Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 167
Fig. 38. Enclosed Arc Lamp with Carboii-Feetl Mechanism. globe surrounds the arc, and this globe is covered with a cap whichrenders it nearly air-tight. Fig. 38 is a good example of an enclosedarc as manufactured by the General Electric Company. Direct=Current Arcs. Open Types of Arcs for…
Architecture · Building
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