| 摘要 |
PCT No. PCT/SE92/00652 Sec. 371 Date Apr. 5, 1994 Sec. 102(e) Date Apr. 5, 1994 PCT Filed Sep. 21, 1992 PCT Pub. No. WO93/06280 PCT Pub. Date Apr. 1, 1993.An apparatus for the arrival monitoring of a weft in a jet loom with a reed pivotal between a first position and a second position. The reed has a longitudinal channel for the weft. An arm is mounted on the reed with the free end of the arm in the proximity of the longitudinal channel. The free end supports a light source and two light-sensitive elements. The light source is directed towards a central part of the channel for illuminating the rear portion of the channel. One light-sensitive element is directed towards the upper corner of the channel, while the other light-sensitive element is directed towards the lower corner of the channel. |
