Templot Club Archive 2007-2020                             

topic: 627Inside switch detectors at Beverley
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posted: 16 Nov 2008 18:57

from:

Martin Wynne
 
West Of The Severn - United Kingdom

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I don't recall ever seeing something like this on a model. Switch detection gear installed in the four-foot at Beverley. Another fine picture from Mick Nicholson.

inside_detectors_1983.jpginside_detectors_1983.jpg

Martin.

posted: 17 Nov 2008 14:04

from:

Phil O
 
Plymouth - United Kingdom

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Hi

This is usually covered by a ramp to protect it from couplings etc.

Cheers Phil :)

posted: 18 Nov 2008 03:05

from:

Phil O
 
Plymouth - United Kingdom

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Hi

Further to this mornings reply I have just watched the Fastline DVD of the old British Transport film for switch and crossing maintence etc. which was filmed on the Eastern Region and there is no sign of said ramps over facing point locks so this may be a GW / Western region  form of protection possibly because of the ATC plunger on the front of the loco's.

Cheers Phil

PS. I have photo's of the ramps somewhere & when I get a bit of time I will look them out and post them. :D
Last edited on 18 Nov 2008 04:11 by Phil O
posted: 23 Nov 2008 02:47

from:

Phil O
 
Plymouth - United Kingdom

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Hi

I have found a a few pictures of the facing point lock ramp that I took at the ESR a few years ago. Unfortunately there is no detection gear etc. as it is on a ground frame but gives you the idea.

Cheers Phil. :thumb:
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posted: 23 Nov 2008 02:48

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Phil O
 
Plymouth - United Kingdom

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2nd picture
Attachment: attach_423_627_P3300054.JPG 349

posted: 23 Nov 2008 02:49

from:

Phil O
 
Plymouth - United Kingdom

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3rd picture
Attachment: attach_424_627_P3300055.JPG 337

posted: 23 Nov 2008 02:52

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Phil O
 
Plymouth - United Kingdom

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Final picture. As you can see it has got a bit battered and bashed over the years. I took them for reference for when fitting them on layouts.
Attachment: attach_425_627_P3300056.JPG 355

posted: 25 Nov 2008 13:09

from:

Martin Wynne
 
West Of The Severn - United Kingdom

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Phil O wrote:
I have found a a few pictures of the facing point lock ramp that I took at the ESR a few years ago. Unfortunately there is no detection gear etc. as it is on a ground frame but gives you the idea.
Hi Phil,

Many thanks for the pics. It's an old-pattern GWR switch with the round-section lock-in stretcher bars running in slots in the web of the stock rail. Notice the joggled stock rails. For these GWR old-pattern switches the joggle depth is 3/8" and the joggle return length in front of the tips is 4 inches. The later GWR and BR(WR) curved flexible switches have a less severe joggle -- the joggle depth is 1/4" and the joggle return length is 6 inches.

Another point of interest to note is that for pointwork the GWR used chair-screws inserted from above. The well-known GWR-style track with through-bolts inserted from below and nuts on top was used only for plain track. Fixings which can be removed and replaced from above obviously make maintenance much easier.

Mick Nicholson has sent some more notes about the original pic.

Which is not a facing-point lock of course. I don't know whether such inside detection gear would normally be fitted with a protection cover like a facing-point lock. Anyone? The FPL cover ramps tend to be a bit of a cop-out model-wise, so if you can't have one it makes this detection gear very modelable. :)

He writes:

"Inside" detection gear at Beverley Cherry Tree, the "Detectors" were also used as "Selectors", one signal worked by either No15 or 18 levers. It's more usual to have it the other way, i.e. one lever working either of two signals depending on the "Lay" of the points. The picture I sent was taken about Easter 1980 and before I moved on elsewhere. I ended up back at Cherry Tree early 1983 and by which time both running lines had been fully "Track Circuited" and all the signal wires runs etc replaced. "16 Points" then had a conventional outside detector/selector. You can just note the change in the later 1983 "Type 2" picture:

cherry_tree_crossing2_may_1983.jpgcherry_tree_crossing2_may_1983.jpg
© Mick Nicholson

Thanks Mick.

Martin.



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