(under the class definition) Apparatus comprising a machine or cutter which is described as for the purpose of disintegrating or cutting ice.
(1) Note. This subclass provides an art group search for machines or cutters for a specifically disclosed use of working on ice. While in some cases the claimed device is not structurally limited to such function and the search must be continued in other subclasses, many features are found in these patents which are of limited use such as sled runner mounted and floating machines, ice block forming guides, and cutters which do not appear to be efficiently adaptable to the working of a material as hard as rock.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3, for a process of apparatus for converting a solid such as ice to a fluid.
SEE OR SEARCH CLASS
114, Ships, 40+, for a vessel having means to break an ice flow or open a harbor or the like.
175, Boring or Penetrating the Earth,
18, for a process or apparatus for boring or penetrating a hole in ice.
