US1413613A

US1413613A - Lasting machine

Info

Publication number: US1413613A
Application number: US146028A
Authority: US
Inventors: Charles F Pym
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1917-02-01
Filing date: 1917-02-01
Publication date: 1922-04-25
Anticipated expiration: 1939-04-25

Description

C. F. PYM.

LASTING MACHINE.

APPLICATION FILED FEB. 1 19!].

Patented Apr. 25, 1922.

9 SHEETS-SHEET I.

C. F. PYM. LASTING MACHINE. APPLICATION FILED FEB. 1. 1911.

1,41 3,6 1 3. Patented Apr. 25, 1922.

' 9 SHEETS-SHEET 2.

& 3 V W 174 'c. F. PYM.

LASTING MACHINE. I APPLICATION 'FIILED FEB. 1, 1917-. 1

- Patented A r, 25, 1922.

. v 9 SHEETS-SHEET 3.

C. F. PYM.

LASTING MACHINE.

APPLICATION FILED FEB. 1 1911.

1,41 3,61 3, Patented A r. 25, 1922.

9 SHEETS-:SHEET 4.

c. F. PYM.

LASTING MACHINE.

APPLICATION FILED FEB. 1, 1917.

Patented Apr. 25, 1922.

9 SHEETS-SHEET 5.

c. F. PYM. LASTING MACHINE.

APPLICATION FILED FEB. 1. 1917.

a H J; .5 E k Patented Apr. 25; 1922.

MA/5N 70/2 p I m v mu M3 i Q m m P I c. F. PYM. v

-LA'STING MACHINE.

APPLICATION FILED FEB. 1 I911.

Patented Apr. 25, 1922.

WWW l M Q Patented A r; 25, 1922.

C. F. PYM.

LASTING MACHINE.

APPLICATION FILED FEB.-I1I9H.

. \xiw i mE -several figures;

esta es states easiest errica/ CHARLES F. PYM, or nvnnyrvrassecnnsnr'rs, AssIeNoR, BY MEsnE Assrenlyrnivms, T0 UNITED srron MACHINERY CORPORATION, or PATERSON, NEW JERSEY, A con;

PORATION OF NEW JERSEY.

LASTI NG MACHINE.

Application filed February 1, 1917. Serial No. 146,028.

To all whom it may concern:

Be it known that I, CHARLES F. PYM, a subject of the King of Great Britain, residing in L nn, in the county of Essex and State of Mhssachusetts, have invented certain Improvements in Lasting Machines, of which th following description, in connec tion with the accompanying,drawings, is a specification, like reference characters on the drawings indicating like parts inthe This invention relates to. the shaping of shoe upper materials, .and in some of its im-. portant aspects to lasting machines of the type designed to operate upon shoeuppers to shape theuppers to the-ends of their lasts and to wipe them over the edges of, the soles'on the last bottoms, the term -sole; beingused herein for convenience to designate'the shoe part to which the upper 1s secured in lasting and thus embracing in its scope the --insole of certain types of shoes. In one aspect, an object of 'the'present invention is to provide a lasting machine wh ch will effect the lasting operation in an ex peditiousi and thoroughjma'nner without re,- quiring a high degree, ofskillonvthe part of theoperator and which is adapted for adjustment to accommodate the mechanisms to variousjshapes and sizes of lasts whose ends are to be operated upon,

A feature of the invention consists in a novel combination and arrangement of means for pulling or stretching the upper at one end of the last outwardly against the edges of end embracing wipers and for causing the wipers subsequently to draw the stretched upper against the end ofthe last and fold itover the edge of the sole on the last bottom without pressure of the wipers against the lateral periphery of the last;

Preferably, the outdrawn and, stretched upper is maintained under tension durlng the closing movement of the wipers or at least until the wipers advance over and press the upper down upon the edge of the sole.

This manner of shaping or forming the upper to the end of the last and over the edge of the sole on the lastis particularly advantageous for lasting the toes of turn shoes in that there is no upwlping pressure of the wipers against the lower edge of the sole within the upper, which sole, in

the inside out condition in which turn shoes are lasted, forms a ridge which may be encountered by the upwiping wipers to the damage of the shoe. The mechanism provided by the present invention vconiorms the upper to the end ofthe last by the outdraw of the upper and by the subsequent closing of the wipers approximately in the plane of the sole with the upper stretched and pref- Specification of Letters Patent. .Patefltgd Apr, 25, 1922. V

erably tensioned, so that the stretching and I conforming advantage of-the upwlpe is secured without its ob ectionablefeatures;

' The stretchingand conforming of the uppeiimaterials greatly facilitated -by".lat-- if erally outdrawing and 'foredrawingthe up per against and over the inner edges of the wipers'which are maintained substantially" in open position remote from the last dur':

ing this-operation. In accordance with a further feature of thein-vention 'a relative movement of the last and the wipers in a direct on transverseto the plane of the last bottom is effected hile the upper isheld outwardly away from thelateral periphery if v v of the last and in engagement with the edges of the wipers in order. further to stretch the 1 upper and to render the wipers effective;

with a substantialwiping action over a-por-. I

tion of the upper beforethework is dis- :posed in theproper relation to the wipers to permit the overwlping operation to be performed. The inner edges of the Wipers act "as ironing bars toeliminate the wrinkles and as tensioning bars to stretch the upper and coincidently to eliminate the-wrinkles and other inequalities during such relative movement of the last and wipers to .position the wipers and shoe sole in approximately the same operation. I

