File:The street railway review (1891) (14573735827).jpg

Identifier: streetrailwayrev07amer (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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the crowded city center, which is purely esthetic,the most marked advantage is the lack of necessity for changing thebatteries for charging. But this advantage is offset by the fact thatas the charging is done en route the current for charging must betransmitted over the feed wires in addition to the current necessaryfor propelling the car with its extra weight of battery, thus increasingthe loss due to charging. The power transmitted may be dividedas follows: 1. For propelling the car without the battery. 2. For propelling the extra weight of the battery. 3. For charging the battery. I regret that I have been unable to get accurate data showing therelation of these items to each other. But I feel satisfied that theextra cost of feeder cables due to the extra power transmitted andthe decrease in efficiency will more than offset any saving in the costof linework, while the cost of operation must be, and is acknowledgedto be in excess of the less complicated system in common use in this
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CHARGE AND DISCHARGE CURVKS. 728 ^Md%ihv^S\g/AC\^ Cduntry. The fact that overhead linesare in use up to the proscribedlimit and that the battery is only used where it is compulsory speaksvolumes. It is also significant that the commissions appointed by thelarger roads in England and Scotland to investigate the variousmethods of traction in vogue throughout Europe and America havevetoed any form of battery car. The following data are taken from the writings of Mr. Dawson andothers: Comparative data of accumulator cars. ^ Paris. Berlin. \ lenna. Lead. Lead. Cop. Znc. Passengers carried 50 3 ^^ Empty car, weight, lbs 18.081 19,843 16,097 Loaded ».99 2.«» ^l.OSr, Weight of cells, lbs 3.T49 7,270 3,969 Number ol cells 56 88 136 Capacity ol cells, ampere-hours 230 1.30 30(1 Power per car-mile required at power house. Board of Trade units I^O I-O^ l-S Data of accumulator cars running in Paris. Number of cells ^8 Number of plates per cell 1 Size of plates, ins --- 7Ji x 7K Thickness of neg

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