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Air-Lift Pump

Description: Patent for an air lift pump. Illustrations included.
Date: July 30, 1912
Creator: Holmgreen, Julius H. & Underwood, William H.
Partner: UNT Libraries Government Documents Department

Anti Friction Journal.

Description: Patent for a new and improved anti-friction journal. This design "relates to anti-friction devices adapted especially for hoisting pulleys; and it has for its object to provide a device in which the shaft or axis of the main hoisting-pulley shall be supported or mounted upon the peripheries of wheels of a considerable diameter as compared with that of the hoisting-pulley, whereby the friction may be lessened to the greatest possible extent" (lines 24-32).
Date: July 22, 1884
Creator: Taylor, John C.
Partner: UNT Libraries Government Documents Department

Anti-Friction Wagon Slide.

Description: Patent for a new and improved anti-friction wagon slide. This design "consists of flat side pieces provided with bolt-holes near their ends, and connected to diametrically-opposite points of nearly-cylindrical end pieces, which have holes through their axes for the reception of the roller-shaft. The recess is so formed that the lower portion of the end pieces shall bear against its ends when the frame is put in place. This arrangement, together with the bolts through the corners of the frame an… more
Date: July 27, 1886
Creator: Jowell, George Ratcliff
Partner: UNT Libraries Government Documents Department

Animal Trap.

Description: Patent for a new and improved animal trap. This design consists in "the combination of the wire frame having the parallel base-arms, the coiled-springs, the upwardly-extending arms, and the downwardly-extending loop, the loop or ring on the bend and engaged portions of said wire, and the trigger-wire having the frontwardly-projecting point engaging said ring" (lines 80-87).
Date: July 10, 1888
Creator: Beversdorf, Louis, Jr.
Partner: UNT Libraries Government Documents Department

Ant-Trap

Description: Patent for an ant trap,with illustrations. Purpose of the invention was to be efficient more efficient in both cost and use in comparison to other ant traps being sold at the time.
Date: July 30, 1889
Creator: Davis, Edwin E.
Partner: UNT Libraries Government Documents Department

Animal-Trap.

Description: Patent for an improved animal trap that can catch a large variety of animals, including fish, and does not injure the animals. Bait is placed in the trap, and the door on one end is spring-activated. A hinged door on the top is where the operator can take out the animal.
Date: July 18, 1893
Creator: Crockett, William E. & McAdams, Richard E.
Partner: UNT Libraries Government Documents Department

Anti-Oscillating Attachment for Street-Cars.

Description: Patent for an improved anti-oscillating attachment for street-cars. It has a car truck, equalizing pivoting bars secured between the truck ends, cushions on either side of the bars, adjustable bolts that hold the bars in place, and springs between the bolts.
Date: July 10, 1894
Creator: Chollar, Benjamin F.
Partner: UNT Libraries Government Documents Department

Aerial Navigating Apparatus.

Description: Patent for an aerial navigating apparatus with more details of combinations, construction, and presentation of parts.
Date: July 25, 1911
Creator: Flanagan, Henry
Partner: UNT Libraries Government Documents Department

Advertising Device

Description: Patent for Advertising Device
Date: July 28, 1903
Creator: Smith, John D.
Partner: UNT Libraries Government Documents Department

Advertising Exhibitor and Phonographic Annunciator

Description: Patent for an advertising exhibitor and phonographic annunciator that shows changing advertisements and has a recording reading them out.
Date: July 25, 1911
Creator: Stafford, George A.
Partner: UNT Libraries Government Documents Department

Air-Brake Governor

Description: Patent for an air brake governor improvement that regulates the pressure of fluid or air in the braking system as to prevent it from braking with too much pressure.
Date: July 10, 1906
Creator: Williams, Leonard F.
Partner: UNT Libraries Government Documents Department

Animal Trap

Description: Patent for an animal trap. Illustration included.
Date: July 31, 1906
Creator: Crowson, John J.
Partner: UNT Libraries Government Documents Department
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