Author Topic: Hospital 3 way bulbs?  (Read 2413 times)
Cole D.
Member
*****
Offline

View Posts
View Gallery

123 V 60 CPS


Dk944Mr-jX4jbnoUUj7xAw
Hospital 3 way bulbs? « on: June 03, 2023, 10:32:45 PM » Author: Cole D.
Looking on eBay today, I came across some listing for vintage
3 way “Hospital bulbs”. They are mogul base, but unlike the 100-200-300 wattage ones I’m familiar with in Torchiere lamps, these are 150-250-400 watts.

I’m assuming maybe these were used for lights in ORs? I haven’t seen any mogul sockets for these either, the ones I’ve seen in most mogul 3 way lamps are rated at 300 W maximum.

I did a quick search on here but didn’t notice anything about these bulbs.
Logged

Collect vintage incandescent and fluorescent fixtures. Also like HID lighting and streetlights.

James
Member
*****
Offline

Gender: Male
View Posts
View Gallery


WWW
Re: Hospital 3 way bulbs? « Reply #1 on: June 04, 2023, 09:04:36 AM » Author: James
OR lamps are one of the few applications where 3-Way lamps were also widely used in Europe.  Usually one of the filaments was rated 12V or 24V, intended for battery operation in case of a mains power failure.
Logged
Cole D.
Member
*****
Offline

View Posts
View Gallery

123 V 60 CPS


Dk944Mr-jX4jbnoUUj7xAw
Re: Hospital 3 way bulbs? « Reply #2 on: June 04, 2023, 09:34:30 AM » Author: Cole D.
Interesting! The Hospital bulbs here in the US I’m seeing are 120V AC only.

So I take it 3 way bulbs are mainly an American thing?

I’ve heard the mogul based 3 way 100-200-300 were not something that exists in the UK.
Logged

Collect vintage incandescent and fluorescent fixtures. Also like HID lighting and streetlights.

Alex
Member
***
Offline

Gender: Male
View Posts
View Gallery

feel free to ask questions


Re: Hospital 3 way bulbs? « Reply #3 on: June 06, 2023, 08:27:24 AM » Author: Alex
OR lamps are one of the few applications where 3-Way lamps were also widely used in Europe.  Usually one of the filaments was rated 12V or 24V, intended for battery operation in case of a mains power failure.

hello

I have one of these bulbs made by Narva, however the base is slightly different to the normal three mogul base E39d). Apart from being 40mm long the center contact is not flush bot extruded. Im not sure of that sockets designation however maybe EF40-d?

Best regards,

Alex
Logged

Glück auf ⚒️

Rommie
Guest
Re: Hospital 3 way bulbs? « Reply #4 on: June 06, 2023, 08:49:41 AM » Author: Rommie
3-way lamps are/were very rare in the UK. Philips tried to introduce them in the 60's and early 70's but they never really took off, more's the pity, I rather liked them  :-\
Logged
James
Member
*****
Offline

Gender: Male
View Posts
View Gallery


WWW
Re: Hospital 3 way bulbs? « Reply #5 on: June 06, 2023, 06:17:33 PM » Author: James
Indeed Alex, I have a couple of Philips Hospital double filament lamps for 230V / 24V supply and those also have the protruding pin cap.  I believe that was intended to allow the lamp to be screwed slightly in or out of its lampholder, adjusting the filament height in the reflector to optimise beam focussing.
Logged
wide-lite 1000
Member
*****
Offline

Gender: Male
View Posts
View Gallery


Re: Hospital 3 way bulbs? « Reply #6 on: June 14, 2023, 11:26:54 PM » Author: wide-lite 1000
 @ Cole D : I have one : https://www.lighting-gallery.net/gallery/displayimage.php?album=5206&pos=11&pid=225286
Logged

Collector,Hoarder,Pack-rat! Clear mercury Rules!!

Cole D.
Member
*****
Offline

View Posts
View Gallery

123 V 60 CPS


Dk944Mr-jX4jbnoUUj7xAw
Re: Hospital 3 way bulbs? « Reply #7 on: June 17, 2023, 10:17:42 PM » Author: Cole D.
Nice!  :inc:
Logged

Collect vintage incandescent and fluorescent fixtures. Also like HID lighting and streetlights.

Print 
© 2005-2024 Lighting-Gallery.net | SMF 2.0.19 | SMF © 2021, Simple Machines | Terms and Policies