Arrangement for measuring the temperature of an extrusion during the manufacture thereof

Claim 1

AN ARRANGEMENT FOR DETERMINING THE TEMPERATURE OF AN EXTRUSION DURING THE MANUFACTURER THEREOF, COMPRISING, IN COMBINATION, EXTRUSION MEANS FOR EXTRUDING A GIVEN ELECTRICALLY CONDUCTIVE EXTRUSION MATERIAL, SAID EXTRUSION MEANS INCLUDING AN EXTRUSION DIE HAVING AN OUTLET END FROM WHICH THE EXTRUDED MATERIAL ISSUES; A FIRST THERMOCOUPLE ELEMENT, HAVING THERMOELECTRIC PROPERTIES DIFFERENT FROM THAT OF THE EXTRUSION MATERIAL, SUPPORTED BY SAID EXTRUSION MEANS CLOSELY ADJACENT TO THE EXTRUSION MATERIAL ADJACENT SAID OUTLET END OF SAID DIE AT A PREDETERMINED REGION OF THE LATTER AND SAID FIRST THERMOCOUPLE ELEMENT EXTENDING AWAY FROM SAID EXTRUSION MEANS; AN ELECTRICAL CONDUCTOR ENGAGING AND HAVING SUBSTANTIALLY THE SAME THERMOELECTRIC PROPERTIES AS THE EXTRUSION MATERIAL; AND MEANS CONNECTED ELECTRICALLY WITH SAID CONDUCTOR AND SAID FIRST THERMOCOUPLE ELEMENT FOR INDICATING THE TEMPERATURE OF A POINT ON THE EXTRUSION MATERIAL AT THE REGION WHERE SAID FIRST THERMOCOUPLE ELEMENT TERMINATES ADJACENT TO SAID EXTRUSION MATERIAL, WHEREBY THE EXTRUSION MATERIAL ITSELF FORMS THE SECOND THERMOCOUPLE ELEMENT.