Patent ID: 8002004

Claim:
A timber-working head, comprising: a frame, a first delimb arm and a second delimb arm, the first and second delimb arms pivotally coupled to the frame, each of the first and second delimb arms comprising a delimbing cutting edge, and a single delimb cylinder mounted to both the first delimb arm and the second delimb arm so as to be floatable relative to the frame and operable to pivot the first and second delimb arms relative to the frame to open and close them, the first and second delimb arms otherwise operatively unconnected from one another allowing pivotal movement of each of the first and second delimb arms without corresponding pivotal movement of the other of the first and second delimb arms, wherein the second delimb arm comprises a cam stop defining a variable closure point for the first delimb arm, and the first delimb arm is configured to pivot into closed engagement with the cam stop such that the first delimb arm is closable into closed engagement with the cam stop to a first extent relative to a torso of the frame when the second delimb arm is positioned in a fully opened position and to a second extent relative to the torso when the second delimb arm is positioned in a fully closed position, the second extent greater than the first extent.