US2996780A - Slide fastener structure employing helical fastener member - Google Patents
Slide fastener structure employing helical fastener member Download PDFInfo
- Publication number
- US2996780A US2996780A US745901A US74590158A US2996780A US 2996780 A US2996780 A US 2996780A US 745901 A US745901 A US 745901A US 74590158 A US74590158 A US 74590158A US 2996780 A US2996780 A US 2996780A
- Authority
- US
- United States
- Prior art keywords
- thread
- cord
- fastener
- threads
- helical
- 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
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/24—Details
- A44B19/40—Connection of separate, or one-piece, interlocking members to stringer tapes; Reinforcing such connections, e.g. by stitching
- A44B19/406—Connection of one-piece interlocking members
-
- 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
- Y10T24/2527—Attached by stitching
Definitions
- Helical thread slide fasteners having two opposed sets of fastener elements comprising profiled helical fastener threads made of metal or preferably of a thermo-plastic material have heretofore been made in such a manner that an attachment cord is linked to the helical threads forming each set of fastener elements.
- Two such helical threads preferably in mesh with one another and attached to their cords, are fed to a dual needle sewing machine with two carrier strips and two slider guide cords. Each carrier strip is firmly sewn to one side of an attachment cord and one guide cord is sewn firmly to the opposite side thereof.
- the guide cords are necessary in order to provide a side flange of a slider with a guide surface of sufficient height above or below the fastener threads.
- the output of usual double-needle sewing machines which have hitherto been employed, is limited by the length of the thread of the shuttle. The operator is obliged to renew the bobbin of the shuttle frequently, thereby interrupting the continuity of the sewing process.
- One object of the invention is to allow working with threads of any desired length which run off large rollers so that an interruption of the sewing process is no longer necessary and thereby the output of the sewing machine is considerably increased.
- Another object is to provide a slide fastener structure in which the stitching of attachment cord to the carrier strip itself defines a guide cord or strip of sufficient height to guide the slider of the fastener.
- the attachment cord 2 which in itself is not of sufiicient thickness to form a guide for the conventional slider is sewn to the carrier strip 4 by means of a double chain-stitch seam, whose lower-thread 5 is situated on the side of the attachment cord which is turned away from the carrier strip, as clearly shown in FIGURE '3, thus providing sufiicient thickness and making an additional conventional guide cord unnecessary.
- the under-thread should therefore have a sufiicient thickness, hardness, and surface condition as is necessary for guiding the slider.
- the under-thread material forms a strip reinforced on both sides.
- the upperthread 6 of the double chain-stitch seam primarily determines the strength of the seam.
- the helical thread 1 with attachment cord 2 is fed in the vicinity of one edge of and below the carrier strip 4, to a double chain-stitch sewing machine in such a manner that the loops of the underthread 5, which are held by means of the loops of the upper-thread 6 stitched through pairs of aligned holes in the carrier strip and through the attachment cord.
- This forms a strip of interlocked loops extending below the attachment cord and its linking threads 3 a suificient height for guiding the fastener slider.
- two opposed and enmeshed helical threads with attachment cords may be sewn at the same time to the two carrier strips in the double chainstitch sewing machine.
- the direction of sewing may be effected in the direction of opening of the fastener by the slider, so that the endless sets of fastener elements become firmly bound to one another by means of an end member in a desired length. This ensures a satisfactory meshing of the helical threads and their correct positioning relatively to the carrier strips and a drawing up of the double chain-stitch seam is avoided.
- FIG. 1 shows an enlarged cross-section through a helical thread with an attachment cord wound on
- FIG. 2 shows a schematic enlarged cross-section through a set of fastener elements of a helical thread fastener
- FIG. 3 shows a longitudinal section along the line Ill-411 of FIG. 2.
- a profiled helical thread or stringers 1 which advantageously is made from an organic plastic material, is linked to an attachment cord 2 by means of a helical double thread 3, which is wound on cord 2 and engages each of the windings of the thread 1.
- threads 3 may be and preferably is very resistant to wear and advantageously consists of a polyamide or polyurethane thread under tension. The purpose of this wear resistant thread will be explained later.
