US2387351A - Machine for fastening uppers to insoles - Google Patents

Description

mmmm FOR FASTENING UPPERS 1'0 INSOLES Filed Jan. 25, 1944 3 Sheets-Sheet 1' 52 van for Edward Quin?! By Attorney E. UINN 2,387,351

o .23 ,1945. E. QUINN 2,387,351

MACHINE FOR FASTENING UPPERS T0 INSOLES' Filed Jan. 25, 1944 3 Sheets-Sheet 2 O 3, 1 E. QUINN 1 2,387,351

MACHINE FOR FASTENING UPPERS TO INSOLES Filed Jari. 25, 1944 s sheets-sheet} lnvenfor' Edward I U By higfliiorney Patented Oct. 23, 1-945 MACHINE FOR FASTENING UPPERS T INSQLES Edward Quinn, Saugus, Mass., assignor to United Shoe Machinery Corporatiom Flemington, N. J

l a corporation of New Jersey 1 Application January 25, 1944, Serial No. 519,623 9 Claims. (01. 1214) J This invention relates to nachines for fastenngjuppersb to lnsoles', and more particularly to machines for thus operating on the heel-end portions of uppers; The invention is herein i1- lustrated as applied to amachine' of a wellknown type commonly used for lasting the heel ends ofshoes, an object being to adapt such a machinefor convenient-{and successful use for the purpose ofiastening to the heel ends of insoles the previousl molded heel parts of the uppers of so-qalled two-part sandals. It should be understoodjhowever, that the invention is not limitedto machines of that particular type nor limitedin utility to the manufacture of footwear of that particular kind.

A machine ofthe above-mentionedtype is providedwith wipers which in theusual operation of lasting the heel endsof a shoe wipe the margin of the upper inwardlyover an insole on the last, with a heel band for embracing the upper about theuheel end Tof the. last and for clamping it against theend and side faces ofthe last, with devices for inserting .fastenings to fasten the overwipedpmargin ofthe upper to the'insole, .and with a work support or jack which is swung rearwardly from ,an initial forwardly inclined positionto present thework to the operating instrumentalities. After such work-presenting movement of thework support the heel band is closedabout the heel end ofthe upper, the wipers are operated to wipe the margin of-the upper inclampeagainst the. side: faces of the heel end of a'last portionsjof sucha: molded heel part which are embraced by the heel band and are further subjected to clamping. pressure by the band. Ncvelmechanism, also mounted on the work support is movable by the operator to apply the clampsmto the molded heel part while the work support is in1its initial forwardly inclined positicnmAecordingly the clamps serve: to maintainthe heel part in proper relation to the last and the insole during the. workepresenting movement of the work support, which the operator could not conveniently'do with his fingers. In a machine of the typeshown, moreover, they assist in. counteracting a tendency which the heel band has,.by its engagement with the rear end; face of the molded heel partyonly in a locathe driving of the fastenings;

tion comparatively near the bottom of the last, to tip the front ends of the heel part in downward directions. To render the clamps especially efiective for this purpose, they are made resiliently flexible and are so formed and arranged that as they are forced against the heel part they are flexedand thereby tend frictionally to work the side portions of the heel part heightwise of the last toward the edge of the insole. The clamps may thus be flexed to some extent when they are initially applied to the heel. part by the operator, and they are thereafter further flexed by the pressure of the heel band against them when the latter is closed about the heel end of the last'and has its greatest tendency to depress the front ends of the heel part by its pressure on the rear end face thereof. The clamps accordingly serve to prevent any such objectionable displacement of the heel part before it is secured to the insole. {Their use for this purpose is especially advantageous when, as herein illustrated,.the earlier molding of the heel part has been such as to conform it only to the contour :of the end and. side faces of the last, its marginal portion which is to overlie the insole not having as yetlbeen molded to provide a flange parallel to the bottom face of the insole. Itwill be understood that in operating on a heel part prepared in this manner the wipers of the machineherein shown Wipe its marginal portion over the insole after the heel part has been clamped about the heel end of the last as above described.

The above and other features of the invention, including various novel details of construction and combinations of parts, will now be more particularly described with reference to the accompanying drawings and thereafter pointed out in the claims.

