. American engineer and railroad journal . ZEHNDER AUTOMATIC RELIEF VALVE. FIG. 2—SECTIONAl VIEW OF early closure. The tension of spring 7 shouldbe adjusted to give just sufficient compres-sion to. properly cushion the piston. Indrifting, valve 6 opens and relieves the vac-uum that otherwise would be formed. Valve3 prevents excessive pressure in the cylin-der, the spring 4 being adjusted to resist apressure slightly above boiler pressure. Theauxiliary attachment, 12, is provided forlubricating cylinders in the event of thefailure of the regular lubricating devices ora break-down nec
. American engineer and railroad journal . ZEHNDER AUTOMATIC RELIEF VALVE. FIG. 2—SECTIONAl VIEW OF early closure. The tension of spring 7 shouldbe adjusted to give just sufficient compres-sion to. properly cushion the piston. Indrifting, valve 6 opens and relieves the vac-uum that otherwise would be formed. Valve3 prevents excessive pressure in the cylin-der, the spring 4 being adjusted to resist apressure slightly above boiler pressure. Theauxiliary attachment, 12, is provided forlubricating cylinders in the event of thefailure of the regular lubricating devices ora break-down necessitating the blocking ofthe steam valve, but permitting the mainrod being left up. These valves are nowbeing put on the market by C. F. Beckwith& Co., of Scranton, Penn., as general agentsfor the Zehnder valves. Detailed informa-tion will be furnished on application. no. 1. A high-speed run was recently made uponthe Aurora, Elgin & Chicago third-rail elec-tric railway which is said to be a record-breaker for electric railroad practice. Asingle-motor car made a special run, undeiregular traffic c
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
