[GreenKeys] 1 or 1.5 stop bits?

[Steve Garrison]

How many of you are aware. besides Duncan, that the Kleinschmidt machines
only made one half of a revolution for each character.  On the clutch
controlled portions of the mechanisms anyway.  The motor was turning the
non-clutch controlled portion of the shafts constantly obviously, but for
every full revolution of the controlled shafts you got two characters.

Steve G./N4TTY

-----Original Message-----
From: greenkeys-bounces at mailman.qth.net <greenkeys-bounces at mailman.qth.net>
On Behalf Of Jim Haynes
Sent: Tuesday, January 4, 2022 6:23 PM
To: Paul Heller <paul0926 at comcast.net>
Cc: greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] 1 or 1.5 stop bits?

On Sun, 2 Jan 2022, Paul Heller wrote:

> I think the entire idea of a stop and start pulse to synchronize 
> communication is a fantastic invention. I always wondered, however, if 
> the constant mechanical locking/unlocking of the clutches/shaft on 
> every character was a good idea. It seems it would wear out parts 
> faster, specially the stop/start pawl. But that does not seem to be the
case.
>
Well you have to remember that Teletype was world-class in knowing how to
make durable small mechanisms out of metal.  Here's a funny story told me by
Ben Stephens, a former sales engineer for Teletype.  He was summoned to the
office of E. J. Cook, who was high up in the sales organization - V.P. of
sales or something like that.  E. J. introduced Ben to a visitor from Japan,
and told him to take the visitor out to the factory and show him how we did
heat treating of all those little metal parts.  Ben didn't really know
anything about heat treating, but he figured E. J. expected to be obeyed and
no questions asked.  Those who knew E. J. better knew that he could be quite
a joker.

Ben said that on the way out to the factory, as they stopped to get safety
goggles and such, he realized why he had been chosen for the
assignment: he knew nothing about heat treating but he could fake it.
So he showed the visitor around the area of the furnaces and gave him a
lecture on heat treating.  The visitor took copious notes and thanked him
and departed.  Ben figures he probably set Japan back ten years in learning
how to heat treat small parts.
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