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Process for Refining and Purifying Oils.

Description: Patent for "processes for purifying oils, especially petroleum, and has for its object the removal of impurities and the neutralization of acids, and the reduction of the cost of refining oil by simplifying the process and reducing the length of time usually required for completing the purification" (lines 9-16).
Date: September 15, 1910
Creator: Lasher, David F.
Partner: UNT Libraries Government Documents Department

Improvement in Combined Dish and Clothes Washer.

Description: Patent for a combined dish and clothes washer that has a tilting shelf for draining, attached to the sink for washing.
Date: August 15, 1876
Creator: Jackson, Ansberry Chapman
Partner: UNT Libraries Government Documents Department

Transmission-Gearing.

Description: Patent for an improved gear set adapted for transmitting power to the main driving wheels of farm tractors, the gear set embodying simple and efficient means of effecting a reversal of travel without any chance of gear stripping, as well as the whole transmission gearing encompassing less space.
Date: February 15, 1921
Creator: Blumberg, Hamilton G.
Partner: UNT Libraries Government Documents Department

Fire Extinguisher.

Description: Patent for a new and improved fire extinguisher. This design consists in "[t]he combination of the expansible rod, the sweep arm or lever pivotally connected thereto, the horizontal rod, the doors, the cord connected to said doors and to the rod and adapted to be disengaged from said rod by the sweep-arm, the steam-pipe provided with a cut-off valve, and the weight supported normally in an elevated position by the sweep-arm and adapted to be released thereby to open the valve" (lines 72-81).
Date: January 15, 1889
Creator: Lutcher, Henry J.
Partner: UNT Libraries Government Documents Department

Temperature-Regulator

Description: Patent for "improvements in thermostatic devices for automatically regulating the temperature of lumber-driers" (lines 8-10).
Date: January 15, 1889
Creator: Lutcher, Henry J.
Partner: UNT Libraries Government Documents Department
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