US3750260A - Process for the making of slide fasteners, means for carrying out this process and fastener chain made by said process - Google Patents

Process for the making of slide fasteners, means for carrying out this process and fastener chain made by said process Download PDF

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Publication number
US3750260A
US3750260A US00204593A US3750260DA US3750260A US 3750260 A US3750260 A US 3750260A US 00204593 A US00204593 A US 00204593A US 3750260D A US3750260D A US 3750260DA US 3750260 A US3750260 A US 3750260A
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United States
Prior art keywords
rows
whorls
row
strand
linking components
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Expired - Lifetime
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US00204593A
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English (en)
Inventor
H Jakob
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.)
FINANC LICENCES ET BREVETS SOC
SOC FINANCIERE LICENCES ET BREVETS FR
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FINANC LICENCES ET BREVETS SOC
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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
    • B29D5/00—Producing elements of slide fasteners; Combined making and attaching of elements of slide fasteners
    • B29D5/06—Producing elements of slide fasteners; Combined making and attaching of elements of slide fasteners the interlocking members being formed by continuous helix
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/25—Zipper or required component thereof
    • Y10T24/2518—Zipper or required component thereof having coiled or bent continuous wire interlocking surface
    • Y10T24/2523—Zipper or required component thereof having coiled or bent continuous wire interlocking surface with core encircled by coils or bends
    • 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
    • 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
    • Y10T29/49785—Method of mechanical manufacture of a slide fastener of interlocking element
    • 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
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53291—Slide fastener

