Abstract: A Savonius vertical axis wind turbine rotor is versatile, simple and easy to construct and assemble, and efficient. The rotor includes at least three spokes, at least two vanes, and fasteners. Each spoke (which may be laser cut from aluminum plate) includes a hub having a substantially central opening, typically two or three at least partially arcuate ribs substantially integral with the hub and extending substantially radially outwardly from the hub with inner and outer surfaces, and a plurality of channels defined in at least one surface (preferably the outer surface) of each rib. The vanes are of sheet material (e. g. aluminum or polycarbonate) generally conforming to an inner or outer surface of a rib ahd have openings operatively aligned with the channels. First fasteners pass through the openings into the channels and cooperate with second fasteners provided within the channels to securely hold the vanes to the ribs; the fasteners are preferably removable.

Abstract: A ground-supported poultry drinking fountain utilizing a bell-shaped member having an annular trough. A massive ground support member is disposed within the interior of the bell-shaped member, and connecting rods extend through the bell-shaped member to rigidly connect the massive support member to a valve-supporting member. Adjustments are provided for adjusting the effective length of the rod and therefore the height of the trough off the ground. A valve for supplying water to the trough is supported by the valve support member, and a spring is provided to suspend the bell-shaped member from the valve support member independent of the connecting rods so that the annular trough will reciprocate vertically under the influence of the spring depending upon the amount of water in the trough. Force-concentrating surface manifestations and/or an extremely massive bottom can be provided with the support member to ensure that the fountain stays immobile with respect to the ground.