DM.70: Difference between revisions

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Latterly the signal was converted back to an automatic.
Latterly the signal was converted back to an automatic.
==Alterations in connection with Reversible Signalling==
From 19 June 1977 the signal was mounted on a right-hand cantilever, in readiness for the future installation of [[SN.620R]] on the same structure.
[[File: 1977-06.png|border]]
The reversible signalling was brought into use in 1981 <ref>Signalling Notice [[31/W/2770]]</ref>.


==Upgrading to 4-aspect==
==Upgrading to 4-aspect==
Line 37: Line 45:
The signal was re-fitted with a 4-aspect head at 04.50 on Monday 28 January 2002, although the top yellow was not brought into use.
The signal was re-fitted with a 4-aspect head at 04.50 on Monday 28 January 2002, although the top yellow was not brought into use.


[[File:WON-2002-02.png]]
[[File:WON-2002-02.png | border]]
 
----
 
The top yellow aspect was planned to be brought into use on 7 February 2000, as described in [[GWS.15]], but, due to 'construction difficulties' the work did not take place.
 
[[File:WON-2000-03.png | border]]
 
The top yellow was then planned to be brought into use on 11 February 2002.
 
[[File:WON-2002-06.png | border]]
 
and
 
[[File:WON-2002-03.png | border]]
 
but wasn't until 18 February 2002....
 
[[File:WON-2002-04.png | border]]
 


==References==
==References==


<references />
<references />

Latest revision as of 13:02, 15 November 2014

Link back to Control Functions.

Origin

DM.70 was a 3-aspect, semi-automatic signal commissioned at Swindon MAS Stage 1 on 14 November 1966[1]. At that stage it was supervised by Uffington SB.

It was the protecting signal for Ashbury Level Crossing and Ground Frame on the Down Main.

Controlled passed to Swindon Panel under Swindon MAS Stage 5 on 3rd March 1968.

Previous Signal Line Line Next Signal
DM.69 Down Main Down Main DM.72

Conversion to Controlled

This signal was planned to be converted to a controlled signal (SN.18) (from a semi-automatic) on 2 August 1970:

SN Won AKOverton-1.jpg

But the work did not take place as planned:

SN Won AKOverton-2.jpg

and the signal was actually converted to SN.18 on 6 September of that year.

Conversion to Automatic

Latterly the signal was converted back to an automatic.

Alterations in connection with Reversible Signalling

From 19 June 1977 the signal was mounted on a right-hand cantilever, in readiness for the future installation of SN.620R on the same structure.

1977-06.png

The reversible signalling was brought into use in 1981 [2].

Upgrading to 4-aspect

The signal was re-fitted with a 4-aspect head at 04.50 on Monday 28 January 2002, although the top yellow was not brought into use.

WON-2002-02.png


The top yellow aspect was planned to be brought into use on 7 February 2000, as described in GWS.15, but, due to 'construction difficulties' the work did not take place.

WON-2000-03.png

The top yellow was then planned to be brought into use on 11 February 2002.

WON-2002-06.png

and

WON-2002-03.png

but wasn't until 18 February 2002....

WON-2002-04.png


References

  1. Signalling Notice S.2498
  2. Signalling Notice 31/W/2770