Trailing Device for Tractors and the Like (open access)

Trailing Device for Tractors and the Like

Patent for a device built to connect behind tractors and other farming vehicles. Development and use are within text; includes illustrations to demonstrate the object of the patent.
Date: November 27, 1917
Creator: Fiegelson, Alexander
System: The Portal to Texas History
Water Craft. (open access)

Water Craft.

Patent for a "bathing float equipped with propelling means" (lines 10-11) and a "depressible platform combined with ... a diving rudder" to allow the front part of the craft to dive underneath the water (lines 13-15).
Date: April 27, 1915
Creator: Caldwell, John C.
System: The Portal to Texas History
Manufacture of Aluminum Chlorid (open access)

Manufacture of Aluminum Chlorid

Patent for method of making aluminum chlorid, where a form of hydrated alumina is combined with coking coal, and then exposed to heat and chlorin/chlorin containing gas.
Date: February 27, 1917
Creator: McAfee, Almer M.
System: The Portal to Texas History
Purifying Oils (open access)

Purifying Oils

Patent that converts low grade petroleum into higher grade petroleum. The process warms aluminum chlorid with petroleum material in a nonviolent way to make a purifying oil.
Date: August 27, 1918
Creator: McAfee, Almer M.
System: The Portal to Texas History
Process of Purifying Paraffin. (open access)

Process of Purifying Paraffin.

Patent for improvements in the process of purifying paraffin wax.
Date: August 27, 1918
Creator: McAfee, Almer M.
System: The Portal to Texas History
Oil-Tank. (open access)

Oil-Tank.

Patent for oil tank top to prevent destruction of inflammable substance in the tank by enabling the gas to escape in a simple and effective manner.
Date: June 27, 1916
Creator: Bradley, Benjamin Franklin
System: The Portal to Texas History
Fastening and Releasing Device for Logging-Car Chains. (open access)

Fastening and Releasing Device for Logging-Car Chains.

Patent for a fastening and releasing device for logging car chains that is strong and easy to use.
Date: December 27, 1910
Creator: Proctor, Joseph W.
System: The Portal to Texas History
Plunger. (open access)

Plunger.

Patent for a plunger for use in pumps and air compressors that fits tightly into the cylinders of the machine.
Date: February 27, 1912
Creator: Ohmstede, August
System: The Portal to Texas History