| 摘要 |
PCT No. PCT/SE91/00185 Sec. 371 Date Nov. 12, 1992 Sec. 102(e) Date Nov. 12, 1992 PCT Filed Mar. 12, 1991 PCT Pub. No. WO91/14032 PCT Pub. Date Sep. 19, 1991.An easily movable output brake system forms part of or cooperates with a yarn feeder (13) comprising a spatially fixed body supporting a yarn store, from which body a yarn (11) can be drawn off even at advanced speed through an output channel (10). The system comprises a first member (9) which is arranged in a bearing and which, in the functional operation of the system, by means of a surface clamps the yarn being drawn off against a counterstay member (15). The members (9, 15) are designed to effect a yarn-cleaning function dependent on the yarn rotation upon drawing-off, with simultaneous prevention of considerable accumulation of lint, particles etc., in respect of the members. The mobility of the system is obtained by the selection of the components in question. The mobility gives an instantaneous yield and instantaneous return to the previously exerted braking/tensioning effect of a knot on the passing yarn and/or an instantaneous response to one or more controls for modifying the braking or tensioning force of the system during one and the same drawing-off of yarn (machine cycle).
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