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American Protective Tariff League

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The Iron Age 1885-12-31: Vol 36 Iss 27

1885 Reed Business Information US

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AND <LES, bp quot any ‘ice lis Gs. TY. ed yators, yy Ul, P / The Iron Age INDEX TO 2EADING MATTER A PAGE 30. Published Vol. XXXVI: No. New Emery-Wheel Tool Grinders. Ve illustrate on this page two new tool nders built by the Springfield Glue and nery-Wheel Co., of Springfield, Mass. irge emery-wheels, made especially water- wf, are used and arranged for grinding the front side of the wheel, or on both e front and back sides, thus enabling front back grinding, as may be desired. The yachines take up little room and are claimed make less dirt than ordinary grindstones, ind the workmen stand nearer the wheel, abling them to more closely watch the rk. The grade or coarseness of grit and ny degree of hardness can be regulated and lapted to the kind of work to be done. The emery-wheel is made of emery and corun- lum, crushed down*from large pieces by nproved machinery to give each grain the most possible cutting corners. The particles mposing the emery-wheel are sharp cut, ind, being five or six times harder than those of an ordinary grindstone, are claimed , do so much more work. Thus a grind- stone 3 feet in diameter, making 70 revolu- tions, gives 660 feet per minute of grinding surfa…

Citation

The Iron Age 1885-12-31: Vol 36 Iss 27. Reed Business Information US. 1885.