(under subclass 663) Apparatus comprising an earth working element having a plurality of earth-engaging portions movable relative to one another and an actuator for relatively moving the portions.
(1) Note. The plurality of earth-engaging portions may be different soil-working portions or may include a runner or depth gauge.
SEE OR SEARCH THIS CLASS, SUBCLASS:
613+, for plural, relatively adustable distinct tools.
714+, for plural tool or earth engaging parts relatively movable during operation.
736+, for relatively adjustable tool or earth engaging parts.
811+, for an actuator for relatively adjustable earth-engaging parts of an elongated blade mounted ahead of a motor vehicle.
