US3659301A - Footwear with method and device for its manufacture - Google Patents

Footwear with method and device for its manufacture Download PDF

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Publication number
US3659301A
US3659301A US34003A US3659301DA US3659301A US 3659301 A US3659301 A US 3659301A US 34003 A US34003 A US 34003A US 3659301D A US3659301D A US 3659301DA US 3659301 A US3659301 A US 3659301A
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US
United States
Prior art keywords
last
sole
manufacture
mold
shoe
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
US34003A
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English (en)
Inventor
Horace R Auberry
Anton Liebscher
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.)
Ro Search Inc
Original Assignee
Ro Search Inc
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 Ro Search Inc filed Critical Ro Search Inc
Application granted granted Critical
Publication of US3659301A publication Critical patent/US3659301A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/0009—Producing footwear by injection moulding; Apparatus therefor
    • B29D35/0018—Moulds
    • B29D35/0045—Sealing means for the mould cavity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/0054—Producing footwear by compression moulding, vulcanising or the like; Apparatus therefor
    • B29D35/0063—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/0054—Producing footwear by compression moulding, vulcanising or the like; Apparatus therefor
    • B29D35/0063—Moulds
    • B29D35/009—Sealing means for the mould cavity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/06—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/065—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising by compression moulding, vulcanising or the like

Definitions

  • FOOTWEAR WITH METHOD AND DEVICE FOR ITS MANUFACTURE [72] Inventors: Horace R. Auberry; Anton Liebscher, both of Waynesville, NC.
  • ABSTRACT refers to the manufacture of shoes with uppers lasted by pulling a string secured to the lasting margin of the upper. Improvements are presented which reduce costs of manufacture especially if the sole is molded directly to the upper.
  • the method of manufacture includes use of a last deformed to obtain preselected location of the lasting margin and to prevent the formation of undesirable spew.
  • the lasting string is secured to the lasting margin of the upper together with a welt strip, preferably by a single stitching.
  • the upper is then placed upon a last with stops on the sole surface of said last, which might be a row of pins.
  • the lasting string is then tightened until it and the lasting margin abuts the pins. This eliminates the need for skilled workers and assures that no overlasting occurs.
  • a sole comprising elastomeric material is to be molded directly to the upper, it is preferred to provide a continuous rim insideof the feather edge of the last, which then not only serves as a stop to prevent overlasting, but also as a sealing wall to prevent the escape of elastomeric material into the interior of the shoe.
  • the open groove in the sole can be filled. It is further preserred to create the rim by providing in the last a retractable sole plate, which projects inwardly of the feather edge of the last into the sole space.
  • the sole plate of the last might be retracted without removing the last from the mold so as to permit the formation of a porous pillow inside of the sole.
  • Such retractable plate might be at least partially replaced by a membrane.
  • an inside stop for the lasting margin allows the use of a completely prefinished welt, be it leather, rubber, etc. which in the mold will be touching the sidewall of the mold.
  • No elastomeric material, be it rubber or other elastomeric substance will penetrate between the outside of the welt and the mold wall and there will be no need for buffing or other finishing of the sole edge.
  • the deformation of the last for sealing purposes is useful not only for the prevention of spew on the inside of the sole, but can be provided also for the outside of the shoe.
  • the invention provides a slight projection outwardly on the outside of the last above the feather edge thereof.
  • the lip of the sidewall of the mold is arranged slightly above said projection so that the material of the upper is squeezed between said lip and said projection.
  • the projection might also be created by providing a recess in the last. After a removing of the finished shoe from the last the resilency of the upper will straighten the curveature existing in the upper and no inconvenience will be experienced by the wearer of the shoe. This arrangement is useful for shoes with high foxing such as basketball shoes.
  • FIG. 1 a cross section of a shoe according to the invention
  • FIG. 2 shows also in high foxing.
  • FIGII shows the upper l on the last 2.
  • the mold last has a recess 6 into which a last sole plate 7 can be withdrawn.
  • the sidewalls 8 of the mold cavity with the lip 9 closes as usual by a sideways movement (paralled to the sole surface).
  • a bottom plate 10 is used to mold the outer sole shell.
  • the last sole plate 7 is withdrawn into the recess 6 so that the rubber mix at the inner part of the sole can expand and form a pillow.
  • the edge 12 of the last sole plate before it is withdrawn serves during lasting as a stop for the inner edge of the lasting margin and prevents any overlasting and destortion of the upper.
  • the spacing between the stop 12 and the inner wall of the side from 8 can be selected to correspond exactly to the width of prefinished welting thereby assuring that no sole material will penetrate between the mold sidewall and the welt. No bufiing or other finishing of the sole edge will then be needed.
  • FIG. 2 shows a similar arrangement with a last which has not only a deformation on its sole surface to act as stop and sealing surface, but also is deformed on the outside corresponding to the upper edge of the desired foxing.
  • the deformation is a recess 14 covered by the upper 1.
  • a mold last for carrying a shoe upper while molding a sole of elastomeric material directly to the bottom margin of said upper, said last having an open groove formed in its peripheral side surface for receiving a deformation of an upper therein, said groove being located above the plane of the sole surface of the last and along a line corresponding with the upper edge of the junction of the elastomeric material with the upper placed upon the last.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US34003A 1970-05-04 1970-05-04 Footwear with method and device for its manufacture Expired - Lifetime US3659301A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3400370A 1970-05-04 1970-05-04

