. The street railway review . tracks in the streets, the placing of switchesand turntables, the repair of the pavement between tracks, the re-moval or limitation of the number of tracks, in the interest ofpublic travel, the frequency with which ear- should he run for thepublic convenience, the -lopping of car- at street lie useof fenders, the rate of -peed to he maintained, the sale of general!, of the conduct and operation of the experience might show to he necessary, in addition to or inamendment »f those specified in the consent for the protection oflife, the accom
. The street railway review . tracks in the streets, the placing of switchesand turntables, the repair of the pavement between tracks, the re-moval or limitation of the number of tracks, in the interest ofpublic travel, the frequency with which ear- should he run for thepublic convenience, the -lopping of car- at street lie useof fenders, the rate of -peed to he maintained, the sale of general!, of the conduct and operation of the experience might show to he necessary, in addition to or inamendment »f those specified in the consent for the protection oflife, the accommodation of the public, and the avoidance of injury: private property. Such regulations are not invasions of thitract right- of the company, ami are jusl and reasonable. SLOTTED FIELD MAGNET CONSTRUCTION The method of pole construction shown in the accompanying illus-lopted by the Phoenix Electric Manufacture,of Man-field, t >.. a- a means for obtaining sparkless commutationweight of material or expenditure of power. The. t RING WITH I o I magni • poll , without poleimmutating tips ,1 by hollowing out ihi d by Mi. S. withig thep. I he greater thi in the the liabilil illui of the highly lure reaction and allow- the brushes to remain fixed foi .ill loadsI he -lots in the pole face also connect the slot- m the body of thepole wnh the armature chamber and supplj abundant ventilation tothe interior oi the field coil- whence the heat is usually unable toi ;truction also permits the pole piece- to be cast piece with the frame and the field coils are -lipped over the pole, without removing poll shoes as is usually necessary. In machines having solid magnet cores it is necessary to limit thei roltagi of the armature coil undei commutation to abouthi ordei to avoid sparking, and many designers limit thisreactive voltage to four or five volts. \ [50-kw. slotted pole ma-chine having a reactive voltage of 11 volts is stated to run withoutshowing the leasl signs of sparkin
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
