It's going to need a footman (connects the treadle with the drive wheel.) Not a problem though. A long wooden paint stirrer (one for a 5 gallon bucket of paint) works well in a pinch.
Could you get closer pictures of the Mother-of-All? Like this:
I'm not seeing a bobbin on it and that could be a problem.
Also, that long knob on the back of the table, does it turn? If it does, turn it all the way out and remove the Mother-of-all and take pictures of it, like this: