US2406462A

US2406462A - Machine for use in the manufacture of prewelt shoes

Info

Publication number: US2406462A
Application number: US466975A
Authority: US
Inventors: Eric A Holmgren
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1942-11-26
Filing date: 1942-11-26
Publication date: 1946-08-27
Anticipated expiration: 1963-08-27

Description

Aug. 27,1946. E. A. HOLMGREN I 2,406,452 I MACHINE FOR USE IN THE MANUFACTURE OF PREWELT SHOES Filed Nov. 26, 1942 6 Sheets-Sheet 1 Aug. 27, 1946. E. A. HOLMGR-EN 2,

MACHINE FOR USE IN THE MANUFACTURE OF 'PREWELT SHOES Filed Nov. 26, 1942 I ,6 Sheets-Sheet 2 Y I ma VT I Aug.'27, 1946. HQL'MGREN 2,406,462

MACHINE FOR USE IN THE MANUFACTURE OF PREWELT' SHOES Filed Nov. 26, 1942 6 Sheets-Shet s I Aug. 27, 1946.

E. A; HQLMGREN MACHINE FOR USE IN THE MANUFACTURE OF PREWELT SHOES Filed Nov. 26, 1942 EigQ 146 e Sheets- Sheet 4 g- 27, 1946- v E- A. HOILMGREN 2,406,462

MACHINE FOR USE IN THE MANUFACTURE OF PREWELT SHOES Filed Nov. 26, 1942 e Sheets-Sheet s 'JeM Figl &\\\\\W@ K g is I I 4 I 2 UL? 283 Patented Aug. 27, 1946 MACHINE FOR USE IN THE MANUFACTURE OF PREWELT SHOES Eric A. Holmgren, Beverly, Mas's., assignor to United Shoe MachineryCorporation, Flemington, N. J'., a corporation of New Jersey Application November 26, 1942,'se1-ia1 No. 466,975

This invention relates to machines for use in the manufacture of prewelt shoes and is herein illustrated in its application to machines for use in practicing off-the-last methods ofprewelt shoemaking such, for example, as the method set forth in my copending application for United States Letters Patent Serial No. 557,999, filed October 10, 1944. I 1

Prewelt shoes in the range of childrens sizes are found in the-lower price brackets and ma'nufacturers of this type of childrens shoe operate on a very small margin of profit andare constantly seeking improvements in their methods and machines calculated'to effect economies in the cost of manufacture. items in the cost of prewelt shoe manufacture is the initial cost of the lasts on which the uppers are made and the continual expense of maintaining, repairing, storing and sorting the lasts; In the manufacture of prewelt shoes, this item of expense is a much larger proportion of the total manufacturing cost than in the production of higher priced footwear. Thus, it will be understood that any commercially practicable system of making prewelt shoes which obviates in one aspect thereof consists in the provision in a machine for use in the manufacture of prewelt shoes of an inner form which takes the place of the last, said form being reversible for operation on right and left uppers, and means for holding said form against free upward movement. The illustrated form supports a prewelt' upper by its welted margin for the operation of wiping means which operates to bring the welted margin in over the margin of said form and to hold it in overwiped position while it is attached to a sole.

In another aspect thereof, the invention consists in the combination in a machine for use in the manufacture of prewelt shoes of an inner form for supporting a, prewelt upper by its welted margin, said form being reversible for operation on right and left uppers, and identical wipers .operable alternatively on right and left uppers One of the major' 31 Claims. (01. 12-1} 2v I to wipe the welted marginat opposite sides of the upper in over the margin of said form. It will be understood that the provision of wipers operable on both right and left uppers reduces the changing of wipers and also the number of wipers required for operation on a given run of shoe sizes. In order to provide wipers adapted to operate on a substantial run of sizes, the illustrated machine, in accordance with a further feature of the invention is provided with wiping means including a wiper constructed and arranged to swing about an axis intersecting its Wiping edge to the end that the wiper may-adjust itself to varying edge contours. The illustrated wiper is mounted to turn freely on its axis and has a suflicient range of turning movement to adapt it to operate alternatively on right and left uppers. It will'be understood that the wiping edge has shape or curvature generally common to the peripheral contour of right and left shoes in the run of sizes on which the Wiper is intended shank wipers and a toe wiper constructed and arranged to overwipe the entire toe portion of the welted margin. In accordance with anotherffeature of the invention,the illustrated toe wiper is reversible for operationon right and left uppers by t'urning it about an axis coinciding with the longitudinal median line of a shoe in the machine.

In order to provide a progressive wiping action of said forepart wipers, 'said wipers, in accordance with a feature of the invention, are normally so oriented that their rear end portions enter the welt crease in advance of theforward portions of the wipers, said wipers swinging inwardly about their rear end portions to complete the overwiping movement. The illustrated side wipers are constructed and arranged tooperate on that portion of the upper extending rear- Wardly from the shank wipers and have straight wiping edges which operate on as much of the welted margin as lieswlthin the range of their overwiping movement; Inasmuch as the heel portion ofthe upper is, preferably, molded prior to the operation of the illustrated machine," it is,

\ panying drawings and V of the present'invention;

of'Fig.12; 7

deemed unnecessary to provide meansfor overwiping the curved heel end portion of the welted margin. It will be understood that due to slight differences in the line of the welted upper at opposite sides of the rear part of the shoe, the wiping edges of the side wipers will not be perfectly alined with the inner form on which the upper is mounted butsuch differences as exist are relatively slight and the use of narrow shank wipers taken in conjunction with the relative rigidity of the welt enables the wipers to effect a substantially uniform over-wipe of the welted margin.

