USS Henley (DD-39)- Steam Piston, Piston Valve, Cover and Eccentric Rod for 8" X 8" Circuating Engine - NARA - 75842148.jpg
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USS Henley (DD 39) Steam Piston, Piston Valve, Cover and Eccentric Rod for 8" X 8" Circuating Engine NARA 75842148, USS Henley (DD-39), US National Archives series: Alphabetical Series of Ship Engineering Drawings, Images from the National Archives and Records Administration, US National Archives location: other, USS Henley (DD-39): Steam Piston, Piston Valve, Cover and Eccentric Rod for 8" X 8" Circuating Engine
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piston rod embolus eccentric piston ring piston eccentrically