arms I38 and I Mlare each separately adjustable about the rod I42, and the arms are secured in adjusted relation to members I52 and. I54 fast on the rod I42 by V clamp screws I55 and I58 threaded respectively in the diiferent arms and exteding through slots in the members I52 and I54. The rod I42 is manna ed to turn in the arms I44 and I46; and mounted in these arms are spring plungers Itil and I62 which by engagement with the members I52 and I54 tend to swing the arms I38 and I46 and the jig pins thereon'in an upward direction. Such upward movement of the arms is limited by a bar I64 (Figs. 2 and 3) associated with the jig pin I35, as more particularly hereinafter described;

- Fast-on the arm I44 is adepending arm I56 '(Figs. 4, 5 and 6) to the lower end of which is con nected a spring I68, this spring tending to swing the arms I44 and Hit and the rod I42, together with the arms I38 and I49 and the jig pins thereon, in a iorward direction away from the form IO. Initially the arm I65 is held b'y-the spring I68 against a stop Ilil (Fig. 6) on the carrier 30. The jig pins I34 and I35are thus maintained by the spring I63 in positions arlittle farther from the form If! than the jig holes in the upper after the I upper has been mounted on the form, and they are also maintained by the spring plungers I56 and I52 in positions higher than required to enter the jig holes. Accordingly the operator swings the arms I 44 and I45 rearwardly and swirl gs the arms I33 and M5 downwardly before mounting the upper on the jig pins, and when he releases the different arms the jig pins spring both forwardly and upwardly, thereby imparting a light forward pull to the upper about the form It and also an upward pull to draw it tight over the clamping plate 26 while locating the tip scam in correct relation to the'form and the clamping means.

The jig pin I34 is preliminarily adjustable in directions lengthwise of the upper along a slot I12 (Fig. 6) in the arm I38, and for this purpose is provided with a diametrically enlarged portion I14 (Fig. 3) having slots cut in its opposite sides to-receive' the portions of the arm I38 located at the opposite sides of the slot I12. Threaded on a stem I'IIi extending from the enlarged portion I14 is a nut I73 which by engagement with the arm I38 clamps the jig pin I34 in adjusted posi tion. The opposite jig pin I35 is similarly provided with an enlarged portion I83 slotted to receive spaced portions of the arm 54% at opposite sides of a slot It'll (Fig. 2) in the arm and having a stem I 82 projecting therefrom. Mounted on this stem is a bushing I34 whichbears on the outer side of the arm Md and a reduced portion iilIi extending loosely through a slot I88 in the previously mentioned bar I64. Threaded on the stem I82 is a nut see which presses the bushing I8 1 against the arm I45 and therefore clamps the jig pin in adjusted relation to the arm 3% while permitting upward and downward swinging movements of the arm relatively to the 'bar IE4. It will be understood that the limiting at its lower end portion to a bracket I92 (Figs.- 2

and 4) having rearwardly extending upper and lower arms I94 and Hit, the arm I96 being supported for swinging movement on a rod I98 which is mounted in the bracket 44. Thispermits'the bar IIi I to be swung forwardly through its abovedescribed connections to the arm I 40 when the sonata 'carriertllismoved forwardlyto pull the upper.

Mounted for swinging movements on a stud 200 on the bracket 44 is a member 2H2 to which is fastened an upwardly extending arm 204 having a laterally projecting pointer 206 at its upper end. Carried by the arm I94 is a pin 208 which extends into a slot 2H! formed in the member 20 2, so that as the bar I64 is swung forwardly as above described the pointer 2IlB' is swung by the bar in the same' direction. A light spring 2I2 connected to the lower end of the member 202 insures that the pm 208 will always engage the arm I94 at one side of the slot 2 I for the sake of greater accuracy in the control of the pointer 206; This pointer cooperates with a scale' on spine 2M which is fastened orithe segmentally shaped upper end of a lever 2I6 supported on the above-mentioned stud 280 and adjustable about the stud. In the lower end 'of the lever 25 I is a segmental slot 2I8 through which extends the previously mentioned rod I93, and threaded on'the end of this rod is a thumb nut 220 which serves to clamp the lower end of the lever 2 i5 in adjusted position against a shoulder on the rod I98. The arm ZIB is thus held stationary during the pulling of the upper andthe pointer 206 moves relatively to it. The scale on the plate 2I4 may be graduated to indicate difierent shoe sizes. It is contemplated that in the use of this mechanism the operator will pull one upper an amount which in his judgment is sufficient for the purpose in view and will then adjust the lever 2 I6 until the pointer 205 is over that mark on the scale corresponding to the size of that particular upper. Thereafter the lever 2H5 will be left in the same position in pulling other uppers, each upper being pulled by forward movement of the carrier 30 until the pointer 206 is over that mark on the scale which corresponds to the size of the upper. This provides for.

