UNT Libraries Government Documents Department - 36 Matching Results

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Centrifugal Separator.

Description: Patent for a centrifuge that can effectively and efficiently separate heavy oils from acids "with which the oil has been mixed or emulsified as a clarifying or decolorizing agent" (lines 14-16), with illustrations.
Date: March 14, 1922
Creator: Paul, Christian F., Jr.
Item Type: Refine your search to only Patent

Crude-Oil Burner

Description: Patent for an efficient burner of crude or fuel oil that can be used with less dangerous fuels while maintaining the same high level of heat and vaporization necessary for use in domestic environments.
Date: June 14, 1921
Creator: Holmes, Watson W.
Item Type: Refine your search to only Patent

Exhibitor

Description: Patent for device which would allow motorists to display road maps in their vehicle while driving. Would also include a light so maps could be visible at night.
Date: August 14, 1917
Creator: Atkinson, Jackson B.
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Gun.

Description: Patent for an artillery gun which can be moved in any direction due to improvements in its base.
Date: October 14, 1919
Creator: Collier, William Reid
Item Type: Refine your search to only Patent

Hat-Pin

Description: Patent for a hat pin. This hat pin utilizes a new form of guard to house the pin to prevent injury and keep it from accidentally slipping out. It is also designed to be ornamental, compact, and can be applied to many different types of hat.
Date: May 14, 1918
Creator: Collier, William Reid
Item Type: Refine your search to only Patent

Mail-Bag Fastener.

Description: Patent for a mail-bag fastener that consists of a mail bag with a flap, slots, a double upper portion next to the flap, a channel cut into the portion, guides with slots across the channel, a leather strap that slides into the channel, staples on the inside of the flap, and a tag holder attached to the back of the strap.
Date: November 14, 1893
Creator: Roosevelt, James Albert
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Metallic Railroad-Tie.

Description: Patent for an improvement of metallic railroad ties in which clamp-plates are not needed to hold the longitudinal tension-rods, “instead the heads of the rods bear against the solid outer ends of the rail-seats which are constructed integral with the body of the tie.” (Lines 14-17) Illustration is included.
Date: April 14, 1891
Creator: Saunders, Ellison
Item Type: Refine your search to only Patent

Needle.

Description: Patent for improvements in needles: "is to provide a ready means for cutting to the twine, thread, or cord carried by a needle" (lines 15-17).
Date: September 14, 1897
Creator: Posey, Robert H.
Item Type: Refine your search to only Patent
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