Index table

Claim 1

A ROTARY TABLE ASSEMBLY COMPRISING A STATIONARY BASE AND A ROTARY TABLE POSITIONED ON AND OVER SAID BASE, SAID BASE HAVING ADJACENT THE UPPER END THEREOF AN ANNULAR GROOVE DEFINED BY A VERTICALLY EXTENDING SURFACE AND A HORIZONTALLY EXTENDING SURFACE, SAID GROOVE OPENING RADIALLY INWARDLY AND AXIALLY UPWARDLY AND BEING OVERLAPPED BY SAID TABLE, SAID TABLE LIKEWISE HAVING A GROOVE ON THE UNDERSIDE THEREOF SPACED RADIALLY INWARDLY FROM THE GROOVE ON THE BASE AND BEING DEFINED BY A VERTICALLY EXTENDING SURFACE AND A HORIZONTALLY EXTENDING SURFACE, SAID LAST MENTIONED GROOVE OPENING RADIALLY OUTWARDLY AND AXIALLY DOWNWARDLY, SAID GROOVES BEING JUXTAPOSED IN A RADIAL DIRECTION, MEANS JOURNALLING SAID TABLE ON SAID BASE AND FOR RESISTING BOTH RADIAL AND AXIAL THRUST LOADING ON THE TABLE COMPRISING A SINGLE BEARING ASSEMBLY COMPRISING AN INNER RACE WITH A V-SHAPED GROOVE THEREIN, AN OUTER RACE WITH A V-SHAPED GROOVE THEREIN AND A PLURALITY OF ROLLING ELEMENTS DISPOSED BETWEEN SAID RACES AND IN SAID GROOVES, SAID INNER RACE HAVING HORIZONTALLY AND VERTICALLY DISPOSED FACES IN CLOSE COPLANAR ENGAGEMENT WITH THE VERTICALLY AND HORIZONTALLY EXTENDING FACES OF THE GROOVE ON THE TABLE, SAID OUTER RACE LIKEWISE HAVING VERTICALLY AND HORIZONTALLY DISPOSED SURFACES IN CLOSE COPLANAR ENGAGEMENT WITH THE VERTICALLY AND HORIZONTALLY EXTENDING FACES OF THE GROOVE ON THE BASE, SAID ROLLING ELEMENTS COMPRISING A PLURALITY OF CYLINDRICAL BEARING ROLLERS HAVING A LENGTH EQUAL TO THEIR DIAMETER, SAID ROLLERS BEING ALTERNATELY POSITIONED WITH THEIR ROLLING AXES INCLINED AT AN ANGLE OF 45* TO THE VERTICAL AND THE ADJACENT ROLLERS HAVING THEIR AXES OPPOSITELY INCLINED.