One of the leads to more depictions of yarnwinders (from two people, independently, the Internet is a small place after all) was to the North Porch portal of Chartres cathedral. There are, among many other things, scenes from the active life as opposed to the contemplative life, and the active life shows women at textile work.

I had a little rootle around to find out a tiny bit more about the portal, and the sculptures, including their date, and quickly found that Chartres has a lot of info online. For instance, there's a very cool overview about the programme on the portals by Alison Stones, done in collaboration with the Uni of Pittsburgh, and which you can find here. The Uni of Pittsburgh also has a searchable database with images from Chartres, accessible here.

So if you feel like looking at some sculptures and some stained glass - enjoy!