The elimination of the wrinkles and the stretching of the upper in this manner is of particular advantage in lasting toes. In

plane for the wlping over the case of turn shoes, the lining, Which-is on the outside during the lasting, directly engages the ironing out and stretching edge of the wlpers and is'more fully stretched leather. l/Vhen the toe is turned subset'urther stretched to enclose the lining. Ob-

and more tightly lasted than the upper v viously, with welt and McKay toes, the leather of the upper is on the outside and directly engages the wiper edges and receives the relatively greater stretching and per temporarily held 'on the last in proper position by tacks, usually inserted by a pulling over machine which secures the upper to the sole substantially at the tip seam and at'the extreme end of the toe. The end tack is removed in lasting the toe, but the tip seam tacks usually remain. In outdrawing the upper preparatory to wiping it over the end of the toe, as heretofore practised, the direction of outdrawing movement has often exerted such lateral strain upon the upper at the tip seam that the pulling over tacks and the upper have been loosened at this point, with the result that the upper subsequently shifts during the toe lasting operation with the obvious result of spoiling this operation.

feature of the present invention resides in a novel construction and arrangement of grippers and operating means designed to avoid. the above-mentioned consequences, the construction shown comprising grippers for engaging the edge of the upper at 'opposite sides substantially at the corners of the toe and means to swing the grippers laterally outward from the sides of the toe in curved paths effective to secureaoiagonally forward. outdr'aw on the upper at the corners of the toe with minimum outdraw,practically only foredraw,on the upper rearwardly of the corners, so that there is no substantial outward. pull on the upper at the tip seam such as'to loosen the securing tacksat this point. P

A further feature of the invention conists in a novel construction and arrange mentalfording provision for adjustment of the grippers, the illustrative enibodimient comprising grippers positioned above the wipers on the machine and arranged to grip the edge of the upper at the opposite sides of one end of the last, with means for bodily adjusting the grippers toward and from each other transversely of the last and with means for angularly adjustingthe grippers about axes substantially perpendicular to the last bottom. Preferably, the transverse and an ular adjustment of the opposed side grippers is independently effected, so that their positions may be varied for rights and lofts. gripper for the extreme end of the upper is employed in conjunction with the side grippers, this end gripper in the construction shown, as to adjustment, being stationary relatively to the side grippers.

Generally speaking, the curvature of the In the machine illustrated, also, :11,

this angular adjustment about the points of junction of the side and end curves of the toe.

A further feature of the invention consists in a novel construction and arrangement for determining. the proper position of the work in the machine, the construction shown comprising a gagemember arranged to engage the feather of the sole at the toe end of the shoe and positioned in such relation to the grippers and the wipers as to determine the initial position of'the shoe relatively to these parts when the shoe is presented. In the illustrative construction, moreover, this feather engaging member serves also to maintain the marginal edge of the sole in the correctrelation to the bottom of the last. 7 V

In presenting shoe uppers to lasting machines in wh'ch grippers or pincers grasp the upper material and stretchfit outwardly, it is not only desirable that the-shoe upper be initially positioned to co-operate with the grippers,-but it is also desirable. that the movable jaw of the grippers, in closing upon the upper, shall gather allof'the upper materials against the fixed jaw. A feature of this invention consists in a novel organization including wiper mechanism and lastv and shoe supporting and positioning means,

with upper gripping mechanism including a gripper jaw having an outreaching'component of movement which changes to aninward component toward the end of the gripping stroke so that the movable jaw reaches out and over the upper materials and then gathers them in towards and against the fixed jaw of the gripper.

In wiping the upper over the edge of the sole it is necessary to successful lasting that the edge of the upper be compacted down on the edge of the sole. The pressure which is necessary to accomplish this result is, of necessity, exerted in a direction which is substantially perpendicular to the plane of the last or solebottom and causes the wipers, in advancing over the sole, to exert a forward thrust against the last and sole in a lengthwise direction, tending to displace the last or sole, or both, lengthwise. A. feature of the present invention consists in a novel'organization comprising opposed'members relatively movable to clamp alast with its sole and shoe upper between them, with means tages of upwiping the upper without dan ger of displacing the edgeof the sole or of otherwise injuring the shoematerials, and in a further aspect having in view the pulling of the upper at the toe in such manner as to avoid displacing the upper materials at the rear of the corners of the toe.

The invention will now be more particularly described by reference to the accompanying drawings, which show a machine adapted to carry out the novel method and in which the novel features of the invention are embodied. a

In the drawing:

Fig. 1 is a view in-side elevation of the assembled machine, the parts being in the 7 position of rest prior tothe starting of the cycle of operations;

Fig. 2 is a front elevation on an enlarged scale of the upper part of the machine;

, Fig. 3 is a fragmentary plan view of the gripper adjusting and operating mechanism;

Fig. 4c is a planview, partly in section, ofv the wiper mechanism and its operating connections; I

Fig. 5 is a plan view, 0'n an enlarged scale, of the cam shaft, cams, and driving shaft;

Fig. 6 is an elevation, partly in section, of the jack,- holddown means;

Fig. 7 is a with their operating cams and connections;

Fig. 8 is a side elevation of the peripheral jack cam and its motion transmitting roll, the pincer closing cam groove in the opposite face of the cam disk and the connecting roll and lever being shown in dotted lines;

Fig. 9 is a side elevation of the holddown controlling peripheral cam with its operating lever and of the wiper operating cam groove in the face of the cam disk;

Fig. 10 is a side elevation of the sole-toe presser peripheral cam with its operating lever and of the pincer-swinging cam groove in the face of the cam disk;

Fig. 11 is a vertical section on an enlarged scale of a pincer mechanism; I

Fig. 12 is a fragmentary vertical section showing the holddown, jack, sole positioning finger, and grippers in their relative positions wlth the grippers closed and the last positioned with the sole above the wipers prior to depression of the last;

Fig. 13 is a view of the same parts with Her .18.

and sole positioning -The lower end perspectiveview of said parts about itslongitudinal axis.

the last depressed to' updraw the upper and to aline the sole and wipers, and with the grippers laterally outdrawn and vforedrawn to stretch the upper against and over the edges of the open wipers;

Fig. 14 is'aplot of the cams'for, control-,

ling the wipers, jack, holddown, grippers or pincers and sole control or gage finger, the cam paths beingrplotted.throughout a complete cycle of twenty periods of 18 each.