In the drawings, 3

Fig. 1 is a view partly in right-hand side elevation and partly in section of a portion of a machine of the previously mentioned type havinglthe present invention applied thereto, the parts of the machine being shown in the positions which they occupy immediately prior to Fig. 2 is a view similar to Fig. 1 of a portion of the structure there shown, but with the parts positioned as they appear prior to the starting of the power operation of the machine and when the work support has received a portion only of its work-presenting movement;

Fig. 3 is a vertical sectional view. illustrating the relation of one of the clamps provided by this invention to the heel band and to the molded heel part of the upper before the heel band is fully closed;

Fig. 4 is a view similar to Fig. 3, but showing the parts as they appear after the closing of the heel band;

Fig. 5 is a View substantially in front elevation of the clamping means as initially positioned on the work support;

Fig. 6 is a view similar to Fig. 5, showing the clamping means in clamping relation to the heel part of the upper prior to the work-presenting movement of the work support;

Fig. 7 is a perspective View of the molded heel part before it is assembled with an insole; and

anism 36 which acts on the work support through a pinion 38 and a rack bar 40 to force the heel end of the upper more firmly against the heel band 2. The bell-crank lever 32 is yieldingly connected by another link 42 to pawl-and-ratchet mechanism 44 through which a pinion 46'on the shaft I0 is operated to urge the rack bar 28 upwardly and thus to force the work more firmly up against the holddown 20. Through mechanism not herein fully shown the slide 39 serves also to close the heel band inwardly against the sides of the heel end of the upper. For a more complete understanding of the construction thus Fig. 8 shows the heel part after it has been 'fastened to the insole on a last by the use of this machine.

The machine to which the invention is herein illustrated as applied is a machine of the type disclosed 'in United States Letters Patent No. 1,- 583,044, granted on May l, 1926, on an application of.C. I-I. Hoyts, but modified in some respects as further disclosed in Letters Patent No. 1,558,737, granted on October 27., 1925, on an application of R. F. McFeelys and Letters Patent No. 1,852,015, granted on April 5, 1932, on an application'of J. C. Jorgensen. Such a machine, which is commonly used for lasting the heel ends of shoes, includes a heel band -2 for embracing and clamping an upper about the heel end of a last, a pair of wipers 4 (only one of which is herein shown) for wiping the margin of the heel end of the upper inwardly over an insole on the last, and upperfastening means comprising a plurality of tack drivers :6 movable downwardly to drive a row of tacks through openings in the wipers to fasten the -.overwiped margin of the upper to the insole, the constru'otion of the upper-fastening means and its relation to thewipers being disclosed particularly in the above-mentioned Letters Patent No. 1,- #852,015. The work is :mounted on "a work support or jack '8 which is mounted at its lower end on a shaft 10 for swinging movement from an initial forwardly inclined work-receiving position to carry the last and its shoe materials rearwardly toward the heel band -2,the work support including apost l2 movable upwardly and downwardly and provided at its upper end with a pin l4 'arranged to enter the usual spindle :hole in the .heel of thelast. 'Fast on the post l'2iis a forwardly extending arm It which serves as a support for a toe rest l8 under the toe end of the last. Before starting the power operation of the machine the operator swings the work support r'earwardly to carry the heel-end face of the upper into. engagement with the heel band and also imparts upward movement to the post 12 to carry the heel end of the insole into engagement with a cam-controlled holddown 2B which determines the position of the work heightwise relatively to thewipers '4. Such upward movement of the :post 12 is effected by means of a tread'le 22 connected :by a link 24 to a lever126 pivotallymountted on the lower end of the work support, the front end of this lever underlying thewlower end of a rack bar 28 through which the post 1:2Iis raised. .After the starting of the power operation of the machine the work support is controlled automatically by mechanism constructed substantially as disclosed in Letters Patent No. 1,558,737. This mechanism includes a cam-operated slide 30 arranged to impart swinging movement in a clock- -w1se direction (Fig. 1.) to a bell-crank lever 32 connected by a link 34 to pawl-and-ratchet mechfar described and of the manner of operation of a machine of the type herein shown the previously mentioned Letters Patent may be consulted.