Referring to Fig. 1, the illustrated machine is provided with a plurality of wipers constructed and arranged to enter the welt crease of a prewelt upper and to wipe the welted margin inwardly over the margin of a sole-shaped form I corresponding in size to the uppers to be oper- V and left uppers.

ated upon, the form 20 illustrated in Fig. 1 corresponding to a juvenile size 9 upper.

In order that the form may serve t'o impart the desired convex shape to the In order to insure the entrance of the wipers into the welt crease, the illustrated upperesup porting form, in accordance with a further feature of the invention, is initially slightly :ele: vated so that the wipers engage the upper along a a line slightly below the welt crease, and means is provided for moving said form downwardly so that the wipers register with the welt crease. During the downward movement-of said form, the wipers are held against the upper under a relatively light pressure and, after the wipers come into registration with the welt crease, relatively heavy pressure is imparted thereto to complete their overwiping movement. I

These and other features of the invention will now be described with reference .to the accompointed out in the appended'claims. I 1 In the drawings, 7 a Fig. 1 is a plan view illustrating the ,worksupporting plate and the wiper assembly with the wipers in their'advanced positions, portions 'of the wipers being broken away;

Fig. 2 .is a plan view similar to Fig. 1 showing the wipers in relation to a work-supporting plate of the smallest size in the run of sizes on which the wipers operate; r

Fig.3 is a front elevation, partly broken away, illustrating a machine'embodying the features Fig. 4 is a sectional elevation somewhat enlarged taken substantially on the line IV-IV of Fig. 12; V g r Fig. 5 is a detail sectional view taken on the line.VV ofFigA; .1 I

'Fig. 6 is asectionaljview taken on the line vIVI;Of 1 V 7 i Fig. 7 is 'a-side elevation with partsof the frame broken away and the machine table shown in section;

Fig. Sis a section taken on the line VHF-VIII of Fig. '7;

Fig. 9. is a sectional elevation taken substannative work-supportingmechanism and an up.- perthereon shown in longitudinal section;

, Figl 16 is a rear elevation of the mechanism illustrated in Fig. 15, the work-supporting parts being shown" in central longitudinal section; and

Fig. 17 is ,a plan view,.partly in section, illustratingthe work-supporting members shown in shoe bottom the top and bottom surfaces of the form maybe made convex to correspond generally to the shape of the sole face of a last. For convenienceof manufacture, the shape of the sole face of a last issimulated in the. illustrated "form by providing a flat bevel 2| (Figs. 9 and 14) in its marginal portion. The opposite side poran inch, as shown in Fig. 1. V size8 upper, the toe wiper and the forepart wipers tions of the upper are wiped inwardly over the form 20 by side wipers 22, narrow shank wipers 2 and forepart wipers 26, while the toe portion of the upper is overwiped by a single toe Wiper 2'8. Thewipers 22, 24, and operate on a run of sizes from 2 to 9, while the toe wiper 28 operates only on two'sizes, that is, 8 and 9. In operating on size 9, the toe wiper and the forepart Wipers in their respective overwiped positions are spaced apart from each other about one-sixth of In operating on a would be substantially contiguous. In Fig. 2, the

.

wipers

22, 24 and 26 are shown in their respec.

tive over-wiped positions on a form 30 corresponding to a size 2 upper'and a toe wiper 32 is also shown in its overwiped position, said toe wiper being constructed for operation on upper sizes 2 and 3. It will be seen that the toe wiper 32 in its overwiped position illustrated in' Fig.

2 is substantially contiguous to the forepart wipers 26. 7 h

Referring now to'Fig. 3, each side wiper 22 is secured by headed screws 34 to the crosshead of a l shaped bar 35 which in, turn, is secured to an arm 38, the lower portion of which is pivotally mounted, on a cross-shaft 48 secured in blocks v l? extending upwardly from a table 44 secured .to the up er portion of a standard 45. ,Each

shank wiper 24 is an angular plate (Figs. 3 and 119 the downward extending portion of which is secured by headed screws 48 to the upper portion of a bar 56, the lower portion of which is secured to an arm 52 pivotally mounted at its lower end'on the cross-shaft Ell. Thus, it will be seen that the side wipers '22 and the shank' wipers 2i advance into operating position in an arcuate path the center of curvature of which coincides with the cross-shaft 48. When the wipers come into the welt crease, as shown in Fig. 11, the wiper bars are substantially vertical and during the actual overwiping movement,

which is not more than a quarter of an inch in extent, the wipers advance in a substantially horizontal direction widthwise of the upper. It will be understood that the side wipers and the shank wipers during their overwiping movement are held-in fixed relation to the wiper bars, said bars in turn being held in fixed relation to their carrying arms and, consequently, said wipers maintain a, substantially fixed orientation during 3 their overwiping movement.

part wipers 26, on the other hand, swings during its overwiping movement about a substantially vertical axis identified by a dot 54 in Figs. land 2,

sai'd axis bisecting the wiping edge of the wiper.

