US2733460A - macdonald - Google Patents

macdonald Download PDF

Info

Publication number
US2733460A
US2733460A US2733460DA US2733460A US 2733460 A US2733460 A US 2733460A US 2733460D A US2733460D A US 2733460DA US 2733460 A US2733460 A US 2733460A
Authority
US
United States
Prior art keywords
shoe
toe
rest
wipers
heel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Publication date
Application granted granted Critical
Publication of US2733460A publication Critical patent/US2733460A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D23/00—Single parts for pulling-over or lasting machines
    • A43D23/04—Last-carriers; Shoe-guides

Definitions

  • This invention relates to ⁇ lastingmachines andisherein' ⁇ illustrated as embodied in a lastingmachine of the type disclosed in United- States Letters Patent No. 2,605,484, granted August 5, 1952, on an application'led in the name of the present applicant. It will be understood, however, that in their broader ⁇ aspects the several fea tures ofthislv invention are not limited to use in a lasting machine of that particular type or to embodiment in the lexact mechanical constructions herein disclosed.
  • A-n object ofl the invention is to pro# vide'certain improvements relating more particularly to machines for lasting the toe'endsof shoes in which the upper materials are Worked intolasted position around the toe end ⁇ of elast by means ofv toe-embracing wipers.
  • the shoe being lasted is usually supported during the operation of the wipers by means of aloe rest which is adapted to clamp the toe end of the shoet yieldingly against a shoe-bottom rest and isy held against heelward movement ⁇ by means of a heel rest which is adapted to be brought yieldingly into engagement with the upper materials at the heel end of the last and thereafter isV locked in position.
  • the means for supporting and operating theheel rest have usually included a pair of members extending outwardly from the machine directly below and in 'front of the toe-embracing wipers and symmetrically disposed with respect to the heel rest. Because of such location of these supporting membersit issornewhat ditlcult for the operator to place a shoe inthe machine prior to the lastingoperation, and, thereafter, to remove( it.
  • the means for supporting and operating theheel rest have usually included a pair of members extending outwardly from the machine directly below and in 'front of the toe-embracing wipers and symmetrically disposed with respect to the heel rest.
  • herein illustratedV machine is provided with a heel rest which is mounted for sliding movement towardand away from the heel end of a shoe on ⁇ a carrier which is supported in offset relationship to the Vpath of movementof the heel rest on one side of the shoe.
  • vthe heel rest is also utilized, in conjunction with another member whichV engages the toe ⁇ end of the shoe, for'so positioning thel heel end ofv the ⁇ shoe that the longitudinal, ⁇ median line of its forepa-rt is in the same vertical pllane as the center line ofv the machine which passes through the mid-portion of the' toe-embracing wipers.
  • the heel-rest carrier is mounted for pivotal movement so that it may be swung into one or theother of two extreme positions for receiving right or left shoes, respectively, and means are provided for readilyl vary ing the limits of such pivotal movements of the carrier in order to provide the desired angularity ofV the carrier', ineach df its right andileft-hand positions, to accommodateishoes on lasts of differentistyles.
  • the toe rest of the herein illustrated machine is initially m'oved into erig'ag'er'nerltl with the toe end' ⁇ of the shoe ,topress the bottom of the shoe yieldingly against ⁇ the shoeebottom rest, prior tov the advancing ot'the heelrest into' engagement with? the upper materials at the heel end of the last for positionf ing the toe end of. thef shoe relatively to the wipers,
  • each link is connected to'A one end of a lever which is. pivoted onf the wiper carrier andl interposed betweenk the other end ofv each of these levers arev two compressionsprings.
  • the arrangement is such that during,v theheightwise movementof the wipers the movement oi-V the' links are positively transmittedI to the wiper carrier by cooperating abutment surfaces onv the carrier and on the aforementioned levers; However, during the succeeding advancing and closing movements of they wipers the carrier, and hence thel wipers; may yield: upwardly against thev resistancel of two of the compression springs associatediwith the'two leverslso that the pressure of the v wipers on the' upper' materials" is limited by theseVr two springs.V The ⁇ other t'wo springs areso arranged thatthe'y are ineec'tfive during s'u'ch' heightwise' yielding of the wiper'carrier; Hewevergywhen tnerdverwipingeactinn has been.
  • FIG. 1 is a view in side elevation of a portion of a la st ing machine embodying'the features of this invention.
  • Fig. 2 ⁇ is a view in front elevation of a portion of the machinerillu'strated in Fig. l, shown at an enlarged scale and with certain parts shown in vertical section;
  • Fig. 3 is a plan view of that portion of the machine which'is illustrated in Fig. l;
  • Fig. 4 is a view in front elevation of certain parts of the ⁇ machine illustrated in Fig. l;
  • Figs. 5 and 6 are detailed Views in side elevation, and with certain'parts shown in vertical section, of a portion of the lasting machine illustrated in Fig. 1. f
  • this machine which has a frame indicated generally by the reference character 10, is provided with toe-embracing wipers 12, 12, associated with a wiper carrier 14 and adapted, during the operation of the machine, Vto be advanced and closed and also moved in directions extending heightwise and lengthwise of the shoe being lasted by mechanism, not herein shown, which is contained within the frame and is similar to that disclosed in applicants prior patent.
  • the herein illustrated machine has a shoe-bottom rest 16, a toe rest 18 and a heel rest 20, theseV parts corresponding, respectively, to the members 26, and 66 ofapplicants prior patent.
  • a U-shaped retarder 22 and an insole holddown 24, Fig. 5 are provided which correspond in structure and function to the members 28 and 422 of applicants prior patent.
  • the toe rest 18 is'secured to the upper end of a post 30 which is mounted forv vertical sliding movement in the frame 10.
  • This post is pinnedv'to a sleeve 31 which is slidably received in the upper end of av yoke member 32 and extends downwardly through this yoke member and through a second sleeve 34 mounted in the lower end of the yoke member.
  • the sleeve 34 which is provided at its upper end with a flange 36, is threaded into the yoke member and is held in place by means of a locky nut 38, Figs. 1 and 2.
  • a coil spring 40 surrounding the post 30 and interposed between the frame 10 and the upper end of the yoke member tends at all times to urge the yoke member, as well as the post 30 and toe rest 18, downwardly.
  • a compression spring V44 Surrounding the post 30 withinV the yoke member 32 and interposed between the flange 36 of the sleeve 34 and a thrust ilange 42 0n the sleeve 31 is a compression spring V44.
  • a lever 48 Connected .to the yoke by mean-s of a link 46 is a lever 48 which is pivotally mounted on a cross shaft 50.
  • This lever is adapted to be rocked in a counterclockwise direction, by means of a cam, not shown, Vwhich is associated with a cam shaft, 'not shown, but corresponding to the cam shaft 8 of the machine of applicants prior patent, during an initial Stage in the operating cycle of the machine.
  • V cam
  • the toe rest is moved upwardly into engagement with the toe end of a shoe S, herein illustrated as compri-smg upper materials U, assembled on a last L with an insole I, to press it yeldingly against the shoe-bottom rest 16 with a' force which is determined by the strength of the spring 44.
  • the action'of the spring 44 corresponds to the action of the spring 36 of the machine disclosed in applicants prior patent.
  • the toe rest is sub- Vtion with the chamber 66.
  • the toe rest is rigidly locked against downward movement in the following manner.
  • the lower end of the post 3 is slidably received in two bores 60, 62 formed in a housing 64 which is shaped to provide internal chambers 66 and 68.
  • a sleeve member 70 which opens at its lower end into the chamber 68 and is provided with lateral ports 72, 72 in communica-
  • the interior of the Isleeve member communicates with the chamber 68 through longitudinal bores 74, 74 formed in a valve seat member 76, threaded into the lower end of the sleeve member.
  • a hollow valve stern 80 which is provided with a conical valve head 82 and has a central bore 84. interposed between the bushing 78 and a washer 86, held in place on the upper end of the valve stem by means of nuts 88, 8S is a coil spring 90.
  • a rod 92 Slidably mounted in the bore 84, by means of enlarged portions adjacent to its upper and lower ends, is a rod 92 having an enlarged head 94 at its upper end and bearing at its lower end on a ball valve 96.
  • This ball valve is lo cated ina shouldered bore 98, formed in the valve head 82, and this shouldered bore is in communication with two bleed ports 100, which extend radially of the valve stem 80.
  • the ball valve 96 tits rather loosely within the bore 98 and a coil Vspring 102 is arranged to urge it yeldingly toward the valve seat provided by the shouldered upper end of this bore.
  • an arm 110 Pivotally mounted 'on the housing 64 is an arm 110 which carries an adjustable abutment screw 112 adapted to engage the enlarged head 94 of the rod 92. Passing through a clearance hole 114 in the end of this arm is an operating rod 116 on which there is adjustably mounted, by means of nuts 118, a thrust member 126 against which the upper side of the arm is yeldingly held by means of a coil spring 122, interposed between the arm and a thrust washer 124 held on the rod by means of nuts 126. As shown in Fig. 1, the rod 116 is connected to a lever 128 which is pivotally mounted on a cross shaft 130.
  • This lever carries a cam roll, not shown, which is associated with a cam on a shaft, not shown, but corresponding to the cam shaft 8 of the machine of applicants prior patent.
  • This cam is so shaped that at the beginning of the operating cycle of the machine the arm 116 is held in the position in which it is shown in Fig. 2. ⁇
  • the lever 48 is rocked in a counterclockwise direction, to elevate the post 30 and to move the toe rest 18 into engagement with the toe end of a shoe, the lower end of the post 30 slides upwardly in the bores 60, 62 in the housing 64.
  • the chambers 66, 68 of the housing 64 are iilled with a suitable liquid, such as oil, approximately to the level indicated in Fig.
  • the toe rest 18 is now rigidly locked against downward movement by means of the liquid which is trapped in the chamber 68 beneath the lower end of the post 30.
  • the downward thrustof the post 30 which is transmitted to the housing 64 is sustained by a boss 132, formed integral with the frame 1t), and into which a cylindrical extension 134 of the housing 64 is fitted.V
  • the lever 128 is rocked ifn'- a clockwise direction by'its" associated cant thus swing'- ing the arm 110- in a counterclockwis'e direction, Fig; 2.
  • the ball valve 96 is lirst moved awa-yv from its' seat by the rod 92 thus permitting liquid to flow through the bleed ports 100" andequalize' the pressure on both sides of the valve 82.
  • the valve 82 is moved away from its seat by the sternI 80' to the position shown in Fig. 2.
  • the lever 48A is rocked in a clockwise direction' by itsV associated cam to move the yoke member 32, post and toe rest 18 downwardly' to the positions shown in ⁇ Fig. 1, the post 3l) now sliding freely in the bores 60, 62 in the housing 64 ⁇ as the liquid in the housing is transferred from the chamber V68 to the chamber 66 through the bores 74, 74.
  • ⁇ The" heel rest 21? has a cylindrical stem 150 which is received within a bore 152, formed in a block 154, and is held in place on this block by means of a,r clamp plate 1'56 and screw 153, Fig. l;
  • alocking pin 168 which is adapted to be insertedV into one of several holes 170, formed in the guide 160, is provided.
  • the carriage 162'7 is adapted to be held in different adjusted positions along the slide 166 by means of one of two springpressed plungers 172, 172 ⁇ which are arranged to enter a selected hole, in one or the other of two'parallel series of holes 174, 176 formed in the slide 166, Fig. l.
  • the several holes in the series 174, 176 are offset by an amount equalv tohalf the distancey between holes so that a line adjustment of the location of the carriage 162 on the slide 166 may be obtained.
  • the slide 166 is slidably mounted, by means of guide# ways 19t), 19d on a carrier member 192;
  • Thisy carrier memberV is pivot'ally supported, by means of a pivot pin 194, on one end of a longer 196, 'the-pin' 19'4 passing through interlitted portions of the carrier member 192'and of the plunger 196, as shown in Fig. 4'.
  • Thi'slplunger is slidablytitted in a bore' 198 formed in' a bracket member Zlltl which is ⁇ secured to the fronty of' the machine frame' by means of screws 202,'one of which appears inFig'. 3 of the drawings.
  • Suitable keys 197', l97and keyways 199, 199 are provided to hold the plunger. ⁇ 196 against rotation in ⁇ the bore 198, Fig. il. Adjacent? to the hole 198, the bracket member is slotted at 2t'l4andV a binding screw 206 is ⁇ provided for clamping the. frame. against the plunger to hold the latter againstl slidingl movement in ⁇ the hole 198.
  • Formed integrally with the pin 1194 is an arm' 208v which isheld against rotation, relatively tothe plunger 19,6, by means of a key 219 formed. integrally with the plunger and ⁇ projecting into a cornplernentally"shapedl keyway 212 inthearm.
  • a link 216 the other end of which! is pivoted on an arm 218- by means of a pin: 220;. Fig; 3'.
  • This arm is mounted at one end'on a lixedpivot stud 222, associated with the bracket member 200 and'fhas connected toits opposite end, by means of a pin 224, one ⁇ end of a second link ⁇ 226.
  • the other end of. this link is'pivotall'y connected to lthe carrier member 192 by means of a pin 228.. Also connected to the carrierxmernb'er by? the' pin is pivotally connected to a Block 232', Fig. 4.
  • This bloeit is slidably mounted on a gnidewa'y' 2334, Fig.Y 3', formed in the bracket member 200, and is fitted between the Bracket member ⁇ and a rail 236 which isl secured at its opposite ends to the bracket member.
  • a hollow housing 240 ⁇ in which there is journaled a shaft 242', Fig.V 4.
  • a helical gearl 244 Secured to this'shaft, within the housing 240, is a helical gearl 244 which is in mesh with another helical gear 246 carried by a shaft12'48', also journaledin' the housing 240.
  • the opposite ends 250, 252 of the shaft 240 extend beyond the'housing and are provided', respectively, withl right and left-hand screw portions which are threaded through stop blocks 254, 256.
  • stop blocks are slidably mounted on a guideway 258", formed integrally onthe lower side of the bracket' member 200, Fig. -l.
  • a projection 260 Extending downwardly from the lower side of the block 232, Fig. ⁇ 4, is a projection 260 which is in line with the upper ends of the blocks 254, 256.
  • hand wheel 262 is provided for turning the shaft 242 to'elect displacement of the stop blocks, equally and in opposite directions, by means of the right andleft-hand threaded portions of the shafts 250, 252'.
  • the slide 166, carriage 162, block 154l and heel rest 20 are' mounted for rectilinear sliding movement on the' carrier member 192.
  • the carrier member When the carrier member is in' the position shown in Fig. 3, it is disposed at an angle to the longitudinal center Vline of the machine x-x which passes through the mid'portionv of the wipers 12, 12 and the direction of'movement of the heel rest is along a line y--y which is inclined at this same angle to the longitudinal center line ⁇ of the machine and is offset from the carrier so that' the line y-y intersects the center line x-x as indicated.
  • the stopl blocks 254, 256 are so disposed that, when the clamp screw' 206 is l'oos'erle'd and the carrier 'member 192 is swung around so a's to bring the projection 260 on the block 232 againstthe' other stop' block 256, the line yy" will be inclined: at the same' angle on the opposite side ofthe center line' x-'x and the heel res'lt" will be Y condition tor locate a right shoe onthe same style of last".
  • the slide 166 When the machine is idle, the slide 166 is in the position shown in Fig. 3 ofthe drawings and with the heel rest 20 separated a short distance from the heel end of a shoe placed in the machine, the position of the heel rest being variably determinedby adjustment of the carriage 162 relatively to the slide 166, in the-manner indicated above, to accommodate shoes of different sizes.
