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A windmill comprising a generally cylindrically shaped housing having a vertical axis, a vertical shaft concentrically disposed in the housing and a rotor fixedly attached to the shaft and comprising a plurality of equally peripherally spaced, vertically extending trough-shaped wind scoops. Each sco

A windmill comprising a generally cylindrically shaped housing having a vertical axis, a vertical shaft concentrically disposed in the housing and a rotor fixedly attached to the shaft and comprising a plurality of equally peripherally spaced, vertically extending trough-shaped wind scoops. Each scoop has a closed back surface with vertically extending leading and following edges and a vertically extending open front exposed to the wind. Each scoop is attached at its edges to the adjacent scoops to form a generally cylindrical scoop assembly. The housing comprises a plurality of equally peripherally spaced apart stationary wind-directing and concentrating vanes, each vane having a proximal end forming a cylindrical surface substantially concentric with the axis of rotation of the scoop assembly, the cylindrical surfaces and the scoop assembly being of substantially equal diameter for closely spacing the scoop assembly and vanes, and each of the vanes projecting outwardly generally tangentially from the cylindrical surfaces of the proximal ends of the vanes and scoop assembly. The length of the arc of the cylinder formed by the proximal end of each vane exceeds the length of the arc of the cylinder described by the open front of each of the wind scoops for preventing the escape of air impinging upon the inner surfaces of the scoops from between the scoop and the proximal end of the stationary vane.

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A windmill comprising a vertical shaft and a rotor fixedly connected thereto, said rotor comprising a plurality of equally peripherally spaced, vertically extending, trough-shaped wind scoops, each of said scoops having vertically extending leading and following edges joined respectively to the foll

A windmill comprising a vertical shaft and a rotor fixedly connected thereto, said rotor comprising a plurality of equally peripherally spaced, vertically extending, trough-shaped wind scoops, each of said scoops having vertically extending leading and following edges joined respectively to the following and leading edges of adjacent wind scoops, said edges defining an outer cylindrical surface as said rotor rotates, and each of said scoops having a radially outwardly directed open face defining a fixed length of arc on said cylindrical surface, said windmill further comprising a plurality of verticaLly extending, peripherally spaced apart wind-directing concentrator vanes, each of said concentrator vanes extending generally tangentially outwardly from said cylindrical surface, the proximal end of each of said concentrator vanes adjacent said cylindrical surface being cylindrically formed to extend through a length of arc greater than said length of arc described by each of said open faces of said wind scoops for substantially enclosing moving air flowing into said wind scoops as said scoops move behind said proximal ends of said concentrator vanes thereby impeding the escape of the moving air from between said ends of said concentrator vanes and said rotor as said rotor rotates.