[Trade Journal] Publication: The Telegrapher New York, NY, United States |
Brooks' Improved Insulators.
THE Michigan Central Railroad Company are replacing the glass and bracket insulators on their telegraph lines with the Brooks patent - the screw shank - the kind that MOSES G. FARMER says gives a resistance in rain of "one hundred thousand megohms per insulator." |
Keywords: | David Brooks |
Researcher notes: | |
Supplemental information: | |
Researcher: | Bob Stahr |
Date completed: | September 5, 2005 by: Elton Gish; |