US3487487A - Shoe lasting machine trimming device - Google Patents

Shoe lasting machine trimming device Download PDF

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Publication number
US3487487A
US3487487A US788899A US3487487DA US3487487A US 3487487 A US3487487 A US 3487487A US 788899 A US788899 A US 788899A US 3487487D A US3487487D A US 3487487DA US 3487487 A US3487487 A US 3487487A
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US
United States
Prior art keywords
distributor
shoe
cutting edges
machine
last
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
US788899A
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English (en)
Inventor
Michael J Fino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Emhart Enterprises Corp
USM Corp
Original Assignee
USM Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by USM Corp filed Critical USM Corp
Application granted granted Critical
Publication of US3487487A publication Critical patent/US3487487A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D21/00—Lasting machines
    • A43D21/16—Lasting machines with lasting pincers and toe- or heel-embracing wipers
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D21/00—Lasting machines
    • A43D21/12—Lasting machines with lasting clamps, shoe-shaped clamps, pincers, wipers, stretching straps or the like for forming the toe or heel parts of the last
    • A43D21/125—Lasting 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
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D21/00—Lasting machines
    • A43D21/18—Lasting machines with lasting pincers and straight-acting wipers, also for forming the shank portions of shoes

Definitions

  • This invention relates to a shoe lasting machine having mechanism cooperating with upper wiping means for evenly distributing the margin of a shoe upper as it is wiped heightwise about the forepart of a last and inwardly over the last bottom and for trimming a uniform thickness from the upper as it is so wiped.
  • the machine is provided with a distributor having cutting edges, the distributor being mounted for universal adjustment so the cutting edges rnay be accurately oriented with a wiping plane. Since the distributors must be changed frequently for different styles the universal adjustment greatly facilitates such change without tedious and costly fitting of the distributors.
  • the cutting edges are straight to facilitate manufacture and resharpening and are formed on a plurality of flat bars secured to the distributor.
  • fluid pressure means yieldingly moves the distributor toward the wiper means in the machine and against an adjustable stop which determines the location on the upper margin where skiving commences.
  • An adjustable abutment also determines the thickness to which the upper is ski-ved.
  • FIG. 1 is a side elevation of a typical machine embodying the present invention with portions of the casing and frame broken away to illustrate the principal operating mechanisms;
  • FIG. 2 is a front elevation of the distributor skiving mechanism
  • FIG. 3 is a plan view of the mechanism shown in FIG. 2;
  • FIG. 4 is a perspective view of the mechanism shown in FIGS. 2 and 3.
  • FIG. 1 a typical machine in which the invention may be embodied, the machine shown being generally similar to that disclosed in U.S. Patent 3,164,- 852.
  • the general operation of the machine will be described herein only briefly for sufficient understanding of the invention and if desired reference may be had to said patent for a complete description of the various operating instrumentalities of the machine.
  • the machine includes a shoe rest 2 (FIG. 1) which supports the bottom of a last L on which an upper is loosely assembled to position the last heightwise as well as to support it against the action on the upper of a toe gripper 4 and side grippers 8.
  • a shoe rest 2 FIG. 1
  • the distributor also acts to spread the upper material evenly as it is wiped heightwise around the forepart and widthwise over the bottom of the shoe by a pair of forepart wipers 14, only one of which is seen in FIG. 1.
  • the wipers are carried on a head 16 pivoted for heightwise swinging movement in two stages, Initially the head 16 is in an elevated position so that the last may be placed on the support 2 and the margin of the upper inserted into grippers. After the grippers exert a preliminary tension on the upper, the wiper head is swung down to a gaging position as seen in FIG. 1 where the outline of the wipers overlie the outline of the last and act as a visual gauge to enable the operator to determine whether the upper is properly located on the last. Also at this time a heel clamp 30 is moved against the heel end of the shoe. After the upper is properly located on the last the head 16 is moved further down from the position shown in FIG. 1 to wipe the tensioned upper heightwise about the forepart of the last and thereafter inwardly over the last bottom to complete the lasting of the forepart of the shoe.
  • the distributor 10 clamps the upper against the bottom surface of the wipers to maintain the tension on the upper as well as to spread the margin of the upper evenly as it is wiped.
  • the grippers 4 and 8 are released and the distributor then acts to maintain the tension on the upper as it is wiped. Also at this time the distributor acts to skive excess material, such as lining and box toe material, from the margin of the upper.
  • the distributor 10 (FIGS. 2-4) is provided with cutting edges 20 which are formed on bars 22 secured to the distributor, the bars being straight so that the cutting edges are inexpensively manufactured and resharpened.
  • the distributor is provided with a tang 24 which is loosely received in a T-shaped slot in a holder 26 and is pivotally secured within the holder by a screw 28.
  • the holder in turn is mounted on trunnions 30 which extend through hollow screws 32 threaded at opposite sides of the holder in a block 34.
  • the block also is provided with a pair of adjusting screws 36 (only one of which is seen in FIG. 2) adapted to engage the front and rear face of the holder 26 for adjustment about the trunnions 30 to orient the cutting edges 20 with the inwiping plane of the wipers extending lengthwise of a shoe in the machine.
  • the block 34 is further provided with adjusting screws 38- which engage side surfaces of the tang 24 for pivotally adjusting the distributor about the screw 28 thereby orienting the cutting edges 20 with the inwiping plane of the wipers extending widthwise of the shoe.
