Inventors:
Francis H. Hart - Sao Paulo, BR
Carl A. Higar - Mount Zion IL
Assignee:
Caterpillar Tractor Co. - Peoria IL
International Classification:
E02F 376
E02F 385
Abstract:
A control system for circle mounted motor grader blades to enable adjustment of the circle and blade supported thereby about the axis of the circle is disclosed. The system includes a circle holding mechanism for reducing wear between the circle and the mounting structure therefor, which circle holding mechanism also automatically compensates for inaccuracies in operation due to such wear and to the tolerances between the circle and the mounting structure required to facilitate adjustments in the relative positioning thereof. This circle holding mechanism includes a wedge device which forces the circle into a shoe element to hold the circle in fixed relationship with respect to the mounting structure therefor.