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Scientific American, Vol. 56, No. 17 (1887) (1887)

leaf 7

An illustration from Scientific American, Vol. 56, No. 17 (1887), 1887, leaf 7
the position of the wire | wire, the layer of oxide formed on the surface of the| the iron wire to successive bendings in all directions to on the armature, and the inner and outer coils are‘ red-hot metal has to be removed by passing it through | break the scale of oxide. This was effected by… … layer of the first coil, the oval, by cylinders arrang- winding is continued, ed like those of universal wire is cut, leaving a projecting end about 4 ical, but based on another order of ideas. inches long. The colored or inner end of He siretches the wire while still hot to its the wire is now…

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