US1379923A - Machine for shaping uppers to lasts - Google Patents

Machine for shaping uppers to lasts Download PDF

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Publication number
US1379923A
US1379923A US169557A US16955717A US1379923A US 1379923 A US1379923 A US 1379923A US 169557 A US169557 A US 169557A US 16955717 A US16955717 A US 16955717A US 1379923 A US1379923 A US 1379923A
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sole
machine
last
margin
shoe
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US169557A
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Jorgensen Bernhardt
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United Shoe Machinery Corp
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United Shoe Machinery Corp
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    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43DMACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D21/00Lasting machines
    • A43D21/16Lasting machines with lasting pincers and toe- or heel-embracing wipers
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43DMACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D21/00Lasting machines
    • A43D21/12Lasting machines with lasting clamps, shoe-shaped clamps, pincers, wipers, stretching straps or the like for forming the toe or heel parts of the last
    • A43D21/125Lasting machines with lasting clamps, shoe-shaped clamps, pincers, wipers, stretching straps or the like for forming the toe or heel parts of the last with a plurality of pincers
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43DMACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D21/00Lasting machines
    • A43D21/18Lasting machines with lasting pincers and straight-acting wipers, also for forming the shank portions of shoes

Definitions

  • theinnersole or the-sole of the shoe is usually attached to the'bottom of the last at a plurality of points by tacks which are driven through the sole and into the last at a distance from the margin of the sole. Since the'margin of the sole, to a considerable distance inward from the edge of the last, is thus left unattached, there is danger that the margin may be uplifted from the, last by the frictional engagement of the upper or of the pulling over grippers with the edge of the sole during the upper pulling operation, or it may 'be by the action of lasting wipers in their positioning movement relatively to the shoe preparatory to their overwlping movement,
  • This invention provides, as an important feature, a novel organization of mechanism for positioning the margin of a solein relation to alast and for causing said positloning means to be withdrawni'to permit the upper to be shaped .over the margin of the sole.
  • Theillustrative construction provides a hold-down for engaging the margin of the sole at the toe and means for withdrawing the hold-downinwardly over the sole 1n a dlrection lengthwise of the sole.
  • the toe-hold-down in the illustrative machine, are hold-downs for the ma'rgm of the sole at. the sides of the shoe;
  • the invention provides, as a further feature, a novel construction and arrangement 'ofpositioningmeans' for engaging the margin of the sole during the upper pulling operation and mechanlsm for effecting a withdrawal of 'sald positlonlng means 1n a later period of the cycle.
  • Figure 1 is a vieW in side elevation of the head portion of a pulling-over machine including mechanism in which the invention is embodied, the machine having means for lasting the toe end of a shoe,
  • Fig. 2 is a perspective view of a portion of the machine, illustrating the relation of V the hold-down mechanism to a shoe,
  • Fig. 3 is a view of a portion of the ma chine in side elevation, and partly in vertical section, illustrating the position of the parts at the end of the upper pulling movement of the grippers, I
  • Fig. 4 is a view similar to Fig. 3, showing the toe hold-down retracted
  • Fig. 5 shows in detail a portion of the mechanism for controlling movement of the toe hold-down.
  • the machine has the usual toe gripper 2 and side grippers 4:, these grippers being operated to pull the shoe upper over the last through theaction of updraw levers 6 and 8 to which the respective toe and side grippers are connected.
  • the machine has also a front tacker arm 10 and side tacker arms 12 carrying instrumentalities of the usual construction for laying the upper over the margin of the sole after the upper pulling operation and for fastening the margin of the upper in position on the sole, the front tacker arm in the construction shown carrying wipers 14; which are mounted to swing laterally of the shoe and operated by the inward movementof the front and side tacker arms to wipe the upper into lasted position around the toe end of the shoe.
  • these arms being operated by means of a slide 18 to which movement is imparted by a cam 20 on the main cam shaft 22. If the operation of the machine is effected in three stages, the machine will again come to a stop after the clamp arms have moved into engagement with the shoe, and at this time the operator positions the wipers 14: in engagement with the toe end of the shoe in the correct relation to the shoe for movement inward to wipe the upper over the margin of the sole. The toe gripper is then released from the upper, whereupon the gripper is automatically lifted out of the way of the wipers and the tacking mechanism by the usual spring in the gripper operating connections.
  • a pair of arms 34 Pivoted on the lower side of the carrier 24 for swinging movement in substantially parallel relation to the plane of the sole are a pair of arms 34 which are normally held by a spring 36 with their front ends projecting outwardly as well as forwardly in such position as to be opposed to the margin of the sole at the opposite sides of a shoe when the shoeis presented to the machine.
  • the margin of the sole at inward pressure of the overlaying wipers and swing inward against the tension of the spring 36.
  • a spring plate 38 is secured t0 the head of the machine and arranged to bear frictionally upon the rear ends of the arms 34, the pressure of the spring upon the arms beingincreased by the downward rocking movement of .the carrier 24 which takes place, as usual, during the upper tensioning movement of the grippers.
  • the purpose of the spring plate 38 is to hold the arms 34 with their front ends swung inward until after the side grippers have been returned to starting position in the finalQstage of the cycle of operations of the machine, thus preventing the grippers from striking the arms.
  • the pressure of the spring 38 on the arms is decreased sufiiciently to permit the arms to be swung outward substantially into engagement .with the side grippers by the action of the spring 36.
  • the machine shown is provided further with a. hold-down for engaging and positioning the margin of the sole at the toe endo'f the shoe.
  • This 'hold-down' comprises a plate 40 curved in substantial conformity to-the edge contour of the toe end of the sole and shaped to provide a depending lip for engagement with the feather a of the sole outside of the upper attaching shoulder.
  • the plate 40 is secured to a holder 42 which is pivoted at 44 on a slide 46 mounted in the carrier 24 for movement lengthwise of the shoe.
