Catalyst sampler

Claim 1

IN A CONTINUOUS SYSTEM FOR THE CATALYTIC CRACKING OF PETROLEUM HYDROCARBONS COMPRISING MEANS FOR PASSING THE CATALYST PARTICLES CONTINUOUSLY DOWNWARD THROUGH A REACTOR AND A REGENERATOR, MEANS FOR CONDUCTING THE CATALYST AT A UNIFORM RATE FROM THE BOTTOM OF THE REACTOR TO THE TOP OF THE REGENERATOR AND FROM THE BOTTOM OF THE REGENERATOR TOP OF THE REACTOR, THE IMPROVEMENT WHICH COMPRISES A MEANS FOR REMOVING A SAMPLE OF MATERIALS FROM THE REACTOR WHILE IN OPERATION, SAID MEANS COMPRISING A TUBE PASSING THROUGH THE WALL OF SAID REACTOR, MEANS FOR SEALING THE OUTER END OF THE TUBE FROM THE ATMOSPHERE, A CAP DISPOSED OVER THE INNER END OF THE TUB, A ROD WELDED AT ONE END TO SAID CAP AND THREATED AT THE OTHER END, A BUSHING AROUND SAID ROD IN A FIXED POSITION RELATIVE TO SAID REACTOR, A HANDWHEEL FREE TO ROTATE ON SAID BUSHING, A NUT FASTENED TO THE HUB OF SAID HANDWHEEL AND ENGAGED WITH SAID THREADS ON SAID ROD, IN SAID CAP A HOLE SO POSITIONED AS TO BE CAPABLE OF BEING PLACED IN OPEN OR SUBSTANTIALLY CLOSED POSITION BY THE ROTATION OF SAID HANDWHEEL, PIPES CONNECTED TO THE OUTER END OF SAID TUBE FOR CONDUCTING SAMPLES TO SAMPLING CHAMBERS AND VALVES IN SAID PIPES FOR CONTROLLING THE FLOW OF SAMPLES THROUGH SAID PIPES.