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Nut-Lock.
Patent for new and improved Nut-Locks, allowing for "a simple, strong, durable, and efficient arrangement for effectually locking a nut on a bolt..." (lines 16-18), including instructions and illustrations.
Date:
April 29, 1916
Creator:
Portesi, Santos & Taini, John
System:
The Portal to Texas History
Folding Bunk Stairs
Patent for stair-step that can be folded up, to be used in bunk bed situations such as in sleeping cars of trains.
Date:
December 26, 1916
Creator:
Mey, Ella E.
System:
The Portal to Texas History