The Talking Machine Patent Archive

Patents you could hear

Piano action wippen

Patent drawing of an electromagnetic player-piano mechanism showing a rotating shaft, rows of magnets on pivoted walking beams, a tracker bar with a bristle brush contacting a perforated paper music roll, and thrust rods connecting to the piano keys.AUTOMATIC PLAYER FOR MUSICAL INSTRUMENTSHenry F. Herman · October 16, 1917