Creighton, William Henry Paul, 1859- · New York, J. Wiley & sons; [etc., etc.] · leaf 291
on these air-pumps.The maximum load on the pump occurs when the vacuum is about„18i, varying with the clearance. If the vacuum is less than that, * Expts. Surface Condensation. J. H. Smith, Engineering, March 23, 1906.t Engineering Mag., April. 1906. 270 THE STEAM-ENGINE AND OTHER HEAT-MOTORS. the… … Fig. 141. a trial made on a pump to demonstrate this, and the analytic dem-onstration is also given. The record of the trial of the pump doesnot present a perfect and uniform curve, because the pump-valvesare mechanically operated, and for the low vacuum they can be ad-justed only by the sound…
Steam-engines · Heat-engines
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