Interesting Historical Engineering Article<https://spectrum.ieee.org/history-of-power-grid> on Henry Warren and the history of 60HZ as a time standard. Thomas D. Erb p: 508-359-4396 f: 508-359-4482 a: 97 West Street, Medfield, MA 02052 USA e: tde@electrictime.com w: www.electrictime.com Tower & Street Clocks Since 1928

Hi Thomas: Thanks for the link. 1906439 <https://patents.google.com/patent/US1906439> Frequency regulating system, Henry E Warren, Warren Telechron Co <https://patents.google.com/?assignee=WARREN+TELECHRON+CO&peid=6129f35c78098%3A82%3Ac8a0086e>, App: 1929-01-08, Pub: 1933-05-02 -- Have Fun, Brooke Clarke https://www.PRC68.com axioms: 1. The extent to which you can fix or improve something will be limited by how well you understand how it works. 2. Everybody, with no exceptions, holds false beliefs. -------- Original Message -------- > Interesting Historical Engineering Article<https://spectrum.ieee.org/history-of-power-grid> on Henry Warren and the history of 60HZ as a time standard. > > Thomas D. Erb > p: 508-359-4396 > f: 508-359-4482 > a: 97 West Street, Medfield, MA 02052 USA > e: tde@electrictime.com > w: www.electrictime.com > Tower & Street Clocks Since 1928 > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com >