Circa 1905 Green Shelby Carbon Lamp
Corning Lab Mazda Prototype
Thislamp is a true prototype for the Edison Coiled Tungsten Mazda. This lamp was made in the Corning labs around 1912 working with GE and Dr. Irving Langmuir. Dr. Langmuir worked on the Coiled Tungsten lamp for several years, this lamp bieng an early experemental prototype. He was finaly granted pattent #1,180,159 in April 1916 when GE started production of the Coiled Tungsten Mazda. Notice the glass ball mounted to the stem press that is used to hold the filament supports. This is not your common Mazda
Westinghouse Tantalum Lamp
The Tantalum lamp was produced from about 1907 to about 1913. they were superceeded in 1908 by the mazda and didnt sell very well. this New Old Stock example is in perfect condition and still has the original sleeve.
1905 Edison Twin Hairpin Gem Lamp
In 1905 Ge introduced the gem filament metalized lamp. The first version of this lamp had two filaments mounted in series compared to the later version made of one continiouse double loop filament. This example is etched "property of the N.Y. Edison Co. Not To Be Sold". This was atempt to reduce stealing of bulbs.
Miller Incandescent Lamp
The Miller Incandescent lamp,introduced in 1903, was intended to be "refilled" when the filament broke. This example has a broken filament but hasn't been opened.
Bryan Marsh Imperial Lamp
Here is another version of the early two hairpin gem lamp. This version was made by Imperial, a Brian Marsh company. It can be identifies as that by the unique way of attaching the series filaments
1907 Sintered Mazda
The mazda was introduced in 1907 and the first version lasted only a few months. The Sintered Tungsten was very fragile and broke quite easily. Instead of the filament bieng of one piece it was made up of several hairpin segments. This example has a nickle plated base and came from the collection of The U.S. Bureau of Standards.
