. BSTJ 1: 1. July 1922: Philadelphia-Pittsburgh Section of the New York-Chicago Cable. (Pilliod, James J.) . m, many thousands of poleswere broken and even where a few poles remained standing due tospecially strong construction, the load of ice combined with the windwas too great for the wires to withstand. There is therefore a prac-tical limit to the number of wires that can be safely and economicallycarried on a pole line. Where the practicable routes for pole lines are limited, where the A£// YORK-CHICAGO CABLE 65 existing pole lines are fully loaded, and where estimated future circuitrequi
. BSTJ 1: 1. July 1922: Philadelphia-Pittsburgh Section of the New York-Chicago Cable. (Pilliod, James J.) . m, many thousands of poleswere broken and even where a few poles remained standing due tospecially strong construction, the load of ice combined with the windwas too great for the wires to withstand. There is therefore a prac-tical limit to the number of wires that can be safely and economicallycarried on a pole line. Where the practicable routes for pole lines are limited, where the A£// YORK-CHICAGO CABLE 65 existing pole lines are fully loaded, and where estimated future circuitrequirements are of considerable magnitude, it is obvious that differentmethods of providing facilities, if available, must sooner or laterbe given serious consideration. The conditions between Phila-delphia and Pittsburgh and in general along all of the cable routesshown on Fig. 1 are now, or are expected within a few years to be,such as to make the use of some type of construction other than aerialwire desirable for most of the circuits. After careful studies of the circuit requirements for future periods. Fig. 4—Section of New York-Boston Main Line Showing Wires Heavily Loaded withIce. November 28, 1921 and of the methods available for providing long-distance telephonefacilities, which in general are aerial wire and cable, it has been decidedthat for relief in these sections the cable method will give the bestand most economical results. Long underground cables, as is well-known, have been in operation for many years between Boston, NewYork, Philadelphia, Baltimore and Washington, Chicago and Mil-waukee and in other sections. However, the type of cable and asso-ciated apparatus which is now being used in the development of themore comprehensive plan is quite different from that originally usedbetween Boston and Washington and in the other sections, particu-larly in the use of copper conductors of a smaller gage combinedwith improved loading coils, the vacuum tube telephone rep
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttelepho, bookyear1922
