er the fire which current drives the room uncomfortable) to material in a stream heat the incoming draft. through a small hole in This he does by conduc- the table, beneath which ting the air, through a receptacle to receive suitable compartments, the sand is placed. The to the boiler setting,… … the fire can be easily governed by a damper on the air supply BENDING HEAVY IRoN.—It is now possible, by the aid of hy- orifice, B. The immediate result is a cool fire room, since draulic machinery, to bend iron shafts of 12 inches in di- the Scientific American Patent Agency. For furvher particu-…
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