A hollow pedestal has its open 'cylindri calupper end longitudinally'split and-connected by suitable clampingbolts 4 (Fig. 1). The cylindrical neck 6 of a head 8 is verti cally adjustable in the upper endof the pedestal in setting up the machine by means of adjusting. screws 10 swiveled in'off-sets in the head and having threaded engage ment with bores in alined ears 12 offset from opposite sides of the ped'estal at its upper extremity. When the head 8 is adjusted to the desired elevation, it is clamped in .position by tightening'the bolts 4. The

head'8 is crowned by spaced frames 14 boltedto the top of the head and housingor supporting the mechanism of the machine between them. Y j

A jack cylinder 18 isguided for vertical movement by a guide sleeve 20 at'the fore ward end of" a bracket 22secured to the frontofthepedestal and is supported and variably positioned vertically byga lever 24 extending .rearwardly through-the. head 8 and journaled on "aspindle QG -supported from said head"8. Theiforw-ard endof this lever is bifurcated and .is 'notchedtogreceive pins :laterally outstanding ,from' I opposite sides of the square; upper end of the cylin- .upper end of the rod is formedlwith a longitudinal slot therein withv which the inner end of a pin 36 in the sleeve 32 cooperates to prevent the rod from. turning The upper end of cylinder is interis of'rod 30 carries a toe rest 38 suitably formed and preferably covered with leather of other suitable material to prevent injury to the toe of the shoe. Since the machine is capable of operating upon the heel ends of shoes, it will be obvious that a last pin may be substituted for the toe rest.

Within the jack cylinder 18 a coiled spring 40 is housed, its opposite ends abutting against the upper end of the screw plug 28 and a collar 42, fixed to the rod 30 atthe upper end of thecylinder. Thisjack of engagement'with the pulley by suitable springs (Fig. 5). Theclu't'ch disk48 has a sleeve portion keyed to the shaft with itsinner endabutting a block 50 mounted on the shaft and having an inner wedge face (Fig. 2). Aclutch-operatingbar52is suitably guided for vertical movement and is provided intermediate of its ends with a yoke portion 53'embracing and guiding onthe shaft and having a beveled face to engage the wedge face of block- 50.-- The slot of this yokev portion is elongated to permit-its beveled face to move vertically toward and from the beveledface of block 50. The upper end of the bar 52 isslotted and guides on a cam shaft pesitionedim mediately' above the drive shaft 4%. i

, The bar 52 is normally raised to place the high point .of itsbeve led yoke face above the block by means of a coiled-sprin 5 L sleeved on a treadle rod 56 between abracket secured to the head 8 and a washer abutting the base" of a hook at the extreme upper end of the rod, which hook engagesa pin. laterally offset from the lower end of bar 52. The "lower end of :the rod. extends freely through a bore in the rear end of a lever 58 and is threaded to receive an" adjustable abutment-nut engaged by said lever when moveddownwardly by depressionof a treadle 60connectedI-tothe forward end of said lever by'the bent link '62. The wedge block- 50 is prevented from turning on the shaftet t by a pin projecting from the yoke 53 and entering in a vertical slot in a tail piece depending from th wedge block. a p I Depression of the ,treadle causes downward movement of bar 52,-.bringing the high portion of the beveled face of itsyoke portion downwardly against the face of the wedge block and moving said block towart the pulley to force theclutch disk 48 into frictional clutching engagement with the pulley.

This clutching position] of the parts is maintained against" the tension of the clutch and treadlei-od springsfor a period predetermined by the location of notches in the peripheral edge of a stop disk-64a carried by and rotating with acam'shaft 66' journaled in the frame 14- above and substantially in vertical 'alinement' with the driving shaft eia-sis operating'position relatively to the wedge block50.

When the treadle- 60 is'operated the clutch is operated and since the cam shaft is driven through the drive shaft ht as later explained, the notch in the stop disk will be moved away from the roll and the higher peripheral edge of the disk will hold the roll and bar depressed into clutching position until the next notch inthe stop disk-comes opposite to the roll, whereuponthe spring 54 will move the bar upwardly out of clutching position and will'force its roll-into the notch of the stop disk, automatically halting the operation of the-machine.

The cam shaft 661s driven from the drive shaft l4; "through the following train of mechanism. On the I drive shaft within the frame 8 is mounted apinion 70 igLQ) meshing with a gear 72 (Figs. '1 and 5) mounted on-a counter shafti b journaled in brackets extending rearwardly and down.

wardly from the rear ends of the frames is.

This counter shaft carries a "second and smaller gear 76 spaced from the first gearlaterally ofthe frame and meshing with a gear 78 mQi/inted -upon the cam shaft 66. The cam 'shaftyat the side upon which the pulley 46. islocated is' extended outwardly from the frame 1& to "receive and -pc=sition the stop diskfia' withits peripheral edge alined with the roll 68 of the clutch ,operatin bar.

constructed antler-ranged to'ccntrol and operate the previously described last a'ck, and certain wiper, p. ;er., holddown and toe presser mechanisms later to be described. As shown, (:F i gs. 4;, 5 and 7 ,two

peripheral cam disks

80 and 82 are keyed on the cam shaft and preferably have their facescontacting, the disk 80 having an integral sleeve 84 to space said diskfroni thenext -ad acent cam disk, later to be described, so

as to permit the entry ofactuatingarms betweenthe spaceddisks for co-operation with cam grooves in vthe adjacent faces of the spaced disks.

