.~ Driven tool selectively shiftable along line of travel {1}
83
.~.~ Tool drive interrupted by shifting tool
DEFINITION
Classification: 172/83
(under subclass 82) Apparatus in which the back or forth
shifting movement of the earth working element is operative to effect a disengagement or declutching of the drive means to said earth working element to thereby arrest the cyclic motion of the element while in said back or forth position.
(1) Note. The usual purpose of these devices is to stop the cyclic motion of the tool when it has been shifted to a fore or after position to avoid chopping out or otherwise injuring a plant.
SEE OR SEARCH THIS CLASS, SUBCLASS:
75, for driven earth working elements which are mounted for vertical shifting on a frame, the vertical shifting causing an interruption of the drive to the elements.
