Apparatus for measuring and controlling the amount of size and finish applied to textile yarns and fabrics

Claim 1

IN A TEXTILE MACHINE HAVING MEANS FEEDING A STRIP OF CONNECTED TEXTILE FIBERS THERETHROUGH, MEANS IMPARTING LIQUID SIZE TO THE STRIP OF CONNECTED TEXTILE FIBERS, MEANS VARYING THE AMOUNT OF LIQUID SIZE RETAINED BY THE STRIP, AND MEANS RECEIVING THE SIZE TREATED STRIP; THE IMPROVEMENT COMPRISING ELECTRICAL CONDUCTIVITY MEASURING MEANS INCLUDING A PAIR OF SPACED DETECTOR ELECTRODES CONTACTING SAID SIZE TREATED TEXTILE STRIP AND CONNECTED IN CIRCUIT WITH AN ELECTRIC VOLTAGE SOURCE TO PASS AN ELECTRIC CURRENT THROUGH THE SIZE TREATED TEXTILE STRIP INTERVENING SAID DETECTOR ELECTRODES FOR MEASURING THE ELECTRICAL CONDUCTIVITY OF THE SIZE TREATED STRIP OF CONNECTED TEXTILE FIBERS, ELECTRICAL CONDUCTIVITY MEASURING MEANS FOR MEASURING THE ELECTRICAL CONDUCTIVITY OF SAID LIQUID SIZE, MEANS CORRECTING THE ELECTRICAL CONDUCTIVITY MEASUREMENT OF SAID SIZE TREATED STRIP OF CONNECTED TEXTILE FIBERS FOR VARIATIONS IN ELECTRICAL CONDUCTIVITY OF THE LIQUID SIZE, MEANS UTILIZING THE CORRECTED ELECTRICAL CONDUCTIVITY MEASUREMENT OF SAID SIZE TREATED STRIP OF CONNECTED TEXTILE FIBERS FOR CONTROLLING THE MEANS VARYING THE AMOUNT OF LIQUID SIZE RETAINED BY SAID STRIP OF CONNECTED TEXTILE FIBERS.