Photograph 7/59, by Dr. J W F Scrimgeour
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THE SIGNAL BOX |
OVERSEAS |
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Photograph 7/59, by Dr. J W F Scrimgeour |
Wood Street tower opened in 1917 and controlled the commencement of three-track working in the Chicago suburban area. The middle of the three tracks (seen in the distance) was bidirectional and was used according to the rush-hour traffic flows.
 Photograph 7/59, by Dr. J W F Scrimgeour |
The tower was provided with a 40-lever Union Switch & Signal mechanical frame dating from the commissioning of the tower in 1917.
 Photograph 7/59, by Dr. J W F Scrimgeour |
A general view looking towards the tower from the Clyburn direction. Signals were power-operated three-position upper quadrant, the left hand post has two main arms to indicate the route on the three-track section towards Madison. There is also a miniature arm mounted near the base of this post.
Note that the C&NW Railroad was the only line in the USA to use left-hand running.
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Comments about this article should be addressed to John Hinson |