Abstract: A coupling strip for a slide fastener, which can be utilized as part of a stringer half together with a fabric tape of which it forms a part, or alone as a stringer half, is produced by crocheting at least two rows of knots using bearded (spring-type) or latch needles and respective yarn guides on a crocheting machine, a continuous coupling element in coil or meander form and composed of a synthetic resin monofilament being inserted as a weft across these rows.

Abstract: A slide fastener has a pair of tapes along confronting edges of which are provided respective rows of coupling elements in a ladder configuration with individual members being affixed together by a continuous textile strand, as one-arm rungs of the ladder. Each coupling member is molded unitarily and unbent, and comprises an upper portion and a lower portion separated by a plane parallel to a slide fastener plane. The head of each coupling member lies above this plane and is mushroom-shaped to have a neck reaching inwardly toward the respective edge of the tape. Flush with this plane but on the lower half of the coupling member are a pair of ledges which function to absorb forces transverse to this plane. The connecting yarn is embedded in the upper half which can be provided for connection to the tape.

Abstract: A method of and a sewing machine for affixing a continuous chain of coupling members for a slide fastener to a flexible support, e.g. a garment or a tape to be applied to a garment, utilizes a fabric fed by a mechanism below the worktable and a presser foot with a feeder above the worktable which advances the coupling chain in a composite movement including up-and-down and back-and-forth components. According to the invention, at least one of the drives is adjustable so that the increment of the displacement of the respective member (fabric or coupling chain) can be varied to ensure that the two members are stitched together free from undulations or corrugations after the stitching operation or any subsequent treatment to which the product may be subjected.

Abstract: An apparatus for producing small molded bodies with overhanging portions, e.g. for use as end stop members in slide fastener stringers, wherein a molding band is fed to a forming wheel to define individual molding cavities therewith, the cavities passing to a molding station at which a synthetic resin material is injected into the cavities. According to the invention, the band consists of a plurality of band members which upon being fed to the wheel, form a core with undercut formations around which the synthetic resin material is molded and, following molding, the band portions are laterally or orthogonally offset to release the articles drawn by the band out of forming beds on the wheel.

Abstract: An apparatus for forming coupling members of synthetic resin for application to a support tape in the production of a slide-fastener stringer comprises a forming wheel to which an endless band is fed to form mold cavities on the periphery of the wheel which are filled with synthetic resin. According to the invention, a further band is fed to overlie the first band and define undercut portions of the cavity to produce projections in the molded members which can engage when the latter are applied to a support tape. A continuous core can be fed to the drum periphery to be embedded in the coupling members as they are formed so that the row of coupling members is produced as a succession of teeth on this continuous element.

Abstract: A slide fastener comprising a pair of tapes and respective rows of slide-fastener elements individually secured to the tapes. The slide-fastener elements are each bent over an edge of the tape and welded together thermally or ultrasonically. The arms of the fastener elements are formed along their lateral surfaces or sides with grooves of increasing depth toward the respective tape and weft yarns, interwoven with the warp of the tape, are provided along the edge and are disposed in the grooves to provide torsional stability for the individual coupling elements.

Abstract: A method of and an apparatus for the formation of slide-fastener stringers wherein coupling members of a thermoplastic synthetic resin are bent into a U configuration to straddle the edges of respective fabric support tapes also composed of thermoplastic synthetic-resin filaments or yarns at least in the region in which the tape is straddled by the shanks of each coupling member. The shanks of the coupling members are thermally welded together through the tape and thereby also bonded to the filaments or yarn between the shanks; thereafter the tapes bearing the coupling members are subjected to thermofixing i.e. heating to shrink the tapes thereby condensing the meshes formed by the yarn or filaments.

Abstract: Continuous coupling elements, e.g. coils of synthetic-resin monofilament, preferably in an interconnected state, are heated to a thermofixing temperature and, with the aid of additional ultrasonic energy and pressure, have upper shanks of each coupling member deformed to provide recesses adapted to receive the stitches for attachment of the coupling elements to a support tape.

Abstract: A fastener of the type in which two arrays of spaced-apart coupling heads are juxtaposed and pressed together, either with or without a slider, so that the heads of one array or row are received in the inter-head spaces of the other row and vice versa, is provided with a pair of spaced apart connecting strands extending the full length of the respective row and integral (unitary) with the coupling heads or their connecting shanks. The strands, molded monolithically with the remainder of the unit, flexibly interconnect the coupling heads and serve as stops for relative lateral movement of the rows upon their interconnection.

Abstract: A slide fastener with separable end stop members including an insertion member and a reception member each associated with a respective row of coupling elements on a stringer half. The members have complementary offset steps orthogonal to the slide fastener plane to prevent relative displacement of these members when they are interfitted in a direction perpendicular to the slide fastener plane and are mutually engageable. A slider of generally Y-shaped channel configuration can be displaced upon the rows of coupling elements to interconnect and disconnect them. The slider has arcuate slider flanks receiving the insertion and reception members between them and these members have arcuate surfaces corresponding to the curvature of these flanks and engageable therewith. An abutment is provided to enable the coupling element to be drawn over one of these members, namely, the reception member, in a unidirectional manner and preventing withdrawal of the slider in the opposite direction.

Abstract: A slide-fastener stringer half has an elongated warp-knitted tape having a pair of opposite faces and a pair of opposite longitudinally extending edges. The tape is knit with a plurality of chained warp yarns each forming a respective longitudinally extending loop chain or pillar defining a respective longitudinally extending wale, a first weft filament laid into and extending over two of the chains at one of the edges of the tape, a group of second weft yarns lapped into the chains across the full width of the tape, and a group of third weft yarns laid into all of the chains except that chain immediately at the one edge. A continuous mono-filamentary coupling element having a succession of turns is secured to one face of the tape along the one edge by stitching which overlies the turns, extends through the tape, and has a needle thread on the other face of the tape between two of the chains at the one edge.

