Process or apparatus for breaking a "jet" (or "sprue line") from cast printing type, removing irregularities (such as a pin or burr) from printing type, or for grooving printing type.
SEE OR SEARCH THIS CLASS, SUBCLASS:
413, for a method of obtaining plural pieces from a unitary blank by breaking through a weakened portion.
SEE OR SEARCH CLASS
199, Type Casting,
81+, for a machine for casting type combined with mechanism for finishing. See Class 409, Gear Cutting, Milling, or Planing, subclass 293 for a process of and subclasses 312 and 901 for apparatus for cutting to shape a metallic printing surface.
225, Severing by Tearing or Breaking, 1+, for a method of breaking, generally, and subclasses 93+ for apparatus for breaking, generally.
