. The Street railway journal . FIG. 9.—CROSS-SPAN MAIN-LINE SUSPENSION 1 1 . 1* ^ f f\ ^- .. ..■ . .. FIG. CATENARY, SECTION-BREAK INSULATOR FIG. SUSPENSION AND STEADY STRAIN April i, 1905.] STREET RAILWAY JOURNAL. 609 for expansion and contraction. The hangers are stiff and, beingplaced only 10 ft. apart, correct any tendency of the groovedtrolley wire to twist. This insures that the smooth lower sur-face will always be downward, a feature especially necessary

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884