Cmi Limited

Baker International Inc.

Larry W Teel

Donald W Smith

George W Swisher, Jr

Donald L Bailey

Brian K Davis

The invention is directed to a connection between the equalizer beam and the walking beam in a walking beam type oil well pumping unit, the walking beam having a tail shaft rotatably mounted generally perpendicular to the longitudinal axis of the beam. The connection comprises an equalizer beam and two support members spaced from one another lengthwise of the equalizer beam and rigidly secured to the beam, each support member having an arm extending outwardly toward the other support member, and each arm having a curved downwardly-facing bearing surfaces adapted to be engaged by a respective end of the tail shaft. A retainer associated with each support member holds its respective end of the tail shaft in engagement with the downwardly-facing bearing surface when forces tending to separate the shaft from the bearing surface are applied to the shaft.

Connection between the equalizer beam and the walking beam of a walking

A wheeled roadway planing machine in which the wheels are pivotable by individual hydraulic rams for steering purposes. Each ram is controlled by a rotary, blocked-center valve and the valves are simulataneously actuated by a linkage which establishes a pattern of off-center displacements of their valve members to initiate pivoting of the wheels. The valves are mounted on pivotable wheel representation members which pivot with the wheels, via cables connecting the representation members to support shafts upon which the wheels are mounted, to return the valves to their blocked-center positions as the wheels pivot to a pattern of positions on the chassis of the machine similar to the pattern of displacements of the valve members resulting from operation of the linkage. A cutting drum is mounted on the chassis to form a cut in the roadway, such cut having a shape determined by the position of the chassis on the support shafts. Such position and the depth of each side of the cut are shown by scales, mounted on the chassis near each end of the drum and near the rear end of the chassis, and pointers mounted on rods positioned by the roadway surface. String lines, extending between supports pivotally attached to the ends of the chassis, provide a grade reference for control of the position of the chassis relative to the roadway. Portions of the supports which engage the roadway are laterally positionable on the chassis for selection of a grade line.

Steering and cutter drum positioning in a paved roadway planing machine

Road planing machine

An improved sidebank excavator for removing earth from the side of a hill or other embankment, the excavator having a fixed, bidirectional horizontal earth removal assembly; a rotating, bidirectional vertical earth removal assembly; a conveyor assembly for conveying particulate material deposited on a receiving portion thereof to a discharge portion thereof remote from the receiving portion; and a plurality of independently vertically adjustable track drive assemblies.

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Yukon, OK, United States of America

Larry W Teel