Patent ID: 7942599

Claim:
An agricultural harvesting machine comprising: a crop pickup system having a driving element; a shaft; a feeder system having rotor having a driving element, the driving element of the rotor mounted to the shaft for rotation therewith; and a lost motion coupling comprising: a driving member mounted to the shaft for rotation therewith, and a disc being freely rotatably mounted to the shaft and connected to the driving element of the pickup by a shear member, the disc further having a driven member configured for receiving a force from the driving member mounted to the shaft, the lost motion coupling forming a torque path between the driving member mounted to the shaft and the driving element of the pickup through the disc and shear member, for rotating the pickup in a first direction corresponding to motion of the rotor; wherein the lost motion coupling is configured to permit reversal of rotation of the shaft and connected driving element of the rotor without corresponding movement of the pickup system and driving element thereof.