Found ourselves a Structo

This (http://i.imgur.com/cFiOYdL.jpg) was found across the street, the neighbors just left it there, so we took it in. I was able to clean up the ends of the reed with a wire brush. http://i.imgur.com/yeZ73oE.jpg It's stamped 18, and loom at those brass end fittings. I am planning to actually use this loom, so the "antique" factor is fun, but there's a lot of rust removal ahead. I spent a good portion of the day cleaning heddles and the whole loom. I'm trying to combat the rust, as best I can. I may repaint where possible, and possibly refinish the wood. My one question is where to get the springs for the lever arms, Everything still works but those in particular seem like more rust than metal. The only thing that seems to be missing is one of the metal caps that sits above the lever arms, removed to replace the long spring I imagine. It's stamped 1394 on the top and the paper nameplate only has "o Artcraft" and the patent dates in blue. The shafts all say "awaiting patent"