Abstract: In a circular loom a weft failure indicator system includes means for issuing a signal that a weft failure has occurred on the shuttle, and a detector adapted to detect the weft failure signal, the detector being located on a stationary part of the loom and adapted to receive signals at all positions around the path of the shuttle. This provides a more rapid response to weft failure than systems in which the signal is only detected once in every revolution of the shuttle.The shuttle signal is a radio frequency signal and the detector a circular aerial.

Abstract: A travelling yarn dispenser for use in a textile machine, particularly a circular loom shuttle has an electric generator the rotor of which is adapted to be driven by yarn leaving the dispenser. In the preferred construction the driving member of the generator frictionally engages with the yarn carrier, which is mounted for rotation in the dispenser.Several arrangements for using the current generated by the generator to give weft failure signals and pick-up means adapted to co-operate with these arrangements are described.