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 . placed in all welts:—a proof that many were open and the waterraised in buckets. Pumps are also described, in old works on husbandry, gardening, &c,from which it appears that they were often used to raise water for irriga-tion. In the Agrlculturre, being the mystery of Husbandrydiscovered and laid open, Lon. 1675, directions are given respecting va
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 . placed in all welts:—a proof that many were open and the waterraised in buckets. Pumps are also described, in old works on husbandry, gardening, &c,from which it appears that they were often used to raise water for irriga-tion. In the Agrlculturre, being the mystery of Husbandrydiscovered and laid open, Lon. 1675, directions are given respecting va-rious modes of making and working them; and it is particularly di-rected that the rods be made of such a length as to permit the suckers orupper boxes to descend at every stroke below the surface of the waterin the well; this it is observed, saves much trouble. The same remarkaccompanies an account of windmills for watering land [pumps drivenby them] in the old Dictionarum Rusticum. In the of Hungary pumps were early introduced, but at Avha»period is uncertain. It is not improbable that those described by Agn- » Theatre ties Instruiiiens, 1579. Maitlands History of London, p. 297, Chap Pu7nps in German Mines. 219. No. 88. Pump and Pistons fromAgriuola. cola, were similar to such as were used in some of the same mines hy the ancients, and have always formed part ofthe machinery for discharging water irornthem since the fall of the Moriuin that are figured in ihe De Re Metallica,are extremely simple, and with one execu-tion are atmospheric or sucking pumj) are all of bored logs. Some are sin-gle pumps, and are worked by men withlevers, cranks, and also by a kind of pendu-lum. Others are double, triple, &:c., andworked by water wheels. Of the last someare arranged in rows, and the piston rodi>raised by cams as in a stamping mill; theAveight of the rods carrying them are placed in tiers one above ano-ther; the lowest one raises the wa
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Keywords: ., bookcentury1800, bookdecade1870, bookiddescriptiveh, bookyear1876
