Harrow downforce adjustment

A harrow attachment for a tillage implement includes a harrow drawbar mounting at least one rank of harrowing tools. A pivot link pivotally couples the harrow rank to the drawbar so it can trip by pivoting upward toward the drawbar from a home position in which the harrow rank is farthest away from...

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Bibliographic Details
Main Authors Blauwet, Bryan D, Nefzger, Jeremy, Janelle, Luc, Moreno, Humberto, Steinlage, David L, Becker, Shawn J, Merkle, Jerry R
Format Patent
LanguageEnglish
Published 25.06.2019
Subjects
AGRICULTURE
ANIMAL HUSBANDRY
FISHING
FORESTRY
HUMAN NECESSITIES
HUNTING
PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES ORIMPLEMENTS, IN GENERAL
SOIL WORKING IN AGRICULTURE OR FORESTRY
TRAPPING
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Summary:A harrow attachment for a tillage implement includes a harrow drawbar mounting at least one rank of harrowing tools. A pivot link pivotally couples the harrow rank to the drawbar so it can trip by pivoting upward toward the drawbar from a home position in which the harrow rank is farthest away from the drawbar. A downforce spring is coupled to the drawbar and in a variable length state when the harrow rank is tripped to apply a return biasing force to the harrow rank. An adjustment mechanism couples the spring to the harrow rank and/or the pivot link in one of a plurality of adjustment locations in each of which the harrow rank is in the home position and the spring is in a fixed length state in which the biasing force is removed.
Bibliography:Application Number: US201615243739