US3633257A - Method of making a slide-fastener stringer - Google Patents

Method of making a slide-fastener stringer Download PDF

Info

Publication number
US3633257A
US3633257A US824524A US3633257DA US3633257A US 3633257 A US3633257 A US 3633257A US 824524 A US824524 A US 824524A US 3633257D A US3633257D A US 3633257DA US 3633257 A US3633257 A US 3633257A
Authority
US
United States
Prior art keywords
coupling element
warp thread
tapes
wedge
fabric
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
US824524A
Other languages
English (en)
Inventor
Helmut Heimberger
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.)
Opti Holding AG
Original Assignee
Opti Holding AG
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 Opti Holding AG filed Critical Opti Holding AG
Application granted granted Critical
Publication of US3633257A publication Critical patent/US3633257A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Definitions

  • the openings are formed by pushing back at least one warp thread extending parallel to the coupling element by thrusting a wedge-shaped needle or lance into the weave.
  • a plurality of such lances may be provided in transversely staggered longitudinally spaced relation to force back the warp thread in successive stages.
  • My present invention relates to slide fasteners of the type in which a coupling element is provided upon each of the mutually confronting edges of a pair of support or carrier tapes or bands for intermeshing upon movement of a slider along the coupling elements in one direction and for disengagement upon movement of the slider in the opposite direction; more particularly, the invention is directed to an arrangement for facilitating the application of a separable slide fastener of this type to a garment or other sheetlike member upon which the closure is to be mounted, and to a method of making the improved slide fastener and an apparatus for carrying out this method.
  • the coupling elements are generally stitched to the support tapes or are held in place therein by passing the coupling heads of each element through a respective opening formed between the threads of the fabric (knitted or woven) tape so that the threads of the latter tightly hug the shanks of each coupling head and may be shrunk therearound to anchor the coupling elements in place.
  • a core or fillet or bead of flexible material extends within or along the coupling element and the latter is held in place by stitching the turns of the coupling element and its fillet, core or bead in place by a single or double chain stitch which also has the function of accurately positioning the shanks and thereby separating the coupling heads.
  • the present invention is primarily concerned with slide-fastener stringers or stringer halves of this general type.
  • the principal object of the present invention to provide an improved slide-fastener stringer, or stringer half, having a longitudinal array of uniformly spaced openings parallel to the coupling element and free from the disadvantages of earlier systems, i.e. high cost, limited accuracy, and a tendency to weaken the region between the point at which the coupling element is affixed to the support tape and the location at which the tape is secured to the substrate or fabric article.
  • Another object of my invention is the provision of an improved method of making a slide-fastener stringer, or stringer half, in which the disadvantages of earlier methods are avoided and the aforedescribed row of longitudinally spaced openings can be formed with a minimum of difficulty, in a conveniently regulatable manner with respect to the size and location of the openings and at relatively low cost.
  • Still another object of my instant invention is the provision of an improved apparatus for forming a longitudinal array of openings in a slide-fastener stringer or stringer half, which obviates the need for the storage of quantities of tape with different numbers of rows of such openings, with a variety of interopening spacings, and with various positional differences of the array of openings.
  • a system for forming a longitudinal array of openings in a support tape of a slide-fastener closure whereby one or more warp threads, extending parallel to the edge of the support tape at which the coupling element is or is to be situated, are thrust laterally, preferably away from this edge and/or the coupling element, through a distance of about 1 mm. or more, to form the row of openings without piercing or rupturing the displaced thread.
  • the warp thread of the woven fabric tape is pushed to the side in a succession of stages by the repeated and periodic insertion into the fabric of wedge-shaped needles staggered progressively outwardly and one behind the latter in the longitudinal direction, the support tape being advanced with respect to these needles.
  • the thread-displacement needles may be mounted upon the vertically reciprocable shank of a sewing machine whose pressure foot bears upon the fabric tape in the region in which the needles are thrust through this tape.
  • the slide-fastener stringer thus comprises two support tapes having mutually confronting longitudinal edges upon which are fastened respective continuous coupling elements of the aforedescribed type, the coupling elements being interengageable in the usual manner upon movement of a slider of conventional construction therealong.
  • Each of the support tapes is formed with one or more rows of openings and intervening strands of the fabric of the type to accommodate cooperating formations, members or needles of the stitching machine whereby the tape is mounted upon a fabric or other member to be provided with the slide-fastener closure.
  • the stringer preferably with its coupling elements in an interlocked condition, is advanced continuously or periodically past the opening-forming location at which respective arrays of wedge-shaped needles, flanking the coupling elements on each side thereof, are thrust momentarily through the support tapes with the aid of a sewing machine drive to wedge respective warp threads laterally outwardly through approximately the distance between each pair of adjoining warp threads.
  • the warp-thread-free zones constitute formations at which the support bands are tied to the garment and cooperate with the needles of the binding-off machine, i.e. enabling the support tape to be placed upon the needles of the latter machine.
  • each wedging needle having along the side facing the coupling element, a flank extending perpendicular to the support tape while its flank facing away from the coupling element diverges outwardly from the vertical or perpendicular flank.
  • the shift of the warp thread in accordance with the present invention has been found to be advantageous also in that the warp thread tends to remain in its shifted position and the band or tape can be displaced, stored or otherwise handled without any danger that the openings thus provided will close by a return of the warp thread to its original position.
  • the formation of the openings or the needle-accommodating row, according to the present invention can be effected with ease, without weakening of the fabric tape, can be formed close to the coupling elements and, as a practical matter, can have any desirable width, e.g. from one to several millimeters.
  • the asymmetrical lances or needles which serve to displace the warp thread, can be conveniently mounted on a sewing machine ram, can be provided in any desirable number and with any desirable spacing, and can have rounded ends of a width such that they do not pierce the threads.
  • they are spaced apart in the direction of advance of the band by approximately the spacing of the weft threads and, as viewed in the direction of movement of the band, laterally overlap.
  • FIG. 1 is a perspective view of a slide-fastener stringer embodying the present invention
  • FIG. 1A is a detail view drawn to an enlarged scale ofa region of FIG. 1;
  • FIG. 1B is a view similar to FIG. 1A of another stringer portion mounted upon an article
  • FIG. 2 is an end view of the apparatus for shifting the warp thread in accordance with the present invention, the stringer being shown in cross section in a plane perpendicular to its longitudinal direction;
  • FIG. 3 is a side view of the apparatus of FIG. 2;
  • FIG. 4 is a diagrammatic illustration showing how the wedge-shaped needles or lances of the present invention displace the warp thread.
  • FIGS. 1 and LA I have shown a slide-fastener stringer, the slider of which may be of any conventional type and which may be provided with end-stop members as described in the aforementioned copending applications and which comprises a pair of woven support tapes 1 and 2, whose confronting edges la and 2a, are formed with respective coupling elements 3, 4 whose heads are interfitted as shown in FIG. 1 and which are anchored to the support tapes by rows 31: (FIG. 1) and 4a of chain stitches which are looped over the shanks (e.g. 4b of FIG. 1A) and which extend through respective fillets 3c and 4c received within the helical coupling elements.
  • the coupling elements are here shown as flattened helices of a nylon-type monofilamentary synthetic resin (see the aforementioned applications) and can be any conventional continuous coupling elements, e.g. coupling elements of the undulated type as well.
  • a woven fabric substrate is shown at F in FIG. 1B and has thread loops L extending around the stretches 7a of weft threads in the respective arrays to secure the tape 2 to the article F.
  • the fabric tape 2 is composed of a set of transversely extending, equispaced weft threads 7 interweaved with the warp threads 6 which extend parallel to the coupling elements and orthogonally to the weft 7.
  • a warp thread 6a is shifted from its normal position to the right (FIG. 1A) to form the array 5 of the needle-receiving openings 5a spaced apart by the strips 7a of the weft 7.
  • warp thread 60 bears against the adjacent thread 6b which, in turn, has been shifted slightly to the right toward the thread 60.
  • the warp-free zones 5 and 5 thus constitute arrays of openings 5a which can be thrust onto the needles ofa bind-off machine.
  • the thread 6a may be shifted away from the coupling element 4 to a distance d of, say, l to 4 mm.
  • FIGS. 2-4 I show the apparatus for forming the warpfree zones 5 of FIGS. 1, IA and 1B.
  • the apparatus comprises a sewing machine ram or spindle 15 which is vertically reciprocable by the sewing machine drive represented at 16 and as indicated by the arrow 17a.
  • the band 1, 2 is held down by a pressure foot 17 while the band is advanced to the left past the lance location as represented by the arrow 18 via a feed device shown in FIG. 3.
  • the feed device comprises a weighted sprocket wheel 19 engageable with the turns of the coupling elements 3, 4 and rotated periodically in the clockwise sense (arrow 20) by a reciprocating pawl 21 whose motion is represented by the arrow 22 and which is coupled with the sewing-machine drive
  • three longitudinally offset needles l0, 9, 8 serve to displace the thread 6a through the desired dim ension, exaggerated in FIG. 2 and represented by the dimension D, the needles 8, 9, l0 overlapping successively when viewed from the end (FIG. 2).
  • the needles are transversely staggered (FIG. 2) and are of lance configuration with slightly rounded points receivable between each pair of adjacent warp and each pair of adjacent weft threads.
  • the lances each have a straight flank 23 extending vertically (FIG. 2) and perpendicular to the plane of the fabric (FIG. 4) as well as a flank 12 inclined to this perpendicular flank inwardly with respect to the coupling element in the direction in which the lance is thrust through the fabric.
  • the width w of the rounded tip 11 of each lance is less than the normal center-to-center spacing S of the warp thread 6a while the base of the wedge has a width W exceeding the interthread spacing and designed to push the thread 6a to the right (FIG. 4).
  • a wedge member having a row of wedge elements between the adjacent weft threads to displace at least one of the wrap threads out ofits original position to form openings accommodating said needles upon each increment of displacement of said tapes, said wedge elements of said row being offset in the longitudinal direction and having wedging surfaces successively spaced at greater distances from the coupling element and thrust simultaneously between the respective pairs of weft threads to shift said warp thread in a plurality of stages.

Landscapes

  • Slide Fasteners (AREA)
  • Sewing Machines And Sewing (AREA)
US824524A 1968-05-15 1969-05-14 Method of making a slide-fastener stringer Expired - Lifetime US3633257A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1760414 1968-05-15

Publications (1)

Publication Number Publication Date
US3633257A true US3633257A (en) 1972-01-11

Family

ID=5696075

Family Applications (1)

Application Number Title Priority Date Filing Date
US824524A Expired - Lifetime US3633257A (en) 1968-05-15 1969-05-14 Method of making a slide-fastener stringer

Country Status (8)

Country Link
US (1) US3633257A (enrdf_load_stackoverflow)
BE (1) BE732896A (enrdf_load_stackoverflow)
CH (1) CH490036A (enrdf_load_stackoverflow)
ES (2) ES367270A1 (enrdf_load_stackoverflow)
FR (1) FR2008577A1 (enrdf_load_stackoverflow)
GB (1) GB1238766A (enrdf_load_stackoverflow)
IL (1) IL32170A (enrdf_load_stackoverflow)
NL (1) NL6907383A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539733A (en) * 1982-09-30 1985-09-10 Yoshida Kogyo K. K. Separable slide fastener
US20100024986A1 (en) * 2007-02-14 2010-02-04 Toyo Tire & Rubber Co., Ltd. Perforating apparatus for tire constituent member

