(under subclass 29) Apparatus in which the means severs a large block of material in one cutting movement relative to the material, the cutting means comprising an endless loop which is described as arcuately swinging into and behind a block of material to sever the block in one sweep.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15, for a mining process in which relatively large blocks of predetermined shape are severed.
24+, for an ice working process in which relatively large blocks of ice are severed.
44, for a sidewall working machine in which a conveyor cooperates with an undercutter, the material generally being handled in large chunks.
55+, for a rotary cutter head with an advance direction coincident to the rotary axis and which may comprise an
annular core forming type cutter which forms a core on advance movement and may include means to break the core loose from the formation as a chunk upon retraction. 65+, for a mining machine in which a conveyor cooperates with an undercutter, the material generally being handled in large chunks.
SEE OR SEARCH CLASS
175, Boring or Penetrating the Earth,
403+, and see the search notes therein for a core forming type earth boring tool.
