[time-nuts] The pendulum problem...
Brian, WA1ZMS
wa1zms at att.net
Fri Jan 31 05:06:47 UTC 2014
Now that I have exposed myself as being an antique time-nut as well
as a modern one, (I'm a man of extremes!) I have a question to the group..
Has anyone addressed the issue of trying to keep a pendulum clock
locked to an external reference (i.e.: via electro-magnet, etc.) and yet
can work around the problem that very old pendulum clocks have
an issue with the escapement drive stopping while such a typical 8-day
antique clock is being wound?
I can understand and deal with syncing the pendulum to an external
reference.. but you end up with a time offset when the clock's main
wheel is being wound once a week. The pendulum does keep swinging
however the drive power to the 2nd gear is being removed while the
clock is being wound.
"Modern" pendulum clocks have a modified gear drive where the
escapement is still being driven while the main wheel is being advanced
to wind the weight cable. Not the case for 200+ year old clocks.
Regards,
-Brian, WA1ZMS/4
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