. Transactions. SECTIONTHROUGH C-C -1—1-0- Air Bath. BOTTOM PLAN END elevationDetails of Hot-Plate, Burner and Air-Bath. ered from the fire-room boiler to the steam-chest beneath thebath. The steam-chest is cast with the baths, and is connectedby pipes with the boiler after the manner of a radiator. Theheat is regulated by a steam-valve, the temperature in the bathdepending upon the pressure in the boiler and the amount ofsteam admitted to the steam-chest. The baths having, there-fore, only dry air, may be used for drying-ovens as well as forthe other purposes to which steam and air baths are


. Transactions. SECTIONTHROUGH C-C -1—1-0- Air Bath. BOTTOM PLAN END elevationDetails of Hot-Plate, Burner and Air-Bath. ered from the fire-room boiler to the steam-chest beneath thebath. The steam-chest is cast with the baths, and is connectedby pipes with the boiler after the manner of a radiator. Theheat is regulated by a steam-valve, the temperature in the bathdepending upon the pressure in the boiler and the amount ofsteam admitted to the steam-chest. The baths having, there-fore, only dry air, may be used for drying-ovens as well as forthe other purposes to which steam and air baths are adapted. I. fcBOR \ rOR! FOR Mii ILL! ROIC \i. CH BMIB1 aY. 1 28 All iron apparatus in the hoods is protected from the attack ofchemicals by an occasional application of graphite in the form Of BtOVe polish. Covers and rings for the baths are best made of porcelain,though strong asbestos board is a very satisfactory for the hot plates may be such as are described abovefor tin baths, or short Bunsen burners attached directly to th


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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries