US PATENT SUBCLASS 171 / 28
.~.~ By opposed rotary gripping elements

Current as of: June, 1999
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171 /   HD   UNEARTHING PLANTS OR BURIED OBJECTS

26  DF  WITH ABOVE-GROUND MEANS FOR DETACHMENT OF PLANT PART {6}
27  DF  .~ Detachment by pulling, beating, shaking or crushing {1}
28.~.~ By opposed rotary gripping elements

DEFINITION

Classification: 171/28

(under subclass 27) Apparatus including at least a pair of

adjacent oppositely rotating members between which certain portions of a plant are engaged and fed until such portions are pinched or pulled apart from other portions of said plant.

SEE OR SEARCH THIS CLASS, SUBCLASS:

58, for opposed roller-type plant extractors.