Display for universal use with clocks and watches indicates hours by balls running in slots

摘要

Under a stationary disc (100) a rotating disc (108) is located which rotates with the hours. The driven disc has an eccentric raceway (110) for balls (A1,B1,C1) located in slots (A,B,C) in the stationary disc. The hours (106) are marked along the slots and as the lower disc rotates the balls, driven along the raceway, move in the appropriate slot to indicate the hour