Yoshida Kogyo K.k.

Yoshinori Nakada

Kiyoshi Takeshima

Ryukichi Murai

Masaaki Kojima

An apparatus for manufacturing a woven slide fastener stringer includes a first reed for beating a filling yarn through a shed of warp threads against the fell of a tape being woven and a second reed for beating a monofilamentary fastener element having successively interconnected convolutions in place along a longitudinal edge of the tape. The first and second reeds are actuated to alternate in their respective beating-up movements. The second reed is positioned to beat the element convolutions substantially centrally thereof away from their coupling head portions.

Double reed apparatus for manufacturing a woven slide fastener stringer

A slide fastener stringer comprises an elongate molded coupling element strip woven into a stringer tape along a longitudinal edge thereof. The strip includes a succession of laterally spaced coupling elements each having a pair of first and second legs, and a pair of series of first and second connecting portions extending respectively between alternate pairs of the first legs and between alternate pairs of the second legs in staggered relation with each other. A pair of connector threads is partially embedded in the first and second legs, respectively, of each coupling element and extends parallel to the first and second connecting portions, respectively, on the head side of the coupling elements. Each of the coupling elements has a pair of grooves extending transversely through a pair of first and second legs, respectively, on their outer sides, and disposed remotely from the connecting portions and from the connector threads. A pair of anchor threads is disposed in the grooves in the first legs and the grooves in the second legs, respectively, along the full length of the strips. A weft thread of the tape has a plurality of loops each encircling one of the first and second connecting portions, the connector threads, and the anchor threads between adjacent coupling elements, the weft loops being held out of contact with the connector threads.

Slide fastener stringer

A slide fastener chain comprises a pair of inter-engaged stringers including a pair of stringer tapes one longer than the other which have longitudinally staggered ends spaced from each other by a distance greater than the length of a slider which is to be mounted on the slide fastener chain. The coupling heads of a predetermined number of coupling elements on the longer stringer tape adjacent to the end of the shorter stringer tape and remote from the end of the longer stringer tape are cut off so that the coupling elements thus severed are kept uncoupled from opposite companion coupling elements on the shorter stringer tape. The slide fastener chain thus constructed can smoothly be threaded through the slider. The slide fastener chain in one form is fabricated by cutting a continuous slide fastener chain transversely fully thereacross to define a transverse edge of the chain, transversely fully across one of the stringers to form a transverse slit spaced from the transverse edge, and longitudinally across a certain number of coupling elements below the transverse slit to form a longitudinal slit cutting off the coupling heads, which are held between the opposite companion coupling elements.

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Kurobe, Japan

Yoshinori Nakada