Low temp. melting metals spray gun - has pot for metal to be sprayed, heating equipment, and compound nozzle

摘要

The low temperature melting metals spray gun comprises a pot for the metal to the sprayed and means for heating the pot. The spray nozzle mounted at the bottom of the pot comprises an innermost nozzle communicating with the interior of the pot through a needle valve, and a concentric out nozzle communicating with an air feed duct. A handle secured to the pot is provided with a manually operable trigger means controlling the operation of the needle valve of the metal spray nozzle and the operation of an air cut-off valve mounted in a duct connected to one end to a compressed air source and at its other end to the inlet of an air circulating chamber mounted in heat-exchange relation with the pot. Its outlet is connected to the air feed duct of the outer nozzle.