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in subjects: "earth working tools"  
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Tunneling-Machine.

Description: Patent for a tunneling machine that has the ability to easily change course and utilizes a conical shaped shell to receive loose earth and convey it towards the mouth of the tunnel. The invention also has a rotating head connected to the carrying vehicle meaning that the machine is supported and driven forward against the tunnel as it is cut away.
Date: December 30, 1919
Creator: Dana, Frank L.
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Partner: UNT Libraries Government Documents Department

Improvment in Cotton Cultivator.

Description: Patent for improvements in cotton cultivators: "designed more especially for cultivating cotton, scraping the earth away from the young plants, and thinning out the same" (lines 11-12).
Date: December 18, 1866
Creator: Foster, A. K. & Foster, B. H.
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Partner: UNT Libraries Government Documents Department

Improvement in Plows.

Description: Patent for an improved plow to turn and reverse the mold-board by using a single bolt to secure the reversible mold-board onto the stock of a plow.
Date: May 15, 1860
Creator: Pitts, William C.
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Partner: UNT Libraries Government Documents Department

Plow.

Description: Patent for improving the construction of plows. "The invention relates particularly to that class of plows in which a landslide is permanently attached to the depending portion of the beam." (lines 13-16)
Date: September 30, 1902
Creator: Hankins, Elias
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Partner: UNT Libraries Government Documents Department

Plow.

Description: Patent for improvements in reversible plows: "The object of the present invention is to simplify and improve the construction of reversible plows and enable them to be adjusted to any desired depth" (lines 9-12).
Date: August 18, 1891
Creator: McKay, Robert B.
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Partner: UNT Libraries Government Documents Department

Agricultural Implement.

Description: Patent for a device related to plows, with a corn-planter and a cotton-planter attachments, including instructions and illustrations.
Date: March 23, 1880
Creator: Chapman, William Arnol
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Partner: UNT Libraries Government Documents Department

Cultivator and Scraper.

Description: Patent for improvements in cultivators and scrapers: "The object of our invention is to provide a cultivator and scraper of simple and economical construction" (lines 15-17).
Date: October 13, 1891
Creator: Huneycutt, Noah & Moseley, Thomas Elverton
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Partner: UNT Libraries Government Documents Department

Improvement in Gang and Sulky Plows.

Description: Patent for improvements in gang and sulky plows which "consists in an axle having the double crank of the transporting-wheel journaled upon the outer bend of said crank, working between the side beams of the plow-frame, and the connecting-rods pivoted, respectively, to the said bars and to the end and inner bend of said crank" (lines 17-23). Includes instructions and illustrations.
Date: January 8, 1878
Creator: McCormick, John Robert
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Partner: UNT Libraries Government Documents Department
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