- features of these shops is the perfection of all the making the Swan incandescent lamp. tured. The parts are made by means of hardened machinery in use. Everything is made of the best On entering the long apartment devoted to the jigs and fitted together with exact nicety. All this material and… … noticed is the manufacture of the armature. This ture requires a specific number of convolutions for its OFFICE. successful working; and all calculations as to the was" formerly made of cast iron. But that method work undergoes rigid inspection before going to the length of the wire must be exact…
Patented · Patents · Contained · Munn · Scientific American · Address · Fly wheel · York belting · Address munn · American supplement · Brush electric · Letters patent · Express money · Hot air · Wagon box
Internet Archive · Public domain (published before 1931). Free to use for anything.
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