US1695555A - Machine for operating on pieces of sheet material - Google Patents

Description

Dec. 18, 1928.

' B. F'. MAYO MACHINE FOR OPERATING ON PIECES OF SHEET MATERIAL Filed Oct. 28. 1920 6 Sheets-Sheet 1 .Zhopezifar a 5%;

Dec. 18, 1928. B. F. MAYO MACHINE FOR OPERATING 0N PIECES OF SHEET MATERIAL 'Filed Oct. 28. 1920 I1 I I 6 Sheets-Sheet 2 I k 1 w 5 Dec. 18, 1928.

B. F. MAYO mourns FOR OPERATING ON PIECES OF SHEET MATERIAL Filed Oct. 28. 1920 6 Sheets-Sheet 3 4 A W I 7 Dec 18, 1928.

. B; F. MAYO MACHINE FOR OPERATING 0N PiEGES OF SHEET MATERIAL .e Sheets-Sheet 4 Oct. 28. 1920 6 Sheets-Sheet F. MAYO Filed Oct. 25. 1920 run Dec 18,1928.

MACHINE FOR OPERATING ON PIECES OF SHEET MATERIAL B. F. MAYO- MACHINE FOR OPERATING ON PIECES OF SHEET MATERIAL Fiied Oct. 28- 1920 e Sheets-Sheet e F'W.IZ

Patented Dec. 1 8, 1928.

it i 1 95 UmTno v TES PATEE N r ()iP1- Fl"(3];. f

isnnmmivr. MAY-0, or sALEM MASSACHUSETTS, assreivonroionrrnn-snonna ennvnny oonroaamronor BATERSON, NEW'JERSEY, A coano'nairron or NEW JERSEY.

MAcHnvn roR or'nnn'rnvci on rIEons or snnn'r M TERIAL.

Appl ication' filed min ret, i920. Serial 1\To.,420,182.

' This "invention relates to. machines for operating on sections of sheet inateriatf The invention is particularly desi gned'to be embodied in machines for use in" assen1- 5 bling and'stitching together parts of a shoe upper. The assembling and stitching together of the parts of a shoe upper, in which 7 operation" the partsare first located in predetermined relative positions and then wh le held in such relations are guided in a predetermined path withrelation to'the sewing mechanism, in commercial work, have bee hand operations, have taken a great deal of care and have required the services of a skilled operator.

ary 14: 1919, is illustrated a machine in whichthe parts of a shoe upper are first located in predetermined relative positions on anassemhlingtable and are taken from the table by a movable carrier and presented to the sewing 1 mechanism; This machine,

while it greatlyreduces the labor and time previously required in the operation and enables the operation to be successfully performed by an unskilled operator, requires the constant attentionof the operator while in operation. 'j' i I i Certain in portant objects of the present invention are to improve the construction and mode of operation and to inc-reasethe output of machines for use. in sewing together the parts of shoe uppers and to render such machines to a great degree automatic so that very little time and attention are required'of the operator in operating the machines. i H

With this and other objects in view, the invention comprises the novel and improved features, constructions and combination of parts hereinafter. described and particularly pointed out in theclaims the advantages of which will; be readily understood and appreciatedby those skilled in the art.

signed to be embodied in machinesfor assembling andstltching together the parts of shoe uppers, certain features of the inven- In applicants pending application Serial No. 277,083, filed Febrir,

. Whilethe invention is particularly deoperations'on a single section of sheet material. it is to be un'derstood, therefore,

that except as defined in the claims the in ventlon is not limited to machine orclass of machines.

The invention will be readily 'iirlclerstood .5

from the accompanying drawings 'illustrat ing' the'lnvent on 1n .itsp'referred form and the following detaileddescription of the pendi'c'ular to the main driving shaft and looking toward the left, Fig.1 Fig. 3 is. a

detail dissemhled view inperspective of cer any particular l tain of the partsillustrated in Fig. 2; Fig. 4 v i is a det'ail view in horizontal section illustrating certain of the parts shown in Fig; 3;

Fig. is a detail sectional view takensuhstant ally on the line 55 of Fig. 2 6

is a view in front elevation of a portion ofthe machine; Fig. 7isa view ofia. portion of, the machine partly in rear elevation andpartly in section; Fig. 8 1s. a; detailplan view.,illustrating the supporting table the carrier and certain associated parts; Fig.1 9'- is a detail sectional view taken sulostantiallyv onthe line 9 9 ofFig. 8;Fig. 10 is a view partly in side elevation and partly infsection of certain of the parts shown in Fig. 8 looking toward the left; Fig.11 is a detailunderside plan View partly in section illustrating the carrier; and Fig. 12 is a'view'partly. in front elevation and partlyin. section illustrating certain devices associatedwiththe supporting table.

