Title: Wind propulsion devices

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Abstract: Wind-assisted power elements comprising paired rotors of which each rotor is independently rotated at a peripheral speed of about 2 to 4 times that of the wind, and the rotors are mounted in tandem pairs in a frame positioned by rotation of the frame on a pivot to the apparent direction of the wind and adjustable for a variable angle of attack, so that the wind will flow in a series over both rotating, generally cylindrical rotor surfaces. The effect is to derive a maximum of forward thrust in the direction of the movement of the ship for propulsion, or when the rotors are driven independently in different directions, a steering or other effect is achieved.


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