Pulp dewatering apparatus

Claim 1

A FIBRE PULP PROCESSING MACHINE COMPRISING IN COMBINATION A MAIN FRAME; SUPPORTING DRUM MEANS MOUNTED ADJACENT OPPOSITE LONGITUDINAL ENDS OF SAID FRAME FOR ROTATION ABOUT TRANSVERSE AXES; AN ENDLESS WIRE CLOTH TRAINED ABOUT SAID DURM MEANS AND HAVING AN UPPER SURFACE ARRANGED TO SUPPORT WET PULP THEREON; MEANS FOR RATATING THE DRUM MEANS TO ADVANCE SAID WIRE CLOTH WITH SAID FRAME DEFINING A SEQUENCE OF SUCTION CHAMBERS DISTRIBUTED LONGITUDINALLY UNDERNEATH SAID SURFACE OF THE WIRE CLOTH; SAID SUCTION CHAMBERS HAVING UPPER WALLS UNDERLYING SAID CLOTH AND TRANSVERSELY ELONGATED APERTURES IN SAID WALLS; ROLLS POSITIONED IN SAID CHAMBERS TRANSVERSELY THERETO HAVING UPPER PORTIONS EXTENDING THROUGH SAID APERTURES INTO ENGAGEMENT WITH THE UNDER SURFACE OF SAID CLOTH; SUPPORTING MEANS FOR SAID ROLLS IN SAID CHAMBERS INCLUDING CRADLING MEANS ENGAGING LOWER PORTIONS OF THE ROLLS TO PERMIT ROTATION THEREOF AND MEANS FOR RESILIENTLY BIASSING THE CRADLING MEANS UPWARDS TO URGE THE ROLLS INTO ENGAGEMENT WITH SAID CLOTH, INCLUDING MEANS FOR ADJUSTING THE VERTICAL ELEVATION OF SAID CRADLING MEANS; AND AN INNER FRAME, MEANS SUPPORTING SAID INNER FRAME WITHIN SAID MAIN FRAME, MEANS MOUNTING SAID SUPPORTING DRUM MEANS FROM OPPOSITE ENDS OF SAID INNER FRAME, SAID ENDLESS CLOTH BEING TRAINED AROUND SAID INNER FRAME, AND MEANS FOR REMOVABLY SUPPORTING SAID SUCTION CHAMBER MEANS IN SAID INNER FRAME FOR REMOVAL THEREFROM AND INSERTION THEREINTO THROUGH A SLIDE OF SAID INNER FRAME.