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Theory and practice of the electric telegraph; a manual for operators and students (1875)
Churchill, Charles Henry, d. 1904. [from old catalog] · Oberlin, Ohio, Sherman & bros. · leaf 150
ay abrade it. Nor shouldthe office wire be spliced if it can be avoided, but if splicedit should be soldered. The line wire should be well support-ed by an insulator at the point where it enters the office andthe entrance should be made through a glass or hard rubbertube inclining downward on the… … (> ,-©00030 ^00- LBTelegraph
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