Thermocouple pickup for a heating chamber

Claim 1

A HEAT PROCESSING UNIT COMPRISING AN ELONGATED CHAMBER HAVING AN ENTRANCE AT ONE END THEREOF, A CARRIER IN SAID CHAMBER MOUNTED FOR LENGTHWISE MOVEMENT THROUGH SAID ENTRANCE INTO SAID ELONGATED CHAMBER, A DOOR FOR SAID ENTRANCE ADAPTED TO BE CLOSED BEHIND SAID CARRIER TO THEREBY SUBSTANTIALLY SEAL SAID CHAMBER TO MAINTAIN A CONTROLLED ATMOSPHERE THEREIN, SAID CARRIER HAVING MATERIAL TO BE TREATED THEREON, THERMALLY RESPONSIVE SENSING MEANS ON SAID CARRIER, INCLUDING A THERMOCOUPLE IN CONTACT WITH THE MATERIAL, A PAIR OF ELECTRICAL CONTACT POINTS ON SAID CARRIER, AND LEAD WIRES CONNECTING SAID THERMOCOUPLE TO SAID CONTACT POINTS, AND MEANS EXTERIORLY OF SAID CHAMBER ADAPTED TO BE OPERATED BY SAID SENSING MEANS, INCLUDING AN INSTRUMENT FOR MEASURING THE OUTPUT OF SAID THERMOCOUPLE, A PAIR OF CONTACT PROBES MOUNTED IN A WALL OF SAID CHAMBER TO BE IN AXIAL ALIGNMENT WITH SAID PAIR OF CONTACT POINTS ON SAID CARRIER, LEAD WIRES CONNECTING SAID CONTACT PROBES TO SAID INSTRUMENT, AND MEANS FOR AXIALLY MOVING SAID CONTACT PROBES INTO DIRECT CONTACT WITH THE AFORESAID CONTACT POINTS ON SAID CARRIER TO COMPLETE AN ELECTRICAL CIRCUIT BETWEEN SAID THERMOCOUPLE AND SAID INSTRUMENT.