US2051533A - Apparatus for forming shoes of the prewelted type - Google Patents

Description

Allg. 18, H A SCHOLZ APPARATUS FOR FORMING SHOES OF THE PRE-WELTED TYPE n Aug. 18, 1936. A. scHoLz 2,051,533

APPARATUS FOR FORMING SHOES OF THE PRE-WELTED TYPE 5 Sheets-Sheet 2 Aug. 18, 1936. H. A. sCHLz 2,051,533

APPARATUS FOR FORMINQ SHOES OF THE PRE-WELTED TYPE Filed Aug. 51, 1935 5 sheets-sheet 3 Aug. 1s, 1936, H. A. SCHOLZ 2,051,533

APPARATUS FOR FORMING SHOES OF THE PRE-WELTED TYPE Filed Aug.` 5l, 1955 5 Sheets-Sheet 4 Aug- 18, 1936- I H. A. s cHoLz' '2,051,533

APPARATUS FOR FORMING SI-TOES OF THE PRE-WELTED TYPE Filed Aug. 51, 1935 5 sheets-sheet 5 If a7 w hvrvs E50/02 z Patented Aug. 18, 1936 PATENT OFFICE APPARATUS FOR FORMING SHOES OF THE PREWELTED TYPE Harvey A. Scholz, Milwaukee, Wis.

Application August 31,

Claims.

lThis invention appertains to the manufacture of shoes, and more particularly to a novel apparatus for forming shoes of the pre-Welted type. 5. Pre-welted shoes are generally thought ofv as being inexpensive shoes. However, considerable time and effort is expended in the making of these shoes, and usually a number of different operations and machines are employed to pull the upper over the combined insole and middle sole, to properly last the upper in place and to hold the upper while the outsole is` being secured to the middle sole portion and to the welt.

In certain instances it has been proposed to use an adhesive to hold the upper in place over the edge of the combined insole and middle sole; in other instances nails, wires, andi clamps have been employed. All of these operations are slow, tedious, and expensive, and none (to my knowledge) properly shapes the upper to the last and to the` combined insole and middle sole to form a well-shaped shoe ofgood appearance.

It is, therefore, one of the primary objects of myl invention to provide a single machine for effectively drawing in the upper over the last andA the combined insole and middle sole, and for shaping the upper thereto, and for firmly holding the upper and welt in proper position during the securing of the outersole in place, whereby a well-formedv pre-welted shoecan be' quickly and economically made.

Another object of myinvention is the provision of means for supporting the welt laterally of the last, when the upper has been shaped w and drawn into place, so that the outsole (as the same is brought into place) can be firmly united to the welt at all points aswell as tov the iddle sole portion of the combined] insole vand middle sole. 40j Another prime object o f my invention is to provide laterally movable drawingfin, plates shaped to conform to the configuration. orfA the shoe being made for effectively.- engagingV all parts. cf the shoe between the.; upper and welt for. bringing` the upper and welt over theA combined insole and.` Iniddlesolev nailed to the last, and for holding the upper in such position during the securing of the outsole to the shoe.

Anothersalient` object of myA invention isY the Provision of` laterally movable sidel drawing-in plates shaped to conform to thel sides of the shoev and laterally movable drawing-in toe and heel. tuckplates shaped to conform. tothe shoe, 55; witnmeansrfor.- detachably. holding the plates in 1935, SerialV No. 38,721

position, whereby the same can be replaced when worn, or for different shapedA shoes, etc.

A further object of my invention is the pro- Vision of novel and simple means for operating all of the drawing-in plates from a single oper- 5.

atingmember, whereby saidi member can be conveniently actuated from a foot treadle, so that the hands of thev operator will be left free) to manipulate the shoe, outsole, etc.

A further important object of my invention is 10 the provision of means for initially operating the toe and heel drawing-inplates slightly in advance of the side plates, so-that the toe and heel parts of the upper will be partly drawn into position prior to the bringing in ofthe side porl5 tions of the upper.

A further object of my invention is the' pro- 1 vision of means for moving the` toe plates toward one another as the said toe plates move in over the last, whereby the toe of the shoe will be properly formed without danger of tearing or cracking the leather.

A further object of my invention: i's the provision of means for shifting the parts ofthe toel and heel plates toward and away from. one another, whereby theI said;l parts can be adjustedg to the width of the particular shoe being made. y

A further object of my invention is theA provision of means for mountingv the side, toe, and 30, heel plates on slide members, whereby said side, toe, and. heel plates can be initially adjusted on the slide plates to conform to-y the size of the shoe beingv manufactured.

