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)is fitted. It is described as awooden plug covered with lea-ther and loaded with lead, soas to mak(> it descend in the cy-No. IO. Pressure Engine from Fludf. A. D. 1618. by its put this machine in operation, the cylinder and pipe D are first filledwith water through the fu\u. ?1 and small cock, after which tlie latter isclosed. The pl
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)is fitted. It is described as awooden plug covered with lea-ther and loaded with lead, soas to mak(> it descend in the cy-No. IO. Pressure Engine from Fludf. A. D. 1618. by its put this machine in operation, the cylinder and pipe D are first filledwith water through the fu\u. ?1 and small cock, after which tlie latter isclosed. The plug of the thr«e-way cock is then so arranged, that its twoorifices coincide only with the uj>j>cr j)a-it of A, and with C, when thepressure of the column in A will force up the piston, and with it .all thewater previously in the cylinder, which is thus compelled to ascendthrough the upper valve into the disdiarging pipe B. When this hastaken pac-e, the vessel Ci, at one end of the rod that passesthrougli tlie shank of the plug, lias become filled with water, from the smalljet issuing from A, and descending, turns the plug of tlie cock, so as toclose the comr inication of the upper part of A with C, and open it be-. Imp-ovcd Pressure Engine from Belidor. tween C aiicl tlic lower part of A, upon which the piston descends in thecyliiHlei- and the foui water in C escapes through the lower end of A andruns to waste. By the time the piston reaches the bottom of the cylinder,the latter is refilled with water by the pressure of the atmosphere, as in acommon pump ; and the contents of G have escaped through an orificein its bottom, which is closed by a valve—this valve being opened bya projecting pin upon which the vessel descended, as shown in the soon as G is emptied, the weight on the opposite end of the rod prepon-derates, and turns the plug of the cock into its former position ; and thusthe [)lav of the machine is continued without intermission.
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Keywords: ., bookcentury1800, bookdecade1870, bookiddescriptiveh, bookyear1876
