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Description: |
| Claim:
In a windmill, the combination with a wind wheel, of a shaft on which said wheel is fixed, a supporting base upon which said shaft is journaled, a brake comprising movable friction disks surrounding said shaft for stopping the rotation thereof, means for imposing the axial thrust of said disks in both directions directly upon said base, a vane normally extending at right angles to the plane of said wheel, means for swinging said vane into a plane substantially parallel to that of said wheel, and means for automatically applying said brake when the vane is swung into position to discontinue the operation of the mill. |
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