The Chronograph of Inventions

May 19

• In 1857, a patent for an "electromagnetic fire alarm telegraph for cities" was issued to William Francis Channing and Moses Gerrish Farmer (USA).

  In 1987, a patent for "keeping a head alive" was issued to Chet Fleming (USA). A cabinet provides physical and biochemical support for an animal's head severed from its body. Oxygenated blood and nutrients are circulated by means of tubes connected to arteries and veins that emerge from the neck.