This sounds like the same machine my sister-in-law gave me on Monday. I spent most of the day yesterday working on it... cleaning it up. The bobbin winder was rusted and wouldn't move but my husband used some FluidFilm and now it's working perfectly. But I need to buy a belt and don't know the length to buy. Does anyone out there know what size I should get? I looked on eBay and they offer different sizes. Here's a picture of the machine I'm working on. It's a labor of love.......