Method and apparatus for moving a drawbar between transport...

Details Method and apparatus for moving a drawbar between transport... Method and apparatus for moving a drawbar between transport...

A - Human Necessities

01

B

A01B 73/06 (2006.01) A01B 49/00 (2006.01)

Patent

CA 2133941

An agricultural drawbar adapted to be pulled by a power source and used for farming operations such as spraying or harrowing, is equipped with right and left wing booms which are adapted to be folded or unfolded from the transport to operating positions. To enable the drawbar to move more quickly and easily from one position to another, lockable inner caster wheels are attached to a tensioning/control assembly which is attached to the cart. During the folding process the inner lockable caster wheels are progressively turned as the wings move to the folded transport position, thus easing the implement quickly into the transport position without skidding or binding of the wheels. Furthermore, a semi-lockable outer caster wheel is adapted to rotate inwardly to a toe-out position to facilitate the unfolding of the drawbar when the drawbar is pushed rearwardly.

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