Apparatus for gravitating granular solids between zones of different pressure

Claim 1

IN AN APPARATUS FOR TRANSFERRING GRANULAR CONTACT MATERIAL FROM A FIRST CONTACTING VESSEL AT ONE PRESSURE THROUGH A SURGE CHAMBER TO A SECOND CONTACTING VESSEL AT A SUBSTANTIALLY DIFFERENT PRESSURE, THE IMPROVEMENT COMPRISING IN COMBINATION: A REVOLVING POT MOUNTED FOR ROTATION ABOUT A HORIZONATL AXIS THROUGH ONE END THEREOF, MEANS FOR GRAVITATIGN CONTACT MATERIAL FROM SAID FIRST CONTACTING VESSEL INTO SAID POT WHEN THE POT IS IN THE DOWN POSITION, A FIRST CONDUIT ASSOCIATED WITH SAID REVOLVING POT WHEN THE POT IS ROTATED TO THE UP POSITION, A PRESSURING CHAMBER ATTACHED TO THE BOTTOM OF SAID FIRST CONDUIT, A VALVE IN SAID FIRST CONDUIT, SAID PRESSURING CHAMBER HAVING A LARGER VOLUME THAN SAID REVOLVING POT, MEANS FOR PLACING SAID PRESSURING CHAMBER UNDER THE SAME PRESSURE AS SAID SECOND CONTACTING VESSEL, A SECOND CONNECTED BENEATH SAID PRESSURING CHAMBER THROUGH WHICH SAID GRANULAR CONTACT MATERIAL PASSES TO SAID SURGE CHAMBER AND THEN TO SAID SECOND CONTACTING VESSEL, A VALVE IN SAID SECOND CONDUIT AND MEANS FOR CHANGING THE PRESSURE IN SAID PRESSURING CHAMBER FROM THE PRESSURE OF SAID SECOND CO