(under subclass 284) Device wherein the tool is cyclically operated, and wherein a means is provided to permit or prohibit cutting during the cycle.
(1) Note. A tool pass (as applied in the title and definition of this and indented subclass) refers to a sweep of the tool along with the work and including both its flying motion and whatever feed motion is present. A pass may be rendered ineffective to cut the work by a change in tool motion (either in its flying or feed movements), or by a change of work-feed motion, or both.
(2) Note. Patents disclosing operator actuated means to render a tool pass ineffective will be found here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
57, for a device in which the cyclic operation of the cutter is stopped by an intervening force and is resumed upon release of the force.
306+, for a device in which the work is shifted laterally into the path of the cutter to effect a cut.
