TUFTING MACHINE STOP MOTION EMBODYING LIGHT BEAM AND SENSOR WITH TRIGGERING CIRCUIT RESPONDING TO YARN BREAKS

摘要

A multi-needle carpet tufting machine receives yarn ends through a guide and feed roll system from a supply beam or an overhead creel. One or more light beam or ray energy sources and coacting photoconductive detector units are so positioned with relation to the machine that a broken yarn end at substantially any point in the system will cause interruption of a light beam and instant activation of an electronic triggering circuit which may be wired directly into the motor control switch of the machine to stop the machine. Many common difficulties with tufting machines are thus overcome.