(under subclass 55) Device in which the supporting structure, which allows shifting of the holder, includes mechanism for securing the holder against both forward and rearward shifting while locating the holder in a structurally predetermined position with respect to support structure.
(1) Note. A patent to a holder with indicia so an operator can visually determine where to place the work holder with respect to the base is not considered to include indexing means for this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
74+, for patents to a holder with means to lock the work holder with respect to its base or support.
307, for patents to a work-underlying support with a sight gage.
SEE OR SEARCH CLASS
74, Machine Element or Mechanism, 813+, for tool or work turret indexing means, per se.
