Chemical engineering . entrained globules of the electrolyte and to get overcertain difficulties apparent in his previous construction, de-scribed in Electrochemical , Vol. III., p. 000. Thevalve is made of glass, with a hollow spherical head and a pro-jection for centering it in its scat. It is so proportioned asto float on the solution accumulating about it. but with solittle buoyancy that it does not begin to float until the accumu-lation of liquid is considerable. The excess of liquid thenflows back into the cell, which it could not do with the previousconstruction, as the latter
Chemical engineering . entrained globules of the electrolyte and to get overcertain difficulties apparent in his previous construction, de-scribed in Electrochemical , Vol. III., p. 000. Thevalve is made of glass, with a hollow spherical head and a pro-jection for centering it in its scat. It is so proportioned asto float on the solution accumulating about it. but with solittle buoyancy that it does not begin to float until the accumu-lation of liquid is considerable. The excess of liquid thenflows back into the cell, which it could not do with the previousconstruction, as the latter closed too quickly. Storage Battery Plate.—C. H. Whiting, New York. Patent789,514, May 9, 1905. Application filed June 25, plate, as shown in Fig. 4, is of rectangular form, andis preferably made of thin metal, cast, stamped or other-wise shaped into form. It has an upper end piece a. whichfurnished a support for the strips b which extend from strip has a number of perforations, which serve for ap-. > y-> FIG. 4.—B.\TTERY PL.\TE. plying the active mass, which, when spread on the two faces 01each strip, passes through the openings and is thereby held inplace. This is furthered by the arrangement of ribs d aroundthe end piece a and each strip b, which, moreover, strengthensthe plate and adds to its rigidity when it is made of thinmaterial. The depending strips are fully separated from eachother by an intervening slot e, which extends from the loweredge of the end piece a the full length of the strips. On ac-count of this sub-division of theplate the expansion and contractionof the active material on one .stripwill not be transmitted to another,but will extend only over each in-dividual strip. The expansion andcontraction is, therefore, greatly re-duced on such a plate, as comparedwith a plate in which the body is inone piece. Cross-ties f connect thevarious strips to each other at suit-able intervals, thus preventing theplate from curving or bending, s
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