Particulate solid sampling device

Claim 1

APPARATUS INSERTABLE THROUGH A VALVED OPENING IN THE LOWER PART OF A REACTION VESSEL TO REMOVE A SAMPLE OF CATALYST BEADS FROM A KNOWN LOCATION ADJACENT THE CENTER OF SAID REACTION VESSEL, WHICH COMPRISES AN ELONGATED PROBE ADAPTED TO EXTEND FROM A POINT EXTERIORLY OF THE VALVED OPENING IN A REACTION VESSEL INTO A CENTRAL LOCATION IN SAID VESSEL AND AWAY FROM THE WALLS THEREOF, SAID PROBE HAVING A RESTRICTED DIAMETER TO PREVENT SUBSTANTIAL DISTURBANCE OF THE CATALYST AND FLUD FLOW IN SAID VESSEL ADJACENT SAID KNOWN SAMPLING POINT, SAID PROBE INCLUDING AN ELONGATED SOLID PIPE HAVING ITES END CLOSED AND A SIDE OPENING PORT ADACENT SAID CLOSED END TO PERMIT ENTRY OF CATALYST BEADS BY GRAVITY FLOW FROM SAID KNOWN LOCATION INTO THE INTERIOR THEREOF, AN ELONGATED CHAMBER MEMBER ROTATABLY MOUNTED WITHIN SAID PIPE, SAID CHAMBER MEMBER HAVING A PAIR OF OPENINGS ADJACENT ITS OPPOSITE ENDS, ONE OF SAID OPENINGS BEING REGISTERABLE WITH SAID SIDE OPENING PORT OF SAID PROBE AND THE OTHER OF SAID OPENINGS BEING REGISTRABLE WITH A PORT IN SAID PROBE MEMBER EXTERIOR TO SAID VESSEL, SAID OPENINGS TO SAID CHAMBER MEMBER BEING AT THE SAME SIDE SO THAT THE INTERIOR OF SAID SAMPLE CHAMBER MAY BE SELECTIVELY CONNECTED TO COLLECT A SAMPLE AND TO DISCHARGE IT WITHOUT