Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 240
uirements. 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…
