Abstract: A water temperature cycling device for supplying intermittently hot and cold water for therapeutic benefits which has a cylindrical body (20) internally ported allowing water to drive a turbine (38) supplying rotational force to a rotor (48) through a speed reducing gear train (46). The speed of the cyclic action of the hot and cold water is governed by flow from a control valve (64) bypassing some of the flow from the turbine. The periodic repetitive changing from hot to cold is accomplished by a recessed portion (50) within the rotor (48). Each time the rotor makes a full rotation, the temperature changes completely as half of the circumference of the rotor is recessed. In another embodiment, the recessed portion is in a helical Archimedes curve shape allowing a more gentle effect. The device maintains a constant flow of combined hot and cold water regardless of the temperature change.

Abstract: A variable anamorphic lens system adaptable for use on an image recording instrument such as a camera (10). The system consists of an image transformation lens (14), a focusing lens (18) and an aperture stop (22). The transformation lens (14) and focusing lens (18) function together to form an image, on the camera's image plane (26), of a remote object at or near an object plane (30) as determined by the field of view. By manipulating the image transformation lens (14), the image of the remote object, or an insolated portion of the object, can be modified or transformed so that an altered image is formed on the image plane (26) of the camera (10).