substantial uniformity in the stretching of the be located in substantially the same relation to the clamp members 25 and 28, and in order that the jig pins I34 and I36 will be so located that they may be readily connected with the different sized uppers and will subject each upper to alight forward pull in the manner previously described prior to the clamping of the upper, the carrier 30 should be located at different distances from the form I0 corresponding to differences in sizes of the uppers. Preferably forms II! of different sizes will be used in operating on the different sized uppers,

and as herein illustrated mechanism controlled by the different forms is provided for thus variably positioning the carrier 30. Each form In is detachably mounted on a pin 222 (Fig. 6) at theupper end of a bar 224 which mounted in the work carrier 20, a. bushing 226 being provided between the pin and the form. A portion 228 of the bar 224 is provided with straight upwardly extending faces arranged to engage corresponding" faces on the form and thus to prevent the form from turning relatively to thebar. A lower face 230 at the rear end of the formis supportedon the upper end face of the work carrier Each form has in its forward end a slot 232 to receive the upper endof one arm- 234 of a bell-crank lever 236 which is pivoted at 238 on the bracket 44, this lever having a forwardly extending arm 240 in which is adjustably mounted a screw 242 arranged to bear at its lower end on a bracket 244 fastened to the link 38. The arm 234 of the bellcrank lever 236 is arranged to bear on each form III at the bottom of the slot 232 in the form, so that the form determines the limit of upward swinging movement of the arm 240 of the lever. The swinging of the link 38 under the influence of the spring I2 is accompanied by upward movement of the forward end of the bracket 244, and it will be evident that the link'can be swung rearwardly onlyas far as permitted by contact of the bracket with the screw 242 when the arm 240 is at the limit of its upward movement. The different sized forms III are so constructed that through this mechanism the initial position of the carrier 30 will be varied in accordance with the size of the form, and accordingly the upper-pulling means willbe variably positionechunder control of the different forms, as required for operating on the uppers of different sizes. 7

Each form III is locked in operative position on the bar 24 by a yoke-shaped member 246 (Figs. 6 and '7) slidingly mounted in substantially horizontal guideways formed in opposite sides of the portion 228 of the bar, the rear end of the member 246 extending into a slot 248 in the form to lock the latter. The member 245 is held yield ingly in looking position by a "spring-pressed. plunger 25%? mounted in the portion 228 of the bar 224. To'unlock the form when it is desired to remove it, use is conveniently made of the previously mentioned bell-crank lever 236. For this purpose the arm 234 of the bell-crank lever carries a pin 252 projecting from the opposite sides of the arm and arranged to engage fingers 254 which project downwardly from a member 256 fastened to the yoke member 246. By depressing the arm 24!! of the bell-crank lever 236 the pin 252 is made to engage the fingers 254 and to slide the yoke member 245 forwardly far enough to unlock the form. It will be evident that this can be done only when thecarrier 30 of the upperpulling means is in such a forward position asto provide suilicient space between the bracket 244 and the screw 242 to permit the necessary downward movement of the arm 249. The carrier can be readily moved to this position by the operator when there is no work in the machine. By reference to Figs. 6 and 7 it will be evident that the member 256 by engagement with the portion 228 of the bar 224 serves to limit rearward movement of the yoke member 245 an er theinfluence of the spring plunger25ll. 4 I

