. The Iron and steel magazine. spongy iron formed. 27,839 of 1904. Utilizing Cupola Gases. — A. Bayot, Marly,.France. Arrangement of pipes so as to catch the gases such as carbonmonoxide and carbohydrates given off from foundry cupolas and utilizingthem for heating the cupolas. 9,836 of 1904. Coating Iron. — A. Levy, Paris, France. Formingpermanent protective coverings for iron by first coating with zinc andafterward with tin, lead or copper. 12,817 of 1904. Tempering Steel. — S. N. Brayshaw, high-speed tool steel, by first heating in furnace, then quench-ing in a bath kep
. The Iron and steel magazine. spongy iron formed. 27,839 of 1904. Utilizing Cupola Gases. — A. Bayot, Marly,.France. Arrangement of pipes so as to catch the gases such as carbonmonoxide and carbohydrates given off from foundry cupolas and utilizingthem for heating the cupolas. 9,836 of 1904. Coating Iron. — A. Levy, Paris, France. Formingpermanent protective coverings for iron by first coating with zinc andafterward with tin, lead or copper. 12,817 of 1904. Tempering Steel. — S. N. Brayshaw, high-speed tool steel, by first heating in furnace, then quench-ing in a bath kept at about 800° C. and afterward quenching in water. 16,214 of 1904. Removing Phosphorus from Iron Ore. — and J. B. Ballantine, London. Removing phosphorus fromfinely ground iron ores by leaching out with dilute acid solutions. 16,276 of 1904. Steel Making. — W. Kaufman, Vienna, and , Grenoble, France. Improved method of introducing carbideof silicon into steel, so that it shall not be R. W. RAYMOND SEE PAGE 250 The Iron and Steel Magazine Je veux au mond publicr dune plume de fer sur un papier dacicr. Vol. X September, 1905 No. 3 DESCRIPTIVE METALLURGY OF IRON AND STEEL * By SAMUEL GROVESIXTRODUCTORY TX the primitive ages, when our ancestors dwelt in caves, theyhunted the buffalo and the bear with bow and arrow andspear, tipped with sharpened flints and stones. It was thisunique faculty of being able to invent and form tools and weaponsof defense that gave man dominion over the fowls of the air,the fish of the sea and everything that creepeth on the face ofthe earth. Moreover, this capacity to give new shape andform to existing materials makes an absolute line of demarka-tion between man and the lower animals. Monkeys will throwdown cocoanuts from the trees, then pick up a stone and crackthe shells; but they always take something ready to their hand— never make a hammer, hatchet or knife. Elephants teardown branches from the forest
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectiron, bookyear1898
