STATIONARY ENGINES . 171 as also a plug tap , which can be regulated at pleasure from the engine - room floor . There is a central rod secured through the bottom of this internal box or … presses the tray , and water flows Fig . 104 . — Cataract with Wooden Tray . Box for water . b , Tray . c , Inlet valve . through the flap valves in the bot d 3 Regulating valve . e , Small hand wheel . tom until the plug rod ascends , when the preponderance of the weighted lever raises the…
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