dan,
don't feel like make a drawing right now, just got home from work...
So here I found just a quick picture on google. The technique is in German called
Aufschiebling
These examples both involve extending the tie beam out past the wall, as described earlier, but it does not have to be done this way. Instead, you can have a purlin (I guess you would call this a purlin, in the German tradition it would actually be called a sill) out past the wall, supported by angled support braces, which can be made to look quite attractive.
The two shown are the simplest form of the aufschiebling, the other that I described is a more complex variety.
