File:The Street railway journal (1905) (14574329410).jpg

Identifier: streetrailwayj251905newy (find matches)
Title: The Street railway journal
Year: 1884 (1880s)
Authors:
Subjects: Street-railroads Electric railroads Transportation
Publisher: New York : McGraw Pub. Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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rated in Fig. 3, there being a pair ofwires which are interconnected by loose links. The object is,obviously, to make provision for supporting the ends of one of 40 m to 70 m, according to the width of the crossing, has itsconnection with the source of electricity controlled by thegates in such manner that this short section is connected withthe line wire only when the gates are closed and when a trainis passing, it being entirely disconnected and dead when thegates are open, at which time the current passes through ashort auxiliary line which is specially installed over the street April 8, 1905.) STREET RAILWAY JOURNAL. 649 crossing. The cost of an ordinary street crossing, snch assliown in Fig. 6, is estimated at Frs. 600. The cost of a streetcrossing such as shown in Fig. 7 is estimated at Frs. 1,300. Fig. 8 shows the line contact construction at a station, overswitches and side-tracks. In this case the line construction issuch that the current collector makes contact partly above.
Text Appearing After Image:
FIG. 9.—ILLUSTRATING AN INSTANCE WHERE A GOOD BRIDGECLEARANCE MAKES UNNECESSARY THE SHIFTING OF THECURRENT COLLECTOR PIVOT partly at the side and partly under the contact wire. It isproper to emphasize, at this point, the fact that while the Hubersystem is designed to permit the collector to take currentfrom the contact wire, by touching it either below, on theside or above, the top contact is preferable and is the normalmethod. The collection of current from the side or from below thecontact wire is to be regarded as being, in reality, only an ex-pedient, made desirable, necessary or indispensalile, by certainconditions, especially limited clearance or space for trolley

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