[GreenKeys] Computer Control of an ASR Mod33 Teletype Punch

[john at toebes.com]

In this case, I need something that the computer can choose whether or not
to print.  The typical scenario will be a kid comes up to the machine and
types in their name to a prompt after which the teletype will print out
their name on the papertape.  A solenoid sounds like a proper choice in this
case, but I'm wondering if there is another solution.  Is there a separate
path to the printer and the papertape for the signals once they have been
decoded?

 

From: mike <m.zahorik at sbcglobal.net> 
Sent: Wednesday, November 28, 2018 5:55 PM
To: 'WAYNE' <teletypeparts at comcast.net>; john at toebes.com; 'Hugh Pyle'
<hpyle at cabezal.com>; 'Greenkeys' <greenkeys at mailman.qth.net>
Subject: RE: [GreenKeys] Computer Control of an ASR Mod33 Teletype Punch

 

I made a small block out of aluminum that has a keeper jam screw in it. Here
are a couple of pictures. It will keep the hammer from hitting the type
wheel. Carraige returns, bells and all the control function will still work.

 

Mike Zahorik 
(414) 254-6768 

  _____  

From: greenkeys-bounces at mailman.qth.net
<mailto:greenkeys-bounces at mailman.qth.net>
[mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of WAYNE
Sent: Wednesday, November 28, 2018 04:25 PM
To: john at toebes.com <mailto:john at toebes.com> ; Hugh Pyle; Greenkeys
Subject: Re: [GreenKeys] Computer Control of an ASR Mod33 Teletype Punch

 

If you build something to punch without printing it will need a special
suppression codebar which is not easy to install.  I have never attempted
it.  Its a parts kit that I have seen somewhere.  

 

A solenoid will hold the codebar to the right and down when energized the
same as the homemade part does.  

 

I have seen them installed on Jones & Lamson Editors that I used to work on
for J&L in Springfield, VT.  They had about 15 in house.  The purpose was
when the 8K (yes, 8K) memory computer would change ASCII to EIA and punch
the EIA tape program.  Believe it or not, I actually  ended up repairing the
computer as well as the 33's.  Alden Self Transit was the computer company
and they went out of business.  It was 3 power supplies and 3 circuit boards
with 8 proms.  About 50 screws to take cover off the circuit board section.


 

Here are pics of the machine.  Paul Heller has the only one I know of.  This
is his.

 

Wayne

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