Windmill with shroud adjusting means

A windmill comprising:

• a vane assembly and means rotatably mounting said vane assembly about a vertical axis;
• a shroud disposed over a portion of said vane assembly and means mounting said shroud to be rotatable with respect to said vane assembly whereby said shroud can be rotated to cover different portions of said vane assembly;
• a directional vane movable by the wind to face the direction of the wind and means rotatably mounting said directional vane independently of said assembly;
• means selectively attaching said directional vane to said shroud at different positions on said shroud whereby said shroud is moved by said directional vane to a position with respect to said vane assembly depending upon the position at which said directional vane is attached to said shroud;
• said vane assembly mounting means comprising a first shaft and said directional vane mounting means comprising a second shaft, said first shaft and said second shaft being independent of each other, said first shaft being mounted in a fixed position and said second shaft being fixed to said vane to be rotatable therewith;
• said shroud mounting means including means rotatably mounting said shroud to said first shaft;
• said attaching means comprising a plurality of stop members disposed on said shroud and spaced within an arc of substantially 90.degree. with respect to the axis of rotation of said shroud and means carried by said directional vane for selective attachment to said stop means.