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in subjects: "plows"  
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Listing-Plow.

Description: Patent for a listing plow, "more particularly an improvement upon the structure disclosed in Patent No. 866,679, issued to [Gottfried Persson] on September 24, 1907" (lines 9-11), including instructions and illustrations.
Date: April 22, 1913
Creator: Persson, Gottfrid
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Moldboard

Description: Patent for improvements in plow mold-boards, specifically for shedding sticky soil, and includes illustrations and description.
Date: April 8, 1913
Creator: Martin, William A. & Coleman, Robert J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Beam-Spring Trip for Cultivators, Plows, &c.

Description: Patent for the improvement of "the construction of spring trips, and to provide a simple and inexpensive spring trip, capable of being constructed of sufficient strength to enable it to be employed on stirring and breaking plows as well as cultivators, planters and the lighter class of agricultural implements" (lines 12-18) including instructions and illustrations.
Date: July 29, 1913
Creator: Alsup, Thomas B.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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