Abstract: A junction for tubular elements comprising tapered and coacting male and female elements. The male element expands more than the female element which expands under conditions of use involving exposure to steam and heat to form a steam-tight joint.

Abstract: A steam and air mixing chamber having a downwardly open housing is mounted on top of a steam generator located in a housing containing a water reservoir. A steam nozzle directs a jet of steam against a baffle mounted in the mixing chamber entraining air and forming a mist. Compressed air is directed into the mixing chamber by a venturi tube, thereby sucking in the mist and causing the mixture to flow into a breathing element. The vacuum and thus the vapor and mist temperature, are controlled by a shielding means which can be moved to overshadow a portion of venturi tube orifice, thereby diverting some of the airstream leaving the venturi tube.

Abstract: A steam and air mixing chamber having a downwardly open housing is mounted on top of a steam generator located in a housing containing a water reservoir. A steam nozzle directs a jet of steam against a baffle mounted in the mixing chamber entraining air and forming a mist. Compressed air is directed into the mixing chamber by a venturi sucking the mist and causing the mixture to flow into a T joint having one arm connected to a breathing element. A port in the T joint receives a carrier for volatile medicament. A vertical arm of the T is connected to a tube which returns condensate to the water in the reservoir.