Stationary steam engines, simple and compound; especially as adapted to electric lighting purposes . Pair of Porter-Allen Engines. ELECTRIC LIGHTING PLANTS. C5 many years, these points had not, up to a comparativelyrecent time,been recognized by constructing engineers, andfheir progress had been slow and difficult. The older firmswho were engaged in the building of what were then calledexpansion engines, were the first to detect this movementand its cause, and they led off, in a very conservative way,toward the construction of faster engines. The firmsalready mentioned as leading in the moveme
Stationary steam engines, simple and compound; especially as adapted to electric lighting purposes . Pair of Porter-Allen Engines. ELECTRIC LIGHTING PLANTS. C5 many years, these points had not, up to a comparativelyrecent time,been recognized by constructing engineers, andfheir progress had been slow and difficult. The older firmswho were engaged in the building of what were then calledexpansion engines, were the first to detect this movementand its cause, and they led off, in a very conservative way,toward the construction of faster engines. The firmsalready mentioned as leading in the movement toward cor-rect practice, came up to speeds far ahead of those commonamong other makers, and secured an advantage that wassufficient to prove unmistakably that they were in the righttrack. They did not, however, modify their designs in anygreat degree, with a view to adapting them to very highspeeds. Their valve-gears were not of a kind wellfitted to high speed of rotation; the builders, were them-selves disinclined to accept the risks undeniably attendantupon rapid change in this direction,
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectsteamen, bookyear1890
