Abstract: A transmission in which gear segments are cammed to mesh with a circumferential gear and to transmit power from a centered shaft through arcs of power determined by the position of segments relative to the shaft. The segments automatically adjust the radii from shaft to segment in reaction to the torque transmitted from the shaft.

Abstract: A multi speed transmission mechanism for use on a bicycle, for example, wherein pressure on the pedal by the operator decreases or increases the diameter of the driver sprocket wheel to alter the gear ratio correspondingly. The sprocket is provided with opposed segments which are linked to both the sprocket wheel and an inner control disc. The segments move radially outwardly or inwardly in unison responsive to limited rotation of the control disc independently of rotation of the sprocket. Such rotation is foot controlled by the operator. Pressure on the foot pedal by the operator increases or decreases the working length of the bicycle sprocket chain by making the effective diameter of the sprocket smaller or larger. This alters the gear ratio correspondingly. The gear ratio may be maintained without change by a locking device on the sprocket wheel in contact with the control disc.

Abstract: An apparatus separates grease from a waste effluent containing a grease and water mixture prior to disposing of the effluent in a sanitary sewage system. A separator tank receives and holds the effluent while the mixture separates into an upper grease fraction and a lower water fraction. A means is provided for introducing the effluent into the tank either periodically or directly from the source of the effluent. A withdrawal means is associated with the tank for withdrawing at least a portion of the water fraction from the tank means when the effluent in the tank means reaches a first predetermined level. The withdrawal means stop withdrawing the water fraction from the separator tank when the effluent in the tank reaches a second predetermined level lower than the first predetermined level. The grease can be stored in th separator tank itself or can be transferred to a separate storage tank.