Electrically operated semaphore

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Greg Hart
Posts: 92
Joined: 06 Dec 2009, 16:55

Electrically operated semaphore

Post by Greg Hart »

Here is a picture I took this evening approaching Northdene , Its the only electrically operated semaphore Ive seen.

Where else in SA do they have these type??

G
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northdene1.jpg
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Dylan Knott
Posts: 872
Joined: 17 Aug 2007, 19:44
Location: Cape Town

Re: Electrically operated semaphore

Post by Dylan Knott »

not down here, I don't think so.
Kevin Wilson-Smith

Re: Electrically operated semaphore

Post by Kevin Wilson-Smith »

Interesting!
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Greg Hart
Posts: 92
Joined: 06 Dec 2009, 16:55

Re: Electrically operated semaphore

Post by Greg Hart »

I was meaning to put it up ages ago, I actually put it up for the "Twilight" effect since we don't know how long semaphores will be around :(
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Christopher King
Posts: 32
Joined: 24 Jun 2010, 08:11
Location: Glenroy Australia (near Melbourne)

Re: Electrically operated semaphore

Post by Christopher King »

Hi
When I was involved with the lengthening of Muldersvlei up platfporm and loop the Home (Junction) signals and the outer home and distant where electrically controlled by the signabox levers. They were still repeted by the 2 volt repeaters in the signal box. Release or disengagemnt of the signals was done by track circuit also dsplaying on the box diagram 1962 (I think)

Chris
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Greg Hart
Posts: 92
Joined: 06 Dec 2009, 16:55

Re: Electrically operated semaphore

Post by Greg Hart »

Thanks Chris

Do you perhaps have a picture of the old diagram from there??

Northdene is the same with a track circuit.

CHeers
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Ashley Peter
Posts: 34
Joined: 12 Dec 2007, 18:17

Re: Electrically operated semaphore

Post by Ashley Peter »

I seem to recall seeing electrically operated semaphores at Noupoort many years ago. Also have a recollection that wire-operated signals become problematic after 2 200ft (670m), or was that the distance after which signals had to be operated by double-wire?? Any signal construction experts out there?
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