Thecam disks

80, 82 are keyed-to the cam shaft in determinate

relationandhave cam grooves

86, 88, formed in theirrespective outer faces. Keyed to the cam shaft with its inner face abutting the sleeve 8 is a peripheral cam disk 90 having a cam groove iVithin and between the framcsllt, a series 7' or cams are keyed upon thc'shaft 66 and are- 92 formed in its inner face which isspaced from the adjacent face of cam disk 80 by the sleeve 84. The inner face of the gear 78 may, and as shown, does abut the outer face of the cam disk 90 which is keyed therewith to the cam shaft 66 with its cams in determinate relation to those of cam disks 80 and 82.- v 4 A web 141-(Fig. 4) connecting the side frames 14 is formed with a central bore lengthwise of the machine to receive the neck 94 of a wiper head 96, which is guided for reciprocation in said web and prevented from turning by a key 98. The neck 94 is formed with a bore 100 in itsrear end in which the reduced end 102 of a plunger rod 106 is inserted, said plunger .which is preferably square in cross section, having its end turned down for insertion in bore 100, thereby forming a shouldered portion 104 V which bears against the rear end of the neck 94 when the rod end is inserted and rigidly attached, as by a driven taper-pin 101.

The forward edge of therwiper head is channeled to form a substantially semi circular recess in which are seated wiper carrier plates 110 having. their rear edges curved to conformto the curvature of the recess and toothed to form gear segments 112. This recess provides upper and lower walls which confine the carrier plates against any vertical movement. Pivotally interconnected wiper plates 114 havlng their outer edges curved to conform to the general contour of *the toe (or heel) ends of shoes to be operated upon, are seated in recesses formed in the forward edges ofthe carrier plates for independent I relative movement automatically to adapt themselves to the contour of the shoe end when they are closed upon the same. They are retained withinthe carrier plates by pins on these plates entering slots extending rearwardly from the forward edges of the wiper plates and curved upon arcs concentric with the curved rear edges of the wiper plates. walls of the recesses in the carrier plates serve to confinethe wiper plates against vertical movement.

The recess in the wiper head 96 and the toothed rear edges of the carrier plates 110 are formed on curves concentric with the pivot 116 of the wiper plates, the carrier plates being guided in said wiper head for turning movement about the wiper pivot 116 a center by means of rolls 118 carried by the head and positioned in slots 120 in the carrier plates, which slots are; formed on arcs with the pivot 116 as a center,

The carrier plates with their supported wiper plates are designed to be turned through the bodily forwardand rearward movements of the wiper head 96. Accordingly, on opposite sides and at the rearend of the head, vertical gear spindles 122 are The upper and lower ournaled and carry in the plane of the car- I rier plates gears 124 meshing with the gear segments 112 on the rear edges of the car rier 'plates, and, in a plane above the gears 124, pinions 126 meshing with .theteeth of rack bars 128 extending lengthwise of the machine and having their forward ends guided in and projecting beyond the head 96 and. their rear ends projected through and beyond and-guidedinchannels in the I uprights of the frames 14. Preferably, the

forward end of the wiper head is formed 1 with open guide channels in which the for I ward ends of the rack bars 128 are seated,

and in which they are retainedby cover plates130 (Figs. 1 and 4), the rear ends of the bars being similarly retained in their guiding channels. in the uprights of; the frames 14. (Fig, 4). H, v- The rear ends of the rack bars which pro.- ject beyond the uprights .of the frames 14' p are rounded and threaded to receive tensioning nuts 132. Washers 136 are loosely seated over the threaded ends of the rack bars. and abut avainst the rear faces of the frame uprights. l3etween these washers and the tensioning nuts, coiled springs 134 areheld and normally tend tolmove the rack bars rearwardly, this rearward movement being limited by stop pins 138 carried by the bars and arranged to engage the front faces of the frame uprights, preventing rearward ';movement of; the rack bars beyond this point v r V j The plunger 106 has itsrear. end extendthe end of a supported last and shoe. The

springs 134 willhold the rack bars'stationary under normal conditions, so that as the v wiper head is moved forwardly toward the shoe, the pinions 126 carried by the wiper head willtravel over the rack bars, turning their spindles 122 and rotating their gears 124 to swingthe carrier plates 110 and the Iwiper plates 114 about the wiper pivot 116 p as a center, closing -the wiper plates, over the bottom of the last and the edge of the sole. 'As the wiper plates closeinto contact with the shoe upperat the end of the'last,

these plates .will automatically and independentlyadapt themselves? to the contour of different right and-left shapes of toes through their pin and slotmounting in the,

carrier plates. 7.

' Should unusual resistance be encountered as the head is projected forwardly, as, for

I to the closing movement of the wiper plates- 100 ingbetween'the spacedcam disks 80' and 90 by a plug 152 screwing end of the cup 146.

su-ally stiff upstanding upper material, the

springs 134 may yield, permitting the rack until the resistance to closing movement becomes less than the adjusted tension of the springs 13 1.

Upon retracting movement- 'of the wiper head, the reverse action takes place, the wipers being swung outwardly from over the bottom of the last and sole when the stop pins 138 abut against the frame bars and prevent rearward yielding movement of the rack bars 128.

The jack cylinder 18 with its last and shoe supporting rod 30, is raised and lowered in timed relation to the other mechanisms of the machine by contact of the peripheral cam 80 with a roll 140 carried at the rear end of the jack operating leverQe. The adjacent spaced peripheral cam .90 is constructed and arrangedto co-operate with and control a holddown member, between which and the support 38 the lastand shoe is clamped, the holddown engaging the face of the sole, holding it down upon the bottom of the last and at the same time clamping the last against the support 38 and in the positions for co-operation with the various instrumentalities aswill be later described. This holddown member is'inthe form of a foot 14-2 having prick points or teeth on its lower face and carried at the lower end of a stem l l i'guided for vertical movement and having its upper end reduced in diameter to extend through the threaded neck of acup shaped member 146 (Figs. 6 and 7), whose neck is seatedin a threaded bore in a trunnion block 148. The upper extremity of the stem l l lis provided with a head fitting within the cup 1 16 and normally pressed downwardly by means of a coiled spring 150, whose tension may be varied into the upper open The trunnion block 148 is provided with pins outstanding from opposite sides and 'journaling in slots formed in the outer bifurcated end 154- of an operating lever 156 having a sleeve intermediate its ends'journaling the lever on a spindle 158 supported between the frames let. The rear end of this lever is provided with a roller 160 held by a coiled. spring 1652 agfainstthe peripheral edge of the cam disk 90.

