Harper's boating book for boys; a guide to motor boating, sailing, canoeing and rowing (1912)
Davis, Charles G. (Charles Gerard), 1870-1959, ed · New York, London, Harper & Brothers · leaf 266
Fig. 16 Fig. 17 Fig. 18 … Fig. 19 until one has learned to distinguish a true propeller froman expanding pitch it is better to use what the maker sends. As in any other wheel, the central part of a propeller iscalled the hub. The fan-like projections are called theblades. According to the work there may be two, three,or…
Boats and boating
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
