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Recent Posts

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I saw the check on ebay just after the listing ended. I am happy to assist with any information you would like and have studied this era of Edison's work for much of my life.

The bulb was made between there latter part of 1881 and early 1883. This was the first Edison lamp base to have the center contact and outer thread shell in the form that has sustained to this day. In the later part of 1883 the plaster upper ring was eliminated. The filament is of the 8 candlepower "B size" and is carbonized bamboo. The filament is attached with copper plated clamps, as was Edison's technique until around 1886.

If you have any interest in trading or selling any of these items I would pay very generously for them.

  Chad
2
Bueller? Anyone?
3
Antique Bulb Discussion / Edison related items aquired from an Edison Lamp workers Family
« Last post by maize on November 14, 2017, 12:38:42 pm »
I recently aquired a few Edison lamp related items from a person whose Great Grandfather worked at the Edison Lamp Company.

I have a bulb, a check , an insert from a newspaper, and origianl photos of Edison lamp works factory.

I attachd images. I am hoping to gain some insight as to what the bulb is? and its age, rarity...any info would be helpful. I ahve more photos but there is a limit as to what I can post.

Thank you!

5
Antique Bulb Discussion / antique stearn leuconium light bulb
« Last post by rom1 on November 13, 2017, 05:42:49 pm »
antique stearn leuconium light bulb english made 100v 20w  Hello everyone , I am new member  to the forum and I live in France ,
I started a collection of old bulb since 1 year !
 I found this bulb there is very little time and I do not know much about the brand and the type of filament

   http://www.casimages.com/i/171113112730335507.jpg.html              http://www.casimages.com/i/171113112814728852.jpg.html                         http://www.casimages.com/i/171113112843403095.jpg.html                    http://www.casimages.com/i/171113112912940819.jpg.html
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General Discussion / Re: shipping old light bulbs in the mail
« Last post by Tim on November 12, 2017, 10:12:47 am »
There's always a risk in shipping antique light bulbs, but to help reduce those risks, I wrote a short article several years ago describing the shipping method I use: How to package and ship antique light bulbs
7
General Discussion / shipping old light bulbs in the mail
« Last post by Kent46 on November 11, 2017, 06:43:59 pm »
Is there a way to ship old bulbs in the mail without risking having the filament breaking in shipment?   Thank you!
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Antique Bulb Discussion / Re: Need help with this OSRAM light bulb...
« Last post by adam2 on November 10, 2017, 12:59:54 pm »
That type of lamp, rather than just the example that you have, is often known as a "cage filament navigation" lamp or bulb.

Value is rather unknown, if you have a number of them, try putting one on fleabay and see what happens ?
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Antique Bulb Discussion / Re: Need help with this OSRAM light bulb...
« Last post by Faneco on November 09, 2017, 06:22:46 pm »
Hello again
Thank you so much for the help, Chris and Adam.
Any ideia on the specific name of the bulb? Or usage category?
Any ideia of their value? I have found like a big lot of them...
Thank you again.
10
Antique Bulb Discussion / Re: Need help with this OSRAM light bulb...
« Last post by adam2 on November 09, 2017, 08:08:43 am »
Yes, probably intended for a ships navigation light.
The old style cage filament is not only vibration resistant, but also gives a consistent light output in all horizontal directions.
The large area of the filament would also give good results in an optical system designed for an oil flame.

Some navigation light bulbs have two filaments, or a tapping part way along the filament, and therefore need more than two connections.
This lamp would however seem to be a single filament type, from the data on the packaging.

I would expect something like "80 watt + 80 watt" or "80/80watt" on a twin filament lamp.

Navigation light bulbs are often of odd voltages and are worked from a standard supply voltage by means of a dropper resistance. A small pilot lamp placed on the bridge is connected across the dropper, and by lighting confirms correct operation of the navigation light.
This bulb was probably intended for a 220 volt or 230 volt circuit, with 5 volts or 15 volts across the dropper resistance.
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