semaphore signals

bjdick · Post by **bjdick** » Fri Aug 16, 2002 11:16 am

So it is "fail safe",stopping traffic.Good research John

johny · Post by **johny** » Mon Sep 02, 2002 5:44 pm

I have today purchased "Railway Signal Engineering (Mechanical) by L P Lewis, Third edition by J H Fraser dated 1932, in which the following is stated:

"It should be observed that the true function of the weight is to pull the wire back to its normal position, and NOT to put the signal to danger. Lower quadrant spectacles should always be sufficiently heavy to put the arm to danger even when loaded with snow, but unless the counterbalance is sufficiently heavy to pull back the wire, the arm will of course, remain in the CLEAR position".

John

broads2 · Post by **broads2** » Mon Sep 02, 2002 6:52 pm

learnt a few facts here
but did you know that they are still useing semaphore on kent railways
Canterbury west station
has all semaphore there

railmaster · Post by **railmaster** » Mon Sep 23, 2002 10:22 pm

I am more used to the UQ Semaphore Signals. In the US there is a 3 aspect signal combining the Home and Distance signals into one. But the UQ Home and Distance Semaphore signals are common in the US. (Not sure though since all of them has been replaced with lighted signaling.)

Goingnorth · Post by **Goingnorth** » Mon Sep 23, 2002 10:38 pm

broads2 wrote:learnt a few facts here
but did you know that they are still useing semaphore on kent railways
Canterbury west station
has all semaphore there

Oh there's loads of semaphores left:

Liskeard-St Erth on the GW main line
Most of Lincolshire off the ECML...including Linicoln
Banbury area...soon to be replaced.
Shrewsbury area
The Crewe-Newport line
Large parts of East anglia, inlcluding around March and Gt Yarmouth. Some of the cross country lines.
Parts of the Welsh valleys and west Wales
Highland Main line (Perth-Inverness)
Aberdeen line around Cupar and North Of Dundee (except Aberdeen)
Scarborough Line
Harrogate area
Patches in the North west
The Transpennie lines are partly mechanically signalled, although mostly with colour lights
Settle and Carlisle
Cumbrian coast
Newcastle-Carlisle
Oxford-Hereford
Peterborough-Nuneaton (except Leicester)
Around Worcester and Kidderminster
Nottingham-Skegness
Derby-Stoke
North Wales line

and last but not least...

Bedford-Bletchley...although soon to be replaced!

There's other patches but that's the main areas as far as I can remember.

johny · Post by **johny** » Tue Sep 24, 2002 8:40 am

Railmaster mentions the three-aspect semaphore signals as used in the the USA. Both the LSWR and GWR used them in the early part of the last century, but not as far as I know to any great extent.

John

AlanP46 · Post by **AlanP46** » Tue Sep 24, 2002 8:36 pm

On the oldham loop semaphores can be found at:

Shaw, up and down lines - however the home at the end of the rochdale bound platform is a 2 aspect MAS signal!

Rochdale - Vitrol Works Boundary, both directions. Junction at rochdale is controlled by MAS but entry to the station is not!!!

Alan