.~ Relatively fixed drive for an advancing tool {2}
167
.~.~ With advance stopping means adapted to grip tool shaft at any point
DEFINITION
Classification: 173/167
(under subclass 165) Apparatus combined with a means to prevent relative tool advance by grasping the tool or tool
shaft at a plurality of positions along the longitudinal axial extent of the shaft, which positions do not have to be preconditioned compared with other positions on the shaft to cooperate with the particular grasping means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
149, for a means to cause or control tool advance relative to a drive such means including means to grasp a tool shaft at any point.
SEE OR SEARCH CLASS
188, Brakes,
67, for pipe or rod braking means utilized in the advancing thereof.