  • a spring 48 tends to swing the front end of the holder 42 upwardly and a screw 50 which is adjustable in the holder and is arranged to engage the slide 46 serves to determine the elevation of the hold-down 40 with reference to the slide 46 and the arms 34.
  • the slide 46 is providedwith rack teeth 52 which are en aged by a pinion 54 fast on the shaft 26.
  • one endof the shaft 26 is a crank arm 56 provided with a ondxcrank arm 68 connected by a link 70 j to'the slide-18' which serves, as hereinbefore "explained, to operate theside clamp arms '16.
  • Movement of the slide 18 toward the right Fig's 1 and-'2) to'cause the clamp arms to be closed against the shoe at the beginning of the second period ofthe cycle of operations'of the machinethus "serves to rection to retract the hold-down. 40 from 'the' position in which it is shown in Fig. 3 to 'the position indicated by Fig.4, this movement being effected against the tension of' a spring 72 which ispositioned between 24 and tends tomove the slide forwardly.
  • the downwardly curving lip of the hold down 40 is flared outwardlyon its lower face to permit the hold-down to. slide readily over the shoulder of the sole in its retractive movement. With the hold-down thus retracted, the wiping and tacking instrumentalities are permitted to move inward over the margin of the sole and to perform their functions in the usual manner without interference' by the holdf down.
  • a ratchet f .74 is mounted ,uponsone end of the shaft 26 and a pawl 76 is normally heldlby a spring;
  • a tripping member 82 is engaged by a tripping member 82 to cause the pawl to release the ratchet 74 and thus permit the return of the holddown 40 which is effected by the action of the spring 72, hereinbefore described, supplemented by the action of a spring 84: which encircles the shaft 26 close to the ratchet 74 and tends to turn the shaft in the direction to move the hold-down forwardly.
  • the tripping member 82 is carried by a slide 85 with which machines of the illustrative type are provided for the purpose of imparting advancing and retracting movement to the heel rest 86 of the machine,the retracting movement of the heel .rest taking place at a time sufiiciently late in the cycle of operations.
  • a turnbuckle 88 is provided for varying the effective length of the link 62, and by this means the limit of the forward movement of the hold-down may be varied.
  • the arms 34 and the member 40 serve to insure the correct location of the margin of the sole with reference to the last at the sides and the toe end of the shoe respectively, and that these members and the carrier 24 constitute a sole rest for the shoe with which the sole is engaged when the shoe is presented to the machine, the hold-down member 40, moreover, serving to determine the lengthwise position of the shoe in the machine.
  • the machine is started by the actuation of the usual clutch controlling treadle and the grippers are thus caused to pull the upper over the last, the carrier 24: being rocked simultaneously by the cam 28 in a direction to depress the last within the upper through the pressure of the members 34: and 40 on the sole.
  • the machine having come to a stop with the upper under tension, the operator makes any necessary adjustment of the position of the upper on the last and of the tension of the upper in the customary manner.
  • the members 34 yield inwardly as hereinbefore explained.
  • the parts of the machine are returned to their starting positions, the return of the toe hold-down 40 being delayed by the action of the pawl 76 on the ratchet 74: and the return of the side hold-down members 3 L being also delayed by the action of the spring plate 38 on these members, in order to avoid any possibility of injury to the different hold-down members through engagement of the grippers therewith during the return of the latter to their starting positions.
  • the combination with means for pulling an upper at the toe end and at opposite sides of a last at one operation including a gripper for engaging the upper at the toe end of the last and means for operating said gripper to pull the upper, of means for engaging the margin of the shoe sole to position it at the toe end of the last during the upper pulling operation, and means operatively connected to said; margin engaging means for moving it in a direction lengthwise of the sole after the upper has been tensioned.
  • the combination with means for pulling an upper at the toe end of a last and for then holding the upper'under tension with the machine at rest, and means for laying the upper over the margin of a sole on the last upon a subsequent starting of the machine, of means for holding the margin of the sole in position on the last at the toe end during the upper pulling operation, and means for causing said holding means to be moved in a direction lengthwise of the sole in a period of the cycle of operations subsequent to that in which the pulling of the upper is effected.
  • V I r r I 10 In a pulling-over machine, the combination with separate grippers constructed and arranged toengage an-upper respectively at the toe end andat Opposite sides of the forepart, means for operating said grip:
  • the combi nation with means for pulling an upper over a last and side clamp arms movable into engagement with'the sides of the shoe after the upper pulling operation, of means for engaging the margin or" the shoe sole to position it on the last during the upper pulling operation, and means for retracting said sole engaging means from the margin of the sole during the movement of said clamp arms to shoe engaging position.
  • the com bination with means for pulling an upper over a last, side clamp arms, and mechanism for moving said arms inwardly into engagement with the shoe after the upper pulling operation, of a hold-down for engaging the margin of the shoe sole to position it on the last, and connections between the hold-down and said mechanism for retracting the holddown from the margin of the sole during the inward movement of the clamp arms.
  • I 16 In a pullingover machine, the combination with means for pulling an upper over last, side clamp arms, and operating mechanism for moving said arms inwardly into engagement with the shoe, of a holddown for engaging the margin of the shoe sole atthe toe end, and means connecting the hold-down to said operating mechanism for the clamp arms for moving the hold-down lengthwise of the shoe.
  • the combination with means for pulling an upper over a last and means for laying the upper own the margin of a sole on the last, of a holddown for engaging the margin of the sole at the toe end and hold-downs for engaging the margin at the sides during the upper pulling operation, the side hold-downs being mounted to permit them to yield inwardly from the margin during the operation of the overlaying means, and power operated means for withdrawing the toe hold down from the margin of the sole.
  • the combi nation with upper pulling means, of a sole rest for the shoe comprising arms for positioning the margin of the sole at opposite sides o1 the shoe, said arms extending along the sole and being yieldable inwardly from the sides of the shoe in a plane substantially parallel to the plane of the sole, a hold-down for engaging the toe end of the sole during the upper pulling operation, and power operated means for retracting said toe holddown from the end of the sole after the upper pulling operation.
