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Lawn Mower

Description: Patent for a lawn mower in which the means for adjusting the intermediate blade has been created so that a groove for a predetermined depth can be cut, and easy removal of the blade when it is desired to sharpen the same. Additionally, a ground-engaging roller is included to keep the machine at the same level so that the knife will cut into the ground at an even depth.
Date: December 5, 1919
Creator: Coniglio Carmelo
Partner: UNT Libraries Government Documents Department

Improving Oils.

Description: Patent for a method of improving the quality of more volatile petroleum oils, such as gasoline and burning oils.
Date: December 23, 1919
Creator: McAfee, Almer M.
Partner: UNT Libraries Government Documents Department

Heel-Sweep.

Description: Patent for a "heel sweep for a plow. The invention aims to provide a sweep which will possess great strength..."
Date: December 16, 1919
Creator: Kelly, George Dudley
Partner: UNT Libraries Government Documents Department
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