Implement carrier

Claim 2

An implement carrier comprising: a transversely extending implement-supporting frame; a draft frame securable to a propelling vehicle; means connecting the implement-supporting frame to the draft frame for movement about a transverse axis between a lowered groundworking position and raised field and road transport positions; rock arm means secured to the implement-supporting frame; lever arm means having one end pivotally connected to the draft frame; an extensible and retractable hydraulic cylinder anchored between the draft frame and lever arm means; first link means pivotally connected to the rock arm means; second link means pivotally connected to the first link means and the lever arm means so that upon full extension and retraction of the hydraulic cylinder the implementsupporting frame is pivoted between its working and field transport positions; and releasable means for rigidly securing the second link means to the lever arm means so that the second link means forms an extension of the lever arm means and upon full extension and retraction of the hydraulic cylinder the implement-supporting frame is pivoted between its working and road transport positions.

Claim 3

The implement carrier set forth in claim 1 wherein the releaSable means includes pin means insertable through apertures provided in the second link means and lever arm means.

Claim 4

The implement carrier set forth in claim 2 wherein the second link means is provided with abutment means which contacts the second link means and limits buckling movement between the first and second links when the second link means is free to pivot with respect to the lever arm means.

Claim 5

The implement carrier set forth in claim 2 wherein the lever arm means extends generally upwardly from its pivoted connection with the draft frame and extension and retraction of the hydraulic cylinder moves the lever arm means fore and aft to opposite sides of a vertical position, and the second link means forms an obtuse angle with the lever arm means when rigidly secured thereto so that when the lever arm means is moved aft of the vertical position to move the implement-supporting frame to its working position, the second link means is in substantial alignment with the first link means whereby, whenever the implement supporting frame is in its working position, the apertures provided in the second link means and lever arm means are in substantial alignment to facilitate insertion and removal of the pin means.

Claim 6

An implement carrier comprising: a wheeled cart adapted to be connected to a propelling vehicle; a drawbar mounted on the cart for movement about a horizontal axis between a working position and field and road transport positions; a plurality of elongated implement-supporting arms, each having one end secured to drawbar; said arms extending generally vertically when the drawbar is in the road transport position and obliquely to the horizontal when the drawbar is in the field transport position; the drawbar including a central member and a pair of extension members pivotally connected to the ends of the center member for vertical swinging movement when the drawbar is in the working position and horizontal swinging movement when the drawbar is in the road transport position; and means for moving the drawbar between the working position and either of the field and road transport positions including a rock arm connected to the drawbar, a lever arm pivotally mounted on the cart, first and second link means pivotally connected to each other and to the rock arm and lever arm, respectively, an extensible and retractable hydraulic cylinder operatively connected between the cart and lever arm, and releasable locking means for rigidly securing the second link means to the lever arm to form an extension thereof.

Claim 7

An implement carrier comprising: a wheeled cart adapted to be connected to a propelling vehicle; a drawbar mounted on the cart for movement about a horizontal axis between a working position and field and road transport positions; a plurality of elongated implement-supporting arms, each having one end secured to drawbar; said arms extending generally vertically when the drawbar is in the road transport position and obliquely to the horizontal when the drawbar is in the field transport position; the drawbar including a central member and a pair of extension members pivotally connected to the ends of the center member for vertical swinging movement when the drawbar is in the working position and horizontal swinging movement when the drawbar is in the road transport position; and means for moving the drawbar between the working position and either of the field and road transport positions including a rock arm connected to the drawbar, a lever arm pivotally mounted on the cart, first and second link means pivotally connected to each other and to the rock arm and lever arm, respectively, an extensible and retractable hydraulic cylinder operatively connected between the cart and lever arm, and releasable locking means for rigidly securing the second link means to the lever arm to form an extension thereof.

Claim 8

The implement carrier set forth in claim 5 wherein the second link means and lever arm are provided with corresponding apertures with at least one of the apertures being spaced from the end of the second link means or lever arm, and the releasable locking means includes removable pin means insertable through the apertures when the apertures are aligned.