  • the combination-with means for pulling an upper over a last, or" a hold-down for engaging the margin of the sole of the shoe at the toe end, power operated means operatively connected to said hold-down for moving it lengthwise of the shoe after the upper pulling operation, and a spring for returning the holddown to its foremost position.
  • the combination with means for pulling an upper over a last, of a hold-down for engaging the margin r" the sole of the shoe at the toe end, power operated means for retracting said hold-down lengthwise of the shoe after the upper pulling operation, means for locking the hold-down in retracted position, and means for releasing the hold-down to permit it to be returned to starting position.
  • the combination with means for pulling an upper at the toe end and at opposite sides of a last at one operation including an upper engag ing gripperand means for imparting upper pulling movement to said gripper, of a mem ber for engaging the marginal edge of the sole of the shoeto position it on the last durin the upper pulling operation, and means connected to said member for moving it inwardly in a direction substantially parallel to the plane of the sole after the upper pulling operation;
  • the combination with power operated means constructed and arranged to pull an upper over a last and to come automatically to rest with the upper held under tension, and means for overlaying. and fastening the upper on the margin of the sole upon a subsequent starting of the machine, of means constructed and arranged to engage the marginal edge of the sole and hold it in the correct relation to the last during the upper pulling operation, and additional means automatically operative subsequently to. the upper tensioning period of the cycle of op erations to cause said margin engaging meansto be withdrawn from operative relation to the marginal edge of the sole to permit the upper to be overlaid and fastened.
  • the combination with means comprising separate toe and side grippers for pulling an upper over a last, said grippers being arranged to move inwardly over the sole of the shoe after the upper has been pulled, of members constructed and arranged to engage the margin of the sole at the toe end and at the sides and hold it in the correct relation to the last during the upper pulling operation,'and means for causing said members to be moved out of operative relation to the margin of the sole after the upper has been pulled.
  • the combination with upper gripping means constructed and arranged to pull an upper over a last and then to move inwardly over the sole of the shoe, of means for engaging the marginal edge of the sole to position it relatively to the last, and means automatically operative in time relation to other parts of the machine to cause said positioning means to be withdrawn from engagement with the marginal edge of the sole prior to theinward movement of said upper gripping means.
  • the combination with upper gripping means constructed and arranged to pull an upper over a last and then to move inwardly over the sole of the shoe, of means for engaging the marginal edge of the sole to position it relatively to the last duringfthe upper pulling operation, means for wiping the margin of the upper inwardly over the sole, and means automatically operative independently of said upper gripping means and in time relation to other parts of the machine for withdrawing said margin engaging means from operative relation to the marginal edge of the sole.
  • the combination-with upper pulling means including a toe gripper arranged. to move rearwardly over the sole of the shoe after the upper has been pulled, of a sole edge hold-down member arranged'to engage the marginal edge of the sole at the toe end during'the upper pulling operation, and means constructed and arranged to move said member rearwardly over the sole before the toe gripper moves rear-wardly.
  • the combination with end embracing wipers arranged to be positioned manually against the upper of the shoe, and means for subsequently operating said wipers, of means for engaging the marginal edge of the sole of the shoe at the toe end of the shoe to hold it on the last during the positioning of the wipers, and mechanism arranged to be operated in time relation to the operative movement of the wipers for causing said edge engaging means to be withdrawn from operative posltion.

Description

B.JORGENSEN. MACHINE FOR SHAPING UPPERS TO LASTS. I APPL ICIATIO N FILED. MAY 13, I917- I I 1,379,923, v Patented May 31, 1921 2 SHEETS-SHEET I- B. JORGENSEN. I MACHINE FOR SHAPING UPPERS T0 LASTS.
APPLICATION FILED MAY 1B, 19!?- Patented My 31, 1921.
UNITE P Erica.
BEENHAE T JoEeENSEN, 0E BEVERLY, MASSACHUSETTS, ASSICNCE, BY MESNE ASSIGNMENTS, To UNITED SHOE MACHINERY ConronATIoN, 0E PATERSON, NEW JERSEY, A CORPORATION OF NE JERSEY. I
ACHINE EoE SHAPING urrE E To LASTS.
Specification of Letters Patent. 4 Patent d 31; 1921 Application filed. May 18, 1917. Serial No. 169,557."
T 0 (ZZZ whom it may concern: 7
Be it known that I, BERNHARDT J ORGEN- SEN, a subject of the King of Denmark, residin at Beverly, inthe county of Essex and tate of Massachusetts, have invented certain Improvements in Machines. for Shaping Uppers to Lasts, of which the following description, in connection with the back when the upper is carried inwardly over it. The invention is herein shown in its application to a pulling-over machine including means for lasting the toe portion of the shoe after the upper'pulling operation, but it will be understood that the invention,
in its broader aspects, is not limited to machines for performing both pulling-over and lastingoperations.
When the parts of a shoe are assembled on a last, theinnersole or the-sole of the shoe, hereinafter termed generically the sole, is usually attached to the'bottom of the last at a plurality of points by tacks which are driven through the sole and into the last at a distance from the margin of the sole. Since the'margin of the sole, to a considerable distance inward from the edge of the last, is thus left unattached, there is danger that the margin may be uplifted from the, last by the frictional engagement of the upper or of the pulling over grippers with the edge of the sole during the upper pulling operation, or it may 'be by the action of lasting wipers in their positioning movement relatively to the shoe preparatory to their overwlping movement,
and in the subsequent operation of laying or wiping the upper overthe sole the margin may consequently be turned back in such manner as to prevent the upper from being properly sewed to the sole. This danger is particularly marked in the case of turn shoes, since the soles of such shoes project beyond the edge of the last bottom and are also usually reduced inthickness at the margln to provide a shoulderto which the upper 1s to be sewed, leaving between the shoulder and the edge of thesole a comparatlvely thin portion termed the feather iof the sole.
