US PATENT SUBCLASS 171 / 129
.~.~.~ Rotary drum type


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

111  DF  EARTH REMOVAL AND SEPARATION {8}
124  DF  .~ Moving conveyer, digger or separator {3}
126  DF  .~.~ Moving open separator or separating conveyer {7}
129.~.~.~ Rotary drum type


DEFINITION

Classification: 171/129

(under subclass 126) Apparatus in which the reticulated separating surface is formed as a member defining a surface of revolution and journalled for rotation in such fashion that a mass of excavated earth having buried objects entrained therein is applied to either the exterior or interior of said member in order to retain the objects while the earth passes therethrough.

SEE OR SEARCH THIS CLASS, SUBCLASS:

92, for separators which may be cylindrical and which are disposed within the confines of a surrounding endless

separating digger.

112, for rotary drum separators which roll along the ground.

113, for open drum-type separators having spiral conveyors or impellers to move excavated material therethrough.

128, for separating cylinders or drums which have separating tines or interstitial surfaces extending radially therefrom.