These have been on ebay for some time now. Don't see too many rollers like this for sale. Very hard to find. Look similar to the ones in a 49 Eureka I went to look at some time back. Check out the link below..........
http://www.ebay.com/itm/c1930-40s-s...0?pt=Architectural_Garden&hash=item5af59d0bb6
http://www.ebay.com/itm/c1930-40s-s...0?pt=Architectural_Garden&hash=item5af59d0bb6