Abstract: An improved minnow container that is adapted to carry water and oxygen therein when in an upright position is disclosed. The container comprises a water receiving and retaining chamber that is substantially open at its bottom end and has a first opening in the top thereof and an oxygen receiving and retaining chamber that is substantially open at its bottom end and is sealed above the open bottom end so as to preclude the escape of oxygen therefrom when the container is in its upright position. A barrier means physically separates the oxygen receiving and retaining chamber and the water receiving and retaining chamber so as to preclude the passage of fluid between the water receiving and retaining chamber and the oxygen receiving and retaining chamber. The barrier means terminates at a lower boundary in a passageway that is generally below the barrier means. The passageway connects the water receiving and retaining chamber in fluid communication with the oxygen receiving and retaining chamber.

Abstract: A motor-driven rotating table positioning device has a bullgear engaged by two pinions each driven by the high-efficiency worm and gear set. These two worm and gear sets are connected by a coupling shaft and an adjustable coupling which allows a desired torsion to be maintained in the coupling shaft thereby eliminating any table backlash caused by the bullgear, pinions and high-efficiency worm and gear sets. For safety in the event of motor failure, the motor is coupled to the coupling shaft by a low-efficiency or self-locking worm and gear set.