The displacement lubricator is an automatic oil lubricator for steam engines, first introduced in the United Kingdom in 1860 by John Ramsbottom. It operates by allowing steam to enter a closed vessel containing oil. After condensing, the water sinks to the bottom of the vessel, causing the oil to rise and overflow into delivery pipes. In a steam locomotive, it was often positioned in the cab where the rate of oil feed could be observed.
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| - The displacement lubricator is an automatic oil lubricator for steam engines, first introduced in the United Kingdom in 1860 by John Ramsbottom. It operates by allowing steam to enter a closed vessel containing oil. After condensing, the water sinks to the bottom of the vessel, causing the oil to rise and overflow into delivery pipes. In a steam locomotive, it was often positioned in the cab where the rate of oil feed could be observed. (en)
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| - The displacement lubricator is an automatic oil lubricator for steam engines, first introduced in the United Kingdom in 1860 by John Ramsbottom. It operates by allowing steam to enter a closed vessel containing oil. After condensing, the water sinks to the bottom of the vessel, causing the oil to rise and overflow into delivery pipes. In a steam locomotive, it was often positioned in the cab where the rate of oil feed could be observed. (en)
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| - Displacement lubricator (en)
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