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Author Topic: UNO thread for shade holders on sockets  (Read 3158 times)

Offline adam

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UNO thread for shade holders on sockets
« on: March 05, 2003, 11:40:00 am »
Hello. I'm interested in the historical evolution of lighting components. I have many old books and catalogs, but none of them have an answer to these questions: Who (and when) invented the UNO thread for shade holders on lamp sockets? What does "UNO" stand for? Is there a patent? If there is, what is the patent number? The UNO thread shows up in my 1916 GE catalog, but not yet in a 1914 Bryant Electric catalog. I don't have any 1917-20 catalogs. My post-1920 catalogs are chock-full of sockets with UNO threads, from all manufacturers. Thanks. Adam
 

[This message has been edited by adam (edited March 05, 2003).]

Offline Hemingray

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UNO thread for shade holders on sockets
« Reply #1 on: March 07, 2003, 08:14:00 pm »
I've seen some of those, mostly the threaded ones.