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Shaft and Pulley Collar.
Patent for a collar for pulleys and shafts with set-screws that protects the set-screws from damage or harming people working with the systems.
Date:
May 14, 1907
Creator:
Beal, Ephaphras Lee
System:
The Portal to Texas History
Windmill
Patent for "a mill equipped with an automatic governor for regulating the speed of the windmill and for preventing injury to the apparatus by throwing the blades of the wheel into or out of the wind in a manner to secure the most effective operation of the device at all times" (lines 9-15).
Date:
May 14, 1901
Creator:
Stein, John
System:
The Portal to Texas History