Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 66
on. (Fig. 82.) Historical Introduction. The introduction of the direct-acting steam-pump markeda point of deviation, and it entered the field almost without arival, and at a time when economy was overshadowed by itsconvenience. In the brief description given of these three most prominentclasses of… … Fig. 82. In pumps of this construction there are no weights in themoving parts other than that required to produce sufficientstrength in such part for the work they are expected to per-form, and, as there is consequently no opportunity to store uppower in one part of the stroke, to be given out at…
Hydraulic machinery · Pumping machinery
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