I am somewhat familiar, I have a set that I've never mounted but I have looked into them.
Here is a link to the patent

Leupold patent

Leupold made a scope called the Pioneer with no adjustments for windage and elevation. The mounts were meant
to be used for scopes like that.

If I recall correctly to adjust the elevation, you had to remove the scope and turn a screw in the base, hence the elaborate structure
of the rings.