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Scientific American, Vol. 22, No. 9 (1870) (1870)

leaf 7

An illustration from Scientific American, Vol. 22, No. 9 (1870), 1870, leaf 7
In order to do this the cards are sorted and arranged in duce the pigsand bars of tin. A test furnace need not be ant particular, that the drilling table turns(from a horizontal small lots, until the proper thicknesses are secured. They are very expensive, and this question, if decided… … 1 dangerous; safety valves out of order and overloaded, 22— 1st. Turning, as above described, for angular drilling. varying from 5 to + %5; boilers without gages, 2—2 dan- A BALTIMORE gentleman has converted the root of his 2d. Turnin® on its own center while in any position. gerous ; cases of…

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