Regulation of electronically operated quality control equipment

Abstract

A method for regulating the operation of yarn clearers having error correcting means such as yarn cutters, and sensing means providing an electrical signal representative of the controlled quality. The method comprises the steps of: feeding the signal from the sensing means to two independent electrical circuit channels each having separate threshold switch means, the threshold switch means of one circuit responsive to signals corresponding to yarn faults of given magnitude. The threshold switch means of the other circuit responds to signals corresponding to faults of given duration. Thereafter, an independent control signal is obtained from each of said channels for initiating the operation of the cutters when a limiting value selected for each of said two channels is exceeded.

Dependencies are inferred from the claim text.