A flanged plate for a rolling-lobe air spring has on its rounded portion an annular, closed, concave, rounded holding recess which has a circular arcuate shape. Herein, the power introduction wire is branched to the number corresponding to the number of the cathodes between the matching box and the cathodes, and the branched wires are symmetrically extended. With regard to individual servings, beads of ice cream may be injected at a dispensing nozzle of a machine for dispensing soft-serve ice cream.