Signal impulse integrator with variable time delay

Claim 1

IN CONTROL MEANS FOR APPARATUS OPERATING ON A MATERIAL SO AS TO CHANGE A CHARACTERISTIC OF IT, WHEREIN THE CONTROL MEANS INCLUDES MEANS FOR MEASURING THE SAID CHARACTERISTIC AND FOR PROVIDING ELECTRICAL IMPULSES OF EITHER SIGN UPON THE DEPARTURE OF SAID CHARACTERISTIC FROM A NORM IN EITHER DIRECTION, AND MEANS ACTUATED THEREBY FOR CORRECTING THE OPERATION OF THE APPARATUS, A SIGNAL IMPULSE INTEGRATOR COMPRISING A RESISTOR-CAPACITOR TIME DELAY CIRCUIT ACTING TO ABSORB SAID IMPULSES OF EITHER SIGN IN THE CHARGING AND DISCHARGING OF SAID CAPACITOR UNTIL A THRESHOLD CHARGE OF EITHER SIGN IS ATTAINED, WHEREUPON A CORRECTIVE ACTION IS INITIATED, AND MEANS ACTING UPON THE INITIATION OF SAID CORRECTIVE ACTION TO DISCHARGE SAID CAPACITOR TO A VALUE BELOW SAID THRESHOLD CHARGE VALUE.