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Ring-Mandrel
Patent for "new and useful improvements in ring mandrels, for use in shaping up and rounding and dressing bands of different diameters &c., &c." lines 15-18
Date:
April 30, 1918
Creator:
Hinson, James
System:
The Portal to Texas History
Reversible Chuck-Jaw.
Patent for a reversible chuck-jaw that is " 'capable of wide adjustment, this flexibility of operation facilitating the application of the chuck jaw to various types of chucks." (lines 49-52)
Date:
April 2, 1918
Creator:
Miller, William J.
System:
The Portal to Texas History