Yesterday, we featured this brain teaser from the  March 1945 issue of Popular Science.

At first glance, it looks like it will work.  If you trace the path with button a pushed, bell A should ring.  But what you might not have noticed is that with neither button pushed, both bells are hooked up to the transformer in series.  So they will ring continually, albeit probably at reduced volume.

So wartime shortages or not, Jones will have to scrounge up some additional wire.