(under subclass 204) Apparatus in which the earth working means comprises separate earth working elements which are rotatable about a horizontal axis traverse to the direction of draft in order to alternately place the earth working elements in operation, the rotation being effected as a result of torque developed due to resistance of the ground to the forward motion of the earth working elements or some other ground contacting part of the earth working element carrier.
SEE OR SEARCH CLASS
37, Excavating,
436, 440, and 441 for scoops adapted to be rotated due to forward movement.