In wiping the edge of the upper over the accordingly, I have provided a sole oontrolling mechanism herein described and shown 'as a feather 'e'dge'toepresser foot 164 crescent shaped in cross section to correspond substantially with the lip of the sole at the extreme end of the toe and designed to engage against the outer face of the lip of the sole when the shoe is positioned in co -operative relation. This curved presser foot or sole control member is formed at'the lower end of astem 166 threading into a block 168, pivoted to the bifurcated forward end 170 of a controlling lever 172 which also has a sleeve intermediate its ends journaling on a spindle 17a supported by and between the frames 14 (Figs. 1, 2 and 7 The rear end of the controlling lever is laterally ofi set from its forward end (Fig. 7) and carries a roll 176 positioned to rest upon the peri pheral cam edge of the cam disk 82, mounted adjacent to the jack cam disk 80.

The pivoted block 168 to which the upper end of the toe presser foot is'secured, has a rearwardly extending and upwardly bent arm 180 to the rear and upper end of which is attached a rod 182 which extends downwardly and through an opening in a shelf 184 formed on the lever 172 adjacent to its bifurcated forward end. A coiled spring is sleeved upon the rod 182 and normally tends to maintain the arm 180 elevated, and the presser foot 164 depressed but permits the presser foot to yield backwardly to avoid realzage in case'it receives abnormal pres sure from theadvancing wipers.

iiccording to the present invention, it is proposed to conform the upper to the toe of the last by overwiping the upper while it is in a stretched and tensioned condition. In order to accomplish this result mostelfectively it is proposed to grip the upstanding edges of the upper and by relative movement of the last and upper gripping means to updraw, outcraw and foredraw the gripped edge of the upper to stretch and center the upper, and to position and hold the upper under stretching tension for thewipers while they are advancing to wipe the upper over on to the edge of the sole, thereby giving a very snug and close conformation of the upper materials to the last with all wrinkles and slack eliminated.

Accordingly, at a pointabove the wiper head, a rectilinear frame 186 (Fig; 3) is attached to the front uprights of the. frames 14 by means of laterally offset feet 188. Between its front and rear, the sides of the frame are connected by a web 190 having a central enlargement 192 formed with a guide channel therein open at its top to receive the carrier bar 1941 of an end pincer mechanismand closed by a cover plate 196.

The front bar of the frame at opposite sides of the holddown, previously referred to This stem is formed with a vertical groove into which extends the smooth end of a set screw 204 carried by the tubular guide to prevent axial turning movement of the hold down. v

The laterally extended heads of pivot. blocks 206 rest and guide on the top of the front frame bar at the front and rear sides of the guide slots 198, the blocks, below the bar, having rearwardly offsctzportions (Fig. 3) to the under side of which the forward ends of corner pincer supporting plates 208 are pivoted at 207. Thepivot blocks 206 and the corner pincersupports, carriers and pincer-s may be adjusted bodily transversely of the machine to accommodate the corner pincers to different widths of toes by thread ed spindles extending through the frame bars e from the outer ends of the slots with their smooth inner ends journaling in the frame bars at the inner ends of the slots 198 and with their threaded shanks passing through threaded bores in the pivot blocks; Stop collars 212 on these spindles at the outer ends of the slots and their adjusting heads 2142 at the ends of the frame bars prevent longitudinal movement of the spindles when turned, so that the pivot blocks may be adjusted longitudinally of the slots by manipulation of the knurled heads 21 1-. The corner pincers or grippers may therefore be separately and bodily adjusted towardand from each other" to provide for variance in the width of toes.

The supporting plates 208 for the corner pincers are inthe form of segments, the outer edges of which are toothed and which adjacent to their inner edges,- are formed with arcuate slots 216 having centers approximately coincident with the forwarder toe ends of the corner pincers. These plates 208 support corner pincer carrying arms 218 which extend transversely of the supporting plates 208 and which have lateral extensions 220 intermediate of their ends. Trolls 221 depending from the arms and their extensions enter in and are guided by the slots 216 to permit the arms to swing relatively to their supporting plates 208 to effect swinging adjustment of the corner pincers supported from the inner ends of the arms 220 about axes substantially perpendicular tothe plane of the lastbott'omv and approximately in alinement with the forward or toe ends of the pincer jaws. In'other words, the described construction permits independent angular adjustment of the corner pincers about vertical axes located at or near the ends of their jaws nearest the toe end of the shoe.

The outer ends of the arms 218 extend out beyond and overlie the toothed edges of the supporting plates are provided with spring pressed manually releasable dogs 222 engaging the toothed edges to latch the pin cer carrying arms 218 in independently adjusted position relatively to their supports ing platesl 208. Obviously such an adjustment is desirable to meet variance in the con- In the position of rest of the machine, the

end pincer supporting bar 194 with its pincer is positioned determinately and uniformly relatively'to the sole controlling foot 164: which serves as a positioning gage for the shoe and last.- This bar 194: ismoved forwardly away from the last by power during thecycle ofthe machine tooutdraw and foredraw theupper at the extreme end of the toe coincidently with updraw resulting from depression of the last and the corner pincer supporting plates 208 are coincidently swung outwardly from the opposite sides of the last on theirpivots 207.

This movementiseifected by a plunger 224E extending through a guide 225 upstanding from a bracket 226-secured-to a cross bar connecting the frames 14 near, their rear, the plunger forming a rigid forward extension of the end pincer supporting bar 19 1. Le-

' vers 228extending transversely of the frame 186 are pivotally connected intermediate of their ends to bracket plates 230 depending from the side bars of frame 186' at their inner sides. The; inner ends of the levers are pivoted to the under side of the supporting bar 194 by a pivot pin 232 and their outer ends are pivoted toabutment sleeves 234: mounted to slide on'rods 236-and normally pressed. against the headed adj'acentends ofsaid rods by coiled springs 238 sleeved on said rods. t

:These rods adjacent to-their opposite ends are threaded and said ends adjustably engage in and project through threaded bores in ears 2 10 bolted to and depending from the corner pincer supporting plates 208 at their outer forward ends; The forward ends of the springs 238 abut against tensioning nuts 242 on the threaded forward portion of the rods 286, which obviously may be adjusted to vary the tension of these springs.

