Westinghouse miniature power lever frame

Debden signal box was opened by London Transport in 1949. It was built to the London Transport Type design and was fitted with a 59 Westinghouse 'N2M' frame (frame number 215). Only 35 levers were used and the remainder were never installed, and the box was closed on 29/07/1996.

The 'N2M' Style lever frame

picture here if and when one becomes availiable.

The Westinghouse Style 'N2M' 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 3 x 12 way section which making a total of 36 levers, {3x12}-1 = 35 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.

Please be aware that these files are large and can take a while to download depending on
your internet providers line speed. typically file sizes between 300-500K each

You will need a PDF viewer to read PDF file, if you don't have it its free to download

Adjacent boxes
details to follow.