In the present machine two stacks of shoe upper parts to beassemloled and stitched together are placed on a supporting table in i I predetermined relative pos1t1ons,, each "stack .9 containing parts of the same kindorfcontour. After the stacks of partshave. been applied to the table the machine is started the parts are taken successively in sets, two parts at a time from the staclrs'by a move: able. carrier, areassembled in predetermined relative positions with. their margins only overlapping and are then presented to; the

sewing mechanism. After the sewing operation is complete d,theparts are discharged from the carrier and the carrier returns to position to receive another set of parts from the stacks on the table.

This cycle of operations is repeated until all of the parts are exhausted from the stacks and the machine is then stopped automatically.

The machine illustrated in the drawings is especially designed to be employed in stitching together a toe-cap or tip and a vamp. The machine has the same general construction and organization of parts as the machine illustrated and described in applicants pending application Serial No. 277,- 083. refered to above.

The sewing mechanism of the machine 11 lustrated in the drawing has the same construction as the sewing mechanism in the ma chine illustrated in the above application, and comprises one or more straight eyed needles 2, a presser-foot 4, and feeding devices (not shown) arranged to engage the parts of the work while it is being sewn. The machine is also provided with the usual work table 10. All of the operating parts of the sewing mechanism are actuated from a main shaft 12. The main shaft 12 is driven by means of a pulley 1 1 loosely mounted on the shaft and a belt 16 passing about the pulley 14 and about a grooved flange formed on a. pulley 18 secured to a driving shaft 20 mounted in hearings in the base of the machine. The shaft 20 is driven Irom a suitable power shaft by a belt 24 which is shown in Fig. 1 as passing about a loose pulley 25 mounted on the shaft.

To enable the main shaft 12 to be started and stopped at suitable times, a friction clutch is provided for connecting the pulley 14 with the shaft which is controlled through suitable connections from an arm 26 pivoted at 28 on the frame. Before the parts of an upper are presented to the sewmg mechanism, the arm .26 is swung rearwardly to engage the clutch and is latched in its rearward position by the engagement of a pivoted latch 30 with said arm; After the completion of the sewing operation, the latch 30 is lifted to release the arm 26, and the arm is then swung forwardly to cause the disengagement of the clutch by the action of a suitable spring.

As far as described. the present machine has the same construction arrangement and mode of operation of parts as the machine illustrated and described in applicants above application.

"The machine is provided with a work supporting table indicated as a whole at 32, upon which stacks of the respective shoe upper parts to be assembled and attached together are placed. The table comprises a forward or outer section 34 for the reception of a stack of vamps and an inner or rear section 36 for the reception of a stack of tips, each section being provided with a covering of felt or other suitable fabric as indicated at 38. The table is mounted for forward and rearward and lateral adjustment and also for adjustment angularly to adjust the position in which the parts of an upper are ap plied to the carrier. The carrier, when in position to receive the parts of an upper, is located above the table and the table is mounted for vertical movement to transfer the parts to the carrier. The table is carried by a forwardly and rearwardly movable slide 40, mounted on a support 42 fixed to the upper end of a shaft 44, and is adjusted by means of an adjusting screw 46. The shaft/l4 is mounted to slide vertically in bearings in a lateral movable slide 48 which is adjusted by means of an adjusting screw 50. The adjustment of the slide 40 adjusts the table forwardly and rearwardly relatively to the carrier. The support 42 is adjusted about the axis of the shaft 44 by means ofadjusting screws 52, threaded into spaced arms on the slide 48 and arranged to engage the opposite sides of a depending arm on the support as shown in Figs. 1 and 2. V

.The carrier when in position to receive a set of upper parts from the table occupies a predetermined position with relation to the table. In order that the upper parts may be located in predetermined relation to each other, and may occupy predetermined positions on the carrier when applied to the carrier, the stacks of upper parts are placed in predetermined positions on the supporting table. To enable the stacks of parts to be located in this manner on the table the table is provided with a pair of gage pins 54 for insertion in holes made at predetermined points in the vamps and with a second pair of gage pins 56 for insertion in holes made at predetermined points in the tips. The gage pins 54 and 56 are mounted in a cross bar 58 engaging in a groove in the table and having a depending pin 60 engaged in a boreinthe table. The pins 54 and 56 are slidable vertically in the cross bar 58 and are held frictionally in position by means of spring pressed plungers 62. The above manner of mounting the crossbar 58 enables the same to be removed from the table for the purpose of applying a series of vamps and tips respectively to the gage pins 54 and 56. When the Vamps and tips have been stacked upon the gage pins the cross bar may be replaced. in position on the table, the bar being located properly laterally of the table by the engagement of the pin 60 in thebore in the in a bearing in the frame.

carrier relative teythe table.

upper past the stitch formin g'vmechanism and for guiding; the same during-the stitchingof the parts together isindicatedas a whol'eiat 64. V The carrier comprises an Outer portion 66. for carrying a vamp and an inner-portion 68'f0r carrying a tip. spaced from the onterportionand connected therewith by means of bars 70 and 72.

