Upright cylindrical container for separating liquor and/or washing cellulosic pulp

Claim 1

AN UPRIGHT CYLINDRICAL CONTAINER FOR UNIFORM EXTRACTION OF LIQUID FROM A MOVING COLUMN OF CELLULOSIC PULP COMPRISING MEANS FOR SUPPLYING PULP TO THE LOWER END OF SAID CONTAINER, MEANS FOR DISCHARGING PULP FROM THE UPPER END OF SAID CONTAINER, A ROTARY SHAFT EXTENDING COAXIALLY INTO THE CONTAINER, MEANS FOR ROTATING SAID SHAFT, A SIEVE BODY OF SUBSTANTIALLY DISC-SHAPED TRANSVERSE CONFIGURATION ATTACHED TO SAID SHAFT IN GENERALLY PERPENDICULAR RELATIONSHIP THERETO, SAID SIEVE BODY HAVING A PERIPHERAL EDGE ADJACENT THE WALL OF SAID CONTAINER AND RADIAL EDGES EXTENDING FROM SAID SHAFT TO THE ENDS OF THE PERIPHERAL EDGE, SAID RADIAL EDGES DEFINING A SUBSTANTIALLY SECTOR-SHAPED SPACE ALLOWING AXIAL FLOW OF PULP PAST SAID SIEVE BODY DURING ROTATION OF SAID SIEVE BODY, SAID SEIVE BODY HAVING TWO SURFACES DEFINING AN INTERIOR CHAMBER, AT LEAST THE UPPER SURFACE OF SAID INTERIOR CHAMBER IS APERTURED FOR RECEIVING LIQUID INTO SAID CHAMBER, AND PASSAGE MEANS IN SAID SHAFT COMMUNICATING WITH SAID SIEVE BODY CHAMBER TO PROVIDE AN OUTLET FOR LIQUID DRAWN OFF THROUGH SAID SIEVE BODY.