. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . Ex t er/o r //e* fnter/or V/enr. PLATE 19NEW TYPE GAUGE-COCKS When the necessary repairs have been completed, re-place valve C, loosen up on the coupling nut and adjustthe squares so that the letters OO are in line with eachother. The gauge-cock can then be operated in the usualway. This type of gauge is also provided with a rubbercentral valve-seat, which tends to keep the cock per- WATER-GLASS GAUGE. 91 fectly tight and can be renewed, when necessary, in t
. Locomotive text for engineers and firemen; a complete treatise on the engine, electric head-light and standard code of train rules . Ex t er/o r //e* fnter/or V/enr. PLATE 19NEW TYPE GAUGE-COCKS When the necessary repairs have been completed, re-place valve C, loosen up on the coupling nut and adjustthe squares so that the letters OO are in line with eachother. The gauge-cock can then be operated in the usualway. This type of gauge is also provided with a rubbercentral valve-seat, which tends to keep the cock per- WATER-GLASS GAUGE. 91 fectly tight and can be renewed, when necessary, in themanner previously described. Plate 19 shows themethod of construction which contains these features. WATER-GLASS GAUGE-COCKS. Construction. Plate 20 shows an interior view of thewater-glass gauge-cocks and glass, as they are attachedto the boiler. This water-gauge consists of two elbowvalves, 1 and 2, communicating with each other by meansof water-glass 3. The exterior diameter of this water-glass is usually about five-eighths of an inch and thethickness of the glass is one-eighth of an inch; its lengthvaries from eight to fifteen inches. When th
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