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Plaiting Device.

Description: Patent for an improved plaiting device that simplifies the steaming and pressing of dress goods.
Date: August 2, 1921
Creator: Knaur, Laura L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Safety-Casing Clamp

Description: Patent for a tool that supports the drilling and operating of oil and gas wells. Specifically, the patented tool allows a strong method of sealing the smaller casing inside the larger casing, as the larger casing is pulled out of the well. Includes illustrations.
Date: March 15, 1921
Creator: Angus, William M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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