B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
77/10, 77/16
B23B 45/14 (2006.01) B23B 45/00 (2006.01) B27B 17/00 (2006.01)
Patent
CA 1058919
ABSTRACT A drilling attachment adapted to be fixed to a chain saw and a chain saw so equipped wherein the driving output shaft and a drill chuck are advantageously connected by a pair of friction drive wheels to produce clockwise rotation of the drill chuck and thus allow the use of standard and less expensive clockwise drills, to automatically provide for relative slipping without using a slip clutch, to produce the desired speed reduction, and to allow trouble and failure-free operation in the field, such as to drill holes in maple trees to collect the sap thereof. This drilling attachment includes a first friction drive wheel and a second friction drive wheel frictionally engaging each other with the second friction drive wheel rotatively carried by a bracket adjustably securable to the chain saw. A drill chuck is fixedly con- nected to the second friction drive wheel for bodily rotation clockwise therewith.
264661
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