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in place name: "United States - Texas - Bosque County - Kopperl"  
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Plow.

Description: Patent for improvements in plows in which the plow can be “converted into a middle-burster or single-stock, according to the nature of the land and the character of work to be performed.” (Lines 12-15) Illustration is included.
Date: May 24, 1904
Creator: Weldon, Johnathan L.
Partner: UNT Libraries Government Documents Department

Railway-Switch-Operating Mechanism

Description: Patent for a railway operation switch which allows for the engineer of the train to operate the switch without the drawback of slowing the locomotive in question.
Date: 1920
Creator: Tally, Carl E.
Partner: UNT Libraries Government Documents Department

Self-Dumping Drag Harrow

Description: Patent for an invention, including specifications, of an improved Self-Dumping Drag-Harrows mechanism. The device is capable of rotating or changing the angle of harrow teeth and body without the effort of the machine operator, facilitating faster movement and increased production. The mechanism in question is claimed by the applicant in addition to the competent parts arranged in such a fashion as to mimic the capabilities of the described device.
Date: September 27, 1913
Creator: Bales, William S.
Partner: UNT Libraries Government Documents Department
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