Method and aparatus for synchronising a mechanical oscillating system to the accuracy of a quartz standard

Abstract From the Canadian patent

A method of synchronizing to the accuracy of a quartz standard, a mechanical oscillating system in particular the timing control of a clock in which timing pulses, derived from a quartz oscillation act on the frequency, of the oscillating system characterized in that an "exiting value" signal is derived from the oscillating system; frequency deviations of the existingvalue signal from the timing pulses are detected by a phase comparison; and the frequency of the mechanical oscillating system is acted on in accordance with the deviations detected.