Multiple-pattern tree shaking mechanism

摘要

A shaker head including three eccentric weights rotatably mounted on a common shaft is carried by a tractor. A mechanism for manipulating the shaker head allows the user to engage the trunk or limbs of a tree having fruit, nuts or the like ready to be harvested. The eccentric weights are driven by various combinations of motors and sheaves to impart a plurality of distinct shaking patterns to the tree.