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Resilient Wheel
Patent for an improved automobile spring wheel that has an auxiliary tread and is separate from the spokes, so that it adds cushioning to the spokes.
Date:
March 23, 1916
Creator:
Luttrell, William J.
System:
The Portal to Texas History
Detachable Drill-Bit.
Patent for a detachable drill bit for use in drilling deep wells via the rotary method, where the bit can be replaced with the drill stem still in the bore.
Date:
March 23, 1916
Creator:
Carden, David A.
System:
The Portal to Texas History