WSJ Historically Speaking: The Second Life of Troubled Inventions

Thomas Edison, circa 1870s, with his phonograph PHOTO: EVERETT COLLECTION

Thomas Edison, circa 1870s, with his phonograph PHOTO: EVERETT COLLECTION

It’s been a difficult time for the high-profile medical startup Theranos. For months, controversies have shadowed the linchpin Edison blood-testing device that the Palo Alto, Calif., company​ has developed. The method uses a few drops of blood, obtained by a finger-stick, instead of the usual multiple vials.

The fate of the Edison device, named after the inventor, remains unclear. But the story of Thomas Edison himself offers some hope. Not all troubled products remain troubled.

In 1875, the 28-year-old Edison had already obtained almost 100 patents without having invented something truly new. He thought he had the answer in the electric pen. Edison wanted to take the tedium out of copy-making by designing a motorized stylus that would act like a kind of stencil, able to punch words through a stack of papers up to 100 pages thick. Continue reading…