Abstract: Form panel supporting walers (32, 34) are secured in crossed relationship by an assembly having inner and outer right angle-shaped members (10, 12) engageable with opposite sides of the walers, and clamp means to draw the members toward one another. The clamp means comprise a bar (18) fixed to one of the members (10) and extending slidably through the other of the members (12), and a wedge (24) extending through the bar (18) for engagement with said other member (12).

Abstract: A tie rod assembly to secure form panel elements in edge to edge engagement and tie opposed panels made of such elements in spaced apart relationship. The assembly employs a tie rod having a length less than the distance between the opposed panels and gripper mechanisms releasably engageable with the ends of the tie rod and proportioned for extension through tie rod openings formed in the panels. Key elements are engageable with the gripper mechanisms and the panel elements to lock the mechanisms in engagement with the rod and secure the panel elements in place. The rod is provided with enlarged heads at either end thereof for engagement by the gripper mechanisms and, in a preferred embodiment, the sides of the head are flattened.

Abstract: An earth working apparatus is disclosed including means for removably coupling a compacting roller into operative engagement with a hydraulically manipulated boom while simultaneously maintaining the excavating bucket of the apparatus in its operative association with the boom. The coupling means includes a specially designed link which connects the hydraulic means of the boom to the bucket and which is adapted to receive and engage the compacting roller upon upward movement of the boom.

Abstract: An improved trimmer type road construction apparatus, particularly useful in applications requiring a high degree of maneuverability and control flexibility, which is steeringly controlled by turning a centrally disposed front track assembly in such a manner that the main frame can be raised and lowered relative to the front drive assembly without a loss of steering control; and which has an automatic steering, grade and slope control constructed to be automatically adapted to particular job specifications and locations. The trimmer also has a reclaimer assembly for removal of the excavated earth, the reclaimer assembly being automatically positionable to deposit the excavated earth in predetermined, controlled positions about the trimmer.