Diplock's Pedrail. What a name! Somebody should call their band this name.

If it had caught on, we'd still know about it, but it is a interesting idea for rough terrain, maybe rocky terrain. Reminds me immediately of these other two unusual ideas in rim/wheel design http://justacarguy.blogspot.com/2011/03/justacargal-found-most-unusual.html

Found on http://steampunkvehicles.tumblr.com