In the use of the machine, the operator mounts the upper materials about the heel-end form III, a form corresponding to the size of the uppers-to be operated upon having already been inserted in the machine, and'positions the forepart of the upper between the open clamp members 26 and 28. He then swings the arms I44 and I45 rearwardly and the arms I38 and MI! downwardly until the jig pins I34 and I36.are in positions to have the upper mounted thereon, and after mounting the upper on the pins releases the several arms, whereupon the spring I68 acts through the pins to subject the upper to-a light lengthwise pull so as to draw itsheel end closely about the form I I! and the spring plungers I60 and I62 act through the pins to draw the forepartof the upper tightly. about the clamp member 25. By means of the jig pins the tip'seam of the upper isthus located in predetermined angular relation to the clamp members and in predetermined'relation also to the form I0, and the forepart of the'upper, moreover, is positioned'laterally in predetermined relation to the clamp members. With the upper thus held under. light tension by the jig pins the operator mounts an insole on the form in the'position determined by the pins I8. The'jigging device 24 maythen be utilized to position the'count'er and the heel end of the upper more accurately, in the manner disclosed in the previously mentioned Letters Patent No. 1,726,833. V I

By swinging the crank arm 62 the operator next moves the lower clamp member 28 into clamping relation to the upper, the pawls I I2 and I I4 being released by the movement of the crank arm so that they are swung intooperative relation to the ratchet teeth It. By movements of the crank arm 86 the operator then operates the upper-clamping means, through the pawl-and: ratchet mechanism controlled by this arm, to subject the upper toaforward pull, one or the other of the pawls I I2, I I4 holding the clamping means in any position to which it is thus moved. In the upper-pulling. operation the pointer 2B5 moves along the scale plate 2 I4, and the operator terminates the pulling movement when I the pointer arrives at the point on the scale 'corre sponding to the size of upper. While the upper is thereafter held under tension by the upper-pulling means the operator starts the power operation of the machine, whereupon the shoe support and the upper-pulling means are swung rearwardly and the machineoperates to shape the heel-end portion of the upper materialsover the form and to 'fastenthem to the insole in the manner disclosed in the previously mentioned Letters Patent. After the shoe support has been swung forwardly again at the completion of the uppershaping'operation, the operator swings the crank arm 62 reversely to unclamp the upper, thereby also withdrawing the holding pawls I I2, I I4 from operative position so that the spring I2. is permitted to move the upper-pulling means rearwardly to the position determined in accordancewith the size of the form It! by the bell-crank lever 236. Thereafter the operator disconnects the upper from the jig pins and removes the shoe materials from the machine. It is contemplated that they will preferablynext be presentedvto a machine such as disclosed in Letters Patent'No. 1,968,146 granted upon an application of mine on July 31,1934, for shaping the forepart *of the upper, i

'Having de'scribed the invention, what I claim as new'and de ire to secure by Letters Patent of the United States is:

-1. Ina machine for shaping shoe uppers, the combination with means forshaping over a form correspondingto a portion only of a last the heel-end portion of an upper the toe end .of which is in unmolded condition, of means for subjecting the upper to a' lengthwise pull relatively tov said form, said upper-pulling means comprising cooperating upper-clamping members having upper-engaging faces curved laterally of the. upper for engagingit over the greater portion of its width and arranged to extend straight lengthwise of the upper substantial distances both forwardly and rearwardly of the tip line.

