Watchmen's Time Detectors Operated by Batteries or Magneto Generators (1900)
Holtzer-Cabot Electric Company · Holtzer-Cabot Electric Company · leaf 126
full candle power, and the characteristicmm of the alternating arc will be at once loticed. There is no danger whatever in operating this apparatus, as all parts conveyingbe high pressure are shielded, and connection with the transformer is made only athe instant of actual contact with the material… … ■ _ 3[ ...■.»«,* ■ V ..I1(llIII„l,„||flNlllliM ;illlllHHIIlliHiltHlinilill»»IHiHtlllliUN.ihiHMi.»mlnn..i .THE HOLTZER-CABOT ELECTRIC COMPANY Boston. Mass. The H.-C. Alternating Current Potential Indicator
