It looks like you have steel rims. They are practically sure not to have a hook bead.
I want to add why I took an interest in this thread. I have never used airless tires but I shopped and researched them. Everyone seemed to think they were heavy, hard riding, high rolling resistance tires. Some claim the very latest ones are better but it could be hype.
I tried Vittoria Zaffiros on an '82 Schwinn, which did not have hook bead rims. The tubes blew out when I put the wheel aside after mounting the tire, before I even mounted them to the rim, but I used 100 PSI. They stayed on when you degreased the inside of the rim, but I shouldn't have second-guessed how necessary that was, and it may not work all the time. Tires can have mold release agent on them which can screw it all up, or a sharp bump can derange everything.
I had steel rims on another bike, but it came with slightly less high-performance gumwall tires with a wire bead and I kept the pressure down below 75. A lot of bikes do fine without a hook bead.
The guys on the c&v subforum would be able to help with which tires are good for steel rims. They might be interested in your bike, too.
Last edited by garage sale GT; 09-04-10 at 05:45 AM.