. The Iron and steel magazine. 287 28S The Iron and Steel Magazine 794,201. Centrifugal Gas-Purifying Apparatus. — EdwardTheisen, Baden-Baden, Germany. 794,386. Furnace-Charging Apparatus. — Ralph Baggaley,Pittsburg, Pa. 794,391. Furnace-Charging Device. — John J. Boax, McKees-port. Pa., assignor to National Tube Company, Pittsburg, Pa., a corpora-tion of New Jersey. GREAT BRITAIN 11,43 7 of 1904. Briquetting Iron Ores. — E. Goldschmid, Frank-fort, Germany. Heating friable iron ores in a water-gas furnace in orderto obtain coherent masses suitable for smelting. 12,367. Gas-Producer. — Alfred B
. The Iron and steel magazine. 287 28S The Iron and Steel Magazine 794,201. Centrifugal Gas-Purifying Apparatus. — EdwardTheisen, Baden-Baden, Germany. 794,386. Furnace-Charging Apparatus. — Ralph Baggaley,Pittsburg, Pa. 794,391. Furnace-Charging Device. — John J. Boax, McKees-port. Pa., assignor to National Tube Company, Pittsburg, Pa., a corpora-tion of New Jersey. GREAT BRITAIN 11,43 7 of 1904. Briquetting Iron Ores. — E. Goldschmid, Frank-fort, Germany. Heating friable iron ores in a water-gas furnace in orderto obtain coherent masses suitable for smelting. 12,367. Gas-Producer. — Alfred B. Dufif, Pittsburg, Pa. 13,594 of 1904. Dust Collecting. — B. H. Thwaite, T. J. Dennyand R. E. Commans, London. Collecting the dust given off at the work-ing faces of mines by means of powerful suction pipes. 411 of 1905. Smelting Iron Ore. — J. Gayley, New York. Insmelting iron ores with a dried-air blast, using much less coke than istheoretically required, the explanation of this economy not being SIR LOWTHIAN BELL SEE PAGE 354 Ag 9 The Iron and Steel Magazine Je veux au mond puhlier dune plume de fer sur un papier dacter. Vol. X October, 1905 No. 4 ELECTRIC STEEL* By F. W. HARBORD THHE great interest which the manufacture of steel in theelectric furnace has aroused, both amongst manufacturersand engineers in this country, and the fact that there is alreadyone electric furnace in Sheffield and that it is reported thatanother Sheffield company has acquired the exclusive patentrights of the well-known Heroult process for the British Isles,make it important that we should consider the possibilities ofelectric smelting relative to steel manufacture in England. While, on the one hand, the extravagant claims urged onbehalf of electric smelting — that it will revolutionize the manu-facture of structural steels as at present made by the Bessemerand open-hearth process — may be dismissed as nonsense, theattempts, on the other hand, to prove that it canno
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