A further object of myv invention is the provision of means for rockably mounting thev side drawing-inplates on their slide plates, whereby said side plates will` automatically conform to the shape of the insole, so that a well-formed shoe is insured without danger of injuring the leather in anyway. Y Y

A` still further object off my invention is. to provide an improvedV machine of the above character which will be durableY and eicient in use, one that will be simple andV easy to*I manufacture, and: one whichcan be placed upon' the mar-4 ket at a: comparatively small cost.

With these and otherrobjects-inview, the inventionr consists in the novel construction, arrangement', andi formation. of parts, as will be hereinafter more specifically described, claimed, and illustrated in the accompanying drawings, in whichv drawings:

Figure 1'1 is a front elevationof my improved machine.

Figure V2 is anV enlarged, central vertical sec- Ytion through one unit of the machine, taken substantially on the line 2-2 of Figure 1, looking in the direction of the arrows.

Figure 3 is a top plan View of one Vunit of the improved machine, the drawing-in plates being shown in their openposition, with the last and shoe removed. Y

Figure 4 is a horizontal section taken substantially on the line'4-4 of Figure 5, illustrating the novel' means employed for actuating all of the drawing-in plates. j

Figure 5 is a fragmentary side elevation of the improved machine withthe lasty and upper shown in dotted lines. f

Figure 6 is an enlarged, detail plan View showing the combined insole and middle sole nailed to the last, with the upper disposed on the last and prior to being drawn-in over thelast and `combined insole and middle sole.

Figure 7 is an enlarged, fragmentary, transverse sectional View` through the last, the upper andthe combined insole and middle sole, with the side plates, in position forl drawing in the upper: overv the last ,and combined insole and middle sole, thejsection being taken through the lastrsubstantially von the line 1-1 of Figure 6. Figureis a view similar to Figure 7, with the upper drawn into its proper position, and the outsole cemented Vin place, the View being taken substantially on the line 8-8 of Figure 9, looking in the'direction of the arrows. Y

' Figure 9 is a View similar to FigureV 3, showing `the position of the plates after the upper has been brought intoproper, position over the last and the combined insole and middle sole.

Figure 10 is a central transverse section taken through one unit substantially on the line II!- |0 ofFigure 9. v p

Figure 11 is a transverse section through one unit of the machine, taken substantially on the i lineV AI I-II of FigureA 9 looking in the direction of the arrows.

Figure 12 is a similar jsection taken substantially on the line |2-I2 Yof Figure 9, looking in the direction of the arrows.

Figure 13 is an enlarged, fragmentary, top plan View similar to Figure 6, showing the upper .drawnV into the proper position withk Vthe outsole Ysecured thereto.

VReferring to the drawings in detail, wherein similar reference characters designate correspendingA parts throughout the several views, the letter M generally indicates my improved machine, and the same includes a supporting frame Y I5, which can be constructed in any desired vmanner Without departing from my invention. As shown, the frame'includes corner standards I6, which can be constructed from `angle iron. The lower endsY of the standards I6 can be flared outwardly, as at I1, to provide an enlarged base.Y The upper ends of the legs orV Ybars I8 areV front and rear supporting straps 22 Y g to which are connected the companion machine units 23 and '24.

These units 23 and` 24 are'formed identically making a shoe for the right footV and the other ing cross plates 21 and 28.

is used for making a shoe for the left foot.l The construction of the machine is such that an operator can conveniently make a pair of shoes for the right and left feet substantially at the same Y time. units, only one of Ythe same will be described in detail.

Each of the units includes a pair of spaced, parallel, longitudinally extending side plates 25 and 26, which are connectedV adjacent to their 0pposite ends by front and rear, transversely extend- The side plates 25 and 26 and the front and rear Supporting plates 21 and 28 can be connected together in any desired manner, such as by the useV of screws 29, and theseV Secured to the upperV surface of the plates 21 and 28 are pairs of spaced, longitudinally extending guide strips 33, which receive therebetweenV the front and Vrear slide plates 34 and 35, which also are adapted to move toward and away from the center of the frame.

`The top frame defined bythe side plates 25 In view of the similarity between the and 26 and the front and rear cross plates 21. and

28 are connected to the main or base frame I5 in any desired manner, such as by the use 4of corner upright posts 35', which are rigidly connected to the supporting plates 22 carried by said'base or main frame. As shown in Figures 11 and l2, the corner'posts 35' are rigidly connected to the top frame where the side and cross plates overlap.

