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Metallic Compound.

Description: Patent for "the process of making alloys for journal-bearings" (lines 42-43) of more durable quality than those formed with "brass and bronzes" (line 10).
Date: August 4, 1885
Creator: Kavanaugh, Frank
Partner: UNT Libraries Government Documents Department

Car Coupling.

Description: Patent for a new and improved coupling for railroad cars. This design "consists in the combination, with a draw-head, of an L-shaped lever pivoted in the same and provided at its angle with a lug, which L-shaped lever has a coupling-pin suspended from the end of the long arm, and has its short arm passed into an aperture in the inner end of a bar sliding in the bottom of the draw-head, whereby when the lug is depressed the coupling-pin will be raised and the bar in the draw-head will push the link out from the end of the draw-head" (lines 7-17).
Date: June 12, 1883
Creator: Appell, Charles E.
Partner: UNT Libraries Government Documents Department

Car Coupling.

Description: Patent for automatic freight car coupler, including illustrations. The coupler "obviates the necessity of any one going between the cars while being coupled" (lines11-13).
Date: September 26, 1882
Creator: Chapman, John Edward Howard
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

Car-Coupling.

Description: Patent for a new and improved coupling for railroad cars. This design "relates to car-couplings; and it has for its object to provide a device of this character which shall be so constructed as to couple the cars automatically as they are brought together, and one which will securely hold the cars coupled, and yet allow a free movement of the same in turning curves" (lines 9-15).
Date: December 16, 1884
Creator: Jourde, Alfred John
Partner: UNT Libraries Government Documents Department

Improvement in Blow Offs For Boilers

Description: Patent for Improvement in Blow Offs For Boilers provides details of the construction of the blow off device with two labeled Figures and descriptive text. Also includes the significance of the blow off device and how it will improve locomotive travel by conserving water.
Date: September 10, 1872
Creator: Husted, Esbon Forrest
Partner: UNT Libraries Government Documents Department

Alarm Device.

Description: Patent for an alarm device "to be used in connection with a boiler and operatively connected with the steam whistle, whereby when the water falls below a certain level in the boiler the mechanism will automatically operate to blow the whistle" (lines 11-16). Includes instructions and illustrations.
Date: September 15, 1914
Creator: Priester, Joel E.
Partner: UNT Libraries Government Documents Department

Boiler Attachment

Description: Patent for improvements in boiler attachments, to produce a thermostatic device of simple and improved construction which may be utilized for the purpose of actuating a valve governing the steam supply to the pump or the injector.
Date: June 28, 1913
Creator: Priester, Joel Ellis
Partner: UNT Libraries Government Documents Department

[Property tax receipt for Nicholas Negreta from Harrisburg Independent School District]

Description: Postcard sent to Nicholas Negreta for a property tax receipt No. 4858 from Harrisburg Independent School District, Harrisburg, Texas dated 1925 for $4.30 for lot 11, Block 2, Division MPS, Value $500. Sent to Nicholas Negreta at his address, 1014 Woodbury.
Date: November 9, 1925
Creator: Harrisburg Independent School District
Partner: Houston Metropolitan Research Center at Houston Public Library