. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . 1920 HYDRAULIC MACHINES, VARIETIES the gearing necessary to transmit the motion costs as much as the wheel itself; it requires a longtime to start them ; they do not last long unless they are used for mills oflering a perfectly regularresistance, and their various parts require to be frequently screwed up, which renders them unfitfor mills that work uninterruptedly. M. Sagebien has himself confirmed our opinions as far asthe too low velocity of his whe
. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . 1920 HYDRAULIC MACHINES, VARIETIES the gearing necessary to transmit the motion costs as much as the wheel itself; it requires a longtime to start them ; they do not last long unless they are used for mills oflering a perfectly regularresistance, and their various parts require to be frequently screwed up, which renders them unfitfor mills that work uninterruptedly. M. Sagebien has himself confirmed our opinions as far asthe too low velocity of his wheels is concerned, by exhibiting the machinery of the water-worksestablished by him, for the supply of Paris, at Thilbardon, on the Marne. The pumps are workedby one of his wheels ; but the velocity of the wheel is so small that it was found necessary to havea special shaft to drive the pumps, revolving about three times faster than that of the wheel, withwhich it is connected by a pair of spur-gear. The defect which we pointed out has therefore pro-duced another; for gearing should be avoided as much as possible in water-works designed forpermanent service, and in which t
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Keywords: ., bookcentury1800, bookdecade1870, bookidsp, booksubjectengineering
