Process and device for watching the weft on weaving looms

摘要

The invention pertains to a process for watching the weft thread of weaving looms, characterized by the fact that it consists in preparing a stop signal for the weaving loom, each time the weft carrier has completely left the shed; in checking for the presence of the weft thread behind the weft carrying means, just outside the shed, and in cancelling aforesaid stop signal if thread is present, respectively in making use of the stop signal if thread is absent.