The illustrated form is a wooden plate so constructed that 7 it may be reversed for operation on both right Each of the foreraeocnea The forepart wipers advance with their rounded corner portions 56 foremost and, after said rounded portions come into engagement with the welted margin of the upper, the forepart wipers, during the continued inward movement of their carrier arms, swing about said rounded corners as the wipers are oriented with relation to the welted margin of the upper. It will be understood that the wipers turn on their axes 54 during their inward movement. Referring to Figs. 3, 7 and 12, each of the illustrated forepart wipers 26 is secured by a headed screw 58 and a dowel pin 68 to the crosshead of a T-shaped bar 62. The bar 62 is mounted for swiveling movement about the axis identified by the dot 54 on an arm 64 which is pivotally mounted at its lower portion on the cross-shaft 48. For swiveling the bar 62 on the arm 64 said bar has ears 66 which register with ears 68 on the arm, a fulcrum pin 18 extending through the adjacent portions of said ears. Each forepart wiper-is normally. oriented with its rounded corner portion foremost by a torsion spring I2 surrounding the pin I8 and positioned between the ears 68, one end of said spring bearing against the arm 64 and the other end against the bar 62. The spring 12 urges the .bar 62 in a direction such that a stop screw 14 adjustably mounted in a plate I6 secured to the lower portion of the bar 62 is normally held against the arm 64.

The toe wiper 28 (Figs. 4 and 6) is removably mounted in a plate or holder I8 which has a deep groove extending inwardly from its forward edge face for the reception of the toe wiper. The toe wiper is inserted into its holder by movement widthwise thereof through the groove in the wiper holder, the path of movement of the wiper relatively to its holder being determined by the regis-.

tration of a pin 88 in the holder with a groove 82 extending widthwise of the wiper from a side edge to its central portion. The widthwise position of the. wiper in the holder is determined and maintained by a headed spring-pressed pin 84 mounted in a hollow hub 86 of the wiper holder 78 and arranged to enter a notch 81 in the wiper.

The notch is made slightly wider than the diameter of the pinto enable the wiper to be adjusted widthwise by its engagement with the upper. The hub 86 is mounted ina bore in the upper end portion of an arm 88 for turning movement about an axis which coincides with the longitudinal median line of shoe in the machine when the wiper is in its overwiping position. The wiper assembly is turned 180 in the arm 88 to adjust the wiper to operate alternatively on right and left uppers. For positioning the wiper lengthwise thereof relatively to the arm 88, the inner portion of the hub 66 has a flange 98 which engages the inner surface of the arm. For holding the wiper against turning in the arm 88, the crosshead of a T-shaped pin 92 (Fig. 5) alternatively engages slabbed-off portions 94 of the hub 86. The pin 92 is slidably mounted in a bore in a plate 96 secured to the inner surface of the arm 88 and is urged upwardly by a spring 88 in said bore. It will be seen from Fig. 4 that the pin 82 also serves to maintain the lengthwise position of the toe wiper by holding the flange 88 against the arm 88. For mounting the arm 88 its offset lower portion I88 is connected by short, parallel-motion links I82 to an arm I84 having an extension I86, the end portion of which is pivotally mounted between ears I88 (Fig. '7) extending upwardly from the machine table 44. The'arm 88 is longitudinally positioned relatively to the arm I84 between a stop screw I I8 in the lower end portion of the arm 88 arranged to engage an extension II2 of the arm I84 and a spring-pressed pin I I4 mounted in a bore in the arm I88, said arm having a recess I I6 which receives the extension I I2 and into which the screw I I8 and the pin I I4 project.

Referring now to Fig. 13, for arresting the overwiping movement of the side wipers .22, each of the wiper-carrying bars 36 carries an abutment member or block I I8 in a groove in its upper end portion, the convex inner end I28 of said block being'arranged to engage the periphery of a shoe upper onthe form 20. It will be understood that the block I I8 arrests the advancement of the bar 36 and determines the extent of overwipe of the side wiper 22. In order to vary the extent of overwipe of the side wipers to meet the requirements of the particular type of upper to be operated upon a headed screw I22 is mounted in the bar 36 and provided with a flange I24 which is seated in a suitable groove in the block I I8. Inasmuch as the side wipers 22 and the shank wipers 24 are advanced by a common actuator the blocks H8 also serve to arrest the overwiping movement of said shank wipers. For arresting the overwiping movement of the forepart wipers 26 (Fig. 12) each bar 62 has mounted in its upper end portion an abutment member or block I26 similar to the block H8 and a block adjusting screw I28 having a flanged head which operates in the block I26 in the same manner as the screw I22 above described.

Referring to Fig; 9, the illustrated form 28 rests on the upper surface of the head I38 of a bar I32 and is positioned relatively to the wipers by a headed pin I34 projecting upwardly from the head I38 and extending through a hole I36 in the form 28, said hole being large enough to permit the head of the pin I34 to pass throughit. The head of the pin I34 is seated in an offset counterbore 988 (Fig. 1) extending toewardly from the hole I36, the diameter of the counterbore being the same as the diameter of the head of the pin I84. The rear portion of the form 28 is positioned by a headed pin I48 (Fig. 9) projecting upwardly from an arm I42 and extending through a hole I44, the head of the pin being seated in a heelwardly offset counterbore I45 (Fig. 1) in the rear portion of the form 28. The arm I42 is pivoted at M5 to a downwardly extending portion of the head I38 and is urged in a counterclockwise direction, as seen in Fig. 9, by a spring I48 mounted in a bore in the head I38. The spring I48 urges the pin I48 heelwardly and away from the pin I84, thus maintaining the position of said pins relative to the form 28 illustrated in' Fig. 9 and holding the form in a predetermined central position in the head of the machine. In this position the longitudinal median line of the form is be replaced by another form of a different size,

