(under the class definition) Chucks wherein the holding means may be rotated with respect to the chuck-body, angularly positioning the work and enabling a tool to engage different angular points on the work, as in successively cutting multiple threads or working otherwise on angularly-separated points.
SEE OR SEARCH CLASS
74, Machine Element or Mechanism,
813+, for assemblies of general utility having means to index rotary members, and see the Notes thereto.
