UNT Libraries Government Documents Department - 6 Matching Results

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Collapsible Rim.

Patent for new and useful improvements related to demountable rims that are collapsible. This improvement facilitates the removal of a tire in an easier and expeditious manner.

Date: May 20, 1919

Creator: King, Willis C.

Concrete Step Mold

Patent for concrete that when used multiple times will produce a flight of stairs.

Date: March 20, 1917

Creator: Baldwin, Thomas H.

Grain-Door for Cars

Patent for a door for grain containers. Illustrations included.

Date: February 20, 1912

Creator: Miller, Rudolph Charles

Starting Meachanism for Explosive Engines

Patent for a mechanism for starting internal combustion engines, and particularly that form of starting devices in which a torsion spring is used.

Date: June 20, 1916

Creator: Appleman, Boyd K.

Utilizing Sulfur-Containing Petroleum.

Patent for a method of removing sulfur from Beaumont petroleum and converting it into sulfuric acid.

Date: February 20, 1912

Creator: Robinson, Clarence I.

Wire-Winding Machine

Patent for a wire winding machine for making well screens.

Date: August 20, 1912

Creator: Eastham, Albert Lindsay