or it may be inverted when changing from right 'to left uppers, or vice versa, by merely pressing the upper portion of the arm I42 to the right, as seen in Fig. 9, until the heads of the pins I34 and I48 are brought into alinement with the holes I86 and I44, whereupon the form 28 can be lifted I off the head of the bar I32. Upon releasing the arm I42 after the form 28 has ben thus removed from the bar I32, said arm is swung in a counterclockwise direction by the spring I48 and comes '7 to rest when an inward extension I58 of the lower portion of said arm engages the bar I32. In order that the headed pins I34 and I48 may operate on the form 26 in the manner described after the form has been inverted, the counterbores I38 and i 25 are reproduced in the bottom of the form, as shown in Figs. 9 and 14. The bar I32 is slidably mountedin a channel rail I52 projecting upwardly from the table and is held seated in said channel rail by headed screws I54 mounted in the web of said rail and arranged to extend through vertical slots I56 in the bar I32. The form 26 is yieldingly held at the limit of its upward movements by a spring I58 one end of which 7 engages apin I65 in the bar I32 and the other end'of which engages a fixed pin I52. The spring holds the bar I32 in its position illustrated in Fig. 9. the bar being located by the engagement of the lower end walls of the slots I56 with the screws I54.

For Operating the toe wiper 28 a treadle I64 (Fig. 3) is secured to a cross-shaft I66 in the base of the standard d and is connected by a link I68 to the forward end portion of a rocker lever Ill! secured to a, .rockshaft I12. Pivotally mounted on trunnion pins in the bifurcated rear portion of the rocker lever I18 (Fig. 7) is a block I'M which is bored to receive in sliding engage- 'ment a rod I'I6the upper end portion of which has a universal connection to the lower end of 'a link I78 (Fig. 3) which is pivoted at its upper end to'the lower portion of the arm I64 which carries the toe wiper assembly. For stabilizing the link I'Ifi an arm L6 is pivotally mounted at one end on a bracket I82 extending downwardly from the table 44 and at its opposite end is pivoted to the link I18 in parallel relation to the extension I06 of the arm I64. Upon depression of the treadle I 64 the rocker lever I18 imparts upward movement to the rod H6 through a spring I 84 surrounding said rod and confined between a collar I86 on said rod and the block I14. The upward movement of the rod I'IB operates through the mechanism above described to bring the toe wiper 28 into engagement with the outer surface of a prewelted upper I88 on the form 28 at a point slightly below the welt I89. After the toe wiper 28 engages the upper, the treadle IE4 is further depressed to a small extent to compress the spring I84 slightly thus to urge the toe wiper under light pressure against the upper. Th'ereupon a latch bar I98 (Fig. 7), freely mounted on a cross-shaft I92, engages a pin .594 projected laterally from an arm I96 fixed to the cross-shaft I 66 to hold the 'treadlel64 against upward movement. The operator now depresses a treadle 93 to complete the operation of the machine. The treadle I98 operates first to bring the side wipers 22, shank wiper 24', and forepart wipers 26 into engagement with the up per under relatively light pressure, then imparts downward movement to the bar I32 to brin the upper I88 into position to receive the wipers within the welt crease; and finally imparts'rela- I tively heavy pressure to the side wipers, the shank wipers and the fcrepart wipers, and also to [the toe wipers, to cause themto wipe the welted margin of the upper in over the form 28. For

' actuating the side Wipers, shank wipers, and forepart wipersthe treadle I98 is'connected to a rod 286 which, asshown in Fig. 9, extends upwardly through a hole in. the table 44 and'carries near its upper end a plate282,-said plate having a hub 254 whichispinned to the rod 258. Six vertical 7 rods286 (Figs. 3 and9) extend upwardly through holes in theplate 282, there being three of said and is pivoted to a short downward extension of an arm 228 (Fig. '7) secured to one of the wiper-carrying arms. The pivotal connection of each rod 266 to its arm 228 is so positioned relatively to. the shaft 48 that the rod 206 moves downwardly with the least possible horizontal component of movement of its upper end portion. Each rod is supported by the engagement of a collar 256 fixed thereto with the top of the plate 262". Referrin to Fig. 8, each rod 266 carries a light spring 2I0 and a relatively heavy spring 2'I6 which operate in sequence by downward movement of the plate 28.2 first to maintain slight pressure of the wipers against the upper during the downward movement of the work-supporting form 26, and, finally, to apply relatively heavy overwiping pressure to the wipers. As shown in Fig. 8-, the light spring 245 surrounds the rod 266 and is confined between a sleeve 2I2 slidably mounted on the rod above said spring and a nut 2I4 below said spring. The relatively heavy spring 2I6 surrounds the lower portion of the rod 226 and is confined between a washer 2I8 which abuts a nut 220 and a washer 222 (Fig. '7) supported by a nut 224. A sleeve 226 surrounds the light spring 2I6 and is centered by the sleeve lit and supported by the washer 2I8'. It will be understood that there are six assemblies such as that illustrated in Fig. 8,0119 for each of the rods 2-86. ment of the plate 282 by the treadle I98, said assemblies move downwardly as a unit until the Wipers engage the shoe and arrest the downward movement of the rods 266, whereupon further downward movement of the plate 252 compresses the light springs 2I'0 until the bottom surface of said plate engagesthe upper end of each sleeve 226. Further downward movement of the plate.

282- operates through said sleeves to compress the heavy springs 2I6. The downward movement of the work-supportin form 20 is timed to occur when the wipers are under the light pressure of the springs 2Ifl.

