Mechanical Operations: Grapple SkidderA Grapple Skidder
is a rubber tired four-wheel-drive machine consisting of a power plant, operator
enclosure, forward dozer blade and a maneuverable grappling device at the back of the
machine. These machines are generally used where feller buncher machines are working. The
grapple skidder backs into position adjacent to previously felled piles (bunches) of
trees. The operator opens and lowers the grapple onto the trunks of the trees and then
closes the grapple and raises the tree trunks slightly off the ground. The machine then
moves the trees through the woods to the landing and drops them off.