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Condenser

Description: Patent for "the construction of surface-condensers for condensing steam, condensing cooling ammonia-gas, and other purposes" (lines 17-20) including instructions and illustrations.
Date: June 15, 1880
Creator: Lee, Charles Brogden
Partner: UNT Libraries Government Documents Department

Pump

Description: Patent for an improved version of a pump that includes two pistons in order to eliminate both intake and discharge valves.
Date: June 15, 1915
Creator: Sherman, J. M.
Partner: UNT Libraries Government Documents Department

Windmill Motor

Description: Patent for windmill motor. Illustration included.
Date: June 15, 1909
Creator: La Bauve, Valcoure J.
Partner: UNT Libraries Government Documents Department

Lever-Latch.

Description: Patent for a lever latch that features improved locking mechanisms for hand levers, including illustrations.
Date: June 15, 1915
Creator: Smith, Asa E.
Partner: UNT Libraries Government Documents Department

Insect-Exterminator.

Description: Patent for a red ant exterminator that works by "withdrawing the air from an ant-nest and substituting therefor a fluid or gas which may be ignited and thereby destroy the lives of the insects." (Lines 18-22) Includes instructions and illustrations.
Date: June 15, 1897
Creator: Schindler, Joseph
Partner: UNT Libraries Government Documents Department

Valve-Motion.

Description: Patent for "a valve-motion having simple and positive means for varying the points at which the ports of the engine-cylinder are opened and closed to vary the lap and lead, and while accomplishing this result the invention has especial reference to a form of valve-motion designed for use in connection with that type of locomotive or other engines in which there is a comparatively short space between the drive or driving-shaft and the engine-cylinder." (Lines 11-21) Includes instructions and ill… more
Date: June 15, 1897
Creator: Shelb, Peter J.
Partner: UNT Libraries Government Documents Department

Improvement in Syringe for Destroying Cotton-Plant Worms.

Description: Patent for improved instrument to be used to destroy cotton-worms, this instrument “provided with a nozzle, having a fine discharge-passages, through which the liquid is forced slowly, in the form of spray, and that the same nozzle is provided with an inlet-tube, through which liquid can be rapidly drawn into the barrel for filling it, but which will be automatically shut at the commencement of discharging the liquid through the nozzle, and kept shut during such discharge.” (Lines 55-62) Illu… more
Date: June 15, 1869
Creator: Robira, Antonio
Partner: UNT Libraries Government Documents Department

Improvement in Velocipede.

Description: Patent for improvement in velocipedes by using “two levers that are secured by a pivot-connection to pendent vibrating fulcra, on each side of the machine, and to the cranks of the driving-wheel; this would develop greater power than can be brought to bear by the placing of the feet of the driver directly on pedals on the crank-pins, or wrists.” (Lines 32-37) Illustration is included.
Date: June 15, 1869
Creator: Flint, Daniel P.
Partner: UNT Libraries Government Documents Department

Improvement in Velocipede.

Description: Patent for an improved arrangement of velocipedes "to allow the use of a much larger driving-wheel than is compatible with the use of pedals that are placed directly on the crank pins or wrists, and to increase the power that can be applied to the propulsion of the machine by the feet of the driver, and the the speed at which is may be driven." (Lines 16-22) Includes instructions and illustrations.
Date: June 15, 1869
Creator: Flint, Daniel P.
Partner: UNT Libraries Government Documents Department

Measuring Device

Description: Patent for a measuring device specifically created for drawing circles with chalk, with the ability to increase and decrease the size of the circles being drawn without interference including illustrations and instructions.
Date: June 15, 1915
Creator: Giese, Willy
Partner: UNT Libraries Government Documents Department

Improvement in Apparatus for Destroying Worms on Cotton-Plants.

Description: Patent for improvement in insect destroyer by “placing a gas-generator on a wagon, in its lower chamber, a fire box is placed for creating sulphurous gas. A bellows attached to its lower end to regulate sufficient air in forming the sulphurous gas.” (Lines 15-18) Illustration is included.
Date: June 15, 1869
Creator: Perl, M.
Partner: UNT Libraries Government Documents Department

Plate for Secondary Batteries.

