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Spiral Ring.
Patent for a new and improved lap-ring. This design consists in a "lap-ring for connecting the tree-irons of double-trees and single-trees, consisting of the S-shaped lap-ring having the end curves spread laterally from the stem of the S, and carried round on spiral curves to points ninety degrees beyond a line that would evenly divide the figure thus formed longitudinally" (lines 41-48).
Date:
July 8, 1884
Creator:
Brooks, George W.
System:
The Portal to Texas History
Folding Box
Patent for paper box formed from a single blank which can be folded into compact form.
Date:
May 8, 1906
Creator:
Hale, Lawrence F.
System:
The Portal to Texas History