▁the ▁bu ckets , ▁etc . ▁At ▁Dal gar ven ▁the ▁wheel ▁was ▁originally ▁en closed ▁by ▁high ▁walls ▁which ▁served ▁the ▁same ▁purpose ▁as ▁trees . ▁ ▁The ▁Dal gar ven ▁wheel ▁is ▁a ▁low ▁breast shot , ▁where ▁the ▁water ▁strik es ▁the ▁wheel ▁at ▁a ▁quarter ▁of ▁its ▁diameter ▁or ▁height ▁of ▁the ▁wheel ▁and ▁it ▁turns ▁with ▁an ▁anti - clock wise ▁rotation . ▁On ▁the ▁outer ▁edge ▁of ▁each ▁bucket ▁is ▁a ▁' s ac r ific ial ▁board ' ▁which ▁will ▁break ▁away ▁if ▁any ▁object ▁becomes ▁wed ged ▁beneath ▁it . ▁This ▁is ▁very ▁important , ▁as ▁the ▁str esses ▁and ▁stra ins ▁set ▁up ▁by ▁the ▁wheel ▁suddenly ▁stopping ▁would ▁cause ▁considerable ▁damage ▁to ▁the ▁various ▁c ogs ▁and ▁to ▁the ▁drive ▁to ▁the ▁gr inding ▁stones ▁themselves , ▁which ▁have ▁significant ▁mass ▁and ▁momentum ▁when ▁employed ▁in ▁the ▁process ▁of ▁gr inding . ▁The ▁use ▁of ▁iron ▁brackets ▁to ▁provide ▁support ▁to ▁the ▁wooden ▁p add les ▁on ▁the ▁wheel ▁is ▁an ▁unusual ▁feature . ▁The ▁massive ▁wooden ▁h irst ▁supporting ▁the ▁gr ind st ones ▁can ▁be ▁viewed ▁from ▁inside ▁of ▁the ▁mill . ▁ ▁In ▁the ▁ 1 9 4 0 s , ▁the ▁mill er ▁at ▁Dal gar ven ▁used ▁the ▁wheel ▁to ▁produce ▁electric ity ▁which ▁was ▁stored ▁in ▁liquid ▁acid ▁batter ies . ▁At ▁present ▁( 2 0 0 6 ) ▁the ▁Mill ▁Trust ees ▁are ▁looking ▁into ▁the ▁possibilities ▁of ▁using ▁the ▁wheel ▁to ▁produce ▁electric ity ▁to