Apparatus for Cleaning Deep Wells. (open access)

Apparatus for Cleaning Deep Wells.

Patent for a device that assists in cleaning deep wells that have caked material in the pumping apparatus by using hot steam.
Date: July 3, 1917
Creator: Deats, George W.
System: The Portal to Texas History
Resilient Wheel. (open access)

Resilient Wheel.

Patent for a wheel that contains heavy wire spokes, consisting of two sections that are arranged to have their adjacent ends spaced and connected by coil springs to insure resiliency.
Date: July 3, 1917
Creator: Fuller, Robert Nelson
System: The Portal to Texas History
Freight Gang-Plank. (open access)

Freight Gang-Plank.

Patent for freight gang-planks embodying hinged sections which may be adjusted at any angle with relation to each other so that the upper section may be disposed on a horizontal plane for the purpose of allowing a loaded truck to come to rest and remain immovable until manual or mechanical power is applied to move it.
Date: July 3, 1917
Creator: Simpson, Louis
System: The Portal to Texas History