. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . , and have been curved upon amodel ; they are fixed upon angle-iron curved upon the same model, and riveted to the shroud-ings. Each set of arms are broad in the middle, with flat iron braces bolted to the arms ; and thethree shroudings are held by round tie-bars. This mode of construction is at once light andstrong. The duty of Poncelets wheels varies from 0 • 50 to 0 • 65. In terminating our review of common water-wheels we ought to call attention to the
. Spons' dictionary of engineering, civil, mechanical, military, and naval; with technical terms in French, German, Italian, and Spanish . , and have been curved upon amodel ; they are fixed upon angle-iron curved upon the same model, and riveted to the shroud-ings. Each set of arms are broad in the middle, with flat iron braces bolted to the arms ; and thethree shroudings are held by round tie-bars. This mode of construction is at once light andstrong. The duty of Poncelets wheels varies from 0 • 50 to 0 • 65. In terminating our review of common water-wheels we ought to call attention to the float-wheels of M. Colladon, a Swiss engineer. These are wheels with straight floats, and are designedto utilize the power of streams very variable in level, and offering only a very low fall. These HYDEAULIC MACHINES, VARIETIES OF. 1921 wheels utilize the impulsive force of the water, and to prevent their being submerged in flood timeM. Colladon places their axes upon movable supports, which renders them capable of being raised orlowered at pleasure. It is a very primitive kind of wheel, having a duty inferior to that of common. 4049. ooooooooooo oooooooooooo p,.;f^■■■■:^...0■..->.,.^>0^^^O0^LyC■OC^C^ ^- — [ OOOOOOOOOOOO ^GOOOOGOOOOOO J^
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Keywords: ., bookcentury1800, bookdecade1870, bookidsp, booksubjectengineering
