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in subjects: "Science and Technology - Tools"  
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Mechanical Packer.

Description: Patent for improvements towards the mechanical packing apparatus. The invention will connect the apparatus to power-operated presses, like that of the cotton press.
Date: January 25, 1921
Creator: Cameron, Theodore R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Monkey-Wrench.

Description: Patent for a monkey wrench that "can be adjusted for different sizes of nuts by the same hand which is using the wrench...and which may also be used as a pipe wrench" (lines 16-21).
Date: January 11, 1921
Creator: Kirkpatrick, Otey R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Abrading Element For Tire-Patch Containers

Description: Patent for an improved tool that is affixed to tire-patch containers. It is used for abrading the surface of a tire to effectively roughen it (without the use of sandpaper) to allow the adhesion of a patch. Includes illustrations.
Date: January 4, 1921
Creator: Duffy, Jesse A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Center-Gage and Micrometer

Description: Patent for improvements to a center gage and inside micrometer to "provide central support for dividers" (lines 15-16) including illustrations.
Date: January 11, 1921
Creator: Snell, Charles
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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