[GreenKeys] Fwd: Teletype 37ASR partially restored

COURYHOUSE at aol.com COURYHOUSE at aol.com
Tue May 28 11:48:22 EDT 2013


Jim -   was there anything on the  drawing  board   for a  future 
mechanical model that would  even attempt   faster  speeds that  you knew of!?
 
Ed#
 
 
 
 
In a message dated 5/28/2013 7:44:06 A.M. Mountain Standard Time,  
jhhaynes at earthlink.net writes:

On Tue,  28 May 2013, COURYHOUSE at aol.com wrote:

> Amazing....
>  how  did they hold up in long term service? 
> fast   moving  parts.......
>  
I don't know, but I've been  told  (that sounds like the beginning of
some off-color bit of  doggerel from my youth)
that not enough were made and they were not in  service long enough
for all the failure points to be discovered and  fixed.  While Teletype
did a lot of intensive testing in R&D,  still you don't find all the
weaknesses of a design until you get a lot of  equipment in the field
and start getting back the failure  reports.

One area of difficulty was certainly the selector.  It  was hard enough
to make a good mechanical selector at 110 baud, and a lot  harder at 150.
This wasn't such a severe problem in the stock ticker that  preceded the
37, as the stock ticker used 6-level code.  IMHO they  should have made
it a parallel input printer and let us make an electronic  receiving
distributor to run it; but those mechanical guys were bound and  determined
that they could do it all mechanically, given enough  time.

And then the keyboard was a fiasco.  It was a bad keyboard  in the
32/33/38 series of machines; and definitely not something you  would
want in an expensive top-of-the-line machine like the 37 was  intended
to be.  I was told that they knew how to make a much better  keyboard
but the product schedule didn't allow sufficient time to develop  it.
Well there was enough schedule slippage because of the printer  that
there would have been time to do the better  keyboard.
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