have been already explained in treating of the oscillating engine . Turning gear . — When the vessel is in port , with the steam down , it is necessary to turn the engines daily by hand , so as to change the relative position of the work ing parts , and prevent the fur - rowing induced by the… … side of the turning wheel , and Fig . 340 . — Turning Gear . draw out the bottom bush on a , Worm wheel . b , Worm pinion . c C , Eccentrics . d , Handle connecting the eccentric arms . e , Plate which the worm shaft is stepped , for bolting to the bulkhead . by means of a small hand screw and…
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