. American engineer and railroad journal . in replaced as shown. B is a stationaryreservoir having a constant level of oil which enters through D,escapes to the lamps through H or overflows by B into C. Thetop of the oil is abjut two inches below the level of the top of thewick—all lamps being on the same level. When the level of oilin B falls below the end of D it permits air to enter A through Dand allows an equivalent quantity of oil to flow out. This auto-matic arrangement works very well. In underneath piping, thepipps H run down to and under the floor and up the sides of theroom or post;

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. American engineer and railroad journal . in replaced as shown. B is a stationaryreservoir having a constant level of oil which enters through D,escapes to the lamps through H or overflows by B into C. Thetop of the oil is abjut two inches below the level of the top of thewick—all lamps being on the same level. When the level of oilin B falls below the end of D it permits air to enter A through Dand allows an equivalent quantity of oil to flow out. This auto-matic arrangement works very well. In underneath piping, thepipps H run down to and under the floor and up the sides of theroom or post; here there is pressure in the pipes and leakage mayoccur. In running the pipes overhead by the siphon system the airtends to enter any orifice in the pipes instead of the oil flowingout, so that there is no trouble from oozing oil. All air tendingto break the continuity of flow collects in the highest point of asiphon, and a small reservoir is placed here to catch the nearly filled with air the globe O is inverted, which shuts. i

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering