. The street railway review . o Street RailroadCompanv ; three men were badlv burned bv the explosion ofoil tanks back of the building. The explosion was causedbv gas, which had been formed from the escaping oil, becom-ing ignited from torches in the hands of the men who wereengaged in repairing a leak in one of the feed pipes. Twoempty oil tank cars on the siding were slightly damaged andsome sheds destrovcd, but bevond this no damage was doneto propertv. STEEL PLATE FLY WHEELS AT BOSTON. Xo fl) wheel, whatever its construction, can withstandwith certainty a speed greatly in excess of the rat
. The street railway review . o Street RailroadCompanv ; three men were badlv burned bv the explosion ofoil tanks back of the building. The explosion was causedbv gas, which had been formed from the escaping oil, becom-ing ignited from torches in the hands of the men who wereengaged in repairing a leak in one of the feed pipes. Twoempty oil tank cars on the siding were slightly damaged andsome sheds destrovcd, but bevond this no damage was doneto propertv. STEEL PLATE FLY WHEELS AT BOSTON. Xo fl) wheel, whatever its construction, can withstandwith certainty a speed greatly in excess of the rated speedof its engine, but in view of the accidents of the last fewvears it is certainly desirable to have fly wheels with greaterfactors of safetv than the usual cast iron wheel. Such factorof safety, for example, as is furnished by a steel or wroughtiron structure. The West End Street Railway of Bostonat the time it changed its largest power station from a beltedto a direct driven plant adopted a plate flv wheel built up of. steel plates. This construction i>f wheel, which was furnishedby the E. V. Allis Company of Milwaukee, has also beenput in the new Charlestown station of the West End hub of this type of wheel is cast iron, that being theoidy iron in the wheel. In place of spokes the wheelhas two steel plates, as shown in the accompanying diagramgiving a cross section through half the wheel, and between the plates is provided a brace as shown. The rim is madeup of steel plates with joints alternating. Each plate is iinch thick and overlaps the 7 joints of other plates. Out-
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
