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Process of Heating Oil-Retorts and Apparatus Therefor.

Description: Patent for "a method of securing even heating of oil retorts and the like throughout their length" and "a new apparatus, particularly intended for the heating and cracking of oils to convert the same into pyrolytic products". The invention may be used for any oil converting retort, but the patent description relates to the production of gasoline.
Date: August 16, 1921
Creator: Alexander, Clive M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Bee-Shipping Cage

Description: Patent for transferring bees to a different hive without injury and preventing bees from escaping. The bee-cage offers different ways to transfer the bees.
Date: August 16, 1921
Creator: Ault, Eugene B.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Fountain Brush.

Description: Patent for the improvement of fountain brushes. The brush would be in the shape of a pencil which would stop ink or dye from spreading on fabric.
Date: August 16, 1921
Creator: Bates, William P.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Water-Motor.

Description: Patent for a more powerful and efficient water motor which is durable and comparatively affordable to manufacture.
Date: August 16, 1921
Creator: Brady, Enoch J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Hoe.

Description: Patent for a hoe with "a colter shank at the oval top, affording means whereby the hoe may clear itself from large branching weeds, which is frequently a trouble met with in using hoes having a shank in the center."
Date: August 16, 1921
Creator: Clark, James Robert.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pressure-Screw.

Description: Patent for a pressure screw where the screw can freely rotate, and the shoe may pivot slightly. It is also designed for easy maintenance and lubrication of the bearing and to be cheap to manufacture, efficient and durable.
Date: August 16, 1921
Creator: Menger, Edward W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Well-Drilling Bit.

Description: Patent for a well drilling bit with a removable point and cutting edges "at a greater radial distance from the center of the bit" (lines 18-19). The point may be removed for sharpening or replacement.
Date: August 16, 1921
Creator: Midgett, Penelton G.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Oil-Burner.

Description: Patent for oil burner that simultaneously ignites and vaporizes liquid fuel.
Date: August 16, 1921
Creator: Mills, Virgil H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Oil-Burner.

Description: Patent for "an improved apparatus for and method of consuming liquid fuel", particularly low-cost heavy oils that are more difficult to burn.
Date: August 16, 1921
Creator: Mills, Virgil H. & Mills, John H. T.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Ice-Cream Freezer

Description: Patent for an ice cream freezer that has an attachment at the top which can be grasped by hand to keep the ice cream freezer rigid while operating.
Date: August 16, 1921
Creator: Neyland, William M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Well-Casing Extractor

Description: Patent for a well-casing extractor that provides gripping rollers for engaging the casing, provides a supporting frame for the movable parts of the apparatus, and provides the means to drive the rollers by power or hand.
Date: August 16, 1921
Creator: Price, Filmore M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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