| 摘要 |
1492121 Concealed type sliding clasp fasteners YOSHIDA KOGYO KK 10 Sept 1975 [25 Sept 1974] 37221/75 Heading E2S [Also in Division D1] A concealed type of sliding clasp fastener comprising a pair of warp-knit support tapes 11, 11 each having a longitudinal element carrying edge 21 inwardly folded on itself, rows of fastener elements 12, 12 secured to respective element carrying edges, each of said fastener elements having leg portions 13, 14 a coupling head portion 15 merging into said leg portions and connecting portions 16 remote from said coupling head 15 and connecting the element to respective adjacent elements, and the support tapes 11, 11 having on one surface a multiplicity of longitudinally extending alternated wales 19 and interwale grooves 20 is characterised in that the number of knitting threads forming the wales is reduced at the wale region of each support tape which is located adjacent the path of a sewing needle N as compared to the number of knitting threads at the remaining regions of the tape, whereby each support tape can be sewn onto a garment fabric in such a manner that the sewing needle provides a sewn seam at, and along the inwardly folded edge of the tape. As shown, the number of knitting threads which form the wale 19d adjacent the fold 22 of each tape 11 is reduced from the number employed for the remaining wales by omitting from the wale 19d chain stitches 11a and reinforcing warp threads 11d as shown in Fig. 3 when the fastener is sewn to a garment fabric F a needle N is operated along a path P through the third endmost interwale groove 20a adjacent the reduced wale 19d of the respective tape 11, the lower loop density of the wale 19d rendering the neighbouring portion of the tape highly flexible for ease of folding and sewing. The upper legs 13 of each scoop of each continuous coil-type fastener element 12, which accommodates a filler cord 18, has recesses 17a, 11b which receive corresponding wales 19a, 19b along the edge 21 of the respective tape 11. which accommodates a filler cord 18, has recesses 17a, 17b which receive corresponding wales 19a, 19b along the edge 21 of the respective tape 11. |
