Electric clock

In an electrical clock with a quartz oscillator, a frequency divider connected to and following the oscillator and an output stage driven by the frequency divider, in the output of the output stage there being disposed a single phase stepping motor acting on a clockwork gear train driving an hour tube and a coaxially mounted minute tube, and a storage battery supplying the operating voltage and a charging circuit for the battery, the improvement wherein

• the single phase stepping motor, including an excitation coil, the clockwork gear train and a carrier element form a self-contained construction assembly, as a connectable first component,
• a single printed circuit board, the quartz oscillator, the frequency divider, the output stage and the charging circuit being disposed on said single printed circuit board and constitute an electrical assembly, as a connectable second component,
• two conducting pins being fastened to said excitation coil and operatively connecting said first component with said second component electrically,
• a carrier plate being formed with an opening, said first component and said second component being secured mechanically on said carrier plate,
• said hour tube and said minute tube, respectively, extending through said opening,
• gearwheels of a switch device as a third component,
• bearing means for mounting said gearwheels of the switch device, said bearing means are disposed on a front side of said carrier element, said front side faces away from the clockwork gear train,
• said carrier element includes means for mounting said clockwork gear train,
• said gearwheels are operatively connected to said hour tube,
• said bearing means includes pins formed on said front side of said carrier element, said pins are arranged on a circle concentric to the hour tube,
• said gearwheels of the switch device include,
• a gear concentrically secured to the hour tube,
• an adjustment disc of the switch device having an inner toothing concentric to the hour tube,
• a plurality of pinions rotatably disposed on said pins and intermeshing simultaneously with said gear and said inner toothing.