Figs. 1,055 and 1,056.—Willard plates; [fig. 1,055], negative plates; [fig. 1,056], positive plates. Both positive and negative plates are of the Planté type, made from one integral piece of rolled lead. These are grooved plates. The projections are tapered, that is, they are wider at the base than at the surface, for strength. The center web of each positive plate is tapered from the top of the plate downward to secure uniform distribution of the current all over the surface of the plate.
Fig. 1,057.—Wood separator for spacing the plates, as used in the Willard storage cells.
Fig. 1,058.—Positive plate.