  • the distributor By adjusting the sleeve screws 32, the distributor also may be bodily adjusted widthwise of the shoe.
  • the cutting edges 20 are oriented so as to be generally parallel to the underside of the wipers 14 when the wipers are in their lowermost inwiping position.
  • the block 34 has formed thereon a depending cylindrical tang 40 (FIG. 2) which is received in a bore 42 of a member '44.
  • the member receives a pin 46 which extends through a cross bore 48 in the tang 40 to secure the block 34 on the member 44.
  • the pin 46 is provided with a handle 50 by which the pin 46 may be withdrawn for removal of the block 34, there being provided a fitting 52, not shown in detail, to secure the handle 50 and pin 46 in the position shown.
  • the member 44 is carried by bolts 53 on the ends of four links 54 which at their opposite ends are pivotally mounted by bolts 55 on a frame 56.
  • the frame 56 is provided with guideways 58 which receive guide bars 60 of a frame 62 which is rigidly secured to upright posts 64 which form part of the frame of the machine. After adjustment lengthwise of the shoe to locate the distributor properly, the frame 56 is locked to the frame 62 by a set screw 63.
  • the member 44 and the distributor carried thereby is moved heightwise into operating position while maintaining the orientation of the cutting edges, by a piston and cylinder device 66.
  • the lower end of the cylinder is secured to the machine frame and the upper end of a piston rod 68 of the device is pivotally secured to the member 44.
  • the frame 56 is provided with an adjustable stop 70 threaded into a lug 72 (FIG. 2) of the frame.
  • the underside of a head of the stop is engaged by one of the links 54 thus limiting the upward movement of the member 44 and hence also the initial position of the distributor and cutting edges 20 in respect to the shoe support 2.
  • the member 44 is also provided with an abutment screw 74 (FIGS.
  • the adjustment of the screw 70 determines the location of the distributor above the shoe support as well as the point at which the wipers 14 press the upper against the cutting edges 20.
  • the adjustment of the abutment screw 74 determines the depth of penetration of the cutting edges 20 into the underside of the upper since the distributor is moved downwardly with the wipers after engagement of the head 16 with the abutment screw 74.
  • the point on the upper margin at which the skiving commences may be varied; and that by adjusting the abutment screw 74, the depth of penetration of the cutting edges may be varied and hence also vary the thickness of the material skived from the upper margin. Since the cutting edges 20 of the distributor are oriented accurately with the inwiping plane of the wipers 14 by means of the universal adjustment above described, it should be apparent that the material remaining on the upper margin after skiving will be of uniform thickness when wiped over the shoe bottom and attached to an insole on the bottom of the last by adhesive or other means.
  • a shoe lasting machine having a support for a last with an upper loosely assembled thereon, means for initially tensioning the upper about the forepart of the last on the support, wiper means engageable with the tensioned upper, means for causing relative movement between the wiper means and the support whereby the tensioned upper is wiped heightwise about the forepart of the last and inwardly over the last bottom, and a distributor extending about the forepart of the last and cooperable with the wiper means to maintain the tension on the upper as it is wiped; the improvement comprising, a member on which the distributor is fixed, a frame on which the member is mounted for movement relative to the support and wiper means, an adjustable stop on the frame limiting the movement of the member to determine an initial position of the distributor with respect to the support, said distributor being provided with cutting edges which when the distributor is in said initial position penetrate one surface of the tensioned upper during the heightwise relative movement between the wiper means and the support, and an adjustable abutment on the member engaged by the wiper means during its heightwise
  • a machine according to claim 1 in which the distributor is mounted on the member for universal adjustment for orienting the cutting edges with the plane of relative inward movement of the wiper means.
  • a machine according to claim 1 in which the distributor is mounted in a holder for universal adjustment for orienting the cutting edges with the plane of relative inward movement of the wiper means and the holder is removably mounted on the member.
  • a machine in which fluid pressure means is provided to move the member against the stop, said fluid pressure means being yieldable to permit movement of the member by the wiper means when engaged with the abutment.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US788899A 1969-01-03 1969-01-03 Shoe lasting machine trimming device Expired - Lifetime US3487487A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78889969A 1969-01-03 1969-01-03

Publications (1)

Publication Number Publication Date
US3487487A true US3487487A (en) 1970-01-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
US788899A Expired - Lifetime US3487487A (en) 1969-01-03 1969-01-03 Shoe lasting machine trimming device

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US (1) US3487487A (enExample)
GB (1) GB1229386A (enExample)
ZA (1) ZA7019B (enExample)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020571A (en) * 1959-05-18 1962-02-13 United Shoe Machinery Corp Lasting machines
US3076209A (en) * 1961-05-19 1963-02-05 United Shoe Machinery Corp Toe lasting machines
US3309721A (en) * 1966-05-05 1967-03-21 Jourdan Charles Georges Machines for lasting the toe ends of shoes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020571A (en) * 1959-05-18 1962-02-13 United Shoe Machinery Corp Lasting machines
US3076209A (en) * 1961-05-19 1963-02-05 United Shoe Machinery Corp Toe lasting machines
US3309721A (en) * 1966-05-05 1967-03-21 Jourdan Charles Georges Machines for lasting the toe ends of shoes

Also Published As

Publication number Publication date
GB1229386A (enExample) 1971-04-21
ZA7019B (en) 1971-06-30

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