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Car Coupling.

Description: Patent for a new and improved coupling for railroad cars. This design utilizes "a draw-head, formed with the usual flaring mouth, and interior cavity. . . . the interior of the draw-head is narrowing from the mouth to the center of the pin, and widening from the latter backward. The object of this construction is, that it directs the entering link to the pin, and increases the power of resistance of the latter to the strain" (lines 23-33).
Date: April 5, 1881
Creator: Nuckols, William L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Cotton Seed Planter.

Description: Patent for a new and improved cotton-seed planter. This design "consists in the combination of a front pair of scraping-wings attached to a central furrow-opener, a revolving biconical wheel for pressing open the furrow and operating a toothed or spiked seed stirring and distributing shaft, and a rear covering-roller having a concave periphery" (lines 18-24).
Date: April 5, 1881
Creator: Crow, John Alexander
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Gopher Trap.

Description: Patent for a new and improved trap for gophers and other subterranean animals. This design utilizes for the first time the combination of spring, jaw, treadle, trigger, and baseboard to ensnare gophers and other varmints.
Date: July 5, 1881
Creator: Norris, Abram
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Hub Attaching Device.

Description: Patent for a new and improved arrangement of axles and boxes for vehicles. This design calls for a solid axle formed with a shoulder and screw-threads, an axle-box closed at its outer and provided at the other end with an annular wall, a collar formed with internal screw-threads, annular flange, bearing surface, wrench-gripe surfaces, and a cap or ring (lines 16-22).
Date: November 22, 1881
Creator: Warth, August
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Permutation Lock.

Description: Patent for a new and improved combination lock. This design consists of "[a] door having at its edges the sockets formed by ribs and mouths in combination with permutation-disks, seated in said sockets and handles" (lines 5-8).
Date: June 28, 1881
Creator: Sevier, Moses Nimrod
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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