. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . HYDRAULIC MACHINES, VARIETIES OF. 1917. The thickness of the sheet of water received by a slow wheel from an overfall, should be atthe most 0™35 to 0^*40; with respect to the percentage of work and the ready introductionof the water into the wheel, the best thickness is 0°25. The upper edge of the sluiceshould be rounded on the side of the water; often the sluice is provided on this side with astrip of sheet iron curved from left to right to guide the lower
. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . HYDRAULIC MACHINES, VARIETIES OF. 1917. The thickness of the sheet of water received by a slow wheel from an overfall, should be atthe most 0™35 to 0^*40; with respect to the percentage of work and the ready introductionof the water into the wheel, the best thickness is 0°25. The upper edge of the sluiceshould be rounded on the side of the water; often the sluice is provided on this side with astrip of sheet iron curved from left to right to guide the lower fillets before they reach the sluice,and consequently lessen the contraction. V COS V V Instead of satisfying the relation v = -^— , most builders fulfil the condition v =Vcos. Vr, 2which is less favourable with respect to the percentage of work, but which allows of the floatsbeing fixed in the dii-ection of the radii of the wheel ; this arrangement of straight floats sim-plifies the construction of wheels. To utilize, in part at least, the relative velocity of the water upon the floats, each straight floatis continued by a counter-float inclined upon the float and
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Keywords: ., bookcentury1800, bookdecade1870, bookidsp, booksubjectengineering
