| 摘要 |
PROBLEM TO BE SOLVED: To inhibit generation of weaving bar due to the occurrence of a momentary substantial tension down when a warp is dissociated from warp beam. SOLUTION: An unrotatable guide bar 30 guiding a warp thread 2 from a warp beam 1 to a back roller 4 side, is set at the neighborhood of the warp beam 1 beneath the horizontal position of the center of the axis of the warp beam 1 in a loom in which the warp thread 2 is drawn out from the warp beam 1 installed on the loom to the back roller 4. The guide bar 30 is set at the position where the warp thread 2 which is guided from the guide bar 30 to the back roller 4, may not contact with warp thread 2a fully wound on warp beam 1, so to inhibit a strip phenomenon caused by mutual frictional force between the warp threads, or the position where the angleαwhich is made between an extension line of the thread pass extending to the guide beam 1 side and an extension line of the thread pass extending to the back roller 4 side, becomes a sharp angle to the warp guided to the guide bar 30, affording to elongate the warp length wound on the guide bar 30.
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