We recently acquired an antique dresser with a couple of broken hinges. We're hoping to be able to replace them, but can't figure out what they're called. We haven't been able to turn it up on google, and the guys at the local hardware store didn't know either.
The hinges allow a mirror to tilt forward and back between mounts on the two sides. There's not room for anything that sticks out very far, as in the examples here. A couple pictures of the busted hinges are below, plus our illustration of where they go on the dresser.