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Application filed by J RiedenerfiledCriticalJ Riedener
Publication of CH97273ApublicationCriticalpatent/CH97273A/de
G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
G04B19/00—Indicating the time by visual means
G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
G04B19/24346—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator band-shaped
G04B19/2436—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
G04B19/24373—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by an energy source which is released at determined moments by the clockwork movement
Method for a centrally controlled telecommunication exchange system, particularly telephone exchange system, with a central control unit and peripheral control units