Hey Pete, thanks for re-posting that link. I've saved it. My Sunbeam is probably 50's vintage. It has the rotating shading control knob on one end. If I recall correctly, neighbors had this type of toaster that was probably similar vintage to mine, but I think it had a feature that allowed the user to push in on the shading control in order to stop the toasting cycle and raise the bread. Mine doesn't have that. If I want the toast up sooner, I have to turn the control all the way to the lightest setting and even then it doesn't always stop the toasting, so the next step is to unplug the thing. And of course as soon as you plug it back in the first thing it does is self-lower even if empty.
One of these days I'll open it up and see if I can make some adjustments. It went to the shop for the same non-lowering behavior a long time ago, and it really hasn't had all that much use since and I'm not willing to pay to have it repaired again so will take a shot at it myself sometime.
Ralph