The carrier is pivotally mounted at 74 upona supporting-arm or link TG-fiXed to the upper-rend of a shaft 78 mounted toturn guided during its swinging movement by means of a block 80 pivoted on the lower end of ahstud SQandengaging slot 8 1- ina plate 86 secured'to the'body. of the ear rier, The stud .82 thusforms a variable or shifting" fulcrum for the carrier, and: the

position of the carrier relative to saidful crumflis controlled by the supporting arm 76. Thestud 82 isinounted in asleeve- 88' threaded'into an overl'ianging arm 90 formed on the slide48; The pivot of't he support ing arm 76 is located between thestud and the Stll'ClX formingmechanism, and the axis of the stud and the/axis aboutwhich the supporting arms swings are preferably arranged so .that a horizontal line inter-- secting these axes will pass through the stitch forming mechanism. With this construction as the carrier isswung past the stitch forming mechanism, this mechanism will describe an approximately circular are on the pa'rtsof the uppe'rsupported on the carrier. The radiusflof this arc maybe ad'- usted. by adjusting the-shaft 78 "toward and a from the stud 82. The parts are constructed arranged so that thehorizonta'l line'intcrsecting the axis of the shaft Z8 andvthat of the stud .82 is substantially parallelwith the direction ot-movement 0T5 the-slide as. The stud 82 can be adjusted toward and from the shaft 78 by adjusting the slide 43 The carrier 64 isarranged to be swung into a position over thesupperting table 32 to receive a set of upper parts from the stacks on the tableras shown in 8, a suitable stop determining the position of the arranged that as the carrier is swung over the table, it is located somewhat above the topmost vamp and'tip ontliie stackson the table and the table is "then elevated to The; carrier is toswing toward the sewing mechanisnn the .v P?- vporting table the lower face of the portion '66 lies considerably, belowthe lower face of the portion68; Thus when the table descends the tip heldby the portion 68 willfbe located above the vamp held by the portion 66. As the carrier starts-to fS Wlng EOWEHCl the sewing "mechanism, thefpart'tihof the carrieri's inevedtoward thelpart 68-to place t-hegtorward margin of the vamp. and the rear. margin of the tip in overlapping rela-,

tions with the vamp beneath thetip; To

provide for this. relative movement0fthe two parts of the carrier, the part ddthereof is'mounted to slide longitudinally of the bars 70' and 72 and is acted upon by acoiled spring 92 which tends to maintain the same in aposition adjacent to part "68, the'move ment of the part66 under the influence ct the spring being limited by the -;engage1nentof a face-93011 the partx66 with a face 95 On the part 68; Q y 7 hen the carrier is swung intoreceiving positionover the table; the part 66 ismoved forwardly away from the part 68by the engagement of aroll 94 mounted on the part 66 ith the inclined forward 'iace cfan arm 96011 the slide 48., As the carr er starts part '66 iscarried toward the part -68 iby the action of the spring 92. In Order that the movementlof the part, 66 may bri the forward mar in of the vamp into contact or substantially 1nto contact with the rear margin of the tip; the bars 70 and 72 are inclined as shown in Fig. 10 so that the part I 661's moved upwardly as it; is carried toward the part 68.

y The supporting table is raisedand lowered in the manner describedflby the vertical movement ofthe shaft 44 in ts'bearings n the slide 48. To compensate for the decrease in the heights of the topmost vamp and tip with relation to the table, asthe parts are taken" s'i'lccessivcly from the stacks on the ta ble the table 15 OIVGH a ste n-bv-steou award a p y l movement. To lnsure theengagement of the topmost parts oneach-stack with the carrier during each; vertical movement of the table,

the table is given an upwardmovement some The parts are what in excess of that required to engage the parts with the carrier. The mechanism for moving theshatt vertically to raise and lower the table comprises a crank 98 formed on an intermittently rotating 'shatt 100, and

a, pit-man lOQcOnnecting the-cranh withea 1 block 104 having an epening'throug'h which the shaft 4% passes. Surrounding the shaft i hin the opening,- in the bleclr 104 are a pair cf friction shoes 106 which are held yieldingly in engagement with the shaft by i a coiled springlOS interposed between the cuter shoelandascrew 110*threaded into the 1 block. The screw 110 is adjusted so that the frictien'between thehheeslOS and the shaft, 4 11 is slightly. more than t. sufiicient to lift the shaft, as theHb-lock 10a is moved up,

wardly. During the first half revolution of the shaft 100 from the position shown in Fig. 2, theshaft 44 will be elevated until the topmost vamp and tip are engaged with the carrier, thus limiting the upward movement of the table and shaft 44. The-block 104 will then slide upwardly along the shaft 44 until the shaft 100 completes a half revolution. During the second half revolution of the shaft 100, the shaft 44 and the supporting table descend with the block 104. Before the shaft has completed av revolution, however, the downward movement of the shaft 44 is stopped with the table in a. position above its former initial position a distance substantially equal to the thickness of from the projection 142 thereby throwing the tip and vamp taken from the stacks.

