My 1959 3800 had a set of 18" tube type tires with some really spooky sectional rims. One bead was a full circle ring with a couple of relieved areas that had to be pried over the main wheel assembly, bending it pretty severely in the process. Then it could be driven sideways with a hammer to remove it. Reinstallation was a reverse of the removal procedure. The ring had to be centered perfectly during inflation so it could lock into place. Even a little wear or damage to that ring made the wheel worthless and/or dangerous.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!