2.' In a machine for shaping shoe uppers, the combination with means for shaping over a form corresponding to a portion only of a last the heel end portion of an upper the toe end of which isin unmolded condition, of means for subjecting the upper to a lengthwise pull relatively to said form, saidupper-pulling means comprising cooperating uppereclamping members having up:

per-engaging faces formed to extend straight lengthwise of the upper and curved laterally of the upper for engaging it over the greater por tion'ofv its width, the upper-engagingface of one of said members being arranged to extend per-pulling meansrcomprising cooperating uppere clamping members arranged to engage the fore: part of the upper respectively on its inner and outer faces, the member engaging the inner face of the upper having its upper-engaging face formed to extend throughout the greater portion of the width of the forepart and also to extend straight lengthwise of the upper rearwardly of the other clamping member for holding the top of the forepart of the upper outspread as the pull is applied;

4. In a machine for shaping shoe uppers, the combination with means for shaping the heele end portion of an upper over a form, of cooperating clamp members arranged to clamp, the forepart of the upper between them and movable relatively to said form to pull the upperlengthe wise, a retaining device for holding said mem:

V bers against retractive movement, a controlling member movable by the operator to cause said clamp. members to clamp an upper and thereafter to release the upper, and means for rendering said retaining device operative by the movement of said controlling member in a direction tov cause the clamping of the upper and for rendering it inoperative by the movement of said member in a direction to cause the release of the upper.

5. In a machine for shaping shoe uppers, the combination with means for shaping the heele end portion of an upper over a form, of cooperate ing clamp members arranged to, clamp the fore part of the upper between them, means for mov-' ing said members in a direction lengthwise of the upper to pull the upper relatively to the form, a pawl-and-ratchet device for holding said mem, bers against retractive movement and for thus maintaining the upper under tension, a crank arm for moving one of said clamp members rela tively to the other into and out of upper-clamping position, and connections between said crank arm and the paWl-and-ratchet device for render: ing said device operative when the upper is clamped by said members and for. rendering it inoperative when'the upper is released by said members.

, 6. In a machine, for shapingv shoe uppers, the combination with means for shaping the heel:

end portion of an upper over a form,v of cooperate ing clamp members arranged to, clamp the top of the forepart of the upper between them in the vicinity of the tip seamand'movable rela-' seam to, said clamp members before the upper is clamped.

7. In a machine for shaping shoe uppers, the combination with means for shaping the heelend portion of an upper over a form, OfiCOOIJQI ating clamp members arranged to clamp the top. of the forepart of the upper between them in the vicinity of the tip seam and movablerelatively to said form to pull the upper lengthwise, and members arranged to'engage the marginal por: tion of the upper in jig holes located substane tially at the ends of the tip seam for predetere, mining the angular relation of thentip seam to said clamp. members before the upper is clamped;

8. In a machine for shaping shoe uppers, the combinationwith means for shaping the heel-end portion of an upper over a form, of cooperating clamp members arranged to 'clampthe top of the forepart of the upper between them in the vicinity of the tip seam and movable relatively to said form to pull the upperlengthwise, and jig pins arranged to engage the marginal portion of the upper inrjig holes provided therein at the opposite sides of' the forepart and thereby to predetermine the angular relation of the tip seam to said clamp members and also the position of the forepart of the upper laterally with respect to said members.

9.. In a mac ne or shap s upp r h combination with means for'shaping the heel-' end portion of an upper over a form, of cooperat ing clamp; members arranged to clamp the forepart of the upper between them and movable relatively to said form. to pull the upper lengthwise, and means movable relatively to said clamp members t subi t t e upper t a com a a i ly light lengthwise pull about the form before the upper is clamped by saidrmembers.

10. In a machine for shaping shoe uppers, the combination with means for shaping the heel- .end portion of an upper over a form, ofcooperete ing clamp members arranged to Glamp the top Q h rampa t f e upper betwe n th m n the vicinity of the tip seam andmovable relatively to said form to pull the upper lengthwise,

and spring-controlled members ir-ranged to en eas the upp r n 31s ho e p v th rein ub stantially atthe ends of the tip seam for predetermining the angular relation of the tip seam t a p. em ers and e b c n t upper to a comparatively light lengthwise pull is clamped by said portion of the upper in jig holes provided there- 7 in at thefoppqsite'sides oi the fore'part and there: by to predetermine the relation of the forepart of the upper to said f orm and clamp members, and spring means for subjecting the upper through said jig pins'to acomparatively light pull to. position in proper relation to said form and cl m embe s. b we he up er i da by sa m e a a j 12. In a machine for shaping shoe uppers, the combination with mean s for shaping the heelend portion of an upper over a term, of cooperating clamp member's arranged to engage the forepart of the upper respectively on its inner and outer faces and movable relatively to said form to pull the upper lengthwise, and means for pulling the forepart of the upper heightvvise abou th clam memb r en a in its inner We before the 1 1222 is la ped 13. In a machine for shaping shoe uppers, the

