A backhoe has a main boom mounting a jib boom rotatably and pivotally. The jib boom journals a yoke about one axis and a bucket is pivotal on the yoke about a transverse axis and a hydraulic cylinder drive having a double-ended piston extending between arms of the yoke is adjustable to tilt the bucket to keep its lower edge level when desired.
Dr. Ross graduated from the University of Buffalo, SUNY School of Medicine and Biomedical Sciences in 1971. He works in Ellicott City, MD and specializes in Internal Medicine.