Centripetal scale pit

Claim 1

IN A ROLLING MILL, APPARATUS FOR REMOVING OIL AND MILL SCALE FROM COOLING WATER COMPRISING THE COMBINATION OF: A CENTRIPETAL SCALE SETTLING TANK HAVING A CYLINDRICAL SIDE WALL, SAID TANK OPEN AT THE UPPER END AND CLOSED AT THE LOWER END BY A SUBSTANTIALLY FLAT BOTTOM SURFACE; INLET MEANS FOR INTRODUCTING AN INFLUENT MIXTURE OF COOLING WATER, OIL AND MILL SCALE INTO SAID TANK IN ORDER TO PRODUCE A POOL THEREIN, SAID POOL HAVING A CENTRIPETAL FLOW WITH MILL SCALE SETTLING DOWNWARDLY TOWARDS SAID BOTTOM SURFACE AS OIL RISES TO THE SURFACE OF SAID POOL, SAID INLET MEANS COMPRISING A SLOPING LUME ENTERING SAID TANK TANGENTIALLY THROUGH SAID CYLINDRICAL SIDE WALL AT A POINT IMMEDIATELY ABOVE THE SURFACE LEVEL OF SAID POOL; OUTLET MEANS FOR CONTINUOSULY REMOVING WATER AND OIL FROM THE SURFACE OF SAID POOL, SAID OUTLET MEANS COMPRISING AN ANNULAR TROUGH DEFINED BY A CIRCULAR WEIR RADIALLY SPACED FROM THE INTERIOR SURFACE OF SAID SIDE WALL BY A ANNULAR BOTTOM MEMBER, THE UPPER EDGE OF SAID WEIR DEFINING THE SURFACE LEVEL SAID POOL, THEREBY PERMITTING A SMOOTH CONTINUOUS FLOW OF WATER AND OIL FROM THE SURFACE OF SAID POOL INTO SAID TROUGH; GUIDE MEANS FOR DIRECTING THE INCOMING FLOW OF THE INFLUENT MIXTURE INTRODUCED BY SAID INLET MEANS DOWNWARDLY BENEATH SAID ANNULAR TROUGH, SAID GUIDE MEANS COMPRISING A DEFLECTING WALL SLOPING UPWARDLY FROM THE ANNULAR BOTTOM MEMBER OF SAID TROUGH TO A POINT ADJACENT TO AND HIGHER THAN THE ENTRY OF SAID FLUME INTO SAID TANK; AND OIL REMOVAL MEANS FOR SEPARATING AND REMOVING OIL FROM SAID WATER, SAID OIL REMOVAL MEANS COMPRISING AN OIL REMOVING CHAMBER SUBDIVIDED INTO FIRST AND SECOND SUB-CHAMBERS, SAID FIRST SUB-CHAMBER CONNECTED TO SAID SECOND SUB-CHAMBER BY A LOWER PASSAGEWAY, MEANS IN COMMUNICATION WITH SAID OUTLET MEANS FOR FILLING SAID FIRST SUB-CHAMBER WITH A MIXTURE OF OIL AND COOLING WATER WHEREBY SAID OIL WILL RISE TO THE SURFACE OF SAID FIRST SUB-CHAMBER AND REMAIN IN SAID RIST SUB-CHAMBER AS SAID WATER FLOWS DOWNWARDLY IN SAID FIRST SUB-CHAMBER THROUGH SAID PASSAGEWAY TO SAID SECOND SUB-CHAMBER, MEANS FOR CONTINUOUSLY REMOVING SAID OIL FROM THE SURFACE OF SAID FIRST SUB-CHAMBER, MEANS FOR ADJUSTING THE SIZE OF SAID LOWER PASSAGEWAY IN ORDER TO ADJUST THE RATE OF FLOW BETWEEN SAID FIRST AND SECOND SUB-CHAMBERS, AND MEANS FOR CONTINUOUSLY REMOVING WATER FROM SAID SECOND SUB-CHAMBER.