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Post by Harsig on May 14, 2008 14:05:27 GMT
I'm currently working on a set of diagrams which will show the various stages of the four tracking scheme. And here they are |
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mrfs42
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Big Hair Day
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Post by mrfs42 on May 14, 2008 16:20:14 GMT
Ace! Thank you Harsig...... (scurries off upstairs to use A3 printer at work) ;D
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metman
Global Moderator
5056 05/12/1961-23/04/2012 RIP
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Post by metman on May 14, 2008 16:51:10 GMT
You legend! I think you missed a crossover at Harrow tho-the one from platform 3 to Uxbridge?
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Post by Harsig on May 14, 2008 17:43:43 GMT
You legend! I think you missed a crossover at Harrow tho-the one from platform 3 to Uxbridge? No I didn't. The crossover you are referring to did not appear until long after the date of these diagrams. |
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metman
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5056 05/12/1961-23/04/2012 RIP
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Post by metman on May 14, 2008 17:52:27 GMT
Really? I wasn't sure you see. I guess trains on the fast line that wished to go to Uxbridge crossed onto platform 1. When that spur was removed the said crossover must have been installed?
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Post by Harsig on May 14, 2008 18:09:21 GMT
When that spur was removed the said crossover must have been installed? More or less, although I believe there may have been a few months when neither was available. |
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mrfs42
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Big Hair Day
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Post by mrfs42 on May 14, 2008 18:22:08 GMT
I guess the Z numbers at Northwood are locks of some form for the Yard points, the relief signalmans sketch I've got from the '40s doesn't have them, E3 is slotted (by I guess Ground Frame 'F' [Neals Siding], where the A2 of the '60s is F2). Do you think that the Z locks were installed sometime after 1950?
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Post by Harsig on May 14, 2008 20:07:49 GMT
I guess the Z numbers at Northwood are locks of some form for the Yard points, the relief signalmans sketch I've got from the '40s doesn't have them, E3 is slotted (by I guess Ground Frame 'F' [Neals Siding], where the A2 of the '60s is F2). Do you think that the Z locks were installed sometime after 1950? Z just generally indicates a hand worked point. Sometimes they are numbered and sometimes not. Some are equipped with switch locks to lock them in the normal position although I suspect that this did not apply to any of them prior to this re-signalling of 1961/62. From something I was reading the other day I seem to recall that Ground Frame F was taken out of use in 1953. It is almost certain that signal F2 became A2 and the original A2 became JBX881. Certainly a 1925 sketch I have of the signalling between Rickmansworth & North Harrow shows E3 as slotted and the signal in the position later occupied by JBX881 numbered as S2. |
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Deleted
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Post by Deleted on Jun 10, 2008 23:12:26 GMT
Hmmm, there was a temp signal frame controlled (from Harrow?I think) for the siding. This was all ripped out in 1962! The temporary frame was a temporary box which worked the local to main junction and connections to the temporary siding. Untill a later stage of the widening. |
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