Definitions

  • FASTENERS MEANS FOR CARRYING OUT THIS PROCESS AND FASTENER CHAIN MADE BY SAID PROCESS Horst Jakob, Choisy-le-Roi, France Assignee: Societe Financiere Francaise de Licences et Brevets, Choisy-le-Roi, France Filed: Dec. 3, 1971 Appl. No.: 204,593
  • ABSTRACT provides a process, for the manufacture of a continuous chain of two rows of linking components for the making of slide fasteners out of two rows each consisting of a thread shaped into a spiral inside the whorls of which a longitudinal cord or strand is positioned, the improvement that the said cord or strand is placed in an intennediate position in the width of each row by assembling the two corresponding rows while causing the linking components of each row to penetrate more deeply between the whorls of the other, in order to push back the lengthways inside cord or strand in the latter row, whereafter these two rows are fixed on to two supporting tapes by means of lines of stitching, the stitches of said lines being inserted inside the free spaces between the cord or strand inside each row and the portions connecting the successive whorls thereof.
  • the linking components proper are generallymade by crushing or suitably deforming one of the ends of each whorl of the corresponding spiral. There are already a great many processes whereby such units can be made, and-which are then fixed by stitching onto supporting tapes.
  • the spirals constituting the linking components usually have a varying pitch so as to leave the widest possible space between two successive whorls.
  • the stitches can easily be inserted in each of these spaces. This enables the rows of linking components to be fixed at a high rate, e.g. by means of a chain stitch or any other suitable kind of stitch.
  • the rows of linking components have the disadvantage of not being perfectly held in the transverse direction.
  • the whorls of the corresponding spirals can slip sideways under the stitching. It. is true that various means have already been suggested for overcoming this disadvantage. However, these are not entirely satisfactory.
  • each row of linking components should be held transversally by fixing it by means of stitches inserted through a cord or similar item threaded inside each spiral beforehand.
  • This solution does indeed have the advantage of giving a perfect transversal hold.
  • the stitches have to be inserted with great accuracy so as to go through the cord provided inside each spiral.
  • the need to observe such a degree of accuracy has the disadvantage of reducing the rate of manufacture, and making it necessary to use accurate equipment.
  • the cord positioned inside each spiral has to be made of textile or similar fibres, so that the stitches can go through it.
  • This invention accordingly relates to a process and a manufacturing device enabling such rows of linking components to be held perfectly in the transverse direction without entailing the disadvantages listed above.
  • This process likewise involves inserting a cord or strand length-wise inside each spiral making up a row of linking components.
  • this cord or strand is placed in an intermediate position in the width of each row, and it is then fixed onto the corresponding supporting tape by means of stitches inserted in the free spaces between the longitudinal strand or cord and the portions connecting the corresponding whorls of the spiral.
  • the invention also relates to a manufacturing device for carrying out this process. Further, it also includes fasteners made by this process and with this device.
  • FIG. 1 is a partial view from above of a row of linking components used in carrying out this process
  • FIG. 2 is a view from above showing the application of this process
  • FIG. 3 is a sectional view along the line III-III in FIG. 2;
  • FIG. 4 is a partial view from above showing the fixing by stitching of two rows of linking components on two tapes serving to support them;
  • FIG. 5 is a corresponding sectional view along the line V-V in FIG. 4.
  • this process involves the use of a row of linking components consisting of a continuous thread la or lb shaped into a spiral.
  • the pitch of this varies so that the successive whorls 2 are as far apart as possible, and the two branches of each whorl may, for this purpose, be superimposed one on the other.
  • the various whorls comprise a flattened or deformed part 3a or 3b designed to form a linking compopent in the fastener to be made.
  • Such a row of linking components can be made in various ways, using one or other of the known processes for the purpose.
  • a longitudinal cord or strand 4a or 4b is positioned inside the whorls so that it extends longitudinally over the whole length of the spiral.
  • this cord or strand may also be positioned inside the whorls after the corresponding spiral has been shaped.
  • various known processes may be used for the purpose.
  • the strand 4a or 4b is such that it only takes up part of the space inside the whorls of the corresponding spiral.
  • this strand or cord is brought into proximity with the linking components 3a or 3b, unless it is already in such a position right from the time it is positioned inside the spiral.
  • this strand is placed in an intermediate position in the width of the corresponding row.
  • the two spirals 1a and lb so formed are assembled by making the linking components 3a or 3b of each of them penetrate deeper than in the case of normal joining of these two rows.
  • a joining device is used, consisting of a part 5 comprising a Y- shaped channel 6 whose two top forks 7a and 7b take the two rows of linking components la and lb.
  • the linking components of these rows are made to join at the place where the two forks 7a and 7b of the channel 6 meet. This coupling is obtained by exerting a pull, in the direction of the arrow F,, on the continuous chain emerging from the channel 6.
  • the width E of this channel is narrower than that of the standard slide which will subsequently be mounted on this chain. This lesser width E is calculated so that the linking components 3a and 3b of each row penetrate deeper between those of the other row than during subsequent normal joining of these two rows. In these circumstances, the linking components of each row push back the strand 4a or 4b which is inside the whorls of the other row.
  • Each strand is thus moved away from the linking components of the row inside which it is positioned, and brought to the middle part of the whorls of that row. In this position, this strand subdivides each space between two whorls into two separate parts, respectively situated on the same side as the linking components 3a or 3b, and on the side of the portions 13 connecting the whorls, i.e.:
  • This assembly device also comprises a pressing roller 8 positioned over the chain obtained by assembling the two rows la and lb. These are subjected to heating at that point, so that by virtue of the crushing of the whorls by the roller, the inside strands 4a or 4b are pressed into them and a slight indentation 9 is formed.
  • indentations so made is to hold the inside strands 4a and 4b in the position they are occupying at that moment after having been pushed back as described earlier, this position being substantially along the median axis of each of the rows la and lb.
  • each of these inside strands leaves a comparatively large space 10 between itself and the portions 13 connecting two successive whorls.
  • this space makes it easy subsequently to stitch each of the rows la and lb on to supporting tapes lla and llb, as shown in FIGS. 4 and 5.
  • This operation is effected on each row by means of a line of stitches 12 inserted in the space between each inside strand 4a or 4b and the portions 13 connecting two successive whorls.
  • the sewing needle is thus inserted into the space 10 previously mentioned and each stitch thus closely holds the corresponding whorl against the tape 11a or llb.
  • the inside strand 4a thus plays an essential part in the transversal retention of each row of linking components on the corresponding supporting tape. Nevertheless, the presence of this inside strand in no way hampers the subsequent fixing of each row of linking components by stitching. In fact, contrary to what was the case in some earlier manufactures, the stitches are not inserted through this cord but outside it, in the spaces 10 between this cord and the portions 13 connecting the whorls. Now, as already mentioned, these spaces are large enough for the stitches to be inserted easily and at high speed.
  • the continuous fastener chain obtained by this process can then be cut into longer or shorter lengths in order to make a number of separate slide fasteners.
  • the manufacture of these is obviously completed by positioning a control slide on each of them, as well as end stops made by some means.
  • this invention also relates to fasteners made by application of the process described above.
  • the lengthways cord or strand positioned inside each row of linking components may be made of various materials. In fact, it may consist of a cord based on textile fibres, as was the case in some earlier fasteners. Nevertheless, this is no longer essential in the case of this process, since the fixing seam is sewn outside this cord. In these circumstances, this may perfectly well consist of a synthetic resin filament or thread, which is, in fact, especially good.
  • each row of linking components may be fixed by stitches other than those shown as an indication in FIGS. 4 and 5.
  • lines of stitching can be provided for, and they may possibly be positioned on each side of the inside strands 4a or 4b of the corresponding row of linking components. It is also possible to provide for stitching with chain-stitches straddling the inside strand 4a or 4b by means of two needles positioned on either side thereof.
  • a chain for slide fasteners comprising two connectible rows each including a thread shaped into a spiral having successive whorls, said spiral including linking components along one longitudinal marginal edge, portions connecting adjacent whorls along the other marginal edge, and a longitudinal cord or strand within the whorls and between the edges, comprising the steps of disposing a strand between the whorls of said spirals, causing the linking components along said one marginal edge of each of said spirals to enter between successive whorls of the spiral of said other row, thereafter shifting said rows toward each other to cause said cords to be shifted toward said other marginal edges of said rows.
  • Apparatus for manufacturing a chain for making slide fasteners comprising two connectible rows each including a thread shaped into a spiral having successive whorls, said spiral including linking components along one marginal longitudinal edge, portions connecting adjacent whorls along the other marginal edge, and a longitudinal cord or strand within the whorls and intermediate the said edges, said apparatus comprising a Y shaped joining channel having side walls, said channel including first and second converging branches leading to a stem, the transverse spacing of said side walls of said stem being less than the sum of the distances between said other marginal edges and said linking components, means for simultaneously advancing two said rows through said branches and out said stem progressively to connect said linking components and thereafter shift said rows toward each other between the marginal edges of the other row.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Slide Fasteners (AREA)
  • Surgical Instruments (AREA)
US00204593A 1970-12-08 1971-12-03 Process for the making of slide fasteners, means for carrying out this process and fastener chain made by said process Expired - Lifetime US3750260A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7044071A FR2116794A5 (de) 1970-12-08 1970-12-08

