Stationary steam engines, simple and compound; especially as adapted to electric lighting purposes . lity when properly cared for and used with boilerssupplied with good water. Its disadvantages are, the ra-pidity with which it sometimes wears, when it is not keptwell lubricated, or when it is exposed to the action of steamcarrying over from the boiler acidulated or dirty water, thedanger of injury to the cylinder or its heads when primingoccurs, and the proneness of the attendant to neglect its ELECTRIC LIGHTING PLANTS, 129 repair when it requires such care These disadvantageshave sometimes p
Stationary steam engines, simple and compound; especially as adapted to electric lighting purposes . lity when properly cared for and used with boilerssupplied with good water. Its disadvantages are, the ra-pidity with which it sometimes wears, when it is not keptwell lubricated, or when it is exposed to the action of steamcarrying over from the boiler acidulated or dirty water, thedanger of injury to the cylinder or its heads when primingoccurs, and the proneness of the attendant to neglect its ELECTRIC LIGHTING PLANTS, 129 repair when it requires such care These disadvantageshave sometimes proved to be so serious, as to give manyengineers a very strong prejudice against the valve ; on theother hand, this unfavorable prejudice seems to be nowgiving place to a decidedly favorable opinion, assuming thatthe valve is well made and is to go into good hands, and tobe used under proper conditions, and these and some othervery successful makers have definitely adopted the pistonvalve as a feature of their standard designs ; it is evencoming into use in marine engines of the largest size. In. Armington & Sims Valve. the engine here under consideration, the valve is said by theconstructors to have proved eminently successful and tohave proven more durable than their earlier constructions,in which they adopted a balance flat valve. It is probablytoo early, as yet, to fully decide what are the exact relativemerits of the two kinds of valve. In this particular case,the removal and replacement of the piston valve can bedone quickly and inexpensively, and a spare valve beingkept on hand, it is probable that its use may prove econom-ical and satisfactory even where the water used for theboiler is not of the best. One of the most important, novel, and beautifully ingen- ! 3o STEAM ENGINES FOR ious details of this engine, is its peculiar arrangement ofgovernor and eccentrics. These parts are exhibited in twoengravings. The regulator is precisely the same, in principle, as thosealrea
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectsteamen, bookyear1890