Upon the completion of the downward movement of the worksupporting form, the heavy spring 2I6 comes I32 by headed screws 232, said bar having a h'ori-' zontal bifurcated end portion through which'extends the rod 288. For imparting downward movement tothe bar 238, a washer 234 i freely mounted on said rod and supported by a collar 233 secured to said rod. Upon completion of the inward movement of the wipers, the washer 234 V engages the bar 238 and through the action of a spring 233 surrounding the rod 200 moves the bar' I32 downwardly until it is arrested by the engagement of a stop screw 236 carried by said bar with the upper end of the channel rail I52.

Further depressions of the treadle I98 after the downward movement of the bar I32 has been arrested moves the rod 226 downwardly relatively to the L-shaped bar 235 and advances the wipers under the relatively heavy pressure'of the springs 2I6 to perform the overwipingoperation." It should be noted that the final pressure against the wipers, while'it is relatively heavy During the downward move-- For imparting downward movement 91 as compared with the initial pressure, is not heavy enough to apply any considerable force against the welted margin of the upper, said final pressure being no more than is required to insure the complete overwiping of the side portions of the upper. While the treadle I98 is applying relatively heavy pressure to the wipers at opposite sides of the shoe to effect the overwiping operation a screw 240 (Fig. 7) carried by an angle plate 242 secured to the treadle engages and imparts downward movement to the arm I96 thereby swinging the rocker lever I19 in a counterclockwise direction, as seen in Fig. '7, to increase the compression of the spring I84 thus to insure a complete overwiping movement of the toe wiper. Upon the completion of the downward movement of the treadle I98, a latch bar 244, identical to the latch bar I90, engages a pin on said treadle to hold the treadle against the return movement. It will be understood that the latch bars I98 and 244 operate to retain the wipers in their overwiped positions after the operator takes his foot off the treadle. While the wipers are so held, a sole, usually an outsole, is cement-attached to the welt and thereupon the latch bars are released to permit the return of the operating parts to their rest positions and to release the upper for removal from the machine. For so releasing the latch bars, the illustrated machine is provided with a hand lever 246 (Fig. 3) secured to the left end portion of the cross-shaft I92 to the central portion of which there is secured an arm 258 (Fig. 7) which carries in its lower end a pin 252 which engages the two latch bars when the handlever 246 is swung rearwardly, thus disengaging the latch bars from their pins and permitting the return of the operating parts to their respective rest positions by the operation of suitable treadle springs.

In Figs. 15, 16 and 17 there is illustrated an alternative work-supporting mechanism comprising a forward plate or form 254 which supports the forepart and shank portion of a prewelt upper by its welted margin and a heel form or block 256 which has substantially the surface contour of the heel end portion of a last. Said forms are relatively movable lengthwise of the upper into a contracted position in which they are slightly shorter in over-all length than prewelt uppers to be mounted thereon. Upon relative lengthwise movement away from each other,

said forms fill and slightly tension the upper, as shown in Fig. 15, and the heel block imparts the desired shape to the heel portion of the upper.

For causing the heel block 256 to register at all I times with the rear portion of the form 254, said form has a heelward extension 258 (Fig. 17), the opposite side walls of which engage the side walls of a recess 269 in the heel block. Said recess is covered by a sole plate 262 (Fig. 15)

which has a forwardly extending margin which bridges the gap between. the block 256 and the form 254 and is seated in a shallow recess 264 (Fig. 17) in the rear portion of the form 254. Said form is mounted on the head 266 of a bar 268 similar to the bar I32 which supports the form 28. As in the case of the bar I32, the bar 268 has mounted on its head 266 aheaded pin 210 which extends through a counterbored hole in the form 254 and said bar carries a swinging arm 212 which has a similar pin 214 extending upwardly therefrom, said pins operating in counterbored holes in the form 254, as in the formsupporting mechanism illustrated in Fig. 9. The

ward extension 280 of the bar 268. For position- 7 ing the heel block on said post, a tongue 282 extends upwardly therefrom for engagement Within a groove 284 extending heelwardly from the central portion of the recess 260, aid tongue being held seated within the groove in the heel block by a crosspin 286 which engages the forward edge face of said tongue. For operating the slide 218 to move the heel block toward and from the form 254, a hand lever 288' is pivoted at 290 on the extension 280. said hand lever is a triangular plate 292 the narrow end portion of which is pivoted on a headed screw 294 mounted in the slide 218. The wide end portion of the plate 292 is provided with three holes 296 arranged in a straight line extending upwardly at' an inclination away from the heelblock 256, said holes receiving alternatively a headed pin 298 which also extends through a hole in the central portion of the hand lever 288 to enable said plate 292 to serve as a link connectin the hand lever to the slide 218. A set screw 39!! in the hand lever holds the headed pin in position. ,The hand lever. is movable between two extreme positions determined by the engagement of a spring-pressed pin 382 projecting from the bifurcated end portion of said hand lever with shoulders 384 and 396 in the extension 286. It will be understood that in the raised position of the hand lever, the form 254 and heel block 256 are in their contracted position ready to receive an upper to be operated upon and, in the lower position of the hand lever illustrated in Figs. 15 and 16, the work-supporting parts are expanded to tension the upper lengthwise by straightening of the inverted toggle formed by the plate 292 and the portion of the lever 238 between the

pivots

296 and 298. It will be understood that the spring-pressed pin 392 acting against the shouldered portions of the extension 280 yieldingly holds the hand lever in either of its extreme positions. The holes 296 in the triangular plate 292 permit an adjustment of the work supports for operation on three sizes of uppers. Before operatin on uppers in sizes outside the range of adjustment of the plate 292, the form 254 is removed and a similar form of a suitable size is substituted. The heel block operates on all sizes within the run of sizes on which the side; shank and forepart wipers operate and, consequently, in the usual course of shoe manufacture will seldom be removed from the post 216 and a difierentsize of heel block substituted.

