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Improvement in Cotton Scrapers, Choppers, and Dirters.

Patent for "an improved machine for cultivating cotton" (lines 15-16)including illustrations. The machine is used to "bar off, scrape, chop, and dirt the cotton upon both sides of a row at one passage." (lines 17-19)

Date: December 2, 1879

Creator: De Force, Samuel A. & McConnell, William V.

Partner: UNT Libraries Government Documents Department

Rotary Boring Drill

Patent for a rotary boring drill that shears off material in a circular manner while drilling holes.

Date: December 19, 1916

Creator: Hughes, Howard R.

Partner: UNT Libraries Government Documents Department

Cotton-Tramper

Patent for

Date: December 14, 1915

Creator: Murray, Russell

Partner: UNT Libraries Government Documents Department

Differential Mechanism for Automobiles

Patent for improvements for differential mechanisms for automobiles, including a "means for transmitting power from the motor to the traction wheels of the machine".

Date: December 12, 1914

Creator: Maniscalco, Anthony S.

Partner: UNT Libraries Government Documents Department

Dredging Scraper.

Patent for a new and improved dredging-scraper. This design "has for its object the production of a marine plow which shall serve to raise and remove obstructions and accumulations from the beds or channels of rivers, bays, harbors, and other water-courses; and the invention consists in a device for this purpose of novel construction . . . The plow, which is to be drawn over the bed of the water-course to be cleared—as, for instance, by drag chain or cable attached to a steamboat—operates to ra… more

Date: December 10, 1889

Creator: Coult, Joseph C.

Partner: UNT Libraries Government Documents Department

Railway Tie Lifter

Patent for railway tie lifter. Illustration included.

Date: December 3, 1907

Creator: Norton, James W. & Collins, William

Partner: UNT Libraries Government Documents Department

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