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« Last post by nkrames on July 06, 2020, 11:22:04 am »
Update/Edit - I believe it to be a late 20s/early 30s GE Mazda tungsten 10Kw similar to that referenced on this very site Characteristics of Ten & Fifty Kilowatt Incandescent Lamps by D.K. Wright & W.E. Forsythe Lamp Developmental Laboratory, General Electric Company http://www.bulbcollector.com/article010.html There is an image of a 50kw iteration which appears identical in terms of filament structure, metal base with vertical slits and lack of tip. Only real difference I see is that of a shorter glass neck, which I'm assuming to be simply related to the difference in scale of the 10kw and 50kw .
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« Last post by nkrames on July 05, 2020, 09:24:53 pm »
Hello all - thank you in advance for your time. https://imgur.com/a/9nmgQWO Photos of the bulb at this link Any and all info helpful - can't locate much. No maker mark - Manufacturer, time period, use of this (I'm assuming movie set spot-lighting or some sort of general search/spot-light), etc. Metal base with a thick knit cloth between the glass and the metal, assuming to be an insulator. Assuming tungsten crystals/powder in the base? Lighting material appears "in tact" however a hairline crack along the upper portion. Acquired from someone who said they believe it to be 30s/40s - only markings are inside on the bottom of the glass, of MP 70, 10 KW and below that a seemingly 175 (maybe not 175, but instead R5?) with an nondescript symbol/letter after.
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« Last post by dave willis on June 23, 2020, 04:21:42 pm »
Hi James,
I used to work, for many years, at a lamp-factory here in Bury St. Edmunds, Suffolk, (VCH, AKA CML Innovative Technologies) In the late 1980s, after mimiature lamp production ceased at Team Valley, VCH purchased a quantity of equipment from there, which i used to run,here at Bury.
In another post, you mentioned that you may have some pictures from Osram, Team Valley. I would be very interested to see anything you might have!
We purchased 4 or 5 miniature Badalex sealex/cappers, various mount-mills and other bits & bobs for spare parts. Sadly, lamp production ceased here in about 2008.
Kind regards,
Dave Willis
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« Last post by arno-fmp on June 17, 2020, 04:51:30 am »
Hi Adam,
thanks so much for your replay and your thoughts.
You are definately right: I am pretty sure this lamp was used either in 35mm film projection or as part of a lighting setup for film production.
Therefore I am not so sure about the marine connection although the anchor would suggest it.
Well, maybe someone else will be able to help. Otherwise the manufacturer will remain a mystery for the time being.
Thanks!
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« Last post by nealc on June 15, 2020, 04:32:52 pm »
Hi I have a bulb from an outdoor floodlight that needs to be replaced. If possible, with an LED and/or a buglight. So I measured it and it's about 3.1" so I'm thinking this is a 78mm.. I see lots of 78mm, but I'm wondering how finely these are measured, for example is there a difference between 3" and 3.1" and 3.2" or are these all just 78mm?
Thanks!
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« Last post by adam2 on June 15, 2020, 03:50:49 pm »
Don't know whom made it, but the design of the lamp with a very compact filament suggests a projector lamp, or a searchlight lamp.
The Logo marked on the glass suggests a marine connection.
Possibly for a ships searchlight.
Looks the sort of lamp that was made to the same basic design for decades, probably from the last war until recently.
Both searchlights and projectors are often expensive and therefore remain in service for a great many years, therefore replacement lamps are manufactured to the same basic design for decades.
A screw base is not ideal for this sort of lamp because when the lamp is screwed in to make a good electrical contact, it might not be correctly aligned with optical system.
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« Last post by arno-fmp on June 10, 2020, 08:46:57 am »
Hi everybody,
I just signed up to this forum to seek help in identifying the manufacturer of a light bulb. I am not sure if this is the correct subforum, please move the topic if necessary.
I am currently working on gathering information on a large array of light bulbs from our collection and preparing them for inclusion in our new database.
This specific bulb seems to be coming from a french manufacturer but I am not certain of it. I could find no further information anywhere on the web. It is also the only bulb from this manufacturer that I have come accross so far.
Any help would be appreciated.
Thanks very much
Arno
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« Last post by damnjohnny on May 10, 2020, 04:49:20 pm »
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« Last post by Tim on April 05, 2020, 11:22:33 am »
These carbon filament lamps haven't been produced in at least a hundred years and I wouldn't expect them to be easy to find, and I doubt that there's any modern bulb on the market today that would look authentic. I have a few in my collection that look similar, but none look exactly alike. Finding a matching set of NOS will be even harder. Hopefully someone reading this will prove us wrong.
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« Last post by stirlingfan on April 05, 2020, 10:59:37 am »
It's a 1905-07 model machine shop sold by a German toy co. Apparently no one has these bulbs.
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