Factory and industrial management . m itthe particles of alkaline carbon-ates which might be extra precaution, care is ob-served to place at E, betweentwo perforated plates of metal,an asbestos composition forminga third filter which removesevery trace of solid particles. The ordinary charge is 250grammes of peroxide of sodium and potassium, which is heldbetween the perforated dia-phragms g, h; but as there is atendency for the mass to swellwith the progress of the chem-ical combinations, and as thiswould interfere greatly with thefree circulation of air in the ap-paratus, perfora
Factory and industrial management . m itthe particles of alkaline carbon-ates which might be extra precaution, care is ob-served to place at E, betweentwo perforated plates of metal,an asbestos composition forminga third filter which removesevery trace of solid particles. The ordinary charge is 250grammes of peroxide of sodium and potassium, which is heldbetween the perforated dia-phragms g, h; but as there is atendency for the mass to swellwith the progress of the chem-ical combinations, and as thiswould interfere greatly with thefree circulation of air in the ap-paratus, perforated frames C x^are placed at various heightswithin the body of the appara-tus, thus preventing the difficul-ty. Finally, as the apparatusbecomes considerably heated bythe reaction, it is provided withan exterior insulating jacketwith air circulation. The appa-ratus, as shown in Figure 5,is carried upon the chest; car-riage on the back is discarded inorder to avoid the long stretches of tubing, which almost always be-come FIG. SECTION OF THE RESERVOIR OFTHE PNEUMATOGENE. 10 TUB ENGINEERINC MAGAZIKR.
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Keywords: ., bookcentury1800, bookdecade1890, booksubj, booksubjectengineering
