[GreenKeys] Stock Ticker

[Brooke Clarke]

Hi:

It's pretty simple.  With a known starting position (more on that later), say you're on the letter A (and for 
illustration say the letters are in alphabetical order) then if you send 5 pulses you will be on F. With a known number 
of possible positions you just keep going around and around.  One of the problems is what to do if a receiver gets out 
of sync. Edison came up with the unison-stop that solves that problem.  I've got a lot of info on my patents web page at:
http://www.prc68.com/I/StkTckPat.shtml#U1
and for the WU 5A ticker at:
http://www.prc68.com/I/WU5A.shtml

I'd like to talk off line with Rick about how to identify the different versions of Edison's ticker.

Have Fun,

Brooke Clarke, N6GCE
http://www.PRC68.com
http://www.End2PartyGovernment.com/


pdwills at cedarknolltelephone.com wrote:
> Greetings all,
>
> One of my telephone switching collegues just acquired a
> stock ticker and is interested in how it works.  Does anyone
> here know about them?
>
> Rick's address is below.
>
> Thanks.
>
> PDW
>
> ----- Original Message Follows -----
> From: Richard Walsh<wepbx at sbcglobal.net>
> To: Paul Wills<pdwills at cedarknolltelephone.com>
> Subject: Stock Ticker
> Date: Tue, 25 Oct 2011 19:10:37 -0700 (PDT)
>
>> Hi Paul,
>> Hope all is well.  Question - do you know anything about
>> old stock tickers -  I recently had the good fortune to
>> acquire an fine example of the "Universal" stock ticker -
>> one of about 6000 made prior to 1890 (if what I saw on the
>> internet is accurate).  
>> I am trying to figure out how it works.  It has two
>> electromagnet coils - one advances the print wheel to
>> orient a specific character, and the other operates a
>> print hammer that pushes the paper against the selected
>> character. The latter coil also seems to reset some aspect
>> - but not as you'd expect - to reset the wheel to the
>> first character (there is no spring to reset the wheel
>> back to a starting position. I don't know if the system
>> required two "telepgraph" circuits - one for each coil?
> I
>> don't know if local batteries were required. Pictures
>> available.  
>> Rick
>>
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