TIMEKEEPER WITH MECHANISM FOR MEASURING SETTABLE PRESCRIBED PERIOD

摘要

PROBLEM TO BE SOLVED: To provide a timekeeper at least partly modifying drawbacks of conventional timers.;SOLUTION: The timekeeper is provided with a first timer (4), a means (12) for selectively connecting this to a train of the timekeeper (T), a second timer (5), a synchronization coupling between the first timer (4) and the second timer (5), and a fly-back means (13, 13', 9, 11) of the timers (4, 5). An auxiliary power source (10') is in drive relation with the second timer (5). Unidirectional couplings (6a, 7a) are positioned between the first timer (4) and the second timer (5), regulate the moving speed of the second timer (5) at a prescribed ratio to the moving speed of the first timer (4), permit the unidirectional relative movement of the first timer (4) to the second timer (5), when the second timer (5) is in a stop position, and permit the unidirectional relative movement of the second timer (5) in the opposite direction, when the first timer (4) is at a stop position.;COPYRIGHT: (C)2007,JPO&INPIT