Wolff, Alfred R · New York, J. Wiley & sons · leaf 86
ves on one side only. Fig. 10 is a section through the wind shaft, exhibiting the apparatusfor regulating the vanes. A is the wind shaft, which is bored through EUROPEAN WINDMILLS. 69 the centre, to admit an iron rod, B^ to pass freely through it; one endof this rod has a knol or onion on it, which… … upon the spindle of which is a sheave, F^ with a groove on its circum-ference to receive a rope, G, to which is hung the weight W. Thisweight serves to regulate the force of the wind upon the valves, andmay be adjusted to the nature of the work to be performed by themill. On the other end of the…
Windmills
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