'The present invention has especially, although not exclusively, in view, the use of a machine of the above-mentioned type for the purpose of fastening to the heel end of an insole mounted .on'a last-orother form the previously molded heel part of the upper of a so-called two-part sandal. Such a molded heel part is shown at a inFig. 7, and may be produced, for example, by a molding machine such as shown in United States Letters Patent No. 2,266,774, granted on December 23, 1941, on an application of A. A. Lawson. It is shaped to conform substantially to the contour of the end and side faces of the heel-end portion of a last of the corresponding style and size, but as illustrated the marginal portion Q thereof which is to overlie the insole is not fully molded to lie fiat on the insole, but is only inclined inwardly and crimped in a preliminary manner along the curved rear portion of the heel part. Itwill be evident that a machine of the type herein shown is adapted to position and hold such a molded heel part in proper relation to the heel end of a last and to the heel end of an in-sole 0n the last by means of its heel band, to wipe the marginalportion of the heel part into parallel relation to the bottom of the insole and to fasten the overwiped margin to the insole. It is, however, inconvenient,

if not impossible, .for the operator, after mounting the molded heel part ontheheel end of the last,

to hold it with his fingers in proper relation to the last and the insole during the work-"presenting movement of the work support and until the heel part is clamped and held by the heel band. For purposes of this invention, therefore, the machine herein shown is provided, on the work support, with a pair of clamps 48 arranged to clamp the forward portions of the heel part against the sides of the heel end of the last. Each of these clamps comprises a resiliently flexible metal plate 50 which is somewhat curved or bowed heightwise of the last with its concave side toward the last and 'is pivotally mounted at its lower end on a pin 52 supported in a plate 54 which is fast on a block 56 secured by clamping screws58 to the forwardly extending work support arm It. Upon loosening these screws the block with the parts thereon may be adjusted in directions lengthwise of the last. The upper end portion of each plate 50 extends in :a :rearward direction relatively to the rest of the plate and has mounted thereon a cover 60 of cloth or other suitable material for engaging the heel part. For swinging the clamps 48 inwardly into clamping relation to the heel part from the initial positions in which they are shown in Fig. 5, the machine is provided with a pair of levers 62 arranged in toggle-like relation to each other and pivotally connected together at their inner ends by a stud64. These levers are fulcrumed between their opposite ends on studs 66 which are threaded in a: plate :61 fast on the b1ock56 and'ext'end xthrough slots in the levers to permit the latter tovshiftlengthwise in theirtoggle like movement.

The outer ends of the levers 62 are pivotally conknectedflto the lower ends of links the upper ends of. which it are pivotally connected to blocks 12 fastened to the plates 50 in locations below the work-engaging portions of the clamps 48. It

as illustrated in Fig. 6the clamps are swung inwardly into clamping relation to the molded heel part. For: thus swinging the leversBZ there is pivotally mounted on a stud I4on the plate 61 a hand lever 16 connected by a link 18 to the stud 64 connecting the inner ends of the levers. For

holdinglthe clamps in their clamping positions there is pivotally mounted on the hand lever 16 a pawl 80 arranged to engage ratchet teeth 82 on the plate 61. i 'I'hepawl is held normally against wthiratchetteeth byaspring 84. To release it "from the ratchet teeth and permit the clamps to be returned to their initial positions there is pivotally mountedon the hand lever 16 a small lever 86 connected to a tail on the pawl.

mayrerrence-to Fig. 1 it will be seen that the heel bandnz, formed as usual in machines of the .type herein shown, engages the rear end face of the molded heel part only in a, location comparatively near the bottom of the last, and by such engagement it has'some tendency to tip the heel part inlthe direction to depress its front end portions, especially when the heel band is closing and thework is being forced more firmly back against thebaridthrough the pawl-and-ratchet mechanism 36. The clamps 48, by clampingthe heel part against the sides of the heel end of the last,

helpto maintain it in proper position against any such tendency of theheel bandto displace it.

Theyare, moreover, so formed that they engage theheel part initially in locations comparatively nearthe edge of the last bottom, as will be evident from Figifi where their lowerworkengaging portionsarestill spaced from the heel part, and as they areapplied by the mechanism shown in Figs.

