Picked up two Ames 1945 US folding shovels today. One is in semi relic state(looks like it sat in a lake for some time) and the other in pretty good shape. Now to my problem, both are stuck to where the shovel blade is outward. I can’t turn the unscrewy part at all, or find a spot to let some WD40 soak in. Any ideas? Someone tried to take a pipe wrench to one to get it to move but that didn’t work. So I need your guys help.

Thanks,
George