Gun for applying paints by hot process

A gun for the hot application of paints, comprising a substantially horizontally extending body having a downwardly extending grip, an assembly comprising a cylindrical heating block having a vertical axis and including electric resistances mounted on the body, a first envelope defining with the block a sinuous path for the heating of air, and a second envelope defining a path for paint, means for automatically controlling the temperature of the spraying air, said second envelope being in the shape of a bell pivotally mounted on top of and around the first envelope and defining with means provided on an outer surface of the first envelope communicating first and second annular paths for the paint superimposed around said first envelope and communicating with a chamber defined between end walls of the first envelope and second envelope, said chamber having an outlet conduit which extends through said heating block, a vertical hot air outlet passageway which coaxially surrounds said outlet conduit, said conduit and said passageway separately opening outside said block into said body, said body being of insulating material and carrying a rotary spraying head having lateral branches, each of said branches comprising two air jets at least one of which two jets is adjustable, said block, first envelope and second envelope being in coaxial relation to one another on said vertical axis in said assembly, means for securing said assembly to a top part of said body, said second envelope comprising a lateral boss having a passage which communicates with said first path and second path for the paint, said boss being connectible selectively to a source of paint supplied by gravity located above the body and to a source of paint supplied by aspiration located below said body, and means for allowing said second envelope to be adjusted in position about said vertical axis relative to said first envelope and for securing said second envelope in the adjusted position relative to said first envelope, whereby said source of paint can be placed in a convenient position relative to said body, said vertical axis being so located relative to the grip that said passage in said boss can be placed in close proximity to a second vertical axis in vertical alignment with said grip.