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 . s niereiy to attach the end ofthe rope to the yoke, after passing it over a pulley fixed sufficiently » Lardiicra Arts, &c. i, 138. ^ Crichtons Arabia.;;, IVi. Chap. 9.] Appliedtloii of Anhwih l Raise Water. t directand efricieiit, was (it is believed,) the identical mode adopted, and likfother devices of , it is still continued by their descend
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 . s niereiy to attach the end ofthe rope to the yoke, after passing it over a pulley fixed sufficiently » Lardiicra Arts, &c. i, 138. ^ Crichtons Arabia.;;, IVi. Chap. 9.] Appliedtloii of Anhwih l Raise Water. t directand efricieiit, was (it is believed,) the identical mode adopted, and likfother devices of , it is still continued by their descendants irAfrica and Asia. Its value in the estimation of the moderns, may belearned from the fact, that it is adopted in this and other cities for raisingcoals, &c. fiom the holds of ships; for which and similai purposes, it hasbeen in use for ages in Europe. It has also been used to work pumps,the further end of the rope being attached to a heavy piston working very long chamber or No. 12. Ancient and Modem method of raising water in Asia. This was probably one of the first operations, and certainly one of themost obvious, where luiman labor was superseded by that of animals, andin accoinplishiiig it, the pully itself w^as perhaps (.iscovered. This modeis common in Egypt, Arabia, India—thro\igh all Ilindostan, and variousother parts of the east. Mr. Elphinstone mentions a large well under thewalls of the fort at Bikaneer, from fifteen to twenty-two feet in diameter,and three hundred feet deep. In this well four large tuckets are used,each thus drawn up by a pair of oxen, and all worked at the same any one of them was let down, its striking the water, made a noiselike a great gun. But simple as this mode of raising water by animalsis, it is capable of an improvement equally simple, though not perhaps ol)-vious to general readers. It w^is not however left to modern mechanicians todiscover, hut is one among hundreds of ancient devices, whose origin islo
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Keywords: ., bookcentury1800, bookdecade1870, bookiddescriptiveh, bookyear1876
