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American telephone practice (1905)

Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 829

An illustration from American telephone practice, 1905, leaf 829
affin, hav-ing relatively low specific capacity. Such cables were once largelvused, being known as saturated paper cables. It was found that by aerating the paraffin thus used in saturatedcables with dry carbolic acid gas, the electrostatic capacity betweenthe conductors was reduced as much as 15… … FIG. 591.—DRY-CORE PAPER CABLE. country by wrapping the separate conductors with two layers ofdry paper loosely laid on. Some times only a single wrapping isused. Two wires thus insulated are formed into a twisted pair,the length of a complete twist being about three inches. Thesepairs are formed…

Telephone

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