UNT Libraries Government Documents Department - 92 Matching Results

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Improvement in Ox-Bows.

Description: Patent for improvements to ox-bows so that they "shall not require bending, and which may be made in parts of the country where timber suitable for bending is scarce" (lines 9-12).
Date: May 24, 1870
Creator: Moore, Alfred L. D.

Improvement in Grinding-Mills

Description: Patent for an improvement in grinding-mills, combining the operative mechanism with spindles - in which the both the grinding stones obtain relative surface speeds only half the actual speed of the stones.
Date: May 9, 1871
Creator: Hensley, Henry

Improved Head-Rest.

Description: Patent for a new and improved head-rest for railroad-car seats and other seats, that can be applied to or removed from the back of seats without the use of clamp-screws, and are adjustable and adaptable to the convenience and comfort of different persons. It includes a description and illustrations.
Date: May 31, 1870
Creator: Littlepage, Caleb V.

Improvement in Refining and Ageing Liquors.

Description: Patent for improvement in refining and ageing liquors, including an illustration. The process includes expelling air from distilled liquors, heating them to a boiling point and then cooling them in a waterbath, through the use of a closed, air-tight vessel surrounded by an open water-vessel.
Date: May 10, 1870
Creator: Gilman, Samuel H.

Improvement in Plows.

Description: Patent for "plow mold-boards to which the black land of Texas, and other similar soils, will not adhere, so that a furrow can be turned, however sticky and waxy the soil may be." (lines 14-18) including instructions and illustrations.
Date: May 18, 1875
Creator: Bell, Francis R.
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