Abstract: Apparatus for treating a patient by means of water sprays which includes a horizontal cylinder (10) which is open at one end and closed at the other. Nozzles (20,30 and 34) are provided for directing sprays of water and/or steam into the interior of the vessel. A pump (78), a water heater (80) and a steam generator (82) are provided and are connected to the nozzles by tubing. The patient lies on a trolley (40) which has a wheeled base (46). Vertical columns (44) at one end of the base support two elongate side members (42) which overlie the base and between which a mesh (52) or synthetic plastics sheet extends to support a prone patient. The trolley is oscillated horizontally to move the patient relatively to the nozzles by means of a crank arrangement (60,62) driven by an electric motor (56).

Abstract: The invention provides a solar heat energy collector, more particularly of the kind used for heating water which comprises two members, for instance, metal sheets, between which is sandwiched sealing means located towards the periphery of the members to provide a receptacle. The two members are held in sealing contact with the sealing means by means of clamping means which is forced over peripheral portions of the two members. Provision is made for restricting movement of the sealing means between the plates and against dislodgement of the clamping means.