This blog is the internet's best source of information about Foley and Foley-Belsaw automatic hand saw filers, saw retoothers, saw setters, and other Foley and Belsaw sharpening equipment. It's also a resource for locating used saw filers, retoothers, and setters. There are free downloads of out-of-print owner's manuals, links to manuals for sale by Foley Belsaw, other obscure saw sharpeners, and vintage file catalogs from Disston, Heller, Nicholson, and Simonds.
Foley-Belsaw has friction drive wheels for retoothers and 387 saw filers that were equipped that way. Here's a picture that a reader emailed me of his invoice, showing the part number. Click on picture to enlarge.