(under subclass 639) Tilting carriers in the form of a bucket skip box or similar container having movable means thereon for providing an opening or passageway through which the load may discharge by gravity when the carrier is tilted.
SEE OR SEARCH THIS CLASS, SUBCLASS:
616, for valved carriers of the type found here combined with movable material loading or unloading means which is operated by movement of the carrier.
657+, for elevator buckets or skips that discharge solely through a controlled port or outlet.