  • the slide 166, carriage 162, block 154 and heel rest 2i are moved along on the carrier member 192, to the left as viewed in Fig.
  • a rod 230 which corresponds in function and mode of operation to one of the rods 94 of the machine illustrated in applicants prior patent, referred to above.
  • Pivotally connected to the outer end V of this rod are a pair of links 282, 282, and connected to these links is one end of a second link 284, the opposite end of which is connected to the slide 166, Fig. 1.
  • 280, by means of links 286, are twoV bell-crank levers 288, Fig. 4, whichv are pivoted on an outstanding portion 290 of the bracket member 200, Fig. l.
  • levers are connected to an hydraulic locking cylinder 292 by means of links 294 and cooperating with this cylinder is 180 correspond, respectively, to the cylinder 292, piston 296, valve (not shown), valve stem 298 and valve spring (not shown) of the herein illustrated construction.
  • the rod 280 ismoved reversely, as is explained in applicants prior patent, to withdraw the heel rest from engagement with the shoe.
  • the toe rest is lowered to the position in which it is shown in Fig. 1 and, as the toe rest moves downwardly, the valve which controls the flow of fluid through the piston 296 is opened in the following manner.
  • a cam member 300 Also connected to the outer endY of the rod which is adapted to engage a roller 301 carried by an arm 302, Fig. 1.
  • This armV is secured to one end of a shaft 304 which is journaled in a portion of the bracket 200 and carries at its other end another and shorter arm 306. As is shown in Fig. 1, the end of the arm 306 is in engagement with the upper end of the valve stem 298.
  • the cam 300 moves away Vfrom the roller 301 Von the arm 302 and frees the valve in the piston 296 for movement to its closed position.
  • the cam 300 causes the arm 302, 306 to swing in a clockwise direction, Fig. 1, thereby depressing the valve stern 298 and opening the valve to release the rod for movement to the right.
  • the wiper carrier 14 is mounted for rectilinear movement in a generally horizontal planetoward and away from the toe end of a shoe in the machine, and also for movements in directions extending heightwise of the shoe by means including a pair of supporting links 320, 320, Figs. 1, 5 and 6.
  • Each of these links is associated with an operating lever 321 and these two operating levers are actuated in unison, by means of a cam on the cam shaft of the machine, not shown but corresponding in function to the cam 294 of the machine of applicants prior patent, to impart the aforementionedheightwise movements to the wiper carrier.
  • the links 216, 216 which correspond to the links 320, 320 of the herein illustrated machine, are connected directly to the wiper carrier so that the action of the operating cam is transmitted positively to the wiper carrier. Also, in the prior machine, after the wipers have been operated to Wipe the upper materials upwardly around the toe end of the shoe and then have been advanced and closed to wipe the lasting margin of the upper materials inwardly over the bottom of the toe end of the shoe, the wiper carrier is moved downwardly by the links 216, ,216 and the cam 294 to increase the pressure which is exerted by the wipers on the upper materials.
  • the shoe isl yieldingly supported against the downward force exerted by the wipers by means of a toe rest, which, as explained n the prior patent referred to above, is subjected to the action of one or both of two additional springs.
  • the shoe is rigidly supported by the toe rest 18 which, prior to the operation of the wipers, is locked in position by the hydraulic locking mechanism which has been described above.
  • each of the links 320 is connected, at its upper end, to one end of a lever 322 which is supported on a pivot pin 324 mounted in the wiper carrier.
  • Each of these levers is provided with an abutment surface 326 which is normally held in engagement with a complemental surface 328 on the carrier by means of a compression spring 330, interposed between the bottom of a recess 332, formed in the carrier, and an adjusting plug 334 threaded into the lever.
  • Adjacent to the springs 330 and located near the end of each lever 320 is a plunger 336 which is supported by a compression spring 338, seated on an adjusting plug 340.
  • abutment plug 342 In line with each of the plungers 336 and adjustably secured in the wiper carrier 14 is an abutment plug 342.
  • Applicants prior machine is, as explained'in the patent referred to above, intended for use in lasting the toe ends ⁇ of shoes in which the upper materials are secured to the insole in lasted po-sition by means of tacks driven through openings in the wipers.
  • the wipers 12, 12 ⁇ have been disclosed as provided with openings o through which the tacks are driven.
  • the tack-driving mechanism has been ⁇ entirely omitted since it forms no part of the present invention.
  • the stop blocks 254, 256 will iirst be adjusted. to provide the desired angularity of the carrier member 192 as determined by reference to theA indicia on therail 236 and the carrier will be swung to the position v shown in Fig. 3 and locked in this position by means of the clamping screw 206.
  • the operator will move the block 154 along the arcuate guideway 160 as desired to locate the heell rest properly for the heel height of -the shoe being lasted and' he ⁇ will similarly adjust the carriage 162 on theslide 166 for the particularA size of the shoe.
  • the heel rest will be withdrawn as shown in Fig. 3 and the toe rest will be t lowered tothe. position in which it is shown in Fig. l..
  • the wipers 12, 12 will be retracted, as'V shown in Fig. l, and the retarder 22, shown inFig. 54 but omitted from the disclosure of Figs. l and 3, will'be in its lowered and inclined position as shown in Fig. 5. of the drawings.
  • InV presenting the shoe to the machine, the,v operator turns back. the upper materials U at thetoe end of the s hoe Vand places theftoe end of thelast against the retarder, thus centering the toe end of the shoe relativelyl to the wipers 12,. 1.2. Next, he elevates the shoe until the bottom: of
  • the insole I. istinengagement withV the shoe-bottom rest 16 and, after swinging the heel end of the' shoe approximately into a position ⁇ to bring the medianline of the forepartV into the same vertical planel as the longitudinal center line x-x of the machine, he depresses thestarting treadle to initiate a cycle of operations of the machine; It will be observed, because of the manner inwhich. the
  • the toerest 118 is elevated by means including the lever 48, yoke 32 and spring 44, to press the bottom of the shoe against the shoe-bottom rest 1'6 and, shortly thereafter, the lever 128 is rocked in a counterclockwise direction thereby permitting the valve 82 to be closed to lock the toe rest rigidly in position.
  • the heel rest Before the toe rest is thus locked, however, the heel rest is advanced into engagementV with the heel end of the shoe and, as it contacts the shoe, it will swing the heel Vend of the shoe into a position in which the point b is on the line y-y thereby locating the'vforepart of the shoe in the desired position, relatively to the wipers 12, 12 and to the center line x-x of the machine.
  • the toe rest is heldin its elevated position only by the action of the spring 44 so that the shoe is free to pivot about its point of engagement with the retarder 22 under the action of the advancing heel rest.
  • the rod 280 is actuated by means of mechanism including a spring, not shown, so that the heel rest is yieldingly ⁇ advanced into engagement withv the heel end of the shoe. Moreover, inasmuch as the elevation of the toe rest 18 releases the valve of the hydraulic heel-rest locking device the heel rest is automatically locked in its advanced position.
  • the shoe is firmly held in position at the toe end by the shoe-bottom rest 16 and the locked toe rest 18 and at its heel end by the locked heel rest 20.
  • the wiper carrier 14' is supported substantially in the position shown in Fig. 5'V of the drawings so that, as the wipers 12, 12 are adT vanced andV closed in the manner explained in applicants prior patent, the pressure exerted by these wipers on the upper materialsis determined bythe two springs 330, 330.
  • the tacking mechkanism would'now be operated to drive tacks through the openings o in the wipers to secure the upper materials been completed, the operator would again depress the starting treadle to cause the operating cycle of the machine to be completed and the several operating elements to be returned to their initial positions as shown in Figs. l and 3 Vof the drawings.
  • the operator Before depressing the treadle asecond time, however, the operator would grasp the shoe and, as the toe rest and heel rest were returned to their original positions, he would remove the shoe thus released from the machine.
  • a suitable receptacle for receiving the shoe could be attached to the machine to receive the shoe which would fall directly thereinto as the toe rest and heel rest were returned to their original positions.
  • the wipers would be advanced and closed, then elevated and retracted, and nally again advanced and closed, and at the conclusionrof each advancing and closing movement the ⁇ wipers would'be forced downwardly against the upper materials.
  • the levers 322, 322 would be swung to the position shown in Fig. 6 of the drawings to subject the upper materials to the heavy fbedding down pressure provided by the action of the four springs 330, 330 and 33S, 338.
  • the wiper carrier would be free to rise, in response to pressure of the wipers on the upper materials, against the resistance of only the two springs 330, 330.
  • the carrier member 14 would be elevated by means of the links l320, 326 and the cooperating abutment surfaces 326, 328 on the levers 322.
  • a lasting-machine having toe-embracing wipers for wiping the upper materials of a shoe into lasted position around the toe end of a last, the combination of means for positioning the toe end of a last lengthwise and laterally relativelyto said wipers, a heel rest for engaging the-upper materials at the heel end of the last to hold the shoe against lengthwise movement during-the operation of said wipers, said heel rest being mounted for rectilinear sliding movement toward and away from the heel end of the shoe by means of a carrier member, means for pivotally supporting said carrier member in odset relationship to the path of movement of the heel rest Von one side only of the shoe, and stop members for limiting theV pivotal movement of the carrier, said stop members being so arranged that the path of movement of the heel rest, as it slides on the carrier, intersects the longitudinal center line of the machine at the same angle in each of the two extreme positions of the carrier member as determined by said stop members.
  • a lasting machine vhaving toe-embracing wipers for wiping the upper materials of a shoe into lasted position around the toe end of a last
  • said heel rest being mounted for rectilinear sliding movement toward and away from the heel end of theshoe by means of a carrierk member, and means for pivotally supporting said carrier member in offset relationship to the path of movement of the heel rest on one side only of the shoe. 5.
  • a lasting machine having toe-embracing wipers for wiping the upper materials of a shoe into lasted position around the toe end of a last
  • saidheel rest being mounted for .rectilinear sliding movement toward and away from the heel end of the shoe by means of a carrier member, means for pivotally supporting said carrier member inoiset relationship to the path of movement of the heel rest on one side only ofthe shoe, and manually adjustable stop members for variably limiting the pivotal movement of the carrier, said stop members being so arranged that the path of movement of the heel rest, as it slides on Vthe carrier member, intersects the longitudinal center line of the machine at the same angle in each of the two extreme positions of the carrier member as determined by said stop members.
  • said heel rest being supported for heightwise and' lengthwise adjustment on aslid'e member ⁇ which is mounted 'for rectilinear movement to carry the heelrest toward and away from Vthe heelend of the shoe by means of va carrier member, and means for pivotally supporting said carrier member in odset relationship'to the path of movement of the heel rest on one side only ofthe shoe.
  • said heel rest being supported Yforheightwise and llengthwise adjustment on a slid'e member which is mounted for rectilinear movement to" carry the heelhr rest toward and away from the heel end of the shoe by means of acarrier mem'- ber, means 'for pivotally supporting saidcarrier' member in offset relationship Vto the patltof movementof the heel rest; on one side only'r ofthe shoe, and stop members for limiting ⁇ the pivotal movement, of the carrier member, said' stop members being so arranged that the path of movement of the heel rest*,-as i ⁇ t slideson the carrier member, ,intersects the longitudinal ⁇ center line of the machine at the same angle in each of ⁇ the two eXtreme positions ⁇ of the carrier member asdetermined by ⁇ said stop members.
  • said heel rest being supported Vfor heightwise and lengthwise adjustment on a slide member which is mounted for rectilinear movement to carry the heel rest toward and away from the heel end of the shoe by means of a carrier member, means for pivotally supportingsaid carrier member in oiiset relationship to the path of movement of the heel rest on one side only of the shoe, and stop members for limiting the pivotal movement of the carrier member, said stop members being so arranged that the path of movement of the heel rest, as it slides on the carrier member, intersects thelongitudinal center line of the machine at the same angle in each of the two extreme positions of the carrier member as determined by said stop members.
  • valve includ-ing amain valve and' a bleed valve for controlling the ilow ofl iluid' to" and from' said"y cylinder, spring means for. holding said valves in closed position to trap fluid in 'said cylinder, during the operation of'said wipers, thereby' to lock said piston against movement and to hold ⁇ the toe rest in positi'on to support the shoe rigidly, t
  • a piston connected to the toe rest, a cylinder in which said' piston is tted, a compound' valve including a mainvalve and a bleed valve for controlling the tiw of"iluid' to and from the cylinder, spring means for holdingl said valves in closedposition's to trap fluid in. said cylinder, during; the operation of said wipers,
  • a yieldable connection A for effecting movement off-the toe rest 'initially intoclamping engagement with theA toe end of( the shoe, a piston connected to the toe rest, a cylinder in which said piston is fitted, a compound valve including a main valve and al bleed valvefor controlling the flow of uidto and vfrom the cylinder,l spring means for holding, said'valves ⁇ in closed ,positions ⁇ - to trap Huid' in saidl cylinder, during.
  • a relatively fixed shoe-bottom rest for engaging lthe bottom of the shoe
  • a movable toe rest for clamping the toe end of a shoe against said shoe-bottom rest and adapted to support the shoe against heightwise movement in one direction during the operation of the wipers
  • means including a springfor Veifecting movement of the toe rest initially into clamping engagement with the toe end of the shoe, a piston connected to the toe rest, a cylinder in which said piston is fitted, a compound valve including a main valve and a bleed valve for controlling the ow of iluid to and from said cylinder, spring means for holding said valves in closed positions to trap fluid in said cylinder, during the operation of said wipers, thereby to lock said piston against movement and to hold the toe rest in position to support the
  • a lasting machine having toe-embracing wipers Y for wiping the upper materials of a shoe upwardly around the toe end of a last and inwardly into lasted position over the toe end of an insole on the last
  • said means including a pair of supporting and pperating links and connections between said links and the carrier so'fconstructed and arranged that movement ofthe carrier by the links is eiected positively in one direction, during operation of the wipers to wipe the upper materials upwardly around the toe end of the last, and yieldingly in the opposite direction to cause the wipers to apply pressur'eto the upper materials after the wipers have been operated to wipe the upper materials Y inwardly over the insole of the shoe.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Description

Feb.; 7. 1956 sm MACDONALD 2,733,460
LASTING MACHINES Filed Feb. 4, 1955 3 Sheets-Sheet l.
' j Y ,905/56, V70 1 Q 20259 1 M4 /66` I 9 r /55 ze .25292 /;95-\\ .ff if l///M Lesef S Macdonald ABy his Attorney Inventor Feb. 7, 1956 l.. s. MACDONALD LASTING MACHINES 3 Sheets-Sheet 2 Filed Feb. 4, 1953 Inventor f .Lester Macdonald l' By his Attorney x .Il 7A' ifg"`nf 4 EE', a ggg/4l QU M Feb. 7, 1956 L. s. MACDONALD 2,733,460
` LASTING MACHINES Filed Feb. 4, 1953 s sheets-sheet s goo 294 4 /4 13', Inventor" 332 334 Lasher' S Macdonald MQW y 2,733,466- LASTING MACHINES Lester SQ, Maedonald, 'everly', Mass., assigner to United 2,7 33,460 iaienied Feb. 7, 1956 ICC g toe-embracing wipers,Y and more particularly during their Shoe Machinery Corporation, Flemington, N. 1., a for# v poi'atuurof New Jersey Application February 4, 1915-3, Serial No. 335,079 zo claims; (er. 12x80) This invention relates to` lastingmachines andisherein'` illustrated as embodied in a lastingmachine of the type disclosed in United- States Letters Patent No. 2,605,484, granted August 5, 1952, on an application'led in the name of the present applicant. It will be understood, however, that in their broader `aspects the several fea tures ofthislv invention are not limited to use in a lasting machine of that particular type or to embodiment in the lexact mechanical constructions herein disclosed.
A-n object ofl the invention, among others, is to pro# vide'certain improvements relating more particularly to machines for lasting the toe'endsof shoes in which the upper materials are Worked intolasted position around the toe end` of elast by means ofv toe-embracing wipers. in machines of this type, as illustrated by theaabove-Y mentioned patent, the shoe being lasted is usually supported during the operation of the wipers by means of aloe rest which is adapted to clamp the toe end of the shoet yieldingly against a shoe-bottom rest and isy held against heelward movement `by means of a heel rest which is adapted to be brought yieldingly into engagement with the upper materials at the heel end of the last and thereafter isV locked in position. In such prior arrangements, the means for supporting and operating theheel rest have usually included a pair of members extending outwardly from the machine directly below and in 'front of the toe-embracing wipers and symmetrically disposed with respect to the heel rest. Because of such location of these supporting membersit issornewhat ditlcult for the operator to place a shoe inthe machine prior to the lastingoperation, and, thereafter, to remove( it. For the purposes of this invention, the
herein illustratedV machine is provided with a heel rest which is mounted for sliding movement towardand away from the heel end of a shoe on` a carrier which is supported in offset relationship to the Vpath of movementof the heel rest on one side of the shoe. Hence, with one side of the shoe entirely exposed and the heel-rest supporting carrier located entirely on `one side of the shoe, there is nothing to interfere with the operator-s hands as he presents `the shoe to, or removes it from, the machine. Preferably, vthe heel rest is also utilized, in conjunction with another member whichV engages the toe `end of the shoe, for'so positioning thel heel end ofv the` shoe that the longitudinal,` median line of its forepa-rt is in the same vertical pllane as the center line ofv the machine which passes through the mid-portion of the' toe-embracing wipers. Thusin the hereinv illustratedmachine, the heel-rest carrier is mounted for pivotal movement so that it may be swung into one or theother of two extreme positions for receiving right or left shoes, respectively, and means are provided for readilyl vary ing the limits of such pivotal movements of the carrier in order to provide the desired angularity ofV the carrier', ineach df its right andileft-hand positions, to accommodateishoes on lasts of differentistyles.
p With the view of providing a more positivefsupport'for `the toe end of the shoe, during the operation of the f ricrs;
action to wipe the lasting margin inwardly over the' toe end of the shoe, asdistinguished, for example', from the yielding arrangement hitherto providedin the machine of applicants prior patent;- the toe rest of the herein illustrated machine is initially m'oved into erig'ag'er'nerltl with the toe end'` of the shoe ,topress the bottom of the shoe yieldingly against` the shoeebottom rest, prior tov the advancing ot'the heelrest into' engagement with? the upper materials at the heel end of the last for positionf ing the toe end of. thef shoe relatively to the wipers,
t and thereafter thetoeI restl is positively locked against reverse movement in,y order to hold; the toe end of the shoe rigidly in position.A Thus, the means for moving the toe rest initially'toits= operating position includes a yieldable connection, such` as aspring, andv fluidl' operated means including a piston, cylinder andsuitable valves, are provided for thereafter locking the toel restT in positiony to support theY sh'oe rigidly during the operation of the wipers;-
As is the case in themachine' of `my prior patent, the toe-embracing wipers a-re mounted for movements in" directions extending heightwise of the shoe for` wiping the upper materials around the toe' endV of the last and` also for pressing the lasting margin ofthe upper mate--v rialsv againstl kthe last,- after these uppermaterials have' been wiped inwardly over the toeend of an insole on the last by advancingtand closing movements ofthe" wipers in directionsy extending lengthwise and Widthwise of the last. During such advancing andclosing I no've ments ot the wipers, the toey end'Y of the" shoe being atthis time rigidly supported in themannerjust explained, itis desirable that the" pressure of the wipers on' the upper materials belimited tol a value which is not ex-V cessive, regardless off the thickness of the upper materials or the abrupt-ness of the conv'exvcurvatur'e of the toe end of the last. Accordingly, in the machine of this inven-4 tion, means are providedfor permittin'gl the wipers' to yield, in directions extending heightwise of the last,` dur-V ing their overwiping action. Morev particularly,` the i wipers` are mounted in a wiper carrier whichV issupporfe'd for movements in directions extending he'ightwise and lengthwise of the last by mechanism' including a pair of links and, in accordance with this invention, novel means are provided for connecting` these links to th'e wiper car- Thus, each link is connected to'A one end of a lever which is. pivoted onf the wiper carrier andl interposed betweenk the other end ofv each of these levers arev two compressionsprings. The arrangement is such that during,v theheightwise movementof the wipers the movement oi-V the' links are positively transmittedI to the wiper carrier by cooperating abutment surfaces onv the carrier and on the aforementioned levers; However, during the succeeding advancing and closing movements of they wipers the carrier, and hence thel wipers; may yield: upwardly against thev resistancel of two of the compression springs associatediwith the'two leverslso that the pressure of the v wipers on the' upper' materials" is limited by theseVr two springs.V The `other t'wo springs areso arranged thatthe'y are ineec'tfive during s'u'ch' heightwise' yielding of the wiper'carrier; Hewevergywhen tnerdverwipingeactinn has been. compared and the' arereinanimati links are operated" to m'ove tlie wiper' carrier inf a direction`r Atopre'ss the wipers more firmly against" the lupper materials, these fwd springs' become' attentive, together with the other nist-mentioned two springs, so that the desired beddingdown` pressure is obt'inedl` `As willV be apparent,` this beddingdown,pressure is limited-'hy thestrength of the four springsand thus`- kept within a safe value.
v 'lhe above and other objectsfand-feat-ures of thisinvention will appear in the following detailed description of Fig. 1 is a view in side elevation of a portion of a la st ing machine embodying'the features of this invention;-
Fig. 2`is a view in front elevation of a portion of the machinerillu'strated in Fig. l, shown at an enlarged scale and with certain parts shown in vertical section;
Fig. 3 is a plan view of that portion of the machine which'is illustrated in Fig. l;
Fig. 4 is a view in front elevation of certain parts of the` machine illustrated in Fig. l; and
Figs. 5 and 6 are detailed Views in side elevation, and with certain'parts shown in vertical section, of a portion of the lasting machine illustrated in Fig. 1. f
Referring to these drawings, and particularly Figs. l and 2 thereof, except as modified to embody the features of this invention and in'a manner to be pointed out below, thelasting rrachine illustrated therein. is similar to the machine disclosed in applicants prior patent, referred to above. Accordingly, only so much of the machine will be illustrated herein as is necessary for an understanding of the features of the present invention and reference may be made to applicants prior patent for details of construction not herein shown. Thus, this machine, which has a frame indicated generally by the reference character 10, is provided with toe-embracing wipers 12, 12, associated with a wiper carrier 14 and adapted, during the operation of the machine, Vto be advanced and closed and also moved in directions extending heightwise and lengthwise of the shoe being lasted by mechanism, not herein shown, which is contained within the frame and is similar to that disclosed in applicants prior patent. For supporting the shoe during the operation of the machine, the herein illustrated machine has a shoe-bottom rest 16, a toe rest 18 and a heel rest 20, theseV parts corresponding, respectively, to the members 26, and 66 ofapplicants prior patent. Also, a U-shaped retarder 22 and an insole holddown 24, Fig. 5, are provided which correspond in structure and function to the members 28 and 422 of applicants prior patent.
The toe rest 18 is'secured to the upper end of a post 30 which is mounted forv vertical sliding movement in the frame 10. This post is pinnedv'to a sleeve 31 which is slidably received in the upper end of av yoke member 32 and extends downwardly through this yoke member and through a second sleeve 34 mounted in the lower end of the yoke member. The sleeve 34, which is provided at its upper end with a flange 36, is threaded into the yoke member and is held in place by means of a locky nut 38, Figs. 1 and 2. A coil spring 40 surrounding the post 30 and interposed between the frame 10 and the upper end of the yoke member tends at all times to urge the yoke member, as well as the post 30 and toe rest 18, downwardly. Surrounding the post 30 withinV the yoke member 32 and interposed between the flange 36 of the sleeve 34 and a thrust ilange 42 0n the sleeve 31 is a compression spring V44. Connected .to the yoke by mean-s of a link 46 is a lever 48 which is pivotally mounted on a cross shaft 50. This lever is adapted to be rocked in a counterclockwise direction, by means of a cam, not shown, Vwhich is associated with a cam shaft, 'not shown, but corresponding to the cam shaft 8 of the machine of applicants prior patent, during an initial Stage in the operating cycle of the machine. As a result of this swinging movement of the lever, the toe rest is moved upwardly into engagement with the toe end of a shoe S, herein illustrated as compri-smg upper materials U, assembled on a last L with an insole I, to press it yeldingly against the shoe-bottom rest 16 with a' force which is determined by the strength of the spring 44. As will be apparent, the action'of the spring 44 corresponds to the action of the spring 36 of the machine disclosed in applicants prior patent. However, whereas during a later stage in the operating cycle of the machine `of applicants prior patent,'the toe rest is sub- Vtion with the chamber 66.
jected to the action of one or the other or both of two additional springs in order to force the shoe more rmly against the shoe-bottom rest, in the herein illustrated improved construction the toe rest is rigidly locked against downward movement in the following manner.
Referring e-specially to Fig. 2, the lower end of the post 3) is slidably received in two bores 60, 62 formed in a housing 64 which is shaped to provide internal chambers 66 and 68. Located in the chamber 66 is a sleeve member 70 which opens at its lower end into the chamber 68 and is provided with lateral ports 72, 72 in communica- The interior of the Isleeve member communicates with the chamber 68 through longitudinal bores 74, 74 formed in a valve seat member 76, threaded into the lower end of the sleeve member. Slidably mounted at one end in this valve seat member and at its other end in a bushing 78, associated with thc upper end of the sleeve member 70, is a hollow valve stern 80 which is provided with a conical valve head 82 and has a central bore 84. interposed between the bushing 78 and a washer 86, held in place on the upper end of the valve stem by means of nuts 88, 8S is a coil spring 90. Slidably mounted in the bore 84, by means of enlarged portions adjacent to its upper and lower ends, is a rod 92 having an enlarged head 94 at its upper end and bearing at its lower end on a ball valve 96. This ball valve is lo cated ina shouldered bore 98, formed in the valve head 82, and this shouldered bore is in communication with two bleed ports 100, which extend radially of the valve stem 80. The ball valve 96 tits rather loosely within the bore 98 and a coil Vspring 102 is arranged to urge it yeldingly toward the valve seat provided by the shouldered upper end of this bore.
Pivotally mounted 'on the housing 64 is an arm 110 which carries an adjustable abutment screw 112 adapted to engage the enlarged head 94 of the rod 92. Passing through a clearance hole 114 in the end of this arm is an operating rod 116 on which there is adjustably mounted, by means of nuts 118, a thrust member 126 against which the upper side of the arm is yeldingly held by means of a coil spring 122, interposed between the arm and a thrust washer 124 held on the rod by means of nuts 126. As shown in Fig. 1, the rod 116 is connected to a lever 128 which is pivotally mounted on a cross shaft 130. This lever carries a cam roll, not shown, which is associated with a cam on a shaft, not shown, but corresponding to the cam shaft 8 of the machine of applicants prior patent. This cam is so shaped that at the beginning of the operating cycle of the machine the arm 116 is held in the position in which it is shown in Fig. 2.` Thus, when the lever 48 is rocked in a counterclockwise direction, to elevate the post 30 and to move the toe rest 18 into engagement with the toe end of a shoe, the lower end of the post 30 slides upwardly in the bores 60, 62 in the housing 64. The chambers 66, 68 of the housing 64 are iilled with a suitable liquid, such as oil, approximately to the level indicated in Fig. 2, and as the post 3i) moves upwardly a portion of this liquid is drawn into the chamber 68 from the chamber 66 through the bores 74, 74 and around the valve 82 which is now held in opened position. At a later stage in the operating cycle, after the upward movement of the yoke vmember has been arrested by a dwell on the cam which is associated with the lever 48, the lever 128 is rocked inra counterclockwise direction, Fig. l, thus elevating the arm 110 and permitting the conical valve head 82 to be drawn against its seat on the member 76 by the spring 96 and the ball valve to be seated by its spring 102. The toe rest 18 is now rigidly locked against downward movement by means of the liquid which is trapped in the chamber 68 beneath the lower end of the post 30. The downward thrustof the post 30 which is transmitted to the housing 64 is sustained by a boss 132, formed integral with the frame 1t), and into which a cylindrical extension 134 of the housing 64 is fitted.V At the conclusion of the operating cycle of the machine, the lever 128 is rocked ifn'- a clockwise direction by'its" associated cant thus swing'- ing the arm 110- in a counterclockwis'e direction, Fig; 2. Asthe arm is thus swung, the ball valve 96 is lirst moved awa-yv from its' seat by the rod 92 thus permitting liquid to flow through the bleed ports 100" andequalize' the pressure on both sides of the valve 82. Immediately thereafter, the valve 82 is moved away from its seat by the sternI 80' to the position shown in Fig. 2. Finally, the lever 48A is rocked in a clockwise direction' by itsV associated cam to move the yoke member 32, post and toe rest 18 downwardly' to the positions shown in` Fig. 1, the post 3l) now sliding freely in the bores 60, 62 in the housing 64` as the liquid in the housing is transferred from the chamber V68 to the chamber 66 through the bores 74, 74.
`The" heel rest 21? has a cylindrical stem 150 which is received within a bore 152, formed in a block 154, and is held in place on this block by means of a,r clamp plate 1'56 and screw 153, Fig. l; The block 154 is slidably mounted, byrmeans of an arcuate guide 160, onacarriage 162 which, in turn, is slidably" mounted on rectilinear guideways 164, 164 formed on a= slide 166, Fig.'4. For holding the block 154 in different' positions of adjustment along the arcuate guide 160, alocking pin 168 which is adapted to be insertedV into one of several holes 170, formed in the guide 160, is provided. Similarly,the carriage 162'7is adapted to be held in different adjusted positions along the slide 166 by means of one of two springpressed plungers 172, 172 `which are arranged to enter a selected hole, in one or the other of two'parallel series of holes 174, 176 formed in the slide 166, Fig. l. These spring-'pressed plungers` are operated by meansof j a' knob 178 which is rotatably mounted on the carriage 162; Associated with this knob' are cam' means, not shown, which are adapted, when the knob' is rotated' in one` direction, to withdraw bothof the p'lun'gers 1472, 172 tot arr inoperative position thus releasing the carriage 1162 formovement on the slide 166. Upon-reverse rotation of this. knob, the two plun'gers are released-f to the actions of their respective springs, so that one or' the other ofthese plungers will enter into a hole in the seriesof-'holes 174 or 176', when thecarriage is in= a position to aline this plunger and one of the holes. The several holes in the series 174, 176 are offset by an amount equalv tohalf the distancey between holes so that a line adjustment of the location of the carriage 162 on the slide 166 may be obtained.
The slide 166 is slidably mounted, by means of guide# ways 19t), 19d on a carrier member 192; Thisy carrier memberV is pivot'ally supported, by means of a pivot pin 194, on one end of a longer 196, 'the-pin' 19'4 passing through interlitted portions of the carrier member 192'and of the plunger 196, as shown in Fig. 4'. Thi'slplunger, is slidablytitted in a bore' 198 formed in' a bracket member Zlltl which is` secured to the fronty of' the machine frame' by means of screws 202,'one of which appears inFig'. 3 of the drawings. Suitable keys 197', l97and keyways 199, 199 are provided to hold the plunger.` 196 against rotation in` the bore 198, Fig. il. Adjacent? to the hole 198, the bracket member is slotted at 2t'l4andV a binding screw 206 is` provided for clamping the. frame. against the plunger to hold the latter againstl slidingl movement in` the hole 198. Formed integrally with the pin 1194 is an arm' 208v which isheld against rotation, relatively tothe plunger 19,6, by means of a key 219 formed. integrally with the plunger and` projecting into a cornplernentally"shapedl keyway 212 inthearm. Connected at one end, byrneansofapn214, to the arm 2% is a. link 216 the other end of which! is pivoted on an arm 218- by means of a pin: 220;. Fig; 3'. This arm is mounted at one end'on a lixedpivot stud 222, associated with the bracket member 200 and'fhas connected toits opposite end, by means of a pin 224, one `end of a second link` 226. The other end of. this link is'pivotall'y connected to lthe carrier member 192 by means of a pin 228.. Also connected to the carrierxmernb'er by? the' pin is pivotally connected to a Block 232', Fig. 4. This bloeit is slidably mounted on a gnidewa'y' 2334, Fig.Y 3', formed in the bracket member 200, and is fitted between the Bracket member `and a rail 236 which isl secured at its opposite ends to the bracket member.
Formed integrallyA with and extending downwardly from the lower side of the bracket member 200 is a hollow housing 240` in which there is journaled a shaft 242', Fig.V 4. Secured to this'shaft, within the housing 240, is a helical gearl 244 which is in mesh with another helical gear 246 carried by a shaft12'48', also journaledin' the housing 240. The opposite ends 250, 252 of the shaft 240 extend beyond the'housing and are provided', respectively, withl right and left-hand screw portions which are threaded through stop blocks 254, 256. These stop blocks are slidably mounted on a guideway 258", formed integrally onthe lower side of the bracket' member 200, Fig. -l. Extending downwardly from the lower side of the block 232, Fig.` 4, is a projection 260 which is in line with the upper ends of the blocks 254, 256. hand wheel 262 is provided for turning the shaft 242 to'elect displacement of the stop blocks, equally and in opposite directions, by means of the right andleft-hand threaded portions of the shafts 250, 252'. Y
From the foregoing description, it will be appreciated that the slide 166, carriage 162, block 154l and heel rest 20 are' mounted for rectilinear sliding movement on the' carrier member 192. When the carrier member is in' the position shown in Fig. 3, it is disposed at an angle to the longitudinal center Vline of the machine x-x which passes through the mid'portionv of the wipers 12, 12 and the direction of'movement of the heel rest is along a line y--y which is inclined at this same angle to the longitudinal center line` of the machine and is offset from the carrier so that' the line y-y intersects the center line x-x as indicated. Because of the usual manner of pattern grading, when shoes of diiferent sizes on the same style of last are placed in the machine with the center points a of their toe ends 0nthe center line x--x and with the lingitudinal median lines of their foreparts the same vertical plane as this center line, the' center `points "b" of their respective heel ends will all lie otr a straightl line which, if the stop 254', Fig. 4, is properly set for the particular style of last, will conrpond to the line y`--y. I`t therefore follows, with the toe` endY of a left shoe S placed against the U-shaped retarder 22, Fig. 5, which will position the centerpoint "a of the toe end thereofon the line x-x, that when the heel rest 20' is moved into engagement with the heel end of the shoe,- as' a result of `movement of the slide 166, carriage 162, block 1'54` and the heel rest, on the carrier meml'jer 192, to the left as viewed in Fig. 3, the heel end of the shoe will be' shifted laterally, one way or another, until the center point li of its heelendl is on the line y-y. When the heel end of the shoe has thus: been positioned by the heel, the median line of its forepart will be in the same vertical plane as the line J-x and the toe end` of the shoe will be symmetrically located relatively to the two wipers' 12, 12.
The stopl blocks 254, 256 are so disposed that, when the clamp screw' 206 is l'oos'erle'd and the carrier 'member 192 is swung around so a's to bring the projection 260 on the block 232 againstthe' other stop' block 256, the line yy" will be inclined: at the same' angle on the opposite side ofthe center line' x-'x and the heel res'lt" will be Y condition tor locate a right shoe onthe same style of last". Theconditionjust explained obtains with lasts of different5 styles except thatthe angular `relationship between the line y-y` and the line x-x varies with different styles of last.v Hence, in order to accommodate lasts of' dilere'nt styles, all that the operator is required to do isto set the stopt` hlo'cks 254, 256, by' rotating the hand wheel 262, to provide the desired angularity' of the carrier member 192 in` each' ofl its right and'v left-hand positions; To facilitate-suchadjustment of'thestop blocks, the railI 236 is provided with suitable arbitrary indicia, see Fig. 3, and the block 232 has inscribed thereon an index line 264.
When the machine is idle, the slide 166 is in the position shown in Fig. 3 ofthe drawings and with the heel rest 20 separated a short distance from the heel end of a shoe placed in the machine, the position of the heel rest being variably determinedby adjustment of the carriage 162 relatively to the slide 166, in the-manner indicated above, to accommodate shoes of different sizes. During an initial stage in theoperating cycle of the machine, shortly after the toe rest 18 has been elevated to press the forepart of the bottom of the shoe-against the shoe bottom rest-16, but before the valve 82 has been closed to lock the toe rest in position, the slide 166, carriage 162, block 154 and heel rest 2i) are moved along on the carrier member 192, to the left as viewed in Fig.
3, to bring the heel rest into engagement with the heel end of the shoe thereby positioningr'the heel end of the shoe laterally in such manner that its toe end, which is centered by the retarder 22, is properly located relative- 1y to the wipers 12, 12 as just explained. For thus moving the slide 166 the following arrangement is provided.
Extending-outwardly from the frame 10 is a rod 230 which corresponds in function and mode of operation to one of the rods 94 of the machine illustrated in applicants prior patent, referred to above. Pivotally connected to the outer end V of this rod are a pair of links 282, 282, and connected to these links is one end of a second link 284, the opposite end of which is connected to the slide 166, Fig. 1. 280, by means of links 286, are twoV bell-crank levers 288, Fig. 4, whichv are pivoted on an outstanding portion 290 of the bracket member 200, Fig. l. These levers are connected to an hydraulic locking cylinder 292 by means of links 294 and cooperating with this cylinder is 180 correspond, respectively, to the cylinder 292, piston 296, valve (not shown), valve stem 298 and valve spring (not shown) of the herein illustrated construction.
Thus, when the rod 280 is yieldingly movedv to the left, Fig. l, in the same manner and by mechanism similar to that shown in applicants prior patent, toY force the heel rest 20 yieldingly into engagement with the heel end of the shoe, the cylinder 292 will be moved downwardly, relatively to the piston 296, and the valve which is associated with the piston will open, against the resistance of its spring, to permit the transfer of fluid from one side of the piston to-.the other within the cylinder 292. However,-movement of the cylinder in a reverse direction, i. e., upwardly in Fig. 1, will be prevented by the uid trapped beneath the piston by the valve which is held in closed position by the pressure of iluid acting on the lower side of the piston as well as by its associated spring. Thus, the heel rest is locked rigidly against movement to the right, Fig. 1,or away from the heel end of the shoe.
At a later stage in the operating cycle of the machine, after the wipers 12, 12 have been operated to lay the lasting margin of the upper materials of the shoe inwardly over the bottom of the shoe at its toe end and to press these materials firmly against the bottom of the shoe, the rod 280 ismoved reversely, as is explained in applicants prior patent, to withdraw the heel rest from engagement with the shoe. Before this happens, the toe rest is lowered to the position in which it is shown in Fig. 1 and, as the toe rest moves downwardly, the valve which controls the flow of fluid through the piston 296 is opened in the following manner. Secured to the toe rest is a cam member 300 Also connected to the outer endY of the rod which is adapted to engage a roller 301 carried by an arm 302, Fig. 1. This armV is secured to one end of a shaft 304 which is journaled in a portion of the bracket 200 and carries at its other end another and shorter arm 306. As is shown in Fig. 1, the end of the arm 306 is in engagement with the upper end of the valve stem 298. Thus, when the toe restris elevated, the cam 300 moves away Vfrom the roller 301 Von the arm 302 and frees the valve in the piston 296 for movement to its closed position. 0n the other hand, when the toe rest is moved downwardly, the cam 300 causes the arm 302, 306 to swing in a clockwise direction, Fig. 1, thereby depressing the valve stern 298 and opening the valve to release the rod for movement to the right.
As in the machine of applicants prior patent, the wiper carrier 14 is mounted for rectilinear movement in a generally horizontal planetoward and away from the toe end of a shoe in the machine, and also for movements in directions extending heightwise of the shoe by means including a pair of supporting links 320, 320, Figs. 1, 5 and 6. Each of these links is associated with an operating lever 321 and these two operating levers are actuated in unison, by means of a cam on the cam shaft of the machine, not shown but corresponding in function to the cam 294 of the machine of applicants prior patent, to impart the aforementionedheightwise movements to the wiper carrier. In the machine of applicants prior patent, the links 216, 216 which correspond to the links 320, 320 of the herein illustrated machine, are connected directly to the wiper carrier so that the action of the operating cam is transmitted positively to the wiper carrier. Also, in the prior machine, after the wipers have been operated to Wipe the upper materials upwardly around the toe end of the shoe and then have been advanced and closed to wipe the lasting margin of the upper materials inwardly over the bottom of the toe end of the shoe, the wiper carrier is moved downwardly by the links 216, ,216 and the cam 294 to increase the pressure which is exerted by the wipers on the upper materials. At this point in the operating cycle of the prior machine, the shoe isl yieldingly supported against the downward force exerted by the wipers by means of a toe rest, which, as explained n the prior patent referred to above, is subjected to the action of one or both of two additional springs. In the herein illustrated machine, during the operation of the wipers, the shoe is rigidly supported by the toe rest 18 which, prior to the operation of the wipers, is locked in position by the hydraulic locking mechanism which has been described above. Hence, in order that the upper materials, as well as the toe end of the shoe, may not be subjected to excessive pressure by the wipers, either during their overwiping action or when the overwiped upper materials are thereafter bedded down as a result of the downwardV movement of the wiper carrier, the following arrangement is provided.
Referring particularly to Figs. 5 and 6 of the drawings, each of the links 320 is connected, at its upper end, to one end of a lever 322 which is supported on a pivot pin 324 mounted in the wiper carrier. Each of these levers is provided with an abutment surface 326 which is normally held in engagement with a complemental surface 328 on the carrier by means of a compression spring 330, interposed between the bottom of a recess 332, formed in the carrier, and an adjusting plug 334 threaded into the lever. Adjacent to the springs 330 and located near the end of each lever 320 is a plunger 336 which is supported by a compression spring 338, seated on an adjusting plug 340. In line with each of the plungers 336 and adjustably secured in the wiper carrier 14 is an abutment plug 342. With the arrangement just described, during the upwiping action of the wipers 12, 12, the carrier 14 is positively moved upwardly by means of the links 320, with-the abutment surfaces 326, 328 in contact, as shown in Fig. 5. Now, after the overwiping of the upper materials has been completed, the upward movement of the Vfour springs 330, 330 and338, 338. Thus the rier can yield upwardly to relieve this pressure by compressing the spring 330, the levers 322' swinging in a counterclockwise direction as viewed in Figs; and 6, and the abutment surfaces 326, 328 separatingvslightly. Such upward movement of the Wiper carrier` as now oc'- curs will not, however, be sutiicient to bring the upper ends of the plungers 336 into engagement-with the abutment plugs 342 and, accordingly, the maximum Wiper pressure appliedduring the' overwiping action will be determined by the strength of the springs 330. After the upper materials have thus been wiped inwardly over the bottom of the shoe, the links 320 are moved downwardly by their associated cam,v which as already explained cor responds to the cam 294 of the machine of applicants prior patent, to cause the wipers Vto apply an increased or bedding down pressure on the upper materials. This downward movement is sufficient to causeV the parts to are pressed against the upper materialswith an increased forcewhich is determined by the combinedl actions of the desired heavy bedding down pressure is provided.
Applicants prior machine is, as explained'in the patent referred to above, intended for use in lasting the toe ends `of shoes in which the upper materials are secured to the insole in lasted po-sition by means of tacks driven through openings in the wipers. Thus,;in thefherein illustrated machine, the wipers 12, 12` have been disclosed as provided with openings o through which the tacks are driven. However, in order to simplify the disclosure, the tack-driving mechanismhas been `entirely omitted since it forms no part of the present invention.
The mode of operation of the several parts of the herein illustrated machine have been explained above in more or less detail and a complete operating cycle thereof will now be outlined. Assuming that the first shoe to belasted is a left shoe, the stop blocks 254, 256 will iirst be adjusted. to provide the desired angularity of the carrier member 192 as determined by reference to theA indicia on therail 236 and the carrier will be swung to the position v shown in Fig. 3 and locked in this position by means of the clamping screw 206. Also, the operator will move the block 154 along the arcuate guideway 160 as desired to locate the heell rest properly for the heel height of -the shoe being lasted and' he` will similarly adjust the carriage 162 on theslide 166 for the particularA size of the shoe. When the machine isy atrest, the heel restwill be withdrawn as shown in Fig. 3 and the toe rest will be t lowered tothe. position in which it is shown in Fig. l..
Also, the wipers 12, 12 will be retracted, as'V shown in Fig. l, and the retarder 22, shown inFig. 54 but omitted from the disclosure of Figs. l and 3, will'be in its lowered and inclined position as shown in Fig. 5. of the drawings. InV presenting the shoe to the machine, the,v operator turns back. the upper materials U at thetoe end of the s hoe Vand places theftoe end of thelast against the retarder, thus centering the toe end of the shoe relativelyl to the wipers 12,. 1.2. Next, he elevates the shoe until the bottom: of
the insole I. istinengagement withV the shoe-bottom rest 16 and, after swinging the heel end of the' shoe approximately into a position` to bring the medianline of the forepartV into the same vertical planel as the longitudinal center line x-x of the machine, he depresses thestarting treadle to initiate a cycle of operations of the machine; It will be observed, because of the manner inwhich. the
l heel rest is-supportedv on the carrier member. 192. whichis' offset on the righthand' side ofthe center line .vc-' x,
16 that none of the supporting parts vfor the heel; rest" are in positions to interfere in any way with the presentation of the shoe into the open-sided space thus afforded on theI left-hand side of the carrier in the manner just explained. Y
