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in subjects: "plows"  
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Plow.

Description: Patent for a new and improved plow. This design consists in "[t]he combination, with a plow carriage, having a sprocket-wheel attached to the driving-wheel, and a rotary mold-board provided with a sprocket-hub having bearings in the plow-beam, of a shaft journaled upon the carriage-frame provided with toggle or universal joints, and suitable chain or belt connections for the sprocket-wheels" (lines 69-76).
Date: August 6, 1889
Creator: Kirk, Johnathan P.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Plow Cleaning Attachment.

Description: Patent for a new and improved plow cleaner. This design consists in "[t]he combination, with the mold-board of a plow, having parallel longitudinal slots . . . of upper and lower rollers, belts passing around the same beneath the mold-board, scrapers connected to said belts in line with the slots and adapted to pass over said mold-board, and means for rotating said belts" (lines 93-99).
Date: May 6, 1890
Creator: Dyer, Charles Valentine.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Plow.

Description: Patent for a plow that improves the type of plow employing "a moldboard and plowpoint or share bolted to a standard" (lines 9-11), with illustrations. This patent improves upon previous patents numbered 974,675 and 974,676 issued to the same inventor on November 1, 1910.
Date: January 6, 1920
Creator: Kelly, Robert Marvin
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Moldboard.

Description: Patent for a moldboard that is used for plows. Improvements on the moldboard include a simplified method of adding plaster of Paris coating.
Date: January 6, 1914
Creator: Ferris, James S.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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