International Library of Technology · Scranton, International Textbook Co. · leaf 94
k the trolley wire itself. Also, return cablesare sometimes used in connection with the track. 6. The Open-Condilit System.—The open-conduit sys-tem has not been put into very extensive use, because theexpense of construction is very high compared to the over-head-trolley system. Where it has been… … DDOQQP bnnnnni Fig. 2. on insulating supports in the upper part of a channel or con-duit, built in the roadway between the car rails, in the sameway as a conduit for a cable road. In fact, in severalinstances the old cable conduit has been fitted up for use asa conduit for railway conductors. The…
Electrical engineering
Internet Archive · Boston Library Consortium · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.], 1902, leaf 94](https://img.insideoutlibrary.com/img/1024/ia-electricengineer04inte-94-31.webp)
