[h=3]Birth of the Company[edit source | editbeta][/h]The Thorn brand started life as the Electric Lamp Service Company Limited, established by Sir Jules Thorn on 29 March 1928, importing incandescent filament lamps and radio valves from the continent. Faced with increased import duties,[SUP][3][/SUP] introduced to aid British manufacturing, Jules Thorn bought his first lighting factory, the Atlas Lamp Works Ltd in Edmonton, north London in 1932. In 1936 the company went public as Thorn Electrical Industries.[/QUOTE]
Found the above looking for an Atlas lamp.... the design looks similar to early projector bulbs...
found this old bulb at my great aunts house
It says Atlas 230/250v 50w
This is it - not particularly bright. What the hell is it for?