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Glazing-Bar

Description: Patent for device to securely hold a pane of glass on roofs, skylights, etc. without the use of putty.
Date: April 16, 1901
Creator: Folse, Louis D.
Partner: UNT Libraries Government Documents Department

Hitching Strap

Description: Patent for a hitching strap to prevent animals from running away.
Date: April 8, 1913
Creator: Stifter, Joseph
Partner: UNT Libraries Government Documents Department

Guide Device For Ironing-Machines

Description: Patent for a device that guides Ironing Machines.
Date: April 8, 1913
Creator: Terry, Mosley J.
Partner: UNT Libraries Government Documents Department

Testing Device.

Description: Patent for a testing device that can be used to test the condition of the pistons in an internal combustion motor. The device can also be used as an "air pump, or grease or oil gun." (lines 30-31).
Date: April 13, 1920
Creator: Harpst, Frederick E.
Partner: UNT Libraries Government Documents Department

Hat-Blocker

Description: Patent for "new and useful improvements hat-blocker (lines 8-9)."
Date: April 30, 1918
Creator: Milligan, Clifford V.
Partner: UNT Libraries Government Documents Department

Hair-Clipper

Description: Patent for a hair-clipper designed for barbers' and household use, designed to be used without discomfort for the patient.
Date: April 30, 1918
Creator: Sammons, Loney H.
Partner: UNT Libraries Government Documents Department

Drilling Apparatus

Description: Patent for a drilling apparatus able to simultaneously bore into objects and rearm itself.
Date: April 29, 1919
Creator: Layne, Mahlon E.
Partner: UNT Libraries Government Documents Department

Drill

Description: Patent for a new drill that is used for pipes in wells, including illustrations.
Date: April 1, 1913
Creator: O'Brien, Robert P.
Partner: UNT Libraries Government Documents Department

Driving Gearing for Motor Vehicles

Description: Patent for a driving mechanism that allows all four wheels of a motor vehicle to be used for traction purposes.
Date: April 20, 1915
Creator: Twyford, Robert E.
Partner: UNT Libraries Government Documents Department

Sample-Taking Device

Description: Patent for new and useful improvements for devices to take samples from wells. Specifically designed to take samples from hard formations, such as rock or other hard surfaces, being pierced from the drill from any depth in a well.
Date: April 5, 1921
Creator: Dodds, Redus D.
Partner: UNT Libraries Government Documents Department

Sample-Taking Device.

Description: Patent for a device that helps with sample collection at oil drilling sites. The tool is cylindrical and can be placed in the ground to help with sample collection. This patent includes examples of how the tool can be used and tool specifications.
Date: April 15, 1919
Creator: Church, Walter Lee
Partner: UNT Libraries Government Documents Department

Sampling Device for Artesian Wells

Description: Patent for a sampling device for artesian wells to detect when oil has been reached.
Date: April 23, 1912
Creator: Bettis, William I.
Partner: UNT Libraries Government Documents Department

Wind Wheel

Description: Patent for a wind wheel. Illustration included.
Date: April 11, 1905
Creator: Sharp, Marvin A. & Sharp, Bird H.
Partner: UNT Libraries Government Documents Department

Rotary Engine.

Description: Patent for improvements to rotary engine designs.
Date: April 22, 1884
Creator: Griffin, George L.; Shoup, William A. & Cade, James Robert
Partner: UNT Libraries Government Documents Department

Power-Transmitting Mechanism

Description: Patent for improvements in a power transmitting mechanism.
Date: April 29, 1919
Creator: Smith, Robert W. J.
Partner: UNT Libraries Government Documents Department

Rotary for Well Turing

Description: Patent for a rotary for well tubing. Illustrations included.
Date: April 26, 1910
Creator: Hall, Samuel N.
Partner: UNT Libraries Government Documents Department

Exercising Device.

Description: Patent for an "exercising device for teaching beginners the correct touch on the piano to systematically develop finger [technique]." (Lines 9-11) Includes instructions and illustrations.
Date: April 30, 1895
Creator: Felden, Oscar
Partner: UNT Libraries Government Documents Department

Flap-Valve

Description: Patent for a flap valve for use in blowing engines that increases the life of the valve plates.
Date: April 2, 1912
Creator: Scott, Clarence N.
Partner: UNT Libraries Government Documents Department

Farm-Gate

Description: Patent for a farm gate that is easy to manufacture and assemble.
Date: April 13, 1915
Creator: Cardwell, Charles E. & Jenkins, R. E. Lee
Partner: UNT Libraries Government Documents Department

Automobile Body.

Description: Patent for an automobile body that is designed for people who enjoy doing outdoor activities. Compares this design to the current design of what is called "touring cars."
Date: April 15, 1913
Creator: Saxon, Frank
Partner: UNT Libraries Government Documents Department

Cotton Opener and Cleaner.

Description: Patent for cleaning and renovating cotton and other fibrous materials that are found in the lint that falls from the gin in the regular ginning process.
Date: April 18, 1916
Creator: Garner, James C. & Reynolds, Charles S.
Partner: UNT Libraries Government Documents Department

Bit-Frame

Description: Patent for a bit frame for holding ceiling cleats in place so that screws can be driven at each end. Illustrations included.
Date: April 9, 1912
Creator: Lagarde, Everette S. & Angenend, Peter A., Jr.
Partner: UNT Libraries Government Documents Department

Cinder-Guard

Description: Patent for cinder guard.
Date: April 28, 1903
Creator: Morse, Samuel Finley Breese & Tuggle, Samuel Ritchie
Partner: UNT Libraries Government Documents Department

Automatic Train-Pipe Coupling

Description: Patent for a train pipe coupling which connects automatically and does not come loose when the train is going around curves.
Date: April 12, 1910
Creator: Blair, Oliver C.
Partner: UNT Libraries Government Documents Department
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