Means for holding tool shanks in socket members

Claim 1

IN COMBINATION A SOCKET MEMBER AND A CUTTER BIT, SAID SOCKET MEMBER HAVING A PERFORATION THEREIN TO RECEIVE THE SHANK OF SAID CUTTER BIT, AND MEANS FOR RETAINING SAID SHANK IN SAID PERFORATION, SAID MEANS HAVING A PORTION ENGAGED WITH SAID SOCKET MEMBER OUTSIDE THE CONFINES OF SAID PERFORATION, AND ANOTHER PORTION EXTENDING FREELY SUBSTANTIALLY ACROSS SAID PERFORATION AND SUBSTANTIALLY PERPENDICULAR TO THE AXIS OF SAID PERFORATION, SAID LAST MENTIONED PORTION BEING DEFORMABLE BY REASON OF ITS INHERENT RESILIENCE, AND SAID CUTTER BIT HAVING A SHANK ADAPTED TO ENTER THE PERFORATION, ABUTMENT MEANS ON SAID CUTTER BIT ADAPTED TO COOPERATE WITH SAID SOCKET MEMBER TO DEFINE A SEATED POSITION OF SAID SHANK, A FIRST SURFACE ON SAID SHANK FOR DEFLECTING SAID DEFORMABLE PORTION OF SAID RETAINING MEANS WITHIN SAID PERFORATION DURING INSERTION OF SAID SHANK INTO SAID PERFORATION, A SECOND SURFACE OF SAID SHANK TO BE ENGAGED BY SAID DEFORMABLE PORTION OF SAID RETAINING MEANS WHEN SAID CUTTER BUT IS IN SAID SEATED POSITION, SAID SECOND SURFACE AND SAID ABUTMENT MEANS BEING SPACED WITH RESPECT TO EACH OTHER BY A DISTANCE SUCH THAT SAID DEFORMABLE PORTION OF SAID RESILIENT MEANS WILL EXERT A DOWNWARD FORCE OF SAID SHANK WHEN SAID CUTTER BIT IS IN SAID SEATED POSITION.