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in subjects: "Science and Technology - Tools"  
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Interlocking-Bar Grating for Jails.

Description: Patent for gratings used in jails. "In these structures as ordinarily made upright and horizontal bars are provided which are located at right angles to each other, these bars being necessarily secured together at their points of intersection to prevent their being spread apart" (lines 11-16).
Date: November 25, 1902
Creator: Youngblood, David Franklin
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Tool for Truing and Dressing Commutators.

Description: Patent for a tool "for truing and dressing the commutators of dynamo motors... especially designed for truing and dressing the commutators of motors employed for propelling cars" (lines 9-14).
Date: June 25, 1907
Creator: Frick, Claus Henry
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

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

Hoof-Cleaning Tool.

Description: Patent for an improved farriers tool that cleans animals' hoofs that is a specially designed hook. It works quickly, thoroughly, and easily.
Date: July 25, 1893
Creator: Jenner, Robert C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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