Blast furnace probe

Claim 1

APPARATUS FOR DETERMINING CONDITIONS AT SPACED POINTS WITHIN A BLAST FURNACE COMPRISING AN OUTER SHELL ADAPTED TO BE INSERTED WITHIN SAID FURNACE, SAID SHELL HAVING A PLURALITY OF ALIGNED HOLLOW CYLINDRICAL PORTIONS DECREASING IN DIAMETER FROM THE OUTER END TO THE FURNANCE END THEREOF, MEANS CLOSING THE FORWARD END OF SAID SHELL, A TUBE CONNECTED TO THE FORWARD END OF SAID SHELL AND COMMUNICATING WITH THE INTERIOR OF SAID SHELL, A CUP SHAPED SHEILD CLOSING THE FORWARD END OF SAID TUBE WITH ITS OUTER PERIPHERY EXTENDING REARWARDLY, A SECOND SHIELD SURROUNDING AND ATTACHED TO SAID TUBE IN SPACED RELATIONSHIP THEREWITH, SAID SECOND SHIELD BEING GENERALY CONICAL WITH ITS MAXIMUM DIAMETER BEING GREATER THAN THE DIAMETER OF SAID FIRST SHIELD, THE MAXIMUM DIAMETER PORTION OF SAID SECOND SHIELD BEING ADJACENT THE FIRST SHIELD AND SPACED THEREFROM TO PROVIDE A CIRCUMFERENTIAL OPENING, A GAS PASSAGEWAY BETWEEN SAID CIRCUMFERENTIAL OPENING AND THE INTERIOR OF SAID TUBE, MEANS FOR MOVING SAID SHELL INTO AND OUT OF SAID FURNANCE, AND MEANS FOR ROTATING SAID SHELL WHEN IT IS IN SAID FURNACE.