. The street railway review . ^ lossthen will be the extra fuel mentioned. Over against thisis the saving which is due to the closing down of theboilers and engines in the cable plant. The saving inlabor resulting from this is $28. To this must beadded the saving in oil, repairs and incidentals which ismade when the cable steam plant is shut down. This isfigured at $7 a day, so that the net saving by operatingthe cable motor is $28 per day. In other words it ischeaper to generate power in one plant than in two. The motor has done the work in a perfectly satisfactorymanner and there has been no
. The street railway review . ^ lossthen will be the extra fuel mentioned. Over against thisis the saving which is due to the closing down of theboilers and engines in the cable plant. The saving inlabor resulting from this is $28. To this must beadded the saving in oil, repairs and incidentals which ismade when the cable steam plant is shut down. This isfigured at $7 a day, so that the net saving by operatingthe cable motor is $28 per day. In other words it ischeaper to generate power in one plant than in two. The motor has done the work in a perfectly satisfactorymanner and there has been nothing so far that wouldsuggest any uncertainty as to the success of the experi-. MOTOK DRIVING CAKLK—CHICAGO CITY KA1L\VA^^ 4G2 ^tiectif^ailM^j\eylW ment. The ammeter shows a great variation in thepower required to pull the cable. In fact, the variationis much more sudden and violent than would be the casewith an electric road consuming the same amount ofpower, although it is not nearly as violent as on smallelectric roads. The motion of the ammeter pointer is slow but it is nothing uncommon to see it rise or fall 200to 300 amperes inside of 20 seconds. The switchboard used with the motor is an interestingpiece of work. The motor is shunt wound, and of coursea rheostat is placed in the shunt field. As there is dan-ger that the shunt field will puncture the armature insu-
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
