Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 226
822. OUTWARD THRUST PROPELLERWHEEL.—The blades pitch fonvard to throw thewater outward as well as backward, to increasethe thrust or power of the wheel. 823. SCREW PROPELLER. Four blades. Or-dinary form for heavy draft tugs and tow-boats. 824. SCREW PROPELLER, Griffithmodel. The inclination of the… … 825. SCREW PROPELLER, Hodgsons model.The blades are curved backward to prevent the cen.trifugal direction of the water when passing the blades.Claims on fore-and-aft direction of blades by inventors,are not in harmony with the best practice in propelleidesign.
Mechanical movements
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