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Combination-Lock.

Description: Patent for improvement upon a combination-lock.
Date: May 1, 1888
Creator: Bergman, John
Partner: UNT Libraries Government Documents Department

Car-Brake.

Description: Patent for improvement to train brakes by using a car brake apparatus.
Date: July 21, 1885
Creator: Sledge, Clarence Linden
Partner: UNT Libraries Government Documents Department

Dental Chair.

Description: Patent for a dental chair improvement.
Date: April 26, 1887
Creator: Stiles, Edmund P.
Partner: UNT Libraries Government Documents Department

Wire-Stretcher.

Description: Patent for a wire stretcher tool for use in building wire fences.
Date: April 18, 1911
Creator: Gibbens, Andrew J.
Partner: UNT Libraries Government Documents Department

Insect Destroyer.

Description: Patent for a new and improved pest trap. This design "consists in the combination of a suitable fire chamber provided with a cover at its top, a pipe which passes through its side to admit a blast of air, a removable bottom, which is supported inside of the bottom of the chamber upon suitable supports, and a removable pipe through which the products of combustion are forced . . . when these parts are destroyed they have only to be replaced by new ones" (lines 14-28).
Date: November 20, 1883
Creator: Melcher, John C.
Partner: UNT Libraries Government Documents Department

Magneto-Telephonic Apparatus

Description: Patent for an invention to improve transmitting vocals and other sounds. It is a magneto telephonic system based on an magnetic field of high intensity.
Date: May 4, 1886
Creator: Brown, Fred. H.
Partner: UNT Libraries Government Documents Department

Machine for making mattresses.

Description: Patent for a machine for making mattresses with compressed lint-cotton inserted into a tick.
Date: June 4, 1901
Creator: Morgan, John W.
Partner: UNT Libraries Government Documents Department

Knee-Pad

Description: Patent for "new and useful Improvements in Knee-Pads" (lines 5-6), including instructions and illustrations.
Date: September 30, 1913
Creator: Schmitt, William
Partner: UNT Libraries Government Documents Department

Vehicle-Jack.

Description: Patent for a vehicle-jack that can raise and lower all of the supporting legs using a single lever, as well as lengthen and shorten the jack at will to adapt it to vehicles of different sizes.
Date: June 16, 1914
Creator: Douglass, John A.
Partner: UNT Libraries Government Documents Department

Insect-Destroyer.

Description: Patent for boll-weevil insect destroyer to that can be attached to cotton cultivator device and used to remove and destroy boll weevils simultaneously to plowing the cotton with the cultivator.
Date: September 5, 1916
Creator: McCracken, Ninian S.
Partner: UNT Libraries Government Documents Department

Improvement in Saw-Sets

Description: Patent for an improvement in a device which sets the teeth of a saw, with instructions and illustrations.
Date: November 18, 1879
Creator: Holton, Samuel
Partner: UNT Libraries Government Documents Department

Improvement in Curtain-Rollers and Brackets.

Description: Patent for the improvement of curtain rollers that may be installed inside or outside the frame.
Date: March 26, 1878
Creator: Morris, James P.
Partner: UNT Libraries Government Documents Department

Improvement in Spring-Hinges.

Description: Patent for a new spring hinge design which will "either open or close the door or gate after it has passed an angle of forty-five degrees" (lines 20-22) including illustrations.
Date: June 24, 1879
Creator: Barry, William G.
Partner: UNT Libraries Government Documents Department

Transmission Mechanism.

Description: Patent for a transmission mechanism "in which a minimum number of parts is employed and the working thereof is uniform, steady, and without lost motion" (lines 16-18). Additional benefits are "simple in construction, thoroughly reliable and efficient in operation, and which is strong and durable and may be manufactured at small cost" (lines 21-24).
Date: May 21, 1918
Creator: Martinez, Norberto
Partner: UNT Libraries Government Documents Department

Lamp-Burner

Description: Patent for the provision of spring pressed clamps pivotally mounted on a burner and adapted to engage opposite sides of the base of a lamp chimney and thereby securely hold the lamp chimney in place on the burner and yet permit the ready removal of the chimney.
Date: January 4, 1916
Creator: Patterson, Simon H.
Partner: UNT Libraries Government Documents Department

Improvement in Plows

Description: Patent for the improvement of plows, with illustration.
Date: August 13, 1878
Creator: Johnson, Felix
Partner: UNT Libraries Government Documents Department

Improvement in Insect-Destroyers

Description: Patent for an improvement of insect-destroyers in the form of spraying poisonous liquid forced over plants, with illustration.
Date: August 13, 1878
Creator: Ruhmann, Julius Paul
Partner: UNT Libraries Government Documents Department

Improvement in Apparatus for Destroying Insects.

Description: Patent for an "improvement in devices for destroying ants and burrowing animals of all kinds." (lines 13-15) Includes instructions and illustrations.
Date: November 18, 1879
Creator: Melcher, John C.
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
Partner: UNT Libraries Government Documents Department

Track Raiser.

Description: Patent for improvements to railroad track raisers.
Date: February 16, 1886
Creator: Robburts, Geoorge W.
Partner: UNT Libraries Government Documents Department

Pneumatic Cotton-Conveyer.

Description: Patent for "an improvement in pneumatic cotton-conveyers, particularly with relation to means for putting the exhaust-pipe which leads to the elevator in communication with either of a series of intake-pipes at will and for relieving the partial vacuum caused by the operation of the exhaust-fan at will." (lines 8-14)
Date: March 3, 1903
Creator: Richmond, George Eustace
Partner: UNT Libraries Government Documents Department

Planter Attachment for Plows

Description: Patent for a combined cotton, corn, and sugar-cane planter attachment for plows, which is intended "to provide a simple, cheap, and automatically operating planting attachment for plows which may be used for the planting of seeds of various kinds, as cotton, corn, sugar-cane, and the like, and which may be readily attached to and detached from a plow."
Date: November 13, 1900
Creator: Riewe, Friedrich
Partner: UNT Libraries Government Documents Department

Prescription-Filing Machine.

Description: Patent for a prescription-filing machine that allows for more accurate sorting of medical prescriptions.
Date: August 6, 1918
Creator: Elder, Joseph H.
Partner: UNT Libraries Government Documents Department

Stop and Waste Cock

Description: Patent for improvements in the construction and design of stop and waste cocks.
Date: March 4, 1902
Creator: Munger, Ennis
Partner: UNT Libraries Government Documents Department
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