[time-nuts] Quartz assisted pendulum clock.
cfharris at erols.com
Thu Jan 5 23:53:38 EST 2006
John Miles wrote:
>> I believe Big-Ben in the UK can be corrected by adding pennies to it, so
>> providing an upwards force. That is what I am told, but I must admit it
>> seems a bit unlikely. Perhaps possible if there are a lot of pennies
>> there. Apparently this is done, as it allows corrections without
>> stopping the clock.
> Sounds like the same idea as the regulator weight tray on the GE master
> clock described on that Telechron site. You're supposed to add/remove
> weights from the tray until the clock is running at the desired rate.
A pendulum swings at the same rate, regardless of its weight. The controlling
feature is the length of the pendulum.
A balance wheel, is a different beast, because the weight of the wheel is
balanced against the tension of the spring.
More information about the time-nuts