Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 240
irements. In brief,the principle of this consists of automatically supplyingmore steam to the engine when the boiler pressure lowers,and less steam when the steam pressure increases. Thishas been brought to so fine a point that practically a con-stant pressure is maintained on the boilers with… … Fig. 94buffalo mechanical draft apparatusHorizontal Tandem Fans—Casing and Economizer Partly Re-moved to Show Damper der adverse conditions of weather, when a blower properlyapplied needs only .to be started and run during such pe-riods. While the capacity of a chimney, either with forcedor natural…
