Self-colleting drill

Details Self-colleting drill Self-colleting drill

B - Operations, Transporting

23

B

77/17

B23B 45/00 (2006.01) B25H 1/00 (2006.01)

Patent

CA 1146384

IMPROVED SELF-COLLETING DRILL Abstract of the Disclosure A self-colleting drill that includes a pair of parallel output shafts arranged to drive a pair of drill bits and means for retaining the work piece against a foot member of the drill so that the holes will be spaced therein in accordance with the spacing between the drill bits or shafts. A plurality of drill guide members having varying hole spacings therein, provide a variety of center distances be- tween the shafts that extend therethrough. A plurality of foot members are also provided that have mating hole spacings to the drill bushings providing for the variable drill bit spacing.

365595

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