LAMP

Lightbulb sockets, light sockets, lamp sockets or lampholders provide electrical connections to the lamps and support it in the lighting fixture. The use... On July 24, 1874 a Canadian patent was filed by a Toronto medical electrician named Henry Woodward and a colleague Mathew Evans. They built their lamps with different sizes and shapes of carbon rods held between electrodes in glass cylinders filled with nitrogen. Woodward and Evans attempted to commercialize their lamp, but were unsuccessful. They eventually sold their patent to Edison in 1879... Since the initial invention of the first Lamp Socket, a shell, interior, and a cap, the basic design didn't change all that much over the years.