Cyclopedia of architecture, carpentry, and building : a general reference work (1912)
American Technical Society · Chicago : American Technical Society · leaf 148
Fig. 20. Sectional View of Multiple-Glower Westinghouse Nernst Lamp. 116 ELECTHK LKJUTINO LTJ Tin- liratiii)^ (Kvicf is coim<<tt«l across ihe firciiit when tin* lampis first tiinirtl on, antl it must Ik- cut out of circuit after the flowersbecome coutluctors in order to save the enep/v…
Architecture · Building
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