Charing Cross signal box

Charing Cross signal box with its Westinghouse Brake & Signal Co. Ltd. Style 'K' Power Lever Frame was opened on 27th June 1926 by the Southern Railway. It was built to a non standard design and was fitted with a 107 lever frame. The signalbox continued in use for 50 years until its operation was take over the London Bridge signalling centre NX Panel on the 19th April 1976.

When Charing Cross opened it replaced the following. Charing Cross, a temporary mechanical box opened by the Southern Railway between 22nd and 24th August 1925, and Belvedere Road.

Waterloo Station (Eastern Section) was closed at the same time and replaced by signals controlled by Charing Cross and Metropolitan Junction signal boxes.

Charing Cross

The signalbox is seen here had 107 miniature levers which replaced the original 130 mechanical lever frame on the 27th June 1926. Picture above by kind permission of © Graham Floyd

The frame was supplied by Westinghouse Brake & Signal Co. The frame is a Style 'K' Power frame which was mechanically interlocked. There were a total of 100 levers when opened, on a frame for 107, i.e. 9 x 12 lever sections. These were for 24 points, 69 signals, 1 turntable bolt, 6 spare, i.e. 94 working when the frame was supplied and installed.

Charing Cross

The Westinghouse Brake & Signal Co. Ltd lever frame, with its indicators behind the levers, At this early date, the colours in the outdoor signals, from the bottom up, were originally Y, R, YY, G. Thus presumably so were the roundels. The present standard sequence of R, Y, G, YY came a little later. The train describers sending boxes are fitted on top of the frame box whilst the receiving train describer units are housed between the signalling diagrams. 
Picture above by kind permission of © Graham Floyd

Charing Cross

The frame is a Westinghouse Style 'K' Power Frame which was mechanically interlocked. Picture taken between 1969 & 1975. by kind permission of © Graham Floyd

Charing Cross

Picture taken between 1969 & 1975. by kind permission of © Graham Floyd

Charing Cross

Picture taken between 1969 & 1975. by kind permission of © Graham Floyd,

Charing Cross

Starter Signals on the end of the platform with the signalbox immediately behind, from a SR publicity photograph. The long shed at track level under the signal box could be the temporary 1925 box.

Additional note.
NOTE The temporary box that was replaced had around 50 signals and 20 sets of points. Given that the frames in use at the time were generally 4" pitch that is nearly a 25' long frame with under floor locking. Even if a Knee frame, which was above floor locking, was used it would be longer at around 27' long. The hut beneath the box does not look like it was capable of containing a frame that size. I could be wrong, I have been before.

Diagrams

Attached is Southern Railways signal instruction No.19 of 1926 notice and signal instruction of No.19 1926 track diagram this can be downloaded in PDF format, this covers the introduction of colored light signals between Charring Cross, Cannon Street and Brough Market Junction signal boxes. These diagram(s) are taken from the website of the Signalling Record Society Research Note37. These images are copyright of the Signalling Record Society, and reproduced by permission.

Adjacent boxes

London Bridge (Main & Local Lines ) Southbound

Metropolitan Jc signal box (1m 388yds away) was the adjacent box throughout the life of Charing Cross signal box, Metropolitan Jc was a mechanical box, opened in 1900, and converted to work power points and colour light signals in 1926. It had a full-size lever frame throughout.