Chemical feeder

Claim 1

IMPROVEMENT IN CHEMICAL FEEDERS COMPRISING A TANK HAVIG AN OPENING AT THE TOP FOR INTRODUCTION OF SOLID MATERIAL INTO THE TANK AND HAVING MEANS FOR CONNECTION AS BY-PASS IN A LIQUID FLOW LINE, THE SAID MEANS COMPRISING AN INLET TUBE CLOSED BELOW THE TOP OF THE TANK AND CONTAINING AT THE BOTTOM OF THE TANK A GROUP OF SMALL APERTURES AND NEAR ITS TOP A SMALL INLET APERTURE OF LESS AREA THAN THE SAID LOWER APERTURE GROUP AND DIRECTED TOWARD A NEARBY SIDE OF THE TANK FOR DISCHARGE THEREFROM TO INDUCE CROSSCURRENTS IN LIQUID AT THE APERTURE LEVEL, AND AN OUTLET TUBE HAVING AN OPENING NEAR THE TOP OF THE TANK AT SUBSTANTIALLY THE LEVEL OF THE SAID SMALL INLET APERTURE ESTABLISHING A SPACE AND A TOP SURFACE LEVEL BELOW THE TOP OF THE TANK, THE SAID INLET AND OUTLET TUBES RISING THROUGH THE TANK FROM THE BOTTOM TO THE SAID OUTLET LEVEL AND SPACED AT OPPOSITE SIDES OF THE TANK, THE OUTLET TUBE CONTAINING A FINE-ADJUSTING VALVE TO CONTROL FLUCTUATION AND THROUGHPUT OF LIQUID IN THE TANK, THE INLET TUBE CONTAINING BELOW THE SAID GROUP OF BOTTOM APERTURES A BORE ENLARGED TO FORM A CHAMBER, AND DISPOSED IN THE CHAMBER A FLOAT VALVE AND DOUBLE SEATING MEANS TO SEAT THE FLOAT VALVE ALTERNATIVELY AGAINST FLUTUATION S OF LIQUID THROUGH THE CHAMBER, WHEREBY TO PROMOTE UNIFORM CONDITIONS IN LIQUID OUTLET LEVELS INTO WHICH THE SAID UPPER SMALL INLET APERTURE OPENS.