The side slide plates 3| and 32 and the front Y and rear slide plates 34 and 35 carry the drawing-in platesor blades for the upper. The side drawing-in plates or blades, indicated by the reference character 36, are carried by the side slide plates 3| and 32 in a novel manner, which will now be described. Y

Mounted on the upper surface of the slide plates 3| and 32 by means of centrally disposed pivotboltsorv pins 31 'are' the lblade-carrying blocks 38. i lThe inner edges of the blocks 38 are rabbeted to receive the drawing-in plates or blades36, and said blades are detachably and rigidly secured to the, blocks by means of suitable fastening elements, such as screws 39.

By this arrangement, the side drawing-in plates and the blocks 38 are -free to plates. Y By referring to Figures 3 and 9, it can be seen that the side drawing-inplates extend from the heel seat of the shoe to the toe and havetheir inner edges sharpened and shaped to conform to the configuration of the Yshoe being made. Thus, the blades are curved to take care ofthe arch of the shoe and the like. `Normally, the 1 carrying blocks 38 for the drawing-in plates 36 are held in their proper balanced position by means of expansion coil springs 39, which are fitted Within suitable openings formed in the outer edges of the blocks and in openings formed in stop ribs 40 rigidly rock on their slide secured to the top surface of the slide plates 3| Y engage the upper to draw the same in over the last and insole, the blades can rock, so that the blades-can automatically conform themselves to 75.

eeniieiiretien ,and the position ei the snee The ier operating the Slide Plates will 13e later described- Tiie irontelidirls plete 34 deteeheblv and ed- -justably carries a pair of heel blades orY plates 4|, which are utilizedfor drawing in the upper over the last and the rear part of the insole. Any preferred means can be employed for adiusting the heel blades or plates 4|, so that the plates can be moved toward and away from one ,another and thereby permit the same to be adjusted to a particular shoe size. In the present instance, the heel blades 4| have been shown to b e provided with transversely extending -Slots 42, through which protrude bolts 43 carried by the slideplate. Winged vor similar nutsv 44 can be threaded on the bolts for holding the heel blades in proper position.

The rear slide plate 35 hingedly carries like companion toe blades 45 and 46. These blades 45.. and 46, like the blades 4|, have their inner faces sharpened and curved to conform to the particular style ofy shoe being made. Suitable pvot pins or. bolts 41 rockably connect the toe blades 45 and 46 to the inner ends of forwardly extending double-ended levers 48 and 49. These levers are in turn rockably mounted intermediate their ends on the slide plate 35 by 4means of pivot pins or bolts 5B. At this point, it will be. noted that a cover plate 5| is provided for overlying the levers 43 and 49, and suitable spacing plates-52 are disposed between the slide plate and said cover plate.

The outer corners ofthe toe blades 45 and 46 have formed therein guide slots 53, which receive guide bolts 54 carried by the slide plate 35. By this arrangement so far, it can be seen that by adjusting the levers 48 and 49 the toe plates 45` and 46 can be adjusted laterally to conform to the size of the shoe being made.

To. adjust the levers 48 and 49, the same can have. pivotally connected to` their' outer ends, by means of threaded pins Yor the like 55, nuts 56. These nuts 56 receive the oppositely threaded terminals of a turnbuckle screw 51.

The means. for moving all of the slide plates toward and away` from one another will now be described. The, operating means for the slide plates includes an operating ring or annular plate 66 located directly under the top frame. This ring is mounted for turning movement through a portion of the arc of a circle and can be supported by means of depending posts 6| rigidly carried by the top frame plates. Y

As illustrated, the lower ends of the depending supporting. posts are reduced in diameter and extend through guide slots 62 formed in said ring. The lower ends of the reduced terminals of the depending posts 6| carry nuts or the like 63- for engaging the lower face of the ring 6.0., and obviously suitable wear washers can be interposed between the operatingring, the depending posts, and the securing nuts or screws 63.

