US PATENT SUBCLASS 968 / 114
.~ Setting the frequency [G04B 17/12]


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968 /   HD   HOROLOGY

103  DD  MECHANISMS FOR STABILIZING FREQUENCY (magnetic subclass 497; in striking mechanisms subclass 224; stopping and regulating of the running subclass 234; electrical and thermoelectric regulating mechanisms subclass 496) [G04B 17/00] {8}
114.~ Setting the frequency [G04B 17/12] {3}
115  DD  .~.~> By displacement of devices carried by the pendulum or by adjusting the pendulum length (pendulums and suspension subclass 105; self-adjustment of the regulating lever subclasses 122, 123, and 509; adjusting the stroke of the pendulum subclass 123; indicating by acoustic means subclass 217; synchronization with a standard clock subclass 509; metronome with a variable length subclass 821) [G04B 17/12B]
116  DD  .~.~> By adjusting the devices fixed on the balance (construction of the pendulum subclass 110; balancing subclass 132) [G04B 17/12C]
117  DD  .~.~> Adjustment devices [G04B 17/14] {5}