Wolff, Alfred R · New York, J. Wiley & sons · leaf 77
e cir-cumference of the wheel, and thereby produces such a resistance thatthe mill may be at any time stopped. The brake wheel is hererepresented on the old construction; i.e., the face wheel, which issupposed to work a trundle not shown in the figure. 6o THE WINDMILL AS A PRIME MOVER. The lower… … Fig. 6. of two long timbers, which form a large cross upon the ground, andwhich constitute the base of the whole mill. The post is secured in itsvertical position by four oblique braces, F, F, F, F, which extend from theground cross to the middle of it; leaving ten or twelve feet of the upperpart,…
Windmills
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