Cultivator (open access)

Cultivator

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
System: The Portal to Texas History
Expansion Double-Shovel Corn And Cotton Planter. (open access)

Expansion Double-Shovel Corn And Cotton Planter.

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.
System: The Portal to Texas History
Bolt Lock (open access)

Bolt Lock

Patent for an improved bolt block that maintains a bolt effectively against axial rotation.
Date: March 23, 1915
Creator: Robinson, Robert John, Sr.
System: The Portal to Texas History
Sweep Stock Attachment (open access)

Sweep Stock Attachment

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
System: The Portal to Texas History
Plow-Stock. (open access)

Plow-Stock.

Patent for certain new and useful improvements in plow stocks, including instructions and illustrations.
Date: March 6, 1900
Creator: Fillip, Joseph W.
System: The Portal to Texas History