1800 Mechanical Movements, Devices and Appliances by Gardner Hiscox

Author:Gardner Hiscox
Language: eng
Format: mobi, epub
ISBN: 9780486165189
Publisher: Dover Publications
Published: 2012-10-05T05:00:00+00:00

835. REVERSING SCREW PROPELLER.—The central shaft is the driver, and has a small longitudinal motion by a clutch and lever to shift the position of the blades. The outer-end sleeve is fast on the driving shaft, and carries the blades in sockets on each side of its centre. A hollow short shaft, free on the driving shaft, but fixed longitudinally, turns in a socket on the stern post, A rack on each side meshes in a gear sector attached to each blade socket, so that the blades are reversed by the fore-and-aft movement of the driving shaft.

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