Rear-ward movement of the plunger 22% will, therefore, move the end pincer support outwardly, and forwardly of the toe and through the levers 228 and their yielding connections to the corner pincer supporting 1 plates 208, swing these plates laterally outwardly from the opposite corners of the toe I on their pivots 207. These pivots 207' are located rear'wardl'y of those ends of the corner pincers nearest to the tip seam, as shown in Fig. 3; so that the upper is spread laterally and diagonally outward in a di rection forwardly ofthe toe with a compara tively small extent of movement at the ends of the pincers nearest the tip seam, so. that there is no substantial lateral outward pull against that portion of the upper at the tip seam whichis held to the sole by the pulling over tacks. The upperyat the tip seam is therefore not strained outwardly to such an extent as to pull these tacks: from the sole and to pull the upper from the sole as has been the case when the outdraw has been 7 applied as in prior constructions.

Rearward movement of other parts of the plunger 224 is efiected in timed relationto the cycle of operations by connections to the cam shaft 66. The rear end of the plunger which projects rearwardly beyond the guide upstanding from bracket 226, is enlarged to form'a block 244 (Fig. 3) from the opposite sides of which project pins 246 to which the bifurcated end of a rock arm 248 is pivotally connected (Figs. 1 and This rock arm is carried on and upstands from a rock shaft 250 journaled in the bracket 226 and having a depending crank arm 252 (Fig. 1) to the lower end of which is pivoted the forward end of an actuating bar 254 having its rear end formed as a yoke 255 embracing and guiding on a collar on the cam shaft 66 and having a laterally offset roll seating in the cam groove 88 in the outer face of the cam disk 82, the peripheral camface of which operates against the roll 176 and lever 172 to operate the sole controlling presser foot 164.

-The end and corner pincers are similar in J construction and each comprises a lower and V The gripping face of each lower jaw slopes.

- suitable stationary jaw 256 with its inner edge located immediately over the wipers and substantially alined with the inner edges of the wipers as the wipers stand in open position.

upwardly and outwardly and has at its outer end an upstanding shank portion 258 reduced in diameter at its upper end and extended up through and rigidly secured to.

the inner end of its

carrier arm

218 or 194 by means. Preferably, for convenience in assembling, the jaw portions are formed separately from the shank portions and are rigidly secured thereto by a plurality of machine screws or other suitable securing means.

The shanks 258 are formed with vertical bores extending upwardly through their rounded upper ends, and below said bores, are channeled vertically and downwardly to their lower ends forming elongated slots 260 within the lower ends of which the jaw portions 256 are seated and held.

Reciprocating plungers 262 are seated in these'vertical bores and extend downwardly into the slots 260, their lower ends having lateral offsets 268 projecting outwardly through the slots 260 and having their ends pivotally connected to the upper ends of the shank portions of movable pincer jaws 264. These j aws intermediate their ends are pivotally supported from the fixed jaws by links 266 of greater length than the offsets 268 and connected to the movable and fixed jaws at different distances from their lower extremities withthe pivot points on the fixed jaws substantially removed, rearwardly, from vertical alinement with the points of pivotal connection of the offsets 268 to the movable jaws 264. In raised position of the plungers the links 266 are inclined upwardly from the horizontal so that downward closing movement of the movable jaw will include successive components of ,outward'and inward movements. H

On downward movement of the plungers, the offsets 268 and links 266 will move the jaws 264 bodily downward and will coincidently swing the lower ends of these jaws pivots of the links 266 pass below theplane of horizontal alinement the lower ends of the movable jaws will be abruptly swung inwardly, the inward component of movement supplanting the outward component toward the end of the clamping movement so that the path of movement forms a hook-likeoutwardly until the pivots of each link are 7 horizontally alined,'and then as the outer Features of this pincer mechanism are claimed in a divisional application, Se-

rial No. 423,538, filed on Nov. 12, 1920.

The fixed jaws in the position of rest of the machine are located below the sole control foot with which the lip of the sole is engaged initially to position the shoe and are therefore positioned below the last bottom. When the last and shoe are manually presented to and pressed against thepositioning gage formed by the sole control foot 164, the upper and lining will usually enter between the fixed and movable jaws of the pincers by the mere presentation of the shoe to the gage.

vWhen the machine is started the pincers begin to close, the holddown and sole control foot moving downwardly and the last jack moving upwardly to clamp the last and sole between the toe support and the hold down with the edges of the lower pincer jaws slightly below the plane of the last bottom. The pincers are closed when the parts reach this position and are thereafter moved outwardly to outdraw, foredraw, and stretch the upper as the last and shoe are moved downwardly as will be more fully explained.

The closing of the pincers is effected through the rotation of a cam on the cam shaft 66. The upper. ends of the plunger-s 262 are pivotally connected by pins .270 to. the lower ends of links 272 whose upper ends are pivotally connected to the lower ends of rods 276 bypivot pins 274; extending at right angles to the lower pivot pins 270 so that substantially universal adjusting move ment of the pincers may be had.

Substantially spherical. bearing members 278 are yieldingly supported on the rods 2.76 by coiled springs sleeved on the rods 27.6 and having their lower ends abutting tensioning nuts 284i threaded on the rods 276, said springs having their upper ends abutting flanges 280 formed at the lower ends of the spherical bearing members 278. The upper ends of these members seat in sockets formed in the under face of a plate 286 which with the member-e278 provides ball and socket joints, the rods 27-6 above the tensioning nuts 284 being reduced in diameter and extending upwardly through vertical bores in the spherical bearing members and through the plate 286, the upper face, of which is coned out to permit play of the upper ends of these rods.

