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 202
he axis of one ofthese pumps is shown in Fig.49, and another section, alsovertical, through the axis, inFig. 50. Here, there are tworevolving drums G A G, bothattached to the same axis D.They revolve, as before, inwater-tight boxes, but the entrance of the water takes placefrom the space O I,…
Machinery · Scientific apparatus and instruments
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