Aluminum electrolytic cells
 Electromagnetic effects are optimized in a rectangular aluminum reduction cell arranged in series in a row of such cells with the cathode collector bars thereof extending through the cell cathode parallel to the row length by utilizing generally L-shaped cathode bus bars connecting the upstream ends of the cathode collector bars to line bus bars adjacent the cell ends, the L-shaped cathode bus bars each having one leg extending from its connectors with the upstream ends of at least one cathode collector bar beneath the cell to approximately the longitudinal cell axis and the other leg extending to the right or left generally along said longitudinal cell axis to connect with a line bus bar. The downstream ends of the cathode collector bars are arranged in conventional fashion. The present arrangement minimizes wave formation in the aluminum layer and promotes circulation of the electrolytic bath. 
Nippon Light Metal Company Limited
C
C25C
inventional
Kimihiko Shoji Masahiko
Kato Yamamoto Eki