. Science of railways . 8. Split followers should be firmly held together by thecoil spring. 9. Coil springs when compressed should exert the fol-lowing pressure: Against packing li/>-inch rod, 45 lbs.; 2-inchrod, 55 lbs.; 2i/>-inch rod, 65 lbs.; 3-inch rod, 80 lbs.; 3V^-inchrod, 85 lbs.; 4-inch rod, 100 lbs.; 4i.^-inch rod, 110 lbs. CRESCENT METALLIC PACKING Prom the illustrations it will be noted that this pack-ing has no ball joint or vibrating cup, both of which parts 394 LOCOMOTIVE APPLIANCES. are used generally with standard metallic packing, and, it isclaimed, are the cause of the
. Science of railways . 8. Split followers should be firmly held together by thecoil spring. 9. Coil springs when compressed should exert the fol-lowing pressure: Against packing li/>-inch rod, 45 lbs.; 2-inchrod, 55 lbs.; 2i/>-inch rod, 65 lbs.; 3-inch rod, 80 lbs.; 3V^-inchrod, 85 lbs.; 4-inch rod, 100 lbs.; 4i.^-inch rod, 110 lbs. CRESCENT METALLIC PACKING Prom the illustrations it will be noted that this pack-ing has no ball joint or vibrating cup, both of which parts 394 LOCOMOTIVE APPLIANCES. are used generally with standard metallic packing, and, it isclaimed, are the cause of the greater part of the steamleaks. The form of the Crescent white metal segments needs no
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidscienceofrailway14kirk
