(under subclass 640) Gearing in which the gears are carried by parallel shafts which are movable from or toward each other to such a limited extent that the gears always remain in engagement.
SEE OR SEARCH CLASS
226, Advancing Material of Indeterminate Length, appropriate subclasses for methods of, and apparatus for, feeding material without utilizing the leading or trailing ends to effect movement of the material.
271, Sheet Feeding or Delivering, for front gage rotary conveyors.
