Williams

Used by the LSWR from about 1915, this type of lever became very common from about 1918 onwards. Over the years many improvements were made to the mechanism, although the external appearance remained the same. They were extremely common throughout the system by the 1930s.

Ref: South Western Circular Volume 12, No.7, July 2002. Can be obtained from British Library (and any other library) under ref ISSN 0309 - 5053.