Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 382
Fig. 832. Fig. 832 is a section and partial elevation of the air-chamber of one ofLeavitts pumps. It is of the Thames Ditton variety, in which the whole chargeof water is drawn into the lower chamber, and a portion corresponding to thedifference between the two plungers raised to the full head in…
Mechanical drawing
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