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in creator/contributor: "Knight, Harry E."  
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Tunnel-Driving Machine.

Description: Patent for "new and useful Improvements in Tunnel- Driving Machines" (lines 5-6), including instructions and illustrations.
Date: September 2, 1913
Creator: Speer, George F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Stalk and Clod Cutter.

Description: Patent for a new and improved stalk cutter. This design "consist[s] of . . . any desirable number of cutting-wheels constructed with heavy spherical hubs of cast metal and spokes carrying at their extremities horizontal knives. The said cutting-wheels are mounted . . . on a horizontal shaft provided with a longitudinal key-slot from end to end, so that the cutting-wheels may be adjusted in the desired positions thereon, the said shaft turning in boxes at the rear ends of a pair of longitudinal … more
Date: December 15, 1885
Creator: Farley, John C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Cotton-Chopper.

Description: Patent for a new "machine for chopping surplus cotton or corn out of the rows or drills, leaving it in hills at the desired distance apart" (lines 8-11) including instructions and illustrations.
Date: March 23, 1886
Creator: Farley, John C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rock Drill

Description: Patent for a rock drill. This invention is designed for use with a pitman driven by a crank movement or a direct ratchet connected to a driving rod. Illustrations included.
Date: December 24, 1912
Creator: Speer, George F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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