Immediately after the operating cycle has been intiated, the toerest 118 is elevated by means including the lever 48, yoke 32 and spring 44, to press the bottom of the shoe against the shoe-bottom rest 1'6 and, shortly thereafter, the lever 128 is rocked in a counterclockwise direction thereby permitting the valve 82 to be closed to lock the toe rest rigidly in position. Before the toe rest is thus locked, however, the heel rest is advanced into engagementV with the heel end of the shoe and, as it contacts the shoe, it will swing the heel Vend of the shoe into a position in which the point b is on the line y-y thereby locating the'vforepart of the shoe in the desired position, relatively to the wipers 12, 12 and to the center line x-x of the machine. At this time, the toe rest is heldin its elevated position only by the action of the spring 44 so that the shoe is free to pivot about its point of engagement with the retarder 22 under the action of the advancing heel rest. As is explained more particularly in the priorpatent referred to above, the rod 280 is actuated by means of mechanism including a spring, not shown, so that the heel rest is yieldingly` advanced into engagement withv the heel end of the shoe. Moreover, inasmuch as the elevation of the toe rest 18 releases the valve of the hydraulic heel-rest locking device the heel rest is automatically locked in its advanced position. Hence, during tlie succeeding portion of the operating cycle in which the upper materials are ir'st wiped upwardly aroundv the toe end of the shoe and are then wiped inwardly over the toe end of the insole I by the wipers 12, 12, as is explained in detail in applicants prior patent, the shoe is firmly held in position at the toe end by the shoe-bottom rest 16 and the locked toe rest 18 and at its heel end by the locked heel rest 20.
As the wipers are operated to wipe the upper materials inwardly over the toe end of the insole, the wiper carrier 14' is supported substantially in the position shown in Fig. 5'V of the drawings so that, as the wipers 12, 12 are adT vanced andV closed in the manner explained in applicants prior patent, the pressure exerted by these wipers on the upper materialsis determined bythe two springs 330, 330.
However, immediately after the overwiping action has Y l been completed, the pressure of the wipers on the upper materials is increased as a result of the downward movement. of the two links 320, 320 which swings the levers 322, 322 to the positions indicated in Fig. 6 of the drawings and subjects the upper materials to a .bedding down pressure which is determined by the force of the four springs 330, 330 and 338, 338. The main cam shaft of the machines (corresponding to the shaft 8 of the machine of applicants prior patent), now comes to a stop with the upper materials under the bedding-down pressure. In the machine of applicants prior patent, the tacking mechkanism would'now be operated to drive tacks through the openings o in the wipers to secure the upper materials been completed, the operator would again depress the starting treadle to cause the operating cycle of the machine to be completed and the several operating elements to be returned to their initial positions as shown in Figs. l and 3 Vof the drawings. Before depressing the treadle asecond time, however, the operator would grasp the shoe and, as the toe rest and heel rest were returned to their original positions, he would remove the shoe thus released from the machine. If desired, a suitable receptacle for receiving the shoe could be attached to the machine to receive the shoe which would fall directly thereinto as the toe rest and heel rest were returned to their original positions.
' While the features of the herein illustrated machiney are especially adapted for use in a machine of the type dis losed in the prior patent referred to above, they are not limited tovsuchv use and may be embodied in a machine for lasting the toeends of shoes in which the upper ma- .terials are secured in lasted position by means of an adhesive as, for example, is done in the machine disclosed in United States Letters Patent No. 2,596,169, issued on May 13, 1952, on an application led in the names of Leonard R. Proulx and Roscoe L. Hill. If, as just suggested, the features of this invention Wereapplied to a machine of the type illustrated in the Proulx et al. patent, the operating cycle would be similar to that set forth in that patent. Hence; as explained in the patent, the wipers would be advanced and closed, then elevated and retracted, and nally again advanced and closed, and at the conclusionrof each advancing and closing movement the `wipers would'be forced downwardly against the upper materials. Thus, as the wipers were forced downwardly after each advancing and closing movement, the levers 322, 322 would be swung to the position shown in Fig. 6 of the drawings to subject the upper materials to the heavy fbedding down pressure provided by the action of the four springs 330, 330 and 33S, 338. However, during each advancing and closing movement, the wiper carrier would be free to rise, in response to pressure of the wipers on the upper materials, against the resistance of only the two springs 330, 330. As in the herein illustrated machine, during the upwiping movements of the wipers the carrier member 14 would be elevated by means of the links l320, 326 and the cooperating abutment surfaces 326, 328 on the levers 322.
Havingdescribed the invention, what I claim as new and desire to secure by Letters Patent of the United States is: Y
l-. In a lasting machine having toe-embracing wipers for wiping the upper materials of a shoe into lasted position Varound the toe end of a last, the combination of means for positioning the toe end of a last lengthwise and laterally relatively to said wipers, a heel rest for engaging the upper materials at the heel end of the last `to hold the shoe against lengthwise movement during the operation ot said wipers, said heel rest being mounted for rectilinear sliding movement toward and away from the heel end of the shoe by means of a carrier member, and means for pivotally supporting said carrier member in offset relationship to the path of movement of the heel rest on one side only of the shoe.
2. ln a lasting-machine having toe-embracing wipers for wiping the upper materials of a shoe into lasted position around the toe end of a last, the combination of means for positioning the toe end of a last lengthwise and laterally relativelyto said wipers, a heel rest for engaging the-upper materials at the heel end of the last to hold the shoe against lengthwise movement during-the operation of said wipers, said heel rest being mounted for rectilinear sliding movement toward and away from the heel end of the shoe by means of a carrier member, means for pivotally supporting said carrier member in odset relationship to the path of movement of the heel rest Von one side only of the shoe, and stop members for limiting theV pivotal movement of the carrier, said stop members being so arranged that the path of movement of the heel rest, as it slides on the carrier, intersects the longitudinal center line of the machine at the same angle in each of the two extreme positions of the carrier member as determined by said stop members.
3. in a lasting machine having toe-embracing wipers for wiping the upper materials of a shoe into lasted position around the toe end of a last, `the combination of means for positioning the toe end of a last lengthwise and laterally relatively to said wipers, a heel rest for engaging the upper materials at the heel end of the last to hold the shoe against lengthwise movement during the operation of said wipers, said heel rest being mounted for rectilinear sliding movement toward and away from the heel end ofthe shoe by means of a carrier member, means for pivotally supporting said carrier member in otset relationship'to thepath of movement of the heel rest on Aone side only of the shoe, and manually adjustable stop members for variably limiting the pivotal movement of Vthe carrier, said stop members being so arranged that the path of movement of the heel rest, as it slides on the carrierv member, intersects the longitudinal center line of the machine at the same angle in each of the two extreme positions of the carrier member as determined by said stop members. Y 4. In a lasting machine vhaving toe-embracing wipers for wiping the upper materials of a shoe into lasted position around the toe end of a last, the combination of means for positioning the toe end of a last lengthwise and laterally relatively to said wipers, a V-shaped heel rest for engaging the upper materials at the heel end of the last to hold the shoe against lengthwisemovement during the operation of said wipers and for thereby further positioning the toe end relatively to said wipers, said heel rest being mounted for rectilinear sliding movement toward and away from the heel end of theshoe by means of a carrierk member, and means for pivotally supporting said carrier member in offset relationship to the path of movement of the heel rest on one side only of the shoe. 5. In a lasting machine having toe-embracing wipers for wiping the upperrmaterials of a shoe into lasted position around the toe end of a last, the combination of Y means for positioning thetoe end of a last lengthwise and laterally relatively to said wipers, a V-shaped he'el rest for engaging the upper materials at the heel end of the last to hold the shoe against lengthwise movement during the operation of said wipers and for thereby further positioning its toe end relatively to said wipers, said heel rest being mounted for rectilinear sliding'movement toward and away from the heel end of the shoe by means of a carrier member, means for pivotally supporting said carrier member in oiset relationship to the path of movement of the heel rest on one side only of the shoe, and stop members for limiting the pivotal movement of the carrier, said stop members being so arranged that the path of movement of the heel rest, as it slides on the carrier member, intersects the longitudinal center line of the machine at the same angle in each of the two extreme positions of the carrier member as determined by said stop members.
6. In a lasting machine having toe-embracing wipers for wiping the upper materials of a shoe into lasted position around the toe end of a last, the combination of means for positioning the toe end of a last lengthwise and laterally relatively to said Wipers, a V-shaped heel rest forengaging the upper materials at the heel end of the last to hold the shoe against lengthwise movement during the operation of said wipers and for thereby further positioning its toe end relatively to said wipers, saidheel rest being mounted for .rectilinear sliding movement toward and away from the heel end of the shoe by means of a carrier member, means for pivotally supporting said carrier member inoiset relationship to the path of movement of the heel rest on one side only ofthe shoe, and manually adjustable stop members for variably limiting the pivotal movement of the carrier, said stop members being so arranged that the path of movement of the heel rest, as it slides on Vthe carrier member, intersects the longitudinal center line of the machine at the same angle in each of the two extreme positions of the carrier member as determined by said stop members. v
7. In a lasting machine having toe-embracing wipers for wiping the upper materials of a shoe into lasted position around the toe end of a last, theV combination of means for positioningA the toe end of a last lengthwise and laterally relatively to said wipers, a heel rest for engaging the upper materials at the heel end of the last to holdrthe shoe against lengthwise movement during the operation of said wipers, said heel rest being supported for heightwise and lengthwisev adjustment on a slide member which is mountedjfor` rectilinear movement to` carry the heel rest toward andfaway from the heel, end of' the shoe -by means of' a carrier memben and' means for pivotall'y 4and laterally relatively to said wipers,` a V-shaped heel rest for engaging the upperv materials at the heel end of the lastrtohold the shoe'against lengthwise movement during the operation of said wipers andvfor thereby further positioning its `t'oe end relatively to said wipers,. said heel rest being supported for heightwise and' lengthwise adjustment on aslid'e member` which is mounted 'for rectilinear movement to carry the heelrest toward and away from Vthe heelend of the shoe by means of va carrier member, and means for pivotally supporting said carrier member in odset relationship'to the path of movement of the heel rest on one side only ofthe shoe.
