A vibrating earth ripping machine which includes a main frame and a vibrating frame which is pivotally connected to the main frame by a pair of movable thrust absorbing arms. The vibrating frame extends beyond the main frame rear end, and is secured to a transversely extending tool bar having a plurality of downwardly projecting ripper tines detachably secured thereto. A mass is rotatably mounted on the tool bar for eccentric mass distribution during rotation about a horizontal axis. A resilient vibration damping system is mounted between the main frame and vibrating frame to damp vibratory movement imparted to the vibrating frame by the rotating mass.
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