Anyone know where I can purchase the type of hinges found on old aluminum lawn chaises-- the type that have three or four positions, requiring you to completely fold the back of the chaise forward to "clear" the hinge? I've searched all over the web using keywords like "ratcheting hinges", "elbow hinges", ratcheting elbow hinges", etc. I've come up blank.

If I can't buy the hinges, I would be willing to cut them out of some old lawn chairs, but I can't find any with this type of hinge anymore!