Rail Bond

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An image of a protected bond. The curved bond is protected by the terminals, the railway proper of the trolley.The bond is designed to withstand tension created by contact with the trolley.


International Correspondence Schools A Textbook on Electric Lighting and Railways (Scranton, PA: International Textbook Company, 1901)


TIFF (full resolution)

2819×526, 227.3 KiB

Large GIF

1024×191, 23.4 KiB

Medium GIF

640×119, 12.2 KiB

Small GIF

320×59, 4.9 KiB