5 and 6 the curved, resilient plates 50 may be partially straightened, so that the work-engaging portionsof the clamps tend by frictional engagewith africtional action in an upward direction on the sides of the heel part, as will be evident froma comparison 'of Figs. 3 and 4. Compensation is thusaiforded for such tendency as the heel band has to displace the heel part at the time when 'the band applies its greatest pressure to the rear endface thereof. In the useof the machine forthe purpose described the operator mounts on the work support while it is in its initial forwardly inclined positionfa last having an insole c fastened as usual by tacks on itsbottom face. He then mounts on thheel end of the last a molded heel part a formedfor example, asillustrated in Fig. 7, and bydownward movement of the hand lever 16 s wings the clamps 48 inwardly to clamp the forward portions ofthe heel part against the sides of the heel endof the last, as illustrated in Fig; 6.

In this operation the clamps engage the heel part firstin locations comparatively near the. edge of the last bottom, and the curved'resilient plates of the clamps may be sprung somewhatinwardly by the force applied to the handlever, so that the work-engaging portions of the clampstend frictionally to work the front end portions of the heel part in an upward direction. -Thereafter the operator swings the work support rearwardly to carry. the rear end face of the molded heel part into engagement with the heel band 2, and by depression of the treadle 22 imparts upward movement to the post l2 to bring the heel end of the insole into engagement with the holddown 20. During this work-presenting movement of the work support the clamps 48 maintain the molded heel part in proper-relation to the last.

After the workhas thus been presented the operator starts the power operation of the machine. Near the beginning of its operation the work support is acted upon through the pawland-ratchet mechanism 36 to cause the heel band to press firmlyon the heel-end face of l the molded heel part and the work also is forced more firmly up against the holddown 20 through the paWl-and-ratchet mechanism 44. Atsubstantially the same time the heel band is closed about the heel end of the last. -The cam which controls the holddown 20 may, if desired, be so formed as to omit the usual short work-depressing movement of the holddown at this time. As the heel band is closed it presses inwardly against the clamps 43 and by its pressure on the clamps flexes them additionally to bring them into pressing engagement with theheel part in locations still farther from the edge of the last bottom, as will be evident from-Figs. 3 and'4. The clamps thus have a further tendency at this time to work the forward portions of the heel part upwardly. This action of the clamps, supplementing their earlier similar action on the heel part in response to the movement of the hand lever it, compensates effectively for such tendency as the heel band has to depress the front endsof the heel part by its pressure on the rear-end face thereof. After the closingof the heel band the "Wipers 4 are moved inwardly and wipethe marginal portion of the heel part over the insole.

As usual in machines of the type shown the wip-- ersare then retracted and moved inwardly again, the holddown 28 being lifted slightly to cause "the wipers in their second inward movement to mg the heel part to the insole.

wipe the margin of the heel part more firmly down onthe insole. The tack drivers '6 are then operated. to drive the tacks t (Fig. 8) for fasten- After the driving of the tacks the wipers are retracted and the other parts of themachine are returned to their starting positions, the work support being released to permit it to swing forwardly and to permit downward return movement of the post 12. Thereafter the operator disengages the pawl from the ratchet teeth 82, moves the hand lever .such use desirable, the term 'heel part as used in the "claims is :not intended, unless required by the'context, to be limited to a heel part which is formed as a unit "separate from other portions "of the u per.

initial work-receiving position, clamps carried by said :support for clamping the heel part of the upper against the sides 'of the form, said clamps being pivotal-lyimounted for swinging movements about axes extending lengthwise of the form, a pair of levers f-ulcrumedbetween their ends 'onsaid support and pivotally connected together in a toggle-like relation to each other, said levers being connected to the clamps in locations between the axes and the work-engaging portions of the clamps for swinging the latter into their clamping po- 1 .sitions, and means for swinging said levers thus to operate the clamps.

2. In a machine for fastening the heel parts of uppers to'insoles, the combination with upperfastening means, of a support for a form having J thereon an insole and the heel part of an upper to be fastened to the insole, said support being mounted for work-presenting movement from an initial work-receiving position, clamps carried by said supportfor clamping the heel part of the upper against the sides of the form, said clamps being pivotally mounted for swinging movements about axes extending lengthwise of the form, a pair of levers also carried by said support and connected together in a toggle-lik relation to each other, members on which said levers are fulcrum'ed between their opposite ends and relatively .to which they are shiftable lengthwise in their toggle-like movement, and means positively connecting said levers to the clamps for swinging said clamps into their clamping positions by the swinging of the levers about said members.

