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Nut-Lock.
Patent for a simple, inexpensive, and efficient improved nut-lock that "securely lock[s] a nut against accidental rotation, and adapted to be readily applied to single nuts having either right or left hand threads" (lines 12-15). The invention also is easily screwed and unscrewed without being damaged.
Date:
June 18, 1895
Creator:
Comminge, Frank
System:
The Portal to Texas History