[bontai Joe]

This was designed by and most likely built by W. W. Grinder for Troy-Bilt. It looks rusty, but serviceable and is selling pretty cheap as I type this. I own a W. W. Grinder chipper of similar design and it is an excellent machine for material up to 3" in diameter. Here is a link:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=42228&item=4341002627&rd=1