A Selectric printer...

Mike Ross tmfdmike at gmail.com
Mon Nov 23 02:50:40 CST 2015

Just the typewriter. Western I/O evidently threw away all the IBM
electronics and took just the basic I/O Selectric mechanism, and
installed their own electronics in the base.

Video here, some pics in comments:


On Mon, Nov 23, 2015 at 3:46 AM, Paul Berger <phb.hfx at gmail.com> wrote:
> On 2015-11-22 9:20 AM, Mike Ross wrote:
>> I have an I/O Selectric device which is badged as, and was originally, an
>> IBM 2970 Reservation Terminal.
>> For better or worse, it was one of those bought up in the late 1970s by a
>> company called 'Western I/O", based out of Scottsdale Arizona. They
>> converted them for home use. One version used a Motorola 6800 to make a
>> nifty-sounding terminal with selectable baud rates etc. I appear to have
>> the 'other' version; a cheap and nasty printer-only conversion with some
>> form of parallel port.
>> Anybody else got one? Docs about them? Parts? Schematics? I'd like to get
>> hold of one of the 'proper' terminal conversion versions... Must be some
>> squirreled away in garages!
>> Alternatively, any doc on the original 2970? There's an incredible dearth
>> of information about what we're once very common devices...
> Did you get the whole machine typewriter and control unit or just the
> typewriter?  If you got the control unit the manuals may be inside.  The
> typewriter part of it is just a modified office selectric with solenoids to
> do the selection and operate the functions and then a whole bunch of open
> strap contacts for feedback and also to sense what is typed on the keyboard.
> One of the first problems you may encounter is the motor belt is likely
> rotten and would be a challenge to change if you have never been inside a
> selectric, especially with all the extra stuff hung off it on an I/O.  The
> reservation terminals I worked on nearly 40 years ago where connected to a
> telegraph line. 75 baud with about a 150V DC swing.  Pictures?
> Paul.


'No greater love hath a man than he lay down his life for his brother.
Not for millions, not for glory, not for fame.
For one person, in the dark, where no one will ever know or see.'

More information about the cctech mailing list