Magnetic base drill

Details Magnetic base drill Magnetic base drill

B - Operations, Transporting

23

B

77/30

B23B 51/00 (2006.01)

Patent

CA 1145593

Abstract of the Disclosure A magnet base drill unit having a finger thereon frictionally engaging the surface of the work- piece to which the base of the drill unit is magnetic- ally adherred. The finger is movable in response to lifting or sliding of the energized magnet base from the support base of the workpiece to actuate a switch for de-energizing the drill motor. The unit also in- cludes a pointed punch adjacent the rear end of the magnet base which can be in one form of the invention inpacted into the workpiece support surface either by a manually operated lever or automatically whenever the drill spindle is retracted from the work to a position near the upper end of its stroke. A second punch may be located on the drill unit rearwardly of the auto- matically actuated punch. The second punch is arranged to be embedded into the support surface of the work- piece by a manually applied hammer blow.

391793

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