US3332097A - Footwear and method of its manufacture - Google Patents

Footwear and method of its manufacture Download PDF

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Publication number
US3332097A
US3332097A US394441A US39444164A US3332097A US 3332097 A US3332097 A US 3332097A US 394441 A US394441 A US 394441A US 39444164 A US39444164 A US 39444164A US 3332097 A US3332097 A US 3332097A
Authority
US
United States
Prior art keywords
abutment
sealing
elastomeric material
mold
side frame
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
US394441A
Other languages
English (en)
Inventor
Ernest E Rollman
George M Milner
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
Priority to US394441A priority Critical patent/US3332097A/en
Priority to IL24204A priority patent/IL24204A/xx
Priority to GB36794/65A priority patent/GB1111146A/en
Priority to DK446465AA priority patent/DK141831B/da
Priority to ES0316982A priority patent/ES316982A1/es
Priority to BR172733/65A priority patent/BR6572733D0/pt
Priority to CH1219265A priority patent/CH444713A/de
Priority to AT803065A priority patent/AT283956B/de
Priority to NL656511405A priority patent/NL150999B/xx
Priority to BE669037D priority patent/BE669037A/xx
Priority to DE19651485774 priority patent/DE1485774C3/de
Priority to ES117053U priority patent/ES117053Y/es
Application granted granted Critical
Publication of US3332097A publication Critical patent/US3332097A/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
    • B29D35/06—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
    • B29D35/08—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 having multilayered parts
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B1/00—Footwear characterised by the material
    • A43B1/0027—Footwear characterised by the material made at least partially from a material having special colours
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/28—Soles; Sole-and-heel integral units characterised by their attachment, also attachment of combined soles and heels
    • A43B13/32—Soles; Sole-and-heel integral units characterised by their attachment, also attachment of combined soles and heels by adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00—Use of unspecified rubbers as moulding material

