Modern Pumping and Hydraulic Machinery as Applied to All Purposes: With Explanation of the Theoretical Principles Involved, Construction, Working, and Relative Advantages. Being a Practical Handbook for Engineers, Designers and Others

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Griffin, 1913 - Hydraulic machinery - 473 pages
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Page ii - Requirements ai to Quantity.— Storage Reservoirs.— Purification.— Service Reservoirs.— The Flow of Water through Pipes. — Distributing Systems. — Pumping Machines.
Page 53 - J ; the main valve G consequently receives a differential motion compounded of the separate motions given to the two ends of the lever L. If this lever had a fixed centre of motion at the outer end M, the steam would be cut off in the engine cylinder at a constant point in each stroke, on the closing of the...
Page 53 - J, which has a motion independent of the engine cylinder ; its slide valve I, being actuated by a third lever N, coupled at one end to the intermediate lever L, and moving on a fixed centre P at the other end. The motion of the piston in the subsidiary cylinder J is controlled by a cataract cylinder K on the same...
Page 55 - Fig. 11, is opened at the beginning of each stroke by the motion of the subsidiary piston, which is controlled by the cataract ; and a pause is consequently given at the completion of each single stroke of the engine, which allows time for the pump valves to fall to their seats.
Page 53 - Fig. 12, is actuated by the piston rod through a lever H, working on a fixed centre, -which reduces the motion to the required extent and reverses its direction. The valve spindle is not coupled direct to this lever, but to an intermediate lever L, which is jointed to the first lever H, at one end; the other end M, is jointed to the...
Page 252 - The compressed air thus automatically admitted into the ejector presses on the surface of the sewage, driving the whole of the contents before it through the bell-mouthed opening at the bottom, and through the outlet pipe B into the iron sewage rising main or high-level gravitating sewer, as the case may be.
Page 405 - The resistance which is opposed to a pump rod in raising water, is ~equal to the weight of a column of water whose base is the area of the piston, and...
Page ii - As a companion for the student, and a constant reference for the technical man, we anticipate it will take an important position on the bookshelf.
Page 53 - K, on the same piston-rod, by which the motion of this piston is made uniform throughout the stroke ; and the regulating plug, Q, can be adjusted to give any desired time for the stroke. ' The intermediate lever, L, has not any fixed centre of motion, its outer end, M, being jointed to the piston-rod of the subsidiary cylinder, j...
Page 227 - The next point concerns the supply of water to the dry pump for water scaling, clearance filling, cooling, and vapour condensing. When starting the pump the filling valve G must be opened for a minute or so to enable the vacuum to draw in a supply from the hot-well of the wet pump. The valve is then...

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