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Railroadiana Collectibles from the Railroads. Railroadiana or railwayana refers to artifacts of currently or formerly operating railways around the world.

Railroadiana

Bi-Polar Semaphore Signal Motor


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  #1  
Old 06-25-2014, 09:17:16 PM
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Default Bi-Polar Semaphore Signal Motor

From Route 4 in New Hampshire:

The Union Switch and Signal Company
Swissvale, PA
Manufacturers
Electric Motor Signal
Patented
March 27, 1897. April 24, 1897.

Looking for history and information,
-- Harry

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Old 06-25-2014, 10:32:33 PM
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Default Re: Bi-Polar Motor - The Find of the Day

Those motors were used to power railroad semaphore signals. There should be a glass cover over the brushes and commutator. Looks like a nice example.
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Old 06-25-2014, 10:37:56 PM
Ronald E. McClellan Ronald E. McClellan is offline
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Default Re: Bi-Polar Motor - The Find of the Day

Harry; These motors were used to raise and lower the crossing gates at railroad crossings. They were used in areas that had no electric company power. There would be a bank of Edison wet cells in a box in the ground to supply power. Ron
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Old 06-25-2014, 11:24:47 PM
Kimbra Dean Kimbra Dean is offline
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Default Re: Bi-Polar Motor - The Find of the Day

This link might be helpful.

rrsignalpix.com/pdf/USS_6_sec.pdf
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Old 06-27-2014, 06:08:17 AM
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Default Re: Bi-Polar Motor - The Find of the Day

Kimbra, thanks for the link. I have one of the motors and up until now I've only come across a small illustration of the motor shown inside the enclosure at the bottom of the semaphore.

Harry, nice find.

Gus
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Old 06-27-2014, 10:42:30 AM
len k len k is offline
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Default Re: Bi-Polar Motor - The Find of the Day

Funny thing is I think we have a "semaphore signal" still standing here in town on an old abandonded rail line. Think it that looks like the PFD one.
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Old 07-05-2014, 01:02:13 AM
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Default Re: Bi-Polar Motor - The Find of the Day

These motors were used in many signalling applications- semaphores, crossing gates, and there were even some used for long racks of timing sequence contacts.

Railroads used battery systems, even when utility power WAS available, to assure that if there was a power outage, that signal system service would not be compromised.
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Old 07-05-2014, 11:34:33 PM
beezerbill beezerbill is offline
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Default Re: Bi-Polar Motor - The Find of the Day

I recall seeing those motors in semaphores along an abandoned rail line that went through Keene, NH. This was back in 1974. Most were either shot up or smashed apart as if someone were collecting the bronze and copper. A few were still in pretty good shape. Lots of other interesting machinery in those semaphores!

Last edited by beezerbill; 07-05-2014 at 11:35:34 PM. Reason: addition
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