Washers 277 fixed by setv screws to the upper ends of these rods above the plate hold the rods against downward movement relatively to the plate 286 while the springs 282 permit relative yielding movement between the plate, when moved downwardly, and the pincer closing rods, so that the upper materials are gripped yieldingly by the pincers which will yield to prevent tearing oi the upper and injurious strain I upon the wipers. Obviously the tension of the springs 282, and the yielding point for the pincer jaws. may be varied through the tensioning nuts 284. y

The plate 286, whose downward movement effects the closing of the pincers is formed by a lateralextension at the forward end of the upper arm 288 of a bell crank lever having a sleeve portion intermediate of its ends journaled on a spindle 290 supported by the side frames 14, and

having its lower arm 292 extended downwardly between the spaced cam. disks and 9t) and provided with a roll entering the cam groove 86 in the inner face of the earn disk 80.

This roll is held against the outer wall of the cam groove by the coiled springl62 con.- nected to the holddown lever llidwhose roller 160 bears against the peripheral cam on disk 90 so that the'same spring holds theroll on lever 156 against the periphery of its cam 90 and holds the roll on arm 292 against the outer wall ofthe cam groove in the face of its cam disk 80. The roll 140 of the jack lever 24: is held againstits cam;

the ]&Ql cylinperiphery by the weight of der; the rollot the link 25% which effects outdraw of the pincer-s is held against the wall of its cam groove in cam disk 82 by the coiled springs 238 acting through levers 228, rod22el, etc; and'the roll. 176 on the rear end of the sole control lever 172 which held'against the "periphery of said disk by the spring 178 connected to arm 288 of the pincer closing bell crank lever, and serving to hold the roll onthe rear end of arm 292 of this bell-crank lever against the wall of its cam groove similarly ,bO'

spring 162. v

The

cam disks

80,, 82 and 90 which control and operate the'jaclcf, holddowmwipers,

pincers and sole control-are all keyed to the cam shaft 66' and their peripheral and groove cams are des gned,t o operate their respectivev mechanisms n timed relation.

in Figs. 8, 9: and 10 Ihave illliSll'ratfidthe various peripheral and groovecams with portions of their operating co'nn'eetions and in Fig. 14 the various cams are plotted sothat their relative timing will be'clearly apparent. This chart or cam plot is divided into 29 periods or sections, each section rep-' resenting movement of the cam through an arc of 1.8 degrees or one twentieth of a complete rotation of the cam shaft which constitutes in the present embodiment one cycle of the machine. It will be understood that the relative timing shown constitutes a preferable arrangement but that it is susceptible of variation and adaptation within the spirit" of the inventionv and withinthe scope of the appended claims.

,With the described construction in mind, and with reference to the cam chart shown in Fig. 14-, the sequence of operations and the action of the mechanisms is as follows, it being understood that in the position of rest, the sole control foot and hold down are substantially above the toe rest 38 011- the jack and also substantially. above the plane of the wipers, with the fixed jaws of the pincer-s substantially below'the hold down and sole control foot and above the plane of the wipers as suggested in 2; The controlling cam tor the sole control foot 16* as charted is figured for action with'thifs foot in substantial horizontal alinement with the hol-ddown in the position of rest ot the parts as seen in Figs. 6 and The shoe upper to be lasted by acmachine such as described usually comes to the operator with the upper assembled on the last and tacked at theheel end and with the sides and forepart pulledover thelast and temporarily tacked to the insole at the the seam and at the extremity ofthe'toe. This toe end. tack, it one has been inserted, s reintwed. by the operatorand the end of a wire '1 means. 65

ill@

with sharp edges. Preferably, the wire is drawn from a suitable spool 296 (Fig. 1) at the right side of the machine frame having suitable tensioning or braking means. The

'wire'will' be supported by said plate 294 rearwardly oi and slightly below the open ative edges of the wipers during the operation of the machine and at the proper time may be drawn around'the toe to press the upper against the lip or shoulder of the sole and anchored to a tip seam lasting tack at the right hand side of the inverted toe to hold the wiped-over edge of the upper in the angle between the feather of the sole and the face of the lip or shoulder.

When the wire has been anchored at one end and then drawn across the guide, the operator presents the toe of the inverted shoe and last to the sole control foot so that the outer face of the sole lip at the extreme tip of the toe is engaged with the face of the curved sole control foot at its lower edge, the shoe and last usually being inclined upwardly toward said foot. If necessary the corner pincers are adjusted, prior to presentation of the shoe, so that they will be positioned in line with the upstanding edge of the upper when the toe is presented to the sole control member.

The starting treadle is now operated and the cam shaft is revolved through the first twelve periods of the cycle and partly through the 13th period when the notch in the stop disk 64 alines with the roll 68 on the clutch operating bar 52 and causes the retraction of the clutch and the stopping of the machine in the middle of the lSth period of its cycle.

During the first three periods, the jack cam raises the jack and toe support, and the holddown and sole control cams simultaneously lower the holddown and sole control foot, the last, shoe upper and sole being clamped between the holddown and toe rest at the end of the third period, the holddown spring 150 being compressed and the trunnion block 148 engaging the shoulder of the holddown spindle so that the holddown exerts rigid clamping pressure on the sole and last,v depressing the last and placing the jack spring under tension. The holddown also levels the sole transversely and longitudinally into parallel relation to the wiper plane as established by the sole control toot.

During these movements and until the shoe is firmly clamped the operator maintains the lip of the sole against the sole control foot.

The act of presenting the shoe to the positioning gage formed the sole control Foot will ordinarily position the edges of the upper between the fiXed'and movable jaws of thepincers. l/Vhen this does not occur the edges may be inserted by pincers or similiar As the machine is started, the movable jaws move downwardly and outwardly and thence inwardly gathering the lining and upper and drawing it toward and clamping it against the fixed jaws of the pincers. The jaws will be fully closed before the end of the 3rd period beginning withwhich'time the pincer swinging cam becomes active, moving the end pincer straight rearwardly of the machine to foredraw and outdraw the upper and causing the corner pincers to move diagonally outwardly away from the toe end of the shoe, foredrawing and out drawing the upper against and over the edges of the wipers which remain stationary during this outdrawing movement.

