Patent ID: 8001755

Claim:
A hay rake comprising: a central frame; at least two wheels attached to the central frame; a tow bar attached to the central frame and extending in a frontward direction from the central frame; a wing assembly including an arm coupled to the central frame by a pivot joint defining a pivot axis about which the wing assembly is rotatable with respect to the central frame, the arm having a longitudinal axis and being adjustable among multiple fixed lengths, a wing coupled to an end of the arm opposite the pivot joint, the wing being adjustable among multiple fixed positions by rotating the wing with respect to the arm about a wing adjustment axis, wherein the only degree of freedom between the wing and the central frame is rotation about the pivot axis when the arm is in any one of its fixed lengths and the wing is in one of its fixed positions, and wherein the wing is arranged for mounting a plurality of hay rake wheels along a length of the wing, and an arm actuator mount fixedly coupled to the arm; a wing actuator having a first end coupled to the arm actuator mount and a second end coupled to the central frame, the actuator arranged to actuate the wing assembly between an outward position and an upward position; wherein the longitudinal axis of the arm extends horizontally outwardly from the pivot joint when the wing assembly is in the outward position, the longitudinal axis of the arm extends upwardly from the pivot joint when the wing assembly is in the upward position, the wing is horizontal and angled outwardly in the frontward direction when the wing assembly is in the outward position, and the pivot axis is skewed such that the wing is horizontal and parallel to the forward direction when the wing assembly is in the upward position.