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Post by angelislington on Jun 9, 2009 6:01:12 GMT
Botheration to that MRFS42, I spent ages webbing up a pamphlet for him yesterday and he's not even bothered to put a link up here - so I shall instead! ;D The Jubilee of Automatic and Power Signalling on London Transport Lines, written to commemorate the 50th anniv of Westinghouse supplying signalling kit to LT. No date, but some time in the early 1950s. Some really fascinating pics in there. Enjoy!  |
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Post by abe on Jun 9, 2009 12:57:43 GMT
Great stuff - what a fantastic leaflet! Many thanks for this. One problem though - p18 is missing. Any chance of getting this added please?
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mrfs42
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Post by mrfs42 on Jun 9, 2009 13:15:08 GMT
I've got the original image sat on my machine, and AI has it on hers too. I shall speak nicely to her when she comes home so she can tweak with the html. Sadly, I think the original is still 300 miles away.  |
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Deleted
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Post by Deleted on Jun 9, 2009 14:54:29 GMT
Which station is Mill Hill Park, seen on p11?
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Deleted
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Post by Deleted on Jun 9, 2009 15:16:22 GMT
Acton Town I believe
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Post by angelislington on Jun 9, 2009 17:21:51 GMT
Great stuff - what a fantastic leaflet! Many thanks for this. One problem though - p18 is missing. Any chance of getting this added please? Thank you. Page 18 is now up - it was in my FTP log, so I don't know what happened there, but I've re-uploaded it and it all seems hunkydory. |
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Post by railtechnician on Jun 9, 2009 20:04:22 GMT
What an excellent and informative few pages. Thanks for making that available. There is some information there which is totally new to me despite my many years at LT.
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Tom
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Post by Tom on Jun 9, 2009 20:53:18 GMT
Very nice indeed.
I note p18 shows a set of points with a different design of Ground Lock - was this the old electric ground lock which was sometimes shown on prints as WJ, as opposed to the pneumatic one which is WL?
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mrfs42
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Post by mrfs42 on Jun 9, 2009 21:21:22 GMT
I note p18 shows a set of points with a different design of Ground Lock - was this the old electric ground lock which was sometimes shown on prints as WJ, as opposed to the pneumatic one which is WL? I'd have to check through my AETish notes to be absolutely sure, but I'm about 95% confident that is indeed a WJ. I've always been puzzled as to why it is a 'J'. Watch this space. *finishes rummage* Yep, though I wonder what was rectified there? WJR couldn't be used for obvious reasons; if WLJ or WLM were used that would make a bit more sense. |
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mrfs42
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Post by mrfs42 on Jun 10, 2009 12:56:16 GMT
Thinking more about the WJ/WL scenario, I've been doing a bit of digging around my wiring diagrams.  Now, the two images enclosed are not of LT practice, but they are of (largely) Westinghouse practice; and I'll place a pretty safe bet that there were not many differences between the two. [1] Now, we have Standard Wiring Diagram No 27 and Standard Wiring Diagram No 26 , note that No 27 does indeed have a WJ: because it was off an AC hand generator. 26 does not have a WJ as such across the circuit, but the rectification is done at the BX/NX feed across the NiFe cell bank. This leads me to wonder, were the LT WJs locally rectified, rather than remotely as in SWD 26? What, then, was the rectification: 600v/100v signal main, perhaps? Interesting. ;D [1] I've been looking as US&S (American) wiring practices/circuits for trainstops recently, and the differences are largely terminological. |
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Post by tubeprune on Jun 10, 2009 20:31:04 GMT
Botheration to that MRFS42, I spent ages webbing up a pamphlet for him yesterday and he's not even bothered to put a link up here - so I shall instead! ;D The Jubilee of Automatic and Power Signalling on London Transport Lines, written to commemorate the 50th anniv of Westinghouse supplying signalling kit to LT. No date, but some time in the early 1950s. Some really fascinating pics in there. This is very interesting - thank you for taking the time to do it. I think the date is June 1955 (see M. 0655 on last page) and this would fit with first installation on the District main line + 50 years. I think the Mill Hill Park Photo was quite early. Look at the long gaps in the negative rails. I wouldn't want to stop over any of those points. I've noticed an error in the description of the photo on page 9 of Acton Town cabin. This is not the original installation but the altered 3-platform design of 1910. Page 11 refers to repeaters: Platform repeaters were introduced from 26th March 1906. Yellow arms and lights for running repeaters were introduced on 17th March 1907 as it says. Page 19 shows what look like 3-aspect signals at Baker St. They are actually 2-aspect with the bottom light as the S sign for train starting which lit when the guard touched the wires with the tip of the flag stick. |
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mrfs42
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Post by mrfs42 on Jun 10, 2009 21:37:50 GMT
I think the spirit of the caption on p9 is still correct; as it is the original 'B' style frame, albeit relocked.
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rincew1nd
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Post by rincew1nd on Jun 12, 2009 20:08:29 GMT
£1.00 9? Bargain!
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