The mechanism for thus arresting the downward movement of the shaft 44 comprises a clutch roll 112 mounted in an opening in a projection 114 on the slide 48 and engaging between a squared enlargement on the lower end of the shaft 44 and a wedged shaped block 116 secured in the projection 114. As the block 104 is elevated to lift the shaft 44 and thc'table, the clutch roll 112 is lifted by the engagement of a projection 118 on an arm 119 extending downward from said block with the roll. As the block 104 descends the roll 112 is engaged with the enlargement on the lower end of the shaft 44 and with the inclined face of the wedge 116 at a predetermined point in the downward movement of the block 104 thereby hit-k ng the shaft 44 from further downward movement, the block 104 continuing its downward movementindependently of said shaft. The shaft 44 is thus moved downwardly a uniform distance from its uppermost position during each cycle. The upperinost positions of theshaft and table increase in height during each succeeding cycle by a d stance equal to the thickness of the upper parts taken by the carrier during the preceding cycle so that a step-by-step upward'movement is imparted to the shaft.

The shaft 100 is driven by means of a pulley 120 loosely mounted on the shaft and continuously driven bymeans of a belt 122 from a pulley 124 mounted on the driving shaft 20. The pulley 120 is normally disconnected from the shaft 100 and the shaft is held stationary by suitable friction de vices. When the carrier, however, is swung into receiving position over the supporting table, the shaft 100 is clutched to the pulley 120 by means of a roll or Horton clutch and is driven from the pulley through a. single revolution to elevate and depress the supporting table. \Vhen the shaft has described asingle revolution the clutch is thrown out and the shaft again comes to rest. The

clutch for connecting the pulley 120 with the a shaft 100 is of well-known construction and comprises a dIlVlIlg member 126 carried by the pulley, a driven member 128 fixed to the shaft, a series of clutch rolls 130, a clutch controlling member 132 and a clutch engaging spring 134. The engagement and disengagement of the clutch is controlled by meansof a controlling l6V1"l36 pivoted at 138 on the slide 48 and provided with an abutment 140 arranged to engage a projecton 142 on the clutchcontrollmg member 132 to hold the clutch out of engagement. The controlling lever 136 is normally held in position to maintain the clutch out of action by means of a spring pressed plunger 144. i

The controlling lever 136 is swung to the right, Fig. 1, to disengage the abutment 140 the clutch into action by means of a tripping lever 146 pivoted at 148 on an arm on the support 42, the upper end of which lever is arranged to be engaged by the carrier 64 as shown clearly in Fig. 1. A dog 150 for engagement with the upper end of the controlling lever 136 is pivoted at 152 on the tripping lever and is normally held by gravity with its right hand end in position to engage the controlling lever, the downward movement of the right hand end of the dog being limited by a suitable stop on the tripping lever. As the carrier is swung into receiving position over the supporting table, the upper end of the tripping; lever is engaged by the carrier and the lever is actuated to swing the lower end thereof to the right. The controlling lever 136 is thus swung to the right to throw the roll clutch into operation.

When the supporting table is elevated the upward movement of the tripping lever 146' carries the dog 150 above the upward end of the controlling lever 136, allowing the latter lever to be swung back to its initial position by the spring pressed plunger 144 so that the roll clutch will be thrown out of operation when the shaft 100 has executed a single revolution. As the supporting table. is depressed, the right hand end of the dog 150 engages the upper end of the controlling lever and is swung upwardly. When the carrier 64 starts to swing toward the stitch forming mechanism, the tripping lever is restored to its initial position by a spring pressed plunger 154 and the right hand end of the dog 150 then drops down into active position.

In order to insure that the topmost tip and vamp will both be brought firmly into contact with the carrier by the upward movement of the supporting table, the vamp supporting section 34 of the table is arranged somewhat closer to the portion 66 of the carrier than the tip carrying section 36 of the table is to the portion 68 of the carrier and the section 34 is ieldinglymounted. The section 34 of the table is mounted upon by coiled springs 158', the upward-frnovement of the-section 34 relativel the Slidebeing limited by stop screws 160. p

deflected out of theirproper positions espeapplied thereto. This will caxuse the parts to be improperly located with relationto each other and to the carrier when applied to the carrier with "theresult that relative positionsfof theparts" whenrattached to-',

gether will. notbe correct and the seam will be improperly located. In order that the vamps and tips may be readily taken in succession from. the gage pins, it isde sirahlethat the gage pins :should project as little as possible above the topmost vamp and tip. The presentimachine is provided with a device which engages ithe upper ends of the gage pin'sas the' support,

