Rotor blade locking means

Claim 1

IN A TURBOMACINE ROTOR ASSEMBLY INCLUDING A FLOWPATH SURFACE HAVING A CIRCUMFERENTIALLY-EXTENDING CHANNEL THEREIN, A DIVERGENT-WALLED GROOVE IN THE INNERMOST WALL OF SAID CHANNEL, AND A PLURALITY OF AIRFOIL MEMBERS RECEIVED IN SAID GROOVE, SAID MEMBERS HAVING ABUTTING PLATFORM PORTIONS PARTIALLY FORMING SAID FLOW-PATH SURFACE AND AT LEAST SOME OF SAID PLATFORM PORTIONS HAVING A CUTOUT TEREIN, MEANS RESTRAINING SAID AIRFOIL MEMBERS AGAINST MOVEMENT WITHIN OR SEPARATION FROM SAID GROOVE COMPRISING: AT LEAST ONE LOCKING SLOT HAVING SIDE WALLS EXTENDING PARTIALLY TRANSVERSELY OF THE CIRCUMFERENTIALLY-EXTENDING GROOVE AND RADIALLY-INWARD WITH RESPECT TO THE ROTOR AXIS, SUBSTANTIALLY TO THE BOTTOM OF SAID GROOVE, SAID LOCKING SLOT HAVING CIRCUMFERENTIALLY-SPACED LOAD-BEARING SURFACES: AT LEAST ONE LOCKING LUG, SAID LUG INCLUDING AN UPPER PORTION HAVING SPACED DIVERGENT END WALLS, AND A THREADED HAVING SPACED DIVERGENT END WALLS, AND A THREADED HOLE THERETHROUGH; AND JACKING MEANS THREADABLY ENGAGED IN SAID HOLE, SAID JACKING MEANS BEING OPERABLE TO CAUSE THE DIVERGENT END WALLS OF SAID LUG TO FORCIBLY ENGAGE THE DIVERGENT WALLS OF SAID GROOVE FOR SELF-LOCKING SUPPORT OF SAID LUG, AND THE SIDE WALLS OF SAID LUG TO BE IN COOPERATING ENGAGEMENT WITH SAID LOCKING SLOT SIDE WALLS, WITH THE UPPER PORTION OF SAID LUG BEING RECEIVED IN SAID CUT-OUT IN SAID ABUTTING PLATFORM PORTIONS TO PREVENT CIRCUMFERENTIALLY MOVEMENT OF SAID AIRFOIL MEMBERS IN SAID GROOVES.