Mickey2

I think Turissa is Swiss and some of these (including a few similar German brands) had a type of bobbin case with a hinged lid you just close onto the bobbin. With these there are no separate bobbin case, but it's still vertical (not drop in). My Phoenix is like that. I don't know too much about various Turissa models, but you will get more help if you can manage to post a picture or two. If QF is misbehaving you can post a picture on an image bin or public album and link to it.