The first rubber-tired, self-propelled, purpose-built motor grader was the Auto Patrol, introduced by Caterpillar in 1931. This machine embodied several major design breakthroughs. Rather than ...

The pull grader was the standard machine for road maintenance from the mid-1800s until motor graders rendered them obsolete in the 1930s, and several elements factored into their design: Drawbar. The ...