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Well-Drilling Device.

Description: Patent for well drilling device with new and useful improvements in well-drilling device for simultaneously drilling the main hole and an advance or "rat-tail" hole.
Date: March 1, 1921
Creator: Smith, Primus W. & Bookhout, John J.
Partner: UNT Libraries Government Documents Department

Speed-Gearing.

Description: Patent for improvements in “gearing mechanism in which the speed or rotation of a drum or wheel is greatly increased through the intervention of gearing-wheels mounted upon a single shaft.” (Lines 11-14) Illustration is included.
Date: March 1, 1898
Creator: Scofield, John R.
Partner: UNT Libraries Government Documents Department

Printing-Roller-Cleaning Device.

Description: Patent for a cleaning device designed to expedite the cleaning of printing press rollers.
Date: March 1, 1917
Creator: Farr, Charles A. & Dove, Bascom A.
Partner: UNT Libraries Government Documents Department

Paint and Varnish Removing Process.

Description: Patent for improvements to the removal process for paint and varnish. An invention of a solution that will cause finished coatings to be removed with less expense, less time, and no specifically skilled labor requirement to meet.
Date: March 1, 1921
Creator: Cleveland, David P.
Partner: UNT Libraries Government Documents Department

Liquid or Gaseous Fuel Burning Furnace.

Description: Patent for a furnace that can be powered either by gas or liquid fuel. Designed specifically for improved insulation and fuel efficiency.
Date: March 1, 1921
Creator: Hoover, Orvill Lockwood Mead
Partner: UNT Libraries Government Documents Department

Cotton-Picker.

Description: Patent for a cotton picker, which has an improved hood that goes over the cotton plants.
Date: March 1, 1910
Creator: Dannelly, Frank M.
Partner: UNT Libraries Government Documents Department

Thill Coupling.

Description: Patent for a new and improved coupling for thills. This design consists in "[t]he combination, with the clip having the ears provided with the openings of the draft-iron having the eye at its inner end adapted to be inserted between the ears of the clip and having the transverse central opening" (lines 94-98). Further, it has "the coupling-bolt having the inclined shoulder and the nut provided with the [other] inclined shoulder and the sleeves having the inclined inner ends adapted to enter the… more
Date: March 1, 1887
Creator: Findley, James W.
Partner: UNT Libraries Government Documents Department
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