cession the entire length of the oven, at the speed of 12 feet leaving an air space or dead air chamber between a wire cov- the annulus may continue 7 or 8 seconds,being formed about in one minute, falling from one belt to another, and finally ering and the surface covered; second, in the keying of… … be desired. tank, and the coal, perfectly dry ASHCBOFT'S BOILEB COVEBING- There are many objections to and waterproof, is carried up applying a covering direct to the surface of the boiler, for it by a chain elevator, and discharged on another wire cloth ish Columbia, calculation gives a large…
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