. The street railway review . ar. air for which is furnished by a Sturtevant steam fan, a Sturtevantinduced draft steam fan and a Sturtevant economizer to be in-stalled later. The company has in process of construction a 400-h. p. vertical compound engine with direct-connected sets, which will be the first of several units to be in-stalled in the engine room. Fer 20, 1904.] STREET RAILWAY 133 Insulated Joints for SOO-Volt Circuits. Uiic ot the serious objections wliidi the steam railroad men haveurged against the adoption o£ electric traction on existing steamlines is
. The street railway review . ar. air for which is furnished by a Sturtevant steam fan, a Sturtevantinduced draft steam fan and a Sturtevant economizer to be in-stalled later. The company has in process of construction a 400-h. p. vertical compound engine with direct-connected sets, which will be the first of several units to be in-stalled in the engine room. Fer 20, 1904.] STREET RAILWAY 133 Insulated Joints for SOO-Volt Circuits. Uiic ot the serious objections wliidi the steam railroad men haveurged against the adoption o£ electric traction on existing steamlines is that such a change would require that the signal systemsalready installed and operated by low voltage track circuits beabandoned. The of block signals on a portion of thesubway tracks operated by the Interborough Rapid Transit that this objection is not a valid one at the present time,whatever may have been the fact when it was first advanced. The Interborough company, on that portion 01 the line where. |-I,.\Ti:i) JOINT. block signals are used, uses one track rail only for the return cir-cuit while the other track rail is used for the signal circuit. Thetrack has \\el>er rail joints and on the >Tgiial track the insulatedjoints made by the Weber Railway Joint Manufacturing Co. andillustrated in the accompanying sectional drawing, are used. Thisjoint is, wc understand, successfully insulating the 500-volt currentwhich is used for railway operation. The rail is insulated from theshoe angle by a fiber angle plate and the bolt is insulated fromthe .siioe angle on the one side, and the splice bar on the other, bolt bushings, the outer surfaces of these bushings being cov-ered by metal washers. An insulated joint of similar type is used by a number of steamrailroads in connection with signal track circuits, but we believethis is the first application to electric railway work. Standard Indcrground Cable Co. Ihe annual meeting of the s
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
