(n.)One of the two annular plates at the periphery of a water wheel, which form the sides of the buckets; a shroud plate. Shrouded (a.)Provided with a shroud or shrouds. (imp. & p. p.)of Shroud Shroudy (a.)Affording shelter. ...
The method used to lock the drum against the device frame is by the use of two straightknurledge discs that are thrown outwards by centrifugal force as they ride on parallel ramps milled into the drum's enclosed outer periphery.