Rock digger attached to dozer blade on Mpls Moline u propane powered tractor
Digging out buried rocks in fields is a lot easier for us since we built a rock digger to attach to the dozer blade on my Minneapolis Moline "U" propane-powered tractor. It's easy to put on and take off and I've dug out rocks up to 5 ft. in dia. In one field I pushed out 81 rocks ranging from 2 to 5 ft. in an hour and 10 min. I made the two digging shanks with beams from a 3-bottom plow. A crossbar at the top or the shanks hooks over the top of the blade and a heavy iron frame hooks under the bottom edge of the blade. The shanks extend down about 21 in. below the bottom of the blade. I shove them into the ground in front of a rock and go forward and lift up at the same time. Sometimes I have to drop the blade again while going up to catch the rock better. I welded two teeth made out of 1 1/8-in. steel to the bottom of the shanks to help grab hold of rocks. (0!-Iver P. Howland, Grygla, Minn. 56727)
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