[GreenKeys] Off topic you say? Here's your off topic!

[COURYHOUSE at aol.com]

here are the  clocks i want to go in the museum.  they are   even AZ 
related in this photo!
see...   http://lcweb2.loc.gov/service/pnp/fsa/8d27000/8d27400/8d27403r.jpg
 
Ed
 
 
In a message dated 4/21/2013 7:01:12 P.M. Mountain Standard Time,  
larryradio at att.net writes:

Been  there done that...............

I have about 12 of those clocks in my  house.  I use Rado Shack D cell 
combiners to get the 3 volts for the  winders and double stick them on the 
base.

I use 4 volts from a  relay that keys the clocks on the hour to "zero" out 
any error.  Most  are within a second or two when the pulse comes thru.

The correction  pulse comes from an ESE master clock.  I seet it every few 
months  from WWV.  The master is good for about a second every 4  months.

At my radio station, WRNJ, whe have a bunch of them too with  the sweep 
second hands.  Same set up but using a 2N3055 to key the 4  volts to the 
corrector solenoid.  That pulse comes from the GPS clock  that keeps the 
computers happy.

ESE clocks all have a solid state  "relay closure" when the hour comes up. 
It's one second of  closure.

We combine the WU clocks with the AP Model 15 that uses  HeavyMetal to get 
the AP headlines on the  hour.

lar
K2JIA


----- Original Message ----- 
From:  "Frank Carraro" <kf9nz at sbcglobal.net>
To:  <greenkeys at mailman.qth.net>
Sent: Sunday, April 21, 2013 7:27  PM
Subject: [GreenKeys] Off topic you say? Here's your off  topic!


> Since our dear moderator enjoys them from time-to-time,  here's one from a
> greenkeyer who's been here since before the internet  and windoze.  RE:
> WESTERN UNION TIME SERVICE and related  stuff.
> I have contact with an entity (how's that for keeping it  undercover) who
> has a collection of Western Union and Self-Winding  clocks going back
> beaucoup years.   I have information on  how they work, and have restored 
a
> Self-Winding (made by the Co. of  that name) that quit self winding to
> operation.   What I  want to do is to install several of these clocks in
> different places  on the - shall we say - "campus"  or  group of 
buildings,
>  and build a circuit (there's plenty of twisted pair around) linking  
these
> clocks - the easy part - with a system that receives time  signals off of 
> the
> internet and translates it into  every-even-hour pulses to maintain these
> clocks on time.  The  latter is the hard part.
>
> Some of the info I have about the WU  service is interesting.  Even into 
> the
> '40's and '50's  the service cost like $2.50 a month, and installation was
> around  $20.00.    WU  had a catalog of over a dozen different clocks -  
> even
> desk clocks.  In the early days you could buy your  own clock from The
> Self-Winding Clock Co (N.Y. and Chi.) and have WU  supply the service. 
> They
> were powered by two No. 6  dry  cells which ran the motor that wound the
> clock every  hour.
>
> Let's have a good O-T scramble now.
>
>  Frank
>
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