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in subjects: "plows"  
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Improvement in Single-Trees.

Description: Patent for "a new and useful improvement in Wooden Single-Trees" (lines 3-4), "for plows and other similar drafts" (lines 15-16), including instructions and illustrations.
Date: December 18, 1877
Creator: Bass, Thomas Gibson
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Improvement in Cultivators.

Description: Patent for improving on a plowing device. This apparatus has four independent and adjustable shovels attached together to work to cultivate a field.
Date: November 18, 1873
Creator: Cavett, Richard S.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Self Cleaning Plow.

Description: Patent for a new and improved self-cleaning plow. This design consists in "[t]he combination of a mold-board having a plane face on the larger portion of its area, a blade having an axle journaled near the center of the said plane, a wheel journaled in the plow, with its rim parallel to and extending below the landside of the plow, a beveled gear-wheel upon the said wheel-axle, and another beveled wheel upon the blade-axle, engaging each other" (lines 79-87).
Date: August 18, 1885
Creator: Jones, Allen
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Improvement in Gang Plow and Cultivator.

Description: Patent for "a new and improved gang plow and cultivator" (lines 3-4), including instructions and illustrations. "This invention relates to a new agricultural machine which may be readily changed from a gang-plow into a cultivator, and vice-versa" (lines 15-17).
Date: December 18, 1877
Creator: Domschke, Charles
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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