Nozzle assembly

Claim 1

A NOZZLE ASSEMBLY FOR INTRODUCING FLUID INTO A CLOSED VESSEL, COMPRISING A FIRST CONDUIT ADAPTED TO EXTEND INTO SAID VESSEL, A SSECOND CONDUIT ENCLOSING A PART OF SAID FIRST CONDUIT AND COEXTENSIVE THEREWITH INSIDE OF SAID VESSEL, MEANS CLOSING THE ENDS OF THE SPACE BETWEEN SAID CONDUITS TO FORM A JACKET ADAPTED TO RECEIVE A CIRCULATING HEAT-EXCHANGE FLUID, INLET AND OUTLET MEANS COMMUNICATING WITH SAID JACKET FOR INTRODUCING AND WITHDRAWING SAID HEAT-EXCHANGE FLUID, THE OUTWARDLY EXTENDING PORTION OF SAID FIRST CONDUIT BEING PROVIDED WITH A VALVE AND A TERMINAL PACKAGING GLAND, A THIRD CONDUIT ADAPTED TO EXTEND THROUGH SAID PACKING GLAND AND THROUGHOUT SAID FIRST CONDUIT, A NOZZLE AT THE INNER END OF SAID THIRD CONDUIT, AND MEANS FOR INTRODUCING FLUID INTO SAID THIRD CONDUIT, SO CONSTRUCTED AND ARRANGED THAT THE INNER END OF SAID THIRD CONDUIT MAY BE WITHDRAWN TO A POINT OUTSIDE OF SAID VALVE, WHEREBY THE VALVE MAY BE CLOSED FOR FURTHER WITHDRAWAL OF SAID THIRD CONDUIT AND SAID NOZZEL WITHOUT PASSAGE OF FLUID INTO OR OUT OF SAID VESSEL THROUGH SAID FIRST CONDUIT.