(under subclass 55) Apparatus in which the extractor includes spaced members, at least one of which is in the form of a rotatable support having a helically arranged member thereon adapted to confront or engage the other of said members to cooperate therewith in feeding a buried object longitudinally of said support.
(1) Note. These helical screw extractors are usually employed to engage the foliage of a plant and lift it from the earth either with or without the help of an object-digging device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
89, and 95+, for rotary diggers which may be provided with
helical means cooperating therewith to feed the articles unearthed by the digger.
