(under subclass 438) Device wherein means is provided to constrain the work to movement about a fixed axis.
(1) Note. For original placement in this subclass, a patent must claim structure which limits motion of the work to a pivotal or arcuate path by reaction directly on the work itself instead of on a work carrier. The latter type of device will be found in patents placed in subclass 411.
SEE OR SEARCH THIS CLASS, SUBCLASS:
267, for means to advance work step-by-step in an arcuate path in a cutting machine.
351, for work constrained to swing about a progressively cutting tool during tool stroke.
410+, for means to guide a work carrier in a nonrectilinear path.
411+, and see (1) Note above. SEE OR SEARCH CLASS
269, Work Holders, appropriate subclasses, for a guide of the type found in this subclass and claimed, per se (i.e., not in combination with significant tool structure).
