Abstract: Apparatus is disclosed for selectively electroplating continuous longitudinally extending stripes or lines onto continuous metal base strip.

Abstract: An electrolytic cell for recovering from electrolytes metals, the ionic species of which are present at relatively low concentration. The cell comprises a container for the electrolyte, and and an electrode assembly in the container comprising (1) a tub-tubular sparger, having a central axial cavity bounded by an electrolyte-permeable cylindrical wall, and having an opening for receiving flow of the electrolyte into the central cavity and being otherwise closed, whereby the electrolyte flows radially from the sparger through the cylindrical wall; (2) a first electrolyte-permeable, high surface area electrode, coaxially surrounding the sparger to receive the flow therefrom; (3) an electrically insulating electrolyte-permeable spacer being coaxial with and surrounding the first electrode; and (4) a second electrolyte-permeable electrode being coaxial with the first electrode and contacting the insulating spacer at the side opposed to the first electrode, for receiving and passing the continuing radial flow.