wooden wheel prototype for a patent application, to try to replace rubber wheels during the WW2 shortage

Found on http://aacalibrary.tumblr.com/  the patent is at  http://www.google.com/patents/US2353935

Interesting, portable, for track or shop use

The video isn't embeddable, but you see how it pivots, and can be used to get a car or truck up in the air, and if you make one yourself, you can design the height and length to suit your needs

The video is here: https://www.facebook.com/video.php?v=10154513384305112