.~.~ Advance means engageable with tool shaft at any point
DEFINITION
Classification: 173/149
(under subclass 148) Apparatus in which the means to cause or control forward movement of the tool includes structure adapted to engage the tool or tool shaft at any point along the axial extent thereof, whereby the axial extent of the forward movement of the tool or tool shaft is not limited by the advance stroke of said advance means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
53+, for a grip drive which reciprocates a hammer or tool and permits relative advance.
SEE OR SEARCH CLASS
226, Advancing Material of Indeterminate Length, appropriate subclass for a means for advancing an element of indeterminate length.
254, Implements or Apparatus for Applying Pushing or Pulling Force,
29+, for pipe and rod jacks, and including devices which are adapted to advance a pipe or rod by grasping the pipe or rod at any point. 414, Material or Article Handling,
431+, for apparatus for advancing and rotating an elongated article by means adapted to engage the article between its ends.
