Patent ID: 7037064

Claim:
An assembly mountable on the boom of a machine for grappling objects, comprising: a dipper stick pivotally connectable to said boom; a tool connected to said dipper stick, pivotal about a first axis relative to said dipper stick; means operatively interconnecting said dipper stick and said tool for pivoting said tool about said first axis; an arm member having a first section connected to an underside of said dipper stick for pivotal movement about a second axis and a second section connectable to said first arm section for pivotal movement relative to said first arm section about a third axis, one of said arm sections having a curved bearing surface with a notch therein and the other of said arm sections having a biased roller engaging said bearing section whereby said roller may be received in said notch to displaceably position said second arm section relative to said first arm section, and ride on portions of said curved surface when a force in a certain direction is applied to said second arm section; and a chain connected at one end to said underside of said dipper stick and connected at another end thereof to said arm member, whereby when said assembly is operated in a grappling mode, objects may be grappled by maneuvering said chain in an extended condition against a side of an object and then pivoting said tool to sieze said object between said chain and said tool.