. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . gt;n covers withstrong steel bolts and nuts recessedinto guard-rings having set cranks, shafting, and paddle-arms are of forged iron ; the paddle-wheels are of the feathering de-scription with outside rings. TheIlygeia on her ofVicial trial showedan average speed of 228 statutemiles, the best run being at the rateof 23^ statute miles. The absenceof vibration in both hull and en-gines, and the exceptionally
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . gt;n covers withstrong steel bolts and nuts recessedinto guard-rings having set cranks, shafting, and paddle-arms are of forged iron ; the paddle-wheels are of the feathering de-scription with outside rings. TheIlygeia on her ofVicial trial showedan average speed of 228 statutemiles, the best run being at the rateof 23^ statute miles. The absenceof vibration in both hull and en-gines, and the exceptionally smoothworking of the latter, were notice-able. Triple-Screw Engines.—Withinthe last four or five years twin-screw steamships have come gener- t- ,. r^ally into use, especially for trans- Fig. section,atlantic vessels and for ships-of-war. The United States Government, however, has gone astep further, and is now building a protected cruiser with three screws. The special ad-vantage of three screws in a cruiser, adapted l)oth for high speed when occasion re(iuires andfor slow speed for ordinary voyages, is that by stopping either one or two engines fuel can be.
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