In the operation of the machine in practicing the method set forth in my copending application hereinbefore referred to, a prewelt upper, for example, the upper I88 illustrated in Fig. 3, is loosely mounted on the form 29 with the welted margin at the toe end of the upper positioned adjacent to the upper surface of the form and with the rear portion of the upper s0 located that the heel end of the form engages the upper substantially midway between its welted margin and its top edge. With the upper thus loosely positioned on the form, the operator depresses the treadle I64 to bring the toe wiper 28 into engagement with the toe portion of the upper slightly below the welt and to press the wiper lightly against the upper. the downward movement of the treadle, the latch bar I90 (Fig. 7) is swung to the right by a spring 320 bringing its shouldered lower end portion into Cooperating with.

Upon completion of latching engagement with the .pin I34 on the arm a The operator now presses the heel ,portion I96. of the upper downwardly until the welted margin,

all around the upper, lies adjacent to the uppertreadle. 198 is now depressed first to bring the wipers at opposite sides of the upper into engagement with the upper under light spring pressure, then to move the work support together with the upper, I68 mounted thereon downwardly until I the wipers register with the welt .crease in. the upper, and, finally, to advance the wiperinto the welt crease under relatively heavy spring pressure to complete the overwiping operation. .Up-

on completion of the downward movement of the 1. treadle I98, the latch bar 244 locks the treadle against return .movement thus retaining the wipers in their respective overwiped positions in which they support the outward extension of the welt while a sole is cement-attached to the bottom face of the welt.

When the illustrated machine is provided with Work-supporting mechanism illustrated in Figs. 15, 16 and 17, the method of handling the upper differs from the method above described in that the upper is in the first instance mounted in a horizontal position on the form 254 and the heel block 255, as shown in Fig. 15. To facilitate so mounting the upper, the two-part work support is initially contracted lengthwise thereof, the heel zsoa i block 256 being positioned at the limit of its movement toward the form 254. After the'u-pper is mounted on the work-supporting members and the toe wiper has been brought to bear against the toe portion of the upper, the hand lever 288 is moved downwardly to move the heel block away from the form 254, thus imparting lengthwise tension to the upper and holding it for the further Operation of the wipers.

In Figs. 10 and 11 the illustrated machine is shown in, successive stages in its operation on a.

prewelt shoe having an insole and a filler, and an outsole initially cement-attached to the welt and filler. In the manufacture of such shoes, a filler 3H] iscement-attached to an insole 3l2 andthe 3 assembly thus provided is mounted on the form 2B,.asshown in Fig. 10, and the wipers operate to .wipe the welted margin inwardly over the exposed margin of the insole and into contact 1 with the edge face of the filler. While the out- V ward extension of the welt is supported by the 1 wipers, an outsole 3M (Fig. 11) is cement-attached to the welt and filler.

It will be understood that the utility of the illustrated machine is not limited to its illustrated use 1 in the manufacture of prewelt shoes having an insole, a filler and an outsole attached directly 1 to the welt but may be employed in the manufacture of all types of prewelt shoes in which the welted margin is wiped inwardly to position it for =1; attachment to a sole. It will also be understood that while the welted margin in the process here- 1 in illustrated is secured in over-wiped position by the cement attachment of the outsole thereto, it

, is immaterial to the present invention what process is employed to secure the welted margin in by cement or by suitable fastenings to the insole or the filler or to both insole and filler in which case the attachment of the outsole could take overwiped position. It could, if desired, be secured 7 12 place after the shoe is removed from the illustrated machine.

Upon completion of the operation of themachine and themanual operations performed while the upper is held in over-wiped position, the hand lever 2.4.6 (Figs. 3 and '7) is operated to disengage the latch bars I90 and 244 from the parts on which they operate whereupon a spring .3l6

operating on the arm I96 raises the treadle I54.

and a spring 3I8 raises the treadle 5.98 returning the wipers to their open or outspread position illustrated in Fig. 3 and leaving the shoe free to be removed from the form 20.

Preferably the prewelt upper is prepared for the operation of the illustrated machine by preshaping or expanding the end portions of the upper and by so shaping or arranging the welted margin that the welt lies in substantially soleattaching position with its outward extension standing away from the bottom margin of the upper and providing an open welt crease adapted to receive the wipers of the illustrated machine, and the inward extensions of the welt and upper arranged to overlie the margin of the upper-supporting form of the illustrated machine, or an insole mounted thereon. While it is within the scope of the present invention to perform the vpreshaping operations by any known means, I

prefer to employ for this purpose a machine such as'that illustrated in United States Letters Patent No. 2,359,762, granted October 10, 1944, on an application filed in my name.

Having thus, described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for use in the manufacture of prewelt shoes, an inner form for supporting aprewelt upper by its welted margin, said form being reversible for operation on right and left uppers,

and means for holding said inner form against free upward movement.

2. In a machine for use in the manufacture of prewelt shoes, an inner form for supporting a I prewelt upper by engagement with the welted margin about the entire periphery of the upper, said form being reversible for operation on right and left uppers, and disengageable means for holding said inner form against free upward movement.

