white 2 part SES E14 thermoplastic bulb/lamp holder 10MM thread - push-in terminals- 55MM HEIGHT 27mm width- no earth - PICTURE SHOWS 2 LAMPHOLDERS FOR REFERENCE ONLY - IDEAL FOR ANTIQUE LIGHTING RESTORATION AND REPAIR
Edison Screw Lamp holders and Bulbs History
The Edison Screw (ES) was designed by Thomas Edison and licensed in 1909 under the MAZDA trademark and displaced other socket types for general lighting in the early days of electrification in North America and Continential Europe.
As Edison screws were the only standard connector appliances other than bulbs were connected to mains electricity via the light socket!
For other interesting facts visit https://en.wikipedia.org/wiki/Edison_screw
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