Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 253
he gas is taken from the combustion chamber of the boiler, not less than 9 feet back of the bridge wall, by the connection marked "61." It then passes through the filter marked "56," which is a brass filter case packed with excelsior; this takes the coarse particles of soot from the gas. From this… … wall of the glass tube. This gauze tube is packed with cotton, wool, and the passage of the gas through it removes the remaining particles of dirt. The gas then passes to the filter marked 45, wThich is a glass tube filled with calcium chloride; the passage of the gas around the lumps of chloride…
Engineering
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