Abstract: A slide fastener with separable endstop members has its endstop members formed with a plug and socket arrangement whereby one endstop member can be fitted into the other endstop member generally transversely to the plane of the slide fastener stringer. The male or plug member can form a pivot pin about which the other member is swingable into a slot in the slider.

Abstract: A slide-fastener stringer half comprises a knit tape having a plurality of parallel longitudinally extending wales and a plurality of transversely extending courses, and a monofilamentary coupling element on the tape and having a succession of turns each having a pair of shanks and a coupling head joining the shanks and projecting transversely beyond the longitudinal edge of the tape. The shanks of each turn lie at least in regions adjacent the respective head in a plane generally perpendicular to the tape. The tape comprises at least one warp yarn forming a chain knitted into the tape at every other course and overlying the shanks at the regions adjacent the heads. Thus the shanks are laid into the chains at these regions so that the coupling element is thoroughly integrated into the knit of the tape. The tape itself may be formed of a full-tricot ground. Alternatively the tape can be formed of second weft yarns having open loops at each course and extending transversely each over two respective wales.

Abstract: A warp-knit slide-fastener stringer half comprises an elongated warp-knitted tape having a pair of opposite faces and a pair of opposite longitudinally extending edges. The tape is knit with a plurality of warp yarns forming longitudinally extending parallel wale-forming chains, a first group of weft yarns laid into and each extending over only three of the chains, and a second group of weft yarns laid into and each extending over only two of the chains. A continuous monofilamentary coupling element having a succession of turns lies on one face of the tape along one edge thereof and is secured thereto by double-lock stitching which overlies the turns, extends through the tape and has a needle thread on the other face of the tape between two of the wales formed by the chains at the edge. The warp-chain-forming yarns and the weft yarns or either of these in the alternative can be composed of shrinkable threads and thermofixed.

Abstract: A fastener of the type in which two arrays of spaced-apart coupling heads are juxtaposed and pressed together, either with or without a slider, so that the heads of one array or row are received in the inter-head spaces of the other row and vice versa, is provided with a pair of spaced apart connecting strands extending the full length of the respective row and integral (unitary) with the coupling heads or their connecting shanks. The strands, molded monolithically with the remainder of the unit, flexibly interconnect the coupling heads and serve as stops for relative lateral movement of the rows upon their interconnection.

Abstract: A slide fastener with separable endstop members has a pair of stringer halves with respective rows of coupling members or heads adapted to interdigitate upon movement of a slide therealong. At an end of the stringer one of the slide fastener halves is provided with a pintle while the other slide half has its endstop member formed with a knuckle enabling one endstop member to pivot about the pintle axis relative to the other laterally and into the slider preparatory to closure of the slide fastener. A hook on one of the endstop members remote from the pintle engages the other endstop member to hold the two together. According to the invention, one of the endstop members forms a double armed lever fulcrumed between the pintle and the hook so that, upon engagement of the hook, the pintle is retained forcibly against its seat.

Abstract: A slide-fastener stringer half comprises a knit tape having a plurality of parallel longitudinally extending wales and a plurality of transversely extending courses, and a monofilamentary coupling element on the tape and having a succession of turns each having a pair of shanks and a coupling head joining the shanks and projecting transversely beyond the longitudinal edge of the tape. The shanks of each turn lie at least in regions adjacent the respective head in a plane generally perpendicular to the tape. The tape comprises at least one warp yarn forming a chain knitted into the tape at every other course and overlying the shanks at the regions adjacent the heads. Thus the shanks are laid into the chains at these regions so that the coupling element is thoroughly integrated into the knit of the tape. The tape itself may be formed of a full-tricot ground. Alternatively the tape can be formed of second weft yarns having open loops at each course and extending transversely each over two respective wales.

Abstract: A slide-fastener support tape is made in a warp-knitting machine which chains a plurality of relatively thin warp yarns to form an array of longitudinally extending and transversely spaced wales. One of the needles of the knitting machine is left empty so as to space the edgemost warp yarn from the other warp yarns by a gap corresponding to the transverse width of one wale. A relatively thick warp yarn is blind-lapped into this gap. A group of first weft yarns is laid into the warp yarns to one side of the thick yarn and a group of second weft yarns is lapped into the warp yarns with loop formations to the other side of the thick yarn. It is also possible to provide a second such thick yarn in the tape, held in place by a group of third weft yarns which are also lapped into the tape.

Abstract: A slide-fastener stringer half comprises an elongated warp-knitted tape having a pair of opposite longitudinally extending edges and a pair of opposite faces and formed with a plurality of longitudinally extending parallel wales. This tape is knit with a plurality of warp yarns each forming a respective lontidudinally extending loop chain extending transversely over two respective wales or needles, a first group of weft yarns laid into and each extending over three of the wales, and a second group of weft yarns laid into and each extending over one of the wales. A continuous monofilamentary coupling element having a succession of turns and lying on one face of the tape along one edge thereof is secured to the tape by stitching which overlies the turns, extends through the tape, and has a needle thread on the other face of the tape between two of the wales at the edge.

Abstract: Individual coupling members, molded from synthetic resin onto a support tape and straddling an edge thereof are removed, e.g. to enable the mounting of a slider, the stitching of the tape to a fabric or other carrier or for the formation of end-stop members, by applying orthogonal to the stringer plane a pressure causing plastic deformation and flow of the material of the coupling member which results in a spreading of the fastening shanks thereof. The tape is then withdrawn from between the legs or shanks which have been thus spread apart or the coupling member is withdrawn from the edge of the tape generally in the aforementioned plane.