Resource Type

Cotton-Picker's Sack. (open access)

Cotton-Picker's Sack.

Patent for improvements to Cotton-Picker's Sacks "to permit the bag or sack to be opened longitudinally to permit quick and convenient emptying of the contents thereof" (lines 12-15).
Date: March 1, 1921
Creator: White, Benjoman Henry
System: The Portal to Texas History
Reagent for Liquid-Battery Cells. (open access)

Reagent for Liquid-Battery Cells.

Patent for a method of producing a "cheap and efficient substitute for copper sulfate for use in battery cells" (lines 14-16).
Date: April 19, 1921
Creator: Humphrey, David L. & Pittman, Carl L.
System: The Portal to Texas History
Swingletree (open access)

Swingletree

Patent for a swingletree that equalizes the strain of the draft animal when the traces are connected in an irregular manner.
Date: July 20, 1920
Creator: Bosse, William F.
System: The Portal to Texas History