Like this one? It was used to build the Mississippi and Red River levees in the 40s-50s and was abandoned in place up near Jonesville La. I was on a drilling rig nearby in 1987 and we all walked thru it. All the machinery is still inside (or was then) along with
View attachment 62243the huge bucket laid out at the end of the mast. I could have driven my truck into the bucket. All mechanical clutches, operated by steel linkage and cables with big return springs. No air clutches and no hydraulics anywhere. It had a big compressor driven of the front of the engine's crankshaft by belts and an even bigger air tank. It was likely barged down from Illinois, then walked along the river. The underneathlooked more like the bottom of a huge flatbottmed boat, with perforated steel ribs running all over. When they got to a digging site. they lowered the thing right down into the muddy land and when they got ready to move..walked, the legs needed help breaking suction from the mud. That's what the air was for, to pressure down thru the ribs into the muck and break suction from the mud.