History: In 1914, Chester MacDuffee constructed the first suit with ball bearings, as the medium to provide movement to a joint. The suit was tested in New York in 214 feet of water. (1200x1815)

http://i.imgur.com/UxAINfn.jpg via /r/HistoryPorn http://www.reddit.com/r/HistoryPorn/comments/3gpllp/in_1914_chester_macduffee_constructed_the_first/