Phonomotor

That of course is Thomas Alvah Edison. Here is the best thing that he didn't invent, even though he could have:

THE PHONOMOTOR
is a curious little instrument, invented by Mr. Edison, in practical reply to a jocular challenge from a friend, who asked him, “Why don’t you invent a machine to talk a hole through a board?” He thought a moment, and replied, “I guess I can?” The practical result is a kind of steam drill or augur, which is rotated at an extremely rapid rate, but can only be set and kept in motion by the human voice.