Hikes etal clarifying apparatus

Claim 1

IN A SETTLING DEVICE, IN COMBINATION, A CIRCULAR TANK HAVING A VERTICAL CYLINDRICAL WALL AND A BOTTOM WALL, A CIRCULAR SKIRT DEPENDING WITHIN THE TANK IN SPACED RELATION WITH THE CYLINDRICAL WALL, SAID SKIRT TERMINATING SHORT OF THE BOTTOM WALL AND DIVIDING THE TANK INTO AN ANNULAR CHAMBER AROUND THE SKIRT AND INTO A CENTRALLY DISPOSED CLARIFYING CHAMBER WITHIN THE SKIRT, AN INLET CONDUIT FOR SUPPLYING INCOMING LIQUID TO THE ANNULAR CHAMBER, A LAUNDER POSITIONED WITHIN THE CLARIFYING CHAMBER FOR DECANTING THE CLEAR LIQUID, A PARTITION WALL IN THE ANNULAR CHAMBER SLOPING DOWNWARD FROM THE INLET CONDUIT TO APPROXIMATELY MIDWAY OF THE DEPTH OF THE ANNULAR CHAMBER, A SECOND PARTITION WALL IN THE ANNULAR CHAMBER SLOPING UPWARD FROM THE FIRST PARTITION WALL TO TERMINATE A SHORT DISTANCE BELOW THE LEVEL OF THE LIQUID IN THE ANNULAR CHAMBER, SAID FIRST AND SECOND PARTITION WALLS FORMING A HOPPER SHAPED RECEPTACLE FOR COLLECTING GRIT PARTICLES FROM THE LIQUID DELIVERED TO THE ANNULAR CHAMBER BY THE INLET CONDUIT.