Chemical engineering . l and in other corres-ponding metallurgical oper-ations.) Fig. 2 shows thefurnace with the circulartank at the bottom. Ex-tending from one side ofthe tank, and in an upwarddirection, is a flue in formof a series of communicat-ing inclined and verticalpassages. Each vertical pas-sage is divided into twocompartments, the outer oneforming a by-path for theproducts of combustion,which flow to the chimneyflue, while the inner com-partment forms the connec-tion between two succeedinginclined passages. Thisinner compartment con-tains the electrodes for thearcs (indicated in Fig
Chemical engineering . l and in other corres-ponding metallurgical oper-ations.) Fig. 2 shows thefurnace with the circulartank at the bottom. Ex-tending from one side ofthe tank, and in an upwarddirection, is a flue in formof a series of communicat-ing inclined and verticalpassages. Each vertical pas-sage is divided into twocompartments, the outer oneforming a by-path for theproducts of combustion,which flow to the chimneyflue, while the inner com-partment forms the connec-tion between two succeedinginclined passages. Thisinner compartment con-tains the electrodes for thearcs (indicated in Fig. 2 by small cir-cles.) The glass-making materials drop down through the arcs, and are acted upon bythe same. Sand is fed into the furnace through the hopper atthe top and passes downward through the flue. Just before itreaches a vertical passage, fluxes, lime, etc., are fed through thehoppers, specially provided for this purpose, as shown in theillustration. The mixture then drops downward through the. FIG. 2.—CL,\SS FURX.\CE, 392 ELECTROCHEMICAL AND .METALLURGICAL INDUSTRY. [ III. No. lo. .ires. On account of the provision of the outer compartmentsof the vertical passages, which form a by-path for the pro-(hicts of combustion, the liglit materials in the form of flu.\esare not subjected at the time of their introduction into thefflmacc to the carrying action of flames or air currents. —Carl Hering, 798,790, Sept. 5. Applica-tion filed July 13, 1901. Any electrolytic action disturbs the equilibrium which ex-isted before in the electrolyte. Inmany cases the products ofelectrolytic action pass into or combine with the electrolyteand then participate in the conduction of the current; this mayresult in undesired reactions. To prevent such objectionableingredients from accumulating in the electrolyte, the inventorcatches the ions which would produce them at the electrodes inform of an insoluble compound. It may be that
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