US3800394A - Method of making slide fastener from continuous chain - Google Patents

Method of making slide fastener from continuous chain Download PDF

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Publication number
US3800394A
US3800394A US00319998A US3800394DA US3800394A US 3800394 A US3800394 A US 3800394A US 00319998 A US00319998 A US 00319998A US 3800394D A US3800394D A US 3800394DA US 3800394 A US3800394 A US 3800394A
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US
United States
Prior art keywords
carrier
terminal parts
connecting element
fastening
fastening elements
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
US00319998A
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English (en)
Inventor
Wolfgang Ruhrmann
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Individual
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Individual
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Publication date
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Publication of US3800394A publication Critical patent/US3800394A/en
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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/42—Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00
    • A44B19/62—Assembling sliders in position on stringer tapes
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/42—Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00
    • A44B19/60—Applying end stops upon stringer tapes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49782—Method of mechanical manufacture of a slide fastener

Definitions

  • Top or bottom stops may be mounted on the connecting strips prior to or after their fastening to the carriers, or such stops may be formed under heat and pressure from the material of the connecting strips during the fastening of the same to the carriers.
  • the invention provides a method in which a longitudinal portion of a continuous fastener chain is severed from the remainderof the chain, whereby respective terminal parts of each carrier associated with the severed portions are separated from eachother.
  • the two severed chain portions are then moved longitudinally away from each other until a gap is formed between the two severed terminal parts of each tape or like carrier.
  • Each gap is bridged by a pliable connecting strip in such a manner that respective terminal parts of the connecting strip are superimposed on the respective terminal parts of the associated carrier.
  • Each terminal part of a carrier is fixedly fastened to the superimposed terminal part of the associated connecting strip, and the connecting strip is severed transversely to the direction of fastener chain elongation between its terminal parts in such a manner that a portion of the severed connecting strip projects beyond at least one of the terminal parts of the associated carrier.
  • FIG. I shows a continuous fastener chain in fragmenwoven to the proximate edges of the tapes 1, 2, and interlocked respective rows of scoops or.fastening elements 1b, 2b, for which the corded tapes 1, 1a and 2, 2a serve as carriers, as is conventional in itself.
  • the scoops lb, 2b illustrated consist of metal, but may be made of plastic as is known in itself and not directly relevant to this invention.
  • the gaps are bridged respectively by a connecting rectangular strip 5 whose terminal parts are superimposed on the two terminal parts 1, and by a connecting strip 6 which is similarly superimposed on the terminal tape parts 2.
  • the flat connecting strips 5, 6 consist of thermo-plastic resin composition such as nylon, and the tapes 1, 2 are woven from mixed cotton and'nylon yarns.
  • the strips 5, 6 Prior to being placed upon the tape ends 1', 2, the strips 5, 6 are loosely assembled with a slider 10 by inserting respective edge portions of the pliable strips into the lateral slots between the rails of the slider, not themselves visible in the drawing, and the strips 5, 6 are laid on the tape ends in such a manner that the slider 10 is located in the gap between the tape ends, as shown in FIG. 3.
  • a heated platen is then pressed against the strips 5, 6 while the sub-assembly illustrated in FIG. 3 is supported on a flat, heated anvil.
  • the shape of the platen is evident from consideration of FIG. 4. It is formed with three recesses into which the heated, thermoplastic material of the strips 5, 6 is forced under the applied pressure to form projections 7, 8 and 9. Simultaneously, the nylon fibers in the terminal tape parts 1, 2' are welded to the nylon strips 5, 6.
  • the projections 7, 8 are elongated ribs symmetrical relative to the longitudinal median line of the fastener.
  • the ribs each have two straight longitudinal portions of different length.
  • the shorter portions 7a, 8a of the ribs are closely adjacent the last fastening elements of the chain portion 4 and are inclined at angles of at least 45 to the direction of tape elongation.
  • the longer rib por tions 7b, 8b extend from the associated rib portions 7a, 8a longitudinally away from the fastening elements of the chain portion 4 at an angle of less than 20 to the direction of tape elongation, and the two portions of eachrib are obtusely inclined relative to each other so that their bights face each other.
  • the projection 9 connects the two strips 5, 6 over the last fastening elements of the chain portion 3 and is formed jointly by fused material of both strips.
  • the slider 10 After heat-sealing of the strips 5, 6 to the tape ends 1', 2' and cooling of the heat-sealed assembly, the slider 10 is moved over the chain portion 4 into the position illustrated in FIG. 4.
  • the slider readily overrides the ribs 7, 8 and thereafter forces the matching fastening elements on the two tape ends 1, 2 apart in the usual manner to open the chain portion 4.
  • the closing movement of the slider 10 is limited by the more steeply inclined rib portions 7a, 8a which act as top stops. If so desired, only one of the ribs 7, 8 may be used to provide a single top stop.
  • the fastening elements lb, 2b consist ofthermoplastic material, they may be flattened where compressed by the afore-mentioned heated platen so that the bottom stop 9 need not project beyond the remainder of the carrier ends 5', 6 connected by the stop. If the material of the fastening elements is miscible with that of the strips 5, 6 when heated near its fusion temperature, the compressed fastening elements may themselves provide a portion of the bottom stop material.
  • thermoplastic strips 5, 6 are preferred and are preferably attached to the tape ends 1', 2 by heatsealing.
  • the method of the invention is applicable to tapes and strips which consist entirely of woven cotton yarn.
  • the superimposed respective terminal parts of the tapes and strips may then be fastened to each other by sewing or by adhesively cementing in a conventional manner.
  • Top stops of metal or plastic shaped as shown in FIG. 4 may be attached to the strips 5, 6 prior to assembly with the slider 10, and a bottom stop or the conventional bottom assembly of a separable fastener including two pins and a U-shaped clip may be attached to the projecting carrier ends 5, 6' after the strips 5, 6 were cut.
  • the cut across the strips 5, 6 may be placed to suit the intended application of the fastener so that free fastener ends projecting longitudinally beyond the rows of elements lb, 2b are formed only at one end ofeach fastener.
  • each connecting element transversely to said direction intermediate said terminal parts thereof in such a manner that a portion of the severed connecting element projects in said direction beyond at least one of the terminal parts of the associated carrier.
  • At least one of said connecting elements essentially consists of material capable of being permanently shaped under applied pressure, and said one connecting element is being fastened to the terminal parts of the associated carrier under a pressure sufficient to shape an end stop on one terminal part of said one connecting element, said end stop being aligned with the row of fastening elements on the terminal part of the associated carrier fastened to said one terminal part of the connecting element.
  • said stop includes two rib portions offset in said direction and respectively nearer and farther from the fastening elements on said terminal part of the associated carrier, said rib portions being obliquely inclined relative to said direction, said nearer rib portion being more steeply inclined than said farther rib portion.

