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in subjects: "Sharpening of tools"  
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Lawn-Mower Sharpener.

Description: Patent for a new device that improves lawn mower sharpeners, including illustrations. It is a detachable device that attaches directly to the lawn mower and sharpens the blades while in use.
Date: October 17, 1922
Creator: Lancaster, Edmund Banning
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pencil-Sharpener.

Description: Patent for a new and improved pencil sharpener "which will be simple and inexpensive in manufacture, highly effective in use, durable in service, and a general improvement in the art" (lines 20-23), including illustrations.
Date: March 22, 1921
Creator: Scougale, Malcolm
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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