This invention provides, as an important feature, a novel organization of mechanism for positioning the margin of a solein relation to alast and for causing said positloning means to be withdrawni'to permit the upper to be shaped .over the margin of the sole. Theillustrative construction provides a hold-down for engaging the margin of the sole at the toe and means for withdrawing the hold-downinwardly over the sole 1n a dlrection lengthwise of the sole. Combined with the toe-hold-down, in the illustrative machine, are hold-downs for the ma'rgm of the sole at. the sides of the shoe;
bodiedin a machine comprising upper pulling and fastening means, resides in a novel construction and arrangement ofmeans for positioning the margin of the sole. in rela tion to the last during the upper pulling operation and 'means for withdrawing the positioning means from themargin of the sole to pe'rmit'the operation of the fastening means. As applied to amachine of the'illustrative type, wherein upper pulling and other operations are efiected in different periods or stages of the cycle of movements of themachine, the invention provides, as a further feature, a novel construction and arrangement 'ofpositioningmeans' for engaging the margin of the sole during the upper pulling operation and mechanlsm for effecting a withdrawal of 'sald positlonlng means 1n a later period of the cycle.
' ,The various features ofthe inventiom including certain more important details of construction and combinations of parts, will now be described with reference .to' the ach companying drawings and pointed out'in the claims. I I In the drawings,
Figure 1 is a vieW in side elevation of the head portion of a pulling-over machine including mechanism in which the invention is embodied, the machine having means for lasting the toe end of a shoe,
Fig. 2 is a perspective view of a portion of the machine, illustrating the relation of V the hold-down mechanism to a shoe,
Fig. 3 is a view of a portion of the ma chine in side elevation, and partly in vertical section, illustrating the position of the parts at the end of the upper pulling movement of the grippers, I
Fig. 4 is a view similar to Fig. 3, showing the toe hold-down retracted, and
Fig. 5 shows in detail a portion of the mechanism for controlling movement of the toe hold-down.
The drawings illustrate the application of the invention to a pulling over and lasting machine of a well known type particularly adapted for operation upon turn shoes,
described herein in detail.
The machine has the usual toe gripper 2 and side grippers 4:, these grippers being operated to pull the shoe upper over the last through theaction of updraw levers 6 and 8 to which the respective toe and side grippers are connected. The machine has also a front tacker arm 10 and side tacker arms 12 carrying instrumentalities of the usual construction for laying the upper over the margin of the sole after the upper pulling operation and for fastening the margin of the upper in position on the sole, the front tacker arm in the construction shown carrying wipers 14; which are mounted to swing laterally of the shoe and operated by the inward movementof the front and side tacker arms to wipe the upper into lasted position around the toe end of the shoe. Itwill be understood that the operation of the machine is effected in successive stages, the machine coming to rest at the end of the first stage with the upper under tension to afford opportunity for inspection of the work and, if necessary, adjustment of the upper to position it correctly with reference to the sole and the last, as well as adjustment of the tension under which the upper is held. l/Vhen the machine is started a second time, it causes side clamp arms 16 to swing inward and clamp the shoe firmly at the sides,
these arms being operated by means of a slide 18 to which movement is imparted by a cam 20 on the main cam shaft 22. If the operation of the machine is effected in three stages, the machine will again come to a stop after the clamp arms have moved into engagement with the shoe, and at this time the operator positions the wipers 14: in engagement with the toe end of the shoe in the correct relation to the shoe for movement inward to wipe the upper over the margin of the sole. The toe gripper is then released from the upper, whereupon the gripper is automatically lifted out of the way of the wipers and the tacking mechanism by the usual spring in the gripper operating connections. When the machine is started the third time the front and side tacker arms are swung inwardly to overlay the margin of the upper and to wipe it into lasted position around the toe and fasten it, substantially in the manner explained in said prior Ashton patent, the grippers receiving simultaneously an inward movement over the sole whereby they make way for the inward 0 movement of the overlaying and fastening devices and the side grippers. also serving by such inward movement to overdraw the margin of the upper. During the continued operation of the machine in the final stage of its cycle of operations the parts are all restored to their initial positions. It will be understood that if the operation of the machine is effected in two stages only, the wipers will be positioned in engagement with the upper immediately following the upper tensioning movement of the grippers, and the inward movement of the clamp arms 16 will be followed immediately by the overlaying and the fastening of the upper in the final stage. While the invention in its broader aspects is not limited with respect to the precise number of stops which the machine may make, certain advantages follow the use of the invention in a machine which makes one stop only, the cycle of opto rock the carrier about the shaft 26 in a direction to hold the roll 80 in engagement with the cam. Pivoted on the lower side of the carrier 24 for swinging movement in substantially parallel relation to the plane of the sole are a pair of arms 34 which are normally held by a spring 36 with their front ends projecting outwardly as well as forwardly in such position as to be opposed to the margin of the sole at the opposite sides of a shoe when the shoeis presented to the machine. The margin of the sole at inward pressure of the overlaying wipers and swing inward against the tension of the spring 36. A spring plate 38 is secured t0 the head of the machine and arranged to bear frictionally upon the rear ends of the arms 34, the pressure of the spring upon the arms beingincreased by the downward rocking movement of .the carrier 24 which takes place, as usual, during the upper tensioning movement of the grippers. The purpose of the spring plate 38 is to hold the arms 34 with their front ends swung inward until after the side grippers have been returned to starting position in the finalQstage of the cycle of operations of the machine, thus preventing the grippers from striking the arms. When the holder 24 returns to its starting position the pressure of the spring 38 on the arms is decreased sufiiciently to permit the arms to be swung outward substantially into engagement .with the side grippers by the action of the spring 36.
The means including the arms, 34, herein shown, for positioning the margin of the sole at the sides of the shoe is more fully described and is claimed in a co-pending application of Orrell Ashton, Serial No. 129,214, filed on November2, 1916, and assigned to the assignee' of the present invention.
