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Osram 110V 25K

Osram 110V 25K

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Osram 110V 25K Incandescent Lamp with drawn wire

20191129_162846.jpg 20191114_114436.jpg Osram 110V 25K.jpg Osram 115V 16K.jpg

Light Information

Light Information

Manufacturer:Osram
Lamp
Base:E27
Electrical
Wattage:25K
Voltage:110V
Physical/Production
Factory Location:Germany
Fabrication Date:1920s

File information

File information

Download: Download this File
Filename:Osram 110V 25K.jpg
Album name:meganie / Old Light Bulbs
Keywords:Lamps
File Size:175 KB
Date added:Aug 20, 2019
Dimensions:1848 x 2464 pixels
Displayed:75 times
Date Time:2019:08:20 14:13:05
DateTime Original:2019:08:20 14:13:05
Exposure Bias:0 EV
Exposure Time:1/33 sec
FNumber:f 1.7
Flash:No Flash
Focal length:4.2 mm
ISO:160
Make:samsung
Model:SM-G930F
Software:G930FXXS5ESF1
White Balance:0
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-163435
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Proteus
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Aug 22, 2019 at 07:07 AM Author: Proteus
"Nur für Deutschland"? - Only for Germany, why?
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Aug 22, 2019 at 07:19 AM Author: Globe Collector
I have one made by Julius Pintsch almost the same.....I love the silky feel of these externally etched squirrel cages!


Maybe something to do with Patent Rights Michael....you do occasionally see this, even on modern HID...(with Kr86 inside!)

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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meganie8
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Aug 22, 2019 at 07:43 AM Author: meganie

"Nur für Deutschland"? - Only for Germany, why?


The bulb was probably produced during World War 1 or during the hyperinflation in the Weimar Republic after World War 1.
The etching should probably prevent sales to foreign countries to get foreign currency.
Germans wouldn't have gotten any bulbs if the dealers were able to sell them much more profitable to foreign countries.


Maybe something to do with Patent Rights Michael....you do occasionally see this, even on modern HID...(with Kr86 inside!)


Do you have an example photo for me?

I'm looking for:
Osram L20W/39
Osram HTI 1500W/60/P50

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Aug 22, 2019 at 08:03 AM Author: Globe Collector
No, but there are examples here on Lighting Gallery if you use the search function. Lamps like HCI-T's

European models had Kr 85, (Wrong isotope mentioned above, sorry about that) but it is restricted in North America so export models had these little UV starters inside....a little single-wire arc tube like structure that worked due to the high electric field at the end of its single electrode...on the high dv/dt pulses of the ignitor.

I'll look and see if I can find an example and make another comment with the URL in it....

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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Aug 22, 2019 at 08:15 AM Author: Globe Collector
Here is the European Version without the "probe"... https://www.lighting-gallery.net/gallery/displayimage.php?album=search&cat=0&pos=46&pid=83687


I'm having trouble locating a North American Version.....it looks the same but with this small wire hanging off one lead in with a piece of sintered alumina material...same as the arc tube is made of...slipped over the end of this single wire and sealed to it. There are pictures posted up on this site...but it us just a matter of locating one. I have examples in my collection too, but, again....finding them?


I understand the hyperinflation in Germany after WW-I.....that was the "Allies'" fault...a huge and needless mistake in history that caused WW-II effectively...all that "Treaty of Versailles" stuff was so dammed unjust and still leaves a stain on us even today...a century later!

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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Aug 22, 2019 at 08:39 AM Author: meganie
Do you mean this? https://www.lighting-gallery.net/gallery/displayimage.php?pid=115312&fullsize=1

I'm looking for:
Osram L20W/39
Osram HTI 1500W/60/P50

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Aug 22, 2019 at 06:25 PM Author: Globe Collector
YES! You found one...well done!

Confining a lamp, or any other product to one geographical/gepoplitical location would never be for "logical" reasons, only political ones...and when were politicians ever logical? Rarely...generally that type of person who ensconce themselves in that social circle are not critical thinkers or problem solvers. Really, in that job, they are the worst person for the job possible considering the problems they are called upon to "solve"...or not!

The hyper Inflation was simply political...an artificially generated "problem" and the Kr-85 thing....ask yourself, do people react differently to Kr 85 exposure regardless of their Geopolitical situation?

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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