(under subclass 162) Machine in which the abrading tool moves to-and-fro about an axis, in one plane during abrading.
(1) Note. Including herein is a "rocking" tool (i.e., one which moves to-and-fro about an axis that coincides with the point of engagement of the tool with the workpiece).
SEE OR SEARCH THIS CLASS, SUBCLASS:
121+, for an abrading machine which uses a rotary-oscillating tool.
