Henry Woodward (inventor)

On July 24, 1874, Woodward and his partner, Mathew Evans, a hotel keeper, filed a Canadian patent application on an electric light bulb.

[1] The relationship of the Woodward/Evans work on the incandescent bulb to that of others, including Edison, on electric light is explained in the following passage of an article in a 1900 issue of Electrical World and Engineer as follows: "The first incandescent lamp [developed by Woodward and Evans] was constructed at Morrison's brass foundry in Toronto and was a very crude affair.

Woodward made the mistake of filling the tube or globe of this lamp with nitrogen after having exhausted the air.

The carbon burner, a "most important feature of a practical lamp" differs widely from Edison's filament.

Each contributed to the development of the incandescent lamp, but it was Edison who assembled the necessary components to make the first practical electric light bulb.