. The Street railway journal . IlG. L-SIXGLE Wlkl-; HELD FIG. W IKES IX- BY WIRE HOLDERS KUI- TERC( )NNECTEn liY LOOSE IDLY SUPPORTED. LINKS by wire holders rigidly supported in the way which you knowfrom our short experimental line inspected by you when you find (Figs. 2) a single wire held with clamps, to whicha kind of lever is attached for securing the wire horizontally,while a spring made of steel wire, having some play vertically,supports the weight of the wire and takes up the hypotheticalblows, or the downward pressure, of the current collector,^ou will also find (Fig
. The Street railway journal . IlG. L-SIXGLE Wlkl-; HELD FIG. W IKES IX- BY WIRE HOLDERS KUI- TERC( )NNECTEn liY LOOSE IDLY SUPPORTED. LINKS by wire holders rigidly supported in the way which you knowfrom our short experimental line inspected by you when you find (Figs. 2) a single wire held with clamps, to whicha kind of lever is attached for securing the wire horizontally,while a spring made of steel wire, having some play vertically,supports the weight of the wire and takes up the hypotheticalblows, or the downward pressure, of the current collector,^ou will also find (Fig. 3) a pair of wires carried over the. FIG. WIRE HELD WITH CLAMPS WITH LEVER TOSECURE THE WIRE HORIZONTALLY poles with the two wires interconnected by loose links. Theinside wire is intended as the contact wire for the current col-lector, the outside wire as a reinforcement of the cross sectionor conductivity of the line. The outside wire, having a some-what greater sag, is less likely to break, and will therefore con-stitute a safety suspension for the inside wire in case the lattershould break near a support, it being then held above theground by the interconnecting links just mentioned. The sameprinciple of mutual safety suspension has been adopted forroad crossings of small importance (Fig. 6). You will alsofind two different forms of inverted catenary suspension,which have so far given excellent results (Figs. 4 and 5). Thissuspension has been used on about 5/4 km of length. Duringthese last days, when the weather was very cold, the trolley orcontact wire supported on these catenaries was so straight thatthe
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
