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Show - uu IRON OR STEEL RUST PROOFED Important Discovery Means Metals Resist Attack for Generations NEW YORK, Feb a Discoery of ja method by which iron and steel may be made rust proof, was announced Friday by Ur Miller Reese HutOhin-son HutOhin-son inventor and engineer in an ad-drags ad-drags before the alumni association or I Cooper Union ("hlef credit for tho ( discovery, which Is said to bo the I most Important In modern metallurgv. xros given to w b BallantSne, an English Eng-lish metallurgist. METHOD PERFECTED Dr. Hutchinson, who for many , years was Thomas A Edison s confidant confi-dant and chief engineer, explainod that the method makes steel and Iron en-jtlrely en-jtlrely rust proof and to a great extent ex-tent even acid proof. ' Imagine the value of a steel or Iron" he said. "possessing all the strength of ordinary steel or iron, but Which -:ni b left without attention for .generations of time and oven in the j most humid of climates. "This wonderful material is known to the metallurgical world as chromium. chrom-ium. It Is found In crude state In I many parts of the world and as chro-mltc chro-mltc ore Is reduced in an electric lur-nacc, lur-nacc, producing an alloy of Iron and chromium with from four to dght per cent of carbon In It. This high! carbon product has been commercially commercial-ly available for many years and Is used I Ifl the manufacture of automobile ax-' els. cutlery und other high carbon steel I j products to which the chromium; I Imparts great toughness. FOR SMALL AUTOS "Th production of rustless sheet 'Iron and wire and of low carbon steet, 'however, has proven heretofore om- jmerclally impracticable because of the I until now high cost of removing the carbon from the ferro-chrome of commerce. com-merce. "A large use to which this new ma- Iterial can be put Is In tho manufacture manufac-ture of a low-priced automobile which I will not have to be painted. There! Is no more attractive finish than thai jof burnished steel, which is imparted; 'to this material by the fabricating I I met t o.: " |