25 Mar
2013
25 Mar
'13
2:50 p.m.
On Mar 25, 2013, at 2:38 PM, Lawrence Wilkinson <lawrence at ljw.me.uk> wrote:
On 24/03/13 22:15, Guy Sotomayor wrote:
I can't remember the internals at all at this point but I do remember that the
castings for the frame were *heavy* on the 1052. Nothing like any of the other Selectric
frames I saw (like the 2741) and certainly nothing like the Selectric typewriters that I
had (or saw). The 1052 was build like a tank.
As I said, the pick relays on the 1052 were all 48v so given your description, the
electrical portions are different than what's on the 735.
TTFN - Guy
On Mar 24, 2013, at 12:27 PM, Lawrence Wilkinson
<lawrence at ljw.me.uk> wrote:
AFAIK all the I/O Selectrics were much the same. The maintenance intervals were
dictated by how much they were used (one, two, three shifts). I'm not 100% sure the
desktop typewriters were designed for the same duty, but I wouldn't be surprised if
they were. On 24/03/13 17:35, Guy Sotomayor wrote:
Is that really true? The 1052 was
*very* heavy duty. I think they were similar in the way that the ASR33 and ASR35 were
similar.
TTFN - Guy
When I was in school (35 years ago) I had an IBM
1052 terminal that I interfaced to an 8080. The issue with the 1052 was that the relays
were all 48v so finding drivers was interesting. ;-) It took me a bit of fiddling with the
timing to get it to print properly (at 134.5 baud). It sure beat the ASR/KSR-33s that most
other folks were using for their terminals just for the "cool" factor! TTFN -
Guy
The mechanicals of the 735 and 1052 are basically the same. The 1052 has pin
feed, extra switches and things to suit use as a computer console, whereas the 73x are
designed for word processing use. The one I got came from such a WP system, though
I've no idea where the rest of that system got to. It was a "Kode" system
(Calne, Wiltshire, UK) which used paper tape.