File:American telephone practice (1905) (14756402975).jpg

Identifier: americantelepho00mill (find matches)
Title: American telephone practice
Year: 1905 (1900s)
Authors: Miller, Kempster B. (from old catalog)
Subjects:
Publisher:
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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Text Appearing Before Image:
underground cables may be seen inthe lower right hand corner of the picture, these entering the base-ment of the building from the subways. These cables are each ledinto the building and up to the second floor through an individualiron duct, thus doing away with the ordinary cable shaft for leadingthese cables from the cable vault to the terminal room. At aboutthe floor line of the second floor the underground cables are con-nected, by means of pot-heads, to rubber covered cables leading to the distributing board. These pot-head joints are concealed under afalse floor in that portion of the room. The doing away with the open cable shaft and substituting there-for the individual iron ducts is a great advantage from the stand-point of fire hazard, and also is advantageous from a mechanicalstandpoint, there being much less liability to damage the cables thanthere is with the use of an open cable shaft with its numerous cableclamps. These iron ducts are built into the wall of the building
Text Appearing After Image:
677

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