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Bolt Lock

Description: Patent for an improved bolt block that maintains a bolt effectively against axial rotation.
Date: March 23, 1915
Creator: Robinson, Robert John, Sr.
Partner: UNT Libraries Government Documents Department

Plow-Stock.

Description: Patent for certain new and useful improvements in plow stocks, including instructions and illustrations.
Date: March 6, 1900
Creator: Fillip, Joseph W.
Partner: UNT Libraries Government Documents Department

Cultivator

Description: Patent for a cultivator designed to "regulate the pitch at which the sweep blades enter the ground" (lines 13-15). Illustrations included.
Date: March 22, 1910
Creator: Hewitt, John Henry
Partner: UNT Libraries Government Documents Department

Sweep Stock Attachment

Description: Patent for a plow attachment which allows for more control in regard to how deep the plow digs.
Date: March 15, 1916
Creator: Polasek, John
Partner: UNT Libraries Government Documents Department

Expansion Double-Shovel Corn And Cotton Planter.

Description: Patent for a new machine for planting corn or cotton that can be "adapted for use as a plow or cultivator" (lines 60-61), including instructions and illustrations.
Date: March 1, 1887
Creator: Draper, Richard Edward.
Partner: UNT Libraries Government Documents Department
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