ing table is elevated, locates thepins in their proper posltions wlth relatlonto the carrler before the vamp. and tip are engaged with the carrier and also acts to depress the gage pins relatively to the table to compensate for the diminution in the heightsot thestacks f of parts as the parts are taken from the tahle by thefearrier. Tliisdevice is indirated in the drawings at162 and consists ota plate provided with, a series of 'tapered'recesses 164 arranged to receive'the tapered Before the the carrier, the plate 162 occupies the position in Fig. 2. When the supporting table elevatedthe plate 162 is depressed into the positionshown in F ig.'10. During -this relative movement of the table and plate, the upper ends of the gagepins 54 and 56 are engaged in the recesses'ltil, are,lo rated in the proper positions. and are de pressed through the crossbar 58 to the -po- I sitions shown in Fig. 10 with relation tothe topmost vamp and tip, In order that the plate 162 may not interfereflwith the move ment of the carrier as the" carrier sw ngs tmvard the sewing mechanism; the plate is lifted out of the way-of the carrier to the position shown in Fig. 2% the supporting table descends. The plate issecured to'the lower end of a rod 166 mountedto slide verf i me l-1y in an arm on the slide 18, to the upperend oil which rod 1s p1votally connected onearin of a lever 168'pivoted at 17 0 on said slide. The other arnrofthe lever 168. is

ravetaily connected with the upper endjof a rod172 mounted for vertical movements in gnides in the'slide 18;. thelower end ofvvhich is arranged to be engaged. by 'anarin 17 1 on the block 104'. Through theiengagement of the arm 17 1 with the rod 17 2 as the block 10% is raised to elevatethesupportine table,

is depressed the plate 162 is lifted bvthe" action ofa coiled'spring 176. The topmost shoe 'upperjparts 'applieclfto the carrier' by r p 7 f the upwatl movementoi the tableare held The'gage pins 54 and '56 are liable to he,

on the carrier as thetable descends by the" action of-suetion mechanism. To enablethe eiallyswhen thestacks or vamps and tips are e upper parts engaged with the" lower 180 inthe'part 680i the carrier is formed in the stud '74 and communicates by means oft apassageway 186 inthe ar1n'76 With a' bore 188 in the shaft '7 8 "The shaft78 is' formed? surfaces otthe parts 66 'and'68of the car fee with a series of radial openingslQOle-ading from the central bore in the shafttoa shah low groove 192 in the peripheryof the shaft.

The groove 192e'ommunicates through a pas-2 sageway 194 in the frame with one end a flexible pipe 196 theother' end-of which is 7 connected with asuction tan 198 driven from the driv ng shaft 20. The bore 182 in the part 66 of the carriercommunicates with the groove 180 in the part 68 by 'lnealnsof a; passageway 200 in the part 66 of the'car rier, a bore 202 in the bar 72 and a pas sage a 204 inithe partGS. The bore 182 in the stud 74 is extended throughthe' uppen end of the studand communicates by means of anopeni'ng 208 in-the plate 86 withgail opening 210 in a block 212 secured to said I plate. The opening 210 isnorinally closed by means 'ofa'lever 214 pivoted at 216 in a slot inthe block 212.

nisin during the operation ofthe machine's;

the opening 210; The leveris normally held in position to close'the opening-21O by'a The lever 214 controls the suction mec'ha- YI coiled spring 220. As 'the carri e r. swings past the sewing mechanism the vtip-turned 7 end of the lever 214 engages with the arm. 9

26 just after the-oomp'letion of a. seamand the' lever is swung'into position to bring the opening 218 intoreglstration with the opening 210'therehyrelieving the suction by which the upper parts are held" on the carr er andallowing these parts to fall from" the-carrier. As the carrier swingsback into work receiving position, the lever 214: is

actuated by the spring 220 to close the open- I anismto operation. v I I --The carrier 64 is swing back and forth ing 210 and thereby restore the suction mecha successively from worlrreceivingposition:'

OVQF'lllG' supporting tahlepast the sewing mechanisnitowork discharging position and then'backto Work receiving position by auto-' the arm 26 is released by the latch 30 by shaft 240 is constantl maticall acting mechanism. The carrier is swung rom work receiving position over the supporting table past the sewing mechanism to work discharging position by means of a cable 222 secured at one end to the central portion or hub of the arm 7 6 and extendin therefrom over a pulley 224 and by a weig it 226 secured to the other end of the cable, This mechanism for swinging the carrier allows the movement of the work and carrier tobe controlled by the Work engaging feedmg devices during the sewmg operation. The carrier is swung 1n the opposite direction from work discharging poprojection 230 formed on a disk secured to a. shaft 232. A bevel ear 234 is mounted to turn loosely on the aft 232 and is con-.

