Test fixtures for determining the compressive or tensile strength of various rings

Claim 1

A TEST FIXTURE FOR DETERMINING THE STRENGTH OF VARIOUS TEST RINGS, A BASE PLATE, AN ANNULAR FULCRUM RING CONCENTRIC WITH AND SECURED TO THE BASE PLATE, A GUIDE POST INSERTABLE IN THE CENTER OF SAID ANNULAR RING AND PERPENDICULAR TO SAID BASE PLATE, A PLUNGER HAVING AN ANNULAR COLLAR SLIDABLE ON SAID GUIDE POST, A PLURALITY OF ROCKER ARMS ROCKABLY MOUNTED ON A SURFACE OF THE FULCRUM RING AND A FINGER PORTION OF EACH ROCKER ARM IN CONTACT WITH SAID ANNULAR COLLAR, EACH OF SAID ROCKER ARMS BEING PROVIDED WITH NOTCHES TO DEFINE SEATS FOR SUPPORTING A TEST RING AND HAVING AT LEAST ONE SURFACE PARALLEL TO SAID PLUNGER, AN AXIAL LOAD APPLIED TO SAID PLUNGER MOVING SAID PLUNGER ON SAID GUIDE POST TOWARD SAID BASE PLATE WHEREBY THE ANNULAR COLLAR MOVES THE FINGER PORTIONS OF THE ROCKER ARMS ABOUT THE FULCRUM RING SURFACE THEREBY SIMULTANEOUSLY LOADING THE TEST RING RADIALLY WITH EQUAL FORCES AT A PLURALITY OF POINTS AT A UNIFORM RATE.