Publications (1)

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US3659301A true US3659301A (en) 1972-05-02

Family

ID=21873717

Family Applications (1)

Application Number Title Priority Date Filing Date
US34003A Expired - Lifetime US3659301A (en) 1970-05-04 1970-05-04 Footwear with method and device for its manufacture

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US (1) US3659301A (tr)
TR (1) TR17260A (tr)
ZA (1) ZA712884B (tr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2450538A1 (de) * 1973-10-29 1975-04-30 Ro Search Inc Schuhwerk und verfahren der herstellung
US3913160A (en) * 1973-04-12 1975-10-21 Herbert Funck Method for the production of cushioned-sole shoes and last to perform the method
GB2202423A (en) * 1987-03-14 1988-09-28 A & M Bolton Ltd Grooved last for footwear manufacture
US4817305A (en) * 1986-11-27 1989-04-04 Klockner Ferromatik Desma Gmbh Last for shoe shafts which has a generally T-shaped groove and a spring-biased generally T-shaped profile band therein
US5152025A (en) * 1988-07-29 1992-10-06 Sergio Hirmas Method for manufacturing open-heeled shoes
US5891484A (en) * 1996-12-21 1999-04-06 Klockner Desma Schuhmaschinen Gmbh Device for manufacturing sandals
US20110000101A1 (en) * 2009-07-01 2011-01-06 Wolverine World Wide, Inc. Sole construction and related method of manufacture
IT202100005381A1 (it) * 2021-03-08 2022-09-08 Stemma S R L Metodo per la produzione di calzature tramite stampaggio e stampo per l’attuazione di tale metodo

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US148189A (en) * 1874-03-03 Improvement in sewing-lasts
US1688466A (en) * 1924-09-18 1928-10-23 United Shoe Machinery Corp Last
US1842719A (en) * 1930-03-17 1932-01-26 Dunker Henry Christian Louis Device for obtaining alpha sharp cutting of the rubber goloshing of cloth shoes or the like footwear provided by pressing with wholly or partly rubber-covered sides
US2082196A (en) * 1934-12-06 1937-06-01 Int Shoe Co Shoe last
US2641004A (en) * 1950-12-26 1953-06-09 David V Whiting Method for producing knitted shoe uppers of shrinkable yarn

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US148189A (en) * 1874-03-03 Improvement in sewing-lasts
US1688466A (en) * 1924-09-18 1928-10-23 United Shoe Machinery Corp Last
US1842719A (en) * 1930-03-17 1932-01-26 Dunker Henry Christian Louis Device for obtaining alpha sharp cutting of the rubber goloshing of cloth shoes or the like footwear provided by pressing with wholly or partly rubber-covered sides
US2082196A (en) * 1934-12-06 1937-06-01 Int Shoe Co Shoe last
US2641004A (en) * 1950-12-26 1953-06-09 David V Whiting Method for producing knitted shoe uppers of shrinkable yarn

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3913160A (en) * 1973-04-12 1975-10-21 Herbert Funck Method for the production of cushioned-sole shoes and last to perform the method
DE2450538A1 (de) * 1973-10-29 1975-04-30 Ro Search Inc Schuhwerk und verfahren der herstellung
US4817305A (en) * 1986-11-27 1989-04-04 Klockner Ferromatik Desma Gmbh Last for shoe shafts which has a generally T-shaped groove and a spring-biased generally T-shaped profile band therein
GB2202423A (en) * 1987-03-14 1988-09-28 A & M Bolton Ltd Grooved last for footwear manufacture
US5152025A (en) * 1988-07-29 1992-10-06 Sergio Hirmas Method for manufacturing open-heeled shoes
US5891484A (en) * 1996-12-21 1999-04-06 Klockner Desma Schuhmaschinen Gmbh Device for manufacturing sandals
US20110000101A1 (en) * 2009-07-01 2011-01-06 Wolverine World Wide, Inc. Sole construction and related method of manufacture
US8557157B2 (en) * 2009-07-01 2013-10-15 Wolverine World Wide, Inc. Method of manufacturing an article of footwear having a direct attach sole component
IT202100005381A1 (it) * 2021-03-08 2022-09-08 Stemma S R L Metodo per la produzione di calzature tramite stampaggio e stampo per l’attuazione di tale metodo

Also Published As

Publication number Publication date
TR17260A (tr) 1975-03-24
ZA712884B (en) 1972-02-23

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