Patent ID: 8146338

Claim:
An adjustable rake for raking agricultural products, the adjustable rake comprising: a wheeled cart configured to be pulled in a direction of travel on a surface of travel, the wheeled cart including a central frame and transport wheels attached to the central frame; first and second rake arm positioners coupled to the wheeled cart and configured to translate in a direction transverse to the direction of travel of the wheeled cart; first and second front rake arm assemblies pivotably coupled to the first and second rake arm positioners, respectively; a first rear rake arm assembly pivotably coupled about a same first axis to the first front rake arm assembly, and a second rear rake arm assembly pivotably coupled about a same second axis to the second front rake arm assembly, the first and second axes being perpendicular to both the direction of travel of the wheeled cart and to the direction transverse to the direction of travel of the wheeled cart; an adjustment link coupled to the first rear rake arm assembly which is configured to control a distance of an end of the respective first rear rake arm assembly from a center line of the cart; and first and second inner supports, each of the first and second inner supports being pivotably coupled to the wheeled cart and being configured to pivot as a result of translation of the first and second rake arm positioners in the direction transverse to the direction of travel of the wheeled cart, and wherein a width between the first and second front rake arm assemblies is adjustable independent of a width between the first and second rear rake arm assemblies, and wherein the adjustment link maintains the distance of the end of the first rear rake arm assembly from the center line of the cart at a substantially constant value while the first rake arm positioner translates from a first position to a second position.