Tamperproof construction for hydrant actuating nut

In a fire hydrant having a hydrant shaft with, valve-actuating polygonal nut at the end thereof extending externally outwardly from a hydrant cover, a construction for rendering the nut tamper proof against unauthorized actuation comprising a nut actuating body having a first body portion with a first recess therein for receiving said polygonal nut in turning relationship, first locking means in said first body portion for securing said first body portion to said polygonal nut against removal therefrom, a second body portion which is coaxial with said first body portion and extends outwardly from said first body portion, a shroud, a second recess in said shroud for rotatably receiving said first body portion, second locking means for locking said shroud to said first body portion against removal therefrom while permitting relative rotation therebetween, an opening in said shroud for permitting said second body portion to project therethrough and extend beyond said shroud, a cap, a third recess in said cap for receiving said second body portion, third locking means extending between said cap and said second body portion for locking said cap to said second body portion while permitting relative rotation therebetween, a space between said cap and said shroud for permitting exposure of a limited portion of said second body portion, and means on said limited portion of said second body portion for receiving a wrench for turning said nut actuating body and thus turning said polygonal nut and hydrant shaft.