nected by means of a bevel gear 236 with a bevel gear 238 secured to a shaft 240. The

rotated in the direction of the arrow, Big. 2, during the operation of the machine, and the gears 234 and 238 are thus driven in opposite directions. A clutch member 242 is keyed to the shaft 232 but is movable longitudinally of theshaft and is formed upon its upper and lower ends with clutch teeth respectively for engagement with clutch teeth on the gear 234 and with clutch teeth on the gear 236. The clutch member 242 is shifted longitudinally of the shaft 232 by means of a lever 244 pivoted at 246 on the frame and having a slot 248m which is engaged a pin 250 carried at the lower end of a rod 252. The rod 252 is mounted for longitudinal movement in an arm 254 secured to a rock shaft applied to the carrier the pin 250 is located in the forward or left hand end of the slot 248 as shown in Fig. 2 and the shaft 232 is clutched to the ear 238. The shaft 232 is thus drivenby tie gear in the direction of the arrow. The shaft 78 however is not driven by the shaft 232 in this direction but. its rotation is merely controlled by the engagement of the projection 228 with the projection 230. When the seam has been completed and the parts released from the carrier, the arm 254 is swung rearwardly as the engagement of the arm 26 with an arm 258 secured to the rock shaft 256. This movement of the arm 254 carries the pin 250 into the rear end of the slot 248 and the lever 244 is actuated to shift the clutch member 242 into engagement with the clutch teeth on the gear 234. The direction of rotation of the shaft 232 is thus reversed and The shifting of the pin to the forward end of the slot in this manner is produced by the movement of a bell'crank lever 260 pivoted at 262 andhaving a slot at the end of its vertical arm in which the pin 250 engages. The horizontal arm ofthe lever 260 is arranged to be engaged by a projection 264 on the pitman 102 and the bell .crank lever is thereby actuated to shift the pin 250 into the forward end of the slot 248.

The shaft 240 is driven from the shaft 20 through a friction clutch which comprises a driving clutch member 266 loosely mounted on the shaft 240 and a driven clutch member 268, fixed to rotate with the shaft 240 but movable longitudinally of the shaft into and out of engagement with the driving clutch member. The driving clutch member 266 is continuously driven from the shaft 20 through a worm 270 and worm wheel 272. The driven clutch member is normally held in engagement with the driving clutch menu ber by means of a coiled spring 274. The engagement of the driven clutch member with the driving clutch member is controlled by means of a bell crank lever 276 pivoted at 278, the horizontal arm of which is arranged to engage a flange 280 on the driven clutch member. The vertical arm of the bell crank lever 27 6 is arranged to be engaged by an inclined projection 282 on a vertically movable rod 284, the lower end of which is pivotally connected with a treadle lever 286 pivoted at288. When the treadle lever is depressed the projection 282 is disengaged .from the bell crank lever 276 and the driven clutch member 268 is held by the spring 274 in engagement with the driving clutch member 266 so that the shaft 240 is continuously rotated. WVhen the treadle lever is elevated the projection 282 is engaged with the vertical arm of the bell crank lever 276 and the bell crank lever is thus held in position to maintain the clutch member 268 out of engagement with the clutch member 266. When the machine is at rest the treadle lever. is elevated and the clutch members are held out of engagement. \Vith parts in this condition after a stack of Vamps and a stack of tips have been applied to the supporting table the treadle lever is depressed by the operator to start the machine. When the last vamp and tip are taken from the stacks on the supporting table, the treadle lever is lifted to engage the projection 282 with the bell crank lever and thereby disengage the sections of such material movable from work team . clutchunemberlQtiSfrom the clutch member 26 6. The enlargement on the lower end of the shaft44 isj 'formed with a slot 290111 Whiclr,engagcs a. pin 292 carrie'dby the treadle lever and, theflever s lifted at th s point in theoperation of the machine by the y the depression of the treadle lever 286;

that is claimed is: I I I. A machineioroperating on sectionsor" sheet material, having, in'combination, means for operating on such material, a carrier-for receivingposition to present the work to the operating means, movable to guide the work in its movement during the operation there on and: movable to restore the carrier to Work receiving position after the completion of an operation and automatically actuated and; controlled mechanism I for imparting a 7 complete cycle of movements to the carrier.

2. A machine for operating on sections of sheet material, having, in combination, means for operatingon such material, a'carrier for sections of such material movable from ork receiving position :topresent the Work to the operating means, movable to guide the Work in 'itsmo-vement during the operation there,

' on and movable to restore the carrier to Work able from Work receiving'position to present the WOIk to the operatingmeans and back ing a -complete cycleof movements to the receiving position after the completion of an operation andautomatically actuatedand controlled mechanism for impart ng repeated cycles of movementsto the carrier.:'

3. machine for; operating onsect-ions ot sheet material having, incoinbination, means for progressivel operating along such material, a carrier orholding sections of suchv material during the operationthereon movto Work receiving position after the coinpletion oi" an operatiomfandautomatically ac tuated and controlled mechanism for impart carrier.

4 A machine toroperatingon sections of sheet material, having in combination, means for operating on such materiah means for supporting'a group of sections of'sucl material' to be operated upon, and means opereach section during the progressive operthereonof the operatingmeans.