Onev side ofthe ring is provided with an outwardly projecting operating arm 64, which is engaged bythe upper end of a foot-operated leyer.'65. This foot-operated lever is rockably mounted intermediatev its ends on a stationary Divot bolt or shaft 66. l

By referring to Figure l, it canbeseen that the shaft.' 65., extends transversely across the mainframe |5mfor both of the units for the left and right shoes, and hence both of the foot levers ier the units., are supported. by. this. Same spring is anchored to the ring adjacent to the arm 64., and. the other end `of the Spring is an..- ehoredto the main frame. In order to hold the foot treadle 61 in a depressed position and the ring in its turnedppsition against Ythe tension of the coil spring 68 va suitable releasable l lock can be provided. l

As illustrated in Figure. 1., ythe main vframe can be provided With a rack bar 69, a selectedtooth 0f which Caribe engaged by an angle. bar `10 rigidly connected with thelever adjacent to its lower end. By shifting the lever 6 5 laterally with 'thefiootg the' angle bar 1|! een he digen gaged from the teeth of the rack bar. l

Asrpreviously indicatedl the ring 6D is employed for actuating all. of the slide plates, 'and hence the side slide plates 3l and 32 carry depending operating pins 1| and y12 respectively. The` front slide plate. 34A carries a similar depending operating pin 13', and the rear slide plate 35 carries a similar depending operating Din 14.

The pins 1| and 12 are received in'arcuate slotsy 15 and 16 formedin thering 6 6. The pins 1.3

and 14 are received in similar arcuate slots 1-1 and 18. Upon rotation of the ring 69, the pins 1|, 13, 13, and 14 followingthe contour of their respective slots, will be drawn inwardly thus for.- ing the slide plates toward one another. Y

It is desirable that the toe and heel plates move a fractional part of their full movement prior to the .operation Yof the side shoe plates, and consequently the slots 15 andr16 for the pins 1| and 12, can have their inner ends` formed substantially straight, as at 19, so that no moyement will be limparted to the pins 1| and 12 upon the rst turning movement of the ring. 1

To bring about the effective use of my machine for making different sizes of shoes, I have provided means for initially positioning the slide plates. Obviously, by changing the position of the slide plates and their pins relative to one l another, the desiredsizes ofA shoes can beaccominodated. Hence, I havel provided means for adjusting the pins 1|, .12, 13, and14 ontheir respective slide plates. Each of the adjusting means is the same, and hence only oneV will be described in detail. Y

Each of the said pins has secured to its upper end a slide block 80. This slide block rotatably receives the inner end of adjusting shaft lit. Relative movement between the shafts 8 iv and the guide blocks 86 isprelventedby means of collars 82 securedto the shafts engaging the opposite ends of the guide blocks.v The shafts 8| `are threaded, as at 83, for a portion of their lengths,`

and these threaded portions are received in feed nuts 84 rigidly carried by the slide plates.

'Handles 85 arerigidly connected to the shafts 8|, so that the shafts can readily be threaded into and out of the nuts 841er shifting the mentioned operating pins and their guide blocks 80,.

I lay greet, stress; 01.1 the. nerelerreegemeet of the toe plates 45 and 46, in that theseplates areso arranged as to efliciently draw andV vtuck in the. Atoepart ofthe upper over the last and IlQle WDQH trlj: 701i" l'ck-ig the. UPQL. i

intorthe slide plates' 3| and 32.

In use vof my improved machine'M, thecom- Y The initial movement of the blades 45 and 46 is straight in toward the toe of the shoe, and afterthese blades have traveled a certaindistance -with their slide plate 35, the same are rocked inwardly toward one another for bringing the sides of the Vtoe over the last and the insole. 1 Y y The means for bringing the'toe plates inwardly toward one another consists of rollers 86 carried by the side slide plates 3| and 32. These rollers are disposed in the path of the outer forward corners of the toe plates 45 and 46. Thus, during the operation of the machine, when the toeV plates 45 and 46 have been brought straight inwardly toward the toe, and the side slide plates 3| and 32 move toward one another, the rollers 83wil1 strike the outer forward corners of the toe plates and swing these plates on theirpivot 41. Contractile coil springsV 81 can be employed for normally holding the toe plates intheir open position. Y Y l It may be desirable to adjust the position of the rollers 86 relative to the. toe plates, and hence these rollers can be mounted on pins car- Y ried by brackets 8 9. YThese brackets 89; can be. slidably mounted on the slide plates 3| and 32 and can be held in any adjusted position desired f by means of` setscrews or the like 90 extending through slots formedl in saidn brackets 89 and bined insole and middle sole, indicated generally by the letter S, is nailed to the last L, and

the upper U with the 'welt WV sewed thereto is tterd on the last. As shown in Figures 6 and 7,

the combined insole and middle sole S includes Y a middle sole portion` 9|, which can be formed from leather or composition and an insole portion 92. The insole portion V92 is preferably formed from cork and isvof a lesser width and length than the middle sole portion 9|, so that right foot are placed in the otherV unit.

