Historical Construction Equipment Association (HCEA)

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The Russell Motor Hi-Way Patrol, first developed in 1919, was the first known motor grader.
Early Motor Graders
This rolling Swiss Army knife is the Western Wheeled Scraper Road Planer and Finisher. It combines a scarifier, wing blades to gather material to the crown, a trailing drag to finish the surface, and a drum roller.
Road Planers and Shapers
In a typical scarifier application, a Holt T-35 crawler tractor is breaking up a hard-packed roadbed prior to trimming and concrete paving.
Scarifiers and Rippers
Offset grading near Clinton, IL, with an Adams Road King and a Rumley Oil Pull tractor.
Graders Pulled by Tractors Improve Maneuverability
The leaning wheel principle on full display, with two 12-ft. graders forming a ditch in McLean County, IL. The first grader slopes the outside bank and places spoil in the ditch, and the second draws it out to the roadbed while trimming the inside bank.
Improved Material Handling with Leaning Wheel Grader Designs
Tree removal wasn’t a typical application for a pull grader, but Rome Manufacturing demonstrated the robust construction of one of its larger graders by having it uproot a roadside tree without suffering distortion or damage.
Basic Pull Grader Designs
Towards the end of the horse-drawn era, this aptly named Galion Pony grader is drawn by its properly rated horse power.
Pull Grader Power Ratings
The first modern four-wheel grader, Samuel Pennock’s American Champion of 1877. It was also the first to have an adjustable rear axle. Its design was essentially unchanged until 1925.
Pull Grader Basics
A Hamm DV 6 K combination in its natural environment.
Combination Rollers
1966 advertisement for the Pactor Trashmaster, the earliest known purpose-built landfill compactor.
Landfill Compactors
This 1968 Raygo 400 is part of its Rascal line, one of the most successful early series of self-propelled vibratory compactors.
Vibratory Drum Compactors
An International Vibro-Tamper VT6-4 plate compactor.
Plate Compactors
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