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Rock Nabber Built From Old Plow Frame

"It'll easily dig out rocks up to 3 ft. in diameter and cost us virtually nothing to build," says Melvin Johnson, Tamarack, Minn., about the 3-pt. "rock nabber" he built out of an old moldboard plow frame.
Johnson started with a junked-out Allis-Chalmers 5-bottom moldboard plow and used the beams to make a vertical frame that supports a jaw-type apparatus. The lower jaw is stationary and consists of two 3-ft. long steel arms mounted at an angle away from the tractor. The upper jaw is a 4 1/2-ft. long single steel arm with a 2-ft. long hook at the end. It's raised or lowered by a hydraulic cylinder. To remove a rock he drops the lower arms into the ground and backs up at the same time until the arms are all the way under the rock. Then he lowers the top arm over the rock and raises the entire unit to lift the rock up out of the ground.
"It works so good that I once let some-one use it and never got it back so I had to make another one," says Johnson. "It's important to use high carbon plow frame steel because it's strong enough to keep from twisting or breaking."
Contact: FARM SHOW Followup, Melvin L. Johnson, Rt. 1, Box 67, Tama-rack, Minn. 55787 (ph 218 768-4687).


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1997 - Volume #21, Issue #3