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US692347A (en) * 1901-04-29 1902-02-04 George O Redpath Comb for spacing the mesh of woven fabrics.
US737012A (en) * 1902-03-29 1903-08-25 Singer Mfg Co Two-needle hemstitch sewing-machine.
US1724463A (en) * 1929-08-13 Device fob making bugs
US1828879A (en) * 1929-08-19 1931-10-27 Victor J Sigoda Hemstitch attachment for sewing machines
US1848029A (en) * 1928-02-13 1932-03-01 Schindelheim Harry Attachment for hemstitching machines
US1980705A (en) * 1932-05-06 1934-11-13 Victor J Sigoda Intermediate course hemstitching and sewing machine attachments for producing the same
US3444598A (en) * 1965-04-13 1969-05-20 Prym Werke William Sliding clasp fasteners

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1724463A (en) * 1929-08-13 Device fob making bugs
US692347A (en) * 1901-04-29 1902-02-04 George O Redpath Comb for spacing the mesh of woven fabrics.
US737012A (en) * 1902-03-29 1903-08-25 Singer Mfg Co Two-needle hemstitch sewing-machine.
US1848029A (en) * 1928-02-13 1932-03-01 Schindelheim Harry Attachment for hemstitching machines
US1828879A (en) * 1929-08-19 1931-10-27 Victor J Sigoda Hemstitch attachment for sewing machines
US1980705A (en) * 1932-05-06 1934-11-13 Victor J Sigoda Intermediate course hemstitching and sewing machine attachments for producing the same
US3444598A (en) * 1965-04-13 1969-05-20 Prym Werke William Sliding clasp fasteners

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539733A (en) * 1982-09-30 1985-09-10 Yoshida Kogyo K. K. Separable slide fastener
US20100024986A1 (en) * 2007-02-14 2010-02-04 Toyo Tire & Rubber Co., Ltd. Perforating apparatus for tire constituent member

Also Published As

Publication number Publication date
ES148595Y (es) 1970-04-16
BE732896A (enrdf_load_stackoverflow) 1969-10-16
NL6907383A (enrdf_load_stackoverflow) 1969-11-18
GB1238766A (enrdf_load_stackoverflow) 1971-07-07
IL32170A0 (en) 1969-07-30
IL32170A (en) 1972-02-29
ES148595U (es) 1969-09-01
FR2008577A1 (enrdf_load_stackoverflow) 1970-01-23
ES367270A1 (es) 1971-04-01
CH490036A (de) 1970-05-15

Similar Documents

Publication Publication Date Title
US3864945A (en) Slide fastener and method of making same
US3783476A (en) Slide fastener stringer with stitched coupling element
KR970008149B1 (ko) 니트 슬라이드 파스너
GB1299913A (en) A sliding clasp fastener with knitted stringer tapes
US3714683A (en) Slide-fastener stringer with stitched-on coupling element
US4075874A (en) Slide-fastener stringer half with knitted-in coupling elements and method of making same
US3290747A (en) Plastic zippers and method of making the same
US3750605A (en) Sliding clasp fasteners
ES370965A1 (es) Perfeccionamientos en cierres de corredera.
US3708836A (en) Warp-knit slide-fastener stringer
US3665561A (en) Slide fastener stringer
DE69610244T2 (de) Gewirkter Reissverschluss
US3633257A (en) Method of making a slide-fastener stringer
US4498502A (en) Apparatus for manufacturing a woven slide fastener stringer
US3901291A (en) Slide fastener stringer with a continuous coupling element woven into a fabric tape
US3069723A (en) Sliding-clasp fasteners
US4492098A (en) Method of making a slide fastener coupling strip
US4067208A (en) Warp-knit slide-fastener support tape and method of making same
US3880203A (en) Slide fastener with woven fabric support and process for making same
US4137733A (en) Slide-fastener-stringer half with knitted-in coupling elements and method of making same
US4134185A (en) Warp-knit slide-fastener stringer half and method of making same
GB2038408A (en) Slide fastener stringer
KR920002499B1 (ko) 제직 슬라이드 파스너 스트링거와 그의 제조방법 및 장치
US3316870A (en) Method of making coil type zipper fastener stringers
JPH05184414A (ja) 織成支承テープとこれに織り込まれた閉鎖噛合部材列を有するスライドファスナー