The overbalanced cylinder
A cylinder containing a fluid with two or more weighted rods passing through stuffing boxes in the shell. To the middle of each of these rods is fixed a ball of cork which is expected to rise to the upper side of the cylinder whenever the revolution thereof brings it a little below the axis of the cylinder.
In thus rising, it will carry the upper weight away from the center and bring the lower end toward the center so that it is thought the center of gravity of cylinder arms, corks, and metallic balls will be kept constantly on one side of a geometrical center, and constant revolution will result. The fact is, however, that the center of gravity will remain always in a perpendicular drawn through the axis, and, consequently, the expectations of the inventor were never realized.
(Subsection 959, from p.385)
From: Gardner D. Hiscox, M.E., Mechanical Appliances and Novelties of Construction (1927), Norman W. Henley Publ. Co.