. The Street railway journal . thetrolley-wheel contact has ceased. The spring draws thesignal along behind at a somewhat slower rate. The con-nection-changing device consists of three contact rings onthe shaft insulated by hard fibre, on which the copperbrushes bear. STOPPING GENERATOR SPARKING In the power house of this company is a G. E. 360-amp.,550-volt multipolar generator, direct-connected to its en-gine and running 200 r. p. m. Much trouble was expe-rienced with this machine from sparking, until sheet-ironbridges, 3-32 in. thick, were put between pole tips. Thebrushes were also reduced
. The Street railway journal . thetrolley-wheel contact has ceased. The spring draws thesignal along behind at a somewhat slower rate. The con-nection-changing device consists of three contact rings onthe shaft insulated by hard fibre, on which the copperbrushes bear. STOPPING GENERATOR SPARKING In the power house of this company is a G. E. 360-amp.,550-volt multipolar generator, direct-connected to its en-gine and running 200 r. p. m. Much trouble was expe-rienced with this machine from sparking, until sheet-ironbridges, 3-32 in. thick, were put between pole tips. Thebrushes were also reduced in thickness from f in. to i in. dirt around the bottom of the pole is removed. Then abox of 2-in. plank, 10 ft. long, is put around the pole tosupply the strength taken away by the rotting of the the top the plank box is neatly beveled ofif. The planksare painted with tar and asphaltum. The plank costs onlyabout one-third what a pole would and costs less to square poles are used the plan is a considerable.
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Keywords: ., bookcentury1800, bookdecade1880, bookidstreetrailwa, bookyear1884