9. Inl a lastingmachine having toe-embracing wipers lfor wiping, the upper materials of ashoe into lasted position aroundthe. toe end of a last, the' combination of means for positioning the'toel end' oa last lengthwise and laterally rel'ativelyto saidY wipers, a heel rest for engaging the heel end of the lastmto hold' the" shoe against Vlengthwise. movement during the operation of said wipers,. said heel rest being supported Yforheightwise and llengthwise adjustment on a slid'e member which is mounted for rectilinear movement to" carry the heelhr rest toward and away from the heel end of the shoe by means of acarrier mem'- ber, means 'for pivotally supporting saidcarrier' member in offset relationship Vto the patltof movementof the heel rest; on one side only'r ofthe shoe, and stop members for limiting `the pivotal movement, of the carrier member, said' stop members being so arranged that the path of movement of the heel rest*,-as i`t slideson the carrier member, ,intersects the longitudinal` center line of the machine at the same angle in each of` the two eXtreme positions `of the carrier member asdetermined by `said stop members. t n
'10. In a lasting machine; havingtoe-,embracing wipers for wiping the upper materials of-:a-,shoeinto lasted position around the toe Vend of a. laste/theVV combinationl of means for positioning the toeend, ofu the last. lengthwise and: laterally relatively to said wipers-,ga V-shapedwheel resti for engaging the upper materials a1: the heel end of the last tohold the shoe against; lengthwise movement during the operation of said wipers and for thereby further positioning its toe end relatively to said wipers,` said heel rest being supported Vfor heightwise and lengthwise adjustment on a slide member which is mounted for rectilinear movement to carry the heel rest toward and away from the heel end of the shoe by means of a carrier member, means for pivotally supportingsaid carrier member in oiiset relationship to the path of movement of the heel rest on one side only of the shoe, and stop members for limiting the pivotal movement of the carrier member, said stop members being so arranged that the path of movement of the heel rest, as it slides on the carrier member, intersects thelongitudinal center line of the machine at the same angle in each of the two extreme positions of the carrier member as determined by said stop members.
ll. In a lasting machine having toe-embracing wipers for wiping the upper materials of a shoe upwardly around the toe end of a last and inwardly into lasted position over the toe end of an insole on the last, the combination of a relatively fixed shoe-bottom restfor engaging the bottom of the shoe, a movable toe rest for clamping the toe end of a shoe against said shoe-bottom rest and adapted to support the shoe against heightwise movement in one direction during the operation of the wipers, means including af yieldable connection for effecting granges movement of.` the toe rest initiallyintoY clamping engagement with the toe end or the' shoe, a piston connected to the toe rest, a cylinder in which said piston is fitted', a-
compound valve includ-ing amain valve and' a bleed valve for controlling the ilow ofl iluid' to" and from' said"y cylinder, spring means for. holding said valves in closed position to trap fluid in 'said cylinder, during the operation of'said wipers, thereby' to lock said piston against movement and to hold` the toe rest in positi'on to support the shoe rigidly, t
and means for thereafter opening said valves to' release the piston andtoe'rest.
12. In a lasting machine having4 toe-embracing wipers for wipingthe upper materialsof ashfoe upwardlyv around the toe end Vof a Llast andinwardly into lasted' position over thet'oe end' Aofan'insole on'the last, the combination of a relatively fixed shoe-bottom `restv for engaging the bottom of the shoe, a` Vmovable `toe rest for clamping the toe end of ashoe against said shoe-bottom rest and adapted to support the'shoe against' heightwise move` ment in! one direction during the operationl of the wipers, means including a spring. for effecting movement of the toe rest initially intof clamping engagement with the toe end ofthe shoe, a piston connected to the toe rest, a cylinder in which said' piston is tted, a compound' valve including a mainvalve and a bleed valve for controlling the tiw of"iluid' to and from the cylinder, spring means for holdingl said valves in closedposition's to trap fluid in. said cylinder, during; the operation of said wipers,
thereby to lock said .piston against' movement and to hold' the toe` rest in position to support the shoe rigidly, and means forthereafter opening said valves to release the piston and toe rest; n
1'3. Inv `a last machine having toe-embracing wipers for wiping the upper. materials of afshoe upwardly around the toe end of a last and inwardly into lasted position over the toe end'` of'an insole on the last, the combination of' a relatively iixed shoe-bottomV rest' for engaging the bottom of the shoe, a.V movable toe rest for. clamping the toe end' of'a shoe against said shoe-bottom rest and'` adaptedto support the shoe against heightwise movement in one direction during the operation of Vthe wipers,
means including' a yieldable connection Afor effecting movement off-the toe rest 'initially intoclamping engagement with theA toe end of( the shoe, a piston connected to the toe rest, a cylinder in which said piston is fitted, a compound valve including a main valve and al bleed valvefor controlling the flow of uidto and vfrom the cylinder,l spring means for holding, said'valves` in closed ,positions`- to trap Huid' in saidl cylinder, during. 'the operatinofsaid'wipers, thereby tolbclc said piston against movement and' to hold the toe rest in position to support the shoe rigidly, and means for thereafterl irst opening said bleed valve to relieve the pressure of the fluid in said cylinder and then opening said main valve to release the piston and toe rest.
14. In a lasting machine having toe-embracing wipers for wiping the upper materials of a shoe upwardly around the toe end of a last and inwardly into lasted position over the toe end of an insole on the last, the combination of a relatively fixed shoe-bottom rest for engaging lthe bottom of the shoe, a movable toe restfor clamping the toe end of a shoe against said shoe-bottom rest and adapted to support the shoe against heightwise movement in one direction during the operation of the wipers, means including a springfor Veifecting movement of the toe rest initially into clamping engagement with the toe end of the shoe, a piston connected to the toe rest, a cylinder in which said piston is fitted, a compound valve including a main valve and a bleed valve for controlling the ow of iluid to and from said cylinder, spring means for holding said valves in closed positions to trap fluid in said cylinder, during the operation of said wipers, thereby to lock said piston against movement and to hold the toe rest in position to support the shoe rigidly, and means for thereafter iirst opening said bleed valve vover the'toe end'of an insole on the last, the combination of means for rigidly supporting a shoe, awiper carrier, means for supporting the wiper rcarrier including a pair of links and connections between the links and said carrier so constructed and arranged that the carrier may yield in a direction extending heightwise of the last during the operation of said wipers to wipe the upper materials inwardly over the insole of the shoe.
16,. In a lasting machine Vhaving toe-embracing wipers for wiping the upper materials of a shoe upwardly around the toe end of a last and inwardly into lasted position over the toe end of an insole on the last, the combination of meansrfor Vrigidly supporting a shoe, a wiper carrier, means for supporting the wiper carrier for yielding movement in a direction extending heightwise of the last during the Voperation of said wipers to wipe the upper materials inwardly over the insole of the shoe, said means including a pairof levers pivoted on the carrier, a link connected to one end of each lever, and a spring interposed between the opposite end of each lever and the wiper carrier. l
17. In a lasting machine having toe-embracing wipers for wiping the upper materials of a shoe upwardly around the toe end ofma last and inwardly into lasted position over the'toeend of an' insole on the last,fthe combination of means for rigidly supporting a Shoe, a wiper carrier, and means for supporting the wiper carrier and for imparting movements thereto in directions extending heightwise of the last, said means including a pair ofV links and connections between said links and the carrier so constructed that the wiperpcarrier is positively moved in one direction, during the operation of the wipers to wipe the upper materials upwardly'around the toe end of the last, and may yield in the opposite direction, during the operation of the wipers to wipethe upper materials inwardly over the insole of the shoe. v Y
18. In a lasting machine having toe-embracing wipers for wiping the upper materials of a shoe upwardly around the toe end of a last and inwardly into lasted position over the toe end of an insole on the last, the combination of means for rigidlysupporting a shoe, a wiper carrier, and means for supporting the wiper carrier and for imparting movements thereto in directions eX- tending heightwise of the last, said means including a pair of levers pivoted on the carrier, a'link connected to one 16 end of each lever, cooperating abutment surfacesA on said carrier and on each of the levers adjacent to the end to which said links are connected, and a spring interposed between the oppositey end of each of the levers and the wiper carrier.
19. In a lasting machine having toe-embracing wipers Y for wiping the upper materials of a shoe upwardly around the toe end of a last and inwardly into lasted position over the toe end of an insole on the last, the combination of means for rigidly supporting a shoe, a wiper carrier, and means for supporting the wiper carrier and for imparting movements thereto in directions extending heightwise of the last, said means including a pair of supporting and pperating links and connections between said links and the carrier so'fconstructed and arranged that movement ofthe carrier by the links is eiected positively in one direction, during operation of the wipers to wipe the upper materials upwardly around the toe end of the last, and yieldingly in the opposite direction to cause the wipers to apply pressur'eto the upper materials after the wipers have been operated to wipe the upper materials Y inwardly over the insole of the shoe.
20. In a lasting machinevhaving toe-embracing wipers for wiping the upper materials of a shoe upwardly around the toe end of a last and inwardly into lasted position over the toe end of an insole `on the last, the combination of means for rigidly supporting a shoe, a wiper carrier, and means for supporting the wiper carrier and for imparting movements thereto in directions extending heightwise of the last, `sa'id'means including a pair or levers pivoted on the' carrier, a link`r connected to one end of each lever, cooperating abutment surfaces on Vsaid carrier and on each of the levers adjacent to the end to which .said links are connected, a spring interposed between the opposite end of each of the levers and the ywiper carrier,y and a spring-pressed plunger mounted in each lever and adapted to become eiectve when the wiper carrier Vis moved in a heightwise direction to increase the pressure of the wipers on the upper materials.
References Cited in the `tile of this patent UNITED STATES PATENTS 329,367 Crisp et al. Oct. 27, 1885 365,504 Copeland etal. June 28, 1887 1,280,160 'y Casgrain a Oct. l, 1918 1,882,067 Eastman f p Oct. 1l, 1932 2,094,110 Schoenky l Sept. 28, 1937 2,306,904 Ray Dec. 29, 1942 2,508,064 Hazard Y Y May 16, 1950 2,650,379 Jorgensen -2-; Sept. 1, 1953
US2733460D macdonald Expired - Lifetime US2733460A (en)

