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Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries (1914)

Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley Publishing · leaf 198

An illustration from Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries, 1914, leaf 198
484. TYPES OF PROPELLERS. The Hirshpropeller. The generating line is the segment of anArchimedes spiral, with the leading edge of the bladescurved forward, face of the blades curved with increes-ing pitch. NAVIGATION, VESSELS, MARINE APPLIANCES, ETC. 195 … 485. SCREW PROPELLER. Threeblade. Reeves type. Curved to conform toan even thrust in all parts of the blades.Good form for launches. Pitch abouttwice the diameter. 486. SCREW PROPELLER.Four blades. Case type. W^ith outwardthrust. Narrow blades for high speed.Pitch two and a half times the…

Mechanical movements

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