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Very old lamp with sintered tungsten filament

Very old lamp with sintered tungsten filament

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Long and fragile filament characteristic this lamps

D_0295_z_Edison_1881.jpg D_0295_A_(1).jpg D_0312_Dr__JUST_WOLFRAM_220V_100W.jpg D_0268_W_W_.jpg

Light Information

Light Information

Manufacturer:Dr. Just Wolfram
Lamp
Filament/Radiator Type:sintered tungsten
Base:E27
Electrical
Wattage:100
Voltage:220

File information

File information

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Filename:D_0312_Dr__JUST_WOLFRAM_220V_100W.jpg
Album name:Trianero2012 / Incandescent lamps
Keywords:Lamps
File Size:209 KB
Date added:Aug 29, 2012
Dimensions:1507 x 2050 pixels
Displayed:241 times
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-68968
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Globe Collector
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Aug 29, 2012 at 10:51 PM Author: Globe Collector
This is a very important lamp Stan. I have never seen one of these, not in a nice clear picture like this. Do you have any Osmium Filament lamps? They are a couple of developmental stages before this.
Individual hairpins, each blob-welded to a separate lead-in. Look at those wierd looped main lead-ins. Is that some sort of strain relief?
Many of the details of this lamp are similar to the high voltage Tantalum lamp I have posted.

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

Trianero2012
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Aug 30, 2012 at 01:41 AM Author: Trianero2012
This is one of first tungsten filament type. No, probably no one lamp from collection use Osmium filament. One Ta filament lamp from my reserve I sold if I was really down. I donĀ“t have now more than 1 good piece - today I ll give a picture. Very fine lamp, in perfect condition, I am proud.
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Aug 30, 2012 at 02:10 AM Author: Globe Collector
I have a duplicate outside frosted 1906 Tantalum Filament in mint condition.

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

LegacyLighting
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Blake


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Sep 12, 2012 at 03:45 AM Author: LegacyLighting
That lamps is a masterpiece and a feat of engineering. Look at the detail and intricacy in it's manufacture.
Colin Attard
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Sep 12, 2012 at 11:50 AM Author: Colin Attard
Wow! this is the first tungsten lamp invented by Tungsram Hungary, The brand was still Wolfram. Very important light bulb indeed.
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Sep 13, 2012 at 01:47 AM Author: Globe Collector
Colin, did you know that General Electric sent "patent scouts" to Europe in 1910 to purchase Sandor and Just's patent for the sintered tungsten filament. This gave William Cooldige the "kick start" to go to work on swaged and drawn tungsten at Scenectady.
Sandor and Just worked for Tungsram for a while I think. So it is possible Tungsram was first with the Tungsten Filamant.

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

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Blake


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Sep 13, 2012 at 05:10 AM Author: LegacyLighting
Andrew & Colin, that is excellent information. Did you notice the stem is slightly offset in the base axis?
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Sep 13, 2012 at 05:49 AM Author: Globe Collector
If you look at Stan's picture Blake, see the upper line of text, I think is says ....U? ST
and below, WOLFRAM.
The upper word could be "JUST". I did not notice this until AFTER the post above. This lamp is a lamp of truely historical significance.
We will have to wait to see if Stan himself can shed any more light on this topic.
It could also say, "AUER-AUST". From Baron AUER Ritter von Welsbach, a figure who also looms large in early lamp development,

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

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Blake


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Sep 13, 2012 at 06:23 AM Author: LegacyLighting
Andrew it's really hard to see but yes I think Just Wolfram is the etch - I can't make an 'A'from the lead letter but I could be wrong. Hell of a nice globe. I have just sent you a link to a site that refers to Just Wolfram and many others.
Trianero2012
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Sep 13, 2012 at 06:23 AM Author: Trianero2012
Right word is: JUST
LegacyLighting
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Blake


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Sep 13, 2012 at 06:32 AM Author: LegacyLighting
Did I win it Stan? !!! My address is......

Seriously I just love that bulb. Andrew and I would get into a terrible biff-up if we both saw it at once in a shop.
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Sep 13, 2012 at 07:29 PM Author: Globe Collector
Biff, Boof, Whack, Pow. Nah, I wouldn't do that to you Blake, in not into violence, but if we were at an auction, someone's bank account would take a severe battering!
Stan just sent me an E-Mail with a picture of a JUST badge, it depicts a similar lamp, but in as "S" bulb.

Manufactured articles should be made to be used, not made to be sold!

Fee, Fye, Fow, Fum, A dead man's eye and a parrot's BUM!

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