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Wotan (German Osram) quartz halogen lamp.

Wotan (German Osram) quartz halogen lamp.

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Several years old, cannot find a listing in my Osram catalog date 1970. Wotan name goes back to the very early lamps and was used by Siemens lamps made here, later they were tied up with Siemens Brothers London. Sometimes the Neron name was used on German lamps sold here, reason was that the English Osram had nothing to do with the German firm at that time.

_1280799.JPG _1280802.JPG _1280581.JPG _1280523.JPG

Light Information

Light Information

Manufacturer:Wotan
Model Reference:Halo Star 64 482
Lamp
Lamp Type:QI
Filament/Radiator Type:Zig zag maybe coil coil
Base:Medium
Shape/Finish:Tubular
Electrical
Wattage:250w
Voltage:240-250v
Physical/Production
Dimensions:4x1 inch
Factory Location:Germany
Fabrication Date:? code is IT7
Application/Use:General lighting

File information

File information

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Filename:_1280581.JPG
Album name:migette1 / Migette1
Keywords:Lamps
File Size:122 KB
Date added:Jan 31, 2014
Dimensions:2050 x 729 pixels
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rjluna2
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Robert


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Jan 31, 2014 at 09:39 PM Author: rjluna2
That is interesting, Peter.

High power incandescent light bulb with similar to T10 with shorter length of our E26 tublar bulbs sold in our market.

Pretty, please no more Chinese failure.

monkeyface
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Jan 31, 2014 at 11:46 PM Author: monkeyface
This datecode confueses me a little! I or better i stands for halogen lamp factory in Eichstatt. It could be made in 1986.
sailormoon_01_uk
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Feb 01, 2014 at 01:07 AM Author: sailormoon_01_uk
Yep made in 1986 at the Eichstatt Factory in Germany. the letter t is to indicate the first 6 months of manufacture (January to June) where the Capital T would indicate July to December, The 7 I am guessing is the weekly code but may be wrong but if correct the 7 = 7th week or mid February thus would make the lamp being made in February 1986
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Lee


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Feb 01, 2014 at 01:18 AM Author: TL8W
Yes it's an odd one with these tungsten lamps. On fluorescents of the era a simple 1-6 was used for the months with the letter changing case at month 7 ie t1>>Jan 86; t2>>Feb 86; t6>>Jun 86 then case changes so T1>>Jul 86.......T6>>Dec 86. A "7" does not fit in that formula, but having seen a large number of tungsten lamps from the era, there was only one digit used which does not support a weekly theory. I haven't ruled out the possibility that some lines were dated quarterly using the digits 7, 8, 9 and 0 for quarters 1, 2, 3 and 4. Having seen a capital letter (and only a capital) against digits 9 and 0, t7, being a lower case letter could have been used for the 1st quarter of 1986, this would make Colin's calculation broadly correct, albeit via a different route. If anyone spots a tungsten lamp with two letters followed by an "8" which I have not seen, I would be grateful to know. If the letter is lowercase, I would believe I've cracked it!

We do not have to agree on anything to be kind to one another. The ability to be civil is available to everyone on earth, for free.

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Jan 31, 2014 at 08:40 PM Author: Globe Collector
Oh, yes, the "Halo Star" series!
There are quite a few different variants of these of which this is the earliest and rarest.
They were made in 150 and 250w and in clear and frosted.

The earliest models had a completely sealed outer bulb and they are rare. They are distinguished by a hemispherical crown and no ceramic spacing ring between the bulb and base.

Later models had an "open" outer bulb, the inner capsule was held in a ceramic jig which had the base and the outer bulb was simply glued into a trough in the ceramic jig. These had hemispherical crowns too...I think.
The later models had the ceramic jig too but the crown was somewhat flattened into a spherical surface with the centre of the radius of curvature somewhere down near the base.

Our main General Post Office here in Hobart used heaps of these in three, five ball electroliers in the main hall. They were bright but failed so often they were always up there changing them. Eventually they had "had the pip" with them and put much dimmer CFLi's up there and the rate of changing dropped dramatically.

I just looked in my 2006 catalogue, only the most recent sort were listed, in more power ratings than I had expected...


60w Clear 64472 820 lm
75w Clear 64474 1100 lm
100w Clear 64476 1500 lm
150w Clear 64478 2500 lm
250w clear 64480 4350 lm

60w Pearl 64472 IM 790 lm
75w Pearl 64474 IM 1050 lm
100w Pearl 64476 IM 1470 lm
150w Pearl 64478 IM 2400 lm
250w Pearl 64480 IM 4210 lm

All other things are the same, bulb dimensions, cap type etc.

Note these later models have different numbers, Peter's example is 64482, but its "modern" equivalent is 64480 IM.

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!

migette1
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Feb 04, 2014 at 02:44 AM Author: migette1
Wow so much info, never realised just how much interest this has generated, thanks also to Andrew for that info on Philips (Lampman) on his squirrel cage lamp re gettering techniques.

Interested in the history of electric lighting and incandescent in particular and neon glow lamps.

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Feb 04, 2014 at 03:50 AM Author: Globe Collector
Lite-Lover has just put up a 64480 IM....

http://www.lighting-gallery.net/gallery/displayimage.php?pos=-90303


...actually it is a really rare 120v North American Realm 64490!

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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Feb 04, 2014 at 05:04 AM Author: migette1
Amazing!!!! nice to see the modern equivalent.

Interested in the history of electric lighting and incandescent in particular and neon glow lamps.

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Feb 04, 2014 at 06:23 AM Author: Globe Collector
Yeah, not sure if they still make these now Peter. Somewhere I have a catalogue which lists the whole extended Halo Star family. There are/were low voltage, dichroic and metal reflector versions but with LEDs so good these days, I doubt they will still be able to shift any old stocks of these.
Now is the time for us collectors to pester electrical wholesalers to give us some of their old stock they will just probably ditch at the end of the financial year and write off against tax anyhow.
We need to lobby our Governments to make it known that a legitimate way for a business to "dispose" of obsolete stock and still claim it against tax is to DONATE IT TO A COLLECTOR!!!!

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!

migette1
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Feb 04, 2014 at 06:56 AM Author: migette1
You are right there is a couple of sellers in the London area one is Silvers on the Commercial St the other is near Hackney but do not know that one, another member may know of this place.

Interested in the history of electric lighting and incandescent in particular and neon glow lamps.

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Feb 28, 2014 at 02:45 AM Author: Globe Collector
Here's my hemi-jacketed model, only four and a half years younger.

http://www.lighting-gallery.net/gallery/displayimage.php?album=229&pos=3&pid=91289

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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