Stationary steam engines, simple and compound; especially as adapted to light and power plants . ke of piston, and making250 to 350 revolutions per minute. These proportions areadopted, probably, principally with a view to meeting thedemands of electric lighting. The essential and most peculiar feature of the Ball en-gine, and that which gives it a place in this little treatise,is, as has been already stated, its governor. The Ball Governor is, in the main, like the governorswhich have been described as controlling the several engineswhich have been immediately herein before described. Itconsi
Stationary steam engines, simple and compound; especially as adapted to light and power plants . ke of piston, and making250 to 350 revolutions per minute. These proportions areadopted, probably, principally with a view to meeting thedemands of electric lighting. The essential and most peculiar feature of the Ball en-gine, and that which gives it a place in this little treatise,is, as has been already stated, its governor. The Ball Governor is, in the main, like the governorswhich have been described as controlling the several engineswhich have been immediately herein before described. Itconsists of a governor-pulley, from the arms of which ELECTRIC LIGHTING PLANTS. 141 are swung a set of weights, which are arranged to move inthe plane transverse to the shaft on which the pulley is car-ried. These weights, or balls, are restrained from movingoutwards, under the influence of centrifugal force, by a set ofstrong steel helical springs, secured, at one end, to the balls,and at the other, to the rim of the pulley. Any movementof the weights, in either direction, causes a motion of the. The Ball Governor. eccentric, resulting in the alteration of the throw of thevalve in such a direction, and to such an extent as to bringthe engine very exactly to speed. To this extent, the Ballgovernor is identical, in its general construction and in its])rinciples and mode of action, with those already familiarto the reader. To this extent, it is possessed of the same 142 STEAM ENGINES FOR qualities as the others of its class, and it has been seen thatgood workmanship and correct proportions and adjustmentmay give wonderful nicety of regulation. To this governor, as commonly built, Mr, Ball adds a re-markably ingenious, and singularly simple yet perfect, in-vention ; it is exhibited in the accompanying figures. Thefirst of these illustrations shows the governor-pulley detach-ed from its shaft, and does not show the eccentric;it presents only the essentially novel part of thedevice. It i
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectsteamen, bookyear1902
