A 1913 lecture on the history of incandescent bulbs can be found at:
http://www.bulbcollector.com/William_Hammer.html
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Salient points from the lecture are:
*"[REPRINTED FROM THE TRANSACTIONS OF THE NEW YORK
ELECTRICAL SOCIETY, NEW SERIES, 1913, No. 4.]
THE WILLIAM J. HAMMER HISTORICAL COLLECTION
OF INCANDESCENT ELECTRIC LAMPS.
By William J. Hammer
While Mr. Thomas Alva Edison is universally recognized as the father of the commercial incandescent electric lamp, it is nevertheless a fact that there were incandescent electric lamps made long before Mr. Edison’s time; yes, even before he was born.
In the year 1810 Sir Humphrey Davy, in the Royal Institution in London, with his famous battery of 2,000 cells and his pieces of willow charcoal, formed a 4-inch electric bow or “arc” and this experiment laid the foundation for all subsequent “arc” lighting systems. It is interesting to note that he was also the founder of incandescent electric lighting, as he at this early period made both platinum and carbon incandescent by means of his famous battery. After describing his experiments with the arc light, he says, “And a platinum wire 1/30 of an inch in thickness and 18 inches long, placed in circuit between the bars of copper, instantly became red hot, then white hot, and the brilliancy of the light was insupportable to the eye.”
The first English patent on the incandescent electric lamp was that of De Moleyns in 1841. He proposed to sprinkle finely divided carbon or graphite over the surface of an incandescent platinum wire.
Mr. J. W. Starr, a young man from Cincinnati, Ohio, a protege of the well known philanthropist Peabody, in 1845 took out a patent, through his English attorney, King, in whose name the patent appears, for a lamp consisting of a strip of graphite in a Torricellian vacuum. It is very interesting to note that in the year of his death 1847 (the very year, by the way, in which Mr. Edison was born) Starr had the privilege of exhibiting before the immortal Faraday a chandelier, or electrolier, of 26 of these lamps, representing the 26 states which constituted the Union at that time.
In 1858 Gardner and Blossom took out the first American patent in this field, it being for a platinum lamp to be used for a railway signal lamp. One of these lamps may be seen today in the Patent Office Museum at Washington, D. C."**
There’s a lot more of the same. As to whom should get the credit - take your pick!