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Visual Automatic-Setback Annunicator.

Description: Patent for an indicator dial controlled by magnets to read out a display for an instrument via a lever.
Date: July 24, 1917
Creator: Stephens, Lee
Partner: UNT Libraries Government Documents Department

Hydraulic Pressure and Time Indicator

Description: Patent for hydraulic pressure and time indicator for "recording the times when hydraulic cylinders are in operation and to indicate when the cylinders commence work or reach the required pressure" (lines 10 - 14).
Date: December 24, 1918
Creator: Helm, Clyde D.
Partner: UNT Libraries Government Documents Department

Gas Generator.

Description: Patent for a gas generator. The object is intended to efficiently regulate gas in cars.
Date: November 24, 1914
Creator: Walton, James C. & Wisherd, John A.
Partner: UNT Libraries Government Documents Department

Pass Book

Description: Patent for a book cover that can be easily written on with ink.
Date: June 24, 1914
Creator: Roystone, W.
Partner: UNT Libraries Government Documents Department

Feed-Trough

Description: Patent for a feed trough for chickens and other small animals.
Date: September 24, 1912
Creator: Davis, James H.
Partner: UNT Libraries Government Documents Department

Rock Drill

Description: Patent for a rock drill. This invention is designed for use with a pitman driven by a crank movement or a direct ratchet connected to a driving rod. Illustrations included.
Date: December 24, 1912
Creator: Speer, George F.
Partner: UNT Libraries Government Documents Department

Auxiliary Air-Feed for Carbureters.

Description: Patent for a carbureter that improves auxiliary air feed, wherein gradually increased quantities of air are harnessed as the speed of the motor increases.
Date: October 24, 1916
Creator: Bills, Thomas M. & Harvey, Thomas H.
Partner: UNT Libraries Government Documents Department

Crude-Oil Burner.

Description: Patent for a crude oil burner for stoves, which will convert most of the oil put into the stove into gas to provide better heating of the stove.
Date: May 24, 1910
Creator: Bass, Robert E.
Partner: UNT Libraries Government Documents Department
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