Prime-mover dynamo plants – Tide and wave motors
Patent
1975-03-28
1976-11-23
Schaefer, Robert K.
Prime-mover dynamo plants
Tide and wave motors
F03B 1310
Patent
active
039939138
ABSTRACT:
A system for extracting power from the tides includes a dam constructed in a body of water subject to tidal flow for separating the body of water from a tidal basin between the dam and the shoreline. A plurality of water wheel assemblies are mounted on the dam and include mounting saddles for mounting water wheels for rotation about a horizontal axis at a level about the high tide level of the body of water and with the bottom of the water wheel at substantially the low tide level of the body of water. Each saddle includes a pair of vertical wall members, between which the water wheel is mounted for rotation, and a horizontal wall portion below the water wheel provided with a concave recess receiving the water wheel. The saddle is so constructed that substantially all of the water flowing from the body of water to the tidal reservoir and vice versa will flow through the water wheels. In order to control this flow, a brake is provided to block rotation of the water wheels at the discretion of an operator. The dam is constructed from a plurality of spaced vertical I-beams and a plurality of horizontal slabs which extend between successive I-beams. A saddle extension mounts the saddle on the dam by fitting vertical arm members between the flanges of successive I-beams. The water wheel includes a plurality of radially extending paddles and may have its ends closed by end walls; vent apertures are provided, either in the paddles adjacent the shaft or in the end walls adjacent the shaft. In one embodiment, a gate is provided and is moved in response to the speed of rotation of the water wheel to maintain the speed of rotation substantially constant.
REFERENCES:
patent: 827744 (1906-08-01), Melton
patent: 2820148 (1958-01-01), Southwick
patent: 3426540 (1969-02-01), Fixel
patent: 3912937 (1975-10-01), Lesser
Duncanson Jr. W. E.
Field Milton M.
Schaefer Robert K.
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