Fig. 111. Simple calendar on time train. 352 THE MODERN CLOCK. the hour pipe and carries the calendar hand H under thehour hand and close to the dial. The pinion on the hourpipe revolves once in twelve hours. The wheel E has twice … yig. 112. Calendar work for grandfather clocks. as many teeth and will therefore revolve once in twenty-four hours. It moves the ratchet G one tooth at each revo-lution ; therefore the hand H moves one space every twenty-four hours. There arc 31 teeth, so that the hand must beset forward every time…
Clocks and watches
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