Patented in 1875, and improved in the next few years, it was in production till 1925. Requiring 5 teams of horses for heavy work, the grader could be used for regular work with 3 or even 2 teams of horses. The angle and attitude of the blade were adjustable by the operator while in motion with the use of handwheels. The rear axle extension (below) allowed the horses to stay in the road while the blade was used for ditching and for moving a heavy furrow of dirt from the side to the middle of the road with slipping sideways.
The internal combustion powered machines replaced this unit.
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