Intertially activated spotfacing and counterboring tool

摘要: A cylindrical tool holder has at one end a shank section disposed to be chucked in the drive spindle of drill press or like, and its opposite recess which bit pivots between an operative position it projects radially outwardly from recess, inoperative within recess. The is connected operating rod pivotal slot holder, so that when swung limit position, vice versa. An actuating disc mounted on for limited rotation relative thereto, frictionally coupled adjacent outer periphery with flywheel rotatably whereby may transmitted by through friction coupling disc. thereon two spaced pins. One pin engages lateral projection pivot rotated direction flywheel, other swing retracting rotates direction.