American telephone practice (1905) (14776283193)

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

Text Appearing Before Image:

FIG. 488.-PLAZA CENTRAL OFFICE BUILDING. cut to length and formed. Modern methods applied in this direc-tion permit practically all cable forming being done before the ap-paratus is shipped; even the longest cables being cut to length andformed to such a nicety as to fit exactly and without waste into thevarious cable runs in which they are to be placed. When it is considered that sometimes many hundred cables mustbe placed in a single runway, and that these cables must be piled incompact forms, a certain number in a layer and a certain number oflayers deep; that they must often in going from room to room orfrom floor to floor be led around rather complex curves so that

Text Appearing After Image:

676 AMERICAN TELEPHONE PRACTICE. some will be bent on a short radius and some on a long, the nicetyof detail in this work will be appreciated. A portion of a detailsheet showing the manner in which these cable plans are made isgiven in Fig. 487, this being taken from a drawing made for actualpractice. As already stated the various problems relating to the lay-out ofa large telephone central office equipment must be solved with re-gard to the conditions of each individual case. As it is impossibleto discuss in the space available all of the factors in such a problem,this chapter will conclude with a brief description of two moderncentral office equipments which are thought to represent present goodengineering practice. In Fig. 488 is shown a view of the Plaza central office buildingof the New York Telephone Company, this office having been putinto commission about two years ago. This view, while showingthe general appearance of the building, shows also much of its inte-rior arrangement

1890 s architecture in new york city american telephone practice 1905 floor plans of the united states telephone exchanges in new york city verizon western electric switchboards book illustrations high resolution images from internet archive library of congress architectural diagrams floor plans

1905

Library of Congress

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