Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 144
474. Section of wheel and case. 473. CURRENT MO-TOR.—A propeller revolv-ing within a case with ex-panding mouth to increasethe force of the current.A sprocket-wheel on therear end of the propellershaft with chain transmis-sion to shaft on suspen-sion frame. … 475. CURRENT WATER WHEEL.—The most efficient velocity of the wheelperiphery is forty per cent, of the currentvelocity. The horse-power is : Area of immersion of blades ,,^ ^^„ X (V—S)2 150 ^ V = Velocity of the stream; S = vel-ocity of periphery of wheel,—both in feetper second.
Mechanical movements
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