For carrying out the objects ofthis in- I vention the machine shown is provided further with a. hold-down for engaging and positioning the margin of the sole at the toe endo'f the shoe. This 'hold-down'comprises a plate 40 curved in substantial conformity to-the edge contour of the toe end of the sole and shaped to provide a depending lip for engagement with the feather a of the sole outside of the upper attaching shoulder. The plate 40 is secured to a holder 42 which is pivoted at 44 on a slide 46 mounted in the carrier 24 for movement lengthwise of the shoe. A spring 48 tends to swing the front end of the holder 42 upwardly and a screw 50 which is adjustable in the holder and is arranged to engage the slide 46 serves to determine the elevation of the hold-down 40 with reference to the slide 46 and the arms 34. i
slide 46 insuch manner as to retract'the impart movement 'to'the shaft 26in a dia lug on the'slide 46 and a lug on the'carrier' of the gripper jaws, as shown in Fig. 2, and the hold-down remains in engagement with the'feather of the sole and, in the case of a turn shoe, with that portion of the feather which projects beyond the edge of the last,
permit the w1pers14 to lay the'upper over tened,means is provided for operating the? hold-down from thetoe end of the shoe.
Tothis" end, the slide 46 is providedwith rack teeth 52 which are en aged by a pinion 54 fast on the shaft 26.
6n one endof the shaft 26is a crank arm 56 provided with a ondxcrank arm 68 connected by a link 70 j to'the slide-18' which serves, as hereinbefore "explained, to operate theside clamp arms '16. Movement of the slide 18 toward the right Fig's 1 and-'2) to'cause the clamp arms to be closed against the shoe at the beginning of the second period ofthe cycle of operations'of the machinethus "serves to rection to retract the hold-down. 40 from 'the' position in which it is shown in Fig. 3 to 'the position indicated by Fig.4, this movement being effected against the tension of' a spring 72 which ispositioned between 24 and tends tomove the slide forwardly. The downwardly curving lip of the hold down 40, as shown in Figs. 3 and4, is flared outwardlyon its lower face to permit the hold-down to. slide readily over the shoulder of the sole in its retractive movement. With the hold-down thus retracted, the wiping and tacking instrumentalities are permitted to move inward over the margin of the sole and to perform their functions in the usual manner without interference' by the holdf down.
i In view of the close relation between the hold-down 40 and the toe gripper jaws 1n the normal shoe receiving position of the parts, it is desirable that the gripper jaws, after the operation ofthe machine upon a shoe, shall return to their starting position prior to the return of the hold-down 40 to its foremost position'in' order to avoid danger of interference between the gripper jaws and the hold-down. Means is accordingly provided for maintaining the holddown in its retracted position for a time subsequent to the returnmovement of the slide 18 whereby the clamp arms are caused to release the shoe. To this end, a ratchet f .74 is mounted ,uponsone end of the shaft 26 and a pawl 76 is normally heldlby a spring;
78 in position to engage the ratchet and thus'130 70 until after the upper has been tensioned by the'operatio n; of the grippers.- In orde'rto to hold the shaft 26 in the position to which it is moved by the operation'of the slide 18 for retracting the hold-down. The slot and pin connection between the crank arm 56 and the link 62, will thus permit the return movement of the slide 18 while the holddown is continued in its retracted position by the action of the pawl 7 6 on the ratchet .7 1. ,After the toe grippers have been re turned substantially to their starting .posi tion in the final stage of the cycle of operations, an upwardly extending arm 80 of the pawl 76. is engaged by a tripping member 82 to cause the pawl to release the ratchet 74 and thus permit the return of the holddown 40 which is effected by the action of the spring 72, hereinbefore described, supplemented by the action of a spring 84: which encircles the shaft 26 close to the ratchet 74 and tends to turn the shaft in the direction to move the hold-down forwardly. Conveniently the tripping member 82 is carried by a slide 85 with which machines of the illustrative type are provided for the purpose of imparting advancing and retracting movement to the heel rest 86 of the machine,the retracting movement of the heel .rest taking place at a time sufiiciently late in the cycle of operations. to permit the use of the slide for operating the tripping member inthe manner above described. As the hold-down is returned to its foremost position by the action of the springs, the pin 58 engages the link 62 at one end of the slot 60 to limit the forward movement of the holddown. A turnbuckle 88 is provided for varying the effective length of the link 62, and by this means the limit of the forward movement of the hold-down may be varied.
It will be evident'from the foregoing description that the arms 34 and the member 40 serve to insure the correct location of the margin of the sole with reference to the last at the sides and the toe end of the shoe respectively, and that these members and the carrier 24 constitute a sole rest for the shoe with which the sole is engaged when the shoe is presented to the machine, the hold-down member 40, moreover, serving to determine the lengthwise position of the shoe in the machine. With the shoe presented as indicated in Fig. 2 and the margin of the upper positioned within the jaws of the side and toe grippers, the machine is started by the actuation of the usual clutch controlling treadle and the grippers are thus caused to pull the upper over the last, the carrier 24: being rocked simultaneously by the cam 28 in a direction to depress the last within the upper through the pressure of the members 34: and 40 on the sole. The machine having come to a stop with the upper under tension, the operator makes any necessary adjustment of the position of the upper on the last and of the tension of the upper in the customary manner. The operator then releases the toe gripper from engagement with the upper and positions the wipers 1% in the correct relation to the shoe for closing movement to wipe the upper over the margin of the sole, the toe hold-down remaining in position to prevent any upturning of the edge of the sole by this positioning movement of the wipers. He then starts the machine again whereupon the side clamp arms 16 are swung inward, the toe hold-down being simultaneously moved rearwardly, and the arms 10 and 12 are moved'inward to lay the upper over the margin of the sole at the sides of the shoe and to cause the wipers 1 1 to wipe the upper over the sole at the toe end, the tacking instrumentalities being operated also to fasten the margin of the upper in position upon the bottom of the sole. During the inward movement of the side arms 12 the members 34: yield inwardly as hereinbefore explained. Following the tacking of, the shoe, the parts of the machine are returned to their starting positions, the return of the toe hold-down 40 being delayed by the action of the pawl 76 on the ratchet 74: and the return of the side hold-down members 3 L being also delayed by the action of the spring plate 38 on these members, in order to avoid any possibility of injury to the different hold-down members through engagement of the grippers therewith during the return of the latter to their starting positions. Finally, the pawl 7 6 is released from the ratchet by the action of themember 82 and the hold-down 40 is advanced substantially into engagement with the toe grippers, the return of the side hold-downs 3 1 also being effected by the spring 36 as soon as the pressure of the spring plate 38 there on is relieved by the upward rocking movement of the carrier 2 Although the hold-down 10 and its op erating means have been described herein as arranged for operation upon the margin of the sole at the toe end of the shoe, it will be understood that the invention in its broader aspects is not limited in respect to the particular portion of the margin of the sole which the hold-down is adapted to engage- Having described the invention, what 1 claim as new anddesire to secure by Letters'Patent of the United States is:
1. In a pulling-over machine, the combination with means for pulling an upper at the toe end and at opposite sides of a last at one operation including a gripper for engaging the upper at the toe end of the last and means for operating said gripper to pull the upper, of means for engaging the margin of the shoe sole to position it at the toe end of the last during the upper pulling operation, and means operatively connected to said; margin engaging means for moving it in a direction lengthwise of the sole after the upper has been tensioned.
