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Potter County

Description: Blue line print of survey map of Potter County, Texas, showing rivers, creeks, original land grants or surveys, blocks of land, cities, towns, and railroads. Scale [ca. 1:190,476] (5000 varas to 7/8 of an inch).
Date: 1909
Creator: McDonald, H. F. & Terrell, O. O.
Partner: Hardin-Simmons University Library

Spur.

Description: Patent for a new and improved spur; including illustrations.
Date: August 7, 1900
Creator: Jackson, Claude D.
Partner: UNT Libraries Government Documents Department

Telephone System.

Description: Patent for improvements to an automatic switchboard "to provide a construction of board and a connected system of wiring which will permit a subscriber at a telephone in one town to call up the operator or central at a distant point and converse with him without operating the other instruments in his town and at the same time preventing other subscribers from breaking into the line" (lines 12-20).
Date: December 23, 1902
Creator: Wright, Wayne C.
Partner: UNT Libraries Government Documents Department

[Trading Card: Hoodoo]

Description: Trading card issued as part of the Geocache Challenge program for Palo Duro Canyon State Park, depicting the Devil's Tombstone hoodoo, a landmark on the lighthouse trail at the park. Information about the landmark is on the back.
Date: 2011
Creator: Texas. Parks and Wildlife Department.
Partner: UNT Libraries Government Documents Department

Lock-Plate

Description: Patent for improvements in lock-plates for the stays of wire fences.
Date: March 22, 1900
Creator: Wood, Alpheus H
Partner: UNT Libraries Government Documents Department

Stock Tank

Description: Patent for an improved water tank for livestock, connecting an elevated reservoir to a trough at ground level.
Date: August 19, 1902
Creator: Wright, Wayne C.
Partner: UNT Libraries Government Documents Department

Riding-Spur.

Description: Patent for improvement in riding-spurs for horsemen by “using an open-ended socket, a shank having limited sliding movement in the socket, a rowel freely journaled at the outer end of the shank, and a spring inclosed within the socket and serving to hold the shank normally outward, the tines or points of the rowel being adapted to engage the socket and secure the rowel against rotation when the shank is pressed inward.” (P. 2, lines 6-14.) Illustration is included.
Date: March 4, 1902
Creator: Ridings, John G.
Partner: UNT Libraries Government Documents Department

Car-Coupling.

Description: Patent for "improvements in car couplings and it has for its general object to provide a coupling embodying such a constructions that two cars may be connected together or disconnected without the objectionable necessity of a trainman going between them." (Lines 11-17) Includes instructions and illustrations.
Date: November 6, 1894
Creator: Tunnell, John D.
Partner: UNT Libraries Government Documents Department

Ditching-Machine

Description: Patent for "a machine for digging ditches or trenches of any desired depth or width, for purposes of irrigation or drainage or pipe-laying, or for building earth fences on lands, or throwing up fortifications, or for making other excavations of like general nature" (lines 7-13).
Date: December 18, 1888
Creator: Edwards, Charles Clark
Partner: UNT Libraries Government Documents Department

Car-Coupling.

Description: Patent for a car coupling that consists of a draw head with two separable jaws, a hand wheel mounted on the car, pitmen connected to the wheel and the jaws, springs pressing the jaws together, and a shaft that has a crank arm.
Date: November 7, 1893
Creator: Cassidy, William A. & McGee, Thomas F.
Partner: UNT Libraries Government Documents Department

Clevis.

Description: Patent for a simple, inexpensive, and improved clevis that can be easily manufactured and employed to a draft-beam. It can be used without a lapring in order to connect to a singletree. The singletree can have its "staple or eye...disposed in a plane with the said singletree" (lines 16-17).
Date: January 30, 1894
Creator: Word, Aaron Matthias
Partner: UNT Libraries Government Documents Department

Door-Hanger

Description: Patent for a door hanger for sliding doors to prevent them from swinging outward.
Date: January 28, 1913
Creator: Matheson, John William
Partner: UNT Libraries Government Documents Department

Sand Screen

Description: Patent for a sand screen. This invention is for sifting and screening sand. Illustration included.
Date: May 28, 1909
Creator: Tress, Paul G.
Partner: UNT Libraries Government Documents Department

Oil Burner

Description: Patent for an oil burner. Illustrations included.
Date: February 18, 1911
Creator: Pickens, James H.; Shepard, Arthur M. & Smith, Charles P.
Partner: UNT Libraries Government Documents Department

Car-Seal.

Description: Patent for a car seal, made of a long, thin, and narrow metallic strip. When it is looped through two parts of the car body, the ends can be pinned together with sealing irons. This car seal cannot be tampered with without visible evidence showing.
Date: December 5, 1911
Creator: Lawler, Claude B.; Bryan, William A. & Keller, John.
Partner: UNT Libraries Government Documents Department

Pile Structure.

Description: Patent for piling structures used in bridges and other structures built in sandy areas that allows for digging the piling hole to any depth desired and prevents cave-ins of the interior of the piling before it is filled with concrete.
Date: April 23, 1907
Creator: Pyle, Jesse Theodor
Partner: UNT Libraries Government Documents Department