Larson and Taylor
Water filled crystal ball structure with driven steel balls
 This construction is one type of water filled crystal ball with driven steel balls. The main parts include, a water filled crystal ball and fixed base. On the top periphery of this round fixed base is placed a continuous track. This track is filled with steel balls. On the bottom face of the above mentioned fixed base is a rotatable flexible base which is driven by a music box spindle located in the fixed flexible base. The rotation of this base, causes the rotation and thus movement of the above mentioned steel balls which circulate within the track. Decorative objects then move within the space above the fixed base. 
G
G09F
inventional
Jian Ho
Liu