Hello,
after all I managed to update the schematics of the reader run control
of my ASR33 Teletype from HP.
I also put a schematic of the RSR232 to 20 mA current loop converter
that I am using online.
And I have updated the teletype portion of my website.
Now I "only" have to clean up the scanned copies of the Geveke
schematics with photoshop to make them more readable and then
put them in nice pdf files.
If interested take a look at
http://pdp8.de/en
Gerold