'3. In a machine for use in the manufacture of prewelt shoes, an inner heel form and an inner forepart form for supporting the forepart and shank portion of a prewelt upper by its welted margin, said inner forepart form being reversible for operation on right and left uppers, and disengageable means for holding said inner formagainst free upward movement. 7

4. In a machine for use in the manufacture of prewelt shoes, an inner form for supporting a prewelt upper by its welted margin, said form having a surface characterized by a raised central portion, said surface corresponding generally to the convex sole face of a last, and means on which said form is reversibly mounted for operation on right and left uppers.

5. In a machine for use in the manufacture of prewelt shoes, a heel form for supporting the heel portion of a prewelt upper, an inner form for supporting the forepart and the shank portion of a prewelt upper, said inner form having upper and lower surfaces characterized by raised cen- 6. In a machine for use in the manufacture of prewelt shoes, a heel form for supporting the heel portion of a prewelt upper, an inner form for supporting the forepart and the shank portion of a prewelt upper, said inner form having upper and lower surfaces characterized-by raised central portions, said surfaces corresponding generally to the convex sole face of a last, means on which said inner form is reversibly mounted for operation on right and left uppers, and means for effecting relative movement of the heel form and said inner form lengthwise of an upper supported thereon.

'7. In a machine for use in the manufacture of prewelt shoes, an inner form for supporting a prewelt upper by its welted margin, said form being reversible for operation on right and left uppers, and means for wiping the welted margin in over the margin of said form.

8. In a machine for use in the manufacture of prewelt shoes, an inner form for supporting a prewelt upper by its welted margin, said form being reversible for operation on right and left uppers, and identical wipers operable alternativel on right and left uppers to wipe the welted margin at opposite sides of the upper in over the margin of said form.

9. In a machine for use in the manufacture of prewelt shoes, an inner form constructed and arranged to support a prewelt upper by its welted margin, said form being reversible for operation on right and left uppers, and means for wiping the welted margin in over said form including a wiper constructed and arranged to turn about an axis intersecting its Wiping edge.

10. In a machine for use in the manufacture of prewelt shoes, an inner form constructed and arranged to support a prewelt upper by its welted margin, and means for wiping the welted margin in over said form including a wiper constructed and arranged to turn about an axis substantially bisecting its wiping edge.

11. In a machine for use in the manufacture of prewelt shoes, an inner form constructed and arranged to support a prewelt upper by its welted margin, a wiper for wiping a portion of the welted margin in over said form, a carrier on which said wiper is mounted for turning movement about an axis intersecting its wiping edge, said wiper being mounted to move freel about said axis to adjust itself to the periphery of said inner form.

12. In a machine for use in the manufacture of prewelt shoes, an inner form constructed and arranged to support a prewelt upper by its welted margin, a forepart wiper mounted to turn on an axis intersecting its wiping edge, said wiper having a range of turning movement sufiicient to adapt it to operate alternatively on right and left uppers.

13. In a machine for use in the manufacture of prewelt shoes, a plurality of wipers constructed and arranged to operate within the welt crease of a prewelt upper, said wipers comprising a, toe wiper constructed and arranged to be inverted for operation on both right and left uppers, and a pair of forepart Wipers constructed and arranged to be oriented by their engagement with the upper.

14. In a machine for use in the manufacture of prewelt shoes, a pair of identical forepart wipers mounted to swing about axes intersecting their wiping edge thereby to effect their orientation relatively to the upper, and a toe wiper constructed and arranged to overwipe substantially all of that portion of the welted margin extending toewardly from the forepart wipers, said toe wiper 14'? 7 being reversible for operation on right and lef uppers.

15. In a machine for use in the manufacture of prewelt shoes, a plurality of wipers constructed and arranged to operate within the welt crease of a prewelt upper, said wipers including, a pair of side wipers having a fixed orientation and a pair of forepart wipers constructed and arranged to be oriented by their engagement with the upper.

16. In a machine for use in the manufacture of prewelt shoes, a plurality of wipers constructed and arranged to operate'withinthe welt crease of a prewelt upper including side wipers and shank Wipers each having a fixed orientation, and

forepart wipers constructed and arranged to be oriented by their engagement within the welt crease.

17. In a machine for use in the manufacture of prewelt shoes, a plurality of wipers constructed and arranged to operate within the welt crease of a prewelt upper comprising side wipers, shank wipers, a toe wiper constructed and arranged to overwipe the entire t-oe portion of the welted margin, and forepart wiper constructed and arranged to be oriented by their engagement with the upper in the welt crease.

18. In a machine for use in the manufacture of prewelt shoes, a plurality of wipers constructed and arranged to operate within the welt crease of a prewelt upper comprising side wipers, shank wipers, and a toe wiper constructed and arranged to overwipe the entire toe portion of the upper, all of said wipers having a fixed orientation, and apair of forepart wipers constructed and arranged to be oriented by their engagement with the upper in the welt crease.

19. In a machine for use in the manufacture of prewelt shoes, a plurality of wipers including a pair of fo-repart wipers constructed and ar ranged to operate within the Welt crease of a prewelt upper, said wipers being normally so oriented that their rear end portions enter the welt crease in advance of their forward portions, said wipers during their continued advancement swinging about their rear end portions until they have been oriented relatively to thewelted margin by their engagement with the upper.

