From the close up pics on your blog, your wheel appears to be in excellent condition. It is a double drive wheel and string does make an acceptable drive band.
The front maiden, that's the upright bit at the top front of the wheel where the bearing for the front of the flyer is, should be adjusted so that the flyer is level when you spin.
LOL over your comment about keeping the wheel turning in one direction

We've all been here and done that! Practice treadling without trying to actually spin any thing. Try to keep it going one way while treadling as slowly as possible. You will get it - it just takes a bit of practice in the beginning.
And do keep us posted if you find any information on the history of this wonderful wheel.