. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . DOUBLE HI-:. ILLT. rings are practically converted intoplugs. When the valves are workingwithout steam pressure, the Snap ringsarc at liberty to adjust themselves tothe cage, the same as ordinary Snaprings do. The valve is, therefore. .1plug while working under steam, but a. SECTION OF THE SEMI-PLUG V.\LVE. ing; it also compels the two Snap ringsto expand or contract together, and thissupplies a means of passing over steamports, when the engine is drifting, with-out allowing the
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . DOUBLE HI-:. ILLT. rings are practically converted intoplugs. When the valves are workingwithout steam pressure, the Snap ringsarc at liberty to adjust themselves tothe cage, the same as ordinary Snaprings do. The valve is, therefore. .1plug while working under steam, but a. SECTION OF THE SEMI-PLUG V.\LVE. ing; it also compels the two Snap ringsto expand or contract together, and thissupplies a means of passing over steamports, when the engine is drifting, with-out allowing the Snap ring to springinto the port. Now when the valve is working understeam, the pressure by the system ofcones made by beveling the sides of the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
