Disposable immersion-type thermocouple

Claim 1

A DISPOSABLE TEMPERATURE SENSING DEVICE FOR MEASURING THE TEMPERATURE OF MOLTEN FLUID COMPRISING A USHAPED, REFRACTORY ELECTRICALLY NON-CONDUCTIVE SHEATH, A THERMOCOUPLE COMPRISING A PAIR OF WIRES OF DISSIMILAR METALS JOINED TOGETHER IN SAID SHEATH TO FORM A HOT JUNCTION, A FIBERBOARD TUBE FOR SUPPORTING THE THERMOCOUPLE WITH THE SHEATHED HOT JUNCTION PROJECTING BEYOND THE END OF THE TUBE SO AS TO BE CONTACTED BY THE MOLTEN FLUID WHEN IMMERSED THEREIN, A CYLINDRICAL DISC POSITIONED TRANSVERSELY OF SAID TUBE NEAR THE END THEREOF FROM WHICH SAID THERMOCOUPLE HOT JUNCTION PROJECTS, ELECTRICAL CONNECTORS MOLDED IN SAID DISC AND EXTENDING THROUGH SAID TUBE FOR CONNECTION OF SAID THERMOCOUPLE TO A MEASURING INSTRUMENT, A REFRACTORY, ELECTRICALLY NON-CONDUCTIVE BODY FILLING THE SPACE BETWEEN SAID DISC AND THE SAID END OF SAID TUBE WITH THE ENDS OF SAID SHEATH EMBEDDED IN AND EXTENDING PART WAY ONLY INTO SAID BODY AND WITH A PORTION OF SAID THERMOCOUPLE WIRES AND THE JUNCTION OF SAID THERMOCOUPLE WIRES AND SAID ELECTRICAL CONDUCTORS EMBEDDED IN SAID BODY IN CLOSE THERMAL CONTACT THEREWITH, WHEREBY SAID BODY SEALS THE END OF SAID TUBE AND SERVES ALSO AS A HEAT SINK FOR THE PORTIONS OF SAID THERMOCOUPLE EMBEDDED IN SAID BODY, A SECOND FIBERBOARD TUBE, THE OUTER DIAMETER OF SAID SECOND TUBE BEING APPROXIMATELY EQUAL TO THE INNER DIAMETER OF SAID FIRST-MENTIONED TUBE, SAID SECOND TUBE BEING INSERTED IN AND PERMANENTLY ATTACHED TO THE END OF SAID FIRST TUBE IMMERSING SAID THERMOCOUPLE WITH SAID CONDUCTOR WIRES FITTING BETWEEN SAID TUBES AND THE ENDS OF SAID WIRES WRAPPED ABOUT SAID SECOND TUBE TO PROVIDE LONGITUDINALLY DISPLCED TERMINALS FOR SAID CONDUCTORS ON THE INNER SURFACE OF SAID SECOND TUBE.