| 摘要 |
An apparatus for controlling the tension of a filament yarn, especially useful for those filament yarns applied to a warping machine, which apparatus being simple in structure and being provided between the pirn of the filament yarn and a take-up beam and arranged so that the filament yarn released from the pirn is passed through this apparatus longitudinally from one end to the other end thereof on a plurality of rotatable roller-like transverse guide members and also through at least one ring-like guide member movably supported, between two adjacent roller-like transverse guide members, on a fixed longitudinal supporting means positioned lower than the rod-like guide means. When the take-up operation of the beam stops abruptly for any reason, the running filament yarn can be brought to a half simultaneously without no overrun, due to the falling onto the supporting means of the movable ring-like guide member by its own gravity which is of a magnitude enough to allow movements of this guide member during the run of the filament yarn. Thus, the filament yarn is subject to an almost constant tension corresponding to the take-up velocity of the beam both during the run and during the rest. Also, during the run, oily agent and monomer of the filament yarn do not stick to the guide members. Thus, the resulting filament yarn enhances the quality of a product fabric.
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