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Improvement in Rotary Dredgers.

Description: Patent for an improved rotary dredging-machine operated by adjustment from the engine through gearing enabling the manipulation of "a heavier wheel than would otherwise be practicable" (lines 71-72) with illustrations.
Date: December 21, 1875
Creator: Hawley, Abel
Partner: UNT Libraries Government Documents Department

Improvement in Locomotive Earth-Excavators.

Description: Patent for "an earth-excavator, principally for use in making the road-beds for railroads, which shall not only do its work continuously, but which shall be equally efficient in throwing up an embankment or in making a deep cut." (Lines 8-12) Includes instructions and illustrations.
Date: December 28, 1875
Creator: Hawley, Abel
Partner: UNT Libraries Government Documents Department

Improvement in Insect-Destroyers.

Description: Patent for a device to destroy "winged insects which are destructive to the cotton plants and other vegetation" (lines 19-21) including instructions and illustrations.
Date: December 6, 1870
Creator: Byrne, Thomas; Strunk, Diedrich & Schott, J. J.
Partner: UNT Libraries Government Documents Department

Ash-Pan

Description: Patent for an ash pan for trains. Illustrations included.
Date: May 16, 1911
Creator: Spratley, George
Partner: UNT Libraries Government Documents Department
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