Process and apparatus for soldering in the presence of hydrogen gas

Claim 1

A HAND TOOL COMPRISING AN ELONGATED METAL CORE FORMED WITH A PAIR OF SUBSTANTIALLY AXIAL BORES EXTENDING INWARDLY FROM OPPOSED ENDS OF SAID CORE AND TERMINATING RESPECTIVELY IN INNER BORE ENDS DISTANT FROM SAID ENDS OFF SAID CORE, SAID CORE BEING FORMED WITH A PAIR OF TRANSVERSE BORES EXTENDING TRANSVERSELY THROUGH SAID CORE AND COMMUNICATING WITH SAID INNER BORE ENDS, RESPECTIVELY, AND SAID CORE HAVING AN ELONGATED THREADED EXTERIOR SURFACE EXTENDING BETWEEN AND TERMINATING AT OUTER OPEN ENDS OF SAID TRANSVERSE BORES, AN ELONGATED SLEEVE SURROUNDING AND ENGAGING SAID CORE AT ITS PORTION WHICH EXTENDS BETWEEN SAID TRANSVERSE BORES SO THAT SAID SLEEVE DEFINES WITH SAID THREADED PORTION OF SAID BORE AN ELONGATED HELICAL PASSAGE, SAID TRANSVERSE BORES COMMUNICATING SUBSTANTIALLY WITH THE ENDS OF SAID PASSAGE, RESPEFTIVELY, AND SAID SLEEVE HAVING END PORTIONS PROJECTING BEYOND SAID TRANSVERSE BORES TOWARD SAID ENDS OF SAID CORE AND FLUID-TIGHTLY ENGAGING THE EXTERIOR SURFACE THEREOF; AN ELONGATED TUBULAR HOUSING SURROUNDING AND SPACED FROM SAID SLEEVE, SAID HOUSING HAVING END WALLS RESPECTIVELY FORMED WITH ALIGNED BORES THROUGH WHICH SAID CORE PROJECTS SO THAT THE ENDS OF SAID CORE ARE LOCATED OUTSIDE OF AND BEYOND SAID END WALLS OF SAID HOUSING, ONE OF THE PROJECTING ENDS OF SAID CORE FORMING A DISCHARGE NOZZLE; A HOLLOW HAND GRIP CONNECTED TO AND PROJECTING FROM SAID HOUSING AND HAVING DISTANT FROM SAID HOUSING A PORTION CARRYING MEANS FOR PLACING THE INTERIOR OF SAID HOLLOW HAND GRIP IN COMMUNICATION WITH A SOURCE OF A GAS WHICH IS TO BE HEATED; A TUBE COMMUNICATING AT ONE END WITH THE INTERIOR OF SAID GRIP ADJACENT TO SAID HOUSING AT ITS OTHER END WITH THE OTHER OF SAID AXIAL BORES SO THAT GAS INTRODUCED INTO SAID GRIP WILL FLOW THROUGH SAID TUBE AND ALONG SAID BORES AND HELICAL PASSAGE TO DISCHARGE FROM SAID NOZZLE; AND HEATING MEANS IN SAID HOUSING IN THE SPACE BETWEEN THE LATTER AND SAID SLEEVE FOR HEATING GAS FLOWING ALONG SAID HELICAL PASSAGE.