UNT Libraries Government Documents Department - 10 Matching Results

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Nut-Lock

Description: Patent for a nut lock. Illustrations included.
Date: February 15, 1910
Creator: Davidson, Charles E. & Mauldin, Blake I.

Automobile-Jack

Description: Patent for an automobile jack that lifts the vehicle so that necessary repairs can be made and that relieves constant pressure of the tires.
Date: January 18, 1916
Creator: Davidson, Charles Edward

Wood Rod Elevator

Description: Patent for an improvement to rod lifters that prevents the rotation of the rods as well as locking jaws into their gripper positions. The locking and gripping is made more efficient and can release rods quickly.
Date: July 27, 1920
Creator: Davis, George F.

Fastener

Description: Patent for a fastener. This invention is an improved design for "securing the eyes to traces or tugs or fastening stirrup-leathers together" (line 9-11). Illustration included.
Date: December 1, 1903
Creator: Gardner, Eugene Silas

Pump.

Description: Patent for a new and useful improvements in pumps.
Date: March 15, 1898
Creator: Mauldin, Alfred W.

Trough-Valve

Description: Patent for an automatic float valve used in water troughs. Illustrations included.
Date: July 6, 1909
Creator: Mauldin, Blake I.

Animal-Trap

Description: Patent for an animal trap. Illustrations included.
Date: June 25, 1907
Creator: Nance, Joseph J.

Girth

Description: Patent for the improved securing or removal of a horse saddle, with illustrations.
Date: March 25, 1902
Creator: Owens, Robert. L.
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