File:The street railway review (1891) (14759306045).jpg

Identifier: streetrailway03amer (find matches)
Title: The street railway review
Year: 1891 (1890s)
Authors: American Street Railway Association Street Railway Accountants' Association of America American Railway, Mechanical, and Electrical Association
Subjects: Street-railroads
Publisher: Chicago : Street Railway Review Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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Text Appearing Before Image:
owconduits made acces-sible by raising sec-tions of the floor.The feeder distribu-tion board, and dyna-mo controlling boardare separate, bothbeing of white Italianmarble set five feetfrom the wall. Everyfeeder and every ma-chine has a fuse,ammeter, switch andWestinghouse circuitbreaker. B e si d e sthe station light-ning arresters thereis a Westinghousetype K arresterevery mile along thetrolley line. Ar-rangements are madeto reverse the polar-ity of circuits everythree months on ac-count of electroysis.The general arrange-ment of the stationcan be seen by aglance at the ground plan. The difficulties of construction were very great,both on account of the quicksands on which the plantwas built, and because it was originally much below thecity grade. The architectural features of the buildingsare due to S. S. Benian and need no commendationfrom us. The company is also erecting adjacent to their powerhouse, a large and fully equipped repair shop, paint shopand stable. ICE AS AN INSULATOR.
Text Appearing After Image:
A SECOND case has come to our notice within thelast month in which the freezing of the ground hasacted to insulate the rails from the earth and con-sequenily to overload the track feeders. In this case theroad was a new one, using of course no ground plates.The man in charge of the station noticed that there wasan abnormal amount of current flowing. Suspecting thecause he dug down to the track feeders and found them red hot. A few min-utes more and theymight have melted,causing a shut-down;all of which goes toprove that if a roadis dependent on itstrack and feeders fora return it shouldcalculate its feedersto carry the maxi-mum current everdemanded, and noth-ing but ground plateswill obviate this ne-cessity. It is notgenerally known thatice is a good insula-tor, but those whohave tried to get cur-rent from a sleet-covered trolley wire,or those who saw thebare arc light wiresat the St. Paul icepalace fastened tothe walls by freezing,have no reason todoubt its insulatingqualities. A N E

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