International Library of Technology · Scranton, International Textbook Co. · leaf 222
in Fig. 3, where thecurve r is the center line of therails and / the path of the trolleywire. The amount of offset meas-ured at the middle of a 90° curve at the point indicated by the arrows in the figure snould beabout as follows: Radius of Curve in Feet. Offset. 40 16 inches. 60 13 inches. 60 ,… … 4 ELECTRIC RAILWAYS. § 22 wire followed the center line of the track, as the wheel wouldlie diagonally across the wire and cause a large amount ofwear on curves. Evidence of this can be seen on manyold lines. 4. Li some places guard ^vires are required above thetrolley wires. These are strung about…
Electrical engineering
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