Interfacing the Dura 1041 is very well covered in the book 'THE SELECTRIC INTERFACE A Hands-on Approach' by George Young. There are whole chapters on the Dura 1041 printer, encoding the Dura eyboard, interfacting the punch, tape reader and more. Steve.

On 2019-12-15 9:35 p.m., Jon Elson via cctalk wrote: Speaking as a person that has been up to my elbows in many Selectric terminals it is not possible to select too many of the selection magnets at the same time? if you pick all of the selection magnet at the same time you will get -5 rotate and 0 tilt.? Picking any of the positive selection magnets pulls the associated latch off the bail and cancels the positive motion of that latch. Picking the -5 magnet releases the -5 bail to get -5 motion which can be then combined with +1 +2 +3? +4 +5 rotate to get -4 -3 -2 -1 and 0 rotate respectively.? Now if you trip the shift magnet during a print cycle bad things will happen bad things will happen, a down shift while the ball is detented will usually result in the the rotate tape jumping off the shift arm and if you are lucky the ball will get released and it will wind up the slack and the rotate tape will? get caught on the dust cover and you can carefully? rotate the ball while keeping tension on the rotate tape and ease it back onto the shift arm.? An upshift while detented will probably break the rotate tape. The ones I used to work on the most where banking terminals with up to 3 selectrics on a control unit so if we where replacing something like a rotate tape the bank would not let us turn off the control unit and inside the typers there where unprotected 48V terminal block for the magnets, if you touched one with the rotate tape you where threading in it would burn the tape in half and to add insult blow the 48V fuse. Paul.