I have two old pocket doors that were completely destroyed by the previous owners. The one set of pocket door rollers I was able to save, had to have the cast iron brackets welded. The rollers look like a pig with two legs and a single roller. They are cast iron, rollers are about three inches in diameter the whole unit is about 10 inches end to end. There is two receiver brackets in the tops of the door that the legs fit into.There appears to be an adjusting bolt to raise and lower the unit. There is also a patent stamp of 1884 but unfortunately no name. But the upper support has a fleur delis design. I am asking if anyone has seen this type or knows of where to possibly find them. Has anyone had luck putting rollers in the bottom of the doors versus the top such as used on heavy glass sliding doors? Any help and I will be forever in your debt. I would even rename my first born after you hahaha. Anyone needing a picture let me know and I can provide that.