5. ii nachineifor operatin on sections of sheet. material, having, iii-com ination, means for operatiii from the supporting means and present the same to the operating flmeans arranged to; guide eachsec'tion with relation to the oper ating means as thejpoint of operation is transferred alongothe section; during the operation,

' 6. A machine for operating on'lsectio'ns of sheet material, havi-ng, in combination,

.means foi operating on such material,-means for supportinga group-of sect onsof such material to-be operatedupon and a movable. 7

carrier operating to take said sections inisuccession from the supporting means and pres sent the same to the; operating means arranged to'control each section during. the so ating means. 1

progressive operation thereon ofitheoper? 7. A machi efor operating on sections of means for operating on suchmaterial, a support for a group of SGCtIODS of such material, a movable carrier for talring fthe sections in successio r trom; the support and presenting the same to the operating means arranged; to control each section duringthe 5'0 progressive operation thereon of the operatsh eet material, having, in" combination; it

ing' meansand automatically actuated and],

controlled mechanisnr for causing the transfer'oi' tl e'sections from the support to-th'e I carrier and automatically actuated and controlled mechanism forfoperating' the carrier.

8. A machine for operating'on sections of sheet material, having, in combination,

means for operating on such material, means;

for suqoo rtin a 'rou of sections of-such l e 2: a

material to' 'he operated upon, mechanism for taking the sections {in succession from the i.

supporting meansvand: presenting the same to the operating'means arranged to control each section during the progressive operationthereon ofithe operating means and to dischargesa-id sections after the completion ofthe operation and automaticallyactuated" ceive the sections in succession fromthe stack 7 onthetable and movableto present the Work to the operating means, movable to guidethe v s v Workin its IDOVGIIlGIllZ during the operation ating to take said sections in succession from; the supporting means and present the same -to the operating means arranged to control n thereon and to discharge the WOIk after the I completion of an: operation, meansgacting tocause the transfer ofthe sections from the table to the ca'rrier,i;and mechanism for actuating the carrier.

1Q. A machine for operating onsections ofsheet material, having, in combinat on, a

7 ,9. A machine tor operating on-sectionszoi table for holdingstaclr of sections otjsuch 1 material, movable carrier arranged to re-'- ceive the sections insu'ccession' from the stack; o'n the I table vandjmovable to present' the Work to the operating means, movable to guide the work in] its movement during the operation thereon and to discharge the work after the completion of an operation and mechanism acting to relatively move the table and carrier to apply the topmost section in the stack to the carrier.

11. A machine for operating on sections of sheet material, having, in'combination, a table for holding astack of sections of such material, a movable carrier arranged to receive the sections in succession from the stack on the table and movable to present the work to'the operating means, to guide the work during the operation thereon and to discharge the work after the completion of an operation, suctionmechanism for holding the sections in position on the carrier, and-mechanism for actuating the carrier and controlling the suction mechanism.

12. A machine for operating on sections of sheet material having, in combination,

means for operating on such material, assembling means acting to relativelymove two sections of such material to position them with their margins overlapping, and

mechanism for actuating the assembling means to present the overlapping margins progressively to the operating means.

13. A machine for securing together two sections of sheet material, having, in combination, fastener inserting mechanism and a movable carrier arranged to assemble two sections of such material in predetermined relative positions with their margins only overlapping and present the overlapping margins of said sections to the fastener inserting mechanism.

14. A machine for securing together two sections of sheet material, having, in combination, fastener inserting mechanism, a support for sections to be assembled and se cured together and a movable carrier arranged to take two sections from said support, assemble the two sections in predetermined relative positions with their margins only overlapping and present the overlap ping margins of said sections to the fastener inserting mechanism.

15. A machine for securing together two sections of sheet material, having, in combination, fastener inserting mechanism, a work support, means for locating two sections of such material in predetermined rel ative non-overlappingpositionson said support, means for taking the two sections from i the support and assembling the same in predetermined relative positions with their margins only overlapping and presenting the overlapping margins'of said sections to the fastener inserting mechanism. y

16. A machine for securing together two sections of sheet material, having, in combination, fastener inserting mechanism, a

work support,-means for locating two $60- tions of such material in predetermined relative non-overlapping positions on the support and a movable'carrier arranged to take two sections from the support, assemble the same in predetermined relative positions with their margins only overlapping and present the overlapping margins of said positions with their margins only overlap ping and present the overlapping margins thereof to the fastener inserting meohanism.

1 8. A machine for operating on the parts of shoe uppers, having, in combination, operating means, a magazine, and means arranged to take the parts in succession from the magazine, carry the same in a predetermined path from the magazine past the operating means so that the operating means follows a line substantially parallel with an edge of each of the parts and to discharge the parts after the completion of an operation. 19. A machine for operating on the parts of shoe uppers, having, in combination, operating means, a magazine, means arranged to take the parts in succession from' the magazine, carry the same in a predetermined path past the operating means so that the operating means follows a line substan tially parallel with an edge of eachof the parts and to discharge the parts after the completion of an operation, and automatically actuated and controlled mechanism for actuating said taking and carrying means. 1

20. A machine 'for stitching together the parts of shoe uppers, having, in combination, sewing mechanism, a magazine, and means operating to take two parts from the magazine, to assemble the same in predetermined relative positions, to carrythe same in a predetermined path past the sewing mechanism so that a seam is formed on aline substantially parallel with an edge of each of the parts and to discharge the parts after the completion of the sewing opera- .tion.

