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Measuring and Drawing Tool.
Patent for an improved, simple, and durable measuring and drawing tool that is easily adjusted and used to find bevels, pitches, degrees, and lengths in framing roofs. It has other purposes as well. "The invention consists of a plate in the shape of an eighth of an octagon having four sides, and a straight edge pivoted on the side plate and indicating thereon" (lines 14-17).
Date:
May 2, 1893
Creator:
Allred, Lemuel O.
System:
The Portal to Texas History
Automatic Switch
Patent for an automatic switch for railroad tracks.
Date:
May 2, 1911
Creator:
Pickle, Voyl C.
System:
The Portal to Texas History
Metal Tie.
Patent for a metal railroad tie.
Date:
May 2, 1911
Creator:
Riley, Samuel L.
System:
The Portal to Texas History