john_m wrote:Since I posted I have found some images on the internet of what appears to be LNER Standard Signal Lamps. They have "Lamp Manufacturing & Railway Supplies Company Ltd London" cast into the back. Also a patent number 196218, HS68 and LNER cast in the back too. I can't see what is cast on the lid of one. However the other has similar wording cast on the lid to that on the back but S40A instead of HS68 and no LNER.
They do appear to be different from the LMS Adlake lamps.
I wonder if anyone knows their dimensions? They seem to have a square cross section and taper at the bottom with a circular mounting? disc on the base.
Andrew Waugh wrote:The patent was easily found on espacenet...
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