GB244414A - Improvements in or relating to wind rotors for producing rotary power and generatingcross drive - Google Patents

Abstract

244,414. Savonius, S. J. Dec. 12, 1924, [Convention date]. Propelling by rotary cylinders utilizing Magnus effect.-A wind motor, which may act as a simple current motor or may be mounted so as to utilize the Magnus effect, for example as a sail on a boat, comprises two oppositely disposed vanes s, s<1>, Fig. 2, arranged to overlap each other so as to form a central gap between the inner concave sides of the vanes. The form of the vanes may be cylindrical, parabolic, helical or the like. The inner and outer curvatures of the vane may differ, Fig. 4. The surface of the vane may be conical, Fig. 5. Regulation and reversing are effected by pivoting the vanes s, s<1> on their endplates a, b so that they are adjustable. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification with the gap disposed between the outer convex sides of the vanes, Fig. 3 (Cancelled), a modification with no gap between the vanes, Fig. 1 (Cancelled), a modification with three vanes, Fig. 6 (Cancelled), and a modification for utilizing the Magnus effect wherein two vane rotors are mounted on radial arms free to rotate about a horizontal axis, Fig. 8 (Cancelled). This modification may be driven by an engine and act as a propeller. When utilizing the Magnus effect, the speed of rotation may be increased by a prime mover. Openings k may be formed in the endplates a, b to admit air. A pair of vane rotors may replace the planes of an aircraft, the wind pressure rotating the rotors and setting up a transverse thrust. This subject-matter does not appear in the Specification as accepted.