[GreenKeys] Western-Union time service

[Sam Hallas]

brooke at pacific.net wrote:

>  Yes, Western Union used the clocks made by the Self Winding Clock Co.
>  See: http://www.prc68.com/I/SWCC.shtml
>  http://www.prc68.com/I/SWCC2.shtml
>  I have some ideas how to synchronize the clocks to WWVB and how to
>  get correct DST changes.

Brooke,
I know about regular master clock systems with minute and half-minute 
pulses, but I never heard of self-winding clocks being synchronised. You 
live and learn!

I remember introducing some of the early master clock systems to be 
synchronised to the radio standard time transmissions - MSF from Rugby 
here in the UK in those days. They were made by Patek-Phillippe, who are 
better known for making expensive wrist watches.

Cheers,
Sam