Bill I responded to Mike there seems to be a number of threads running on this. So in fact you do have the telegraph coil in the clock. Makes sense to me. Thats why the 100 V they needed to drive 10-20 ma through the coil over distance and had to account for line loss. The boook you mention. Online? Regards Paul WB8TSL
On Sat, Nov 1, 2014 at 8:00 AM, Bill Riches <[email protected]> wrote: > I have the wall mounted version. I believe that the hour adjust solenoid > took 100 volts or so. I will check my manual on the clock. At a minute > before the top of the hour until a minute after the hour all traffic would > stop on the WU lines and at the top of the hour a 100 v dc pulse came over > the lines to reset the time. I believe it was in the 30s when WU decided > they did not want to be in the time business and discontinued the service > and said everyone could keep their clocks. I can imagine the next day > clocks going home with office workers. WU charged a buck a month for the > clock, service, and batteries. Many large offices had hundreds of these > clocks. > > The book "American Clocks -Volume 2" by Tran Duyly has everything you ever > wanted to know about self winding clocks. > > 73, > > Bill, WA2DVU > Cape May > > > > --- > This email is free from viruses and malware because avast! Antivirus > protection is active. > http://www.avast.com > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