3. In a machine for fastening the heel parts of uppers to insoles, the combinationwith upperfastening means, of a support for a form having thereon an insole and the heel part of an upper to be fastened to the insole, said support being mounted for work-presenting movement from an initial work-receiving position, resiliently flexible clamps carried by said support for clamping the heel part of the upper against the sides of the form, said clamps being pivotally mounted for swinging movements about axes extending lengthwise of the form, a pair of levers also carried by said support and having a toggle-like relation to each other, said levers being fulorumed to swing about axes between their opposite ends in their toggle-like movement, and links connecting said levers respectively to the different clamps in locations between the axes and. the Work-engaging portions of the clamps for swinging the latter into their clamping positions by the swinging of the levers.

4. In a machine for fastening the heel parts of uppers to insoles, the combination with upperfastening means, of a support for a form having thereon an insole and the heel part of an upper to be fastened to the insole, said support being mounted for work-presenting movement from an initial workereceiving position, clamps carried by "said support for clamping the heel part of the upper against the sides "of the form, said clamps "being pivotally mounted for swinging movements about axes extending lengthwise of the form, a

pair of levers also carried by said support and having a toggle-like relation to eachother, said levers being fulcrumed "to swing about axes between their opposite ends in their toggle-like movement and being connect-ed respectively to the different clamps in locations between the axes and the'work-engaging portions of the clamps "for swingingthe latter into their clamping positions by the swinging of the levers, another lever carried-by said support, and a link-connectingsaid other lever to the pair of levers foroperating the latter.

'5. In a machine for fastening the heel parts of uppers to insoles, the combination with upperfastening means, of a support for :9, form having thereon an insole and the heel part of an upper to be fastened to the insole, a heel band for embracing the heel part of the upper about the form and for clamping it against the end and side faces of the form, and additional means for engaging and clamping against the side faces only of the form portions of said heel part which are thus embraced and clamped by the heel band, said additional means being arranged to have a frictional action on the portions thus engaged tending to Work them height-Wise of the form toward the edge of the insole.

6. In a machine for fastening the heel parts of uppers to insoles, the combination with upperfastening means, of a support for 'a form having thereon an insole and the heel part of an upper to be fastened to the insole, a heel band for embracing the heel part of the upper about the form and for clamping it against the end and side faces of the form, and clamps arranged to engage and to clamp against the side faces only of the form portions of said heel part which are thus embraced and clamped by the heel band, said clamps being flexibly movable with a frictional action on the portions thus engaged tending to work them heightwise of the form toward the edge of the insole as the clamping pressure is applied.

7. In a machine for fastening the heel parts of uppers to insoles, the combination with upperfastening means, of a support for a form having thereon an insole and the heel part of an upper to be fastened to the insole, a heel band for embracing the heel part of the upper about the form and for clamping it against the end and side faces of the form, and clamps arranged to engage and to clamp against the side faces only of the form portions of said heel part which are located between the form and the heel band, said clamps being movable in response to pressure of the heel band thereon with a frictional action on the portions thrus engaged tending to work them heightwise of the form toward the edge of the insole.

8. In a machine for fastening the heel parts of uppers to insoles, the combination with upperfastenin means, of a support for a form having thereon an insole and the heel part of an upper to be fastened to the insole, a, heel band for embracing the heel part. of the upper about the form and for clamping it against the end and side faces of the form, and resiliently flexible clamps for engaging andclamping against the side faces only of the form portions of said heel part which are thus embraced by the heel band,

said clamps being arranged tobe flexed by the pressure of the heel band thereon with a frictional action on the sides of the heel part tending to work them heightwise of the form toward the edge of the insole.

9. In a machine for fastening the heel parts of uppers to insoles, the combination with upperfastening means, of a support; for a form having thereon an insole and the heel part of an upper to be fastened to the insole, a heel band for embracing the heel part of the upper about the form andfor clamping it against the end and side faces of the form, resiliently flexible clamps 10 insole and thereafter to be further similarly flexed by pressure of the heel band thereon.

EDWARD QUINN.

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