To try to prevent incipient blowouts, try this road-side temporary fix:

Find a piece of cardboard  along the road. Discarded beer six-pack works well. 
Cut/tear a strip several inches long, an inch wide or so. Place on the inside 
of the tire, between the tube and the weak spot on the tire. Put glossy side 
toward the tube to reduce the friction between the tube and the reinforcement. 
Reassemble and continue your ride. There is no reason you can't use this same 
trick at home.

You could also cut a section out of one of your spare tubes to use as 
reinforcement, but the six-pack container approach has the benefit of removing 
some trash from the roadside while also dealing with your issue.

stan

On Jul 24, 2014, at 8:06 AM, Richard Womer <rickpic...@gmail.com> wrote:

> Thanks, guys. I'll check out Sheldon Brown's site. Steve, the
> discussion at that link spans the whole range of opinions, from "no
> problem!" ro "almost certain disaster."
> 
> Meanwhile, I closely examined the tire in question, and there is a
> small area where it has started to delaminate along the bead. Since
> it's off the rim, I don't know if that is where the bulge was
> appearing or not; but for now I think I'll just get another tire.
> 
> Bob, the next time I get a flat I'll pop on over and check in with you
> and Chris!
> 
> Rick
> http://photo.net/photos/RickW
> 
> 
> On Thu, Jul 24, 2014 at 1:22 AM, David Mann <dmann...@gmail.com> wrote:
>> On Jul 24, 2014, at 12:05 pm, Rick Womer <rickpic...@gmail.com> wrote:
>> 
>>> Short version:  The rims are "hookless" dimpled Weinmanns. Is there a 
>>> modern tire that will stay on a hookless rim? Or, how do a get a modern 
>>> tire to stay on?
>> 
>> Could you try a tubular?  They're tires with the tube sewn into the casing 
>> and are normally glued onto the rim.  Still quite easy to get as many racers 
>> swear by them.  I find them expensive and fiddly and am thinking about 
>> selling my tubular race wheels to get some clinchers.
>> 
>> Failing that, perhaps you could find more info on Sheldon Brown's website.  
>> That's a treasure trove of information about bikes.
>> 
>> http://www.sheldonbrown.com/
>> 
>> Cheers,
>> Dave
>> 
>> 
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