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Medicated Salt Rock
Patent for "improved medicated salt rock to be used for keeping cattle, horses, and other live stock in good condition, to serve as a tonic and blood-purifier, also to expel worms from the stomach and intestines, and to eradicate ticks and vermin" (lines 10-15).
Date:
April 23, 1901
Creator:
Green, Charles O; Wickline, William P. & Eaton, James B.
System:
The Portal to Texas History
Combination Countersink and Bit-Gage.
Patent for a tool to be used with a drill or bit that allows the user to simultaneously drill and form a countersink. It also has a bit gauge that allows it to be used for drills of varying sizes.
Date:
March 23, 1920
Creator:
Storey, Henry L.
System:
The Portal to Texas History