- two opposed helical threads 1 with their cords are enmeshed by means of a slider and are then fed to a double chain-stitch sewing machine together with two carrier strips 4 which are positioned above the cords 2, the cords 2 being arranged in the vicinity of the facing edges of the strips 4, so that the loops of an under-thread 5, which are held by means of loops, an upper thread 6 stitched through the carrier strip 4 and the attachment cord 2, form together with the attachment cord 2 and its linking threads a guide strip of sufficient height for the slide of the fastener.
- the upper thread 6 When sewing with a double chain-stitch sewing machine, the upper thread 6 primarily determines the strength of the seam, whilst the loops of the under-thread 5, according to the thickness, hardness and surface condition e.g. roughness of the under-thread, strengthens the attachment cord 2 in the desired manner and adapts it to the height of the sliders to be employed.
- the inner sides of the slider flange on the side turned away from the helical thread 1 glide along the attachment cord 2, its linking threads 3 and the interlocked loops of upper-thread 6 and under-thread 5 of the seam.
- This gliding movement after a time causes wear.
- one of the linking threads should be made from a wear-resistant material, which prevents the other one of the two linking threads 3 from being broken due to wear, and thus avoids damage to the fastener.
- a slide fastener structure comprising a helical filamentary slide fastener member made of plastic material, an attachment cord disposed axially parallel to the axis of said member, a pair of juxtaposed threads helically wound around the cord, said threads having spaced turns linked to each turn of the helical fastener member and holding the same adjacent to said cord, one of said threads being formed of a synthetic resin material, a carrier-strip overlaying said cord and fastener member, and a double chain stitched seam securing. the cord to said strip, said seam having a first other thread formed with a chain of spaced loops extending through said cord with bights of the loops extending below the cord 3.
- said stitching having a second other thread formed with a chain of groups of three loops each, each group of loops of the second other thread having portions engaged with one preceding and one succeeding adjacent loop of the chain of loops of the first other thread to form a strip of fabric under the cord and under the helical slide fastener member, said strip defining with said cord and with the first named pair of threads a guide for a slider of the slide fastener.
Landscapes
- Sewing Machines And Sewing (AREA)
- Slide Fasteners (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEO5585A DE1054933B (de) | 1957-07-02 | 1957-07-02 | Schraubenfederreissverschluss und Vorrichtung zu seiner Herstellung |
Publications (1)
Publication Number | Publication Date |
---|---|
US2996780A true US2996780A (en) | 1961-08-22 |
Family
ID=7350628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US745901A Expired - Lifetime US2996780A (en) | 1957-07-02 | 1958-07-01 | Slide fastener structure employing helical fastener member |
Country Status (7)
Country | Link |
---|---|
US (1) | US2996780A (fi) |
BE (1) | BE569102A (fi) |
CH (1) | CH362999A (fi) |
DE (1) | DE1054933B (fi) |
FR (1) | FR1197493A (fi) |
GB (1) | GB899246A (fi) |
NL (2) | NL228984A (fi) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3255504A (en) * | 1958-02-06 | 1966-06-14 | Opti Holding Ag | Slide fasteners |
US4736495A (en) * | 1986-04-15 | 1988-04-12 | Opti Patent-, Forschungs- Und Fabrikations- Ag | Slide fastener with prefabricated coupling element |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3147529A (en) * | 1960-05-09 | 1964-09-08 | Walter Erich Heilmann | Coil fastener |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE498008A (fi) * | ||||
