Junctionmad Posted November 3, 2015 Posted November 3, 2015 can anyone tell me what was the dial of the needle was labelled on the miniature staff instruments thanks Dave Quote
0 minister_for_hardship Posted November 3, 2015 Posted November 3, 2015 There wasn't any lettering, just a plain black background. Quote
0 Junctionmad Posted November 7, 2015 Author Posted November 7, 2015 There wasn't any lettering, just a plain black background. So what did the needles point to Quote
0 Garfield Posted November 7, 2015 Posted November 7, 2015 (edited) So what did the needles point to The needles indicate when there's a current being supplied to the instrument from the cabin at the far end of the corresponding section, allowing the signalman to remove the staff. When there's no current, the needles point 12-6, and when there is a current they move off-centre (1-7 or 11-5). (And because they're powered by the same dynamo that powers the bell signal system, the needles twitch whenever the cabins are commmunicating) Decent photo of the staff instruments in Claremorris cabin here: http://www.signalbox.org/overseas/ireland/claremorris-i.jpg Edited November 7, 2015 by Garfield Quote
0 DiveController Posted November 7, 2015 Posted November 7, 2015 I have no idea what this discussion is about. Could someone explain if this concerns cab instruments or whatever? Apologies and thanks in advance! Quote
0 Garfield Posted November 7, 2015 Posted November 7, 2015 I have no idea what this discussion is about. Could someone explain if this concerns cab instruments or whatever? Apologies and thanks in advance! It's about miniature staff instruments found in signal cabins (as in the photo link in my previous post). https://en.wikipedia.org/wiki/Token_%28railway_signalling%29 Quote
0 DiveController Posted November 7, 2015 Posted November 7, 2015 Thanks, both! (Sorry, Patrick, missed the photo on the mobile device) Quote
0 Junctionmad Posted November 8, 2015 Author Posted November 8, 2015 The needles indicate when there's a current being supplied to the instrument from the cabin at the far end of the corresponding section, allowing the signalman to remove the staff. When there's no current, the needles point 12-6, and when there is a current they move off-centre (1-7 or 11-5). (And because they're powered by the same dynamo that powers the bell signal system, the needles twitch whenever the cabins are commmunicating) Decent photo of the staff instruments in Claremorris cabin here: http://www.signalbox.org/overseas/ireland/claremorris-i.jpg Thanks for that . I had seen some in the uk , that acted like but not the same as block instruments. Quote
0 jhb171achill Posted November 8, 2015 Posted November 8, 2015 Soon, it will be possible to see, measure and photograph all this stuff close up at Downpatrick, once the GNR Bundoran Junction cabin is fully up and running. Quote
0 Junctionmad Posted November 9, 2015 Author Posted November 9, 2015 Soon, it will be possible to see, measure and photograph all this stuff close up at Downpatrick, once the GNR Bundoran Junction cabin is fully up and running. Get permission and visit Wellington bridge. It's a signal museum all present and frozen in time. Full signal cabin etc Quote
Question
Junctionmad
can anyone tell me what was the dial of the needle was labelled on the miniature staff instruments
thanks
Dave
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