Patent for an improvement in windmills by providing “a number of converging blades which are arranged to the inner side of a casing, midway between the front and rear series of feathering wings or sails. These blades are arranged at opposite angles to the normal position of the feathering wings or sails. These blades are stationary and serve the purpose of deflecting the wind after it has operated upon the front set of wings or sails and directing it squarely against the rear set of wings or sails.” (Lines 90-101) Illustration is included.