Harvey Rust submitted this patent for an adjustable scraper blade mount on April 1, 1949.

“This invention relates to scraper blades of the bulldozer type such as used in leveling or pushing snow, dirt and the like, and in particular a blade mounting for removably attaching a blade to the front of a Jeep or the like wherein the elevation of the blade is readily adjustable and in which the blade is hinged and resiliently held to provide tilting movement when the lower edge of the blade engages a fixed obstruction.”