end portion of an upper over a form, of cooperating clamp members arranged to clamp the top of the forepart or" the upper between them in the vicinity of the tip seam and movable relatively to said form to pull the upper lengthwise, jig pins arranged to engage the upper in jig holes provided ther in in locations substantially at the ends of the tip seam for predetermining the angular relation of the tip seam to said clamp members, and spring means for moving said jig pins in the direction toqpull the forepart of the upper heightwise about one of said clamp members before the upper is clamped.

14. In a machine for shaping shoe uppers, the combination with means for shaping the heelend portion of an upper over a form, of cooperating clamp members arranged to clamp the top of the forepart of the upper between them and movable relatively to said form to pull the upper lengthwise, and means constructed andarranged to act by engagement with the marginal portion of the upper at the opposite sides of the forepart to subject the upper to a comparatively light pull lengthwise about the form andheightwise about one of said clamp members before the upper is clamped by said members.

15. In a machine for shaping shoe uppers, the combination with means for shaping the heelend portion of an upper over a. form, of cooperating clamp members arranged to clamp the top of the forepart of the upper between them in the vicinity of the tip seam and movable relatively to said form to pull the upper lengthwise, jig pins arranged to engage the upper in jig holes provided therein substantially at the ends of the tip seam to predetermine the relation of the forepart of the upper to said clamp members, and spring means arranged to move said jig pins in directions both lengthwise and heightwise of the upper to pull it lightly about the form and also to pull its forepart lightly about one of said clamp members before the upper is clamped by said members.

16. In a machine for shaping shoe uppers, the combination with means for shaping the heelend portion of an upper over a form, of cooperating clamp members arranged to clamp the forepart of the upper between them and movable relatively to said form to pull the upper 1engthwise, and jig pins arranged to engage the marginal portion of the upper in jig holes provided therein at the opposite sides of the forepart and thereby to predetermine the relation of the forepart of the upper to said form and clamp members, said jig pins being movable with said clamp members in the pulling of the upper.

1'7. In a machine for shaping shoe uppers, the combination with means for shaping the heel ends of uppers of different sizes over heel-end forms of correspondingly diiferent sizes, of upper-pulling means arranged to engage the fore part of each upper and movable to pull the upper lengthwise relatively to the form over which its heel end is shaped, and means arranged to be controlled by each heel-end form for positioning said upper-pulling means initially at a distance from the form determined by the size of the form.

18. In a machine for shaping. shoe uppers, the combination with means for shaping the heel ends of uppers of different sizes over heel-end forms of correspondingly different sizes, of upper-pulling means arranged to engage the forepart of each upper and movable to pull the upper lengthwise relatively to the form over which its heel end is shaped, a spring tending to move said upper-pulling means toward the form in a direction lengthwise of the upper, and a device arranged to be controlled by each heel-end form and to determine the limit of movement of the upper-pulling means toward the form in accordance with the size of the form.

19. In a machine for shaping shoe uppers, the combination with means for shaping the heel ends of uppers of different sizes over heel-end forms of correspondingly different sizes, of upper-pulling means'arranged to clamp the forepart of each upper and movable to pull the up per lengthwise relatively to the form over which its heel end is shaped, members mounted for movement with said upper-pulling means and arranged to engage the upper in jig holes provided therein to position the upper initially in proper relation to the upper-pulling means, and a device movable to different positions in ac-- cordance with differences in the sizes: of differ ent forms and arranged to act as a stop to limit movement of said upper-pulling means and members toward the form and thus to determine their initial positions in accordance with the size ofthe form.

ERIC A. HOLMGREN.

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