Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 187
y pairs with the two cavities intowhich that box is divided. The figuregiven shows a section of the cylinder,and a view of the arrangement of thepair of valves corresponding to thenearer half of the cylinder reservoir.The piston is represented as at thebottom of the stroke. It is evident Schabaver… … K Jgsgggj^ fag 3 EL HYDRAULIC ELEVATORS. 171 lower valve will be closed by the pressure, while the upper one will riseand allow the water just admitted to be discharged. It is unnecessaryto observe that the action of the second pair of valves corresponds tothat of the first, as just described; so…
Machinery · Scientific apparatus and instruments
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