Abstract: A toy (10) for forming modeling compound includes a base (12), a turntable (16) rotatable on the base, a receptacle (22) on the turntable for receiving the modeling compound, a ram member (34), and a rotary actuator (44) for driving a peripheral drive gear (20) of the turntable to provide screw actuated movement of the ram member for forcing modeling compound from the receptacle (22) through a forming component (32) for forming. In one embodiment, the rotary actuator (44) includes a hand operated crank (74) and in another embodiment is power operated and includes an electric motor (102) and gear drivetrain (108) for providing the screw operated movement of the ram member for the forming. The forming component (32) may be embodied by an extruder (162) or a mold (170) to provide either extrusion or mold forming of the modeling compound.

Abstract: A propulsion unit for driving water craft, particularly those of the floating lounge type, is disclosed as including a fin made from a flexible material with a first end formed to define a foil into which the lower end of an oscillatory drive member projects downwardly in a fixedly secured relationship and with a second flexible fin end that extends from the foil end to provide a flapping movement through the water upon oscillation of the drive member in order to propel the water craft. Movement of the drive member through the water is facilitated by the foil shape of the first fin end which is also more rigid than the second flexible end so as to increase the moment arm about the drive member where the flexible flapping movement is concentrated. Flexible sheet plastic is preferably used to form the fin with a folding operation at a score line to define the foil shape.