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Lock.
Patent for an invention that relates to locks. "The prime object of the invention is to provide a supplemental locking device for the holding element, which is entirely separate from the usual locking mechanism, so that should one unacquainted with the lock attempt to open it in the ordinary manner by operating said usual mechanism the holding element will still be securely locked and the attempt would thus be frustrated." (Lines 14-21) Illustration is included.
Date:
November 26, 1901
Creator:
Rodrigo, Hendrick
System:
The Portal to Texas History
Horizontal-Drilling Machine
Patent for a horizontally boring drill for use in trench warfare, including illustrations.
Date:
November 26, 1918
Creator:
Hughes, Howard R.
System:
The Portal to Texas History