Description: Patent filed by Joseph O. Luthy, a citizen of the Republic of Switzerland, residing in the city of San Antonio, concerning new and useful improvements in placates for secondary batteries. Figures page 1. Description of patent begins page 2.
Date: June 15, 1915
Creator: Luthy, Joseph O.
Partner: UNT Libraries Government Documents Department

Track-Rail Brace

Description: Patent for a track rail brace that connects the rails of a track and prevents spreading.
Date: June 15, 1909
Creator: Snodgrass, Willie B.
Partner: UNT Libraries Government Documents Department

Staple-Setter.

Description: Patent for a staple-setter that can be more efficiently utilized for paper board boxes, specifically boxes that are used by florists.
Date: June 15, 1920
Creator: Suchy, Frank C.
Partner: UNT Libraries Government Documents Department

Tag-Threading Machine

Description: Patent for a machine that threads tags or cards through ribbon, twine, string, etc.
Date: June 15, 1920
Creator: Suchy, Frank C.
Partner: UNT Libraries Government Documents Department

Nut Lock.

Description: Patent for a new and improved nut lock. This design consists in "[a] lock . . . for a nut having a non-circular recess in its rear face, consisting of a washer having a non-circular opening whereby it may be keyed upon a bolt and fitted to enter the non-circular recess of a nut, and a securing-plate having an opening fitted to receive the locking-washer" (lines 81-87).
Date: June 15, 1886
Creator: Unger, Louis
Partner: UNT Libraries Government Documents Department

Spring-Wheel.

Description: Patent for an improved spring wheel "which may replace the inelastic wheels commonly used in connection with automobiles, and which are usually made of wood" (lines 10-13) including illustrations.
Date: June 15, 1915
Creator: Gebhardt, William
Partner: UNT Libraries Government Documents Department

Hand-Car.

Description: Patent for "a hand-car with an auxiliary spring-actuated mechanism which can be used with or without the lever mechanism to propel at a rapid rate of speed." (Lines 12-15) Includes instructions and illustrations.
Date: June 15, 1897
Creator: Rousey, William N.
Partner: UNT Libraries Government Documents Department

Horse Collar.

Description: Patent for a new and improved horse collar. This design "is to supply a cheap, durable, easy fitting and self adjusting or flexible horse-collar for farm and other use, and which shall readily adapt itself to the form of the animal, and thereby obviate those abrasions which are so common with the use of a rigid and unyielding collar. To these and other ends [the] collar is made for the most part of what is known as "moss-yarn," with its strands or fibers arranged and the body of the collar subj… more
Date: June 15, 1886
Creator: Bailey, William Luther; Knight, Leonard Thaddeus & Knight, Lenis Douglas
Partner: UNT Libraries Government Documents Department

Electric Signaling System for Railways

Description: Patent for an electric signaling system for railways which allows the engineer to see whether there is any danger or obstruction ahead on the track, and send and receive signals to and from a distant point. Illustrations included.
Date: June 15, 1909
Creator: Lacroix, Fred
Partner: UNT Libraries Government Documents Department

Fork

Description: Patent for a mechanical fork that is operated using the thumb or finger.
Date: June 15, 1920
Creator: Denman, Hugh Emery
Partner: UNT Libraries Government Documents Department

Piston-Ring.

Description: Patent for metallic piston rings to allow for expansion and contraction without leakage.
Date: June 15, 1920
Creator: Jordan, Robert M.
Partner: UNT Libraries Government Documents Department

Ice-Cream Freezer

Description: Patent for an ice cream freezer that may also be used as an egg beater or a churn. Illustrations included.
Date: June 15, 1909
Creator: Moon, Richard Davis
Partner: UNT Libraries Government Documents Department

Telephone-Transmitter.

Description: Patent for "a simple transmitter in which the greatest volume of sound may be transmitted without causing grating or rattling." (Lines 8-11) Includes instructions and illustrations.
Date: June 15, 1897
Creator: Alexander, Horace C.
Partner: UNT Libraries Government Documents Department
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