2. In a pulling-over machine, the combination with means for pulling an upper at the toe end of a last and for then holding the upper'under tension with the machine at rest, and means for laying the upper over the margin of a sole on the last upon a subsequent starting of the machine, of means for holding the margin of the sole in position on the last at the toe end during the upper pulling operation, and means for causing said holding means to be moved in a direction lengthwise of the sole in a period of the cycle of operations subsequent to that in which the pulling of the upper is effected.
3. In a pulling-over machine, the combination with a gripper for pulling-an upper at the toe end of a last and end embracing wipers supported substantially in front of the toe end of the shoe to swing laterally of the shoe in wiping engagement with the upper, of means for holding the margin of the sole in position at the toe end during the upper pulling operation, and power operated means for moving said holding means inwardly from the margin of the sole to permit the operation of the wipers.
4c. In a machine of the'class-described, the combination with means for pulling an upper over a last at a plurality of points at one operation of the machine, means for laying the upper overthe margin of' a sole on the last and means for fastening the upper to the sole, of means for engaging'the margin of the sole to position'it on the last during the upper pulling operation,- and mechanism connected to said positioning means and operative in time relation to other parts of the machine for causing said positioning means to be moved away from the margin of the sole to permit the operation of the fastening means.
combination with means for pulling an upper over the toe and the opposite sides of a last and means for fastening the upper on the margin of a sole on the last at a plural ity of points substantially simultaneously, of means for engaging the margin of the sole to position it on the last, and means connected to said positioning means and operated in time relation to the fastening means for moving said positioning means away from the margin of the sole after the upper pulling operation to permit the operation of the fastening means. 7 I v 6. In a pulling-over machine,'the combination with means for pulling an upper on a last and for then holding the upper under tension with the machine at rest, and means for fastening the upper to the sole upon a subsequent starting of the machine, of means for engaging the margin of the sole to posl- 5. In a machine of the class described, the
tion it in relation to thelast, and means connected to said positioning means and operative after: the machine has been. started subsequent to the upper tensioning period of the cycle of operations for withdrawing said positioning means from the margin of the sole to permit the operation of the 'fase tening means.
7 In a pulling-over machine, the co-mbiof the sole to position it in relation to the last, and means operative after the machine has been started subsequent to the upper tensioning period of the cycle of operations for moving said positioning means inwardly from the feather of the sole;
- 8. In a pulling-over machine, the combi;
nation with separate toeand side grippers and means for. operating said grippers to pull an upper on a last, of members for .en-
gaging the margin of a sole at the toe and the opposite sides of the last to prevent the:
'margin of the sole from being lifted from the last during the upper pulling operation, and-means for causingsaid sole engaging members to be moved relatively'to the grip-' pers in directions inward from the margin. of the 'sole after the upper pulling operatlon. I
9. In a pulling-over machine, the combination with a toe gripperand power means for operatingsaid grippento pull an upper on alast, of a'hold-down for engaging the marginal edge of the shoe sole at the toe end during the upper pulling operation,
means for-fastening the margin of the upper to the sole, and automatic means for moving said hold-down inwardly from the margin of the sole to permit the upper to be fastened to the sole. V I r r I 10. In a pulling-over machine, the combination with separate grippers constructed and arranged toengage an-upper respectively at the toe end andat Opposite sides of the forepart, means for operating said grip:
pers to pull the upper, and meansfor laying the upper over the margin of the'shoe sole,- of hold-downs for engaging the margin ofthe sole at the toe and at the sides to position the margin relatively to the last during the upper pulling operation, the machine being constructed to cause said hold-downs; to be; withdrawn from the margin-of the sole in s feather of the shoe sole which projects beyond the edge of the last to prevent the marginof the sole from being lifted from the last during the upper pulling operation, overlaying and fastening means and means for moving said hold-down inwardly from 20 the edge of the sole in a direction substantially parallel to the plane of the sole to permit the upper to be fastened to the margin of the sole.
13. In a pulling-over machine, the combi nation with means for pulling an upper over a last and side clamp arms movable into engagement with'the sides of the shoe after the upper pulling operation, of means for engaging the margin or" the shoe sole to position it on the last during the upper pulling operation, and means for retracting said sole engaging means from the margin of the sole during the movement of said clamp arms to shoe engaging position.
14. In a pulling-over machine, the com bination with means for pulling an upper over a last, side clamp arms, and mechanism for moving said arms inwardly into engagement with the shoe after the upper pulling operation, of a hold-down for engaging the margin of the shoe sole to position it on the last, and connections between the hold-down and said mechanism for retracting the holddown from the margin of the sole during the inward movement of the clamp arms.
