Grapple accumulation arm for log grapple machine

A grapple system comprising:

• a first grapple tong and a second grapple tong, the first and second grapple tongs pivotable between an open position and a closed position and at least partially bounding a first internal area when the first and second grapple tongs are in the closed position;
• and
• a first accumulation arm and a second accumulation arm, the first and second accumulation arms pivotable between an open position and a closed position and at least partially bounding a second internal area when the first and second accumulation arms are in the closed position, the second internal area being smaller than the first internal area, the first and second accumulation arms independently operable with respect to the first and second grapple tongs to retain material within the second internal area when the first and second grapple tongs move from the closed position to the open position,
• wherein:
• the first and second grapple tongs are movable relative to a grapple box about a grapple tong axis,
• the first and second accumulation arms each include a respective first section and a respective second section,
• each respective first section is movable relative to the grapple box about a respective first section axis,
• each respective second section is movable relative to each respective first section about a respective second section axis that is offset from the respective first section axis,
• each respective second section is selectively positionable between an extended position and a retracted position by moving each respective second section about the respective second section axis relative to the respective first section, the grapple system further comprising respective biasing members configured to bias each respective second section toward the extended position, and
• the position of the first and second accumulation arms is adjustable based at least in part on a signal from at least one of a grapple tong position sensor or an accumulation arm position sensor.