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Post by programmes1 on May 10, 2018 5:15:55 GMT
Can anyone help and tell me when the 3 aspect signals were changed so that only 2 aspects were used, there is a photo on the web somewhere which shows the arrangement TIA. (Mods if this is in the wrong section then move only put here as layout is still in although has had alterations). Have now found photo Baker Street |
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Post by goldenarrow on May 10, 2018 21:21:12 GMT
Video footage from 1992 shows S aspect fitted signals (thanks reganorak) MB 24 and 25 still in situe although it appears that the bottom lights had by then looked redundant. At the absolute latest that generation of signals would have remained operationally untouched would be 1988 when the signal cabin closed and control passed over to Baker Street SCC. Having said that, theres some very shaky home films showing Pannier L94 in 1972 passing Baker Street and I can't make out three aspects. If that's verifiable then it would push the date back to the mid-60's. |
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Post by reganorak on May 10, 2018 21:27:38 GMT
These weren't three aspect signals per se. The bottom aspect was an illuminating 'S' for when slam door trains (Dreadnoughts and T Stock) were ready to depart. The tip of the guard's flat touched wires and illuminated an 'S'.
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tut
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Post by tut on May 10, 2018 21:43:25 GMT
These weren't three aspect signals per se. The bottom aspect was an illuminating 'S' for when slam door trains (Dreadnoughts and T Stock) were ready to depart. The tip of the guard's flat touched wires and illuminated an 'S'. Such an aperture still just about survives on OD2 at Liverpool Street westbound, I believe? |
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Post by brigham on May 11, 2018 17:37:35 GMT
'S' for 'Shut'?
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Post by goldenarrow on May 11, 2018 18:01:35 GMT
I believe the 'S' denoted start. I think use of the 'S' indication was also used on the LNER and LMS. |
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Post by countryman on May 11, 2018 19:00:58 GMT
Something similar occurs with Austrian signalling. When the train stops at the station, when the green light is given and the guard is satisfied that the train is ready to depart, he/she goes to a button and presses it, and a smaller green light flashes by the main green light to act as a starter.
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Post by zcap on May 11, 2018 20:08:01 GMT
Something similar occurs with Austrian signalling. When the train stops at the station, when the green light is given and the guard is satisfied that the train is ready to depart, he/she goes to a button and presses it, and a smaller green light flashes by the main green light to act as a starter. A bit off topic but that sounds rather unsafe! How does the driver know the guard is back on the train? Or is it platform staff that press the button for the miniature green signal (similar to the mainline CD/RA indicators?) |
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Post by DistrictSOM on May 11, 2018 21:46:23 GMT
These weren't three aspect signals per se. The bottom aspect was an illuminating 'S' for when slam door trains (Dreadnoughts and T Stock) were ready to depart. The tip of the guard's flat touched wires and illuminated an 'S'. Such an aperture still just about survives on OD2 at Liverpool Street westbound, I believe? I looked today in the site prints for Liverpool Street and Baker Street and I couldn’t find anything related to aux illuminating sign under either signal which has been mentioned |
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tut
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Post by tut on May 11, 2018 21:54:40 GMT
Such an aperture still just about survives on OD2 at Liverpool Street westbound, I believe? I looked today in the site prints for Liverpool Street and Baker Street and I couldn’t find anything related to aux illuminating sign under either signal which has been mentioned |
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Post by goldenarrow on May 11, 2018 21:56:59 GMT
@tut Beat me to it!
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Post by DistrictSOM on May 11, 2018 22:47:17 GMT
I never said it’s not there all I’m saying it’s no longer in the site prints so must be decommissioned
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tut
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Post by tut on May 11, 2018 23:12:20 GMT
I never said it’s not there all I’m saying it’s no longer in the site prints so must be decommissioned Oh no, I didn't think that is what you were saying  I just thought a picture would help.
I'm quite sure it's decommissioned Just the aperture left I reckon. |
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Post by countryman on May 12, 2018 7:45:58 GMT
Something similar occurs with Austrian signalling. When the train stops at the station, when the green light is given and the guard is satisfied that the train is ready to depart, he/she goes to a button and presses it, and a smaller green light flashes by the main green light to act as a starter. A bit off topic but that sounds rather unsafe! How does the driver know the guard is back on the train? Or is it platform staff that press the button for the miniature green signal (similar to the mainline CD/RA indicators?) It takes a few seconds for the flashing light to start. It is certainly a member of train staff, not platform staff that presses the button. |
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Post by programmes1 on May 12, 2018 8:27:25 GMT
These weren't three aspect signals per se. The bottom aspect was an illuminating 'S' for when slam door trains (Dreadnoughts and T Stock) were ready to depart. The tip of the guard's flat touched wires and illuminated an 'S'. Reg, Thanks I had forgot all about the 'S' signs, I knew that the Met had 3 aspect signals futher out did these also have the 'S' signs the other thing is thinking about it I thought that they were a separate aspect. |
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Post by programmes1 on May 12, 2018 8:28:49 GMT
tut, Now my grey cells are working a bit better if that aspect was not an 'S' would it have been an illuminated 'A'? |
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Post by johnb2 on May 12, 2018 17:50:24 GMT
These weren't three aspect signals per se. The bottom aspect was an illuminating 'S' for when slam door trains (Dreadnoughts and T Stock) were ready to depart. The tip of the guard's flat touched wires and illuminated an 'S'. Reg, Thanks I had forgot all about the 'S' signs, I knew that the Met had 3 aspect signals futher out did these also have the 'S' signs the other thing is thinking about it I thought that they were a separate aspect. This is only a recollection from many years ago when the 'T' stock was running, early sixties at latest, so getting on for sixty years ago!!! I then lived at Pinner and the signals were three aspect R/Y/G at the platform end. I do not recall any sub aspect showing 'S' or anything else for that matter. The guard would touch the brass end of his flag stick against two wires suspended above the platform, a bell would ring at the other end of the platform and the train would start. The guard was usually standing fully on the platform when he did this, he would step onto the train as it began to pull away. I often thought that any slip on the part of the guard would leave him stranded on the platform as the train trundled away!! Never saw that happen though! |
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metman
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Post by metman on May 13, 2018 0:01:48 GMT
Yes believe it was either a bell or an illuminated ‘s’ or both which was given.
Of course the whole lot ceased to be used from the early 60s with the demise of the former MET stock. I understand the bell would ring at both ends until some bright spark realised this could cause the opposite train to depart!!
I’m sure I’ve seen independent aspects (like trip cock testers or fixed red lights) in the odd location with an ‘s’ on. A similar system used to exist at Finchley Road to singal the adjacent train.
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I just thought a picture would help.
