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Scientific American, Vol. 90, No. 18 (April 1904) (1904)

leaf 8

An illustration from Scientific American, Vol. 90, No. 18 (April 1904), 1904, leaf 8
1 *^^ UtIHE i\ vr - —M 1 JL*UUU m The Tempering Furnace. … Polishing the Cut Glass. pulleys. Fine sharp clean sand and water are allowedto drip on the wheel from a cone-shaped bucket. Thearticle is pressed against the rapidly-rotating wheel,and is deeply scored or cut. The heaviest and princi-pal lines in the pattern are roughed-in by these steelwheels and…

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