| 单词 | pulsometer pump |
| 释义 | > as lemmaspulsometer pump 2. More fully pulsometer pump. A kind of vacuum pump with two chambers into which steam enters and condenses, creating a partial vacuum which draws water, etc., up into the chambers, one being filled while the other is emptied. ΘΚΠ society > occupation and work > equipment > pump > [noun] > pumps for producing vacua vacuum pump1858 mercury pump1869 pulsometer1873 mercury vapour pump1926 roughing pump1958 1873 Manufacturer & Builder 5 220/3 The Pulsometer, or magic pump, a patent of one year, is a New York invention, and a very complete one. 1891 Daily News 2 Sept. 3/1 The water is heated by means of a horizontal tubular boiler, a six-horse power engine, a centrifugal pump, and two pulsometer pumps. 1908 A. J. Bowie Pract. Irrigation 116 The pulsometer, while simple in construction, is subject to the same objections as direct-acting pumps, being a heavy steam consumer. 1958 Chambers's Techn. Dict. 686 Pulsometer pump, a steam pump in which an automatic ball-valve..admits steam alternately to a pair of chambers. 1982 Gleaner (Kingston, Jamaica) 3 May 5/3 (advt.) Suppliers of Sigmund pulsometer pumps. < as lemmas |
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