Publications (1)

Publication Number Publication Date
US2733460A true US2733460A (en) 1956-02-07

Family

ID=3443034

Family Applications (1)

Application Number Title Priority Date Filing Date
US2733460D Expired - Lifetime US2733460A (en) macdonald

Country Status (1)

Country Link
US (1) US2733460A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891265A (en) * 1957-09-20 1959-06-23 Kamborian Jacob S Lasting machine with improved wiper action
US3632381A (en) * 1967-10-05 1972-01-04 Ceskoslovenska Akademie Ved Method of printing on glassware and earthenware such as tumblers and similar

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US329367A (en) * 1885-10-27 Machine for lasting boots or shoes
US365504A (en) * 1887-06-28 Lasting-machine
US1280160A (en) * 1915-07-06 1918-10-01 United Shoe Machinery Corp Machine for inserting fastenings.
US1882067A (en) * 1930-02-20 1932-10-11 United Shoe Machinery Corp Machine for use in the manufacture of shoes
US2094110A (en) * 1936-05-04 1937-09-28 United Shoe Machinery Corp Lasting machine
US2306904A (en) * 1941-03-14 1942-12-29 William A Ray Fluid control valve
US2508064A (en) * 1945-03-19 1950-05-16 Neptune Meter Co Register controlled auto-stop valve
US2650379A (en) * 1950-10-24 1953-09-01 United Shoe Machinery Corp Lasting machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US329367A (en) * 1885-10-27 Machine for lasting boots or shoes
US365504A (en) * 1887-06-28 Lasting-machine
US1280160A (en) * 1915-07-06 1918-10-01 United Shoe Machinery Corp Machine for inserting fastenings.
US1882067A (en) * 1930-02-20 1932-10-11 United Shoe Machinery Corp Machine for use in the manufacture of shoes
US2094110A (en) * 1936-05-04 1937-09-28 United Shoe Machinery Corp Lasting machine
US2306904A (en) * 1941-03-14 1942-12-29 William A Ray Fluid control valve
US2508064A (en) * 1945-03-19 1950-05-16 Neptune Meter Co Register controlled auto-stop valve
US2650379A (en) * 1950-10-24 1953-09-01 United Shoe Machinery Corp Lasting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891265A (en) * 1957-09-20 1959-06-23 Kamborian Jacob S Lasting machine with improved wiper action
US3632381A (en) * 1967-10-05 1972-01-04 Ceskoslovenska Akademie Ved Method of printing on glassware and earthenware such as tumblers and similar

Similar Documents

Publication Publication Date Title
US2324510A (en) Cement-applying mechanism
US2733460A (en) macdonald
US3397417A (en) Pulling over and lasting of shoes
US2153570A (en) Machine for operating on shoes
US2980931A (en) Holddowns for lasting machines
US2689362A (en) Machine for operating on shoes
US2291631A (en) Insole-punching machine
US2094110A (en) Lasting machine
US2224146A (en) Lasting machine
US2387331A (en) Lasting machine
US2336035A (en) Shoe-supporting means for shoe machines
US2108171A (en) Lasting machine
US2059241A (en) Lasting machine
US1864669A (en) Machine for operating on shoes
US4380524A (en) Cement applying machine and method
US2072213A (en) Lasting machine
US2437696A (en) Machine for operating on shoes
US2278428A (en) Lasting machine
US1968146A (en) Machine for shaping shoe uppers
US2165361A (en) Machine for fastening uppers to insoles
US2651063A (en) Lasting machine
US2724845A (en) Lasting machines
US2244067A (en) Machine for shaping uppers over lasts
US1843232A (en) Lasting machine
US2524883A (en) Machine for working uppers over lasts