Western Railroad Discussion > Late for signal Sunday but.....

I've posted a few times on here before asking this and that about signal systems and such. This time a new question has come to mind about polar relays and the various types. Have any polar relays been developed that did not have a "neutral" portion incorporated in the design? If not, was there just some sort of simple relay (ie something like a DN-11) that was just used instead? Just some pondering as I'm interested in how they may have been set up, if they existed.

Jon

Not sure if its an answer, but I have a SP signal thats yellow in all positions. That is, what ever the polarity it remains fixed in one position.
Roger Beckett

Interesting, what kind? I'd assume H2 as those seem to be about the only types ever seen in any pics of the SP (other than indicators). I think I have seen some tri-lights, but have been unable to determine the type.

Here are some pictures of the mech. form a H2 with only one indication, yellow.
Used on the SP.
Is this the type of signal you were asking about?
Todd Montgomery
Springfield OR



Edited 1 time(s). Last edit at 12/30/13 22:06 by coosbaytoday.

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That's interesting and is pretty much what I was thinking. I can't say I've seen a searchlight mech with the mech removed, though, for fixed aspect signal. I assume it was used a short distance away from a junction of some sort? I have figured out what I was looking for though. US&S did produce a polar relay that had minimal "neutral" contacts in conjunction with the polar portion of the relay. It's a DP-25, and I'm kinda kicking myself now, as there was one on ebay a short while back for a fairly decent price.

Jon