_Teletype_Tales_
Warning, this is rather long and in three parts. If you are not
interested in TTYs, just skip this and the next two emails.
Part 1 - Ancient History
My very first interaction with a computer, in 1976, was via an
ASR33 teletype. I continued to frequently use ASR33s for the
next several years. A good friend of mine actually owned one.
Consequently, I have a definite nostalgia for them and wanted to
add one to my collection for a long time.
I finally acquired one in December of 2001. Actually, I got two
model 33 teletypes, an ASR and a KSR. They came from a HAM radio
operator. The ASR is on a floor stand and the KSR is a tabletop
unit. The ASR had been well used. It was dirty, inside and out,
full of dog hair, bug bits and even some broken light bulb glass.
There was "goop" all over that I took to be coagulated lubricant
but it turned out to be degraded foam rubber (but that part of the
story comes later). The cover was yellowed with some cracks here
and there. The KSR wasn't much better even though it had been
stored in a box. As a matter of fact, it was worse because it had
been moved around in the box but the shipping screws were not in
place. This allowed the typing unit which is "free floating" to
shift around and smash the plastic cover to bits.
When I got them home, I immediately put the KSR away for "another day"
under the assumption that it was badly damaged. I tried to carefully
clean as much of the crud out of the ASR as I could without actually
taking anything apart other than taking the cover off.
I should point out here that, while I'm not bothered by the complexity
of electronic circuits, I find mechanical complexity (lots of levers,
gears, cogs and the like) a bit intimidating.
After the cleaning, I hand turned the motor a few revolutions. It
turned freely, so I went ahead and plugged it in and switched it on
to local. The motor hummed nicely, there was no grinding or other
bad noises. The hammer pad had been replaced with a plastic faucet
washer, held in place with shrink tube. It seemed secure, so I slid
some paper in and pressed a few keys. It was clearly trying to do
something but it was definitely not right. The hammer was striking
the type cylinder but the carriage was not moving. Moving the paper
around, you could see that sometimes the struck character corresponded
to the pressed key, sometimes not. I asked for help on both cctalk
and greenkeys (I really wanted to try to get someone to come "on site"
and work on it with me) but didn't get anything very useful. Sadly,
I put the ASR away for "another day".
End of part 1.