a flange or rabbet will be formed entirely around the combined insole and middle sole S. The last with the assembled parts, is placed within the opening in the top frame over' the drawing-in plates, and, if preferred, a support can be Aprovided for the last. 'Ihis support may consist of anV adjustable supportingpin93' carried bya bracket plate 94 boltedV or otherwise secured to the main frame.V Y

As previously intimated, a pair of the shoes is made substantially'at one time, and thus the partsof the shoe for the left foot are placed in one unit and the parts of the shoe for the operator can now press down onthe foot treadles,

one at a time, and the various drawing-in platesY will be moved toward the last and engage the shoe between the upper and the welt, effectively drawing in said upperV over the last and the flange part of the soles 'S until the inner edge of Ythe upper and itsY Welt engages the marginal 'surface of theV middlev sole portions 92 of the soles.- This is easily 'and simply accomplished due to the arrangement of the blades, andthe shoe upper is quickly and properly brought in over the'last and the sole. 1 Y

Whenthe uppers have been properly brought Yin andrlasted, an outsole O is coated with a Vquick-drying cement, and the exposed 'face of Y thevmiddle sole and the welt-can be similarly Y coated, if preferred.

The outsole O is nowY placed Yon the exposed face of the'middle sole portion 92 andthe welt and is left to dry, whileranother outsoleis taken Theand coated and is placed on the shoe for the other foot. The Vdrawing-.in plates form an eiective means for holding the upper in its proper brought-in positionwhile the outsole is being secured in place, and the blades also form .15 a rigid support for the welt, so that a good contact is insured between all parts of the weltran'd the outsole. Y

Y' As soon as the shoes are dry, the foot treadles are released and the completed shoes are removedV from the machine. The machine is now ready to receive another pair ofshoesxtovr be made. Y Y

From the foregoing description, it can be seen that I have provided an exceptionally simple and durable machine for bringing about the quick and efcient forming of pre-weltedLshoes, with a' minimum amount of effort on thepart of 'anV operator.

Changes in details may bermade without de- Y parting from. the spirit or the scope of my in-V vention, but what I claim as new is: Y.

1. A machine forforming pre-welted shoes l comprising side upper forming and drawing-'in Vposition of the toe and .heel blades accordingaoz to the length of a shoe being made, means for synchronously actuating all of said blades, said toe and heel blades including independent sections, and means for adjusting the position of the sections relative to one another to conform i to the width of a shoe being made.

2. In a machine for forming a pre-welted shoe, a top frame, for receiving'a last for supporting a prewelted upper and a combined insole .and middle sole, a slide plate on said frame movable toward the last, a toe forming and drawing-in blade carried by the slide plate, saidrblade in`- cluding a pair of independent sections having" sharpened, arcuate inner corners, adjusting lev'- ers rockably mounted intermediate Vtheir ends on the slide plate, pivot Vpins operatively connectingthekforward ends of the levers 'to the blade sections, and means for adjustingv the outer ends of the levers. Y f 3. In a machine for forminga pre-welted shoe, a top frame adapted to receive a last for a prewelted upper and a combined insole andmiddle sole, a slide plate on said top frame, an upper` toe forming and drawing-in blade on the slide plate, said `blade including a pair of independ- Y ent sections, each'having a sharpened, arcuatel inner corner, apair of double-'ended levers rockably mounted intermediate their ends on the slide plate, means pivotally connecting the blade sections to the inner ends of the-levers intermediate the ends oiv said blade sections, 'manual Vmeans for `synchronously adjusting the1levers,

topframe, and rollers on' the side slide plates '(45,Y

disposed in the path of the toe blade sections for moving said sections toward one another after predetermined movement of all of the slide plates.

5. A machine for :forming a pre-Welted shoe comprising a top frame, side slide plates mounted on the top frame, end slide plates mounted on the top frame, upper forming and drawingin blades carried by the slide plates, a rotatable operating member having arcuate slots therein, depending operating pins carried by the slide plates received in said slots, means for rotating the operating member through a portion of a revolution, and means for initially adjusting the position of the pins relative to their'slide plates including a guide on each slide plate, a block slidably mounted in each guide, means connecting the pins with the blocks, and hand feed screws rotatably connected to said blocks and adjustably carried by the top frame.

HARVEY A. SCHOLZ.

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