15. In a pulling-over machine, the combination with means for pulling an upper over a last, side clamp arms, and operating mechanism for moving said clainparms inwardly into engagement with the shoe after the upper pulling operation, of a hold-down for engaging the margin of the shoe sole to position it on the last during the upper pulling operatiomand means for causing said hold-down to. be retracted from the margin of the sole upon a movement of said mecha nism to operate the clamp arms.
I 16. In a pullingover machine, the combination with means for pulling an upper over last, side clamp arms, and operating mechanism for moving said arms inwardly into engagement with the shoe, of a holddown for engaging the margin of the shoe sole atthe toe end, and means connecting the hold-down to said operating mechanism for the clamp arms for moving the hold-down lengthwise of the shoe.
1?. In a pulling-over machine, the combination with means for pulling an upper over a last and means for laying the upper own the margin of a sole on the last, of a holddown for engaging the margin of the sole at the toe end and hold-downs for engaging the margin at the sides during the upper pulling operation, the side hold-downs being mounted to permit them to yield inwardly from the margin during the operation of the overlaying means, and power operated means for withdrawing the toe hold down from the margin of the sole.
18. In a pulling-over machine, the combi nation with upper pulling means, of a sole rest for the shoe comprising arms for positioning the margin of the sole at opposite sides o1 the shoe, said arms extending along the sole and being yieldable inwardly from the sides of the shoe in a plane substantially parallel to the plane of the sole, a hold-down for engaging the toe end of the sole during the upper pulling operation, and power operated means for retracting said toe holddown from the end of the sole after the upper pulling operation.
19. In a pulling-over machine, the combination-with means for pulling an upper over a last, or" a hold-down for engaging the margin of the sole of the shoe at the toe end, power operated means operatively connected to said hold-down for moving it lengthwise of the shoe after the upper pulling operation, and a spring for returning the holddown to its foremost position.
20. In a pulling-over machine, the combination with means for pulling an upper over a last, of a hold-down for engaging the margin r" the sole of the shoe at the toe end, power operated means for retracting said hold-down lengthwise of the shoe after the upper pulling operation, means for locking the hold-down in retracted position, and means for releasing the hold-down to permit it to be returned to starting position.
21. In a pulling-over machine, the combination with a toe gripper and means for operating said gripper to pull an upper on a last, of a hold-down for engaging the margin of the toe end of the sole of the shoe, means for retracting said hold-down from the margin of the sole after the upper pulling operation, a spring for returning the hold-down to its foremost position, and means for locking the hold-down to prevent its return movement until after the toe gripper has been returned substantially to starting position. 7
22. In a pulling-over machine, the combination with means for pulling an upper over a last, of a hold-down for engaging the margin otthe sole of the shoe during the upper pulling operation, means for retractoperation.
ing the hold-down from the margin of the sole, pawl and ratchet means for retaining the hold-down win retracted position, and means for releasing the hold-down to permit its return to starting position. V
23. In a machine of the class described, the combination with means for working an upperover a last, of a member'for engaging the marginal edge of the sole of the shoe to position it relatively to the last, meansfor withdrawing said member from operative position, a spring-for returning the member to' operative position, and 'a tripping device for rendering said spring operative. 1
24. In a machine of the class described, the combination with means for working an upper over a last, of a member for engaging the marginal edge of the sole of the shoe'to position it relatively to the last, means for withdrawing said member from. operative position, a spring tending to return the member to operative position, locking means for retaining the member against the tension of said spring, and mechanism for causing said locking meansto release the member. l
25. In a pulling-over machine, the combination with means for pulling an upper at the toe end and at opposite sides of a last at one operation, including an upper engag ing gripperand means for imparting upper pulling movement to said gripper, of a mem ber for engaging the marginal edge of the sole of the shoeto position it on the last durin the upper pulling operation, and means connected to said member for moving it inwardly in a direction substantially parallel to the plane of the sole after the upper pulling operation; 1
26. In a pulling-over machine, the combination with a plurality of grippers for engaging an upper on a last and means for effecting relative movement of the last and said grippers to pull the upper, said grippers being 'movable inwardly over the bottom of the last after the upper pulling operation, of a member for engaglng the marginal edge ofthe sole of the shoe to position it on the last during the upper pulling operation, and means connected to said member for imparting to it a movement inward over the sole a ter theupper pulling 27. In a machine of the class described, the combination with means for pulling an upper on a last and for then holding the upper under tension with the machine at rest, and means for working the marginof the upper over the sole of the shoe on the bottom of the last upon a subsequent starting of the machine, of means for engaging the margin of the sole to position it on the last during the upper pulling operation, and mechanism connected to said'margin engaging means for imparting to said means a movement inward in a direction substantially parallel to the-plane of the sole :in time relation to the movement of other parts of the machine. i V 28. In a machine of theclass described, the combination with upper pulling means, and end lasting wipers supported substan tially opposite to the toe end of the shoe for swinging movement laterally of the shoe, of members for engaging'the margin of the sole of the shoe at the toe and at opposite sides of the forepart during the upper pulling operation to hold the marginrof the sole in position 'on the last, the machine being constructed to cause said members to be withdrawn from themargin of the sole in time relation to the operation of the wipers.
29. In a machine of the class described, the combination with upper pulling means and end embracing wipers, of means for operating said wipers to last the toe end of theshoe, a member for engaging themar ginal edge of the sole of the shoe at the toe end to position it on the last duringithe upper pulling operation, and means "for moving said member lengthwise of the shoe after the upper pulling operation. v
, 30.In avpullmg-over machine, the com-- bination with grippers forengaging an upper at the toe and at opposite sides'of a 1 last and means for imparting upper pulling movement to said grippers, of a member'for engagingthe marginal edge ofthe sole, of
the shoe at the toe end of the last to hold it in position duringthe upper pulling operation, and means operatively connected to said member for moving it backward along the surface ofthesole to withdraw it from operative position.-- t
- 81. In a machine of the class described, the-combination with means for'po'siti'oning. an upper and a last, end embracing (wipers and means for operatingsaid wipers,.of a member for engaging the marginal edge of the sole of the shoenat the toe end to position it'relatively to the last and power-operated means for causing'said member to'be moved rearwardly from the toeend ofthekshoe matically operative independently of said overlaying means to cause said marginem gagin means to be moved lnwardly over the so e. 7
33. In a machine of the class described, the combination with power operated means constructed and arranged to pull an upper over a last and to come automatically to rest with the upper held under tension, and means for overlaying. and fastening the upper on the margin of the sole upon a subsequent starting of the machine, of means constructed and arranged to engage the marginal edge of the sole and hold it in the correct relation to the last during the upper pulling operation, and additional means automatically operative subsequently to. the upper tensioning period of the cycle of op erations to cause said margin engaging meansto be withdrawn from operative relation to the marginal edge of the sole to permit the upper to be overlaid and fastened.
