Current density indicator and control

Claim 1

A CURRENT DENSITY INDICATOR AND CONTROL FOR A CONTINUOUS STRIP PROCESSING LINE FOR REMOVING MATERIAL FROM SAID STRIP IN WHICH STRIPS OF DIFFERENT WIDTHS PASSING THROUGH AN ELECTROLYTE COMPRISING A GENERATOR FOR SUPPLYING CURRENT TO SAID ELECTROLYTE, A FIELD CIRCUIT FOR CONTROLLING THE OUTPUT OF SAID GENERATOR, A RHEOSTAT IN SAID FIELD CIRCUIT FOR REGULATING THE OUTPUT OF SAID GENERATOR, A POTENTIOMETER HAVING A RESISTOR AND A MOVABLE ARM, MEANS CONNECTING THE ENDS OF SAID RESISTOR TO THE OUTPUT OF SAID GENERATOR, SAID ARM BEING MOVABLE IN PROPORTION TO THE WIDTH OF THE STRIP BEING PROCESSED, AN AMMETER HAVING A FIELD, ELECTRICAL MEANS CONNECTING ONE SIDE OF SAID FIELD TO SAID ARM, ELECTRICAL MEANS CONNECTING THE OTHER SIDE OF SAID FIELD TO ONE SIDE OF SAID RESISTOR, A CONTACT FOR SAID AMMETER MOVABLE IN PROPORTION TO THE CURRENT ON SAID AMMETER, A PAIR OF CONTACTS ASSOCIATED WITH SAID AMMETER AND ADAPTED TO BE SELECTIVELY CONTACTED BY SAID MOVABLE CONTACT AS THE CURRENT ON SAID AMMETER REACHES A PREDETERMINED HIGH OR LOW LIMIT, EACH OF SAID PAIR OF CONTACTS BEING MOUNTED FOR ADJUSTMENT TOWARD AND AWAY FROM SAID CONTACT, A REVERSIBLE MOTOR FOR MOVING THE ARM OF SAID RHEOSTAT, A PAIR OF FIELDS FOR SAID MOTOR, AN ELECTRICAL CONNECTION BETWEEN ONE OF SAID PAIR OF CONTACTS AND ONE OF SAID PAIR OF FIELDS, AN ELECTRICAL CONNECTION BETWEEN THE OTHER OF SAID PAIR OF CONTACTS AND THE OTHER OF SAID PAIR OF FIELDS, AN ELECTRICAL CONNECTION BETWEEN THE ARMATURE OF SAID MOTOR AND EACH OF THE FIELDS OF SAID PAIR OF FIELDS, AN ELECTRICAL CONNECTION BETWEEN SAID MOVABLE CONTACT AND SAID ARMATURE, AND A POWER SOURCE FOR SUPPLYING CURRENT TO SAID ARMATURE AND ONE OF THE FIELDS OF SAID PAIR OF FIELDS WHEN SAID MOVABLE CONTACT CONTACTS ONE OF SAID PAIR OF CONTACTS.