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Lap Ring.
Patent for a new and improved carabiner ("lap ring"). This design calls for the hinged bar to interlock more with the body of the ring. This design prevents the stretching of the ring when bearing a heavy load, representing an improvement over previous designs.
Date:
February 22, 1881
Creator:
Morris, John P.
System:
The Portal to Texas History
Roofing Construction
Patent for a weatherproof roofing construction. Illustrations included.
Date:
February 22, 1910
Creator:
West, Hosea E.
System:
The Portal to Texas History