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General => General Discussion => Topic started by: wide-lite 1000 on April 19, 2020, 01:13:49 PM

Title: Left-Hand Thread Medium (E-26) Base Lamp ?
Post by: wide-lite 1000 on April 19, 2020, 01:13:49 PM

My old (1980 + 1984) GE & Sylvania catalogs both list a 100w 120v A-19 inside frost incandescent lamp with a Left-Hand Thread Medium (E-26)  base  ??? :poof:  What would this have been used for and has anyone ever seen one . GE is code 100A/LHT and Sylvania is code 100A/4.  Sylvania also listed this base as available in 25- 150 watt .

ANY IDEAS ??? ???

Title: Re: Left-Hand Thread Medium (E-26) Base Lamp ?
Post by: Bottled lightning on April 19, 2020, 01:37:54 PM

I think it was to keep people from stealing the bulbs, here’s some for sale   https://www.ebay.com/itm/VTG-lot-of-3-Marbled-Bakelite-Left-Thread-Light-Sockets-Factory-Industial-Lamp-/124130844586

Title: Re: Left-Hand Thread Medium (E-26) Base Lamp ?
Post by: wide-lite 1000 on April 19, 2020, 01:42:02 PM

Makes sense !

Title: Re: Left-Hand Thread Medium (E-26) Base Lamp ?
Post by: Lumex120 on April 19, 2020, 01:55:53 PM

I have heard that these are sometimes used in hotels to keep people from stealing the bulbs, which apparently is an issue.

Title: Re: Left-Hand Thread Medium (E-26) Base Lamp ?
Post by: sox35 on April 19, 2020, 02:42:36 PM

LH thread lamps were apparently used in situations where people might steal the bulbs, such as trains, etc. I'd love to get some, I've seen them but where do you get the lampholders..?

Title: Re: Left-Hand Thread Medium (E-26) Base Lamp ?
Post by: Mr. Orthosilicate on April 19, 2020, 04:08:58 PM

I think they also used left handed bulbs for temporary lighting in some situations. I’ve found the catalog number for one type of left hand socket: Leviton calls their’s 157-x, and it looks like a temporary lighting socket.

Title: Re: Left-Hand Thread Medium (E-26) Base Lamp ?
Post by: Meme Pods on June 10, 2020, 09:01:49 PM

They also have them on amazon