US PATENT SUBCLASS 171 / 111
EARTH REMOVAL AND SEPARATION

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

111EARTH REMOVAL AND SEPARATION {8}
112  DF  .~> Rolling screen or sieve (e.g., wheel or belt)
113  DF  .~> Spiral conveyer for excavator or separator
114  DF  .~> With impeller or clod breaker for excavator or separator {4}
122  DF  .~> Clod pulverizer outside separating zone
123  DF  .~> Conveyer disposed below separator
124  DF  .~> Moving conveyer, digger or separator {3}
135  DF  .~> Separator formed in collector receptacle
136  DF  .~> Digger and fixedly interconnected contiguous separator

DEFINITION

Classification: 171/111

(under the class definition) Apparatus in which means are provided to excavate a mass of earth having plant roots or other objects imbedded therein; means being provided to receive said mass and to remove the earth from said objects and/or to lift said objects from the mass of earth to thereby separate and recover said objects.

(1) Note. Patents which disclose a separating digger but claim it only as a digger broadly in combination with an additional separator are classified herein as originals and are crossed here if any significant details of the separating digger are recited which would require classification of the original higher in the schedule.

SEE OR SEARCH THIS CLASS, SUBCLASS:

14+, for unearthing apparatus including a screen or the like adapted to allow desired objects to pass therethrough in order to separate said objects from larger particles or objects.

71+, for plows or soil cutters having trailing, vibrating separating members disposed adjacent thereto.

83, for plows or soil cutters having associated therewith members having separating surfaces which extend upwardly and rearwardly therefrom, away from the direction of draft.

110, for organization including a digging member and a moving conveyor adjustable therewith as a unit relative to a supporting chassis in which the conveyor may either be a separator or may conduct earth and/or buried objects to a separator. SEE OR SEARCH CLASS

172, Earth Working,

32, for an earth working apparatus with means for separating earth portions after earth working, and subclasses 681+ for earth working tools which are adapted to raise or turn a mass of earth having buried objects therein or adapted to move below the ground surface and sever plant roots.

209, Classifying, Separating, and Assorting Solids, appropriate subclasses, for the subcombination of separating means, per se.