Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 175
6i6. HEMISPHERICAL CUP WINDMILL.— The pressure of the wind is greater against the hol-low side of the cups than against the spherical side^and the mill rotates. Also used for anemometers. … 617. WINDMILL OF OUR GRAND-FATHERS, with reeling sails. A few still inuse in the Lnited States.
Mechanical movements
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