PHOTOELECTRIC WEFT-BOBBIN FEELER FOR LOOMS FOR MONITORING THE YARN STOCK ON WEFT BOBBINS

摘要

The bobbin and/or shuttle are provided with light-responsive conditions such that two types of reflective light responses are created by a single-incident light beam. The two responses are received by two separate light detectors and a correctional signal is produced only if the two detectors simultaneously produce output signals.