Cutting tool comprising holder freely rotatable in socket with bit frictionally attached

Claim 1

A CUTTING TOOL FOR USE IN MINING MACHINES OF THE TYPE HAVING MEANS FOR MOUNTING A PLURALITY OF CUTTING TOOLS AND FOR MOVING SAID CUTTING TOOLS IN A CUTTING DIRECTION AGAINST THE FACE OF A MINERAL TO BE CUT, SAID MOUNTING MEANS HAVING SHANK RECEIVING PERFORATIONS THEREIN, AND SHANK RETAINING MEANS IN ASSOCIATION THEREWITH, SAID CUTTING TOOL COMPRISING A REPLACEABLE BIT AND A BIT HOLDER, SAID BIT HOLDER HAVING AXIALLY ALIGNED SHANK AND HEAD PORTIONS, SAID SHANK PORTION HAVING A CIRCULAR CROSS SECTION AND BEING SO CONFIGURED AS TO BE RECEIVED IN AND FREELY ROTATABLE WITHIN A SHANK RECEIVING PERFORATION OF SAID MOUNTING MEANS, SAID BIT HAVING A BODY WITH AN OUTER END, AN OUTER SURFACE ON SAID BIT BODY TAPERING TOWARD SAID OUTER END, A HARD CUTTING POINT AT SAID OUTER END OF SAID BODY, COACTING MEANS ON SAID BIT HOLDER HEAD AND SAID BIT FOR FRICTIONALLY ENGAGING SAID BIT WITH SAID BIT HOLDER HEAD, AND COOPERATING SURFACES ON SAID BIT BODY AND SAID BIT HOLDER HEAD SPACED FROM EACH OTHER FOR THE INSERTION THEREBETWEEN OF A PRYING TOOL FOR THE REMOVAL OF SAID BIT FROM SAID BIT HOLDER.