US777973A (en) * | 1903-10-10 | 1904-12-20 | Emma Perlich | Fastening device. |
US2198345A (en) * | 1938-11-05 | 1940-04-23 | Prentice G E Mfg Co | Apparatus for and method of making fasteners |
US2300442A (en) * | 1939-11-16 | 1942-11-03 | Wahl Brothers Inc | Separable fastener |
US2306873A (en) * | 1942-06-09 | 1942-12-29 | John H Feist | Slide fastener |
US2497821A (en) * | 1945-02-16 | 1950-02-14 | United Carr Fastener Corp | Slide fastener |
US2511414A (en) * | 1946-09-05 | 1950-06-13 | Talon Inc | Slide fastener |
US2643432A (en) * | 1950-05-06 | 1953-06-30 | William W English | Slide fastener |
US2858592A (en) * | 1953-04-02 | 1958-11-04 | Cue Fastener Inc | Method of making slide fasteners and the resulting product |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1926217A (en) * | 1933-09-12 | Fastening device | ||
US1937297A (en) * | 1924-08-22 | 1933-11-28 | Hookless Fastener Co | Helical separable fastener |
US1734165A (en) * | 1927-12-14 | 1929-11-05 | Hookless Fastener Co | Tape for stringers for separable fasteners |
US1853635A (en) * | 1930-07-12 | 1932-04-12 | Hookless Fastener Co | Fastener |
US2067734A (en) * | 1932-01-19 | 1937-01-12 | Waldes Kohinoor Inc | Interlocking fastener structure |
US2567160A (en) * | 1946-06-29 | 1951-09-04 | Wahl Brothers | Separable fastener |
FR1007539A (fr) * | 1950-01-03 | 1952-05-07 | Fermeture à curseur, procédé de fabrication et appareil pour sa mise en oeuvre | |
DE1068192B (de) * | 1954-03-16 | 1959-11-05 | Wahl Brothers, New York, N. Y. (V.St.A.) | Reißverschluß und Verfahren zu seiner Herstellung |
FR1123643A (fr) * | 1954-05-18 | 1956-09-25 | Stahlwerk Kabel C Pouplier Jr | Procédé de fabrication de fermetures à curseur composées de deux bandes de jonction en tissu avec deux organes de fermeture formés d'hélices de sens contraire, simples, doubles ou multiples et ayant même pas, et d'un curseur |
DE1745608U (de) * | 1957-03-07 | 1957-05-29 | Wolfram Dittmayer | Reissverschlussband. |
-
0
- BE BE569102D patent/BE569102A/xx unknown
- NL NL101346D patent/NL101346C/xx active
- NL NL228984D patent/NL228984A/xx unknown
-
1957
- 1957-07-02 DE DEO5585A patent/DE1054933B/de active Pending
-
1958
- 1958-06-13 CH CH6055858A patent/CH362999A/de unknown
- 1958-06-30 FR FR1197493D patent/FR1197493A/fr not_active Expired
- 1958-07-01 US US745901A patent/US2996780A/en not_active Expired - Lifetime
- 1958-07-02 GB GB21212/58A patent/GB899246A/en not_active Expired
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE498008A (fi) * | ||||
US777973A (en) * | 1903-10-10 | 1904-12-20 | Emma Perlich | Fastening device. |
US2198345A (en) * | 1938-11-05 | 1940-04-23 | Prentice G E Mfg Co | Apparatus for and method of making fasteners |
US2300442A (en) * | 1939-11-16 | 1942-11-03 | Wahl Brothers Inc | Separable fastener |
US2306873A (en) * | 1942-06-09 | 1942-12-29 | John H Feist | Slide fastener |
US2497821A (en) * | 1945-02-16 | 1950-02-14 | United Carr Fastener Corp | Slide fastener |
US2511414A (en) * | 1946-09-05 | 1950-06-13 | Talon Inc | Slide fastener |
US2643432A (en) * | 1950-05-06 | 1953-06-30 | William W English | Slide fastener |
US2858592A (en) * | 1953-04-02 | 1958-11-04 | Cue Fastener Inc | Method of making slide fasteners and the resulting product |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3255504A (en) * | 1958-02-06 | 1966-06-14 | Opti Holding Ag | Slide fasteners |
US4736495A (en) * | 1986-04-15 | 1988-04-12 | Opti Patent-, Forschungs- Und Fabrikations- Ag | Slide fastener with prefabricated coupling element |
Also Published As
Publication number | Publication date |
---|---|
FR1197493A (fr) | 1959-12-01 |
NL101346C (fi) | |
BE569102A (fi) | |
NL228984A (fi) | |
GB899246A (en) | 1962-06-20 |
CH362999A (de) | 1962-07-15 |
DE1054933B (de) | 1959-04-16 |
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