Identifier: streetrailwayrev02amer (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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.There will be two rooms with a fire wall between. Onecontaining the boilers, while the other is equipped withtwo 125-horse-power compound Westinghouse engines,with special fly wheels. The steam is used at 100 poundspressure. Two Westinghouse compound-wound genera-tors are driven by two of the Schierens perforated elec-tric belts, sixteen inches wide. Each generator has 100-horse-power capacit\-, with 54-inch pulle3-s. A NEW ELECTRIC WIRE COMPUTER. Vli present to our readers a simple de\ice justissued and compiled by William Cox, by meansof which the sectional area and the number ofwire suitable for lighting and other purposes are at onceobtained. It consists of a suitable foundation plate, witha re\ol\ing circular disc about S inches in diameter, bothgraduated in accordance with the factors of the formulawhose solution it gives. This is the well-known one:1 X c X 10.8 V in which 1 is whole length of circuit in feet; c is currentin amperes: v is drop of potential in volts: CM. is sec-
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tional area of suitable wire in circular mils. The methodof using this computor is shown by the following examplein which we assume 76 feet as the whole length of circuit:current 10 amperes, and loss 2 volts. Turn the discaround until the division representing 2 volts is oppositeand coincides with the one representing 10 amperes.We shall now find on the outer upper scale 4,100 circularmils, which corresponds to No. 14 wire, B. & S. gauge.This is therefore the number of wire suited to the cir-cumstance. We understand that ISlr. Cox has sold hisinvention to the Okonite Compan\-, Limited, 13 ParkRow, New York, to whom all inquiries should be sent. Tin-; young lady who graces our front cover thismonth is the German goddess of Fall, and not the Amer-ican • summer girl, of whom so much is seen at theseashore. 516 BALTIMORES NEW CABLE LINE. A Church with More Power than any other in the World—Interesting Tension Device-Differential Rope Drive. THE successful operation by the Baltimor

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