Cutting bit holders

Claim 1

IN A STRUCTURE OF THE CLASS DESCRIBED, A BLOCK, MEANS IN CONNECTION WITH THE BLOCK PROVIDING A RECESS FOR ACCEPTING A PORTION OF THE BODY OF A DOUBLE ENDED CUTTER BIT SO AS TO MAINTAIN IT IN CUTTING POSITION, SAID MEANS HAVING SURFACES TO ENGAGE SAID BIT TO SUSTAIN BOTH THE REARWARD AND THE DOWNWARD STRAINS OF CUTTING, RESILIENT MEANS MOUNTED ON SAID BLOCK FOR ENGAGING A FORWARDLY DIRECTED FACE OF SAID CUTTING BIT TO MAINTAIN SAID BIT IN CONTACT WITH SAID SURFACES, AND TO PREVENT REMOVAL OF SAID BIT FROM SAID RECESS, SAID RESILIENT MEANS BEING PIVOTALLY CONNECTED WITH SAID BLOCK, SAID RESILIENT MEANS BEING MOVABLE TO DISENGAGE SAID FORWARDLY DIRECTED FACE OF SAID CUTTING BIT AND TO CLEAR THE OPENING OF SAID RECESS SUFFICIENTLY TO PERMIT FREE WITHDRAWAL OF SAID BIT FROM SAID RECESS.