A descriptive and historical account of hydraulic and other machines for raising water, ancient and modern : with observations on various subjects connected with the mechanic arts: including the progressive development of the steam engine . al old writers on one represented by the figure is described by Belidor as the inven-tion of M. Morel, who raised water by it 15 or 1(5 feet. Similar machineswere known in the preceding century. A pendulum for raising water isdescribed at page 95, of the first volume of machines approved by theFrench Academy, and at page 205, is a hydraulic m
A descriptive and historical account of hydraulic and other machines for raising water, ancient and modern : with observations on various subjects connected with the mechanic arts: including the progressive development of the steam engine . al old writers on one represented by the figure is described by Belidor as the inven-tion of M. Morel, who raised water by it 15 or 1(5 feet. Similar machineswere known in the preceding century. A pendulum for raising water isdescribed at page 95, of the first volume of machines approved by theFrench Academy, and at page 205, is a hydraulic machine by A. DeCourdemoy, similar to the one we have copied ; except that square tubeswere used instead of open gutters; they were also of equal length, andattached to a rectanguhir frame, but were suspended and worked in thesame manner as No. 33. A different mode of working these machines was devised by an Eng-lish engineer. Instead of suspending the frame like a pendulum, hemade the lower part in rockers like those of a cradle ; theseresting on a smooth horizontal plane, a slight impulse put the whole inmotion. The lowest gutters at each oscillation dipped into the water, andraised a portion, as in the preceding No. 34. Dutch Scoop. Among other simple devices, is the Dutch scoop, frequently used bythat people in raising water over low dykes. ft is a kind of box-£.hovel ?4 The Swape. [Book I. suspejided by cords fiom a triangular frame, and worked as representedin the figure. By a sweeping movement, an expert laborer will throwMp at each stroke, a quantity of water equal to the capacity of the siiovel,although from its furni, such a quantity could not be retained in it. The Flash Wheel, is another contrivance to raise large quantities of wa-ter over moderate heights, being extensively used in draining wet lands,particularly the fens of England. It is made just like the wheel of a steam-boat, and when put in rapid motion, geneially by a w^indmill, it pushes
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Keywords: ., bookcentury1800, bookdecade1870, bookiddescriptiveh, bookyear1876
