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Bridge.
Patent for a new and improved bridge. This design consists in "the combination, with the base, stringers, the top arched bars, and the upright tie-bars, of the intermediate stringers, arched bars, and their horizontal tie-bars, and wedge-keys . . . whereby the structure is greatly strengthened" (lines 85-91).
Date:
December 13, 1881
Creator:
Ibel, Justus H.
System:
The Portal to Texas History
Car Door Fastening.
Patent for a new and improved car-door fastening. This design "consists in a novel construction and arrangement of a staple, a hook-hasp, key, and a key-plate, whereby several advantages are obtained . . . for securing the sliding doors of box-cars and other railway-cars" (lines 8-14).
Date:
April 19, 1881
Creator:
Alexander, Francis Marion
System:
The Portal to Texas History