This may be a bit late, but I think the occupation you're looking for is "tambourer" (rather than jamboiler or whatever): A person who embroidered using two frames of closely fitting hoops to hold the cloth stretched between them. Looking like a tamborine. (On the other hand, if you search for "tambourer" on Google, you also find links to sites which have absolutely nothing to do with embroidery - and I haven't the faintest idea what the word means in that context, which I do not recommend.) Alan