The earliest scrapers were little more than drag pans pulled by horses or even men. But when a contractor put two wheels on the pan in 1877, the two-wheel scraper came into being. The advantage was that the scraper could now lift its load, making it possible to handle a greater payload and carry it easier. These machines began to proliferate, and soon hundreds of two-wheel scrapers might be seen on the same jobsite, requiring hundreds of horses and teamsters.
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