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 241
to be started and run during such pe-riods. While the capacity of a chimney, either with forcedor natural draft, is limited, the natural efficiency may be 228 Steam Engineering materially increased^ so that if more boilers have beenadded than the chimney will properly handle without someassistance,… … Fig. 95three-quaeter housing steel plate fan with double hori-zontal engine Co.^ Buffalo^, N. Y. A portion of the casing is removed inorder to show the location of the economizer. Fig. 95 shows another style of fan having double hori-zontal engines^ one on each side of the crank shaft, which…
