Caterpillar Tractor Co.

Roger M Smith

Gary P Freese

Eugene M Wilson

A push-pull coupling (18) for wheel supported power scrapers (10 and 14) has a coupling means (26) supported for cushioned fore-and-aft movement in a mounting frame (21) at the rear of a first power scraper (10) and a power operated bail (39) at the front of a second power scraper (14). The coupling means (26) has a rearwardly facing hook (37) against which a bight (39a) of the bail (39) may push, and a forwardly facing hook (38) against which the bight (39a) of the bail (39) may pull.

Push-pull coupling for power scrapers

A bulldozer including a vehicle frame, a dozer blade forwardly of the frame, a lift linkage movably secured to the frame and including two spaced arms extending longitudinally of the frame and connected to the blade, at least one motor connected to the frame and to one of the blade and the lift linkage for selectively elevating the blade relative to the frame, and a stabilizing linkage interconnecting the frame and one of the blade and the lift linkage including a first link mounted intermediate its ends on the frame for rotation about an axis extending longitudinally of the frame, and second and third elongated links each having an end pivoted to the first link on opposite sides of the axis and extending in opposite directions therefrom, the other ends of the second and third links being pivoted to one of a corresponding arm and blade.

Blade stabilizing linkage for a bulldozer

In earthmoving equipment, such as a scraper, an adjustable feedthrough protective bit is mounted on each side wall of the bowl in position to protect the leading edges of the bowl in the vicinity of a cutter blade extending between said side walls. Guide straps or abutments are provided on the walls to hold each bit in fixed position on the bowl and a novel arrangement of apertures and openings are provided in each bit and in the wall of the bowl to facilitate effectively securing the bit to the bowl. The bit configurations may be such as to permit end-for-end reversal of orientation of the bit and to provide for use of the bit on either side of the equipment.

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Joliet, IL, United States of America

Roger M Smith