21. A machine for stitching together the parts of shoe uppers, having, in combination, sewing mechanism, a magazine, means 1 operating to take two parts from the magazine, to assemble the same in predetermined relative positions,to carry the same in a preso that a seamis, formed on a line substantially parallelwithan edge of each oi the parts and to discharge the parts after the completion of the sewing operation, andautomatically actuated and eontrolledmeehanism for actuating said means.

22. A machine for sewing together the parts of shoe uppers, having, incombina-I tion', sewing mechanism, afniagazine, means operating to take the parts from the magazine, to assemble the. same in predetermined relative positions with their margins only overlapping, to carry the same 1n a predetermined path past the sewing mechanisnr so that a seam is" formed through the overlapping margins thereof on a line substan-.

tially parallel with an edge out one of the" parts and to discharge the parts after the completion oi the sewing operation.

23. A machine for sewing together parts of shoe uppers, having, in combination, sewing mechanism, a support for holding two parts of an' upper, a ,d means arranged to take the parts from said support, to assem-- ble the samein predeterminedrelative positions, and to carry the same past the sewing mechanism so that a seam will be formed zine, to assemble the same in proper overlapping relation, to carry the same in a predetermined path past the sewing mechanlsm so that a seam will be formed through the overlapping margins of the parts on a line parallel with an edge of one of said margins and to discharge the same after the completion of the sewing operation.

25. A machine for sewing together the parts of shoe uppers, having, in combination, sewing mechanism, means for supporting a vamp and a tip in predetermined relative positions, means arranged to take the vamp and tip from the supporting means, to assemble the same in proper overlapping relation,'and to carry the'same 1n aprede 'termined path past the sewing mechanism so that a seam will be formed through the overlapping 26. A machine for operating on sections of sheet material, havingfin combination,- means for operating on such material, a table for holding a stack of sections of such material, acarrier movable over the table and means for imparting a step-by-stepup' ward movement to the table in successive cycles of operations to apply-the topmost margins on a line substantially} 7 parallel with an edge ofone of said margina of. shoe uppers havlng, fling niechanism, magazinesfor holding the stacks of Vamps and toe'tips, a carrier pro section on the stack to the carrier in each cycle. I r

27. A machine for operating on sections of sheet material, having, in combination, means for operating on such materiaha reeiprocatory swinging carrierv for presenting sections of such material to the operating means, a shaft ior controlling the movement of the carrier, and automatically acting mechanism for rotating the shaft alternatelyin reverse directions.

28. A machine for operating. on sections of sheet material, havin in combination,

means for voperating on such material, av table for supporting a stack of sections ofsuch material, gage pins for insertion in gaging holes in the sections removably mounted on the table and meansfor taking the sections in succession from the stack and presenting the same to the operating means.

294A machine for operating on sections of sheet material having, in combination, 1 means for operatmg on such materlal, a ear-f rier provided with devices. for supporting a plurality of sections of such materlal, relatively moving them edgewise into overlapping relation and retaining them in such re means thereon. r

30. A machlne for sewing together parts of shoe uppers havlng, in combination, sewlng mechanism, meanstor supportlng two parts of an upper, and means arranged and.

operated to take the parts,'move them edge-- wise with relation to each otherinto overlapping relation, and retain them in thisrelation during theoperation thereonof the sewing mechanism. f

31. A'machine for sewing together parts lation during the operation of the operating of shoe uppers having, incombinationysewa .ing mechanism, means for supporting ,a

vamp and la'toe tip and a carrier provided with devices operating to take the vampand toe tip, assemble them in proper overlapping ar'elation andv retainthem in this relation during the operation of the sewing mechanism thereon. Y

32. A machineforlsewin'g together parts of shoe uppers having, in combination, sew

1ng mechanism, a carrier provided withdevlces for holding a-vamp. and a toe tip, relatively moving-them. edgewise into overlapping relation, and, retaining them inthis relation during the'operation of the sewing mechanism thereon.

33, A machine for sewing together parts n combination, sewa toe tip take and assemble from the magazines relatively 11io'vable to assemble said pieces, mechanlsm for actuating thecarrier to the vamp and toe'tip and to presentthem Y to the sewing mechanism while retaining them in assembled relation.

34. A machine for operating on sections of sheet material having, in combination,

6 means for operating on the material, a twopart carrier having each of its parts arranged to support a different section of such material, means for relatively moving the parts of the carrier to assemble the sections, and means for relatively moving the carrier and operating means to determine the line of travel of the operating means along the assembled sections.

BENJAMIN F. MAYO.

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