MOUNTING OF DOZER BLADES

This specification discloses a method and a mounting assembly for attaching a dozer blade to a tractor characterized by enabling the blade to be set to a desired degree of pitch and tilt without inducing twist into or causing other undesirable concentrations of stresses in the mounting assembly and by enabling side booms of the mounting assembly to be fit closely to the tractor on which the blade is mounted. The mounting assembly has a rigid frame for attaching to the tractor; an independent pitching means connecting the top center of the blade with the rigid frame for effecting pitch of the blade; and independent tilting means including at at least one end of the blade a bell crank connected therewith for moving that end of the blade up and down with respect to the rigid frame in response to torque from a means inter-connected between the other end of the bell crank and the rigid frame and operable to rotate the bell crank about a fulcrum axis on the rigid frame. Also disclosed is a preferred embodiment in which each end of the blade is individually movable up or down by rotation of its respective bell crank about respective fulcrum axes on the rigid frame. Other elements necessary or advisable for efficient operation are also disclosed, even though some are conventional.