Nut Lock.
Description:
Patent for a new and improved nut lock. This design consists in "[a] lock . . . for a nut having a non-circular recess in its rear face, consisting of a washer having a non-circular opening whereby it may be keyed upon a bolt and fitted to enter the non-circular recess of a nut, and a securing-plate having an opening fitted to receive the locking-washer" (lines 81-87).
Date:
June 15, 1886
Creator:
Unger, Louis
Partner:
UNT Libraries Government Documents Department