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Process for Hardening Copper.

Description: Patent for a process of hardening copper to prevent bending and scaling of the metal. The process involves heating copper to a high temperature (1370 degrees Fahrenheit) and then subjecting it to continual pressure through hammering it until cold.
Date: February 24, 1920
Creator: Beckham, Dewitt T.
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Partner: UNT Libraries Government Documents Department

Safety-Trap.

Description: Patent for class of steam valve safety traps to prevent the interference of heavy particles with the flow of steam ensuring efficient working of the machine.
Date: July 25, 1916
Creator: Bird, David R.
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Partner: UNT Libraries Government Documents Department

Improved Double Pincers.

Description: Patent for the improvement of double pincers by way of "double jaws, by which both sides of the shanks of a boot of shoe can be clamped and held at the same time."
Date: March 29, 1870
Creator: Maund, William
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Partner: UNT Libraries Government Documents Department

Magneto-Contact.

Description: Patent for magneto contacts, designed for easy removal, cleaning, and replacement, without short circuits, featuring novel construction features and parts arrangements.
Date: April 26, 1921
Creator: Rigsby, Virgi
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Partner: UNT Libraries Government Documents Department

Crude-Oil Burner.

Description: Patent for an improved burner that is safe from the danger of exploding and can be made cheaply, including instructions and illustrations.
Date: August 7, 1917
Creator: Hudgens, John Albert
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Partner: UNT Libraries Government Documents Department

Churn.

Description: Patent for Churn for mixing liquids. The invention's construction includes a sturdy stand with a crank handle, that when rotated, allows a wheel to turn on the shaft. The simple design allows for inexpensive construction.
Date: May 6, 1913
Creator: Burns, John F.
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Bed Slat Holding Means

Description: Patent for an invention that "relates to bed-slat-holding means; and the object of the same is to provide simple and effective devices for holding the end of a bed-slat, which is in part carried by the latter and the ledge of the side rail and operating to prevent loose assemblage of the slats with bed-rails and obviate a tendency to easy disengagement and also to maintain the opposite bed-rails in parallel relation and obstruct warping or lateral expansion" (lines 8-21). Illustrations are incl… more
Date: January 2, 1902
Creator: Cooper, Alexander R.
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Partner: UNT Libraries Government Documents Department

Bolsters for Log Wagons

Description: Patent for a bolster for use with log wagons by aiding in the arrangement of varying sizes of log loads. Illustration included.
Date: December 14, 1909
Creator: Warren, John Thomas
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Partner: UNT Libraries Government Documents Department

Burial-Casket

Description: This patent is for a burial casket. One of the aims of this casket is to obviate the necessity of using metallic securing devices which now commonly corrode or deteriorate from moisture and expose the body of the corpse to moisture in the ground as well as to parasites and burrowing animals.
Date: March 26, 1918
Creator: McKinney, Jacob D.
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Partner: UNT Libraries Government Documents Department
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