signals under electrification

[NW Mailing List]

Jim,

     I cannot confirm or deny your hypothesis, but in my research for 
the Electric Book, I found they had to convert the signals, that were in 
place before installation from DC power, to AC power which is what the 
electrification used.  All the photos I have seen show semaphores, but 
color position lights were technically possible.

  Mason Cooper.


On 2/27/2017 12:59 PM, NW Mailing List wrote:
> Having grown up in Bluefield, PL's all I can remember. I don't have 
> any documentation, but I doubt semaphores lasting until the end of 
> electrification in 1950.
>
> Jim Nichols
>
>
> On Monday, February 27, 2017 11:48 AM, NW Mailing List 
> <nw-mailing-list at nwhs.org> wrote:
>
>
> I seem to recall that the first installation of PL signals on the N&W 
> was around 1920.  The brunt of the Pokey electrification was completed 
> by this time, so it was signaled with semaphores on the catenary 
> supports.  I don't recall seeing any photos showing PL signalling in 
> the electrified section.
> Conjecture:  The N&W needed/chose to retain semaphore signalling in 
> electrified territory until electrification was discontinued in 1950.  
> I would assume that as the catenary was removed, PL signals were 
> installed in this area.  So Bluefield to Iaeger would have seen PL 
> signals for only about ten years - from the end of electrification 
> until the change to CPLs around 1960.  Would this make the electrified 
> part of the Pokey the last portion of the N&W to be upgraded from 
> semaphores to PLs?  Can anyone confirm, deny or add to any of my 
> speculations?
> Jim Cochran
>
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