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Scientific American, Vol. 27, No. 12 (1872) (1872)

leaf 3

An illustration from Scientific American, Vol. 27, No. 12 (1872), 1872, leaf 3
rgoes its first melting to its final exit into the Every year a large quantity of metal is reclaimed from the point of the blank is prevented from receiving any pressure, world in the shape of finished pens. water the workmen wash in, from their working clothes, as in such case it would be… … during.our inspection of the ingot, is now ready. The ma. of a hammer, tue object being to give them temper, elasti- other purposes requiring a handsome and durable stone. ‘chine is set in motion, and into it passes the bar of metal: city and hardness. They are then, placed under another When first…

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