(under subclass 681) Apparatus comprising an earth working element held in earth working position by a detent means readily operated by an attendant so that after release of the detent the earth working element assumes a position offering less resistance to a draft force propelling it over the ground.
SEE OR SEARCH THIS CLASS, SUBCLASS:
261+, for implements which are latched in position, the latch being released upon overload to permit the implement to shift.
481, for tools adapted to be lifted for transport on a wheeled frame by an actuator which has a latch means separate from the actuator for holding the tool in position relative to the frame.
494, for a tool and an actuator for lifting it for transport, the tool being held in position by a toggle.
529+, for intermittently rolling implements with latch means to stop the rotation.