Definitions

  • the method of manufacturing weltless footwear by forming a sealing abutment at the bottom margin of the upper by a row of stitching and providing an exten sion of the upper beyond the stitching and temporarily holding the sealing abutment at the botttom of a last while the upper is on a last and placed in a side frame and releasing the sealing abutment after the side frame of the shoe mold is placed adjacent the sealing abutment to permit the latter to move into sealing engagement with the side frame and wherein the extension and at least a portion of the abutment are within the confines of the sole face of the last and side walls of the mold after which pressure is applied on the elastomeric material which is in the mold to force the sealing abutment into tighter sealing engagement with the side frame resulting in the bonding of the bottom margin of the upper and the extension to the elastomeric material.
  • the invention refers to the manufacture of shoes and similar footwear with uppers of leather or similar ma terial, and soles containing elastomeric material molded and cured in contact with and to the upper.
  • the shoe After such lasting and roughening, the shoe has to be removed from the wooden last and placed on the metal last of the sole molding device.
  • the metal frame of the mold has to be pressed strongly against the upper to prevent escape of rubber or other elastomeric material along the mold edge.
  • One object of the invention is to eliminate the roughening after the lasting either by carrying it out before lasting or by eliminating the toughening operation entirely.
  • Another object of the invention is to provide footwear of the kind described with a clear and preselected demarcation between the upper and the sole so as to prevent irregularities which easily damage the appearance of the finished footwear.
  • FIG. 1 an enlarged cross section through the edge of the footwear, located in a mold, in the position at the beginning of the actual molding of the elastomeric material, while 3,332,097 Patented July 25, 1967 FIG. 2 shows the same shoe edge after removal from the mold,
  • dFIGS. 3 and 4 show an alternative execution of the shoe e ge.
  • the margin 2 of the upper 1 is roughened at 3 when still flat, in any of the usual skiving machines, which guide the leather at the very edge of the margin.
  • a projection is formed by a fold 5 to form a ridge or bead 4 along the outline of the skived margin.
  • the inner side of the lasting margin, as well as the corresponding margin of the usual insole 9 are coated with adhesive material which bonds under heat and substantial pressure.
  • the so-prepared parts are then placed on the last of the sole-molding device, so that the lasting margin of the upper covers the insole 9.
  • the lasting margin 2 of the upper 1 is temporarily held in place by metal clips or strings, until the side frame 11 of the molding cavity is placed and closed around the upper on the last, in contact with the bead 4.
  • the clips are then removed or the strings cut so that the bead, through the tension of the leather of the upper is held tightly against the cavity wall of the side frame.
  • the sole containing elastomeric material is then formed, either by injecting the elastomeric material into a closed cavity, or by placing sole material 8 into the mold cavity and exerting pressure from the outside by the movement of a bottom plate 7, as shown in FIG. 1, or finally by creating pressure within the elastomeric material through the influence of heat or chemical reaction.
  • the molding pressure of the elastomeric material Will press the bead or ridge against the cavity wall and seal the cavity against the outside, preventing thereby local escape of elastomeric material. Hitherto such spew had to be removed in costly hand operations and left nevertheless unsightly irregularities.
  • the stitching 6 through the margin of the upper and a separate strip 13, as shown in FIG. 4.
  • the stitching is provided close to the outer edge of the strip 13 so that the pressure of the elastomeric material cannot deflect the edge 14 of the strip from the sealing contact with the moldwall.
  • the finished article, as removed from the mold is improvide by the presence of the strip of head 4.
  • This strip improves the appearance by the elimination of irregularities and by improving the bond between sole and upper by the embedding of the bead in the elastomeric material.
  • the strip or bead brings not only the advantage in cost reduction in that the skiving or other roughening can be carried out before lasting, as a less expensive operation, but the strip or bead is highly effective in sealing the mold cavity without the strong pressure of the edge against the upper. This pressure to secure adequate sealing is often so strong as to deface or even damage the leather of the upper.
  • the elastomeric pressure is used to bond the material to the roughened surface of the bottom margin and simultaneously to press the bead or strip against the mold wall to seal the mold cavity.
  • the pressure of the elastomeric material is further used for a third purpose, the bonding of the lasting margin to the insole in the sole molding device, in a single operation with the molding and curing of the sole.
  • Such securing of the insole to the lasting margin will occur already by the fact that both insole and lasting margin are bonded to the same layer of el-astomeric material; the adhesive connection will not only prevent curling of the edges of the insole, but will add also to the strength of the lasting, and this without additional lasting costs.
  • a core can be placed in the head 4 while stitching the seal 6, 12.
  • Such core might be a string used to tighten and hold the upper on the last of the sole molding device before placing the side frame of the mold against the head, or spring wire might be placed into the bead to remain there permanently.
  • Method of manufacturing weltless footwear comprising forming a sealing abutment at the bottom margin of the upper by a row of stitching with an extension of the upper beyond said row of stitching, placing the upper on the last of a shoe mold having a side frame, temporarily holding under tension the sealing abutment at the bottom of the last, positioning the side frame of the shoe mold adjacent to the sealing abutment, releasing tension on the sealing abutment to permit it to move outwardly into sealing engagement with the side frame with said extension and at least a portion of said abutment within the confines of the sole face of the last and the side walls of the mold, applying pressure on elastomeric material placed within the mold to force the sealing abutment into tighter sealing engagement with the side frame and bonding the bottom margin of the upper and said extension to the elastomeric material.
  • sealing ridge is formed by stitching a fold in the bottom margin of the upper.
  • sealing ridge is formed by stitching a strip of material to the bottom margin of the upper.
  • Weltless footwear comprising an upper of leather and an outsole of elastomeric material bonded and cured directly to said upper, said footwear having an abutment at the juncture of said upper and sole, a row of stitching through the bottom margin of said upper securing said abutment in place, said abutment having a rough surface, said abutment forming the upper outer edge of said sole, and an extension of the upper extending inwardly toward the center of said sole and beyond said row of stitching, said extension and at least a portion of said abutment being entirely within the confines of the sole face of the upper, said sole being molded and cured directly to said extension and said abutment and covering the rough portion of said abutment, the outer edge of the rough portion of said abutment and sole terminating at said juncture.
  • Footwear as set forth in claim 6 wherein a fold of the bottom margin of said upper constitutes said abutment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
US394441A 1964-09-04 1964-09-04 Footwear and method of its manufacture Expired - Lifetime US3332097A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US394441A US3332097A (en) 1964-09-04 1964-09-04 Footwear and method of its manufacture
IL24204A IL24204A (en) 1964-09-04 1965-08-23 Footwear and method of its manufacture
GB36794/65A GB1111146A (en) 1964-09-04 1965-08-26 Method of manufacturing articles of footwear and footwear made by said method
ES0316982A ES316982A1 (es) 1964-09-04 1965-08-31 Un metodo para la manufactura de calzado.
BR172733/65A BR6572733D0 (pt) 1964-09-04 1965-08-31 Calcado e processo de sua fabricacao
CH1219265A CH444713A (de) 1964-09-04 1965-08-31 Schuhwerk und Verfahren zu dessen Herstellung
DK446465AA DK141831B (da) 1964-09-04 1965-08-31 Rammeløs sko.
AT803065A AT283956B (de) 1964-09-04 1965-09-01 Schuh und Verfahren zu seiner Herstellung
NL656511405A NL150999B (nl) 1964-09-04 1965-09-01 Schoeisel.
BE669037D BE669037A (pt) 1964-09-04 1965-09-01
DE19651485774 DE1485774C3 (de) 1964-09-04 1965-09-03 Rahmenloser Schuh
ES117053U ES117053Y (es) 1964-09-04 1965-11-04 Calzado.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US394441A US3332097A (en) 1964-09-04 1964-09-04 Footwear and method of its manufacture

