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Ludwig Niederhofheim
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Lubrication Details And Ventilation Of Internal Combustion Engines
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Abstract
2309. Niederhofheim, L. Feb. 1. Extinguishing oil lamps.-When the lamp is upset, the flame is automatically extinguished by the cutting off of the central air supply by means of a valve l which falls upon and closes thelower end of the central air supply tube g. Oil lamps, preventing overflow from.-The upper ends of the wicktubes b are inclined towards each other, so as to compress the wick and preveut the escape of oil when the lamp is overturned.
GB189902309D1899-02-011899-02-01Improvements relating to Oil Lamps.
ExpiredGB189902309A
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