20. In a machine for use in the manufacture of prewelt shoes, a forepart wiper constructed and arranged to operate within the welt crease of a prewelt upper, a carrier on which said wiper i mounted for turning movement on an axis intersecting its wiping edge, and yielding mean for so orienting said wiper that its rear end portion enters the welt crease in advance of the forward portion of the wiper, the wiper during its continued advancement turning about the aforesaid axis until the wiper has been oriented by its engagement within the welt crease relatively to the periphery of the upper.

21. In a machine for use in the manufacture of prewelt shoes, a plurality of wipers constructed and arranged to operate within the welt crease of a prewelt upper including a pair of forepart wipers, a pair of shank wipers, and a pair of side wipers having straight wiping edges constructed and arranged to operate on that portion of the upper, extending rearwardly from the shank Wipers, which lies within the range of the straight wiping edges of said wipers.

22. In a machine for use in the manufacture of prewelt shoes, a plurality of wipers constructed and arranged to operate within the welt crease of a prewelt upper comprising a toe wiper coni constructed and arranged to overwipe that portion of the welted margin, extending rearwardly from the shank wipers, which lies within the range of wiping movement of the straight wiping edges of said wipers.

23. In a machine for use in the manufacture of prewelt shoes, means for supporting a prewelt upper off the last, a plurality of wipers'constructed and arranged to operate within the .welt crease, means for advancing the wipers into engagement with a portionof the upper adjacent to the welt crease, and means for moving said supporting means so to position an upper thereon that the wipers register With the welt crease.

2 4. In a machine for use in the manufacture of prewelt shoes, an inner form, a plurality of wipers constructed and arranged to operate within the welt crease, means for actuating said Wipers to bring them into engagement with an upper on said form'along a line adjacent to the welted margin, and means for moving said inner form and the upper thereon to cause said wipers to register with the welt crease.

25. In a machine for use in the manufacture of prewelt shoes, an inner form for supporting a prewelt upper off the last, a plurality of wipers constructed and arranged to operate within the welt crease, means for urging said wipers under relatively light pressure against the upper along a line adjacent to the welted margin, means for moving said inner form heightwise of the upper to cause said wipers to upwipe said upper and to be brought into registration with the welt crease, and means operating thereafter to apply relatively heavy overwiping pressure to said wipers.

26. In a machine for use inthe manufacture of prewelt shoes, an inner form for supporting a prewelt upper by the inwardly extending portion of its welted margin, a plurality of'wipers constructed and arranged to operate within the welt crease, a member on which said form is mounted, an actuator, connections from said actuator for first advancing said wipers and urging them under relatively light pressure against the upper along a line adjacent to the welted margin, then moving saidmember and the form thereon ,heightwise of the upper to cause the wipers .to register with the welt crease and, finally, to apply relatively heavy pressure to said wipers to overwipe the welted margin.

2'7. In a machine for .use in the manufacture of prewelt shoes, an inner form for supporting a prewelt upperoff the last, an end wiper and a plurality of side wipers constructed and arranged to operate within the welt crease; an actuator for said'end wiper, and an actuator con structed and arranged first to advance said side wipers and urge themunder relatively light presto :overwipe the entire toe 16' sure against the upper along a line adjacentto the welted margin, then to move said form heightwise of the upper to cause the wipers to register with the Welt crease, and finally, to apply relativelyheavy pressure to all of said wipers to overwipe the welted gmargin.

28. In a machine for use in the manufacture of,

prewelt shoes, an inner form for-supporting a prewelt upper by its welted margin, a toewiper, and a plurality of side wipers constructed and arranged to operate within the weltcrease, an" actuator for advancing said toe wiper and urg-- ing it under relatively light pressure against the toe portion of the upper alonga line adjacent to the welt crease a second actuator, connections from said actuator for first advancing the side Wipers and urging them under relatively light pressure against the upper along a line adjacent to the welt crease, then moving said inner form heightwise of the upper to cause the toe wiper and the side wipers to register with the welt crease, and finally, applying relatively heavy overwiping pressure to the toe Wipers and side wipers, means for holding said wipers in their respective overwiped positions, and means for releasing said holding means.

29. In a machine for use in the manufacture of prewelt shoes, an inner form for supporting a prewelt upper by its welted margin, a holder for said inner form, yielding means normallyoperating on said holder to maintain the inner form in an elevated position, a plurality of wipers constructed and arranged to operate within the welt crease, and an actuator for advancing said wipers and .then moving said holder down wardly to cause the wipers to register with the Welt crease f a prewelt wiper on said'inner form.

30. In a machine for use in the manufacture of prewelt shoes, a plurality of wipers constructed and arranged to operate within the welt crease of a prewelt upper, said wipers including a pair of relatively narrow shank wipers and a pair of side wipers constructed and arranged to operate on opposite side portions of the upper extending heelwardly from the shank wipers, both said pairs 7 of wipers having a fixed orientation, said side wipers being constructed and arranged to ex-" tend beyond the heel end of the upper to provide for their operation on a large run of sizes.

31. In a machine for use in the manufacture of prewelt shoes, a plurality of wipers constructed and arranged to operate within the welt crease of a prewelt upper, said wipers includinga pair of relatively narrow shank wipers and a pair of side wipers constructed and arranged to operate on opposite side portions of the upper extending heelwardly from the shank wipers, both said pairs of wipers having a fixed orientation, said'side wipers being constructed and arranged to extend in parallel relation to each other beyond the heel end of the upper to provide for their operation on a large run of sizes, and a common actuator for operating said wipers.

ERIC A. I-IOLMGREN.