Publications (1)

Publication Number Publication Date
US3332097A true US3332097A (en) 1967-07-25

Family

ID=23558964

Family Applications (1)

Application Number Title Priority Date Filing Date
US394441A Expired - Lifetime US3332097A (en) 1964-09-04 1964-09-04 Footwear and method of its manufacture

Country Status (10)

Country Link
US (1) US3332097A (pt)
AT (1) AT283956B (pt)
BE (1) BE669037A (pt)
BR (1) BR6572733D0 (pt)
CH (1) CH444713A (pt)
DK (1) DK141831B (pt)
ES (2) ES316982A1 (pt)
GB (1) GB1111146A (pt)
IL (1) IL24204A (pt)
NL (1) NL150999B (pt)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3473178A (en) * 1966-01-14 1969-10-21 Ro Search Inc Method of manufacture of footwear
US3474477A (en) * 1967-01-27 1969-10-28 Creative Reserch Corp Method and apparatus for making sandals and other open top shoes
US3742544A (en) * 1971-03-02 1973-07-03 Ro Search Inc Method of making footwear
US3855657A (en) * 1973-11-12 1974-12-24 G Mazzotta Shoe moulds
US4024594A (en) * 1974-02-27 1977-05-24 Koflach Sportgerate Ges. M.B.H. Apparatus for connecting a shoe sole to its shaft
US4170802A (en) * 1977-11-07 1979-10-16 Roy Norman A Method of manufacturing footwear
US4333193A (en) * 1980-05-01 1982-06-08 The United States Shoe Corporation Shoe molding process
WO1995031911A1 (en) * 1994-05-25 1995-11-30 The Florsheim Shoe Company Method of constructing a composite shoe sole

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2234934B (en) * 1989-07-07 1992-02-19 Shoemakers Ltd Method of producing shoes and the like with moulded soles
CN107053722A (zh) * 2017-03-22 2017-08-18 泉州玉环模具有限公司 一种连帮pu注塑鞋模

