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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eir appropriate terminals on the arresters. The connections ofthe street and switch-board cables are thus as far as possible madepermanent. The jumper wires are each led through a hole, 13, inthe upper part of the horizontal wooden strip, 8, its ends beingsecured to the upper portion of the connectors, m and n, as shownin Fig. 454. The pair is then led in a horizontal direction along thetop of the bars, 6, on the line side of the frame until a point isreached opposite the vertical strip on which the desired switch-board terminal is located. It is then led through an eye or ring, r,and through holes, 17, in the vertical strip, 11, and attached to theproper pair of terminals on the arrester through which the connec-tion is made with the switch-board wires. A distributing frame built upon this general plan is shown inFigs. 455 and 456, these being views of the frame in the main ex-change of the Bell Company at St. Louis, Mo. The line cables approach the frame under a false floor, ami are
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620 DISTRIBUTING FRAMES. 621 accessible through trap-doors, as may be seen in Fig. 455. Theyare fanned out on the horizontal side of the distributing frame, asshown in this figure. The terminals on the line side are numberedwith respect to the wires in the cables to which they belong. Onthe vertical side of this board, which is shown in Fig. 456, are placedthe arresters, to which lead the wires from the switch-board cables.The jumper wires connecting the horizontal with the vertical sidesare arranged as already described. In the Independent field a distributing frame has recently comeinto extensive use similar to the Ford & Lenfest frame, butdiffering from it in that the line side terminals are mounted invertical instead of horizontal rows, and are divided into shortlengths, thus affording arm space between them for reaching into thehorizontal jumper runs. A single section of this frame with its linestrip divided into five short strips of twenty terminals each is shownat the left

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