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in subjects: "Science and Technology - Tools"  
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Valve-Grinding Machine

Description: Patent for a simple valve grinding machine designed to be efficient and easy to use, as well as more secure (within a valve casing) than previous models.
Date: November 6, 1918
Creator: Branning, Willie F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

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

Flexible Joint

Description: Patent for a flexible joint provides "an improved and simplified device that is simple, durable and reliable in construction and effective and efficient in operation" (lines 10-13).
Date: November 16, 1915
Creator: Mooney, Thomas H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Reinforced Belt.

Description: Patent for a reinforced belt made with power transmission in mind. It has an improved body which is made up of steel U-shaped chain links embedded in flexible belt material. The belt is strong, flexible, durable, simple, and inexpensive.
Date: November 30, 1920
Creator: Shiner, Elliot E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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