Specific gravity control apparatus and method of using same

Claim 1

THE METHOD OF HANDLING AN AQUEOUS DISPERSION COATING COMPOSITION WHICH COMPRISES CONTINUOUSLY CIRCULATING SAID AQUEOUS DISPERSION FROM A FEED SUPPLY THEREOF AND TRAPPING A CONSTANT OVERFLOW HEAD OF SAID CIRCULATED AQUEOUS DISPERSION, CONTINUOUSLY DELIVERING AQUEOUS DISPERSION FROM SAID TRAPPED CONSTANT HEAD FOR CIRCULATION THROUGH A COATING FOUNTAIN SUPPLY WHILE DRAINING THE OVERFLOW FROM SAID TRAPPED CONSTANT HEAD AND THE CIRCULATION THROUGH SAID FOUNTAIN SUPPLY BACK TO SAID FEED SUPPLY, CONTINUOUSLY SENSING THE SPECIFIC GRAVITY OF SAID AQUEOUS DISPERSION AT THE TRAPPED CONSTANT HEAD THEREOF, AND ADDING WATER INTERMITTENTLY TO THE AQUEOUS DISPERSION CIRCULATED FROM SAID FEED SUPPLY UPON VARIATION OF THE SENSED SPECIFIC GRAVITY AT SAID TRAPPED CONSTANT HEAD FROM A DESIRED VALUE.