34. In a machine of the class described, the combination with means comprising separate toe and side grippers for pulling an upper over a last, said grippers being arranged to move inwardly over the sole of the shoe after the upper has been pulled, of members constructed and arranged to engage the margin of the sole at the toe end and at the sides and hold it in the correct relation to the last during the upper pulling operation,'and means for causing said members to be moved out of operative relation to the margin of the sole after the upper has been pulled.
35. In a machine of the class described, the combination with a gripper and means for operating it to pull an upper over the toe end ofa last and to move it subsequently inward over the sole of the shoe, of a mem ber constructed and arranged to engage the marginal edge of the toe end of the sole and hold it in the correct relation to the last during the upper pulling operation, and means for causing said member to be withdrawn from operative relation to the. marginal edge of the sole. after the upper has been pulled to permit the marginof the upper to be overlaid and fastened.
36. In a machine of the class described, the combination with upper gripping means constructed and arranged to pull an upper over a last and then to move inwardly over the sole of the shoe, of means for engaging the marginal edge of the sole to position it relatively to the last, and means automatically operative in time relation to other parts of the machine to cause said positioning means to be withdrawn from engagement with the marginal edge of the sole prior to theinward movement of said upper gripping means. Y
37. In a machine of the class described, the combination with upper gripping means constructed and arranged to pull an upper over a last and then to move inwardly over the sole of the shoe, of means for engaging the marginal edge of the sole to position it relatively to the last duringfthe upper pulling operation, means for wiping the margin of the upper inwardly over the sole, and means automatically operative independently of said upper gripping means and in time relation to other parts of the machine for withdrawing said margin engaging means from operative relation to the marginal edge of the sole.
38. In a machine of theclass described, the combination with means for working the margin of an upper inwardly over a sole on a last, of means for engaging the marginal edge of the sole to position it relatively to the last, and means automatically operative in time relation to other parts of the machine to cause said positioning means to be moved inwardly from the edge of the sole prior to the inward movement ofsaid overworking means.
89. In a machine of the class described, the combination with means for pulling an upper over a last, and means movable inwardly over the sole of the shoe to overlay and then to fasten the margin 'of the upper, of means for engaging themarginal edge of the sole to position it relatively to the last during the upper pulling operation, and means automatically operative in time rela tion to other parts of the machine to cause said positioning means to be withdrawn from engagement with the marginal edge of the sole prior to the inward movement of said overlaying and fastening means.
40. In a machine of the class described, the combination-with upper pulling means including a toe gripper arranged. to move rearwardly over the sole of the shoe after the upper has been pulled, of a sole edge hold-down member arranged'to engage the marginal edge of the sole at the toe end during'the upper pulling operation, and means constructed and arranged to move said member rearwardly over the sole before the toe gripper moves rear-wardly. 1
e1. In a machine of the class described, the combination with means for pulling an upper over a last at the toe and the opposite sides of the forepart substantially simultaneously, means for laying the margin of the upper inwardly over the sole of the shoe, and means constructed and arranged to fasten the margin of the upper to the sole after it has been overlaid, of means for engaging the marginal edge of the sole to position it relatively to the last during the upper pulling operation, and means automatically operative in time relation to other parts of the machine to cause said positioning means to be withdrawn from operative relation to the marginal edge of the sole.
42. In a machine of the class described, the combination with means for pulling an upper over a last, means for wiping the margin of the upper inwardly over the sole of the shoe, and means constructed and arranged to fasten the margin of the upper after it has been wiped inwardly, of means for engaging the marginal edge of the sole to position it relatively to the last during the upper pulling operation, and mechanism connected to said positioning means and operative independently of said upper pulling means and in time relation to other parts of the machine to cause said positioning means to be withdrawn from operative relation to the marginal edge of the sole. 7
43. In a machine of the class described, the combination with means for pulling an upper over a last, means for laying the upper over the margin of a sole on the last and means for fastening the upper to the sole, of means for engaging the margin of the sole to position it on the last during'the upper pulling operation, and power operated means for moving said positioning means away from the margin of the sole to permit the operation of the fastening means.
a4. In a machine of the class described, the combination with end embracing wipers arranged to be positioned manually against the upper of the shoe, and means for subsequently operating said wipers, of means for engaging the marginal edge of the sole of the shoe at the toe end of the shoe to hold it on the last during the positioning of the wipers, and mechanism arranged to be operated in time relation to the operative movement of the wipers for causing said edge engaging means to be withdrawn from operative posltion.
45. In a machine of the class described, the combination with means for pulling an upper on a last and for then holding the upper under tension with the machine at rest,
end embracing wipers arranged to be posi-' tioned manually against the upper while the machine is at rest, and means for operating the wipers when the machine is again started, of means for engaging the marginal edge of the sole'of the shoe at the toe end of the shoe to position it on the last during the upper pulling and wiper positioning operations, and mechanism operative in time relation to other parts of the machine forcausing said edge engaging means to bewithdrawn from operative position.
In testimony whereof I have signed my name to this specification.
BERNHARDT J ORGENSEN.
US169557A 1917-05-18 1917-05-18 Machine for shaping uppers to lasts Expired - Lifetime US1379923A (en)

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