Johann Nepomuk Maelzel
…Johann Nepomuk Maelzel (or Mälzel; August 15, 1772 – July 21, 1838) was a German inventor, engineer, and showman, best known for reverse engineering the metronome that Dietrich Nikolaus Winkel invented and mass producing it. As for several music-playing automatons as well as displaying the Mechanical Turk chess…