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US (1) US3750260A (de)
DE (1) DE2160927C2 (de)
FR (1) FR2116794A5 (de)
GB (1) GB1371075A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836413A (en) * 1969-08-23 1974-09-17 A Frohlich Method of and apparatus for thermofixing of slide-fastener coupling chains
US4060886A (en) * 1975-01-09 1977-12-06 Textron Inc. Method and apparatus for manufacture of slide fastener stringer
US4290194A (en) * 1978-11-06 1981-09-22 Yoshida Kogyo K. K. Apparatus for interengaging opposed rows of slide fastener coupling elements
US4442583A (en) * 1982-07-26 1984-04-17 Talon, Inc. Shearing slide fastener chain
US20140230197A1 (en) * 2011-09-21 2014-08-21 Ykk Corporation Slide Fastener and Method for Manufacturing Slide Fastener
US20180110302A1 (en) * 2016-10-24 2018-04-26 Chao-Mu Chou Continuous element slide fastener
US20180325224A1 (en) * 2015-12-02 2018-11-15 Ykk Corporation Cover attachment structure and cover attachment method for cover attachment structure
US11083255B2 (en) 2017-02-02 2021-08-10 Ykk Corporation Slide fastener-attached product

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5745562B2 (de) * 1974-09-05 1982-09-28

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183169A (en) * 1938-11-05 1939-12-12 Prentice G E Mfg Co Method of making fasteners
US3176637A (en) * 1962-07-30 1965-04-06 Talon Inc Means for manufacturing slide fastener stringers
US3634922A (en) * 1970-08-26 1972-01-18 Scovill Manufacturing Co Apparatus and method for forming coil for plastic slide fastener

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3290747A (en) * 1965-02-18 1966-12-13 Scovill Manufacturing Co Plastic zippers and method of making the same
DE1610422A1 (de) * 1965-06-04 1970-12-10 Opti Holding Ag Vorrichtung zur Herstellung von Verschlussgliederreihen fuer Reissverschluesse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183169A (en) * 1938-11-05 1939-12-12 Prentice G E Mfg Co Method of making fasteners
US3176637A (en) * 1962-07-30 1965-04-06 Talon Inc Means for manufacturing slide fastener stringers
US3634922A (en) * 1970-08-26 1972-01-18 Scovill Manufacturing Co Apparatus and method for forming coil for plastic slide fastener

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836413A (en) * 1969-08-23 1974-09-17 A Frohlich Method of and apparatus for thermofixing of slide-fastener coupling chains
US4060886A (en) * 1975-01-09 1977-12-06 Textron Inc. Method and apparatus for manufacture of slide fastener stringer
US4290194A (en) * 1978-11-06 1981-09-22 Yoshida Kogyo K. K. Apparatus for interengaging opposed rows of slide fastener coupling elements
US4442583A (en) * 1982-07-26 1984-04-17 Talon, Inc. Shearing slide fastener chain
US10016026B2 (en) * 2011-09-21 2018-07-10 Ykk Corporation Slide fastener and method for manufacturing slide fastener
US20140230197A1 (en) * 2011-09-21 2014-08-21 Ykk Corporation Slide Fastener and Method for Manufacturing Slide Fastener
US20180325224A1 (en) * 2015-12-02 2018-11-15 Ykk Corporation Cover attachment structure and cover attachment method for cover attachment structure
US10646006B2 (en) * 2015-12-02 2020-05-12 Ykk Corporation Cover attachment structure and method
US20180110302A1 (en) * 2016-10-24 2018-04-26 Chao-Mu Chou Continuous element slide fastener
US11083255B2 (en) 2017-02-02 2021-08-10 Ykk Corporation Slide fastener-attached product
US11089846B2 (en) 2017-02-02 2021-08-17 Ykk Corporation Slide fastener-attached product, element member and manufacturing method of slide fastener-attached product
US11206901B2 (en) 2017-02-02 2021-12-28 Ykk Corporation Slide fastener-attached product, element member and manufacturing method of slide fastener-attached product
US11406165B2 (en) * 2017-02-02 2022-08-09 Ykk Corporation Slide fastener-attached product

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Publication number Publication date
FR2116794A5 (de) 1972-07-21
GB1371075A (en) 1974-10-23
DE2160927C2 (de) 1982-10-28
DE2160927A1 (de) 1972-07-13

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