From the 4th period to the end of the 7th the jack, holddown and sole control foot are lowering, causing the pincers to updraw the upper during the greater partof which time the pincer spreading cam is operating to foredraw and outdraw it in the directions previously described. During the first upward movement of the jack, as previously described, the .last and shoe are clamped between the jack and the holddown with the sole above the plane of the wipers and this subsequent depression of the jack, holddown and sole control foot relatively to the pincers and wipers not only effects updraw on the upper, but the downward movement of the vertically rigid sole control 't'oot locates the sole slightly below the plane of the wipers, Fig. 13, the sole control foot not only serving to press the edge or the sole at the extreme end down on the last but functioning as a positioning gage at this phase of the operation by placing the sole in the proper plane for overwiping movement of the wipers.

The upper is thus stretched upwardly and outwardly in a generally forward direction, the edges of the wiper plates acting as a rigid bar over which said upper is stretched and tautened by the coincident 'updraw, foredraw, and outdraw. This action is particularly advantageous in lasting the toes of turn shoes, since the inside-out condition of a turn shoe with its extension sole inside oi the upper makes it diflicult, it not impossible, to stretch and conform the upper to the last by upwipingd or relatively moving the last and wiper-s with the wipers in last conforming contact with the sides of the shoe below the last bottom. In such cases the edge of the turn shoe extension sole forms a ridge in the upper about the toe, pressure against which by the upwi ping Wipers will cause damage to the upper or to the edge of the sole, or to both. The present construction and operation stretches the upper and, as will be seen, wipesthe stretched upper while under tension upwardly and then down over the edge ofthe sole without engaging the wipers with said ridge about the toe of the upper, making the construction particularly advantageous for turn shoe work, since it has the stretching and conforming advantage of an upwipe without its objectionable features.

During the latter part of the lowering movement of the jack, holddown and sole control foot, (beginning with the 6th period) the wiper cam becomes active and gradually moves the wiper head forwardly, gradually closing the wipers and as the last lowers still further to the limit of downward movement, advancing them over the edge of the sole. The wipers will begin their advance over the edge of the sole during the first part of the 8th period, and coincidently, the sole control foot will be quickly raised out of the path of the wipers sul'iiciently far to clear them and will then be gradually raised to its original position, reaching this point at the end of the cycle.

"*The pincers reach the limit of their laterally outward movement approximately at the end of the 5th period and remain in such position for the 6th and substantially the 7th period, during which time the wipers are closing, drawing and conforming the stretched upper to thetoe of the last while tensioned by the pincers. The wipers reach the limit of their closing movement at the end of the 11th period, the pincers to a very slight extent during the 7th period and more markedly during the 8th and 9th periods, moving inwardly toward the last with the wipers.- Preferably, they are moved inwardly slightly beyond their origi nal positions to permit the wipers to force. the upper into the'angle between the sole lip and feather, this position of the pincers being reached in the 10th period and being maintained during the 11th period, after which the pincers move very slightly outwardly to original position.

Should the upstanding edges of the upper be unusually short, or should the tension on the upper as the wipers close in or at any other time, be too great, the springs 282 of the movable jaws may yield to permit the upper to be pulled partially from between the closed pincer jaws. Ordinarily, closing of'the wipers partially pulls the upper from the closed pincers. V

The pincers may safely move inwardly with the wipers ajf'terthe wipers begin to ad vance over the edge of the sole without causing slack in the upper since the wipers hold the upper down on the sole in stretched lastconiorming position as soon as they advance over the sole edge.

From the 8th to'the middle of the 11th period during which the wipers are moving to fully closed position, the jack is gradually lifted'to exert through its spring, progressively increasing pressure against the wipers serving to compact the wipedoveredges of the upper down'upon the sole. During this same period the holddown 1s gradually and proportionately raised by its cam to permit the pressure of the tensioned jack spring to be exerted against the wipers.

The movement of the holddown is effected thraugh bodily upward movement of its trunnion block so that at all times during this upward movement, the tension of the holddown spring is exerted against the sole and prevents longitudinal displacement of slightly retracts the wipers, the retracting movement reaching its limit inthe middle of the 13th period, at which time the notch (35 in the stop disk (it automatically arrests, movement of the cam shaft, with the wipers partially retracted but still advanced over the edge of the insole.

During this retracting movement of the wipers, the jack is slightly lowered by its cam, relieving the tension against the wipers to prevent drag on the wiped down edge oi he upper, a sharp rise in the-holddown. cam coincidently acting to depress the holddown a corresponding distance, which distance is suflicient to position the bottomot the sole very slightly below the face of the wipers to permit the'wire to be drawn through between the bottom oi? the wipers and the bottom of the sole. This is the condition of the parts when the machine automatically comes to rest.

This rest or pause in'the cycle permits the operator to draw inthe wire carried on the guide beneath the wiper head and to tighten- It about the toe by drawing it in between the lower face of the wipers and the undero lying sole and against the upperat the base of the sole lip at the toe, the endot' the wire being. held temporarily under tension by the workman until the final wipe.- This. rest or automatic pause may be eliminated',-

however, since the operator may time himself to draw the wire into place at this point in the machine cycle. w.

it the machine has been automatically stopped at this point, the "clutch treadle is now operated to restart it. The jack is now lifted coincidently with the hol'ddown, as in the first wiping over movement, to press the upper against the wipers which coincidently advance, this time to a. point slightly beyond the point or their first advance to force the wire tightlyagainst the shoulder formed at the base o f the sole lip This second wiping movement commences with the restarting of the machine in the middleof the 13th period, the wipers reaching the limit of their closing movement during-the 15th period and there}