UNT Libraries Government Documents Department - 5 Matching Results

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Improvement in Hay and Cotton-Presses.

Description: Patent for improvements in presses for hay, cotton and similar substances, by making the machine portable and the box that holds hay or cotton is adjustable vertically and horizontally. Illustration is included.
Date: October 5, 1869
Creator: Berkeley, John

Improvement in Tanning.

Description: Patent for improvements in tanning materials: "extractive matter for the manufacture of leather from the wood and bark of the mesquit - a tree of extensive growth on the prairies of western and north western Texas" (lines 9-13).
Date: December 5, 1865
Creator: Park, John E.

Steam-Boiler.

Description: Patent for the improvement for steam boilers by having a detachable fire-box for a portable boiler with little maintenance and efficient as a steam generator, including illustration.
Date: March 5, 1861
Creator: Porter, John
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