Westinghouse miniature power lever frame - Hainault [LT] signal box

Hainault signal box was built by London Transport and the frame was installed in 1939-40 but the re-signalling scheme postponed for duration of the Second World War. It was built to the London Transport Type design and opened in 12th May 1948 fitted with an 83 lever Westinghouse 'N' frame.

Two panels were installed on 3rd November 1997, one of which replaced to 'N' frame. The frame remained in situ in 2004 but the plan is to move it to the preserved Epping signal box. the signalbox closed 21st April 2001 when control passed to Wood Lane control room. The frame was removed in May 2005 and moved to Epping.

The Westinghouse Style 'N' Power Frame is mechnically interlocked and is provided with electric backlocks for signalling and front and back locking for points. The frame was formed of 4 x 12 way section and 1 x 8 way section which making a total of 83 levers, {7x12}-1 = 83 levers, as the last “lever” space is unavailable.

Diagrams
Attached a railway and signaling track diagram from London Transport Central Line Extention 1946 - 1957. This diagram can be downloaded opened in your browser in Adobe PDF format provided the Adobe browser is loaded, otherwise you will be able to save the file to your computer until such time as you have an Adobe Reader installed to read the file - Adobe reader is available free, just use the Adobe Reader icon below to get your copy.

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Adjacent boxes
Grange Hill
Newberry Park