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Post Info TOPIC: Order Boards pointed up and upside down


The Forum Celestial Advisor

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Order Boards pointed up and upside down
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The GN/BN used the semaphore signals with straight

up meaning green. The UP on the ex-Spokane

International used the upside down semaphore

which I have nevered figured out. How could a

standardization of either "up or down" go on

so long. Thankfully the tri-color street light came

to the rescue at just about every depot in America

that was still cranking out train-orders or track

warrents.



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Upgraded Condition?

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Upper quadrant and lower quadrant semaphore signals have similar indications. The highest an upper quad signal blade can raise is to the vertical position almost universally known as clear. The middle position or angle of approx 45 degrees was approach, and the lowest position resulted in a horizontal position of the blade which meant stop.

a lower quad set up, the highest a blade could go was horizontal or stop.

the middle was a 45 degree angle or approach.

the lowest was a vertical blade which meant clear.

the upper quadrant signals prevailed over the lower quadrant signals because under a lack of power the blade would fall to its most restrictive indication ....stop. If snow built up on the blade and its weight forced the blade down, the upper quad signal would show stop. All better than a lower quad which could fail in the clear position, something that was highly frowned upon.

in my limited experience lower quad signals were usually on order boards at manned operator locations. They were usually hand operated.



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The Forum Celestial Advisor

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Someone gave me this book "The History of Railways in Great
Britain" and in it is a story about a train crash caused by a
semaphore signal that "froze in position" due to freezing rain.
A couple of back to back passenger trains running and the
first train got delayed a bit a station which would cause a red
block for the following train except the signal was frozen to
the green/clear position. You have to figure this has happened
before in USA railroad history as well.

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Professional Asshole

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Krinker, I haven't been around long enough to have ran on semaphores but we had to learn them when I hired out. For what reason, I'm not sure.

In 2005, the removed all the old semaphores on the Hinckley and Brainerd Subdivisions and scrapped them. They left one at the Central Ave Junction entering the Lakes Subdivision from the former NP mainline. (Now used as a running track to Midwest Energy Coal Plant).

I should pay more attention because I think they might of cut that one down as well.

Here is a good story as well as some cool old pictures of the Central Avenue Junction

http://zenithcity.com/james-j-hill-takes-northern-pacific/



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The Forum Celestial Advisor

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I love history lessons.

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