. The Street railway journal . ystemof contact following this section can readily be arrangement of the line is very advantageous from thestandpoint of solidity of construction and ease of is possible when necessity arises to provide massive supportsunder the contact wires adapted to the high tension without in-terfering with the current-collector, because the latter makescontact from above. For the same reason the construction isless liable to sleet troubles, the sleet being generally thickeron the underside of the line wire. Finally it is possible to install tw
. The Street railway journal . ystemof contact following this section can readily be arrangement of the line is very advantageous from thestandpoint of solidity of construction and ease of is possible when necessity arises to provide massive supportsunder the contact wires adapted to the high tension without in-terfering with the current-collector, because the latter makescontact from above. For the same reason the construction isless liable to sleet troubles, the sleet being generally thickeron the underside of the line wire. Finally it is possible to install two contact lines on a singletrack, one on each side of the track and to take current fromone or the other wire, according to circumstances. One sectioncan be repaired while the other is in operation and the repairwork can be carried on without interrupting the servicebecause the line is arranged on the side and does not interferewith the rolling stock. The locomotives ought to have thenfour contact-collectors, two on each FIG. 16.—PASSING FROM ONE SECTION TO ANOTHER For double track lines it is not necessary to have two inde-pendent lines of contact for each. It suffices to have for eachtrack a single lateral line arranged as shown in Fig. 3 Thespace between the tracks is not sufficient for the installationof poles for the support of a line of contact and transversesuspension above the tracks is not to be recommended. It istherefore preferable to have two lines of lateral contact, oneon either side of the track which form a sufficient reserveupon one another, being mechanically and electrically com-pletely independent. It is not difficult to conceive of arrange-ments permitting in case of accident on one section of a con-tact line to continuing operating on the other track, using thecurrent on the other line. In closing the description and discussion of this new systemof current collection, the writer wishes to again call attentionto the facilities which this system off
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