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  • Slide Fasteners (AREA)
US00319998A 1972-01-13 1973-01-02 Method of making slide fastener from continuous chain Expired - Lifetime US3800394A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722201410 DE2201410A1 (de) 1972-01-13 1972-01-13 Verfahren zum herstellen von reissverschluessen

Publications (1)

Publication Number Publication Date
US3800394A true US3800394A (en) 1974-04-02

Family

ID=5832854

Family Applications (1)

Application Number Title Priority Date Filing Date
US00319998A Expired - Lifetime US3800394A (en) 1972-01-13 1973-01-02 Method of making slide fastener from continuous chain

Country Status (6)

Country Link
US (1) US3800394A (show.php)
JP (1) JPS5034451B2 (show.php)
AU (1) AU446368B2 (show.php)
DE (1) DE2201410A1 (show.php)
FR (1) FR2167887B1 (show.php)
GB (1) GB1386706A (show.php)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299027A (en) * 1979-02-24 1981-11-10 Yoshida Kogyo, K.K. Apparatus for applying reinforcing film pieces to a pair of slide fastener stringers
US4516304A (en) * 1982-04-28 1985-05-14 Yoshida Kogyo K. K. Method and apparatus for applying reinforcing pieces to slide fastener chain

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2759526C3 (de) * 1977-07-29 1981-11-12 Yoshida Kogyo K.K., Tokyo Reißverschlußkette
DE3525133A1 (de) * 1985-07-13 1987-01-29 Opti Patent Forschung Fab Verfahren und endmontage-automat zur herstellung von mit endteilen, schieber und gegebenenfalls anfangsteilen versehenen, gekuppelten reissverschluessen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353256A (en) * 1965-04-03 1967-11-21 Opti Holding Ag Method of finishing slide fasteners
US3588991A (en) * 1968-09-06 1971-06-29 Naegele Feinmaschinenbau Forming and attaching top stops to fastener chains

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR812476A (fr) * 1935-10-24 1937-05-11 Procédé pour la fabrication de fermetures à curseur et moyens pour sa mise en oeuvre

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3353256A (en) * 1965-04-03 1967-11-21 Opti Holding Ag Method of finishing slide fasteners
US3588991A (en) * 1968-09-06 1971-06-29 Naegele Feinmaschinenbau Forming and attaching top stops to fastener chains

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299027A (en) * 1979-02-24 1981-11-10 Yoshida Kogyo, K.K. Apparatus for applying reinforcing film pieces to a pair of slide fastener stringers
US4516304A (en) * 1982-04-28 1985-05-14 Yoshida Kogyo K. K. Method and apparatus for applying reinforcing pieces to slide fastener chain

Also Published As

Publication number Publication date
DE2201410A1 (de) 1973-07-19
FR2167887A1 (show.php) 1973-08-24
GB1386706A (en) 1975-03-12
AU5074073A (en) 1974-03-21
AU446368B2 (en) 1974-03-21
JPS4879053A (show.php) 1973-10-23
JPS5034451B2 (show.php) 1975-11-08
FR2167887B1 (show.php) 1975-10-31

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