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Bridge.
Patent for "improvements in bridges of that class which are used for crossing streams or country roads, and for such other purposes as a bridge may be desired" (lines 15-18), with instructions and illustrations.
Date:
August 16, 1887
Creator:
Mitchell, Joseph
System:
The Portal to Texas History
Railway-Switch
Patent for "automatic switches wherein the operative devices are under the control of the engineer, brake-man, or other authorized person on the train or a portion thereof" (lines 12-16).
Date:
August 2, 1887
Creator:
Robberson, John W.
System:
The Portal to Texas History