[GreenKeys] FWD: Jim knows what those ladies are doing

[COURYHOUSE at aol.com]

someone  needs  to  buy  it!
 
 
 
 
In a message dated 5/7/2013 9:09:08 A.M. Mountain Standard Time,  
k9tty at dls.net writes:

My  sincere thanks to Jim Haynes for explaining the photograph
of the New York  Stock Exchange operators. The special keyboard
is interesting... Possibly  six level?

Don K9TTY







Begin forwarded  message:

From: Jim Haynes <jhhaynes at earthlink.net>
Date: 7 May  2013 9:36:25 AM CDT
To: Don Robert House <k9tty at dls.net>
Subject:  Re: Does anyone know what these ladies are doing?

That is the sending  installation of the NYSE that was put in along
with the new "900" stock  tickers.  I don't know how it was used -
presumably the paper tickets  are reports of trades and they are
keyboarding them into tape to be  transmitted on the stock exchange
wire.  You can see in the right  background some of the old black cube
tickers from 1930.  The "900"  stock tickers were officially called
"Model 28" by the Bell System, but  they actually used Model 37
technology.  In my opinion that was the  last successful Teletype
product based on almost entirely mechanical  technology.  The later
Model 37 and Model 38 didn't achieve much in  the way of sales
and never got all the bugs worked out.  And the next  successful
products were the 40 and 42/43 which used a lot of  electronics.






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