THE SIGNAL BOX

SIGNALS

BRITISH RAILWAY SIGNALS

Great Northern Railway Signals

Somersault Distant signal

The Great Northern standardised on "somersault" signals after the Abbots Ripton accident of 1876. This accident was caused by the weight of ice on the signal arm preventing it returning to the danger position. Somersault arms, invented by McKenzie & Holland (one of the GN's contractors) avoided this problem as the arm pivoted centrally, separately from the spectacle.

The use of concrete for signal posts was popular with the Great Northern Railway in their later years, in the never-ending search for a cheap alternative to the use of timber.

More information about can be found in the Photo Gallery.

More details and a view of the entire signal will be found in the Photo Gallery Page covering Blotoft Siding.

Blotoft Siding Up Distant signal