Importance

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Abstract

A rotary tool capable of employing one of two tool implements, alternatively, and capable of shifting between the two implements semi-automatically. A rotatable mandrel carries a first tool implement and a carriage is mounted on the mandrel to rotate around the same axis and carries a second implement. The carriage is moveable axially relative to the mandrel between a rearward position where the second implement is inactive and the first implement is at an advanced active position and a forward position where the second implement is at an advanced active and the first implement is at a retracted inactive position. An interlock device is provided for the mandrel and carriage that stops axial movement of the carriage beyond the forward position and stops rotational movement between the mandrel and the carriage while the carriage is at the forward position.

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First Claim