Cutting tool having universal joint

Claim 1

A CUTTING TOOL COMPRISING IN COMBINATION: A HOLDER ADAPTED AT ONE END TO BE SECURELY HELD IN A CHUCK, SAID HOLDER HAVING A SHOULDER DIRECTED AWAY FROM SAID ONE END AND LYING PERPENDICULAR TO THE PRINCIPAL AXIS OF SAID HOLDER; AN ELONGATED RECESS EXTENDING AXIALLY IN SAID HOLDER AND OPENING INTO THE PLANE OF SAID SHOULDER; A DETACHABLE FLUTED CUTTER HAVING AN END FACE IN ENGAGEMENT WITH SAID SHOULDER AND SLIDABLE IN A RADIAL DIRECTION WHILE IN SAID ENGAGEMENT IN RESPONSE TO AN INITIAL RADIAL LOAD; SAID CUTTER HAVING AN AXIALLY DIRECTED RECESS OPENING INTO THE PLANE OF SAID SHOULDER AND ALIGNED WITH THE SHOULDER RECESS; ELONGATED MEANS RECEIVED IN SAID RECESSES, SAID MEANS HAVING AT ONE END A SWIVEL CONNECTION WITH SAID CUTTER, AND HAVING AT THE OPPOSITE END A SWIVEL CONNECTION WITH SAID HOLDER, SAID ELONGATED MEANS INCLUDING THREADS ARRANGED TO BE TIGHTENED IN RESPONSE TO A CUTTING TORQUE APPLIED TO SAID CUTTER TO THEREBY FRICTIONALLY LOCK SAID CUTTER AGAINST SAID SHOULDER AT A PLACE DETERMINED BY SAID INITIAL LOAD.