Abstract
August 18, 1835.—Numerous modifications of the steamboat paddle-wheel designed to reduce splashing and loss of power on entering and leaving the water were invented in the early days of steam navigation. One of the best known is the cycloidal wheel, in which each float, instead of being a single piece, is composed of several pieces of narrow width set one in advance of the other along the line of a cycloidal curve. Originally suggested by Joshua Field in 1833, this wheel was first patented by Elijah Galloway on Aug. 18, 1835. The wheels were used on the City of Dublin steam packets and were extensively adopted. Galloway was also the inventor six years earlier of a wheel in which the blades were automatically feathered. This wheel was successfully applied by William Morgan, by whose name it is usually known.
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Calendar of Patent Records. Nature 124, 285 (1929). https://doi.org/10.1038/124285a0
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DOI: https://doi.org/10.1038/124285a0