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1497852A (en) * 1922-08-12 1924-06-17 Edward J Hooper Shoe
DE828073C (de) * 1949-07-11 1952-01-14 Roca Guix S A Verfahren zum Herstellen von Schuhen
GB744149A (en) * 1952-05-13 1956-02-01 Ro Search Inc Method of and device for the manufacture of footwear and footwear so manufactured
US2789295A (en) * 1952-06-24 1957-04-23 Ro Search Inc Methods of manufacture of footwear
CA600085A (en) * 1960-06-21 R. Rybka Karel Bonding of moulded shoe soles to uppers
US2996814A (en) * 1958-06-27 1961-08-22 Holeproof Hosiery Company Washable slipper-type footwear with one-piece resilient sole
US3047890A (en) * 1960-08-30 1962-08-07 Cambridge Rubber Co Method of making machine-made platform-style shoes
US3061949A (en) * 1960-10-20 1962-11-06 Comfort Slipper Corp Shank strengthened rubber sole shoe
FR1325866A (fr) * 1962-03-24 1963-05-03 Chaussure à semelle de cuir fixée par moulage et vulcanisation
US3175308A (en) * 1962-07-09 1965-03-30 Werman & Sons Inc A Molded sole shoe construction

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA600085A (en) * 1960-06-21 R. Rybka Karel Bonding of moulded shoe soles to uppers
US1497852A (en) * 1922-08-12 1924-06-17 Edward J Hooper Shoe
DE828073C (de) * 1949-07-11 1952-01-14 Roca Guix S A Verfahren zum Herstellen von Schuhen
GB744149A (en) * 1952-05-13 1956-02-01 Ro Search Inc Method of and device for the manufacture of footwear and footwear so manufactured
US2789295A (en) * 1952-06-24 1957-04-23 Ro Search Inc Methods of manufacture of footwear
US2996814A (en) * 1958-06-27 1961-08-22 Holeproof Hosiery Company Washable slipper-type footwear with one-piece resilient sole
US3047890A (en) * 1960-08-30 1962-08-07 Cambridge Rubber Co Method of making machine-made platform-style shoes
US3061949A (en) * 1960-10-20 1962-11-06 Comfort Slipper Corp Shank strengthened rubber sole shoe
FR1325866A (fr) * 1962-03-24 1963-05-03 Chaussure à semelle de cuir fixée par moulage et vulcanisation
US3175308A (en) * 1962-07-09 1965-03-30 Werman & Sons Inc A Molded sole shoe construction

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3473178A (en) * 1966-01-14 1969-10-21 Ro Search Inc Method of manufacture of footwear
US3474477A (en) * 1967-01-27 1969-10-28 Creative Reserch Corp Method and apparatus for making sandals and other open top shoes
US3742544A (en) * 1971-03-02 1973-07-03 Ro Search Inc Method of making footwear
US3855657A (en) * 1973-11-12 1974-12-24 G Mazzotta Shoe moulds
US4024594A (en) * 1974-02-27 1977-05-24 Koflach Sportgerate Ges. M.B.H. Apparatus for connecting a shoe sole to its shaft
US4170802A (en) * 1977-11-07 1979-10-16 Roy Norman A Method of manufacturing footwear
US4333193A (en) * 1980-05-01 1982-06-08 The United States Shoe Corporation Shoe molding process
WO1995031911A1 (en) * 1994-05-25 1995-11-30 The Florsheim Shoe Company Method of constructing a composite shoe sole
US5477577A (en) * 1994-05-25 1995-12-26 The Florsheim Shoe Company Method of constructing footwear having a composite sole with a molded midsole and an outsole adhered thereto

Also Published As

Publication number Publication date
NL6511405A (pt) 1966-03-07
DK141831B (da) 1980-06-30
ES117053Y (es) 1966-11-16
AT283956B (de) 1970-08-25
ES316982A1 (es) 1966-06-16
CH444713A (de) 1967-09-30
ES117053U (es) 1965-12-16
BE669037A (pt) 1965-12-31
NL150999B (nl) 1976-10-15
DE1485774B2 (de) 1975-08-21
BR6572733D0 (pt) 1973-06-14
DE1485774A1 (de) 1970-02-26
IL24204A (en) 1969-11-30
DK141831C (pt) 1980-11-10
GB1111146A (en) 1968-04-24

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