Nut locking structures

Claim 1

IN AN ASSEMBLY OF THE CHARACTER DESCRIBED, IN COMBINATION, A FASTENED MEMBER HAVING A PLANAR SURFACE, A THREADED FASTENING BOLT EXTENDING THROUGH A HOLE PROVIDED THEREFOR IN SAID MEMBER AND WHICH OPENS THROUGH SAID SURFACE, A LATERALLY EXTENDING, POLYGONALLY SHAPED COMPRESSION MEANS ON THE BOLT AND BEING DRAWN INTO TIGHT ENGAGEMENT WITH SAID SURFACE, AND MEANS ON SAID SURFACE FOR PREVENTING SAID COMPRESSION MEANS FROM BECOMING UNINTENTIONALLY UNLOOSENED COMPRISING A PLURALITY OF CIRCUMFERENTIALLY SPACED GROOVES IN AND OPENING ONTO SAID SURFACE AND WHICH EXTEND RADIALLY OUTWARDLY FROM SAID BOLT HOLE AND DEFINE RADIAL RIBS ON SAID SURFACE, SAID GROOVES BEING OF UNIFORM WIDTH AND DEPTH THROUGHOUT THEIR LENGTH WHEREBY THE WIDTH OF THE RIBS INCREASES PROGRESSIVELY IN ACCORDANCE WITH THEIR RADIAL LENGTH, THERE BEING ONE SUCH RIB DISPOSED BETWEEN EACH TWO ADJACENT GROOVES AND EACH SAID RIB HAVING SPACED SIDE FACES AND A FLAT TOP SURFACE EXTENDING THEREBETWEEN WHICH IS DISPOSED IN THE PLANE OF SAID PLANAR SURFACE, SAID RIBS HAVING RADIAL LENGTH GREATER THAN THE GREATEST DIAMETER OF SAID COMPRESSION MEANS, AND THE MATERIAL OF AT LEAST THE RIBS BEING MORE MALLEABLE THAN THAT OF THE COMPRESSION MEANS WHEREBY TIGHTENING OF SAID MEANS AGAINST THE SURFACE AS AFORESAID EFFECTS COMPRESSIVE DEFORMATION OF SAID RIBS IN VERTICAL, CIRCUMFERENTIAL AND RADIAL DIRECTIONS IN A MANNER AND TO A DEGREE SUCH THAT THEY EFFECTIVELY RESIST TURNING OF SAID COMPRESSION MEANS IN UNLOOSENING DIRECTION.