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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
Windmill.
Patent for an improvement in the vertical wheel of windmills including illustrations.
Date:
March 26, 1889
Creator:
Dietert, Gustav
System:
The Portal to Texas History