. A manual of marine engineering: comprising the design, construction, and working of marine machinery. Feathering Screws.âYachts and ships which are required to sail as wellas steam cannot well do the former when the screw is stopped, unless somemeans be adopted of feathering the blades, so that they are nearly in a fore LIFTING SCREWS. 337 and aft plane, or else by withdrawing the propeller altogether from the late Bennett Woodcroft patented, in 1844, a plan for feathering theblades, which in a modified form was fitted by Messrs. Maudslay, Sons, &Field to several ships. The blades,
. A manual of marine engineering: comprising the design, construction, and working of marine machinery. Feathering Screws.âYachts and ships which are required to sail as wellas steam cannot well do the former when the screw is stopped, unless somemeans be adopted of feathering the blades, so that they are nearly in a fore LIFTING SCREWS. 337 and aft plane, or else by withdrawing the propeller altogether from the late Bennett Woodcroft patented, in 1844, a plan for feathering theblades, which in a modified form was fitted by Messrs. Maudslay, Sons, &Field to several ships. The blades, of which there are two, have shanksfitting into the boss, to which short levers are secured inside the boss; theselevers are connected by links to a sliding collar outside the boss, which iscarried round with the shaft, but is capable of being moved fore and aft onit by means of a pair of bell-crank levers actuated by a screw from on it was desired to sail, the blades were moved round into the fore andaft position by sliding the collar from the boss, Bevis Patent Feathering Screw.â
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