Method and apparatus for measuring progress of hydrogenation

Claim 3

APPARATUS FOR MEASURING CHANGES IN THE DEGREE OF UNSATURATION OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ANIMAL AND VEGETABLE OILS AND FATTY ACIDS DERIVED THEREFROM FOR THE PURPOSE OF MEASURING THE PROGRESS OF HYDROGENATION, WHICH APPARATUS COMPRISES A HYDROGENATION VESSEL, A CAPACITANCE CELL CAPABLE OF UTILISING THE SUBSTANCE AS THE DIELECTRIC, THE CAPACITANCE CELL BEING CONNECTED TO THE HYDROGENATION VESSEL TO ENABLE THE SUBSTANCE FROM THE VESSEL TO PASS THROUGH IT, CAPACITANCE MEASURING MEANS FOR MEASURING THE CAPACITANCE OF THE CAPACITANCE CELL, WHICH MEANS COMPRISE A HETERODYNE UNIT FOLLOWED BY A FREQUENCY DISCRIMINATOR, THE HETERODYNE UNIT COMPRISING A FIXED FREQUENCY OSCILLATOR, A VARIABLE FREQUENCY OSCILLATOR, AND A FREQUENCY MIXER, WITH THE CAPACITANCE MEANS FOR MEASURING THE CAPACITANCE OF THE TANK CIRCUIT OF THE VARIABLE OSCILLATOR, A VARIABLE REBALANCING CAPACITOR CONNECTED IN PARALLEL WITH THE CAPACITANCE CELL, A VARIABLE ZERO BALANCE CAPACITOR CONNECTED IN PARALLEL WITH THE CAPACITANCE CELL, REBALANCING SERVOMOTOR FOR ADJUSTING THE REBALANCING CAPACITOR AND CAPABLE OF RESPONDING TO THE OUTPUT OF THE FREQUENCY DISCRIMINATOR SO AS TO KEEP THE OUTPUT FREQUENCY OF THE FREQUENCY MIXER AT A PREDETERMINED VALUE, A ZERO BALANCE SERVOMOTOR FOR ADJUSTING THE ZERO BALANCE CAPACITOR AND CAPABLE OF RESPONDING TO THE OUTPUT OF THE FREQUENCY DISCRIMINATOR SO AS TO BRING THE OUTPUT FREQUENCY OF THE FREQUENCY MIXER TO THE PREDETERMINED VALUE, AND SEQUENCING MEANS WHICH CAUSE THE REBALANCING SERVOMOTOR TO BE ENERGISED SO AS TO ADJUST THE REBALANCING CAPICATOR UNTIL IT REACHES A POSITION CORRESPONDING TO ZERO CHANGE IN DEGREE OF UNSATURATION, THEREAFTER CAUSING THE ZERO BALANCE SERVOMOTOR TO RESPOND TO THE OUTPUT OF THE FREQUENCY DISCRIMINATOR TO ADJUST THE ZERO BALANCE CAPACITOR UNTIL THE OUTPUT FREQUENCY OF THE FREQUENCY MIXER HAS A PREDETERMINED VALUE, AND THEN CAUSES THE REBALANCING SERVOMOTOR TO RESPOND TO THE OUTPUT OF THE FREQUENCY DISCRIMINATOR TO ADJUST THE REBALANCING CAPACITOR TO KEEP THE OUTPUT OF THE FREQUECNY MIXER AT THE PREDETERMINED VALUE.

Claim 4

APPARATUS FOR MEASURING CHANGES IN THE DEGREE OF UNSATURATION OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ANIMAL AND VEGETABLE OILS AND FATTY ACIDS DERIVED THEREFROM FOR THE PURPOSE OF MEASURING THE PROGRESS OF HYDROGENATION, WHICH APPARATUS COMPRISES A HYDROGENATION VESSEL, A CAPACITANCE CELL CAPABLE OF UTILISING THE SUBSTANCE AS THE DIELECTRIC, THE CAPACITANCE CELL BEING CONNECTED TO THE HYDROGENATION VESSEL TO ENABLE THE SUBSTANCE FROM THE VESSEL TO PASS THROUGH IT, CAPACITANCE MEASURING MEANS FOR MEASURING THE CAPACITANCE OF THE CAPACITANCE CELL, WHICH MEANS COMPRISE A HETERODYNE UNIT FOLLOWED BY A FREQUENCY DISCRIMINATOR, THE HETERODYNE UNIT COMPRISING A FIXED FREQUENCY OSCILLATOR, A VARIABLE FREQUENCY OSCILLATOR, AND A FREQUENCY MIXER, WITH THE CAPACITANCE MEANS FOR MEASURING THE CAPACITANCE OF THE TANK CIRCUIT OF THE VARIABLE OSCILLATOR, A VARIABLE REBALANCING CAPACITOR CONNECTED IN PARALLEL WITH THE CAPACITANCE CELL, A VARIABLE ZERO BALANCE CAPACITOR CONNECTED IN PARALLEL WITH THE CAPACITANCE CELL, REBALANCING SERVOMOTOR FOR ADJUSTING THE REBALANCING CAPACITOR AND CAPABLE OF RESPONDING TO THE OUTPUT OF THE FREQUENCY DISCRIMINATOR SO AS TO KEEP THE OUTPUT FREQUENCY OF THE FREQUENCY MIXER AT A PREDETERMINED VALUE, A ZERO BALANCE SERVOMOTOR FOR ADJUSTING THE ZERO BALANCE CAPACITOR AND CAPABLE OF RESPONDING TO THE OUTPUT OF THE FREQUENCY DISCRIMINATOR SO AS TO BRING THE OUTPUT FREQUENCY OF THE FREQUENCY MIXER TO THE PREDETERMINED VALUE, AND SEQUENCING MEANS WHICH CAUSE THE REBALANCING SERVOMOTOR TO BE ENERGISED SO AS TO ADJUST THE REBALANCING CAPICATOR UNTIL IT REACHES A POSITION CORRESPONDING TO ZERO CHANGE IN DEGREE OF UNSATURATION, THEREAFTER CAUSING THE ZERO BALANCE SERVOMOTOR TO RESPOND TO THE OUTPUT OF THE FREQUENCY DISCRIMINATOR TO ADJUST THE ZERO BALANCE CAPACITOR UNTIL THE OUTPUT FREQUENCY OF THE FREQUENCY MIXER HAS A PREDETERMINED VALUE, AND THEN CAUSES THE REBALANCING SERVOMOTOR TO RESPOND TO THE OUTPUT OF THE FREQUENCY DISCRIMINATOR TO ADJUST THE REBALANCING CAPACITOR TO KEEP THE OUTPUT OF THE FREQUECNY MIXER AT THE PREDETERMINED VALUE.