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Valve-Operating Mechanism

Description: Patent for Valve Operating Mechanism that includes "new and useful improvements" (lines 5-6), and "has for its primary object to provide a simple and efficient means for operating a valve at a distance" (lines 10-12).
Date: September 10, 1918
Creator: Baurens, Jean Marie, Jr.
Partner: UNT Libraries Government Documents Department

Improvements in Apparatus for Concentrating Acid

Description: Patent for an apparatus for concentrating acid. This apparatus relates to concentrating weak acid taken from petroleum sludge.
Date: October 10, 1911
Creator: Gray, Elisha Burritt
Partner: UNT Libraries Government Documents Department

Method of Purifying Oils

Description: Patent for a new and useful improvement in the method of purifying oils, particularly applicable to cracked gasoline.
Date: January 10, 1922
Creator: Alexander, Clive M.
Partner: UNT Libraries Government Documents Department

Tool Joint.

Description: Patent for a screw-threaded tool joint used for drill pipes on rotary drilling rigs.
Date: August 10, 1920
Creator: Lyle, Henry Claude
Partner: UNT Libraries Government Documents Department

Pan Lifter and Turner.

Description: Patent for a pan lifter and turner using a bent handle, a curved plate is secured at the end of the bent handle; extending upward from the curved plate with a series of teeth to engages the crimped rim of a pan for lifting. At both ends of the curved plate provided with curved notches or recesses to receive and engage the rim of a pan for turning. Illustration is included.
Date: February 10, 1891
Creator: Ericson, John
Partner: UNT Libraries Government Documents Department

Polishing-Machine

Description: Patent for a metal polisher. Illustrations included.
Date: December 10, 1907
Creator: Nichols, Charlie M.
Partner: UNT Libraries Government Documents Department

Dynamo Electric Machine

Description: Patent for Improvement of Dynamo-Electric Machines. The improvement turns electric energy into mechanical entry.
Date: August 10, 1920
Creator: Reynolds, William T. & Reynolds, Bruce A.
Partner: UNT Libraries Government Documents Department

File-Cabinet.

Description: Patent for combination safe or revolving file cabinet to provide a safe operable means for compartments of batches of papers. Illustration is provided.
Date: August 10, 1915
Creator: Whitlow, Alamander
Partner: UNT Libraries Government Documents Department

Ignition-Tube Heater

Description: Patent for "fire prevention, or explosions, by gas or oil surrounding the heater of the ignition-tube of a gas engine." (lines 11-14) including illustrations.
Date: August 10, 1915
Creator: Kincade, Elmer C.
Partner: UNT Libraries Government Documents Department

Screw.

Description: Patent for a new and improved screw. This design consists in "[a] screw, the body and shank of which are of corresponding diameter throughout their length, the shank terminating in a rounded end, and the shank and body being provided with a longitudinal straight channel extending throughout their lengths, one of the terminal shoulders of the channel being removed" (lines 4-10).
Date: June 10, 1890
Creator: Ericson, John
Partner: UNT Libraries Government Documents Department

Boring-Bit.

Description: Patent for a boring drill. The invention creates a new means "for connecting the constituent members of the head so as to provide novel means for assembling the head with a driving element" (lines 19-22).
Date: June 10, 1913
Creator: Larnce, John B.
Partner: UNT Libraries Government Documents Department

Comb.

Description: Patent for an electronic heating comb providing an electric heating element.
Date: November 10, 1920
Creator: Caneavri, Joseph Ping.
Partner: UNT Libraries Government Documents Department
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