RADIAL POSITIONER, LOCK AND ROTARY CONTACTS FOR ELECTROMAGNETIC DRILL MOUNT

摘要

For the rotary mount of a drill press support mounted on a rotary bearing plate having a diametrically extending open center mounted on a center pin extending upwardly from a fixed base, rotary electrical contacts in the center pin eliminating twisting of the wires therein and a radial positioner and locking means in the form of a radially extending lever offset from the drill on the drill press support and threaded to a yoke circumscribing the center pin and confining rollable members between spaced races on the pin for pressing the rotary bearing plate into locked engagement with the fixed base.