Improvement in Farm-Fences. (open access)

Improvement in Farm-Fences.

Patent for a new and useful improvement in fence including instructions and illustrations.
Date: July 29, 1873
Creator: McKenzie, Winfield S.
System: The Portal to Texas History
Improvement in Sulky-Plows. (open access)

Improvement in Sulky-Plows.

Patent for an improvement on sulky-plows which allows it to be adjusted for different uses.
Date: August 28, 1877
Creator: Renfro, Roberson A.
System: The Portal to Texas History
Improvement in Construction of Jails. (open access)

Improvement in Construction of Jails.

Patent for improvement in construction of jails; in which a system of flues in between layers of a double floor provide ventilation through grates in the walls and upper layer of the floor, without compromising security.
Date: October 19, 1875
Creator: Seeber, John A. & Croxton, James C.
System: The Portal to Texas History
Improvements in Traction-Engines. (open access)

Improvements in Traction-Engines.

Patent for improving traction engines for use in hauling on farms and farm roads. Includes instructions and illustrations.
Date: October 14, 1879
Creator: McGregor, Montague M. & Croxton, James C.
System: The Portal to Texas History